CN1080015A - Down-hole right-angle steering horizontal drilling system - Google Patents
Down-hole right-angle steering horizontal drilling system Download PDFInfo
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- CN1080015A CN1080015A CN 92108173 CN92108173A CN1080015A CN 1080015 A CN1080015 A CN 1080015A CN 92108173 CN92108173 CN 92108173 CN 92108173 A CN92108173 A CN 92108173A CN 1080015 A CN1080015 A CN 1080015A
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- 230000003139 buffering effect Effects 0.000 description 1
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- 238000011161 development Methods 0.000 description 1
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Abstract
The invention relates to a drilling system, in particular to a downhole right-angle steering horizontal (radial) drilling system capable of performing right-angle steering in a downhole casing. The steering device mainly comprises a drill rod assembly, a steering gear assembly and a drill bit assembly. It can make right angle steering from the shaft of a straight well, drill into the stratum along the reservoir surface, and drill a plurality of horizontal radial wells with the length of 40-80 m in one well, and the well completion process of the horizontal well is simple. Compared with a horizontal well with a medium radius and a long radius, the vertical well adopting the system to carry out drilling treatment under the well can save drilling cost, obviously improve the oil gas recovery ratio, and improve the recovery ratio by more than 5 percent and the daily output of a single well by more than 5 times compared with the common vertical well.
Description
What the present invention relates to is a kind of down-hole horizontal drilling system, the particularly a kind of well right-angle steering level drilling system that can make right-angle steering in the down-hole.
In oil-gas exploration and development, in order to improve the individual well oil and gas production, to produce speed and recovery ratio, except well being implemented the acidizing fracturing process processing, effective method gets out horizontal well along the oil and gas reservoir face exactly, or subhorizontal high angle hole, to increase the contact area of well bore and reservoir, connect more crack, produce speed, output, reach recovery ratio and be greatly improved thereby make.At present, the prior art equipment that can get out net horizontal section has: major radius horizontal well drilling device systems; Medium radius horizontal well drilling equipment system comprises that down-hole slurry horsepower reaches system; ZUBLIN universal joint short radius horizontal drilling system (being called for short the ZUBLIN system) and super short radius well system (being called for short the URRS system).Wherein the equipment that adopted of major radius horizontal well drilling system is common drilling equipment, and just deflecting realizes turning to gradually by controlling repeatedly in drilling process, and its turning radius usually will be more than 500, and the net horizontal section that gets out is between 300-915m; Drilling equipment that medium radius horizontal well adopted and major radius drilling equipment that horizontal well adopts are basic identical, just part adopts the MTR system to creep at down-hole driving drill bit, its turning radius is between 90-305m, net horizontal section is about 300m, though these two kinds of horizontal well drilling systems have the long advantage of net horizontal section that gets out, but its technology complexity, be difficult to control, to thin storage layer, small size fault block oil reservoir, and the oil reservoir of some earth formation complexity is difficult to be suitable for, the well shaft fixing technology complexity, the drilling cost height.ZUBLIN short radius universal joint system is that a cover is mainly by the whipstock assembly, the horizontal well drilling system that flexible universal joint is formed, it has the net horizontal section that gets out to grow (the longest 200m of reaching), and fast advantage is lacked, turned to turning radius, but its operating procedure complexity, be difficult to control, the well logging difficulty is difficult for adding the pressure of the drill, drilling speed is low, easily offset direction is inapplicable to complex reservoir, and turning radius still shows greatly.The URRS system is by the whipstock assembly, drilling rod, the horizontal well drilling system that high-pressure nozzle is formed, though there is turning radius little (30-60cm) in this system, the advantage that is easy to control, but it is short that it gets out the horizontal well well bore, usually has only 20-50m, can't in pit shaft, directly turn to, need on sleeve pipe, to leave earlier window, reaming again, then whipstock could be installed, because it can only adopt injecting type to creep into, thereby inapplicable to the big storage layer of formation hardness, and well is flexible, this cover system also exists the completion trouble, the defective that difficulty and steering angle can't be regulated is owing to these reasons URRS system fails to promote the use of in actual production always.
One of purpose of the present invention is in order to overcome the defective that existing various horizontal well drilling technology device systems turning radius is big, operating procedure is complicated, creates that a cover can directly turn in greater than the 155mm pit shaft at internal diameter, the simple down-hole horizontal drilling system of operating procedure.
