CN108487856A - A kind of flexible pressurizing torsion generator - Google Patents
A kind of flexible pressurizing torsion generator Download PDFInfo
- Publication number
- CN108487856A CN108487856A CN201810502457.0A CN201810502457A CN108487856A CN 108487856 A CN108487856 A CN 108487856A CN 201810502457 A CN201810502457 A CN 201810502457A CN 108487856 A CN108487856 A CN 108487856A
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- Prior art keywords
- torsion
- lower contact
- flexible pressurizing
- lug boss
- top connection
- Prior art date
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- 238000007789 sealing Methods 0.000 claims description 9
- 229910000639 Spring steel Inorganic materials 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 41
- 238000000034 method Methods 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 12
- 230000003321 amplification Effects 0.000 abstract description 7
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 7
- 239000011435 rock Substances 0.000 abstract description 6
- 230000035939 shock Effects 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- VEMKTZHHVJILDY-UHFFFAOYSA-N resmethrin Chemical compound CC1(C)C(C=C(C)C)C1C(=O)OCC1=COC(CC=2C=CC=CC=2)=C1 VEMKTZHHVJILDY-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
-
- 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
- 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
- E21B19/089—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 with a spring or an additional weight
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 present invention relates to a kind of flexible pressurizing torsion generators comprising top connection, lower contact, elastic component and torsion transferring member；Lower contact is set in top connection, and elastic component and torsion transferring member are arranged between top connection, lower contact.The flexible pressurizing torsion generator of the present invention is not only axially playing the role of flexible pressurizing, bumper and absorbing shock in drilling process; circumferentially also acting as the amplification for storing torque concentration and releasing energy simultaneously; drill bit is avoided to suppress bouncing of drilling tool; it protects drill bit, improve the effect of bit cutting efficiency; to improving drill bit efficiency of breaking rock; drill bit and drilling tool service life are improved, reducing drilling cost can play a significant role.
Description
Technical field
The present invention relates to oil drilling correlative technology fields, concretely relate to a kind of flexible pressurizing torsion generator.
Background technology
In recent years, as the exploration and development ratio of deep-well and ultradeep well is continuously increased, deep formation formation hardness and plasticity
Increase, conventional rock bit drillability is poor, mechanical separator speed is low, drilling period is long.To improve bit run rate of penetration, PDC is bored
Head is used widely, but the stick slip vibration phenomenon occurred in deep formation PDC drill bit, not only seriously restricts rate of penetration into one
Step is promoted, and also greatly affected its service life.
Torsion generator, also known as torsion impact device.It is existing that it can be used for the stick-slip for solving to occur in PDC drill bit drilling
As improving the drilling efficiency of drilling hard rock, protecting drill bit, improve a kind of speed-raising applied to field of oil drilling of drilling quality
Tool.Earliest torsion impact device is by U.S. Aunar pulling force Ulterra and the torsion impact device for combining the development of Buddha's warrior attendant company.
But, expense complicated by U.S. Aunar pulling force Ulterra and the torsion impact device for combining the development of Buddha's warrior attendant company
Too high, cost performance is low, while only solving the circumferential larger twisting force of offer, is not played when axially encountering impact force slow
Rush cushioning effect.
Invention content
For the deficiency of the prior art, the present invention provides a kind of flexible pressurizing torsion generators.
The technical solution of the flexible pressurizing torsion generator of the present invention is as follows：
A kind of flexible pressurizing torsion generator comprising：
Top connection, the top connection include connector portions and central tube portion；On the outer wall of the central tube portion radially to
It is formed with the first lug boss outside, and first axis connecting hole is offered on first lug boss；
Lower contact is radially formed with the second protrusion in the lower contact on the outer wall of described connector portions one end
Portion, and the second axial connecting hole is offered on second lug boss；The central tube of the lower contact and the top connection
Portion is tightly connected so that torsion generation cavity is formed between first lug boss and second lug boss；
Elastic component, the elastic component are set in the torsion generation cavity；
The lower end of torsion transferring member, the torsion transferring member passes through the first axis connecting hole and the torsion generation cavity
It is connected with the described second axial connecting hole.
When the flexible pressurizing torsion generator work of the present invention, top connection can pass to down as desired by elastic component
First reasonable bit pressure is connect, in drilling process, the process that bit pressure frequently changes because of stratum heterogeneity can pass through elasticity
The size of part deformation obtains flexible adjustment, while when on drill bit by larger axial impact force, is inhaled to it by elastic component
It receives energy and axial protection drill bit can be played the role of and prevent top drilling tool damage；In addition, what drilling tool rotation in top was transmitted
Torque can be transmitted by connecting top connection and the two-part torsion transferring member of lower contact, and torsion transferring member passes through twisted shape
Become the drill bit that storage energy supplement works to lower part, can occur suppressing bouncing of drilling tool situation to avoid hard formation is encountered in drilling process in this way
When damage drill bit, while playing torsion in the circumferential and transmitting and storage amplification, drill bit can be damaged avoid suppressing bouncing of drilling tool
Improve the stock-removing efficiency of drill bit again simultaneously.
According to a preferred embodiment, the lower contact is sheathed in the central tube portion of the top connection, and
It is provided with first seal between the inner wall of the lower contact and the outer wall of the central tube portion.
By being provided between the inner wall of the lower contact and the outer wall of the central tube portion in first seal guarantee
For the central tube portion of connector with lower contact when relative motion axially occurs, high-pressure fluid will not be in crossfire to torsion generation cavity.
Further include anti-lost clip according to a preferred embodiment；The anti-lost hoop sleeve is set to first protrusion
In portion and second lug boss.
It is more than torsion when circumferential torsion is excessive by the way that anti-lost clip is arranged on the first lug boss and second lug boss
When transferring member strength degree causes torsion transferring member to be broken, anti-lost clip can ensure the biography of lower part drilling tool pulling force in the axial direction
It passs, to make it can be with proper motion.
Further include housing according to a preferred embodiment；The housing be sheathed on the anti-lost clip and it is described under
Outside connector, and one end is connected with the connector portions of the top connection；Also, in the inner wall of the housing and the lower contact
Second seal is provided between outer wall.
By being provided with second seal between the inner wall of housing and the outer wall of the lower contact, it is ensured that Annular cutting
Body will not be in entering tool；Second seal can coordinate with first seal simultaneously, and U-shaped sealing is formed in torsion generator
Structure, to strengthen sealing effect of the central tube portion with lower contact of top connection.
According to a preferred embodiment, the second seal is O-ring seal.
According to a preferred embodiment, the elastic component is spring.
According to a preferred embodiment, the torsion transferring member is the torsion bar made of spring steel, and both ends are set
It is equipped with screw thread；Described second axial connecting hole is threaded hole.
According to a preferred embodiment, the first seal is the sealing ring of rectangular cross-section.
Further include locking nut according to a preferred embodiment；The locking nut and the torsion transferring member
Threaded upper ends are connected and are screwed, with to the elastic component precharge pressure.
Locking nut is set by the one end being located in torsion transferring member on the first lug boss and screws locking nut, is given
The certain initial pressure of elastic component pre-add in torsion generation cavity, can play the role of preventing tool nut in vibrations from moving back button.
According to a preferred embodiment, two sets of elastic components and torsion transferring member are included at least；And it is circumferentially equal
Even is set in the top connection and the lower contact.
Compared with prior art, flexible pressurizing torsion generator of the invention has the advantages that：
When the flexible pressurizing torsion generator work of the present invention, top connection can pass to down as desired by elastic component
First reasonable bit pressure is connect, in drilling process, the process that bit pressure frequently changes because of stratum heterogeneity can pass through elasticity
The size of part deformation obtains flexible adjustment, while when on drill bit by larger axial impact force, is inhaled to it by elastic component
It receives energy and axial protection drill bit can be played the role of and prevent top drilling tool damage；In addition, what drilling tool rotation in top was transmitted
Torque can be transmitted by connecting top connection and the two-part torsion transferring member of lower contact, and torsion transferring member passes through twisted shape
Become the drill bit that storage energy supplement works to lower part, can occur suppressing bouncing of drilling tool situation to avoid hard formation is encountered in drilling process in this way
When damage drill bit, while playing torsion in the circumferential and transmitting and storage amplification, drill bit can be damaged avoid suppressing bouncing of drilling tool
Improve the stock-removing efficiency of drill bit again simultaneously.
In conclusion the flexible pressurizing torsion generator of the present invention is not only axially playing flexible add in drilling process
The effect of pressure, bumper and absorbing shock, while the amplification to release energy is concentrated circumferentially also acting as storage torque, avoid drill bit from suppressing jump
It bores, protection drill bit improves the effect of bit cutting efficiency, to improving drill bit efficiency of breaking rock, improves drill bit and drilling tool service life, drop
Low drilling cost can play a significant role.
Description of the drawings
Fig. 1 is the structural schematic diagram of flexible pressurizing torsion generator embodiment of the present invention；
Fig. 2 is the structural schematic diagram of top connection in flexible pressurizing torsion generator embodiment of the present invention；
Fig. 3 is the structural schematic diagram of lower contact in flexible pressurizing torsion generator embodiment of the present invention.
Reference numerals list
100- top connections, 110- connector portions, 120- central tube portions, the first lug bosses of 130-, 140- first axis connecting holes,
200- lower contacts, the second lug bosses of 210-, the axial connecting holes of 220- second, 310- torsion generation cavities, 400- elastic components, 500- are turned round
Power transmission part, 610- first seals, 620- second seals, the anti-lost clips of 700-, 800- housings, 900- locking nuts.
Specific implementation mode
In the description of this specification, it is to be understood that term " middle part ", "upper", "lower", "front", "rear", " left side ",
The orientation or positional relationship of the instructions such as " right side ", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, merely to just
It is described in simplified, does not indicate or imply the indicated device or element must have a particular orientation, with specific orientation
Construction and operation, therefore be not considered as limiting the invention.In addition, in the description of specific implementation mode, " first ",
Vocabulary such as " second " are only used for distinguishing the purpose of description, are not understood to indicate or imply relative importance, can not understand
To indicate or implying sequence.
The flexible pressurizing torsion generator of the present invention is described in detail below in conjunction with the accompanying drawings.
Fig. 1 to Fig. 3 shows a kind of preferred embodiment of flexible pressurizing torsion generator of the present invention.
As shown in Figures 1 to 3, a kind of flexible pressurizing torsion generator comprising top connection 100, lower contact 200, elastic component
400 and torsion transferring member 500.
The flexible pressurizing torsion generator of the present invention may be implemented the circumferential torque concentration that stores using torsion transferring member 500 and release
The amplification effect put；Axial flexible pressurizing, damping effect may be implemented using elastic component 400；Both drill bit and drilling tool are protected,
Play the role of improving efficiency of breaking rock again.
Specifically, the flexible pressurizing torsion generator of the present invention is by the above-mentioned technique effect of following technical proposals reality
's：
Top connection 100 includes connector portions 110 and central tube portion 120.The radially shape on the outer wall of central tube portion 120
At there is the first lug boss 130, and first axis connecting hole 140 is offered on the first lug boss 130.As shown in Figure 2.It is preferred that
, first axis connecting hole 140 can be a through-hole.
The second lug boss 210 is radially formed on the outer wall of 110 one end of connector portions in lower contact 200, and
And the second axial connecting hole 220 is offered on the second lug boss 210, as shown in Figure 3.Preferably, the second axial connecting hole 220
It can be threaded hole.
Lower contact 200 and the central tube portion 120 of top connection 100 are tightly connected so that convex in the first lug boss 130 and second
It rises and forms torsion generation cavity 310 between portion 210.
Specifically, as shown in Figure 1, lower contact 200 is sheathed in the central tube portion 120 of top connection 100.And in lower contact
It is provided with first seal 610 between 200 inner wall and the outer wall of central tube portion 120.
By being provided between the inner wall of lower contact 200 and the outer wall of central tube portion 120 in the guarantee of first seal 610
The central tube portion 120 of connector 100 with lower contact 200 axially occur relative motion when, high-pressure fluid will not crossfire to torsion hair
In raw chamber 310.
Preferably, first seal 610 can be the sealing ring of rectangular cross-section so that the inner wall of lower contact 200 is in
Be formed as rectangular seal between the outer wall of heart pipe portion 120.
Elastic component 400 is set in the torsion generation cavity 310 formed between the first lug boss 130 and the second lug boss 210.
Specifically, one end of elastic component 400 connects with the first lug boss 130, the other end connects with the second lug boss 210 so that upper
Under the action of connector 100 or the axial force of lower contact 200, elastic component 400 can deform.
When work, top connection 100 can pass to one reasonable bit pressure of lower contact as desired by elastic component 400,
In drilling process, the process that bit pressure frequently changes because of stratum heterogeneity can be obtained by the size of 400 deformation of elastic component
Flexibility adjustment；It, can be with by elastic component 400 absorbs it energy meanwhile when on drill bit by larger axial impact force
Play the role of axial protection drill bit and prevents top drilling tool damage.
Preferably, elastic component 400 can be spring.Its quantity is at least one, preferably 2,3 or 4.
Preferably, torsion transferring member 500 is the torsion bar made of spring steel, is provided at both ends with screw thread.Its quantity is extremely
It is one less, preferably 2,3 or 4.
In the mounted state, the lower end of torsion transferring member 500 passes through first axis connecting hole 140 and torsion generation cavity 310
It is threadedly coupled with the second axial connecting hole 220.
When work, the torque that drilling tool rotation in top is transmitted can be two-part by connecting top connection 100 and lower contact 200
Torsion transferring member 500 is transmitted, and torsion transferring member 500 stores the drill bit that energy supplement works to lower part by twist distortion,
Drill bit can be damaged to avoid encountering hard formation in drilling process and the when of suppressing bouncing of drilling tool situation occur in this way, while play torsion in the circumferential
Amplification is transmitted and stores, it can be in the stock-removing efficiency for avoiding the while of suppressing bouncing of drilling tool damage drill bit from improving drill bit again.
Further, it is also associated with locking nut 900 in the upper end of torsion transferring member 500.Specifically, locking nut 900
It is set to torsion transferring member 500 to be located in the torsion transferring member 500 of the first above position in lug boss upper surface, be transmitted by torsion
The screw thread of 500 upper end of part screws locking nut, gives the elastic component pre-add in torsion generation cavity certain initial pressure, can play anti-
Only tool nut in vibrations moves back button effect.
Preferably, the quantity of elastic component 400, torsion transferring member 500 and locking nut 900 is at least two sets.It is circumferentially
Uniformly it is set in top connection 100 and lower contact 200.By the way that at least two sets of elastic components 400,500 and of torsion transferring member is arranged
Locking nut 900 can make flexible pressurizing torsion generator stress of the present invention evenly.
Further, flexible pressurizing torsion generator of the present invention further includes anti-lost clip 700.
As shown in Figure 1, anti-lost clip 700 is sheathed on the first lug boss 130 and the second lug boss 210.By first
Anti-lost clip 700 is set on lug boss 130 and the second lug boss 210, is more than 500 intensity of torsion transferring member when circumferential torsion is excessive
When the limit causes torsion transferring member 500 to be broken, anti-lost clip 700 can ensure the transmission of lower part drilling tool pulling force in the axial direction,
To make it can be with proper motion.
Further, flexible pressurizing torsion generator of the present invention further includes housing 800.
As shown in Figure 1, housing 800 is sheathed on outside anti-lost clip 700 and lower contact 200, and one end and top connection 100
Connector portions 110 are connected.Also, second seal 620 is provided between the inner wall of housing 800 and the outer wall of lower contact 200.
By being provided with second seal 620 between the inner wall of housing 800 and the outer wall of lower contact 200, it is ensured that
Annular fluid will not be in entering tool；Second seal 620 can coordinate with first seal 610 simultaneously, in torsion generator
It is interior to form U-shaped sealing structure, to strengthen sealing effect of the central tube portion 120 with lower contact 200 of top connection 100.
Preferably, second seal 620 can be O-ring seal so that the inner wall of housing 800 is outer with lower contact 200
O-shaped sealing is formed between wall.
The flexible pressurizing torsion generator of the present invention may be implemented to apply to drill bit in drilling process using elastic component 400
Add a flexible bit pressure, while can be with buffer protection drill bit and drilling tool when drill bit is by axial impact force；In addition, utilizing torsion
The energy storage of transferring member 500 acts on, and when drill bit encounters soft or hard staggeredly stratum generation bit bouncing, drill bit can avoided to suppress the same of bouncing of drilling tool
When, the torsion for discharging bigger realizes the needs of the circumferential normal cutting hard formation of drill bit.
In conclusion the flexible pressurizing torsion generator of the present invention is not only axially playing flexible add in drilling process
The effect of pressure, bumper and absorbing shock, while the amplification to release energy is concentrated circumferentially also acting as storage torque, avoid drill bit from suppressing jump
It bores, protection drill bit improves the effect of bit cutting efficiency, to improving drill bit efficiency of breaking rock, improves drill bit and drilling tool service life, drop
Low drilling cost can play a significant role.
It should be noted that all features disclosed in this specification or disclosed all methods or in the process the step of,
Other than mutually exclusive feature and/or step, it can combine in any way.
In addition, above-mentioned specific embodiment is exemplary, those skilled in the art can opening in the disclosure of invention
It gives and finds out various solutions, and these solutions also belong to disclosure of the invention range and fall into the protection of the present invention
Within the scope of.It will be understood by those skilled in the art that description of the invention and its attached drawing be it is illustrative and not constitute to power
The limitation that profit requires.Protection scope of the present invention is limited by claim and its equivalent.
Claims (10)
1. a kind of flexible pressurizing torsion generator, which is characterized in that it includes：
Top connection (100), the top connection (100) include connector portions (110) and central tube portion (120)；In the central tube portion
(120) it is radially formed with the first lug boss (130) on outer wall, and is opened up on first lug boss (130)
There is first axis connecting hole (140)；
Lower contact (200), the radially shape on outer wall of the lower contact (200) close to the connector portions (110) one end
At there is the second lug boss (210), and the second axial connecting hole (220) is offered on second lug boss (210)；It is described
Lower contact (200) and the central tube portion (120) of the top connection (100) are tightly connected so that in first lug boss (130)
Torsion generation cavity (310) is formed between second lug boss (210)；
Elastic component (400), the elastic component (400) are set in the torsion generation cavity (310)；
The lower end of torsion transferring member (500), the torsion transferring member (500) passes through the first axis connecting hole (140) and institute
Torsion generation cavity (310) is stated with the described second axial connecting hole (220) to be connected.
2. flexible pressurizing torsion generator according to claim 1, which is characterized in that the lower contact (200) is sheathed on
In the central tube portion (120) of the top connection (100), and in the inner wall of the lower contact (200) and the central tube portion
(120) first seal (610) is provided between outer wall.
3. flexible pressurizing torsion generator according to claim 2, which is characterized in that further include anti-lost clip (700)；
The anti-lost clip (700) is sheathed on first lug boss (130) and second lug boss (210).
4. flexible pressurizing torsion generator according to claim 3, which is characterized in that further include housing (800)；
The housing (800) is sheathed on the anti-lost clip (700) and the lower contact (200) outside, and one end with it is described on
The connector portions (110) of connector (100) are connected；
Also, it is provided with second seal between the inner wall of the housing (800) and the outer wall of the lower contact (200)
(620)。
5. flexible pressurizing torsion generator according to claim 4, which is characterized in that the second seal (620) is O
Type sealing ring.
6. the flexible pressurizing torsion generator according to one of claim 1 to 5, which is characterized in that the elastic component (400)
For spring.
7. the flexible pressurizing torsion generator according to one of claim 1 to 5, which is characterized in that the torsion transferring member
(500) it is the torsion bar made of spring steel, is provided at both ends with screw thread；Described second axial connecting hole (220) is threaded hole.
8. the flexible pressurizing torsion generator according to one of claim 2 to 5, which is characterized in that the first seal
(610) it is the sealing ring of rectangular cross-section.
9. the flexible pressurizing torsion generator according to one of claim 1 to 5, which is characterized in that further include locking nut
(900)；
The locking nut (900) connect and screws with the threaded upper ends of the torsion transferring member (500), with to the elastic component
(400) precharge pressure.
10. the flexible pressurizing torsion generator according to one of claim 1 to 5, which is characterized in that include at least two sets of bullets
Property part (400) and torsion transferring member (500)；And its be circumferentially uniformly set to the top connection (100) and it is described under connect
On head (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810502457.0A CN108487856A (en) | 2018-05-23 | 2018-05-23 | A kind of flexible pressurizing torsion generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810502457.0A CN108487856A (en) | 2018-05-23 | 2018-05-23 | A kind of flexible pressurizing torsion generator |
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| Publication Number | Publication Date |
|---|---|
| CN108487856A true CN108487856A (en) | 2018-09-04 |
Family
ID=63350951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810502457.0A Pending CN108487856A (en) | 2018-05-23 | 2018-05-23 | A kind of flexible pressurizing torsion generator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230469A (en) * | 2019-07-04 | 2019-09-13 | 西安石油大学 | A kind of horizontal well drilling bit pressure compensation device |
| CN111155943A (en) * | 2018-11-07 | 2020-05-15 | 中国石油化工股份有限公司 | Stable torsion pressurizing device and drilling tool assembly comprising same |
| CN111622673A (en) * | 2019-02-28 | 2020-09-04 | 中国石油化工股份有限公司 | Well drilling assisting tool |
| CN111764841A (en) * | 2019-04-02 | 2020-10-13 | 陈晓新 | Novel horizontal torsional elastic force buffering cutting rock breaking drilling tool |
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| CN111155943A (en) * | 2018-11-07 | 2020-05-15 | 中国石油化工股份有限公司 | Stable torsion pressurizing device and drilling tool assembly comprising same |
| CN111155943B (en) * | 2018-11-07 | 2021-11-23 | 中国石油化工股份有限公司 | Stable torsion pressurizing device and drilling tool assembly comprising same |
| CN111622673A (en) * | 2019-02-28 | 2020-09-04 | 中国石油化工股份有限公司 | Well drilling assisting tool |
| CN111764841A (en) * | 2019-04-02 | 2020-10-13 | 陈晓新 | Novel horizontal torsional elastic force buffering cutting rock breaking drilling tool |
| CN110230469A (en) * | 2019-07-04 | 2019-09-13 | 西安石油大学 | A kind of horizontal well drilling bit pressure compensation device |
| CN110230469B (en) * | 2019-07-04 | 2024-05-28 | 西安石油大学 | Drilling pressure compensation device for horizontal well drilling |
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