CN112431558A - Inner rotation backwashing oil pipe nipple device - Google Patents
Inner rotation backwashing oil pipe nipple device Download PDFInfo
- Publication number
- CN112431558A CN112431558A CN202011435510.3A CN202011435510A CN112431558A CN 112431558 A CN112431558 A CN 112431558A CN 202011435510 A CN202011435510 A CN 202011435510A CN 112431558 A CN112431558 A CN 112431558A
- Authority
- CN
- China
- Prior art keywords
- pipe string
- joint device
- protective cover
- short joint
- annular protective
- 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
- 238000011001 backwashing Methods 0.000 title claims abstract description 10
- 210000002445 nipple Anatomy 0.000 title description 9
- 230000001681 protective effect Effects 0.000 claims abstract description 21
- 238000000576 coating method Methods 0.000 claims description 17
- 239000011248 coating agent Substances 0.000 claims description 15
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 238000005260 corrosion Methods 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 101150023545 gel1 gene Proteins 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims 1
- 229910052725 zinc Inorganic materials 0.000 claims 1
- 239000011701 zinc Substances 0.000 claims 1
- 230000002441 reversible effect Effects 0.000 abstract description 18
- 238000010276 construction Methods 0.000 abstract description 5
- 238000011010 flushing procedure Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 239000004576 sand Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 238000003801 milling Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/001—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor specially adapted for underwater drilling
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
本发明公开一种内旋转反洗油管短节装置，包括内层管柱，所述内层管柱外侧套接有外层套管，所述内层管柱的两端分别伸出所述外层套管的两端，所述外层套管的两端内侧均通过轴承套接在所述内层管柱的外侧，所述轴承的外侧上设有环形保护盖，所述环形保护盖的内环与所述内层管柱的外表面抵接，所述环形保护盖的外环与所述外层套管的内侧固定连接。本发明的短接装置能够实现井筒反循环、井下工具正旋转的作用，使管柱具有边旋转边反循环冲洗功能，解决了现场存在边旋转边反循环的施工工艺难题。
The invention discloses an inner rotating backwashing oil pipe short joint device, which comprises an inner layer pipe string, an outer layer casing is sleeved on the outer side of the inner layer pipe string, and both ends of the inner layer pipe string respectively protrude from the outer layer. Both ends of the layer casing, the inner sides of both ends of the outer casing are sleeved on the outer side of the inner layer pipe string through a bearing, and an annular protective cover is provided on the outer side of the bearing, and the annular protective cover is The inner ring is in contact with the outer surface of the inner layer pipe string, and the outer ring of the annular protective cover is fixedly connected with the inner side of the outer layer sleeve. The shorting device of the invention can realize the functions of reverse circulation of the wellbore and forward rotation of the downhole tool, so that the pipe string has the function of reverse circulation and flushing while rotating, and solves the construction technology problem of reverse circulation while rotating on site.
Description
Technical Field
The invention relates to a workover tool, in particular to an inner rotation backwashing oil pipe nipple device.
Background
In the process of well workover of an offshore platform, a large amount of sand is produced in a shaft, a circulation pipeline is required to be connected, a universal blowout preventer is required to be closed, then reverse circulation well flushing is carried out, and a pipe column is required to additionally have a rotation function in order to achieve a better sand flushing effect at the bottom of a well; in the process of grinding, sleeving and milling in overhaul operation, in order to enable the workover fluid to better carry chips to a wellhead, the tubular column is also required to have the function of reverse circulation flushing while the tubular column is rotatably ground and milled. Because the annular space sectional area of present tubular column is far more than the tubular column sectional area, it is effectual that just circulate to wash the effect under the same discharge capacity does not have the reverse circulation, but the present equipment in market can only satisfy the tubular column and rotate the positive circulation well-flushing simultaneously. For example, chinese patent No. CN106368630B, publication No. 2019.3.22: a sand washing method and a special tool can only meet the requirement that a pipe column rotates and a well is washed in a positive circulation mode, so that the pipe column with the functions of rotating and washing in a reverse circulation mode is needed in order to better carry dust sand or debris to a well mouth in the process of large-amount sand production, overhaul operation grinding, sleeving and milling of a shaft, and the construction process problem that the rotation and the reverse circulation are carried out on the site is solved.
