CN112814570B - Self-driven rotary casing running tool - Google Patents
Self-driven rotary casing running tool Download PDFInfo
- Publication number
- CN112814570B CN112814570B CN202110269132.4A CN202110269132A CN112814570B CN 112814570 B CN112814570 B CN 112814570B CN 202110269132 A CN202110269132 A CN 202110269132A CN 112814570 B CN112814570 B CN 112814570B
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- Prior art keywords
- sealing
- nut
- sleeve
- boss
- self
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Classifications
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- 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
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
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- 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
- 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
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
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- 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
- E21B29/00—Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
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- 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
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
- E21B7/201—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes with helical conveying means
Abstract
The invention provides a self-driven rotary casing running tool which comprises an upper joint, wherein the upper joint is connected with the upper end of a rod part of a nut, the spiral end of the nut is spirally meshed with a screw rod, a sealing sleeve is arranged on the outer surface of the rod part of the nut, an outer sleeve is sleeved on the outer surface of the lower end of the upper joint, an elastic centralizer is assembled on the outer surface of the outer sleeve, a spring is placed in an inner cavity formed by the upper joint, the outer sleeve and the sealing sleeve, the lower end of the screw rod is provided with a rolling body in a matched mode, and external threads at the lower end of the screw rod are connected with internal threads at the upper end of a drilling and grinding guide shoe in a matched mode. The hydraulic pipe column has the characteristics of no hydraulic element, self-driving of the pipe column, large drilling and grinding stuck-freeing moment, repeatable action and self-righting guide.
Description
Technical Field
The invention relates to the technical field of running of deep well ultra-deep wells, directional extended reach wells and well casings with complex structures, in particular to a self-driven rotary casing running tool.
Background
The well bores of deep wells, ultra-deep wells, directional extended reach wells and wells with complex structures have sand bridges, necking down and irregular deformation, and the phenomenon of pipe column running blockage often occurs, so that the running of the well drilling and completion pipe column is difficult. In the prior art for solving the problem of difficult casing running, the auxiliary casing running device or tool used includes two types. The device is provided with an impeller or a turbine, the lower end of the impeller or the turbine is connected with a drill bit, the device is arranged at the bottom of a sleeve, the impeller or the turbine is driven to rotate by utilizing water power, so that the connected drill bit is driven to rotate to achieve the purpose of drifting, and high-pressure liquid is pumped into a well to realize the rotary drifting of the drill bit when the device works. The other type is an auxiliary tool which can enable the lower casing string to rotate freely, the tool is connected to the middle section of the casing, when the casing is put into a block, the axial mosaic structure of the tool is separated, and the casing string connected with the lower part of the tool can rotate freely towards the direction with small resistance so as to pass through the block section. Although the device or the tool plays a certain auxiliary role in casing running, the device or the tool has the problems of complex operation process, low reliability and the like, and the device or the tool cannot play a role in efficiently assisting the casing running.
Disclosure of Invention
In order to overcome the above-mentioned deficiencies of the prior art, it is an object of the present invention to provide a self-driving rotary casing running tool having no hydraulic components, self-driving of the pipe string, large drill-wear trip torque, repeatable action and self-righting guide.
In order to achieve the purpose, the invention adopts the technical scheme that:
a self-driven rotary casing running-in tool comprises an upper connector 1, wherein the upper connector 1 is connected with the upper end of a rod part of a nut 4, a screw rod 9 is engaged in the upper end of the nut 4 and the end face of the upper connector 1, a sealing sleeve 8 is arranged on the outer surface of the rod part of the nut 4, an outer sleeve 17 is sleeved on the outer surface of the lower end of the upper connector 1, an elastic centralizer 6 is assembled on the outer surface of the outer sleeve 17, a spring 3 is placed in an inner cavity formed by the upper connector 1, the outer sleeve 17 and the sealing sleeve 8, a rolling body 14 is arranged at the lower end of the screw rod 9 in a matched mode, and an external thread at the lower end of the screw rod 9 is connected with an internal thread at the upper end of a drilling and grinding guide shoe 13 in a matched mode.
