CN111852358B - Multi-branch yield-increasing drilling Cheng Pahang tool - Google Patents
Multi-branch yield-increasing drilling Cheng Pahang tool Download PDFInfo
- Publication number
- CN111852358B CN111852358B CN202010860905.1A CN202010860905A CN111852358B CN 111852358 B CN111852358 B CN 111852358B CN 202010860905 A CN202010860905 A CN 202010860905A CN 111852358 B CN111852358 B CN 111852358B
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- China
- Prior art keywords
- crawling
- tooth
- block
- upper joint
- drilling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000005553 drilling Methods 0.000 title claims abstract description 46
- 230000009193 crawling Effects 0.000 claims abstract description 60
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 230000007704 transition Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 6
- 230000000638 stimulation Effects 0.000 claims 4
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
Abstract
The invention discloses a multi-branch drilling and extended-range crawling tool which sequentially comprises an upper joint, a power screw and a lower joint; the center of the upper joint is provided with a cam, the center of the cam is fixedly provided with a transmission rod, and the transmission rod is connected with a power screw rod; the upper joint is circumferentially provided with a plurality of groups of crawling tooth propelling mechanisms matched with the cams. According to the invention, the power screw drives the transmission rod to rotate through the universal joint, and the cam fixedly connected with the transmission rod also starts to rotate, so that the inner connecting block of the spring and the driving block start to move radially outwards. The problem that the device cannot provide enough weight on bit to continue drilling due to increase of friction in the process of descending the multi-branch production tool into the well is solved, and the drilling radius of the multi-branch production tool can be greatly improved.
Description
Technical Field
The invention relates to the technical field of petroleum and natural gas drilling tools, in particular to a multi-branch drilling and range-extending crawling tool.
Background
The multi-branch yield-increasing drilling technology is used as an emerging technology for replacing two operations of perforation and fracturing, so that the production radius of an oil well and a gas well is effectively increased, the yield of the oil well and the gas well is further increased, meanwhile, the multi-branch yield-increasing drilling technology adopts the original drilling mud as a rock carrying medium, clean water is used for replacement after drilling is completed, medium residues do not exist in a stratum, and pollution of residual liquid such as drilling liquid, fracturing liquid and the like to the stratum is effectively avoided. However, in the multi-branch yield increasing drilling process, the drill rod is a flexible drill rod, so that the drilled hole has the condition of irregular track, the high side of the drill rod is clung to the wall of the drilled hole, friction resistance is generated, the multi-branch yield increasing tool cannot provide enough drilling pressure due to increase of friction resistance in the drilling process, continuous drilling cannot be performed, even the situation that the tool is blocked occurs, and multi-branch yield increasing operation and operation effect are seriously influenced.
Disclosure of Invention
The invention aims to provide a multi-branch yield-increasing drilling and stroke-increasing crawling tool, so as to solve the problems of the prior art and effectively solve the problem that drilling cannot be continued due to increased friction resistance in the drilling process of the multi-branch yield-increasing tool.
In order to achieve the above object, the present invention provides the following solutions: the invention provides a multi-branch drilling and extended-range crawling tool which sequentially comprises an upper joint, a power screw and a lower joint; the center position of the upper joint is provided with a cam, the center position of the cam is fixedly provided with a transmission rod, and the transmission rod is connected with a power screw rod.
The upper joint is circumferentially provided with a plurality of groups of crawling tooth propelling mechanisms matched with the cams; the crawling tooth propelling mechanism comprises a roller matched with the cam, the roller shaft is connected with the roller shaft, two sides of the roller shaft are connected with the same spring inner connecting block in a shaft mode, the spring inner connecting block is detachably connected with a driving block, the outer side of the driving block is provided with a fixing block, and the fixing block is fixedly connected with the upper joint; the outside of spring interconnect piece has cup jointed drive block reset spring, drive block reset spring's both ends respectively with fixed block and spring interconnect piece fixed connection.
One end of the driving block is an inclined sliding surface, a crawling tooth is arranged on one side of the inclined sliding surface, the crawling tooth is arranged in the inner wall of the upper joint in a sliding manner, an inclined surface matched with the inclined sliding surface is arranged on one side of the crawling tooth, one end of a crawling tooth reset spring is connected on the other side of the crawling tooth, and the other end of the crawling tooth reset spring is fixedly connected with the upper joint; and the fixed block is provided with a through hole for the movement of the crawling teeth.
Preferably, a transition joint is arranged between the upper joint and the power screw rod, a universal joint is arranged in the transition joint, and the transmission rod is connected with the power screw rod through the universal joint.
Preferably, a power screw shell is arranged on the outer side of the power screw, and the outer diameter of the power screw shell is the same as the outer diameter of the upper connector and the outer diameter of the lower connector.
