• 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:
    The present application discloses the use of the pre-stressed steel strand in the procedure of multi-angle core drilling. Using the properties of high strength and toughness of pre-stressed steel strand material, the core internal pipe is pushed inside the drill rod without deformation and damage. The rolling wheel is designed to rapidly take out and put back the pre-stressed steel strand to finish the extracting of the core, without taking out and putting back the drill rod. Without altering the original structure of the drilling machine, the technology of 360° core drilling is realized. Problems of tedious and arduous operations and a low efficiency in multi-angle drilling are resolved completely. The use of the pre-stressed steel strand not only can significantly improve the drilling-in efficiency, but also is beneficial to guarantee the quality of the rock mineral coring, reduce the cost of drilling, lower the labor intensity notably, and increase the profit of drilling.
    公开号:SE1750619A1
    申请号:SE1750619
    申请日:2016-05-24
    公开日:2017-08-03
    发明作者:Bai Ruifeng
    申请人:Chifeng Hao Feng Drilling Co Ltd；
    IPC主号:
    专利说明:

    [1] [0001] The present application relates to the field of drilling, in particular, to apre-stressed steel strand used in 360° rapid coring in drilling, such that the properties ofhigh strength and high toughness of the pre-stressed steel strand are used to deal with theproblem that the double-pipe coring and the wire-line coring in the current multi-angle drilling industry have a low operation efficiency.
    [2] [0002] Nowadays, for the drilling equipment at home and abroad, the most ideal,the most popular, and matured coring method is the wire-line coring, i.e., using the steelwire rope. In 1947, the American Boart Longyear Company invented the technology ofwire-line core drilling, which became a series of products till l950s. ln 1972, Ministry ofGeology and Mineral Resources of P. R. China started researching the technology ofwire-line core drilling. In the early l980s, this technology was widespread and useddomestically. Up to now, the drilling range of the wire-line coring is always used in avertically downward angle. Since the internal pipe of the core needs to rely on its gravityto droop to the bottom of the hole, the lirnitation of the drilling angle cannot be exceeded.Meanwhile, the horizontal drilling and the downhole drilling have shallow hole locationsand many angles. For example, for the downhole drilling, the space is narrow, and theroadway of 2x2 meters is mostly used. The wire-line coring and the tower supporting thewire-line cannot be used. Even if the technology of wire-line coring is applied, the spaceof the downhole needs to be enlarged, which costs time, labor, and money. Therefore,this process is generally not used.
    [3] [0003] A double-pipe coring process is used in another core drilling method .
    [4] [0004] The pre-stressed steel strand was the construction material invented by aF renchman, Enugene Freyssinet, in 1928. China started producing this material in thel960s. The pre-stressed steel strand is broadly used in construction, railroad, highway,hydraulic engineering, energy, and rock anchoring construction. The pre-stressed steelstrand can stand bending without cracking, expanding, and flaking off. lt has nice impactproperty, good toughness, and can be Wound circularly, and occupies a small area. Whenthe pre-stressed steel strand is used in the technology of core drilling, cumbersome wire-line tower and hi gh-duty pump are not required. Moreover, the downhole space does notneed to be enlarged to increase the working efficiency. Therefore, it is more convenient and efficient in terms of transportation and on-site usage.
    [5] [0005] The purpose of the present application is to provide the use of the pre-stressed steel strand in the procedure of multi-angle core drilling.
    [6] [0006] Technical solutions of the present application are as below:
    [7] [0007] Use of the pre-stressed steel strand in the procedure of multi-angle coredrilling.
    [8] [0008] Technical problems solved by the present application are that, using the properties of high strength and toughness of pre-stressed steel strand material, the coreinternal pipe is pushed inside the drill rod without deformation and damage (if being horizontally pushed, the ordinary steel strand or steel Wire rope will bend, and the rigidity is insufficient). The rolling wheel is designed to rapidly take out and put back the pre- stressed steel strand to finish the extracting of the core, Without taking out and puttingback the drill rod. Without altering the original structure of the drilling machine, thetechnology of 360° core drilling is realized. Problems of tedious and arduous operationsand low efficiency in multi-angle drilling are resolved completely. Moreover, thestructure inside the hole can be maintained. The sampling ratio of rock mineral coremeets the national standard.
