CN111155943A - Stable torsion pressurizing device and drilling tool assembly comprising same - Google Patents
Stable torsion pressurizing device and drilling tool assembly comprising same Download PDFInfo
- Publication number
- CN111155943A CN111155943A CN201811319717.7A CN201811319717A CN111155943A CN 111155943 A CN111155943 A CN 111155943A CN 201811319717 A CN201811319717 A CN 201811319717A CN 111155943 A CN111155943 A CN 111155943A
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- Prior art keywords
- stabilizing
- torsion
- joint
- lower joint
- torque
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Links
- 238000005553 drilling Methods 0.000 title claims abstract description 29
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 42
- 239000003381 stabilizer Substances 0.000 description 13
- 230000000694 effects Effects 0.000 description 6
- 230000035939 shock Effects 0.000 description 4
- 239000011435 rock Substances 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/18—Pipes provided with plural fluid passages
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a torsion-stabilizing pressurizing device and a drilling tool assembly comprising the same, wherein the torsion-stabilizing pressurizing device comprises an upper joint; the upper end of the lower joint can extend into the inner cavity of the upper joint, and the upper joint is in clearance type circumferential clamping connection with the lower joint; the torsion stabilizing and pressurizing device can transmit the bit pressure and the axial impact force, and can absorb and release the torque impact on the drill rod and the drill bit, thereby improving the mechanical drilling speed of the drill string in different stratums and further prolonging the service life of the drill bit.
Description
Technical Field
The invention relates to the technical field of oil and gas field drilling, in particular to a torsion stabilizing and pressurizing device and a drilling tool assembly comprising the same.
Background
In the technical field of drilling construction of petroleum engineering, when drilling in hard strata such as gravel-containing strata and igneous rocks, an acceleration tool is arranged to increase axial acting force or impact force so as to improve the mechanical drilling speed. However, when the axial impact is increased, the torque fluctuation of the drill bit or the downhole drilling tool is large, and the instantaneous torque impact affects the drill bit greatly, so that the drill bit is easily damaged. In the application of soft stratum, the effect of increasing axial force or impact force acceleration is not obvious due to stick-slip effect. The drilling speed of soft to medium-hard strata can be improved by increasing the torsional impact to overcome the stick-slip effect, but the axial acting force in hard and brittle strata is insufficient, and the rock breaking efficiency is low.
Therefore, it is a technical problem to be solved to invent a torque-stabilizing pressurizing device and a drilling tool assembly comprising the same, which can realize weight-on-bit, axial impact force transmission, absorption or release of torsional impact on a drill rod and a drill bit to improve the rate of penetration in different strata.
Disclosure of Invention
Aiming at part or all of the technical problems in the prior art, the invention provides a torsion stabilizing and pressurizing device and a drilling tool assembly comprising the same.
According to an aspect of the present invention, there is provided a torsion stabilizing pressurizing apparatus, including:
an upper joint is arranged on the upper end of the connecting rod,
the upper end of the lower joint can extend into the inner cavity of the upper joint and the upper joint is in clearance type circumferential clamping with the lower joint,
a torque stabilizing component arranged between the upper joint and the lower joint,
wherein, the upper joint and the lower joint limit the axial position through the steady twist assembly.
In one embodiment, the torque stabilizing assembly comprises:
a first groove provided on an outer wall of the lower joint,
a limit ring fixedly arranged on the inner wall of the upper joint, the limit ring radially extends into the first groove,
the upper end of the torsion stabilizing piece is arranged between the limiting ring and the upper end wall of the first groove and is connected with the lower connector.
In one embodiment, the torque stabilizer has:
a cylindrical body which can be sleeved on the outer wall of the first groove of the lower joint,
the seam hole is spirally arranged on the outer wall of the body.
In one embodiment, the ratio of the axial dimension of the slot to the axial dimension of the space between adjacent slots is 0.2-0.5.
In one embodiment, the slit is filled with an elastic rubber member.
In one embodiment, the rubber member is configured as a tubular member having a square cross section.
In one embodiment, an axial recess is provided at the upper end of the torque stabilizer for engaging with a tooth provided on the upper end wall of the first recess of the lower adapter.