Two of purpose of the present invention is in order to provide the horizontal segment that gets out of cover to grow (40-80m) and can creep into towards a plurality of directions in straight well, inclined shaft, major radius horizontal well, in a bite well, get out many bores to horizontal well, and the big well right-angle steering level drilling system of net horizontal section cumulative length.
Three of the object of the invention is for a well right-angle steering level drilling system that cover net horizontal section well-completing process is simple, drilling cost is low is provided.
Four of purpose of the present invention, final purpose just of the present invention is for by createing a cover well right-angle steering level drilling system that can extensively adopt, the rate of oil and gas recovery, individual well oil gas produce speed, output increases substantially thereby make.
The present invention has designed one and has overlapped the well right-angle steering right-angle steering horizontal well system that mainly comprises drilling rod assembly, steering assembly, drill bit assembly for realizing its purpose.Wherein said drilling rod assembly by outside links, the flexible compound pipe that is positioned at the chain pipe that is linked to be by chain link forms, on chain link, be provided with locking stop, lock arm, articulated joint and articulated mouth, also be provided with many micropores around each chain link, accompany spring shape steel wire tube within it in the middle of the pipe; Be connected with the connection guide rod in the upper end of drilling rod assembly, its upper end is provided with the braking head, and the lower end of drilling rod assembly links to each other with drill bit assembly.The last pitch chain joint upper end is provided with screw-socket.Steering assembly by shell, turn to passage, control to turn to roller bearing, chain link lock switch, Roll to form, steering angle regulation cock and support sheath seat thereof also can be arranged.Be connected with the drilling rod conduit in the steering assembly upper end, there is Brake Block the conduit upper end, and the lower end is connected with bracing or strutting arrangement, and the bracing or strutting arrangement upper end is provided with spacing deck and dop, and the lower end is a support bar.Described drill bit assembly is made up of little turbine, universal joint, spline head, spline sheath, turbine wheel shaft, and wherein turbine is put in the interior pipe in the former pitch chains joint of drilling rod assembly.Described drill bit assembly also can be for forming jet bit by nozzle, blade.
Comprehensively compare with known various down-hole horizontal drilling systems, advantage of the present invention is: need not deflecting, in pit shaft right-angle steering, simple to operate, the rate of oil and gas recovery is obviously improved.
Compare with straight well drilling technology equipment, the present invention can make drilling well save fracturing work, and the rate of oil and gas recovery is improved more than 5%, and individual well oil gas daily output improves more than 5 times.This system both had been suitable for boring new well and had adopted, and was fit to old well reform again.
Describe embodiments of the invention in detail below in conjunction with accompanying drawing:
Fig. 1 is an overall structure schematic diagram of the present invention.
Fig. 2 is the structure and the assembly relation schematic diagram of drilling rod assembly of the present invention
Fig. 3 is a link configuration diagrammatic bottom view of the present invention.
Fig. 4 is the annexation schematic diagram of chain internode of the present invention.
Fig. 5 is a steering assembly structural representation of the present invention.
Fig. 6 is this another kind of steering assembly (adjustable) structural representation.
Fig. 7 is a drill bit assembly structural representation of the present invention.
Fig. 8 is this another kind (injecting type) drill bit assembly structural representation.
Fig. 9 is a buffer structure schematic diagram of the present invention.
Figure 10 is a drilling rod assembly inner tube structure schematic diagram of the present invention.
Figure 11 is the plan view of horizontal well well bore of the present invention system.
Figure 12 is the stereochemical structure view of horizontal well of the present invention (radial well) well bore system.
