CN111622672A - Method for drilling any tool surface branch by directional drilling auxiliary deflecting device - Google Patents
Method for drilling any tool surface branch by directional drilling auxiliary deflecting device Download PDFInfo
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- CN111622672A CN111622672A CN202010590164.XA CN202010590164A CN111622672A CN 111622672 A CN111622672 A CN 111622672A CN 202010590164 A CN202010590164 A CN 202010590164A CN 111622672 A CN111622672 A CN 111622672A
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- 238000005553 drilling Methods 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000000694 effects Effects 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 4
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 239000003245 coal Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B7/06—Deflecting the direction of boreholes
- E21B7/061—Deflecting the direction of boreholes the tool shaft advancing relative to a guide, e.g. a curved tube or a whipstock
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- Earth Drilling (AREA)
Abstract
The invention discloses a method for drilling any tool surface branch by using a directional drilling auxiliary deflecting device, which specifically comprises the following steps: 1) preparing materials and tools; 2) lifting the drilling tool; 3) a lower inlet hole bottom positioning tube and a positioner; 4) putting the whipstock into the whipstock; 5) drilling; 6) and (5) successfully judging the branch opening. Compared with the prior art, the invention has the advantages that: the directional drilling device has the advantages that the structure is simple, the processing is convenient, when the directional drilling needs to open the branch hole but the formed hole track can not meet the selection requirement of the branch position, the purpose of opening the branch hole can be realized by adopting the directional drilling device, and the bad effect that the drilling track is scrapped because the drilling track can not meet the design requirement is avoided; the drilling rate of the dip angle directional drilling and the directional drilling of the medium-thickness coal seam along the coal seam are improved, and the positions of the branch are manufactured by sections without intentionally adjusting the track in the normal drilling process.
Description
Technical Field
The invention relates to the field of drilling tools, in particular to the technical field of drilling any tool surface branch by using a directional drilling auxiliary deflecting device.
Background
When the drilling tool needs to branch in the practical application of directional drilling, the selection requirement of the branch position is often difficult to meet, and the manufacturing and selection of the branch position are greatly limited, particularly for negative-inclination drilling and directional drilling construction of a coal seam bedding layer with complex geology, the branch position needs to be manufactured and reserved frequently and deliberately, otherwise, once the drilling tool meets a top bottom plate or an abnormal area, a proper branch position cannot be found for branching, and the drilling tool is prone to be scrapped because the drilling tool cannot reach a designed track. If the track segmentation manufacturing branch-opening position is adjusted deliberately in the normal drilling process, the smoothness and the accuracy of the drilling track are sacrificed, and low-lying accumulated water in the track is easily caused to influence the later extraction effect, so that a method for opening branches by means of an auxiliary whipstock is needed to solve the problems.
Disclosure of Invention
The invention aims to solve the problems mentioned in the background technology and provides a method for drilling any tool surface branch by using a directional drilling auxiliary deflecting device.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
the directional drilling auxiliary deflecting device comprises a positioner and a deflecting device, wherein the positioner is of a cylindrical structure, one end of the positioner is a positioning inclined plane, and one end of the positioner, which is far away from the positioning inclined plane, is provided with a positioning cone; the whipstock is of a cylindrical structure, one end of the whipstock is a whipstock inclined plane, and one end, away from the whipstock, of the whipstock is a fixed inclined plane.
Preferably, the angle of the positioning inclined plane is the same as that of the fixing inclined plane.
Preferably, the diameter of the positioner and whipstock is equal to the diameter of the drill bit.
Preferably, the length of the positioner is 1.5 m-3 m, and the length of the whipstock is 1.5 m-3 m.
Preferably, the inclined plane angles of the positioning inclined plane, the deflecting inclined plane and the fixing inclined plane are 15-20 °.
A method for drilling any tool surface branch by using a directional drilling auxiliary deflecting device specifically comprises the following steps:
1) preparing materials and tools: processing a positioner and a whipstock for later use in a drilling site, and preparing a certain number of plug-in type hole bottom positioning pipes;
2) and (3) lifting the drilling tool: when the bottom of the directional drilling hole meets abnormal conditions or the deviation of the drilling track is large and branch holes need to be drilled, the drilling tool is lifted out after hole washing;
3) a lower inlet bottom positioning tube and a positioner: analyzing a drilling track, determining the position of a branch hole to be drilled, determining the length of a hole bottom positioning pipe according to the position of a hole bottom and the position of the branch point to be drilled, putting the hole bottom positioning pipe and a positioner into a drilled hole, enabling a positioning inclined plane of a cylindrical positioner to face the tool surface of the hole to be drilled, enabling a drill to abut against the positioning inclined plane of the positioner through a drilling machine by utilizing a hole bottom motor in a bending degree of 1.25 degrees, and sending the positioning inclined plane into the hole bottom all the time, enabling a drill bit and the positioning inclined plane to form a bow shape at the moment, enabling the tool surface of the hole bottom motor to face opposite to the inclined plane, and enabling the drilling tool not to rotate in the pushing process to avoid changing the;
4) and (3) descending a whipstock: the drilling tool is put out again, the whipstock is put in, the deflecting inclined plane of the whipstock faces to the tool face which needs to open the branch hole, the drill bit is propped against the deflecting inclined plane of the whipstock through the drilling machine and is always sent into the position of the positioner and propped until the drill bit cannot be pushed, at the moment, two reverse inclined planes of the positioner and the whipstock extrude towards each other to form a wedge-shaped fastening effect with the hole wall, the drilling tool cannot be rotated in the propping process, and the deflecting inclined plane of the whipstock is prevented from changing;
5) drilling: after the drilling tool abuts against a deflecting inclined surface of the deflecting device, the drilling tool retreats backwards for 1.0 meter, the tool surface is adjusted to enable the drill bit to face the position needing to be branched, the deflecting inclined surface abuts against the arch back of a motor elbow at the bottom of a hole at the moment, a support is provided for the arch back of the motor, the slow drilling machine is slowly pushed, and the branch is branched according to a branch-opening operation technology;
6) and (3) successfully judging the branch opening: returning water to become turbid; when the forward feeding is too large, the resistance is greatly increased or the pump is held back; during measurement, the inclination angle or the azimuth angle is changed according to a preset value.
As a preferred scheme, the bottom hole positioning pipe is made of a PVC pipe.
Compared with the prior art, the invention has the advantages that: the directional drilling device has the advantages that the structure is simple, the processing is convenient, when the directional drilling needs to open the branch hole but the formed hole track can not meet the selection requirement of the branch position, the purpose of opening the branch hole can be realized by adopting the directional drilling device, and the bad effect that the drilling track is scrapped because the drilling track can not meet the design requirement is avoided; the drilling rate of the dip angle directional drilling and the directional drilling of the medium-thickness coal seam along the coal seam are improved, and the positions of the branch are manufactured by sections without intentionally adjusting the track in the normal drilling process.
Drawings
Fig. 1 is a schematic structural diagram of a directional drilling auxiliary deflecting device.
FIG. 2 is a schematic view of a down hole bottom locator tube and locator.
Fig. 3 is a schematic view of a run-in whipstock.
Fig. 4 is a schematic illustration of a breakout with a directional drilling assisted whipstock.
As shown in the figure: 1. locator, 2, whipstock, 3, drilling tool, 4, hole bottom locating tube, 101, locating inclined plane, 102, locating cone, 201, whipstock inclined plane, 202, fixed inclined plane, 301, drill bit, 302, hole bottom motor.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the resulting manner or element must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; the connection can be mechanical connection or point connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
With reference to fig. 1, the directional drilling auxiliary deflecting device comprises a positioner 1 and a deflecting device 2, wherein the positioner 1 is of a cylindrical structure, a positioning inclined plane 101 is arranged at one end of the positioner 1, and a positioning cone 102 is arranged at one end, far away from the positioning inclined plane 101, of the positioner 1; whipstock 2 is cylindrical structure, whipstock 2 one end is whipstock inclined plane 201, whipstock 2 keeps away from the one end of whipstock inclined plane 201 is fixed inclined plane 202.
The positioning inclined plane 101 has the same angle as the fixing inclined plane 202.
The diameter of the positioner 1 and whipstock 2 is the same as the diameter of the drill bit 301.
The length of the positioner 1 is 1.5-3 m, and the length of the whipstock 2 is 1.5-3 m.
The inclined plane angles of the positioning inclined plane 101, the deflecting inclined plane 201 and the fixing inclined plane 202 are 15-20 degrees.
