• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A system (864; 900) and a method are described, such as for collecting borehole logging induction data (401, 712) with an induction logging tool (100). It can then be determined whether the wellbore log induction data (401, 712) is within the operating limits of the logging tool (100). The operating limits may be defined by a maximum diameter of the borehole (401, 712) at a predetermined sludge resistivity (734). A borehole diameter threshold (401, 712) is determined to be within the operating limits of the logging tool. When the diameter of the borehole (401, 712) is greater than the borehole diameter threshold (401, 712), the borehole log induction data (401, 712) are corrected on the basis of executing an overall induction work scheduler using the drill hole diameter threshold (401, 712) at the predetermined slurry resistivity (734).
    公开号:FR3035145A1
    申请号:FR1651791
    申请日:2016-03-03
    公开日:2016-10-21
    发明作者:Ameet B Agnihotri；Junsheng Hou
    申请人:Halliburton Energy Services Inc；
    IPC主号:
    专利说明:

    [0001] DATA PROCESSING FOR ENHANCED INDUCTION TOOL LOG DATA CORRECTION IN DIFFICULT DIAGRAM CONDITIONS BACKGROUND [0001] Various techniques can be used to evaluate geological formations. For example, laterologic tools can use current and control electrodes to provide a resistivity log for a variety of relatively more superficial or relatively deeper radial depths of examination. The targeting of a current injected into the laterolog tool can be established using hardware or software techniques, or a combination of hardware and software techniques. The laterologic device will work well in very saline borehole fluids with high formation resistivity whereas the same environment may be problematic for induction devices. [0002] Certain measurement scenarios can always be problematic for overall induction tool measurements. For example, difficult well logging conditions can produce inaccurate logging results due to higher contributions from the borehole signal. These difficult logging conditions may include the presence of very salty sludge (or low resistivity sludge), a relatively large borehole diameter, and / or relatively high formation resistivity. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of an exemplary overall induction tool apparatus according to aspects of the present disclosure.
    [0002] FIG. 2 is a diagram of an overall induction work scheduler according to aspects of the present disclosure. FIGURE 3 is a flowchart of a measurement data processing method of an overall induction tool apparatus, according to aspects of the present disclosure. FIG. 4 is a simulation diagram of an overall induction tool logging operation in a vertical borehole, according to aspects of the present disclosure. [0007] FIGURE 5 is a plurality of overall induction tool log graphs at different frequencies, according to aspects of the present disclosure. FIGURE 6 is a plurality of overall induction tool log graphs resulting from various corrections, according to aspects of the present disclosure. FIG. 7 is a diagram illustrating a drilling system, according to aspects of the present disclosure. FIGURE 8 is a diagram illustrating a cable system, according to aspects of the present disclosure. FIGURE 9 is a block diagram of an exemplary system usable for implementing the activities of any methods of the present disclosure, in accordance with aspects of the present disclosure. DETAILED DESCRIPTION [0012] Some of the above-mentioned and other challenges can be addressed by implementing the apparatus, systems, and methods described herein. In many examples, apparatus and techniques are described for obtaining and correcting geological formation log data indicative of formation resistivity using a set induction tool. Wrong log data that was obtained from part or all of the borehole outside the operating limits of an overall induction logging tool can be corrected. FIGURE 1 is a schematic diagram of an exemplary assembly induction logging tool 100 in accordance with aspects of the present disclosure. The overall induction logging tool apparatus 100 of FIGURE 1 may be referred to as an Ensemble Compensated Resistivity Sensor Tool (ACRT) and is provided for illustrative purposes only. set induction tool. Other examples may use different lateral logging tools. The set induction tool 100 may include a transceiver 110 and a plurality of receiver subsystems 101-106. Each receiver subsystem 101-106 may include a pair of receivers 111, 112 which may be designated as a main receiver 111 and a cutoff receiver 112. The set induction tool 100 may operate on a plurality of frequencies (eg, 12 kHz, 36 kHz, 72 kHz) to enable multiple frequency acquisition, quality control, noise control and multi-frequency data processing. The transceiver 110 may transmit a signal at one of the plurality of frequencies into a geological formation. The plurality of receivers 101-106 can then receive a voltage signal that has been induced in the receiver coils. The induced voltage signals being indicative of the properties