Embodiment 1:
Referring to Fig. 1, well right-angle steering level drilling system mainly is made up of drilling rod assembly 1, steering assembly 2, drill bit assembly 3 three parts.Secondly, also have drilling rod to connect guide rod 4 in the upper end of drilling rod assembly and which is provided with crossover sub 5, the common drilling rod of termination on the crossover sub, the upper end of steering assembly is connected with drilling rod conduit 6, and the conduit upper end is provided with limit base 7; The lower end is provided with bracing or strutting arrangement 8.Wherein said drilling rod assembly is positioned at chain pipe pipe 102 compositions that chain link is linked to be by outside links 101, is provided with the locking device of being made up of locking stop 103, latch wall 104, guide groove 105 and twists section header 106, hinge joint mouth 107, micropore 108 on chain link.Chain link 101 links together by strand section header, strand joint mouth, forms the chain pipe 109 of a perforation therebetween, and interior pipe 102 is arranged in the chain pipe, accompanies wire spring shape pipe 110 in the middle of interior pipe.Lock arm 104 can be stuck on the locking stop 103, and chain link 101 1 joint is connected one saves land and lock together, and makes the drilling rod assembly become the rigidity body of rod that any direction all can not bend.This locking device can be opened by 202 controls of block switch in steering assembly 2.Steering assembly 2 by shell 201, block switch 202, roller bearing 203, turn to passage 204 and Roll 205 to form.Drill bit assembly 3 comprises turbine 301, universal joint 302, spline head 303, spline sheath 304, turbine 305 and drill bit 306, and when drill bit assembly was crooked, spline head 303 can move around in spline sheath 304, to support the change of going distance between turbine.Drilling rod guide rod 4 is a common steel tube, and its upper end is connected with spacing 9, and the lower end that drilling rod connects guide rod 4 is connected with snubber 10, it is by snubber bar 11, buffer spring 12 is formed, and it can make added the pressure of the drill buffering, store, and has avoided too tightly drill bit being damaged because of drill bit and ground interlayer extruding.The lower end of snubber is crossed screw-socket 13 with the upper end first segment links of drilling rod assembly 1 and is linked to each other.Bracing or strutting arrangement 8 is by spacing 14, limit base 15, and support bar 16 is formed, and is provided with spline 17 on spacing head, and limit base is provided with keyway 18, and both can engage, thereby the orientation of this system is limited.
After a bite straight well, inclined shaft completion, at first log well, find out the definite position of oil gas storage layer, and tendency, inclination angle, on the sleeve pipe of the position of storage layer, leave a window 16 about long 50cm in the down-hole then, just do not need " to have windowed " during barefoot completion certainly.Assemble this system at well head, and regulate the length of support bar 13, make this system's lower going-into-well after, steering assembly 2 just window 16, mention then, make on the supporting seat spacing 14 shift out the spacing limit base 15 that goes out, rotate this system, carry out orientation, the orientation presses down after determining, spacing 14 falls into limit base 15, and key and keyway are meshing, system is promptly locked, no longer rotates.Turn on pump then, to delivered downhole high pressure drilling liquid, add the pressure of the drill simultaneously, drilling fluid connects guide rod 4 by last stacks, pipe 102 in the snubber 11 drilling rod assemblies, drive turbine 301 rotations of drill bit assembly 3, its rotating torque, drives drill bit 306 and rotates step by step to being forwarded to drill bit by universal joint 302, turbine wheel shaft 305, pierce the stratum, and push ahead with nearly horizontal direction along the storage aspect gradually.In drilling process, when drilling rod assembly 1 passes through steering assembly 2, after the drilling rod assembly enters and turns to passage 204, block gauge tap 202 in the steering gear is pressed the lock arm 104 of chain link 101 inwards, turn to passage 204 inwalls to give an one tendency power simultaneously, be subjected to the effect of this two factor, lock arm 104 block 103 that goes out of lock, locking device is opened, because interior pipe is flexible, so the drilling rod 1 of this moment can be around the strand joint 106 of chain internode, 107 rotate, bend, and smoothly by turning to passage 204, the pressure of the drill of this moment is by strand joint 106,107 transmissions, resistance and the pressure of the drill loss when roller bearing 203 has reduced the drilling rod assembly by steering assembly, Roll 205 have reduced to turn to assembly 2 to move up and down again and the resistance when changeing.After the chain link on the drilling rod assembly 101 enters the stratum by steering assembly, be subjected to the thrust of drilling well and the restriction of jewel hole, brill is decided arm 104 and is stuck in again on the locking stop 103 of adjacent link, locking device center of gravity locking again, make the drilling rod assembly become unyielding rigid body again, because the drilling rod assembly enters in the stratum, can not run into two situations that factor occurs simultaneously that locking device is opened again, so drilling rod assembly chain internode locking device can not opened in the stratum, the drilling rod assembly just can not bend yet, thereby has guaranteed the direction of well and crept into angle.When interior turbo-several pitch chains joint by steering assembly 2 turn to passage 204 time, locking device is opened, the drilling rod assembly bends, spline head 303 moves key sheath 304 in counteracting its spacing from change, does not influence the moment transmission.When because of needs the drilling rod assembly being pulled back, same drilling rod assembly one advances to turn to passage 204, and its locking device promptly is opened, and smoothly by steering assembly 2.