A method for drilling any tool surface branch by using a directional drilling auxiliary deflecting device specifically comprises the following steps:
1) preparing materials and tools: processing the positioner 1 and the whipstock 2 for standby in a drilling site, and preparing a certain number of plug-in type hole bottom positioning pipes 4;
2) and (3) lifting the drilling tool: when the bottom of the directional drilling hole meets abnormal conditions or the deviation of the drilling track is large and branch holes need to be drilled, the drilling tool 3 is lifted out after hole washing;
3) lower inlet bottom positioning tube 4 and positioner 1: analyzing a drilling track, determining the position of a hole needing to be branched, determining the length of a hole bottom positioning pipe 4 according to the position of a hole bottom and the position of the branch point needing to be branched, lowering the hole bottom positioning pipe 4 and a positioner 1 into the drilled hole, enabling a positioning inclined plane 101 of the cylindrical positioner 1 to face the tool surface of the hole needing to be branched, and pushing the positioning inclined plane 101 of the positioner 1 by a drilling machine through a hole bottom motor 302 at 1.25-degree bending degree to be sent to the hole bottom all the time, wherein the tool surface of a drill bit 301 and the positioning inclined plane 101 form a bow shape, namely the tool surface of the hole bottom motor 302 faces opposite to the inclined plane, the drilling machine 3 cannot be rotated in the pushing process, so that the orientation of the positioning inclined plane 101 is prevented from being changed, as shown in figure;
4) and (3) descending a whipstock 2: the drilling tool 3 is lifted out again, the whipstock 2 is put in, the deflecting inclined plane 201 of the whipstock 2 faces the tool surface which needs to open the branch hole, the drill 301 is propped against the deflecting inclined plane 201 of the whipstock 2 through the drilling machine and is sent into the position of the positioner 1 all the time and propped tightly until the drill cannot be pushed, at the moment, two reverse inclined planes of the positioner 1 and the whipstock 2 are extruded mutually to form a wedge-shaped fastening effect with the hole wall, the drilling tool 3 cannot be rotated in the propping process, and the deflecting inclined plane 201 of the whipstock 2 is prevented from changing in direction, as shown in the attached figure 3;
5) drilling: after the drilling tool 3 abuts against the deflecting inclined surface 201 of the deflecting device 2, the drilling tool 3 retreats backwards by 1.0 meter, the tool surface is adjusted to enable the drilling bit 301 to face the direction needing to be branched, at the moment, the deflecting inclined surface 201 abuts against the arch back of the elbow of the hole bottom motor 302 to support the arch back of the hole bottom motor 302, the drilling machine is slowly pushed, and the branch is branched according to the branch opening operation technology, as shown in the attached figure 4;
6) and (3) successfully judging the branch opening: returning water to become turbid; when the forward feeding is too large, the resistance is greatly increased or the pump is held back; during measurement, the inclination angle or the azimuth angle is changed according to a preset value.
The hole bottom positioning tube 4 is made of a PVC tube.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The utility model provides a directional drilling assists deflecting device, includes locator and whipstock, its characterized in that: the positioner is of a cylindrical structure, one end of the positioner is a positioning inclined plane, and one end of the positioner, which is far away from the positioning inclined plane, is provided with a positioning cone; the whipstock is of a cylindrical structure, one end of the whipstock is a whipstock inclined plane, and one end, away from the whipstock, of the whipstock is a fixed inclined plane.
2. The directional drilling auxiliary deflecting device according to claim 1, wherein: the angle of the positioning inclined plane is the same as that of the fixed inclined plane.
3. The directional drilling auxiliary deflecting device according to claim 1, wherein: the diameter of the positioner and whipstock is equal to the diameter of the drill bit.
4. The directional drilling auxiliary deflecting device according to claim 1, wherein: the length of the positioner is 1.5-3 m, and the length of the whipstock is 1.5-3 m.
5. The directional drilling auxiliary deflecting device according to claim 1, wherein: the inclined plane angles of the positioning inclined plane, the deflecting inclined plane and the fixing inclined plane are 15-20 degrees.