    [9] [0009] Advantages of the present application are as follows. 1. The rigidity of thepre-stressed steel strand is high. The pre-stressed steel strand can push the core pipedirectly. The drill rod does not need to be taken out and put back to extract the core everytime. Compared With the prior art, the auxiliary time of taking out and putting back thedrill rod is reduced, the pure drilling-in time is increased. The deeper the drilling goes,the more significant the economic effects are. 2. The labor intensity of the Worker islowered. 3. The core jam can be cleared out immediately, such that the sampling ratio ofthe rock mineral core is improved. 4. The Wear caused by fastening and loosening thedrill rod is reduced, such that the lifetime of the drill rod is extended, and the consumingof the pipe is slowed down. 5. The wear caused by the drill hole Cleaning, fastening andloosening, and collision with the Wall of the hole is reduced, such that the lifetime of thedrill is extended. 6. The problems caused by cleaning and sucking, and the unbalancedpressure on the wall of the hole are reduced, such that accidents inside the hole arereduced. 7. The mechanical Wear caused by taking out and putting back the drill isreduced, such that the lifetime of the drilling machine is extended. 8. The curvature of thedrilling hole is reduced, such that the quality of the drilling hole is improved. 9. Drillinginto complex stratum is facilitated, and the wall of the hole is prevented from collapsingor dropping blocks. l0. The clinometer can be provided in the drill rod by means of pre-stressed steel strand, to measure the inclination. ll. Energy is saved. Only a small amountof power is needed to perform the operation of coring, without the running assistance ofthe drilling machine.
    [10] [0010] Generally, the pre-stressed steel strand coring realizes the multi-angle drilling, and can significantly improve the efficiency of the drilling-in, guarantee the quality of the rock mineral coring, reduce the cost of drilling, lower the labor intensity notably, increase the income of drilling Worker, and promote the economic profit.
    [11] [0011] Figure l is the structural schematic diagram where the present applicationis applied in the drilling equipment;
    [12] [0012] Figure 2 is the structural schematic diagram Where the present applicationis applied in the drilling equipment (the drilling machine added).
    [13] [0013] Hereinafter, the usage of the present application is further described indetail.
    [14] [0014] ln Figures l-2:
    [15] [0015] l. drill rod; 2. core internal pipe; 3. pre-stressed steel strand; 4. rollingwheel; 5. winder; 6. power head.
    [16] [0016] Embodiments:
    [17] [0017] Operation and Equipment Conditions
    [18] [0018] Regarding the downhole horizontal drilling task, the working space has a height of 2 meters and a width of 2 meters. The power head type tunnel drilling machineis used. The oil cylinder stroke is 0.75 meters. The hole depth is 300 meters. The double-pipe coring process meets the standard of the Ministry of Metallurgieal Industry. The drill rod is 1.5 meters. The core internal pipe is 1.5 meters.
    [19] [0019] The operating method of the double-pipe coring process in the priorart:[0020] l. On the above drilling field, the drilling machine is set up with supports. After the safety checking is finished, the machine starts to run. The coreinternal pipe is installed to open a hole and drill into the hole.
    [21] [0021] 2. After the core internal pipe is full by drilling, (In the first roundtrip of drilling, the drilling machine clarnps the core internal pipe) the effective trip of the drilling machine is used to go forward and backward twice to pull out the core internal pipe. The drill bit and the rearner are demounted. The core is retrieved. Next, the drill bitand the reamer are mounted again. The core internal pipe is pushed forward andbackward twice with the drilling machine oil cylinder, so as to be fed into the hole. Thedrill rod is linked to go on drilling.
    [22] [0022] 3. In the second round trip, the core internal pipe is fully filled. Thedrilling machine oil cylinder is used to go forward and backward four times to pull outthe drill rod and the core internal pipe. The drill bit and the rearner are demounted. Thecore is retrieved. Next, the drill bit and the reamer are mounted again. The core internalpipe is pushed forward and backward four times to be fed into the hole. The second drillrod is linked to go on drilling.
    [23] [0023] 4. In the third round trip, the core internal pipe is fully filled. Thedrilling machine oil cylinder is used to go forward and backward six times to pull out thedrill rod and the core internal pipe. The drill bit and the reamer are demounted. The coreis retrieved. Next, the drill bit and the reamer are mounted again. The core internal pipe ispushed forward and backward six times to be fed into the hole. The third drill rod islinked to go on drilling.
    [24] [0024] 5. The drilling steps are performed as above, and so on. Every timethe core is retrieved, all the drill rods need to be taken out. If 200 drill rods are to be takenout, 800 times of operation of taking-out, 400 times of mounting and demounting of thedrill rods are required. Each round trip can be finished within about l 10 minutes.
    [25] [0025] Operation method of pre-stressed steel strand coring process of thepresent application:
    [26] [0026] 1. Under equal conditions, the pre-stressed steel strand coring processis used. On the field, the drilling machine is set up with supports. After the safetychecking is finished, the machine starts to run. Core internal pipe 2 is installed to open ahole and drill into the hole. (Two core internal pipes are prepared on site.)
