CN114412375A - Well hole connector for branch well - Google Patents
Well hole connector for branch well Download PDFInfo
- Publication number
- CN114412375A CN114412375A CN202210294813.0A CN202210294813A CN114412375A CN 114412375 A CN114412375 A CN 114412375A CN 202210294813 A CN202210294813 A CN 202210294813A CN 114412375 A CN114412375 A CN 114412375A
- Authority
- CN
- China
- Prior art keywords
- pipe body
- tongue plate
- sleeve
- well
- connector
- 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
Images
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
- 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0035—Apparatus or methods for multilateral well technology, e.g. for the completion of or workover on wells with one or more lateral branches
Abstract
The invention discloses a well hole connector for a branch well, which comprises an upper pipe body, a middle pipe body and a lower pipe body, wherein the middle pipe body is arranged between the upper pipe body and the lower pipe body, the upper pipe body and the middle pipe body are in flat threaded connection, the middle pipe body and the lower pipe body are in flat threaded connection, a coupling is arranged on the left side of the upper pipe body through sleeve threaded connection, a tongue plate sleeve is arranged on the excircle of the lower pipe body, a tongue plate is welded on the tongue plate sleeve, and the shoulder parts of the middle pipe body and the lower pipe body are correspondingly matched with the tongue plate sleeve. The tongue plate sleeve is independent, three risk points of a conventional well connector are effectively overcome, the tongue plate sleeve obtains a fixed angle through the matching of the convex keys and the grooves, the tongue plate sleeve is directly replaced if the tongue plate is damaged, the maintenance cost is low, the construction efficiency of the tongue plate hanging window can be improved through the clamping device, the operation time and the operation cost are reduced, and the practicability is high.
Description
Technical Field
The invention relates to the technical field of drilling and completion tools for branched wells of oil and gas fields, in particular to a well hole connector for the branched wells.
Background
When the lateral well is used for drilling and well completion operation, in order to ensure that the window of the lateral well is supported more firmly mechanically, the tongue plate type well connector is used for suspension and support, the conventional tongue plate type well connector is used for directly welding a tongue plate on a pipe body, and the following three risk points exist: 1. the tongue plate is directly welded on the tube body, and the tube body forms large internal stress due to welding, so that the mechanical property of the tube body is seriously influenced; 2. after the tongue plate is hung on the window, the welding seam is directly stressed, the weight of the pipe column is directly pressed on the welding seam, the welding seam is easily torn, the tongue plate falls off, and therefore the well hole connector loses functions; 3. the whole pipe body is always scrapped after the welding part or the tongue plate is damaged, the subsequent maintenance is inconvenient, the cost is high, 4, the operation difficulty of hanging the window by the tongue plate is high during construction, time and labor are wasted, the position of the window can be rapidly checked through the clamping device, the operation reference is provided for the ground, and the operation time of hanging the window by the tongue plate is shortened.
Disclosure of Invention
The invention aims to solve the defects in the prior art, such as: the pipe body forms very big internal stress because of the welding, and the welding seam is direct atress, leads to the welding seam to tear easily and the hyoplastron drops, inconvenient subsequent maintenance, and the cost is higher, and holistic installation operation is comparatively loaded down with trivial details, needs multiple instrument to cooperate the use and a well hole connector for the branch well that provides.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a well hole connector for branching well, includes upper portion body, middle part body and lower part body, the middle part body is located and sets up between upper portion body and the lower part body, be flat threaded connection between upper portion body and the middle part body, be flat threaded connection between middle part body and the lower part body, upper portion body left side is equipped with the coupling through sleeve pipe threaded connection, the installation is equipped with the hyoplastron sleeve on the body excircle of lower part, the welding is equipped with the hyoplastron on the hyoplastron sleeve, middle part body and lower part body circular bead department and hyoplastron sleeve match and correspond the setting, the lower part body outside is equipped with the screens device.
Preferably, the upper side of the middle pipe body is provided with a large long groove, and the lower side of the middle pipe body is provided with a spline groove.