6. A method for drilling any tool surface branch by using a directional drilling auxiliary deflecting device is characterized by comprising the following steps:
1) preparing materials and tools: processing a positioner and a whipstock for later use in a drilling site, and preparing a certain number of plug-in type hole bottom positioning pipes;
2) and (3) lifting the drilling tool: when the bottom of the directional drilling hole meets abnormal conditions or the deviation of the drilling track is large and branch holes need to be drilled, the drilling tool is lifted out after hole washing;
3) a lower inlet bottom positioning tube and a positioner: analyzing a drilling track, determining the position of a branch hole to be drilled, determining the length of a hole bottom positioning pipe according to the position of a hole bottom and the position of the branch point to be drilled, putting the hole bottom positioning pipe and a positioner into a drilled hole, enabling a positioning inclined plane of a cylindrical positioner to face the tool surface of the hole to be drilled, enabling a drill to abut against the positioning inclined plane of the positioner through a drilling machine by utilizing a hole bottom motor in a bending degree of 1.25 degrees, and sending the positioning inclined plane into the hole bottom all the time, enabling a drill bit and the positioning inclined plane to form a bow shape at the moment, enabling the tool surface of the hole bottom motor to face opposite to the inclined plane, and enabling the drilling tool not to rotate in the pushing process to avoid changing the;
4) and (3) descending a whipstock: the drilling tool is put out again, the whipstock is put in, the deflecting inclined plane of the whipstock faces to the tool face which needs to open the branch hole, the drill bit is propped against the deflecting inclined plane of the whipstock through the drilling machine and is always sent into the position of the positioner and propped until the drill bit cannot be pushed, at the moment, two reverse inclined planes of the positioner and the whipstock extrude towards each other to form a wedge-shaped fastening effect with the hole wall, the drilling tool cannot be rotated in the propping process, and the deflecting inclined plane of the whipstock is prevented from changing;
5) drilling: after the drilling tool abuts against a deflecting inclined surface of the deflecting device, the drilling tool retreats backwards for 1.0 meter, the tool surface is adjusted to enable the drill bit to face the position needing to be branched, the deflecting inclined surface abuts against the arch back of a motor elbow at the bottom of a hole at the moment, a support is provided for the arch back of the motor, the slow drilling machine is slowly pushed, and the branch is branched according to a branch-opening operation technology;
6) and (3) successfully judging the branch opening: returning water to become turbid; when the forward feeding is too large, the resistance is greatly increased or the pump is held back; during measurement, the inclination angle or the azimuth angle is changed according to a preset value.
7. The method of drilling any toolface open branch with directional drilling assisted whipstock as claimed in claim 6, wherein: the hole bottom positioning pipe is made of a PVC pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010590164.XA CN111622672A (en) | 2020-06-24 | 2020-06-24 | Method for drilling any tool surface branch by directional drilling auxiliary deflecting device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010590164.XA CN111622672A (en) | 2020-06-24 | 2020-06-24 | Method for drilling any tool surface branch by directional drilling auxiliary deflecting device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113062692A (en) * | 2021-03-15 | 2021-07-02 | 中煤科工集团西安研究院有限公司 | Short-distance multi-branch sidetrack drilling tool and drilling method for coal mine underground directional hole |
| CN113445915A (en) * | 2021-07-09 | 2021-09-28 | 中煤科工集团沈阳研究院有限公司 | Hydraulic deflecting directional drilling device and method |
| CN114922605A (en) * | 2022-05-10 | 2022-08-19 | 中煤科工集团西安研究院有限公司 | Method for compositely opening branches of coal mine down-hole coal seam directional hole |
-
2020
- 2020-06-24 CN CN202010590164.XA patent/CN111622672A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113062692A (en) * | 2021-03-15 | 2021-07-02 | 中煤科工集团西安研究院有限公司 | Short-distance multi-branch sidetrack drilling tool and drilling method for coal mine underground directional hole |
| CN113445915A (en) * | 2021-07-09 | 2021-09-28 | 中煤科工集团沈阳研究院有限公司 | Hydraulic deflecting directional drilling device and method |
| CN113445915B (en) * | 2021-07-09 | 2024-04-26 | 中煤科工集团沈阳研究院有限公司 | Hydraulic deflecting directional drilling device and method |
| CN114922605A (en) * | 2022-05-10 | 2022-08-19 | 中煤科工集团西安研究院有限公司 | Method for compositely opening branches of coal mine down-hole coal seam directional hole |
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