An inner cavity force transmission disc is arranged inside the upper joint 1, outer threads at the lower end of the inner cavity force transmission disc are connected with inner threads at the upper end of the rod part of the nut 4, a sealing ring 2 is assembled between the outer circular surface of the lower end of the force transmission disc and the inner circular surface at the upper end of the rod part of the nut 4, and overflowing channels are arranged on the force transmission disc of the upper joint 1 and the disc surface at the lower end of the sealing sleeve 8.
The circular arc-shaped cross section overflowing channel is communicated with the large-diameter circumference of the end face of the inner cavity of the lower side of the upper joint 1, 6 pin holes are formed in the small-diameter circumference, pin holes are formed in the end face, in threaded connection with the upper joint 1, of the nut 4, the pin holes correspond to the pin holes of the upper joint 1 one to one, and the pin holes are used for assembling anti-rotation and anti-rotation pin rods 18.
The lower end of the sealing sleeve 8 is connected with a sealing end cover 16 through a screw 12, and a sealing ring 7 is assembled between the inner circular surface of the upper end of the sealing sleeve 8 and the outer circular surface of the rod part of the nut 4; the inboard boss that is provided with of upper end of seal cover 8, the boss plays limiting displacement to the nut head of nut 4 lower extreme, and boss internal surface axial is equipped with two seal grooves and is used for assembling sealing washer 7, and the big footpath boss surface of seal cover 8 hypomere is equipped with the screw hole and is used for assembly screw 10 to be connected with overcoat 17, is provided with the runner of circulation drilling fluid on the outer circumference of big footpath boss, and big footpath boss inside is equipped with spacing chamber and is used for laying spring 3.
The two ends of the spring 3 are respectively positioned in the lower end face of the boss of the upper joint 1 and the limiting cavity of the sealing sleeve 8, the diameter of the spring is slightly smaller than the inner diameter of the limiting cavity, when the upper joint 1 is far away from the outer sleeve 17, namely the outer boss of the upper joint 1 is contacted with the inner boss of the outer sleeve 17, the spring 3 is in a slight compression state, and the spring 3 is gradually compressed along with downward (upward) movement of the upper joint 1.
Be equipped with sealing washer 5 between interior disc in overcoat 17 upper end and the outer disc of 1 lower extreme of top connection, the terminal internal surface of upside of overcoat 17 is provided with the boss, and top connection 1 lower extreme surface boss plays limiting displacement to overcoat 17, and the internal surface of overcoat 17 boss is provided with the seal groove that is used for assembling the sealing washer, and the surface is equipped with elasticity centralizer 6.
The rolling bodies 14 are placed in rolling body seats 15, and the rolling body seats 15 are assembled in grooves at the lower end of the screw rod 9 and are in contact with the inner circular surface of a sealing end cover 16.
The sealing end cover 16 is in a circular ring shape, four threaded holes are uniformly distributed in the circumferential direction on the outer surface of the sealing end cover, the threaded holes are connected with the sealing sleeve 8 through connecting screws 12, and the blocking table 9-1 at the lower end of the screw 9 and the inner surface of the cavity at the upper end of the drilling and grinding guide shoe 13 are tightly pressed on the sealing end cover 16 to limit axial movement.
The rolling body seat 15 is composed of two parts which are symmetrical up and down, a cavity of the rolling body seat 15 is used for placing the spherical rolling body 14, the space of the cavity is slightly larger than the volume of the rolling body 14, the rolling body 14 can flexibly rotate in the cavity of the rolling body seat 15, meanwhile, the opening of the cavity of the rolling body seat 15 is smaller than the diameter of the rolling body 14, the rolling body 14 is prevented from falling off in the rolling body seat 15, the rolling body 14 is arranged in the rolling body seat 15 and then assembled in the wedge-shaped groove 9-2 of the screw rod 9, and the rolling body seat 15 is in tight fit with the wedge-shaped groove 9-2.
A sealing ring 11 is assembled between the inner circular surface of the upper end of the drilling and grinding guide shoe 13 and the outer circular surface of the lower end of the sealing sleeve 8, the drilling and grinding guide shoe 13 is in threaded connection with the screw rod 9, the upper end portion of the drilling and grinding guide shoe is sleeved on the outer surface of the sealing sleeve 8, and the inner surface of the drilling and grinding guide shoe 13, sleeved on the outer surface portion of the sealing sleeve 8, is provided with a sealing groove for assembling a sealing ring.
The invention has the beneficial effects that:
the self-driving type screw mechanism is adopted, so that the aim of guiding the casing to pass through by a drilling and grinding unfreezing drifting guide well of the drilling and grinding guide shoe can be fulfilled by means of the hanging weight thrust of the pipe column without the aid of external force such as water power and the like when the casing is stopped in the running process. The tool can directly and repeatedly work in the casing running process, and the operation process is economical and efficient.
The outer diameter of the invention is equal to the outer diameter of the casing, the problem that the running operation of the casing is influenced because of overlarge outer diameter of the tool can not be generated, the power source of the invention is not driven by water power and the like, but the invention can enter a working state by means of a mechanical self-driving mode when the casing meets a resistance, and the invention can automatically recover to an initial position by means of the resilience force of an internal spring after smoothly passing through the resistance meeting stage so as to ensure that the casing can continuously work when meeting the resistance again, and the working mode of the invention is simple, convenient and easy to operate, and the tool has stable performance, safety and reliability.
Drawings
FIG. 1 is a front view of a self-driving rotary casing running tool.
Fig. 2 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of fig. 1.
Fig. 3 is a schematic structural view of the sealing sleeve.
Fig. 4 is a sectional view B-B of fig. 3.
Fig. 5 is a schematic view of the nut.
Fig. 6 is a cross-sectional view C-C of fig. 3.
Fig. 7 is a schematic view of the structure of the screw.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1-7, a self-driven rotary casing running tool comprises an upper joint 1, a nut 4, an elastic centralizer 6, a seal sleeve 8, a screw rod 9, a drilling and grinding guide shoe 13, an outer sleeve 17 and the like, and is characterized in that the upper joint 1 is connected with an internal thread at the upper end of a rod part of the nut 4 through an external thread at the lower end of a force transmission disc in an inner cavity of the upper joint, a seal ring 2 is arranged between the outer circular surface at the lower end of the force transmission disc and the inner circular surface at the upper end of the rod part of the nut 4, and the spiral end of the nut 4 is in spiral engagement with the screw rod 9; the sealing sleeve 8 is sleeved on the outer surface of the rod part of the nut 4, the lower end of the sealing sleeve is connected with the sealing end cover 16 through a screw 12, and a sealing ring 7 is assembled between the inner circular surface of the upper end of the sealing sleeve 8 and the outer circular surface of the rod part of the nut 4; the outer sleeve 17 is sleeved on the outer surface of the lower end of the upper joint 1 and is connected with the sealing sleeve 8 through a screw 10, the outer surface of the outer sleeve is provided with the elastic centralizer 6, and a sealing ring 5 is arranged between the inner circular surface of the upper end of the outer sleeve 17 and the outer circular surface of the lower end of the upper joint 1; the spring 3 is arranged in an inner cavity formed by the upper joint 1, the outer sleeve 17 and the sealing sleeve 8; the rolling bodies 14 are arranged in a rolling body seat 15, are assembled in a groove at the lower end of the screw rod 9 together and are in contact with the inner circular surface of the sealing end cover 16; the internal thread at the upper end of the drilling and grinding guide shoe 13 is matched and connected with the external thread at the lower end of the screw rod 9, and a sealing ring 11 is assembled between the inner circular surface at the upper end of the drilling and grinding guide shoe 13 and the outer circular surface at the lower end of the sealing sleeve 8; the upper joint 1 force transmission disc of the tool and the disc surface at the lower end of the sealing sleeve 8 are both provided with an overflowing channel.
The lower end of the sealing sleeve 8 is connected with a sealing end cover 16 through a screw 12, and a sealing ring 7 is assembled between the inner circular surface of the upper end of the sealing sleeve 8 and the outer circular surface of the rod part of the nut 4.
The upper joint 1 is connected with a sleeve through an upper end sleeve thread, an inner cavity force transmission disc lower end external thread is connected with a rod part upper end internal thread of the nut 4, the sealing ring 2 is assembled in a stud thread upper side sealing groove, a circular arc-shaped cross section flow passage is communicated on the large-diameter circumference of the end surface of an inner cavity at the lower side of the upper joint 1, and 6 pin holes are arranged on the small-diameter circumference, pin holes are designed on the end surfaces of the nut 4 and the upper joint 1 in threaded connection, are in one-to-one correspondence with the pin holes of the upper joint 1, and are used for preventing the assembly from rotating and rotating the pin rod 18.
The screw 9 is connected with a drilling and grinding guide shoe 13 through a lower end thread, the drilling and grinding guide shoe is driven to rotate through the rotation of the screw 9, the functions of drifting and guiding a casing pipe to be put into a well are achieved, wedge-shaped grooves 9-2 which are distributed circumferentially are designed on the surface of the portion, between a blocking platform 9-1 of the screw 9 and the lower end thread, of the screw 9 and used for assembling a rolling body seat 15 and rolling bodies 14 placed in the rolling body seat, the rolling bodies 14 are in contact with the inner surface of a sealing end cover 16, contact generated by relative movement of the screw 9 and the sealing end cover 16 is converted into rolling friction, friction resistance is reduced, parts are protected, and meanwhile contact between the rolling bodies 14 and the sealing end cover 16 can also play a good supporting role in a sealing sleeve 8 and an outer sleeve 17.
The sealing ring 11 is assembled between the inner circular surface of the upper end of the drilling and grinding guide shoe 13 and the outer circular surface of the lower end of the sealing sleeve 8, the drilling and grinding guide shoe 13 is in threaded connection with the screw rod 9, the upper end part of the drilling and grinding guide shoe is sleeved on the outer surface of the sealing sleeve 8, a sealing groove is formed in the inner surface of the part, sleeved on the outer surface of the sealing sleeve 8, of the drilling and grinding guide shoe 13 and used for assembling the sealing ring, the sealing effect is achieved on the inner space of the sealing sleeve 8, and liquid is prevented from entering the sealing sleeve 8 to influence the normal work of the screw rod 9, the nut 4 and other transmission mechanisms.
The working principle of the invention is as follows:
when the guide shoe is used, the upper connector 1 is connected to the lower end of the sleeve through the sleeve thread, when the sleeve moves downwards (downwards) to push the upper connector 1, the upper connector 1 moves downwards together with the nut 4, the screw 9 meshed with the nut 4 rotates under the axial movement of the nut 4, power is transmitted to the drilling and grinding guide shoe 13 in threaded connection with the screw, and then the functions of rotary grinding of the drilling and grinding guide shoe 13 and guiding the sleeve to be put into the guide shoe are achieved. When the sleeve smoothly passes through a road section with resistance, the upper joint 1 and the nut 4 are restored to the original positions under the action of the resilience force of the spring 3, and when the spring cannot be restored when the sleeve is subjected to resistance, the spring nut can be actively restored by adopting a pipe column lifting mode, so that the invention can be continuously used for guiding and promoting the running-in operation of the sleeve when the sleeve is subjected to resistance. Drilling fluid can circulate through a hole on the force transmission disc in the upper connector 1 and a flow channel on the sealing sleeve 8, and when the drilling fluid circulates in the tool, the sealing sleeve 8, the sealing ring 7 and the sealing ring 11 can play a good sealing role on the screw rod 9, so that the drilling fluid and other impurities are prevented from influencing the work of the screw mechanism with lubrication. The elastic centralizer 6 arranged on the outer surface of the outer sleeve 17 enhances the supporting capacity of the outer sleeve 17 and the upper joint 1 in a well with a complex structure, and has a certain promotion effect on improving the running efficiency of the casing.
Claims (9)
1. The self-driven rotary casing running tool is characterized by comprising an upper connector (1), wherein the upper connector (1) is connected with the upper end of a rod part of a nut (4), a screw rod (9) is meshed with the upper end of the nut (4) and the end face of the upper connector (1) in an inner engaged manner, a sealing sleeve (8) is arranged on the outer surface of the rod part of the nut (4), an outer sleeve (17) is sleeved on the outer surface of the lower end of the upper connector (1), an elastic centralizer (6) is assembled on the outer surface of the outer sleeve (17), a spring (3) is placed in an inner cavity formed by the upper connector (1), the outer sleeve (17) and the sealing sleeve (8), a rolling body (14) is arranged at the lower end of the screw rod (9) in a matched manner, and the lower end of the screw rod (9) is connected with an internal thread of a drilling and grinding guide shoe (13) in a matched manner;
nut (4) are connected with top connection (1) through the upside screw thread, and downside nut head surface is provided with three and prevents changeing direction bead, is provided with three groove on seal cover (8), prevents changeing direction bead and groove cooperation and plays the motion guide effect to it, and big helical pitch threaded connection is gone up with screw rod (9) to nut head internal surface, converts the linear motion of nut (4) into the rotary motion of screw rod (9).
2. The self-driven rotary casing running tool as claimed in claim 1, wherein an inner cavity force transmission disc is arranged inside the upper joint (1), external threads at the lower end of the inner cavity force transmission disc are connected with internal threads at the upper end of the rod part of the nut (4), a first sealing ring (2) is arranged between the outer circular surface at the lower end of the force transmission disc and the inner circular surface at the upper end of the rod part of the nut (4), and flow passage are arranged on the force transmission disc of the upper joint (1) and the disc surface at the lower end of the sealing sleeve (8);
the circular arc-shaped cross section overflowing channel is communicated with the large-diameter circumference of the end face of the inner cavity of the lower side of the upper joint (1), 6 pin holes are formed in the small-diameter circumference, the pin holes are arranged in the end face, in threaded connection with the upper joint (1), of the nut (4) and are in one-to-one correspondence with the pin holes of the upper joint (1), and the pin holes are used for being assembled with anti-rotation pin rods (18).
3. A self-driven rotary casing running tool according to claim 1, wherein the lower end of the sealing sleeve (8) is connected with the sealing end cover (16) through a screw (12), and a third sealing ring (7) is arranged between the inner circular surface of the upper end of the sealing sleeve (8) and the outer circular surface of the rod part of the nut (4); the inner side of the upper end head of the sealing sleeve (8) is provided with a boss, the boss plays a limiting role in a nut head at the lower end of the nut (4), two sealing grooves are axially formed in the inner surface of the boss and used for assembling a sealing ring III (7), the outer surface of the boss with the large diameter of the lower section of the sealing sleeve (8) is provided with a threaded hole for connecting an assembling screw (10) with an outer sleeve (17), a flow channel for circulating drilling fluid is formed in the outer circumference of the boss with the large diameter, and a limiting cavity is formed in the boss with the large diameter and used for placing a spring (3).
4. A self-driving rotary casing running tool according to claim 1, wherein the two ends of the spring (3) are respectively located at the lower end face of the boss of the upper joint (1) and in the limit cavity of the sealing sleeve (8), the diameter of the spring is slightly smaller than the inner diameter of the limit cavity, when the upper joint (1) is far away from the outer sleeve (17), namely the outer boss of the upper joint (1) is in contact with the inner boss of the outer sleeve (17), the spring (3) is in a slightly compressed state, and the spring (3) is gradually compressed along with the downward movement of the upper joint (1).
5. The self-driven rotary casing running tool according to claim 1, wherein a second sealing ring (5) is assembled between the inner circular surface at the upper end of the outer sleeve (17) and the outer circular surface at the lower end of the upper joint (1), a boss is arranged on the inner surface at the tail end of the upper side of the outer sleeve (17), the boss on the outer surface at the lower end of the upper joint (1) limits the outer sleeve (17), a sealing groove for assembling the sealing ring is arranged on the inner surface of the boss of the outer sleeve (17), and an elastic centralizer (6) is assembled on the outer surface of the boss.
6. A self-driving rotary casing running tool according to claim 1, characterized in that the rolling bodies (14) are seated in rolling body seats (15), the rolling body seats (15) being fitted in recesses in the lower end of the screw (9) and being in contact with the inner circumferential surface of the sealing end cap (16).
7. The self-driven rotary casing running tool as claimed in claim 6, wherein the sealing end cover (16) is in the shape of a circular ring, four threaded holes are uniformly distributed on the outer surface in the circumferential direction, the threaded holes are connected with the sealing sleeve (8) through connecting screws (12), and a stop table (9-1) at the lower end of the screw rod (9) and the inner surface of a cavity at the upper end of the drilling and grinding guide shoe (13) are tightly pressed on the sealing end cover (16) to limit axial movement.
8. A self-driving rotary casing running tool according to claim 6, characterized in that the roller body seat (15) is composed of two parts which are symmetrical up and down, the cavity of the roller body seat (15) is used for placing the spherical rolling body (14), the space of the cavity is slightly larger than the volume of the rolling body (14), the opening of the cavity of the roller body seat (15) is smaller than the diameter of the rolling body (14), the rolling body (14) is arranged in the roller body seat (15) and then is assembled in the wedge-shaped groove (9-2) of the screw rod (9), and the matching of the roller body seat (15) and the wedge-shaped groove (9-2) is tight fit.
9. The self-driven rotary casing running tool as claimed in claim 1, wherein a fourth seal ring (11) is assembled between an inner circular surface at the upper end of the drilling and grinding guide shoe (13) and an outer circular surface at the lower end of the sealing sleeve (8), the drilling and grinding guide shoe (13) is in threaded connection with the screw (9), the upper end part of the drilling and grinding guide shoe is sleeved on the outer surface of the sealing sleeve (8), and a seal groove for assembling the seal ring is formed in the inner surface of the drilling and grinding guide shoe (13) sleeved on the outer surface part of the sealing sleeve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110269132.4A CN112814570B (en) | 2021-03-12 | 2021-03-12 | Self-driven rotary casing running tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110269132.4A CN112814570B (en) | 2021-03-12 | 2021-03-12 | Self-driven rotary casing running tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112814570A CN112814570A (en) | 2021-05-18 |
| CN112814570B true CN112814570B (en) | 2022-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110269132.4A Active CN112814570B (en) | 2021-03-12 | 2021-03-12 | Self-driven rotary casing running tool |
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| CN (1) | CN112814570B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007231733A (en) * | 2007-06-18 | 2007-09-13 | T F T:Kk | Double pipe type excavating tool |
| CN107044260A (en) * | 2017-02-22 | 2017-08-15 | 西南石油大学 | Drive casing appliances in a kind of screw drive fully mechanical top |
| CN207420537U (en) * | 2017-10-18 | 2018-05-29 | 中国石油集团渤海钻探工程有限公司 | Self-aiming rotates float shoe |
| CN208024274U (en) * | 2018-01-23 | 2018-10-30 | 中石化石油工程技术服务有限公司 | A kind of whirling vibration casing guiding tripping in tool |
| CN112302581A (en) * | 2019-07-26 | 2021-02-02 | 中石化石油工程技术服务有限公司 | Rotatory running tool of sand control screen pipe for extended reach well |
-
2021
- 2021-03-12 CN CN202110269132.4A patent/CN112814570B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007231733A (en) * | 2007-06-18 | 2007-09-13 | T F T:Kk | Double pipe type excavating tool |
| CN107044260A (en) * | 2017-02-22 | 2017-08-15 | 西南石油大学 | Drive casing appliances in a kind of screw drive fully mechanical top |
| CN207420537U (en) * | 2017-10-18 | 2018-05-29 | 中国石油集团渤海钻探工程有限公司 | Self-aiming rotates float shoe |
| CN208024274U (en) * | 2018-01-23 | 2018-10-30 | 中石化石油工程技术服务有限公司 | A kind of whirling vibration casing guiding tripping in tool |
| CN112302581A (en) * | 2019-07-26 | 2021-02-02 | 中石化石油工程技术服务有限公司 | Rotatory running tool of sand control screen pipe for extended reach well |
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| Publication number | Publication date |
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| CN112814570A (en) | 2021-05-18 |
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