Preferably, a spline boss is arranged on the left side of the tongue plate sleeve, and a groove is formed in the outer circle of the tongue plate sleeve.
Preferably, the clamping device comprises a clamping sleeve, a pressing plate, an elastic module, a spring, a fastening pin and a countersunk screw.
Preferably, the locking device is fixed to the outer circle of the lower tube body by a locking pin. Install the elastic module in the screens sleeve, the elastic module outside is processed into certain angle inclined plane, and interior survey processing has the counter bore, install the spring in the counter bore, the elastic module passes through clamp plate and countersunk screw fixes on the screens sleeve.
Preferably, the elastic module and the tongue plate in the blocking device are in the same orientation. The elastic module can compress the spring along the radial direction of the clamping sleeve.
Compared with the prior art, the invention has the beneficial effects that:
1, a tongue plate sleeve structure is adopted, a tongue plate is directly welded on the tongue plate sleeve, the mechanical property of a pipe body is not changed, and the branched well hole connector has higher mechanical stability;
2, the tongue plate sleeve is designed to be a detachable structure, and can be directly replaced if the tongue plate is damaged, so that the maintenance cost is low;
3, after the tongue plate is hung on the window, the weight of the pipe column is born by the tongue plate sleeve, so that the safety and stability are improved;
4, the tongue plate sleeve is simple in structure, easy to produce and process and low in production cost;
5, the operation time of the tongue plate hanging window can be prolonged through the special clamping device, the whole construction efficiency is higher, and the practicability is higher.
Drawings
FIG. 1 is a schematic structural view of a well bore connector for a lateral well according to the present invention, wherein A-A is a cross-sectional view taken along A-A;
FIG. 2 is a view of a structure of a middle pipe body of a well bore connector for a lateral well according to the present invention;
FIG. 3 is a cross-sectional view of a tongue sleeve in a wellbore connector for a multilateral well according to the present invention;
FIG. 4 is a schematic view illustrating welding of a tongue plate and a tongue plate sleeve in a wellbore connector for a multilateral well according to the present invention;
FIG. 5 is a schematic view of a window of a lateral well bore connector according to the present invention;
FIG. 6 is a cross-sectional view of a lateral well bore connector of the lateral well bore connector according to the present invention, with a lateral well bore guide sub installed therein;
FIG. 7 is a schematic structural view of a second embodiment of a wellbore connector for a multilateral well according to the present invention;
FIG. 8 is a schematic structural view of a third embodiment of a wellbore connector for a multilateral well according to the present invention;
FIG. 9 is a schematic view of a position-locking device in a well-bore connector for a lateral well according to the present invention;
in the figure: 1 coupling, 2 upper pipe bodies, 3 middle pipe bodies, 4 tongue plate sleeves, 5 tongue plates, 6 lower pipe bodies, 7 lower joints, 8 clamping devices, 301 large long grooves, 302 spline grooves, 401 spline bosses, 402 grooves, 501 welding grooves, 502 open grooves, 503 welding seams, 1101 main well bores, 1102 branch well bore windows, 1103 branch well bores, 1104 branch well bore guide joints and 12 rivets.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1, 2, 3, 4, 8, and 9, in a first embodiment: a well hole connector for a branched well comprises an upper pipe body 2, a middle pipe body 3 and a lower pipe body 6, wherein the middle pipe body 3 is arranged between the upper pipe body 2 and the lower pipe body 6, the upper pipe body 2 and the middle pipe body 3 are in flat threaded connection, the middle pipe body 3 and the lower pipe body 6 are in flat threaded connection, a coupling 1 is arranged on the left side of the upper pipe body 2 through sleeve threaded connection, a tongue plate sleeve 4 is arranged on the excircle of the lower pipe body 6, a tongue plate 5 is welded on the tongue plate sleeve 4, one end of the tongue plate 5 is provided with a welding groove 501 and an open groove 502, the tongue plate 5 can be welded on the tongue plate sleeve 4 along a welding line 503, the shoulder parts of the middle pipe body 3 and the lower pipe body 6 are correspondingly matched with the tongue plate sleeve 4, a large long groove 301 is arranged on the upper side of the middle pipe body 3, a spline groove 302 is arranged on the lower side of the middle pipe body 3, and a spline boss 401 is arranged on the left side of the tongue plate sleeve 4, and tongue board sleeve 4 excircle department is equipped with recess 402, lower part body 6 threaded connection lower joint 7, and lower part body 6 outside is equipped with screens device 8, and screens device 8 includes screens sleeve 801, clamp plate 802, elasticity module 803, spring 804, tightly decides pin 805, countersunk screw 806. The locking device 8 is fixed to the outer circle of the lower tubular body 6 by a locking pin 805. Install elasticity module 803 in screens sleeve 801, the elasticity module 803 outside is processed into certain angle inclined plane, and interior survey processing has the counter bore, install spring 804 in the counter bore, elasticity module 803 passes through clamp plate 802 and countersunk screw 806 to be fixed on screens sleeve 801.
Example two: referring to fig. 7, unlike in embodiment 1, 4 through holes are formed in the tongue plate 5, 1 counter bore is formed in the middle tube 3, and the rivet 12 passes through 1 through hole in the tongue plate 5 and is inserted into the counter bore in the middle tube 3, and at this time, half of the rivet 12 is installed in the counter bore in the middle tube 3 and half is installed in one through hole in the tongue plate 5. The other 3 through holes on the tongue plate 5 are welded and fixed on the tube body 1202, meanwhile, the upper end of the outer edge of the tongue plate 5 is welded and fixed, and the tongue plate 5 is fixed on the middle tube body 3 in a rivet 12 fixing and welding mode.
Example three: referring to fig. 8, unlike the above two embodiments, the tongue plate 5 is formed with a long hole, the middle tube 3 is formed with a long boss, and the tongue plate 5 is mounted on the middle tube 3 while the long hole and the long boss are in a corresponding fit relationship, and the tongue plate is fixed by welding the periphery of the long hole and the outer edge of the tongue plate 5. According to the scheme, the long-strip boss on the middle pipe body 3 can be processed into a split type to be welded on the middle pipe body 3.
In the invention, the assembly process is as follows: taking the first embodiment as an example, the tongue plate 5 is welded on the tongue plate sleeve 4; installing the welded tongue plate sleeve 4 on the excircle of the lower pipe body 6; connecting the lower tube body 6 and the middle tube body 3 by screw threads, and ensuring that the position of the tongue plate 5 is consistent with the position of the large long groove 301 on the middle tube body 3 in the connecting process; the upper pipe body 2 is connected with the middle pipe body 3 through threads; and (3) installing the coupling 1 on the threads of the upper pipe body 2 to complete the assembly operation of the branched well hole connector.
The process of hanging the seat: as shown in fig. 5, the assembled wellbore connector is wholly lowered into a main wellbore 1101, the ground approves the lowering depth, and when the lowering depth reaches a branch wellbore window 1102, the pipe column is slowly rotated to enable an elastic module 803 on the clamping device 8 to be clamped into the branch wellbore window 1102, at this time, the first tongue plate 5 and the branch wellbore window 1102 are in the same orientation, the pipe column is continuously lowered, an outer inclined surface of the elastic module 803 is contacted with the branch wellbore window 1102, the elastic module 803 is retracted under the action of the gravity of the pipe column or the downward pressure applied by a wellhead to pass through the branch wellbore window 1102, at this time, the tongue plate 5 and the branch wellbore window 1102 are in the same orientation, the tongue plate 5 can be hung on the branch wellbore window 1102 by pressing the pipe column, and whether the tongue plate 5 is hung on the branch wellbore window 1102 is verified by the load.
Tripping in and out of lateral wellbore steering sub 1104: as shown in fig. 6, when a lower string in a lateral bore 1103 is operated, a lateral bore guiding joint 1104 needs to be lowered, generally, the lateral bore guiding joint 1104 is installed in a bore connector in advance and then the lateral bore 1103 is lowered, and when the main bore 1101 is operated, the lateral bore guiding joint 1104 can be taken out through a GS fishing spear, and the lateral bore guiding joint 1104 can be repeatedly lowered and taken out through the GS fishing spear.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. A well bore connector for a multilateral well comprises an upper pipe body (2), a middle pipe body (3) and a lower pipe body (6), it is characterized in that the middle pipe body (3) is arranged between the upper pipe body (2) and the lower pipe body (6), the upper pipe body (2) and the middle pipe body (3) are in flat threaded connection, the middle pipe body (3) and the lower pipe body (6) are in flat threaded connection, the left side of the upper pipe body (2) is provided with a coupling (1) through threaded connection of a sleeve, a tongue plate sleeve (4) is arranged on the excircle of the lower tube body (6), a tongue plate is welded on the tongue plate sleeve (4), the shoulders of the middle tube body (3) and the lower tube body (6) are correspondingly matched with the tongue plate sleeve (4), the clamping devices are arranged on the outer sides of the upper pipe body (2) and the lower pipe body (6).
2. A well bore connector for a branched well according to claim 1, wherein said middle tube (3) is provided with a large elongated slot (301) on the upper side and a spline groove (302) on the lower side of said middle tube (3).
3. A wellbore connector for a branch well according to claim 1, wherein a spline boss (401) is provided on the left side of the tongue plate sleeve (4), and a groove (402) is provided on the outer circumference of the tongue plate sleeve (4).
4. A well bore connector for a branched well according to claim 1, wherein a position retaining device (8) is mounted on the outer side of the lower tubular body (6), and the position retaining device (8) comprises a position retaining sleeve (801), a pressure plate (802), an elastic module (803), a spring (804), a fastening pin (805) and a countersunk screw (806).
5. The well bore connector for the branch well according to claim 4, wherein the clamping device (8) is fixed on the outer circle of the lower pipe body (6) through a fastening pin (805), an elastic module (803) is installed in the clamping sleeve (801), the outer side of the elastic module (803) is processed into an inclined plane with a certain angle, a counter bore is processed on the inner side, a spring (804) is installed in the counter bore, and the elastic module (803) is fixed on the clamping sleeve (801) through a pressing plate (802) and a counter screw (806).
6. A well bore connector for a branched well according to claim 4, characterized in that the elastic module (803) is in the same orientation as the tongue (5), the elastic module (803) being adapted to compress the spring (804) in the radial direction of the detent sleeve (801).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210294813.0A CN114412375A (en) | 2022-03-24 | 2022-03-24 | Well hole connector for branch well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210294813.0A CN114412375A (en) | 2022-03-24 | 2022-03-24 | Well hole connector for branch well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114412375A true CN114412375A (en) | 2022-04-29 |
Family
ID=81263948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210294813.0A Pending CN114412375A (en) | 2022-03-24 | 2022-03-24 | Well hole connector for branch well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114412375A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2782911Y (en) * | 2005-04-27 | 2006-05-24 | 大庆石油管理局 | Wall hook type tail pipe hanging device for lateral well |
| CN2864071Y (en) * | 2005-11-10 | 2007-01-31 | 新疆石油管理局钻井工艺研究院 | Pre-perforated split leads |
| CN2906025Y (en) * | 2006-05-22 | 2007-05-30 | 新疆石油管理局钻井工艺研究院 | Indicator for connection of pre-perforated branched joints |
| CN201148850Y (en) * | 2007-09-10 | 2008-11-12 | 新疆石油管理局钻井工艺研究院 | Suspension tools for branch well |
| CN101413384A (en) * | 2008-11-24 | 2009-04-22 | 中国石油集团长城钻探工程有限公司 | Method for sealing branch well window by using metal expansion pipe |
| CN201521272U (en) * | 2009-09-24 | 2010-07-07 | 中国石油集团西部钻探工程有限公司克拉玛依钻井工艺研究院 | Branching hanger |
| CN208996703U (en) * | 2018-07-10 | 2019-06-18 | 中石化石油工程技术服务有限公司 | A kind of Multilateral Wells coiled tubing guide device |
| CN113279713A (en) * | 2020-02-19 | 2021-08-20 | 中国石油化工股份有限公司 | Branch window supporting device |
-
2022
- 2022-03-24 CN CN202210294813.0A patent/CN114412375A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2782911Y (en) * | 2005-04-27 | 2006-05-24 | 大庆石油管理局 | Wall hook type tail pipe hanging device for lateral well |
| CN2864071Y (en) * | 2005-11-10 | 2007-01-31 | 新疆石油管理局钻井工艺研究院 | Pre-perforated split leads |
| CN2906025Y (en) * | 2006-05-22 | 2007-05-30 | 新疆石油管理局钻井工艺研究院 | Indicator for connection of pre-perforated branched joints |
| CN201148850Y (en) * | 2007-09-10 | 2008-11-12 | 新疆石油管理局钻井工艺研究院 | Suspension tools for branch well |
| CN101413384A (en) * | 2008-11-24 | 2009-04-22 | 中国石油集团长城钻探工程有限公司 | Method for sealing branch well window by using metal expansion pipe |
| CN201521272U (en) * | 2009-09-24 | 2010-07-07 | 中国石油集团西部钻探工程有限公司克拉玛依钻井工艺研究院 | Branching hanger |
| CN208996703U (en) * | 2018-07-10 | 2019-06-18 | 中石化石油工程技术服务有限公司 | A kind of Multilateral Wells coiled tubing guide device |
| CN113279713A (en) * | 2020-02-19 | 2021-08-20 | 中国石油化工股份有限公司 | Branch window supporting device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102418478B (en) | Operation method of hollow guider by using multilateral well windowing sidetrack drilling | |
| CN103321584B (en) | A kind of with brill instrument drill collar room machine connecting structure for electrical equipment | |
| CN114412375A (en) | Well hole connector for branch well | |
| CN211308160U (en) | Trailer rod | |
| CN206601256U (en) | Soil sample sampler | |
| CN113756737B (en) | Oil pipe hanger device for shallow water underwater Christmas tree | |
| CN214576815U (en) | Drilling rod convenient to adjust length | |
| CN211954739U (en) | Sampling tool for concrete drilling core-drilling machine | |
| CN2539834Y (en) | Fast joint for water string | |
| CN207634052U (en) | Underwater wellhead specific purpose tool | |
| CN213391969U (en) | Novel down-the-hole hammer impacter and drill bit connector | |
| CN212105767U (en) | Auxiliary positioning mechanism for drilling machine | |
| CN217841610U (en) | Fast drilling bridge plug | |
| CN215169827U (en) | Telescopic device of breaking out of multi-functional inclined shaft workover rig | |
| CN114458198B (en) | Large-size tail pipe hanging and feeding tool and using method thereof | |
| CN217274862U (en) | Easy-to-screw-joint structure for fastening panel shell and bottom shell of water heater | |
| CN217841561U (en) | Drill rod rubber centralizing sleeve for petroleum drilling machine | |
| CN211819243U (en) | Guide drill bit for horizontal directional drilling pipe-laying drilling machine | |
| CN219045399U (en) | Centralizer for petroleum exploitation | |
| CN219910676U (en) | Safety joint for oilfield drilling | |
| CN214423966U (en) | Anti-slip device of overhanging scaffold | |
| CN211053157U (en) | Hinge hole digger | |
| CN220769364U (en) | Coal mine drilling grouting sleeve lowering device | |
| CN212803086U (en) | High-efficiency spiral drill rod | |
| CN215949387U (en) | Anti-sticking's sleeve pipe coupling |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220429 |
|
| RJ01 | Rejection of invention patent application after publication |