    [27] [0027] 2. After the core internal pipe 2 is full by drilling, the pre-stressedsteel strand coring overshot is conveyed by rolling wheel 4, and enters the drill rod to fishcore internal pipe 2. Core internal pipe 2 is rapidly pulled out and put down. Next, an empty core internal pipe is taken. The core internal pipe is pushed rapidly by the pre- stressed steel strand pusher driven by the rolling wheel. The core internal pipe is clamped . Pre-stressed steel strand 3 is pulled out. Drill rod 1 is linked to go on drilling.[0028] 3. When the drilling machine is drilling, the core is retrieved, whichincreases the drilling-in time.
    [29] [0029] 4. ln the second round trip, when the core internal pipe is full, thedrill rod does not need to be taken out. The pre-stressed steel strand coring overshot isconveyed by rolling wheel 4, and enters the drill rod to fish the core internal pipe. Thecore internal pipe is rapidly pulled out and put down. Next, an empty core internal pipe istaken. The core internal pipe is pushed rapidly by the pre-stressed steel strand pusherdriven by the rolling wheel. The core internal pipe is clamped. The pre-stressed steelstrand is pulled out. The drill rod is linked to go on drilling.
    [30] [0030] 5. When the drilling machine is drilling, the core is retrieved.
    [31] [0031] 6. ln the third round trip, when the core internal pipe is full, the drillrod does not need to be taken out. The pre-stressed steel strand coring overshot isconveyed by the rolling wheel, and enters the drill rod to fish the core internal pipe. Thecore internal pipe is rapidly pulled out and put down. Next, an empty core internal pipe istaken. The core internal pipe is pushed rapidly by the pre-stressed steel strand pusherdriven by the rolling wheel. The core internal pipe is clamped. Pre-stressed steel strand ispulled out. The drill rod is linked to go on drilling.
    [32] [0032] 7. When the drilling machine is drilling, the core is retrieved.
    [33] [0033] 8. The above steps are repeated, such that the core can be extractedwithout taking out the drill rods.
    [34] [0034] With the pre-stressed steel strand coiing process, under equal conditions, itis not necessary to take out 200 drill rods. The pre-stressed steel strand can take out andput back the core internal pipe Within about 20 minutes to finish one round trip. Theefficiency of the pre-stressed steel strand coring process is 5.5 times as that of the double-pipe coring process.
    [35] [0035] lf a drilling task of 300 meters tunnel horizontal hole is to be completed,under equal conditions, the double-pipe coring method in the prior art requires theoperator to conduct 80400 times of pulling and pushing operation, and 40200 times of mounting and dernounting of the drill rods, loosening and fastening the drill rods and the drill thread actions, so as to retrieve the core. lf the pre-stressed steel strand coring of thepresent application is used, under equal conditions, the drill rods do not need to be takenout. Merely 400 times of pulling and pushing of the core internal pipe are needed toretrieve the core (during which all the drill rods need to be taken out if the drill bit isreplaced, and 1200 times of operations are counted for replacing three drill bits). Only1600 times of pulling and pushing actions in total are needed to complete the task. Thelabor intensity of the operator is lowered, and 50 times of labor work can be saved.[0036] ln 2015, the present application is applied in the multi-angle drilling onsite for a long time. For a dozen hours of experiment every day, it is proved that the pre-stressed steel strand coring does not cause any abnormal condition, sticking of the drill,drilling Without reaching the bottom of the hole, and broken pre-stressed steel strandsituation. The pre-stressed steel strand coring shows good stability, and can meet therequirements on site to reach the ideal status of the pre-stressed steel strand coring.Without altering the original structure of the drilling machine, a small amount of investment is required to realize the multi-angle drilling.
    权利要求:
    Claims (1)
    [1] 1. Claims A method for pushing and pulling core internal pipe during multi-angle coredrilling using pre-stressed steel strand, comprising: A setting up a drilling machine With support on a drilling field; conducting asafety check; running the drilling machine; installing the core internal pipe;opening a hole and drilling; B after the core internal pipe is full by drilling, conveying a pre-stressed steelstrand coring overshot by a rolling Wheel; Wherein the pre-stressed steel strandcoring overshot enters a front part of a drill rod to obtain the core internal pipe;rapidly pulling out the core internal pipe; and putting down the core internal pipe;C putting another empty core internal pipe in the drill rod; pushing the emptycore internal pipe by the pre-stressed steel strand Which is driven by the rollingWheel, such that the empty core internal pipe is rapidly pushed into the front endof the drill rod; clamping the core internal pipe; pulling out the pre-stressed steelstrand; Winding the pre-stressed steel strand on a Winder; linking the drill rod;running a power head; keeping drilling; D When the drilling machine is drilling, retrieving a core; E repeating the steps B, C, and D, till a predeterrnined drilling depth is reached.
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    引用文献:
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CN201610067805.7A|CN105649563B|2016-01-29|2016-01-29|Application of the steel strand wires during multi-angle boring coring|
    PCT/CN2016/083085|WO2017128572A1|2016-01-29|2016-05-24|Use of prestressed steel strand in multi-angle drilling and coring process|
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