CN117418801A - Perforation tool string conveying device with sliding function - Google Patents
Perforation tool string conveying device with sliding function Download PDFInfo
- Publication number
- CN117418801A CN117418801A CN202311734546.5A CN202311734546A CN117418801A CN 117418801 A CN117418801 A CN 117418801A CN 202311734546 A CN202311734546 A CN 202311734546A CN 117418801 A CN117418801 A CN 117418801A
- Authority
- CN
- China
- Prior art keywords
- upper joint
- rotating wheel
- joint
- rotating
- sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims 1
- 238000010030 laminating Methods 0.000 claims 1
- 230000005484 gravity Effects 0.000 abstract description 3
- 239000003208 petroleum Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
-
- 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
- E21B17/02—Couplings; joints
-
- 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
- E21B17/1057—Centralising devices with rollers or with a relatively rotating sleeve
Abstract
The invention relates to the technical field of underground instrument centralizing or auxiliary conveying tools in the field of petroleum equipment, in particular to a perforation tool string conveying device with a sliding function, which comprises: the conveying device provided by the invention can effectively reduce the contact area of an instrument and a sleeve or a well wall in the process of operation of a highly-deviated well, and greatly reduce the friction force between an instrument string and the sleeve and the well wall, thereby ensuring that the instrument can reach the operation of a highly-deviated well section by utilizing gravity.
Description
Technical Field
The invention relates to the technical field of underground instrument centralizing or auxiliary conveying tools in the field of petroleum equipment, in particular to a perforation tool string conveying device with a sliding function.
Background
At present, a common instrument centralizer is a ball type centralizer, which has the problems of poor stability, large friction resistance with a well wall, easy blocking of balls and the like in the rotating process, has short service life and reduces the operation efficiency;
in the perforation operation process of the highly deviated well, the perforating gun string is not only required to slide in the sleeve, but also required to rotate around the axis, so as to adjust the azimuth angle of perforation; at present, no more effective method is available for reducing the larger friction resistance generated by the perforating gun string and the sleeve when the perforating gun string rotates around the axis;
the Chinese patent with the document number of CN204877311U discloses a self-sealing box centralizer of a lifter, which comprises a centralizing cylinder and a reinforced centralizing ring, wherein the centralizing cylinder is a two-petal hollow cylinder and is separated into two identical centralizing blocks from the center of the cylinder; the reinforcing centralizing ring is positioned on the outer ring of the centralizing cylinder. The present document further relates to a lift with the lift self-sealing cartridge centralizer of the present document. The self-sealing box centralizer of the lifter effectively reduces the turning radius, so that the buckling load of the oil pipe is increased, the oil pipe is not easy to bend and deform, the safety coefficient of underground operation is increased, but the problem that the stability is poor and the friction resistance with a well wall is large in the rotation process of the centralizer is not disclosed;
chinese patent document No. CN218235061U discloses a casing centralizer for radial drilling which is convenient to install, comprising: the combined and fixed structure of the centralizer comprises a first centralizer sleeve, a second centralizer sleeve, a centralizer combined and fixed structure, a sleeve and a sleeve sliding key, wherein the first centralizer sleeve is rotationally connected with the second centralizer sleeve, the centralizer combined and fixed structure is arranged at the connecting end of the first centralizer sleeve and the connecting end of the second centralizer and can be mutually fixed and detached for connection, the outer diameter surface of the sleeve is matched with the inner diameter of an integral structure formed between the first centralizer sleeve and the second centralizer sleeve, the sleeve sliding key is equidistantly arranged on the inner diameter surfaces of the first centralizer sleeve and the second centralizer sleeve, and the sleeve sliding key is matched with the outer diameter surface of the sleeve and can mutually slide. The casing centralizer is isolated from the casing, and abrasion of friction force to the inner diameter surface of the casing centralizer is reduced. Meanwhile, the casing centralizer is installed in a combined disassembly mode from the outer diameter surface of the casing, so that the complexity of replacement and sleeving is reduced; however, how to solve the problem of reducing the larger friction resistance generated by the perforating gun string and the sleeve when rotating around the axis in the perforation process of the highly deviated well is not disclosed;
therefore, how to design a perforation tool string conveying device with the sliding function, which effectively reduces the contact area between an instrument and a sleeve or a well wall, greatly reduces the friction force between the instrument string and the sleeve or the well wall, has high stability and is not easy to be blocked, and becomes the problem to be solved at present.