Disclosure of Invention
The invention designs an internal rotation backwashing oil pipe nipple device, which can realize the effects of reverse circulation of a shaft and positive rotation of an underground tool, so that a pipe column has the functions of washing while rotating and reverse circulation, and the construction process problem of rotating while reverse circulation existing on site is solved.
The technical scheme of the invention is as follows:
the inner rotation backwashing oil pipe nipple device comprises an inner pipe column, wherein an outer sleeve is sleeved on the outer side of the inner pipe column, two ends of the inner pipe column extend out of two ends of the outer sleeve respectively, the inner sides of two ends of the outer sleeve are sleeved on the outer side of the inner pipe column through bearings, an annular protective cover is arranged on the outer side of each bearing, an inner ring of the annular protective cover is abutted to the outer surface of the inner pipe column, and an outer ring of the annular protective cover is fixedly connected with the inner side of the outer sleeve.
The both ends of inlayer tubular column all external other tubular columns, and outer pipe box is locked by universal preventer, and outer sleeve pipe can rotate inlayer tubular column relatively through the bearing, and at this moment, can make the relative outer pipe box rotary motion of inlayer tubular column under the effect of the top drive of rig floor or carousel, realize pit shaft reverse circulation, downhole tool is just rotatory, makes the tubular column have the limit rotation limit reverse circulation and washes the function. The annular protective covers on the two end faces of the inner-layer pipe column limit the axial movement direction of the inner-layer pipe column, and the situation that debris falls into the bearing to influence relative rotation can be avoided.
Furthermore, both ends of the inner-layer pipe column are provided with female couplings. The two ends of the inner-layer pipe column are connected with other external pipe columns through a female coupling.
Furthermore, the button type of the female coupling comprises common button types such as EU, NU or BGT2 and the like, and is consistent with the button type of the external pipe column.
Furthermore, a sealing rubber ring is arranged between the annular protective cover and the bearing, so that the sealing property between the inner-layer pipe column and the outer-layer sleeve is enhanced, and the bearing is prevented from being influenced by external debris.
Furthermore, the annular protective cover and the inner side of the outer sleeve are welded into a whole, so that the overall structural strength of the outer sleeve is enhanced, and the operation requirement is met.
Further, the thickness of the inner-layer pipe column is 5mm-10 mm.
Further, the thickness of the outer sleeve is 5mm-10 mm.
Further, the inner-layer pipe column and the outer-layer casing are both made of stainless steel.
Adopt the stainless steel of suitable thickness to make inlayer tubular column and outer sleeve pipe, reinforcing structural strength satisfies the extrusion strength when the operation, and the material of selecting is wear-resistant.
Further, the surfaces of the inner layer pipe column and the outer layer pipe column are both electroplated with metal anti-corrosion coatings.
Further, the metal anti-corrosion coating comprises a zinc-plated coating, a tin-plated coating or a nickel-plated coating.
The surfaces of the inner layer pipe column and the outer layer pipe column are coated with metal anti-corrosion coatings, so that the anti-corrosion performance is enhanced, and the service life is prolonged.
The invention has the beneficial effects that:
according to the structure of the internal rotation backwashing oil pipe nipple device, the universal blowout preventer can lock the outer casing pipe of the device, and the inner pipe column can rotate relative to the outer casing pipe through the bearings at the two ends, so that the inner pipe column can rotate under the action of top drive or a turntable of a drill floor, and reverse circulation of a shaft and positive rotation of a downhole tool can be realized. The invention solves the problem that dust sand and debris are returned to the well mouth in the process of producing a large amount of sand in a shaft or performing overhaul operation on grinding, sleeving and milling; the problem of the on-site construction process that the rotation and the reverse circulation are carried out simultaneously is solved, accidents such as pipe column blockage and drill clamping are avoided, the operation timeliness is improved, and the purposes of cost reduction and efficiency improvement are achieved.