After the borehole length by design is all pierced the stratum with the drilling rod assembly of being adorned, pull back slightly, rotate then, the screw-socket of final section chain link upper end of outwarding winding, press down again, the drilling rod assembly all is pressed into the stratum, draws on again, the interface of 306 on interior pipe 102 and drill bit is drawn back, interior pipe is pulled out outside the well, after lower end braking 9 that drilling rod connects guide rod 4 arrived to the Brake Block 7 of drilling rod conduit upper end, system was pulled up, and pulls out outside the well, only will stay in the well by the chain pipe 109 that chain link is linked to be, serve as the well cementation sleeve pipe, saved complicated well shaft fixing technology, the oil gas in the stratum promptly infiltrates in the chain pipe 109 by aperture on the chain link 101 108 and converges to the shaft bottom.But also interior pipe 102 might be broken from the centre, this relation is little, and is because oil gas can flow by the space between interior Guan Yulian pipe, little to the oil and gas production influence.
After outside native system is drawn out well, again load onto new Design of length good drilling rod assembly and drill bit assembly again, lower going-into-well is also directed down again, creeps into from another orientation, through repeatedly the processing of creeping into, just can in a bite well, to all the winds get out flat (radially) well of many mouthfuls of horizontal saliva like this.The well bore system is become as plan view as shown in figure 11, and three-dimensional view is a structural system shown in Figure 12.
Embodiment 2:
Embodiment 2 is basic identical with enforcement 1 well right-angle steering level drilling system structure and the operating principle that provides, and difference is that the control steering angle of the steering assembly 2 that embodiment 1 is adopted is fixed as 90 degree.And the steering angle of the steering assembly that embodiment 2 is adopted can be regulated arbitrarily between 100 degree at 30 degree, its structure structure that steering assembly had in having embodiment, also have steering angle regulation cock 206, regulation cock support sheath 207, limit bolt 208 it by length adjustment to three regulation cocks 206, regulate and selected angle.
Embodiment 3:
The structure of present embodiment and preceding two enforcement structures are basic identical, and its difference is the jet bit of drill bit assembly for being made up of nozzle 19 blades 20 that present embodiment adopts.Adopt this drill bit combination drill horizontal well for loose storage layer, drilling speed is improved.
Claims (8)
1, a kind of down-hole drilling system, particularly can in pit shaft, make the well right-angle steering level drilling system of right-angle steering, it comprises drilling rod assembly, steering assembly, drill bit assembly, it is characterized in that described drilling rod assembly by outside links, the combined type pipe that is positioned at the chain pipe that chain link is linked to be forms, be provided with the connection guide rod in the top, lower end (front end) is connected with drill bit; Described steering assembly turns to roller bearing and drilling rod assembly chain link lock block switch to form by shell, guide channel, control, is connected with the drilling rod conduit in the top, and the lower end is provided with bracing or strutting arrangement; Described drill bit assembly comprises miniature turbine, universal joint, spline, spline sheath, turbine wheel shaft and drill bit.
2, well right-angle steering well drilling system as claimed in claim 1 is characterized in that described drill bit assembly also can be a high-pressure injection drill bit that includes only nozzle, blade.
3, well right-angle steering level drilling system as claimed in claim 1 is characterized in that the outside links of drilling rod assembly is provided with locking device, comprises locking stop, lock arm and guide groove.
4, well right-angle steering level drilling system as claimed in claim 1 is characterized in that, the outside links of described drilling rod assembly is provided with micropore, and in the end the upper end of shot of a cable joint is provided with screw-socket.
5, well right-angle steering level drilling system as claimed in claim 1 is characterized in that the inside of described drilling rod assembly is added with wire spring shape pipe in the pipe in compound.
6, well right-angle steering level drilling system as claimed in claim 1 is characterized in that described drilling rod assembly is provided with snubber with being connected between the guide rod.
7, well right-angle steering level drilling system is characterized in that the connection guide rod upper end that is connected on the drilling rod assembly is provided with the braking head according to claim 1, and drilling rod conduit lower end is provided with Brake Block.