Disclosure of Invention
The invention aims to provide a perforation tool string conveying device with a sliding function, so as to solve the problems.
In order to achieve the above purpose, the following technical scheme is provided:
a sliding function perforation tool string delivery device comprising: the upper joint and the lower joint are of cylindrical structures, the bottom of the upper joint is radially inwards contracted and arranged and axially extends downwards, one end of the upper joint, which extends downwards, is provided with a male buckle along the outer wall ring of the upper joint, the top of the lower joint is provided with an inner cavity with a female buckle downwards, the inner cavity is matched with the bottom of the upper joint, the upper joint is fixedly connected with the lower joint through a male buckle, the middle part of the upper joint is symmetrically provided with semi-closed arc-shaped notches along the circumferential direction of the upper joint, the rotating sleeve is arranged in the arc-shaped notches, the rotating sleeve is attached to the upper joint and can rotate around the upper joint, the rotating sleeve is externally provided with a mounting shaft along the upper joint, the rotating sleeve is arranged on the mounting shaft and can rotate around the mounting shaft, the rotating wheel is of a spherical crown structure, and the rotating wheel of the spherical crown structure and/or the rotating around the upper joint is radially outwards extended to the maximum distance, the maximum extending distance is not changed, and the conveying device can realize centering of the rotating wheel or the conveying device.
Preferably, the mounting shaft is further sleeved with a bearing, the inner ring end of the bearing is fixed with the mounting shaft, the rotating wheel is sleeved on the outer ring end of the bearing, and when the rotating wheel rotates, the outer ring end of the bearing is driven by the rotating wheel to rotate around the mounting shaft, so that the friction of the rotating wheel rotating is reduced.
Preferably, the joint of upper joint and swivel cap still is equipped with the hole that runs through arc breach top and bottom both ends along the circumference of upper joint, the swivel cap passes the hole, and then laminates with the upper joint mutually and set up, the hole can link up the upper joint along the circumference of upper joint and set up or not link up half-closed setting, swivel cap and hole are corresponding integrative setting or components of a whole that can function independently setting.
Preferably, when the rotating sleeve is integrally arranged, each rotating wheel can be driven by the rotating sleeve to rotate along the same direction, so that the integrity of the rotating process is improved, and when the rotating sleeve is arranged in a split mode, each rotating wheel is driven by the corresponding rotating sleeve to rotate, and then the position of the conveying device can be adjusted in all directions through different rotations of each rotating wheel.
Preferably, the upper joint is arranged along the four side walls of the arc-shaped notch in an outward extending way, the rotating sleeve can drive the rotating wheel to rotate towards the notch of the arc-shaped notch, and then the rotating wheel can rotate towards the inside of the notch along the inner wall of the notch for improving the stability of the rotating wheel.
Preferably, the rotating wheel is arranged outwards along the radial direction of the upper joint, the conveying device is abutted with the outside through the rotating wheel, and the external force exerted on the rotating wheel is reduced through the rotation of the rotating wheel and/or the rotating sleeve.
Preferably, the bearing is seamlessly arranged between the rotating sleeve and the rotating wheel, and when the rotating wheel and the bearing rotate relatively, foreign matters do not enter among the rotating sleeve, the bearing and the rotating wheel.
Preferably, the top of the upper joint is provided with an internal thread for connecting with the lower joint, the bottom of the lower joint is provided with an external thread for connecting with the upper joint, the upper joint and the lower joint are all arranged along the middle part of the upper joint and penetrate through the open holes from top to bottom, and when the upper joint is fixedly connected with the lower joint, the open holes of the upper joint and the lower joint are overlapped up and down and are mutually communicated.
Preferably, the upper joint and the lower joint are provided with annular grooves at fixed distances along the radial directions inwards, the annular grooves are correspondingly positioned at the bottoms of the upper joint and the lower joint and are not provided with threads, and O-shaped sealing rings are arranged in the annular grooves and used for limiting the movement of the upper joint and the lower joint deviating from the central line of the upper joint and the lower joint.