Preferably, the spring inner connecting block is H-shaped, one end of the spring inner connecting block is connected with the idler wheel through the idler wheel shaft, a groove for accommodating the reset spring of the driving block is formed in the outer side of the other end of the spring inner connecting block, an outer connecting cylinder is sleeved on the outer side of the spring inner connecting block, a sealing ring is arranged between the outer connecting cylinder and the spring inner connecting block, and the outer connecting cylinder is connected with the fixing block through threads.
Preferably, the upper joint is provided with a through hole for accommodating the fixing block, one side, far away from the spring, of the fixing block is externally sleeved with a fixing nut, the fixing nut is in threaded connection with the fixing block, and the outer side of the fixing nut and the outer side of the upper joint are positioned on the same horizontal line.
Preferably, a screw is fixedly arranged below the driving block, and a threaded hole matched with the screw of the driving block is formed in the spring inner connecting block.
Preferably, the crawling tooth comprises a crawling tooth part and a sliding part, the upper joint is provided with a cavity for accommodating the movement of the crawling tooth, and two ends of the crawling tooth reset spring are fixedly connected with the sliding part and the inner wall of the cavity respectively; the fixed block is provided with a through hole for the sliding part to move.
Preferably, the crawling tooth propelling mechanisms are provided with four groups, the included angle between every two adjacent groups of crawling tooth propelling mechanisms is 90 degrees, and the cam is provided with four protrusions.
The invention discloses the following technical effects:
when the creeping tool can not provide enough drilling pressure to continue drilling due to increasing friction in the drilling process, the power screw rod drives the transmission rod to rotate through the universal joint, and the cam fixedly connected with the transmission rod also starts to rotate, so that the connecting block and the driving block in the spring start to move radially outwards, and the inclined sliding surface on the driving block is matched with the inclined surface of the creeping tooth, so that the creeping tooth is pushed to move backwards, and the whole tool is pushed to move in the drilling direction. The problem that the drilling radius of the multi-branch production tool can be greatly improved due to the fact that friction is increased in the process of descending the multi-branch production tool, the problem that the drilling radius of the multi-branch production tool is small and the production effect is not obvious is solved, the problem that the drilling pressure is insufficient due to the fact that pressure transmission capacity of a flexible drill rod is insufficient is avoided, drilling speed is improved, drilling operation time is shortened, and further well construction period is shortened, and well construction cost is reduced; the oil-gas well operation tool has higher popularization value.
The multi-branch yield-increasing drilling tool has the advantages of wide application range, simplicity in operation, small requirements on drilling operation equipment and underground operation environment, small requirements on operators, and operation according to the original multi-branch yield-increasing drilling requirement, and is a multi-branch yield-increasing drilling tool with great popularization value.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a crawler according to the present invention;
FIG. 2 is a schematic view of the upper joint structure of the present invention;
FIG. 3 is a schematic view of the structure of the crawling tooth propulsion mechanism of the present invention;
FIG. 4 is a schematic view of the roller and cam mating structure of the present invention;
FIG. 5 is a schematic view of a transition joint structure according to the present invention.
Wherein 1 is the upper joint, 2 is the fixed block, 3 is the driving block, 4 is the transfer line, 5 is the cam, 6 is the tooth of crawling, 61 is the tooth portion of crawling, 62 is the sliding part, 7 is the spring internal connection piece, 8 is the driving block reset spring, 9 is the outer connecting cylinder, 10 is the sealing washer, 11 is the gyro wheel, 12 is the gyro wheel axle, 13 is the tooth reset spring of crawling, 14 is the power screw, 15 is the lower joint, 16 is the power screw shell, 17 is the universal joint, 18 is fixation nut, 19 is the transition joint.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Referring to fig. 1-5, the invention provides a multi-branch drilling and extended-range crawling tool which sequentially comprises an upper joint 1, a power screw 14 and a lower joint 15. The power screw 14 and the lower joint 15 are connected by threads. The center position of the upper joint 1 is provided with a cam 5, and the center position of the cam 5 is fixedly provided with a transmission rod 4. A transition joint 19 is arranged between the upper joint 1 and the power screw 14, a universal joint 17 is arranged in the transition joint 19, the transmission rod 4 is connected with the power screw 14 through the universal joint 17, the universal joint 17 realizes variable-angle power transmission, and the position of the transmission axis direction is changed. The outside of the power screw 14 is provided with a power screw shell 16, and the outer diameter of the power screw shell 16 is the same as the outer diameter of the upper joint 1 and the outer diameter of the lower joint 15, so that the outer surface of the crawling tool is a smooth surface.