Drawings
FIG. 1 is a schematic structural diagram of a pipe nipple device of the present invention;
FIG. 2 is a schematic cross-sectional view of FIG. 1;
FIG. 3 is a schematic top view of FIG. 1;
in the figure: the pipe comprises an inner layer pipe column 1, a female coupling 101, an outer layer sleeve 2, a bearing 3, an annular protective cover 4 and a sealing rubber ring 5.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
Example 1:
as shown in fig. 1-3, an inner rotation backwashing oil pipe nipple device comprises an inner pipe column 1, an outer casing pipe 2 is sleeved outside the inner pipe column 1, two ends of the inner pipe column 1 respectively extend out of two ends of the outer casing pipe 2, two ends of the inner pipe column 1 are both female couplings 101, two ends of the outer casing pipe 2 are both sleeved outside the inner pipe column 1 through bearings 3, an annular protective cover 4 is arranged on the outer side of each bearing 3, an inner ring of the annular protective cover 4 is abutted to the outer surface of the inner pipe column 1, and an outer ring of the annular protective cover 4 is fixedly connected with the inner side of the outer casing pipe 2.
In the present embodiment, the profile of the box 101 includes EU, NU or BGT2, which are common profiles, and is consistent with the profile of the external pipe string.
In this embodiment, a sealing rubber ring 5 is further disposed between the annular protective cover 4 and the bearing 3, so as to enhance the sealing property between the inner-layer tubular column 1 and the outer-layer casing 2, and prevent the bearing from being affected by external debris.
In this embodiment, the annular protection cover 4 is welded with the inner side of the outer casing 2 into a whole, so that the overall structural strength of the outer casing 2 is enhanced, and the operation requirement is met.
In the embodiment, the annular protective covers 4 and the sealing rubber rings 5 at the two ends limit the movement direction of the inner-layer tubular column 1, and ensure that the inner-layer tubular column 1 can only rotate along the axis.
In the embodiment, the thickness of the inner layer pipe column 1 and the outer layer casing 2 is 5mm-10mm, and the inner layer pipe column and the outer layer casing are made of stainless steel, and the preferred thickness is 7 mm. Adopt the stainless steel of suitable thickness to make inlayer tubular column 1 and outer sleeve pipe 2, reinforcing structural strength satisfies the extrusion strength when the operation, and the material of selecting is resistant to wearing.
In this embodiment, the surface of inlayer tubular column 1 and outer tubular column 2 has all been electroplated with metal anticorrosive coating, and metal anticorrosive coating includes zinc-plated coating, tin-plated coating or nickel plating coating etc. scribbles metal anticorrosive coating on the surface of inlayer tubular column 1 and outer tubular column 2, reinforcing corrosion protection and longevity.
In the embodiment, the outer casing 1, the sealing rubber ring 5 and the inner pipe column 2 have strong abrasion resistance, and meet the field requirements.
The internal rotation backwashing oil pipe nipple device mainly comprises the following use steps:
(1) the lower end female coupling 101 of the inner-layer pipe column 1 is connected with a pipe column of a lower oil pipe or other pipe columns of the same-buckling type, and the upper-buckling torque meets the API standard.
(2) The upper end female coupling 101 of the inner tubular column 2 is finally connected to a mud pit by connecting with other tubular columns of the same-buckle type.
(3) And (3) placing the outer casing 2 of the device down at the rubber core of the universal blowout preventer, closing the universal blowout preventer, and starting reverse circulation well washing after the pressure test is qualified.
(4) The inner pipe column 1 is rotated at a reasonable rotating speed by utilizing a drill floor turntable or a top drive, so that the inner pipe column 1 rotates relative to the outer casing 2, and the underground tool is driven to rotate.