The beneficial effects of the invention are as follows:
1. according to the conveying device, in the operation process of the highly deviated well, the contact area between an instrument and a casing or a well wall can be effectively reduced, and the friction force between an instrument string and the casing and the wall of the well can be greatly reduced, so that the instrument can reach the operation of a well section with a higher inclination by utilizing gravity; the spherical crown structure of the rotating wheel reduces the contact area with external substances on one hand, and on the other hand, when the rotating wheel rotates to the grooving position of the arc-shaped notch, the spherical crown structure can be attached to the inner wall of the grooving position, the inner wall of the grooving position can apply uniform force to the rotating wheel to prevent the rotating wheel from being blocked and the like, and meanwhile, the stability of the rotating wheel in rotation is improved through relative dislocation movement between cambered surfaces with different angles;
2. the totally enclosed bearing can avoid blockage of sand, mud and scraps in the pit, and can not cause locking of the rotating wheel; the impact of substances such as sediment on the rotating part is prevented through the close fitting arrangement, so that the rotating precision of the rotating part is ensured, and the service life of the rotating part is prolonged;
3. the invention adopts a double-rotation mode, and can rotate in both the transverse and longitudinal directions, thereby reducing the well-descending resistance to the maximum extent and leading the tool to be serially advanced farther.
Drawings
FIG. 1 is a schematic diagram in semi-section of the present invention;
FIG. 2 is a second schematic diagram of the present invention in semi-section;
FIG. 3 is a schematic view of the structure of the upper joint;
FIG. 4 is a schematic view of the structure of the lower joint;
FIG. 5 is a schematic view of the structure of the wheel;
FIG. 6 is a schematic view of a first embodiment of a rotary sleeve;
FIG. 7 is a schematic diagram of a rotating sleeve according to a second embodiment;
FIG. 8 is a schematic diagram of a rotary sleeve according to a second embodiment;
FIG. 9 is a schematic diagram of a second embodiment of a rotating sleeve;
in the figure: the device comprises a 1-upper connector, a 11-top connector, a 12-bottom connector, a 13-arc notch, a 14-inner hole, a 2-rotating wheel, a 3-bearing, a 4-rotating sleeve, a 41-mounting shaft, a 5-lower connector, a 51-top connector, a 52-bottom connector, a 6-annular groove and a 61-O-shaped sealing ring.
Detailed Description
The technical solutions of the structural schematic diagrams in the embodiments of the present invention will be clearly and fully described in the following in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one: as shown in fig. 1-7, a sliding function perforation tool string delivery device comprises: the upper joint 1, the lower joint 5, the rotary sleeve 4 and the rotating wheel 2 are of cylindrical structures, the bottom 12 of the upper joint is arranged in a contracted way along the radial direction and extends downwards along the axial direction, one end of the upper joint 1 extending downwards is provided with a male buckle along the outer wall ring, the top 51 of the lower joint is provided with an inner cavity with a female buckle downwards, the inner cavity is matched with the bottom 12 of the upper joint, the upper joint 1 is fixedly connected with the lower joint 5 through a male buckle, the middle part of the upper joint 1 is symmetrically provided with a semi-closed arc notch 13 along the circumferential direction inwards, the rotary sleeve 4 is arranged in the arc notch 13, the rotary sleeve 4 is attached to the upper joint 1 and can rotate around the upper joint 1, the rotary sleeve 4 is outwards provided with a mounting shaft 41 along the upper joint 1, the rotating wheel 2 is sleeved on the mounting shaft 41 and can rotate around the mounting shaft 41, the rotating wheel 2 is of a spherical crown structure, and when the rotating wheel 2 of the spherical crown structure rotates around the upper joint 1, the radial direction of the rotating wheel 2 extends to the maximum distance is fixed, and the maximum extension distance is not changed outwards; the conveying device can realize centering conveying operation through the rotation of the rotating wheel 2 and/or the rotating sleeve 4; the rotating wheel 2 can rotate around the installation shaft 41 in 360 degrees, meanwhile, the rotating wheel 2 can also revolve around the lower joint 5 along with the rotating sleeve 4, the flexibility of the device is increased due to double rotation dimensions, the contact area between an instrument and a casing or a well wall can be effectively reduced, the friction