8, must ask 1 as power as described in well right-angle steering level drilling system it is characterized in that described steering gear becomes also and can form for supporting the sheath seat by shell, guide channel, roller bearing, steering angle regulation cock and regulation cock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92108173 CN1080015A (en) | 1992-06-18 | 1992-06-18 | Down-hole right-angle steering horizontal drilling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92108173 CN1080015A (en) | 1992-06-18 | 1992-06-18 | Down-hole right-angle steering horizontal drilling system |
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| Publication Number | Publication Date |
|---|---|
| CN1080015A true CN1080015A (en) | 1993-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92108173 Pending CN1080015A (en) | 1992-06-18 | 1992-06-18 | Down-hole right-angle steering horizontal drilling system |
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| CN (1) | CN1080015A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101824964A (en) * | 2010-04-16 | 2010-09-08 | 张建华 | Downhole drill of intelligent underground multi-branch horizontal drilling completion system |
| CN101946057A (en) * | 2007-12-21 | 2011-01-12 | 普拉德研究及开发股份有限公司 | Steerable drilling system |
| CN101956548A (en) * | 2010-09-25 | 2011-01-26 | 北京奥瑞安能源技术开发有限公司 | Coal bed methane multi-branch horizontal well system and modification method thereof |
| CN101660391B (en) * | 2008-08-29 | 2012-01-11 | 中国石油天然气集团公司 | Radial horizontal drilling device |
| CN104847284A (en) * | 2015-05-21 | 2015-08-19 | 宝鸡石油机械有限责任公司 | Drill pipe buffering basket for gate ramp of offshore drilling module |
| CN109630023A (en) * | 2018-12-01 | 2019-04-16 | 谭雄卫 | In the method and ground device for regulating direction of soft stratum laying horizontal pipe |
| CN110630182A (en) * | 2019-10-28 | 2019-12-31 | 煤科集团沈阳研究院有限公司 | Hydraulic jet drilling small-radius radial slewing device and method |
| CN113586033A (en) * | 2021-08-05 | 2021-11-02 | 思凡(上海)石油设备有限公司 | Gas detection device for logging |
-
1992
- 1992-06-18 CN CN 92108173 patent/CN1080015A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101946057A (en) * | 2007-12-21 | 2011-01-12 | 普拉德研究及开发股份有限公司 | Steerable drilling system |
| CN101660391B (en) * | 2008-08-29 | 2012-01-11 | 中国石油天然气集团公司 | Radial horizontal drilling device |
| CN101824964A (en) * | 2010-04-16 | 2010-09-08 | 张建华 | Downhole drill of intelligent underground multi-branch horizontal drilling completion system |
| CN101824964B (en) * | 2010-04-16 | 2013-01-23 | 张建华 | Downhole drill of intelligent underground multi-branch horizontal drilling completion system |
| CN101956548A (en) * | 2010-09-25 | 2011-01-26 | 北京奥瑞安能源技术开发有限公司 | Coal bed methane multi-branch horizontal well system and modification method thereof |
| CN101956548B (en) * | 2010-09-25 | 2013-05-08 | 北京奥瑞安能源技术开发有限公司 | Coal bed methane multi-branch horizontal well system and modification method thereof |
| CN104847284A (en) * | 2015-05-21 | 2015-08-19 | 宝鸡石油机械有限责任公司 | Drill pipe buffering basket for gate ramp of offshore drilling module |
| CN109630023A (en) * | 2018-12-01 | 2019-04-16 | 谭雄卫 | In the method and ground device for regulating direction of soft stratum laying horizontal pipe |
| CN109630023B (en) * | 2018-12-01 | 2024-05-10 | 谭雄卫 | Method for laying horizontal pipeline in weak stratum and ground direction adjusting device |
| CN110630182A (en) * | 2019-10-28 | 2019-12-31 | 煤科集团沈阳研究院有限公司 | Hydraulic jet drilling small-radius radial slewing device and method |
| CN113586033A (en) * | 2021-08-05 | 2021-11-02 | 思凡(上海)石油设备有限公司 | Gas detection device for logging |
| CN113586033B (en) * | 2021-08-05 | 2023-09-26 | 思凡(上海)石油设备有限公司 | Gas detection device for logging |
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