In one embodiment, a plurality of flow passages are provided at the upper end of the lower joint for communicating the inner cavity of the lower joint and the annulus between the lower joint and the upper joint, wherein the openings of the partial flow passages are provided on the upper end face of the lower joint.
In one embodiment, a seal is provided between the upper and lower fittings at the lower end of the torque stabilizing assembly.
According to another aspect of the present invention, there is provided a drilling assembly comprising:
a drill bit is arranged on the drill bit body,
an impactor arranged above the drill bit and provided with a hammer,
the torque-stabilizing pressurizing device is arranged between the drill bit and the impactor,
wherein the hammer ram can extend axially into the inner cavity of the upper coupling and apply a load to the lower coupling.
Compared with the prior art, the torsion stabilizing and pressurizing device has the advantages that the torsion stabilizing and pressurizing device transfers the bit pressure and the axial impact force and balances the torque on the drilling tool assembly through the clamping connection of the upper joint and the lower joint, and can absorb or release the torque impact on the drilling tool assembly through the arrangement of the torsion stabilizing assembly, so that the mechanical drilling speed is improved, the service life of a drill bit is prolonged, and the torsion stabilizing and pressurizing device can be suitable for drilling in stratums with different hardness.
Drawings
Preferred embodiments of the present invention will be described in detail below with reference to the attached drawing figures, wherein:
FIG. 1 illustrates a torsion stabilizing compression device according to one embodiment of the present invention;
FIG. 2 is section A-A from FIG. 1;
FIG. 3 is a perspective view of the lower joint;
FIG. 4 is a perspective view of a torque stabilizer;
FIG. 5 shows a drilling assembly according to an embodiment of the present invention;
in the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
Detailed Description
The invention will be further explained with reference to the drawings.
Fig. 1 shows a torque-stabilizing pressurizing apparatus 100 according to the present invention. As shown in fig. 1, the torsion stabilizing pressurizing apparatus 100 includes an upper joint 1, a lower joint 2 and a torsion stabilizing assembly 3. Wherein, the upper joint 1 is cylindrical and plays a role in connection. The lower joint 2 is cylindrical, and the upper end of the lower joint can extend into the inner cavity of the upper joint 1. And the upper joint 1 and the lower joint 2 are connected through a clamping assembly with a circumferential gap. The torque stabilizing assembly 3 is arranged between the upper joint 1 and the lower joint 2 and plays a role in absorbing or releasing torque impact. At the same time, the torque stabilizing assembly 3 defines the axial position of the upper joint 1 relative to the lower joint 2.
Specifically, a first groove 21 is provided on the outer wall of the middle section of the lower joint 2. The outer wall of the lower joint 2 is sleeved with a limiting ring 4. The limiting ring 4 is located in the first groove 21 and is abutted against the lower end wall of the first groove 21. Meanwhile, the limiting ring 4 is positioned in the inner cavity of the upper joint 1 and is in interference fit with the upper joint 1, so that the limiting ring 4 is fixedly connected with the upper joint 1. A torsion stabilizing piece 5 is arranged between the limiting ring 4 and the upper end wall of the first groove 21, and the upper end of the torsion stabilizing piece 5 is connected with the lower joint 2. Because, the top connection 1 part cup joints on the outer wall of lower clutch 2, and both circumference joint, can inject the axial position of surely turning round piece 5 and lower clutch 2 with spacing ring 4 that top connection 1 is fixed.
In a preferred embodiment, as shown in fig. 4, the torque stabilizer 5 has a cylindrical body 51 and a slit 52 provided in the body 51 and communicating inside and outside. Further preferably, the slot 52 extends helically on the outer wall of the body 51. Still further preferably, the ratio of the axial dimension of a slot 52 to the axial dimension of the space between adjacent slots 52 is 0.2-0.5, for example, 0.3. The stable torsion piece 5 is simple in structure and convenient to process. Meanwhile, the torsion stabilizing piece 5 with the structure can better absorb torque and avoid torque impact between the upper joint 1 and the lower joint 2, so that a drill bit (not shown in the figure) is protected and the mechanical drilling speed is improved.
In use, the torque stabilizer 100 is positioned on the drill string above the drill bit. During drilling, torque is transmitted to the lower joint 2 through the upper joint 1 and the torque stabilizer 5. When the upper drill rod connected with the upper joint 1 is over-torqued, a part of the torque is absorbed by the torque stabilizer 5 to reduce the torque impact on the drill bit connected with the lower joint 2. When the torque of the upper drill rod connected with the upper joint 1 is reduced, the torque stabilizing piece 5 releases the storage capacity, the torque on the drill bit connected with the lower joint 2 is increased, and the mechanical drilling speed is improved. And the stratum applies the counter torque to the bit, transmit to the lower joint 2 connected with bit, and transmit to the steady torsion piece 5, the spiral slotted hole 52 of the steady torsion piece 5 deforms, absorb some torque capacity, then transmit the counter torque to the upper joint 1, thus prevent the instantaneous torque from being too large, damaging the bit.
To further increase the torque shock absorbing effect of the torque stabilizer 5, an elastic rubber member (not shown) is filled in the slit 52. Preferably, the rubber member is configured as a tubular member having a square cross section. The rubber member may be bonded at the slit 52. On the one hand, the rubber member is twisted following the body 51, and plays a role of absorbing torque shock. On the other hand, when an impactor is arranged at the upper end of the torsion stabilizing pressurizing device 100 and an axial impact load is applied, the rubber piece can play a role in protecting the torsion stabilizing piece 5.
The upper end of the torque stabilizer 5 is provided with an axial notch 53. Meanwhile, as shown in fig. 3, a convex tooth 22 is provided on the upper end wall of the first groove 21 of the lower joint 2. The teeth 22 and the notches 53 form a snap-fit structure, so that torque can be transmitted between the upper end of the torque stabilizer 5 and the lower joint 2.
As shown in fig. 2 and 3, an axially extending projection 23 is provided on the outer wall of the lower joint 2. Meanwhile, a second groove 11 extending axially is provided on the inner wall of the upper joint 1. The projection 23 can be inserted into the second recess 11 and form a fit therewith. Meanwhile, the circumferential dimension of the projection 23 is smaller than that of the second groove 11, so that both the upper joint 1 and the lower joint 2 are clearance-fitted. Preferably, a plurality of projections 23 may be provided at intervals in the circumferential direction. Correspondingly, in the circumferential direction, a plurality of second grooves 11 are provided at intervals to match the projections 23. The structure is simple, and the torque of the drill rod can be well transmitted.
An annulus 6 is formed between the upper end of the lower joint 2 and the upper joint 1. At the same time, a flow passage 24 is provided at the upper end of the lower connector 2 for communicating the inner cavity of the lower connector 2 with the annulus 6. Thus, the drilling fluid in the inner cavity of the upper joint 1 enters the annular space 6 and then enters the inner cavity of the lower joint 2 through the flow passage 24. Preferably, a plurality of flow passages 24 communicating inside and outside are provided on the wall of the lower joint 2, while openings of part of the flow passages 24 are provided on the upper end face of the lower joint 2. Under the condition that the impactor 201 is arranged at the upper end of the torsion stabilizing and pressurizing device 100, when the impact hammer 202 applies force to the upper end face of the lower connector 2, the impact hammer 202 can block part of the opening of the flow channel 24 so as to reduce the flow area of drilling fluid, thereby improving a bottom hole flow field, reducing the pressure holding effect and improving the rock carrying effect.
A sealing member 7 is arranged between the upper joint 1 and the lower joint 2 at the lower end of the torque stabilizing assembly 3. The seal 7 acts as a seal to prevent loss of liquid from the interior of the upper connector 1.
Preferably, the upper joint 1 may be a split structure. For example, an outer sleeve 8 and an outer cylinder 9 may be included. Wherein, the outer sleeve 8 and the outer cylinder 9 are both cylindrical, and the outer cylinder 9 is arranged at the upper end of the outer sleeve 8. Threads are provided on the inner wall of the upper end of the outer cylinder 9 to connect with other components. Meanwhile, the limiting ring 4 is connected with the outer cylinder 9. And a second recess 11 is provided in the inner wall of the outer sleeve 8. The outer sleeve 8 and the outer cylinder 9 are connected by a screw thread, and the contact surface of the sleeve is an inclined surface. The structure is simple and convenient to install.
The lower joint 2 can also be of a split structure. For example, the lower joint 2 is composed of a first section 25 and a second section 26 fixedly connected to each other. The first recess 21 is formed by providing a first step surface 27 on the first section 25 and a second step surface 28 on the second section 26. This arrangement simplifies installation.
A drilling assembly 200 is also provided. As shown in fig. 5, the drilling assembly 200 includes a drill bit (not shown), an impactor 201 and a torque stabilizing and pressurizing device 100. Wherein the torque stabilizing pressurizing device 100 is arranged between the drill bit and the impactor 201, so that the hammer 202 of the impactor 201 can axially extend into the inner cavity of the upper connector 1 and apply a load to the lower connector 2. It should be noted that, in the present application, the structure of the impactor 201 is limited, and the impactor 201 with the hammer 202 to apply an impact load may be disposed at the upper end of the torque stabilizing and pressurizing device 100.
The operation of the torsion stabilizing pressurizing apparatus 100 will be discussed in detail with reference to fig. 1 to 5.
The torque-stabilizing pressurizing device 100 has an upper joint 1 directly connected with a drill pipe or an impactor 201, and a lower joint 2 connected with a drill bit.
During the drilling process, the torque is transmitted to the outer cylinder 9 and the outer sleeve 8 through the drill rod, then the torque is transmitted to the limiting ring 4 through the outer cylinder 9 and is transmitted to the torque stabilizing piece 5, and is transmitted to the lower joint 2 through the outer sleeve 8, and finally the torque is transmitted to a drill bit connected with the lower joint 2. And the weight on bit is transmitted to the drill bit through the outer cylinder 9, the outer sleeve 8 and the lower joint 2 in turn. In particular, when the hammer 201 is connected, a periodic impact load of the hammer 202 acts on the upper end surface of the lower joint 2 and is transmitted to the bit connected to the lower joint 2. Since the torque is transmitted to the lower joint 2 through the outer cylinder 9 and the torque stabilizer 5, the helically extending slit 52 in the torque stabilizer 5 can absorb and release the torque shock, and the torque shock of the drill connected to the lower joint 2 can be reduced. Because the torque-stabilizing pressurizing device 100 can absorb and release torque impact, transmit bit pressure and axial impact load, the mechanical drilling speed can be improved, and the service life of a drill bit can be prolonged.
In the present application, the directional terms "up" and "down" are used with reference to the operational orientation of the torsion stabilizer 100.
The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily make changes or variations within the technical scope of the present invention disclosed, and such changes or variations should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A torsion stabilizing pressurizing device, comprising:
an upper joint is arranged on the upper end of the connecting rod,
the upper end of the lower joint can extend into the inner cavity of the upper joint, and the upper joint is in clearance type circumferential clamping with the lower joint,
a torque stabilizing assembly disposed between the upper joint and the lower joint,
wherein the upper joint and the lower joint define an axial position through the torque stabilizing assembly.
2. The torsion stabilizing pressurization device according to claim 1, wherein the torsion stabilizing assembly comprises:
a first groove provided on an outer wall of the lower joint,
a limiting ring fixedly arranged on the inner wall of the upper joint, wherein the limiting ring radially extends into the first groove,
the upper end of the torsion stabilizing piece is arranged between the limiting ring and the upper end wall of the first groove, and the torsion stabilizing piece is connected with the lower connector.
3. The torsion stabilizing pressurization device according to claim 2, wherein the torsion stabilizing member has:
a cylindrical body which can be sleeved on the outer wall of the first groove of the lower joint,
the spiral is arranged in the slot on the outer wall of the body.
4. The torque-stabilizing and pressure-applying apparatus according to claim 3, wherein the ratio of the axial dimension of said slots to the axial dimension of the spaces between adjacent said slots is 0.2-0.5.
5. The torsion-stabilizing pressurizing device according to claim 3 or 4, wherein an elastic rubber member is filled in the slit hole.
6. The torsion-stabilizing pressurizing apparatus according to claim 5, wherein the rubber member is configured as a tubular member having a square cross section.
7. Torsion-stabilizing pressurizing device according to any one of claims 2 to 6, wherein an axial notch is provided at the upper end of the torsion-stabilizing member for engaging with a tooth provided on the upper end wall of the first groove of the lower joint.
8. The torsion stabilizing and pressurizing device according to any one of claims 1 to 7, wherein a plurality of flow passages are provided at the upper end of the lower joint for communicating an inner cavity of the lower joint with an annulus between the lower joint and the upper joint, wherein openings of a part of the flow passages are provided on the upper end surface of the lower joint.
9. The torsion stabilizing pressurization device according to any one of claims 1 to 8, wherein a seal is provided between the upper joint and the lower joint of the lower end of the torsion stabilizing assembly.
10. A drilling assembly, comprising:
a drill bit is arranged on the drill bit body,
an impactor disposed above the drill bit, the impactor having a ram,
torque-stabilizing pressurizing device according to any one of claims 1 to 9, arranged between the drill bit and the impactor,
wherein the ram is axially extendable into the inner cavity of the upper connector and applies a load to the lower connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811319717.7A CN111155943B (en) | 2018-11-07 | 2018-11-07 | Stable torsion pressurizing device and drilling tool assembly comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811319717.7A CN111155943B (en) | 2018-11-07 | 2018-11-07 | Stable torsion pressurizing device and drilling tool assembly comprising same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111155943A true CN111155943A (en) | 2020-05-15 |
| CN111155943B CN111155943B (en) | 2021-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811319717.7A Active CN111155943B (en) | 2018-11-07 | 2018-11-07 | Stable torsion pressurizing device and drilling tool assembly comprising same |
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| Country | Link |
|---|---|
| CN (1) | CN111155943B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113236116A (en) * | 2021-06-23 | 2021-08-10 | 重庆科技学院 | Composite impact drilling speed-increasing device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1479631A1 (en) * | 1987-06-29 | 1989-05-15 | Тюменский индустриальный институт им.Ленинского комсомола | Bottom-hole sensor of apparatus for monitoring bit axial load |
| CN1807828A (en) * | 2006-02-17 | 2006-07-26 | 祝兆清 | Flexible pressurizing and damping device for drill bit |
| CN2900761Y (en) * | 2006-02-17 | 2007-05-16 | 祝兆清 | Flexible pressurizing shock-reducing device for drill bit |
| CN107724985A (en) * | 2017-11-13 | 2018-02-23 | 中国石油天然气股份有限公司 | Pressure-stabilizing grinding and milling shaper |
| CN207144845U (en) * | 2017-08-03 | 2018-03-27 | 中石化石油工程技术服务有限公司 | A kind of permanent torque tool torsion moment on the scene caliberating device |
| CN108487856A (en) * | 2018-05-23 | 2018-09-04 | 成都奥尤盖茨科技发展有限公司 | A kind of flexible pressurizing torsion generator |
-
2018
- 2018-11-07 CN CN201811319717.7A patent/CN111155943B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1479631A1 (en) * | 1987-06-29 | 1989-05-15 | Тюменский индустриальный институт им.Ленинского комсомола | Bottom-hole sensor of apparatus for monitoring bit axial load |
| CN1807828A (en) * | 2006-02-17 | 2006-07-26 | 祝兆清 | Flexible pressurizing and damping device for drill bit |
| CN2900761Y (en) * | 2006-02-17 | 2007-05-16 | 祝兆清 | Flexible pressurizing shock-reducing device for drill bit |
| CN207144845U (en) * | 2017-08-03 | 2018-03-27 | 中石化石油工程技术服务有限公司 | A kind of permanent torque tool torsion moment on the scene caliberating device |
| CN107724985A (en) * | 2017-11-13 | 2018-02-23 | 中国石油天然气股份有限公司 | Pressure-stabilizing grinding and milling shaper |
| CN108487856A (en) * | 2018-05-23 | 2018-09-04 | 成都奥尤盖茨科技发展有限公司 | A kind of flexible pressurizing torsion generator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113236116A (en) * | 2021-06-23 | 2021-08-10 | 重庆科技学院 | Composite impact drilling speed-increasing device |
| CN113236116B (en) * | 2021-06-23 | 2023-10-27 | 重庆科技学院 | Composite impact drilling speed increasing device |
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| Publication number | Publication date |
|---|---|
| CN111155943B (en) | 2021-11-23 |
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