force between the instrument string and the casing and the wall of the well is greatly reduced, and therefore the instrument can reach a well section with larger inclination by utilizing gravity; the spherical crown structure of the rotating wheel 2 reduces the contact area with external substances on one hand, and on the other hand, when the rotating wheel 2 rotates towards the slotting position of the arc-shaped notch 13, the spherical crown structure can be attached to the inner wall of the slotting position, the inner wall of the slotting position can apply uniform force to the rotating wheel 2, the clamping and other conditions of the rotating wheel 2 are prevented, and meanwhile, the stability in the rotation of the rotating wheel 2 is improved through the relative dislocation movement between cambered surfaces with different angles;
in this embodiment, the mounting shaft 41 is further sleeved with a bearing 3, the inner ring end of the bearing 3 is fixed with the mounting shaft 41, the rotating wheel 2 is sleeved on the outer ring end of the bearing 3, and when the rotating wheel 2 rotates, the outer ring end of the bearing 3 is driven by the rotating wheel 2 to rotate around the mounting shaft 41, so as to reduce the friction of the rotating wheel 2 rotating;
in this embodiment, the joint between the upper joint 1 and the rotary sleeve 4 is further provided with an inner hole 14 penetrating through the top and bottom ends of the arc-shaped notch 13 along the circumferential direction of the upper joint 1, the rotary sleeve 4 penetrates through the inner hole 14 and is further jointed with the upper joint 1, the inner hole 14 penetrates through the upper joint 1 along the circumferential direction of the upper joint 1, and the rotary sleeve 4 and the inner hole 14 are correspondingly and integrally arranged;
in this embodiment, each rotating wheel 2 can be driven by the rotating sleeve 4 to rotate along the same direction, so as to improve the integrity of the rotation process;
in the embodiment, the upper joint 1 is arranged along the four side walls of the arc-shaped notch 13 in an outward extending grooving way, the rotating sleeve 4 can drive the rotating wheel 2 to rotate towards the grooving position of the arc-shaped notch 13, and then the rotating wheel 2 can rotate towards the inside of the grooving along the inner wall of the grooving position, so that the stability of the rotating wheel 2 is improved;
in the embodiment, the rotating wheel 2 is arranged outwards along the radial direction of the upper joint 1, the conveying device is abutted with the outside through the rotating wheel 2, and the external force borne by the rotating wheel 2 is reduced through the rotation of the rotating wheel 2 and/or the rotating sleeve 4;
in this embodiment, the bearing 3 is seamlessly disposed between the rotating sleeve 4 and the rotating wheel 2, so that when the rotating wheel 2 and the bearing 3 rotate relatively, no foreign substances enter between the rotating sleeve 4, the bearing 3 and the rotating wheel 2; the impact of substances such as sediment on the rotating part is prevented through close fitting, so that the rotating precision of the rotating part is ensured, and the service life of the rotating part is prolonged;
in the embodiment, the top 11 of the upper joint is provided with an internal thread for connecting the lower joint 5, the bottom 52 of the lower joint is provided with an external thread for connecting the upper joint, the upper joint 1 and the lower joint 5 are all arranged along the middle part of the upper joint and penetrate through the open holes from top to bottom, and when the upper joint 1 and the lower joint 5 are fixedly connected, the open holes of the upper joint 1 and the lower joint are overlapped up and down and are mutually communicated;
in this embodiment, the upper joint 1 and the lower joint 5 are provided with annular grooves 6 at a fixed distance radially inward, corresponding to the portions at the bottoms of the upper joint and the lower joint, which are not provided with threads, and O-rings 61 are installed in the annular grooves 6 to limit the movement of the upper joint 1 and the lower joint 5 deviating from the central line thereof and ensure the isolation and sealing of the inner hole of the device and the liquid in the well.
Embodiment two: as shown in fig. 8 to 9, this embodiment differs from the first embodiment in that: the inner hole 14 is arranged in a semi-closed manner without penetrating along the circumferential direction of the upper joint 1, and the rotary sleeve 4 is correspondingly and separately arranged with the inner hole 14; each rotating wheel 2 is driven to rotate by the corresponding rotating sleeve 4, and therefore the position of the conveying device can be adjusted in all directions through different rotations of each rotating wheel 2.