Four groups of crawling tooth propelling mechanisms matched with the cam 5 are circumferentially arranged on the upper joint 1; the crawling tooth propelling mechanism comprises idler wheels 11 which are matched with the cams 5, the included angle between two adjacent crawling tooth propelling mechanisms is 90 degrees, namely the crawling tooth propelling mechanisms are uniformly distributed in the circumferential direction of the upper joint 1, and the cams 5 are provided with four protrusions, so that synchronous work of the four crawling tooth propelling mechanisms can be realized.
The roller 11 is connected with the roller shaft 12 in a shaft way, two sides of the roller shaft 12 are connected with the same spring inner connecting block 7 in a shaft way, the spring inner connecting block 7 is detachably connected with the driving block 3, a screw rod is fixedly arranged below the driving block 3, a threaded hole matched with the screw rod of the driving block 3 is formed in the spring inner connecting block 7, and therefore the fixed connection between the spring inner connecting block 7 and the driving block 3 is achieved.
The outer side of the driving block 3 is provided with a fixed block 2, and the fixed block 2 is fixedly connected with the upper joint 1; the upper joint 1 is provided with a through hole for accommodating the fixed block 2, a fixed nut 18 is sleeved outside one side of the fixed block 2 away from the spring inner connecting block 7, the fixed nut 18 is in threaded connection with the fixed block 2, and the outer side of the fixed nut 18 and the outer side of the upper joint 1 are positioned on the same horizontal line.
The outside of the spring inner connecting block 7 is sleeved with a driving block reset spring 8, and two ends of the driving block reset spring 8 are fixedly connected with the fixed block 2 and the spring inner connecting block 7 respectively. The spring inner connecting block 7 is H-shaped, one end of the spring inner connecting block 7 is connected with the roller 11 through the roller shaft 12, a groove for accommodating the driving block reset spring 8 is formed in the outer side of the other end of the spring inner connecting block 7, the outer connecting cylinder 9 is sleeved on the outer side of the spring inner connecting block 7, and the outer connecting cylinder 9 is connected with the fixed block 2 through threads. Be provided with sealing washer 10 between outer connecting cylinder 9 and the spring internal connection piece 7, sealing washer 10 is the rubber spare, and sealing washer 10 installation department designs has the drilling fluid circulation passageway, can play the effect of cooling, guarantees that the rubber spare can not become invalid because of the high temperature.
One end of the driving block 3 is an inclined sliding surface, a crawling tooth 6 is arranged on the inclined sliding surface towards one side, the crawling tooth 6 comprises a crawling tooth part 61 and a sliding part 62, a cavity for accommodating the movement of the crawling tooth 6 is formed in the upper joint 1, and the crawling tooth 6 can slide in the cavity; one side of the sliding part 62 in the crawling tooth 6 is provided with an inclined surface matched with the inclined sliding surface, the other side of the sliding part 62 in the crawling tooth 6 is connected with one end of a crawling tooth reset spring 13, and the other end of the crawling tooth reset spring 13 is fixedly connected with the inner wall of the cavity of the upper joint 1; the fixed block 2 is provided with a through hole for the sliding part 62 in the crawling tooth 6 to move.
The working process comprises the following steps: the branch yield increasing drilling and increasing Cheng Pahang tool is arranged between a flexible drill rod and a drill bit, and when the drilling process of the downhole branch yield increasing drilling and increasing creeping tool fails to provide enough drilling pressure to continue drilling, the power screw 14 drives the transmission rod 4 to rotate through the universal joint 17, and the cam 5 fixedly connected with the transmission rod 4 also starts to rotate, so that the spring inner connecting block 7 and the driving block 3 start to move radially outwards, and the creeping tooth 6 is pushed to move backwards due to the fact that the inclined sliding surface on the driving block 3 is matched with the inclined surface of the creeping tooth 6, and the tool is pushed to move integrally in the drilling direction. In the process, the driving block reset spring 8 and the crawling tooth reset spring 13 are in a compressed state, and when the groove part of the cam 5 is in contact with the roller 11, the driving block 3 and the crawling tooth 6 are reset under the action of the driving block reset spring 8 and the crawling tooth reset spring 13, so that one period of movement is completed.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (5)
1. A multi-branch yield-increasing drilling and range-increasing crawling tool is characterized in that: comprises an upper joint (1), a power screw (14) and a lower joint (15); the central position of the upper joint (1) is provided with a cam (5), the central position of the cam (5) is fixedly provided with a transmission rod (4), and the transmission rod (4) is connected with a power screw (14);