The outer casing 2 of the device can be locked by the universal blowout preventer, and the inner pipe column 1 can rotate relative to the outer casing 2 through the bearings 3 at the two ends, so that the inner pipe column 1 can rotate under the action of top drive or a rotary table of a drill floor, and reverse circulation of a shaft and positive rotation of a downhole tool can be realized. The invention solves the problem that dust sand and debris are returned to the well mouth in the process of producing a large amount of sand in a shaft or performing overhaul operation on grinding, sleeving and milling; the problem of the on-site construction process that the rotation and the reverse circulation are carried out simultaneously is solved, accidents such as pipe column blockage and drill clamping are avoided, the operation timeliness is improved, and the purposes of cost reduction and efficiency improvement are achieved.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011435510.3A CN112431558A (en) | 2020-12-10 | 2020-12-10 | Inner rotation backwashing oil pipe nipple device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011435510.3A CN112431558A (en) | 2020-12-10 | 2020-12-10 | Inner rotation backwashing oil pipe nipple device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112431558A true CN112431558A (en) | 2021-03-02 |
Family
ID=74690966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011435510.3A Pending CN112431558A (en) | 2020-12-10 | 2020-12-10 | Inner rotation backwashing oil pipe nipple device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112431558A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7007753B2 (en) * | 2002-09-09 | 2006-03-07 | Mako Rentals, Inc. | Top drive swivel apparatus and method |
| DE102005012751A1 (en) * | 2005-03-19 | 2006-09-21 | Contitech Vibration Control Gmbh | Joint bearing bush for motor vehicle`s axle link, has inner vulcanized rubber layer comprising smaller rigidity than outer vulcanized rubber layer, and stop rings provided on both ends of stable cylindrical inner part |
| CN101092869A (en) * | 2007-07-23 | 2007-12-26 | 辽河石油勘探局 | Inverse circular sand washing adapter connector in rotary type of twin pipe |
| CN103573226A (en) * | 2012-07-24 | 2014-02-12 | 思达斯易能源技术(集团)有限公司 | Well completion sand prevention process and sand prevention strings thereof |
| CN105391021A (en) * | 2014-09-05 | 2016-03-09 | 天津市汇亚塑业科技有限公司 | Telescoping cable protection pipe |
| CN210105787U (en) * | 2019-01-31 | 2020-02-21 | 中石化石油工程技术服务有限公司 | Reverse circulation drilling top-injection side-discharging device |
| CN210372379U (en) * | 2019-09-01 | 2020-04-21 | 济宁百优特管业有限公司 | Anti-seepage static-conducting double-layer composite pipe with sheath |
| CN111456649A (en) * | 2020-04-10 | 2020-07-28 | 刘超 | Special casing pipe nipple for oil well |
| CN213953532U (en) * | 2020-12-10 | 2021-08-13 | 中国海洋石油集团有限公司 | Inner rotation backwashing oil pipe nipple device |
-
2020
- 2020-12-10 CN CN202011435510.3A patent/CN112431558A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7007753B2 (en) * | 2002-09-09 | 2006-03-07 | Mako Rentals, Inc. | Top drive swivel apparatus and method |
| DE102005012751A1 (en) * | 2005-03-19 | 2006-09-21 | Contitech Vibration Control Gmbh | Joint bearing bush for motor vehicle`s axle link, has inner vulcanized rubber layer comprising smaller rigidity than outer vulcanized rubber layer, and stop rings provided on both ends of stable cylindrical inner part |
| CN101092869A (en) * | 2007-07-23 | 2007-12-26 | 辽河石油勘探局 | Inverse circular sand washing adapter connector in rotary type of twin pipe |
| CN103573226A (en) * | 2012-07-24 | 2014-02-12 | 思达斯易能源技术(集团)有限公司 | Well completion sand prevention process and sand prevention strings thereof |
| CN105391021A (en) * | 2014-09-05 | 2016-03-09 | 天津市汇亚塑业科技有限公司 | Telescoping cable protection pipe |
| CN210105787U (en) * | 2019-01-31 | 2020-02-21 | 中石化石油工程技术服务有限公司 | Reverse circulation drilling top-injection side-discharging device |
| CN210372379U (en) * | 2019-09-01 | 2020-04-21 | 济宁百优特管业有限公司 | Anti-seepage static-conducting double-layer composite pipe with sheath |
| CN111456649A (en) * | 2020-04-10 | 2020-07-28 | 刘超 | Special casing pipe nipple for oil well |
| CN213953532U (en) * | 2020-12-10 | 2021-08-13 | 中国海洋石油集团有限公司 | Inner rotation backwashing oil pipe nipple device |
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