Claims (9)
1. A perforating tool string conveying device with a sliding function, which is characterized in that: comprising the following steps: the upper joint and the lower joint are of cylindrical structures, the bottom of the upper joint is radially inwards contracted and arranged and axially extends downwards, one end of the upper joint, which extends downwards, is provided with a male buckle along the outer wall ring of the upper joint, the top of the lower joint is provided with an inner cavity with a female buckle downwards, the inner cavity is matched with the bottom of the upper joint, the upper joint is fixedly connected with the lower joint through a male buckle, the middle part of the upper joint is symmetrically provided with semi-closed arc-shaped notches along the circumferential direction of the upper joint, the rotating sleeve is arranged in the arc-shaped notches, the rotating sleeve is attached to the upper joint and can rotate around the upper joint, the rotating sleeve is externally provided with a mounting shaft along the upper joint, the rotating sleeve is arranged on the mounting shaft and can rotate around the mounting shaft, the rotating wheel is of a spherical crown structure, and the rotating wheel of the spherical crown structure and/or the rotating around the upper joint is radially outwards extended to the maximum distance, the maximum extending distance is not changed, and the conveying device can realize centering of the rotating wheel or the conveying device.
2. A sliding function perforation tool string delivery device according to claim 1, wherein: the installation shaft is further sleeved with a bearing, the inner ring end of the bearing is fixed with the installation shaft, the rotating wheel is sleeved on the outer ring end of the bearing, and when the rotating wheel rotates, the outer ring end of the bearing is driven by the rotating wheel to rotate around the installation shaft, so that the friction of the rotating wheel rotating is reduced.
3. A sliding function perforation tool string delivery device according to claim 2, wherein: the upper joint is equipped with the hole that runs through arc breach top and bottom both ends still along the circumference of upper joint with rotatory cover laminating department, rotatory cover passes the hole, and then laminates with the upper joint mutually and set up, the hole can link up the upper joint setting along the circumference of upper joint or do not link up the semi-closed setting, rotatory cover sets up or components of a whole that can function independently setting with corresponding ground of hole.
4. A sliding function perforation tool string delivery device according to claim 3, wherein: when the rotating sleeve is integrally arranged, each rotating wheel can be driven to rotate along the same direction by the rotating sleeve, the integrity of the rotating process is improved, and when the rotating sleeve is arranged in a split mode, each rotating wheel is driven to rotate by the corresponding rotating sleeve, and then the position of the conveying device can be adjusted in all directions through different rotations of each rotating wheel.
5. The skid-operated perforating tool string delivery apparatus as recited in claim 4 wherein: the upper joint is arranged along the four side walls of the arc-shaped notch in an outward extending grooving mode, the rotating sleeve can drive the rotating wheel to rotate towards the grooving position of the arc-shaped notch, and then the rotating wheel can rotate towards the inside of the groove along the inner wall of the grooving position, so that the stability of the rotating wheel is improved.
6. The skid-operated perforating tool string delivery apparatus as recited in claim 5 wherein: the rotating wheel is arranged outwards along the radial direction of the upper joint, the conveying device is in butt joint with the outside through the rotating wheel, and the external force borne by the rotating wheel is reduced through the rotation of the rotating wheel and/or the rotating sleeve.
7. The skid-operated perforating tool string delivery apparatus as recited in claim 6 wherein: the bearing is seamlessly arranged between the rotating sleeve and the rotating wheel, and when the rotating wheel and the bearing rotate relatively, foreign matters do not enter among the rotating sleeve, the bearing and the rotating wheel.
8. A sliding function perforation tool string delivery apparatus according to claim 7, wherein: the top of the upper joint is provided with an internal thread for connecting with the lower joint, the bottom of the lower joint is provided with an external thread for connecting with the upper joint, the upper joint and the lower joint are all arranged along the middle part of the upper joint and penetrate through the open holes from top to bottom, and when the upper joint is fixedly connected with the lower joint, the open holes of the upper joint and the lower joint are overlapped up and down and are mutually communicated.