a plurality of groups of crawling tooth propelling mechanisms matched with the cams (5) are circumferentially arranged on the upper joint (1); the crawling tooth propelling mechanism comprises a roller (11) which is matched with the cam (5), the roller (11) is connected with a roller shaft (12) in a shaft way, two sides of the roller shaft (12) are connected with the same spring inner connecting block (7) in a shaft way, the spring inner connecting block (7) is detachably connected with a driving block (3), the outer side of the driving block (3) is provided with a fixed block (2), and the fixed block (2) is fixedly connected with the upper joint (1); the outer side of the spring inner connecting block (7) is sleeved with a driving block reset spring (8), and two ends of the driving block reset spring (8) are fixedly connected with the fixed block (2) and the spring inner connecting block (7) respectively;
one end of the driving block (3) is an inclined sliding surface, a crawling tooth (6) is arranged on one side of the inclined sliding surface, the crawling tooth (6) is arranged in the inner wall of the upper joint (1) in a sliding mode, an inclined surface matched with the inclined sliding surface is arranged on one side of the crawling tooth (6), one end of a crawling tooth reset spring (13) is connected to the other side of the crawling tooth (6), and the other end of the crawling tooth reset spring (13) is fixedly connected with the upper joint (1); the fixed block (2) is provided with a through hole for the movement of the crawling teeth (6);
a transition joint (19) is arranged between the upper joint (1) and the power screw (14), a universal joint (17) is arranged in the transition joint (19), and the transmission rod (4) is connected with the power screw (14) through the universal joint (17);
a power screw shell (16) is arranged outside the power screw (14), and the outer diameter of the power screw shell (16) is the same as the outer diameter of the upper joint (1) and the outer diameter of the lower joint (15);
the spring inner connecting block (7) is H-shaped, one end of the spring inner connecting block (7) is connected with the roller (11) through the roller shaft (12), a groove for accommodating the driving block reset spring (8) is formed in the outer side of the other end of the spring inner connecting block (7), an outer connecting cylinder (9) is sleeved on the outer side of the spring inner connecting block (7), a sealing ring (10) is arranged between the outer connecting cylinder (9) and the spring inner connecting block (7), and the outer connecting cylinder (9) is connected with the fixed block (2) through threads.
2. The multi-branch stimulation drilling and extended reach crawler of claim 1, wherein: the upper joint (1) is provided with a through hole for accommodating the fixed block (2), one side, far away from the spring, of the fixed block (2) is externally sleeved with a fixed nut (18), the fixed nut (18) is in threaded connection with the fixed block (2), and the outer side of the fixed nut (18) and the outer side of the upper joint (1) are positioned on the same horizontal line.
3. The multi-branch stimulation drilling and extended reach crawler of claim 1, wherein: the screw is fixedly arranged below the driving block (3), and a threaded hole matched with the screw of the driving block (3) is formed in the spring inner connecting block (7).
4. The multi-branch stimulation drilling and extended reach crawler of claim 1, wherein: the crawling tooth (6) comprises a crawling tooth part (61) and a sliding part (62), a cavity for accommodating the movement of the crawling tooth (6) is formed in the upper joint (1), and two ends of the crawling tooth reset spring (13) are fixedly connected with the sliding part (62) and the inner wall of the cavity respectively; the fixed block (2) is provided with a through hole for the sliding part (62) to move.
5. The multi-branch stimulation drilling and extended reach crawler of claim 1, wherein: the crawling tooth propelling mechanisms are provided with four groups, the included angle between every two adjacent groups of crawling tooth propelling mechanisms is 90 degrees, and the cam (5) is provided with four protrusions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010860905.1A CN111852358B (en) | 2020-08-25 | 2020-08-25 | Multi-branch yield-increasing drilling Cheng Pahang tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010860905.1A CN111852358B (en) | 2020-08-25 | 2020-08-25 | Multi-branch yield-increasing drilling Cheng Pahang tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111852358A CN111852358A (en) | 2020-10-30 |
| CN111852358B true CN111852358B (en) | 2024-03-19 |
Family
ID=72968106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010860905.1A Active CN111852358B (en) | 2020-08-25 | 2020-08-25 | Multi-branch yield-increasing drilling Cheng Pahang tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111852358B (en) |
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|---|---|---|---|---|
| GB1393388A (en) * | 1971-08-20 | 1975-05-07 | Ruston Bucyrus Ltd | Well drilling method and apparatus |
| US4484637A (en) * | 1979-01-19 | 1984-11-27 | Cooper Industries, Inc. | Positioning control system for rock drill support apparatus |
| US6234259B1 (en) * | 1999-05-06 | 2001-05-22 | Vector Magnetics Inc. | Multiple cam directional controller for steerable rotary drill |
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| CN207776794U (en) * | 2018-01-24 | 2018-08-28 | 西南石油大学 | The downhole tool of automatic vertical drilling is realized using cam four-bar mechanism |
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Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MX360072B (en) * | 2013-02-20 | 2018-10-22 | Halliburton Energy Services Inc | Downhole rotational lock mechanism. |
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2020
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| Publication number | Publication date |
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| CN111852358A (en) | 2020-10-30 |
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