of the formation. The overall induction tool apparatus 100 may further include a circuit as illustrated in FIGURE 9 to control the operation of the apparatus such as performing a logging operation. The circuit may be separated from the transceiver portion and the tool receiver and configured to accept data indicative of the received signals and to perform data processing methods for correcting inaccurate log data. [0015] Overall induction class logging tools, as illustrated in FIGURE 1, provide a record of the resistivity of the formation. It can be seen that various drill hole conditions (eg, difficult logging conditions) can adversely affect the logging operation and produce corrupt logging data. For example, the difficult logging conditions may include the presence of very salty sludge (eg, low resistivity sludge), a relatively large borehole diameter, and / or relatively high formation resistivity. FIGURE 2 is a diagram of an overall induction work scheduler, according to aspects of the present disclosure. The illustrated scheduler can be used to determine whether the logging results are affected by difficult borehole conditions, thereby producing inaccurate logging results. The job scheduler and the data entered in the input section 201 are for illustrative purposes only since other methods and other data may be used to determine whether the logging results are incorrect. . The overall induction work scheduler displays a vertical scale of the actual resistivity (Ri) of the formation at a distance from the borehole at which there is no invasive effect and a horizontal scale of the resistivity. of xx divided by the resistivity of sludge (Ri n). The assembly induction scheduler includes an input section 201 and an output section 202. The data inputted to the input section 201 affects the movement of an operating line 220. Operation line 220 in the various zones 210-212 of the graph determines the type of induction tool (eg, ACRT) to be used based on the entered data 201. The job scheduler further includes lines of data. 230-232 vertical resolution contour (eg, 1 foot (30, 48 cm), 2 feet (60, 96 cm), 4 feet (121, 92 cm)) that provide guidance on areas 210-212 of 15 graphics designated for each type of overall induction tool. As an example of the work planner's operation, a surface temperature of 90 ° F (32, 22 ° C) was entered with a sludge resistivity (Rn,) of 0.200 Ohm / m at this temperature. . The bottom hole temperature was entered at 175 ° F (79.44 ° C) and the borehole size was entered at 6.5 inches. The operating line 220 resulting from this particular data entry is shown to the left of the maximum vertical resolution line 232. Thus, the type of ACRT induction tool must produce accurate log data. The data entered in the input section 201 is only intended to provide an example of an operating line 220 and does not limit the subject of the present invention. If, in another example, the logging data obtained were recorded in the graph of FIGURE 2 and were plotted to the right of the operating line 220, these data would be considered as inaccurate data. Thus, as used herein, inaccurate data may be defined as those data that are outside the operating region of the selected induction tool. FIGURE 3 is a flowchart of a method for measuring data processing of the overall induction tool apparatus, according to aspects of the present disclosure. The method involves use and refers to the overall induction work scheduler of FIGURE 2. However, any other method for determining that the logging data is outside the capabilities of the tool The particular log that made the measurements (ie, inaccurate log data) can be used. In block 300, bore hole log induction data is collected using the set induction tool 100. In block 301, the induction data, the resistivity of Sludge (R '), and borehole diameter (BD) (i.e., compass data) are entered into the induction work planner. As previously described, this generates an operating limit (i.e., an operating line) for the type of induction tool selected based on the predetermined R 'and the measured borehole diameter. In block 303, a skin effect correction is performed on the recorded induction data to suppress any frequency effect of the logging induction data and thereby improve the linearity. The skin effect can be defined as the loss of amplitude and the phase change of an electromagnetic field as it penetrates a conductive support. Thus, in an induction log, the skin effect results in a reduction of an R signal (in phase) and an increase of an X signal (out of phase) at the receiver. Since the magnitude of the reduction depends on the conductivity, the skin effect can be corrected using a fixed function of the measured conductivity. The correction can be estimated from the signal X measured in balanced sets. In block 305, the recorded induction data is evaluated to determine whether the recorded borehole induction data is within the operating limits of the logging tool (e.g. assembly induction tool 100). This can be accomplished by determining the location of the recorded induction data relative to the operating line of the overall induction work scheduler. This step determines whether the recorded induction data is correct or incorrect by comparing the recorded induction data with a resulting operating line of step 301 to determine whether inaccurate logged induction data has been obtained. In one example, the recorded induction data can be plotted on the induction work scheduler graph to determine if the data is out of the operating range of the induction tool. In block 307, the maximum borehole diameter (BDmax) (e.g., the borehole diameter threshold) is determined for a given sludge resistivity (Rm). This can be determined from the overall induction work scheduler by increasing the borehole diameter input data (with unchanged sludge resistivity and downhole temperature) until the line 220 runs to line 232 10 representing the maximum vertical resolution (see FIGURE 2). The borehole diameter that produces this alignment of the line of operations 220 and the maximum vertical resolution line 232 (e.g., the vertical resolution threshold) is the largest borehole diameter that can be used for logging and still obtain accurate log induction data at that particular R ,, 'and downhole temperature. The drill hole diameter threshold is thus a parameter, at the particular Rm, which defines the operating limits of the overall induction tool 100.
    [0003] In block 309, the recorded induction data is corrected for the borehole effect. The borehole correction effect removes the contribution of the borehole to the recorded induction data. The borehole effect can be defined as the amount at which a log measure is adjusted to remove the contribution of the borehole to the recorded induction data. For example, raw coil signals are sent via the skin effect correction and then the borehole correction.
    [0004] Under ideal conditions, the induction coils read the signal from their present position to infinity. Thus, a coil that is designed to measure data at 80 inches from the coil and a coil that is designed to read at 6 inches from the coil both reads information from their respective positions to infinity (in moving radially from the borehole). The first element in the path of the transmitted signal is the borehole in which the conductive sludge is located. From there, a borehole correction is used to correct (ie, suppress) the contribution of the signal sludge for all the various coils. This correction can be made by software or manual entry in correction graphs. In the resistivity log, the correction replaces the borehole with a resistivity equal to that of the formation. In block 311, it is determined whether the actual borehole diameter, used to generate the current recorded induction data, is greater than the maximum allowable borehole diameter (BDmax) for an R '. particular and a downhole temperature, as determined from above. If the actual measured borehole diameter (BD) is less than or equal to 10 BDmax, then the recorded induction data is probably correct and the normal processing proceeds to step 315. If the hole diameter of Measured drilling BD is greater than BDmax, the induction tool has collected the induction data logged out of its operating limits and the recorded induction data is considered incorrect. In this case, the recorded induction data is corrected in block 313 using a known Rrn and the diameter BDmax (i.e., the borehole diameter threshold). The recorded induction data is corrected to determine the skin effect correction with respect to the original data. In one example, the skin effect correction refers to the 50 and 80 inch (respectively 127 cm and 203, 20 cm) coil values over the original data. The corrected data is reinjected using the drill hole diameter threshold. If the recorded induction data was considered correct or the inaccurate recorded induction data was reprocessed as described above, block 315 performs software targeting and radial dimension inversion (RID) of recorded induction data. The software targeting refers to the combination of subset measurements in customer deliverable curves. For example, a plurality of vertical resolution sets (e.g., 1 foot (30, 48 cm), 2 feet (60, 96 cm), 4 feet 30 (121, 92 cm)) (see FIGURE 2) in each set includes a plurality of penetration depths (e.g., 10, 20, 30, 60, 90 inches) (respectively 25, 4 cm, 50, 8 cm, 76, 20 cm, 152, 40 cm and 228 , 60 cm). This produces an improved recorded vertical resolution. The software targeting performs 3035145 vertically which has been done radially by the bore hole correction. Block 317 then determines whether all the log points have been processed. If this is not the case, the treatment is repeated from block 301 as previously described. If all the log points have been processed, the processed logs are then output for user analysis or other software processing in block 319. FIGURE 4 is a simulation diagram of an operation method of inductive induction tool logging in a vertical borehole, according to aspects of the present disclosure. For illustrative purposes only, this simulation provides an example of an induction data logging operation and results in the execution of the method of Figure 3 on the recorded induction data. [0033] The simulation implies that the vertical borehole 401 of FIGURE 4 has a sludge resistivity (Rm) of 0.02 Ohm / m, an 8-inch borehole diameter (20.32 cm) , and a tool eccentricity of zero. An induction logging tool 100 such as, for example, the tool of FIGURE 1, is positioned in the borehole for the logging operation. Various formation layers (Layer 1 - Layer 21) are illustrated at different distances z from a supposed reference point 0 in the borehole. FIGURE 5 is a plurality of overall induction tool log graphs at different frequencies, according to aspects of the present disclosure. These ensemble induction tool logs are derived from the simulation configuration illustrated in FIG. 4. It is assumed for the purposes of this simulation that six sets of three different frequency receivers were used in tool 100 and that the actual formation conductivity is represented by Ct. The various graphs have milliseconds per meter (mS / m) along the horizontal axis and a measurement depth (MD) in feet (ft) along the axis vertical. The first graph 501 illustrates the data recorded at the first 12 kHz frequency. The second graph 502 illustrates the data recorded at the second frequency of 36 kHz. The third graph 503 illustrates the data recorded at the third frequency of 72 kHz. These graphs illustrate the raw measurement data at each of these frequencies (i.e., 12 kHz, 36 kHz, and 72 kHz) and at the depths shown in the borehole. FIGURE 6 is a plurality of overall induction tool log graphs from various corrections, according to aspects of the present disclosure. The first graph 601 illustrates the results of the skin effect correction on the recorded data. The second plot 602 illustrates the results of the borehole correction on the logged data. The third plot 693 illustrates the final results of the method without evidence of any false invasion pattern. FIGURE 7 is a diagram illustrating a drilling system 764, according to various examples of the description. The system 764 includes a drilling rig 702 located at the surface 704 of a well 706. The drilling rig 702 can support a drill stem 708. The drill stem 708 can operate to penetrate the rotary table 710 for drilling the borehole 712 through the subsurface formations 714. The drill pipe 708 may include a drill pipe 718 and a downhole assembly (BHA) 720 (eg, a drill pipe), possibly located at the lower portion of the drill pipe 718. The BHA 720 may include drill collars 722, a bottom hole tool 724 including the set induction tool 100, and a bit. The drill bit 726 is operable to create the borehole 712 by penetrating the surface 704 and subsurface formations 714. The downhole tool 724 can include any number of tool types. different in addition to the overall induction tool 100. The tool The assembly induction tool 100 used during MWD / LWD operations may provide data at the surface (e.g. , wired, telemetry). During drilling operations in the borehole 712, the drill stem 708 (probably including the drill pipe 718 and the BHA 720) can be rotated by the rotary table 710. Although not shown, in addition or alternatively, the BHA 720 can also be rotated by a motor (eg, a sludge motor) which is located in the downhole. The drill collars 722 may be used to add weight to the drill bit 726. Drill collars 722 may also operate to strengthen the downhole assembly 720, allowing the downhole assembly 720 to transfer the added weight to the drill rod 726, and in turn, to assist the drill rod 726 in the penetration of the surface 704 and sub-surface formations 714. During drilling operations in the cased borehole 712, a sludge pump 732 can pump the drilling fluid (sometimes known to those skilled in the art as "drilling muds") from a sludge well 734 through a hose 736 into the slurry tube. drilling 718 and down into the drill bit 726. The drilling fluid can escape from the drill bit 726 and be returned to the surface 704 via an annular zone 740 between the drill pipe 718 and the sides of the drill bit 726. drill hole 712. Drilling fluid can then be returned to the sludge well 734, in which this fluid is filtered. In some examples, the drilling fluid may be used to cool drill bit 726, as well as to provide lubrication of drill bit 726 during drilling operations. In addition, the drilling fluid can be used to remove sub-surface formation cuts created by the use of the drill bit 726. A workstation 792 including a controller 796 can include modules comprising a hardware circuit, a processor, and / or memory circuits that can store modules and software program objects, and / or firmware, and combinations thereof that are configured to perform the method of FIGURE 3 The controller 796 may be configured to control the operation of the set induction tool 100 in the data collection, the execution of the skin effect correction and the drill hole correction of the data. induction, software targeting and RID inversion, as well as determining whether the logged data is incorrect (i.e., inaccurate) and should be corrected according to the method of FIGURE 3. [0042] Thus, in div In other examples, components of a usable system may be applied in combinations of hardware and / or software running on a processor. These implementations may include a machine-readable storage device having executable instructions on a machine, such as a computer-readable storage device having executable instructions on a computer. In addition, a storage device 3035145 11 readable on a computer may be a physical apparatus which stores data represented by a physical structure in the apparatus. Such a physical device is a non-transient device. Examples of machine-readable storage devices may include, but are not limited to, read only memory (ROM), random access memory (RAM), a magnetic disk storage device, a storage device optical, flash memory, and other electronic, magnetic, and / or optical memory devices.
    [0005] FIGURE 8 is a diagram illustrating a cable system 864, according to various examples of the description. The system 864 may comprise a cable logging tool body 820, as part of a wire logging operation in a cased and cemented borehole 712, which includes the assembly induction tool 100 as shown in FIG. as previously described.
    [0006] 100441 A drilling rig 786 equipped with a derrick 788 that supports a hoist 890 can be observed. The drilling of oil and gas wells is generally carried out using a string of drill pipes connected together to form a drill pipe which is lowered through a rotary table 710 into the borehole 712. It is here assumed that the drill rod has been temporarily removed from the borehole 712 to allow the body of the wire logging tool 820, such as a probe with the set induction tool 100, to be lowered by cable or by a logging cable 874 (eg, a smooth cable) into the borehole 712. Typically, the body of the cable logging tool 820 with the overall induction tool 100 is lowered to the bottom of the region of interest and then pulled up at a substantially constant rate.
    [0007] During upward movement, at a range of depths, various instruments may be used to perform geological formation measurements. The cable data may be communicated to a surface logging facility (eg, a workstation 792) for processing, analysis, and / or storage. The logging facility 792 may be provided with electronic equipment for various types of signal processing as previously described. The work station 792 may have a controller 796 that is coupled to the cable induction set tool 874 or telemetry to receive data from the logging tool relating to geological formation properties. FIG. 9 is a block diagram of an exemplary system 900 operable to implement the activities of any method of the present disclosure, in accordance with aspects of the present disclosure. The system 900 may include a tool housing 906 enclosing the assembly induction tool 100, such as that illustrated in FIG. 1. The system 900 may be configured to operate in accordance with the teachings herein to perform measurements. geological formation (ie, a logging operation) to determine the properties of the geological formation. The system 900 of FIGURE 9 may be implemented as illustrated in FIGURES 7 and 8 with reference to work station 792 and controller 796. System 900 may include a controller 920, a memory 930, and a unit 935. The memory 930 may be structured to include a database. The controller 920, the memory 930, and the communications unit 935 may be organized to function as a processing unit to control the operation of the set induction tool 100 and to perform any method described herein. The communications unit 935 may include downhole communications for sensors suitably located in a wellbore. Such downhole communications may include a telemetry system. The communications unit 935 can use combinations of wired communication technologies and wireless technologies at frequencies that do not interfere with ongoing measurements. The system 900 may also include a bus 937, where the bus 937 provides electrical conductivity between the system 900 components. The bus 937 may include an address bus, a data bus, and a control bus. , each configured independently or in an integrated format. The bus 937 can be realized using a number of different communication media that allow the distribution of 900 system components. The bus 937 may include a network. The use of bus 937 may be controlled by controller 920. System 900 may include display unit (s) 960 as a distributed component on the surface of a wellbore, which can be used with instructions stored in the memory 930 to implement a user interface for monitoring the operation of the tool 906 or distributed components within the system 900. The user interface can be used to enter Parameter values for thresholds such as the 900 system can operate autonomously substantially without user intervention in a variety of applications. The user interface can also provide the manual replacement and control change of the 900 system to a user. Such a user interface can be used with the communications unit 935 and the bus 937. Many examples can thus be realized. Some of such examples will now be described.
    [0008] The accompanying drawings which form a part of this, show by way of illustration, and not limitation, specific embodiments in which the object can be applied. The illustrated embodiments are described in sufficient detail to enable those skilled in the art to apply the teachings described herein.
    [0009] Other embodiments may be used and derived therefrom so that structural and logical substitutions and modifications can be made without departing from the scope of this disclosure. This detailed description, therefore, should not be interpreted in a limited sense, and the scope of the various embodiments is defined solely by the appended claims, with the full range of equivalents to which such claims are intended. Embodiments 100521 Example 1 is a method comprising: determining whether the borehole log induction data collected with a logging tool is within the operating limits of the logging tool generated on the basis of a diameter of the borehole; determining a borehole diameter threshold within the operating limits of the logging tool; and when the diameter of the borehole is greater than the borehole diameter threshold, correcting the borehole log induction data based on the borehole diameter threshold.
    [0010] In Example 2, the object of Example 1 may further include wherein the correction of the borehole log induction data based on the borehole diameter threshold comprises the correction of 14 bore hole induction data based on the borehole diameter threshold at a predetermined sludge resistivity. In Example 3, the object of Examples 1-2 may further include determining whether the borehole logging induction data is within the operating limits of the tool of the present invention. logging generated on the basis of the diameter of the borehole comprising performing an induction assembly work scheduler. In Example 4, the subject of Examples 1-2 may further include executing the induction set work scheduler including generating an operating line as an indication of operating limits of the logging tool. In Example 5, the object of Examples 1-2 may further include generating the operating line comprising generating the operating line on the basis of predetermined sludge resistivity and temperature. 15 diameter of the borehole. In Example 6, the object of Examples 1-2 may further include determining the borehole diameter threshold comprising executing the assembly work planner with an increasing borehole diameter. until the operating line is aligned with a vertical resolution threshold. In Example 7, the subject of Examples 1-2 may further include correcting borehole log induction data based on a skin effect correction; and correcting the borehole log induction data based on a borehole correction. In Example 8, the subject of Examples 1-2 may further include performing software targeting on the corrected borehole induction data; and performing a radial inner diameter inversion of the corrected borehole induction data. [0060] Example 9 is a readable storage medium on a non-transient computer that stores instructions for executing one or more processors for logging operations, the operations including: determining whether the data of borehole logging induction are within the operating limits of a logging tool, the borehole logging induction data generated on the basis of a borehole diameter; determining a drill hole diameter threshold such that an operating line is within the operating limits; and when the diameter of the borehole is greater than the borehole diameter threshold, correcting the borehole log induction data on the basis of the borehole diameter threshold at a predetermined sludge resistivity. In Example 10, the object of Example 9 may further include wherein the operations further include executing an induction set work planner to determine whether the induction data Drill hole logs are within the operating limits of the logging tool. In Example 11, the object of Examples 9-10 can further include operations further generating the operating line by executing the induction set work scheduler on the basis of a vertical resolution limit of the logging tool. In Example 12, the object of Examples 9-11 can further include the operations of the induction set work scheduler by increasing the diameter of the borehole until the line of operation is substantially aligned with the vertical resolution limit. In Example 13, the object of Examples 9-12 may further include the operations further defining the operating limits of the apparatus based on the borehole diameter threshold at the resistivity of the apparatus. predetermined sludge and a predetermined surface temperature. [0065] Example 14 is a system comprising an inductive logging tool for installation in a borehole and for generating logging data indicative of geological formation properties; and a circuit coupled to the induction logging tool for accepting the logging data of the induction logging tool, determining whether the logging data is within the operating limits of the logging tool on the induction logging tool. the base of a borehole diameter, determine a drillhole diameter threshold indicative of the operating limits, and when the diameter of the borehole is greater than the borehole diameter threshold, the circuit is intended to correct the logging data based on the borehole diameter threshold at a predetermined sludge resistivity. In Example 15, the object of Example 14 may further include the system further comprising a drill pipe and the induction logging tool is installed in the drill pipe. In Example 16, the subject of Examples 14-15 may further include the system further comprising a cable tool and the induction logging tool is installed in the cable tool. In Example 17, the subject of Examples 14-16 may further include the induction logging tool being a laterologic class tool. In Example 18, the object of Examples 14-17 may further include the circuit being further adapted to: perform a skin effect correction of the logging data; perform hole hole correction logging data; and software targeting the logging data. In Example 19, the subject of Examples 14-18 may further include the circuit executing an overall induction work scheduler to determine the operating limits. In Example 20, the object of Examples 14-19 may further include the circuit executing the overall induction scheduler by increasing the diameter of the borehole to the predetermined sludge resistivity until 20. an operating line is substantially aligned with a vertical resolution limit of the induction logging tool. This description is intended to cover any and all adaptations or variations of the various embodiments. Combinations of the above embodiments, and other embodiments not specifically described herein, will be apparent to those skilled in the art from the discussion of the above description. In addition, in the present detailed description, it can be seen that various functionalities are grouped together in the same embodiment for the purpose of simplifying the description. This method of description should not be interpreted as reflecting an intention that the claimed embodiments require more functionality than those expressly indicated in each claim. Instead, as the following claims reflect, the object of the invention is based less than on all the features of a described embodiment. 17
    权利要求:
    Claims (20)
    [0001]
    CLAIMS: 1. A method of processing data of a logging tool (100) comprising: determining whether logging data of a borehole (401, 712) collected with a logging tool ( 100) are within the operating limits of the logging tool (100) generated on the basis of a diameter of the borehole (401, 712); determining a borehole diameter threshold (401, 712) within the operating limits of the logging tool (100); and when the diameter of the borehole (401, 712) is greater than the borehole diameter threshold (401, 712), the correction of the borehole logging induction data (401, 712) based on the borehole diameter threshold (401, 712).
    [0002]
    The method of claim 1, wherein correcting the borehole log induction data (401, 712) based on the borehole diameter threshold (401, 712) comprises correcting the data of drilling hole logging induction (401, 712) based on the borehole diameter threshold (401, 712) at a predetermined sludge resistivity (734).
    [0003]
    The method of claim 1, wherein determining whether the borehole logging induction data (401, 712) is within the operating limits of the logging tool (100) generated on the The diameter of the borehole (401, 712) includes performing an induction assembly work planner.
    [0004]
    The method of claim 3, wherein executing the induction assembly work scheduler includes generating an operating line (220) as an indication of the operating limits of the logging tool. (100). 18 3035145
    [0005]
    The method of claim 4, wherein generating the operating line (220) comprises generating the operating line (220) based on a predetermined sludge resistivity (734) and diameter. the borehole (401, 712).
    [0006]
    The method of claim 4, wherein the determination of the borehole diameter threshold (401, 712) comprises executing the assembly work planner with a growing borehole diameter (401, 712). until the operating line (220) is aligned with a vertical resolution threshold (230-232).
    [0007]
    The method of claim 1, further comprising: correcting the borehole log induction data (401, 712) based on a skin effect correction; and correcting the borehole log induction data (401, 712) based on a borehole correction.
    [0008]
    The method of claim 7, further comprising: performing software targeting on the corrected bore hole induction data (401, 712); and performing a radial inside diameter inversion of the corrected borehole induction data (401, 712). 25
    [0009]
    9. A non-transient computer-readable storage medium that stores instructions for execution by one or more processors for logging operations, the operations including: determining whether the borehole logging induction data (401, 712 ) are within the operating limits of the logging tool (100), the borehole logging induction data (401, 712) generated on the basis of a borehole diameter (401, 712); 19 3035145 5 10
    [0010]
    10. 15
    [0011]
    11. 20
    [0012]
    12. 25
    [0013]
    13. determining a borehole diameter threshold (401, 712) of the borehole (401, 712) such that an operating line (220) is within operating limits; and when the diameter of the borehole (401, 712) is greater than the borehole diameter threshold (401, 712), correcting the borehole logging induction data (401, 712) based on the drilling hole diameter threshold (401, 712) at a predetermined slurry resistivity (734). A non-transient computer-readable storage medium (930) according to claim 9, wherein the operations further include executing an induction assembly job scheduler to determine whether the hole logging induction data drilling (401, 712) are within the operating limits of the logging tool (100). A non-transient computer-readable storage medium (930) according to claim 10, wherein the operations further generate the operation line by executing the induction set work scheduler on the basis of a limit of vertical resolution (230-232) of the logging tool (100). A non-transient computer readable storage medium (930) according to claim 11, wherein the operations execute the induction set work scheduler by increasing the diameter of the borehole (401, 712) until the line of operations is substantially aligned with the vertical resolution limit (230-232). A non-transient computer readable storage medium (930) according to claim 9, wherein the operations further define the operating limits of the apparatus based on the borehole diameter threshold (401, 712) at the sludge resistivity (734) predetermined and at a predetermined surface temperature. 20 3035145
    [0014]
    A logging tool data processing system (864; 900) (100) comprising: an induction logging tool (100) for installation in a borehole (401,712) and for generating data from a logging tool (100); logging indicative of geological formation properties; and a circuit coupled to the induction logging tool (100) for accepting the logging data of the induction logging tool (100), determining whether the logging data is within the operating limits of the tool induction logging tool (100) based on a diameter of the borehole (401, 712), determining a borehole diameter threshold (401, 712) indicative of the operating limits, and when the diameter of the hole (401, 712) is greater than the borehole diameter threshold (401, 712), the circuit is adapted to correct the logging data based on the borehole diameter threshold (401, 712). ) at a predetermined sludge resistivity (734).
    [0015]
    The system (864; 900) of claim 14, wherein the system further comprises a drill rod (708) and the induction logging tool (100) is installed in the drill stem (708).
    [0016]
    The system (864; 900) of claim 14, wherein the system further comprises a cable tool (820) and the induction logging tool (100) is installed in the cable tool (820). 25
    [0017]
    The system (864; 900) of claim 14, wherein the induction logging tool (100) is a laterolog class tool.
    [0018]
    18. The system (864; 900) of claim 14, wherein the circuit is further adapted to: perform a skin effect correction of the logging data; perform hole hole correction logging data; and software targeting the logging data. 21 3035145
    [0019]
    The system (864; 900) of claim 14, wherein the circuit executes a set induction work scheduler to determine the operating limits. 5
    [0020]
    The system (864; 900) of claim 19, wherein the circuit executes the overall induction work scheduler by increasing the diameter of the borehole (401,712) to the predetermined slurry resistivity (734) to a line of operations (220) is substantially aligned with a vertical resolution limit (230-232) of the induction logging tool (100).
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    引用文献:
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    法律状态:
    2017-01-23| PLFP| Fee payment|Year of fee payment: 2 |
    2018-07-13| PLSC| Publication of the preliminary search report|Effective date: 20180713 |
    优先权:
    申请号 | 申请日 | 专利标题
    US201562148305P| true| 2015-04-16|2015-04-16|
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