9. A sliding function perforation tool string delivery apparatus according to claim 8, wherein: the upper joint and the lower joint are provided with annular grooves at fixed distances along the radial directions inwards, the annular grooves are correspondingly positioned at the bottoms of the upper joint and the lower joint and are not provided with threads, and O-shaped sealing rings are arranged in the annular grooves and used for limiting the upper joint and the lower joint to deviate from the central line of the upper joint and the lower joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311734546.5A CN117418801A (en) | 2023-12-18 | 2023-12-18 | Perforation tool string conveying device with sliding function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311734546.5A CN117418801A (en) | 2023-12-18 | 2023-12-18 | Perforation tool string conveying device with sliding function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117418801A true CN117418801A (en) | 2024-01-19 |
Family
ID=89525087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311734546.5A Pending CN117418801A (en) | 2023-12-18 | 2023-12-18 | Perforation tool string conveying device with sliding function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117418801A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6378627B1 (en) * | 1996-09-23 | 2002-04-30 | Intelligent Inspection Corporation | Autonomous downhole oilfield tool |
| CN208966226U (en) * | 2018-10-19 | 2019-06-11 | 中石化江汉石油工程有限公司 | Releasing pup joint for horizontal well conveying tractor perforation tool |
| US20200332600A1 (en) * | 2017-12-25 | 2020-10-22 | Obschestvo S Ogranichennoi Otvetstvennostyu "Perfobur" | Drilling assembly with a small hydraulic downhole motor |
| CN218894641U (en) * | 2022-08-16 | 2023-04-21 | 吉林市双林射孔器材有限责任公司 | Perforating tool crawling rotary centralizer for perforation operation |
| CN219119157U (en) * | 2023-02-15 | 2023-06-02 | 四川奇才能源科技有限公司 | Drillable rotary power sleeve guide shoe |
-
2023
- 2023-12-18 CN CN202311734546.5A patent/CN117418801A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6378627B1 (en) * | 1996-09-23 | 2002-04-30 | Intelligent Inspection Corporation | Autonomous downhole oilfield tool |
| US20200332600A1 (en) * | 2017-12-25 | 2020-10-22 | Obschestvo S Ogranichennoi Otvetstvennostyu "Perfobur" | Drilling assembly with a small hydraulic downhole motor |
| CN208966226U (en) * | 2018-10-19 | 2019-06-11 | 中石化江汉石油工程有限公司 | Releasing pup joint for horizontal well conveying tractor perforation tool |
| CN218894641U (en) * | 2022-08-16 | 2023-04-21 | 吉林市双林射孔器材有限责任公司 | Perforating tool crawling rotary centralizer for perforation operation |
| CN219119157U (en) * | 2023-02-15 | 2023-06-02 | 四川奇才能源科技有限公司 | Drillable rotary power sleeve guide shoe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2765901C1 (en) | Adjustable bending node for downhole engine | |
| CA2928055C (en) | Offset shaft bearing assembly | |
| EP0251543B1 (en) | Downhole stabilisers | |
| US9534638B2 (en) | Retention means for a seal boot used in a universal joint in a downhole motor driveshaft assembly | |
| CN108104715B (en) | Torsion impactor based on turbine and gear | |
| CN108798503B (en) | Screw type circumferential impact drilling tool | |
| CN106715940B (en) | Universal drive shaft assembly | |
| US9404527B2 (en) | Drive shaft assembly for a downhole motor | |
| US11542753B2 (en) | Mechanical rotary steering drilling tool | |
| US9309720B2 (en) | Double shaft drilling apparatus with hanger bearings | |
| CN105705720A (en) | Shock tool for drillstring | |
| US10435961B2 (en) | Securing mechanism for rotary assembly wear sleeves | |
| US20160273276A1 (en) | Drive shaft assembly for downhole mud motor configured for directional drilling | |
| CN108049803B (en) | Impeller type differential torque impact device | |
| CN107532452B (en) | CV joint for drilling motor and method | |
| US9382950B2 (en) | Systems and methods for increasing the life of downhole driveshaft assemblies | |
| CN117418801A (en) | Perforation tool string conveying device with sliding function | |
| US20180073566A1 (en) | Drive shaft assembly | |
| CN104271868A (en) | Mechanically activated contingency release system and method | |
| CN106014198B (en) | A kind of efficient connecting pipes drilling rig | |
| CN201739294U (en) | Locking device used for radial bearing static ring of drive shaft of spiral drilling rig | |
| WO2014074337A1 (en) | Cv joint for down hole motor and method | |
| CN116658510A (en) | Self-adaptive transmission shaft assembly | |
| CN205743756U (en) | Needle roller spiral centering device | |
| CA2270109C (en) | Adjustable housing for a mud motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |