CN210217669U - Rotary device for well completion of branch well - Google Patents
Rotary device for well completion of branch well Download PDFInfo
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- CN210217669U CN210217669U CN201920208442.3U CN201920208442U CN210217669U CN 210217669 U CN210217669 U CN 210217669U CN 201920208442 U CN201920208442 U CN 201920208442U CN 210217669 U CN210217669 U CN 210217669U
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- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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Abstract
The utility model relates to a rotary device is used in multilateral well completion. Comprises a central tube, an upper shell, a middle shell, a lower shell, a lock sleeve and shear pins. The upper shell, the middle shell and the lower shell are sequentially connected together through threads, and a cavity and a first trapezoid-shaped groove are formed inside the upper shell, the middle shell and the lower shell; the inner surface of the middle shell is provided with a second trapezoidal groove along the circumferential direction; the outer surface of the middle part of the central tube is provided with an annular outer key along the radial direction in a protruding way, and the lower part of the central tube is divided into a plurality of rectangular grooves; the protrusion at the lower end of the central tube is in limit fit with the first trapezoidal groove and the second trapezoidal groove respectively, and the upper end of the central tube extends out of the cavity; the lock sleeve is connected with the lower shell through the shear pin, the upper end of the lock sleeve extends into the central tube, and the lower end of the lock sleeve extends into the lower shell. The utility model discloses connect between wall-hanging hanger and lateral well completion tubular column, when wall-hanging hanger is sat and is hung, can make wall-hanging hanger be independent of lateral well completion tubular column and rotatory to avoid damaging the casing of well completion tubular column and detain.
Description
Technical Field
The utility model relates to a rotary device in the downhole tool field, especially rotary device that the multilateral well was used completely.
Background
The wall-mounted hanger is used as a mechanical support for the main borehole and the branch borehole and plays a role in communicating the main borehole with the branch borehole. The upper part of the main well is connected with a main well hanger, the lower part of the main well is connected with a branch well completion pipe column, and a hook at the middle part is hung on a casing pipe of the main well for windowing. When the wall-mounted hanger is hung, a pipe string consisting of the main well hanger, the wall-mounted hanger and a branch well completion pipe string needs to be placed at a preset position through a special feeding tool, and then the hanging of the wall-mounted hanger is hung on a casing pipe of a main well window through rotating the pipe string and adjusting the angle. Because the lower part of the wall-mounted hanger is connected with the completion pipe string of the branch well, the casing buckle in the completion pipe string is easily damaged due to large friction between the completion pipe string and the open well wall in the rotation adjustment process of the pipe string.
SUMMERY OF THE UTILITY MODEL
When hanging in order to solve wall-hanging hanger seat, the fragile problem is detained to well completion tubular column's sleeve pipe in the lateral borehole, the utility model provides a rotary device that lateral borehole was used completely.
The technical scheme of the utility model:
the utility model provides a rotary device for well completion of multilateral well, includes center tube, last casing, well casing, lower casing, lock sleeve and shear pin, wherein: the upper shell, the middle shell and the lower shell are sequentially connected together, and a cavity and a first trapezoidal groove are formed inside the upper shell, the middle shell and the lower shell; the inner surface of the middle shell is provided with a second trapezoidal groove along the circumferential direction; the central tube and the lock sleeve are arranged in the cavity; the lower end part of the central tube is uniformly divided into a plurality of rectangular grooves along the axial direction, the protrusions at the lower end of the central tube are respectively in limit fit with the first trapezoidal groove and the second trapezoidal groove, and the upper end of the central tube extends out of the cavity of the upper shell; the lock sleeve is connected with the lower shell through the shear pin, the upper end of the lock sleeve extends into the central tube, and the lower end of the lock sleeve extends into the lower shell; the lock sleeve is in a circular tube shape, the outer surface of the middle section is axially provided with steps, the upper end face of each step and the inner step of the middle shell form a hydraulic cavity, the lock sleeve close to the hydraulic cavity is radially provided with a pressure transmission hole communicated with the inside and the outside of the lock sleeve, and the lower end face of the step of the lock sleeve and the inner step of the lower shell form axial blocking matching.
The above scheme further comprises:
the outer surface of the middle part of the central tube is provided with a circular ring-shaped outer key along the radial direction, the inner surface of the middle part of the upper shell is provided with a circular ring-shaped inner key along the radial direction, and the circular ring-shaped outer key and the circular ring-shaped inner key form axial sliding and circumferential limiting matching.
The pressure transmission holes are uniformly distributed on the lock sleeve.
The protrusions at the lower end of the central tube are circumferentially distributed along the rectangular groove at the lower end of the central tube, and the shape of the axial section of the central tube is trapezoidal.
The upper end of the central tube is provided with threads; the number of the circular ring-shaped external keys of the central tube and the circular ring-shaped internal keys of the upper shell are 1 or more.
The utility model has the advantages that: the device is connected between the wall-mounted hanger and the completion string of the branch well, and when the wall-mounted hanger is hung, the device can enable the wall-mounted hanger to rotate independently of the completion string of the branch well, so that a casing buckle of the completion string is prevented from being damaged.
Drawings
Fig. 1 is a schematic structural diagram of a rotary device for branch well completion according to the present invention;
FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken at B-B of FIG. 1;
FIG. 4 is a cross-sectional view taken at C-C of FIG. 1;
FIG. 5 is a cross-sectional view taken at D-D of FIG. 1;
FIG. 6 is a schematic structural view of the rotary apparatus for multilateral wellbore completion in an unlocked state;
in the figure, 1, a central pipe, 2, a Y-shaped sealing ring, 3, an upper shell, 4, an annular outer key, 5, 6, 13, 15 and 19, an O-shaped sealing ring, 7, an annular inner key, 8, a first trapezoidal groove, 9, a protrusion, 10, a second trapezoidal groove, 11, a middle shell, 12, a pressure transfer hole, 14, a lock sleeve, 16, a lower shell, 17, a hydraulic cavity and 18 shear pins.
Detailed Description
The following is a more detailed description of the embodiments with reference to the drawings.
Example 1
A rotary device for completion of a branch well hole comprises a central tube 1, an upper shell 3, a middle shell 11, a lower shell 16, a lock sleeve 14 and a shear pin 18, wherein: the upper shell 3, the middle shell 11 and the lower shell 16 are sequentially connected together, and a cavity and a first trapezoidal groove 8 are formed inside; the inner surface of the middle shell 11 is provided with a second trapezoidal groove 10 along the circumferential direction; the central tube 1 and the lock sleeve 14 are arranged in the cavity; the lower end part of the central tube 1 is equally divided into a plurality of rectangular grooves along the axial direction, the protrusion 9 at the lower end of the central tube 1 forms limit fit with the first trapezoidal groove 8 and the second trapezoidal groove 10 respectively, and the upper end of the central tube 1 extends out of the cavity of the upper shell 3; the lock sleeve 14 is connected with the lower shell 16 through a shear pin 18, the upper end of the lock sleeve extends into the central tube 1, and the lower end of the lock sleeve extends into the lower shell 16; the lock sleeve 14 is in a circular tube shape, the outer surface of the middle section of the lock sleeve is provided with steps along the axial direction, the upper end face of each step and the inner step of the middle shell 11 form a hydraulic cavity 17, the lock sleeve 14 close to the hydraulic cavity is radially provided with a pressure transfer hole 12 communicating the inside and the outside of the lock sleeve 14, and the lower end face of the step of the lock sleeve 14 and the inner step of the lower shell 16 form axial blocking matching.
Example 2
The method further comprises the following steps based on the embodiment 1:
the outer surface of the middle part of the central tube 1 is provided with a circular ring-shaped outer key 4 along the radial direction, the inner surface of the middle part of the upper shell 3 is provided with a circular ring-shaped inner key 7 along the radial direction, and the circular ring-shaped outer key 4 and the circular ring-shaped inner key 7 form axial sliding and circumferential limiting matching.
The pressure transmission holes 12 are uniformly distributed on the lock sleeve 14.
The protrusions 9 at the lower end of the central tube 1 are circumferentially distributed along the rectangular groove at the lower end of the central tube 1, and the cross section of the protrusions along the axial direction of the central tube 1 is trapezoidal.
The upper end of the central tube 1 is provided with threads; the number of the circular ring-shaped external keys 4 of the central tube 1 and the circular ring-shaped internal keys 7 of the upper shell 3 are 1 or more
Exemplary embodiment 3
Fig. 1 is a rotary device for completion of a branch well hole, which comprises a central tube 1, an upper shell 3, a middle shell 11, a lower shell 16, a lock sleeve 14, a shear pin 18, a Y-shaped sealing ring 2, and O-shaped sealing rings 5, 6, 13, 15 and 19. The upper shell 3, the middle shell 11 and the lower shell 16 are sequentially connected together through threads, and a cavity and a first trapezoidal groove 8 are formed inside; an O-shaped sealing ring 5 is arranged at the joint of the upper shell 3 and the middle shell 11; an O-shaped sealing ring 19 is arranged at the joint of the middle shell 11 and the lower shell 16; a second trapezoidal groove 10 is formed in the inner surface of the middle shell 11 along the circumferential direction; the central tube 1 and the lock sleeve 14 are arranged in the cavity; the protrusion 9 at the lower end of the central tube 1 is positioned in the second trapezoidal groove 10, and the upper end of the central tube extends out of the cavity of the upper shell 3 and is provided with threads; the lock sleeve 14 is in a round tube shape, the outer surface of the lock sleeve is in a convex shape along the axial direction, the lock sleeve is connected with the lower shell 16 through a shear pin 18, the upper end of the lock sleeve extends into the central tube 1, and the lower end of the lock sleeve extends into the lower shell 16; o-shaped sealing rings 6 and 13 are arranged between the lock sleeve 14 and the middle shell 11, and an O-shaped sealing ring 15 is arranged between the lock sleeve and the lower shell 16.
Fig. 2 shows that the middle outer surface of the central tube 1 is provided with 1 annular outer key 4 protruding along the radial direction, the middle inner surface of the upper shell 3 is provided with 1 annular inner key 7 protruding along the radial direction, and the annular outer key 4 and the annular inner key 7 are in a meshing state.
FIG. 3 shows the lower part of the central tube 1 as a positive integernEach rectangular groove is divided inton+1 part.
Fig. 4 shows that 4 pressure transmission holes 12 communicating the inside and the outside of the lock sleeve 14 are arranged close to the shoulder of the lock sleeve 14 along the circumferential direction.
Fig. 5 shows the lower end of the lock sleeve 14 connected to the lower housing 16 by 4 shear pins 18.
Fig. 6 is a schematic view of a rotary apparatus for multilateral wellbore completion in an unlocked state. The shear pin 18 is sheared, the lower shoulder of the lock sleeve 14 contacts the lower housing 16, the protrusion 9 at the lower end of the center tube 1 is positioned in the first trapezoidal groove 8, and the annular outer key 4 is separated from the annular inner key 7. The central tube 1 and its upper string can be rotated independently of the lower string of the rotating device.
The rotary device for the completion of the lateral well hole is used in the completion process of the lateral well hole, and the pipe string structure from top to bottom is as follows: drill pipe + running tool + main hole hanger + wall-hanging hanger + a swivel for multilateral well completion + multilateral well completion string (containing wellbore isolation valve). During construction, the pipe string is slowly lowered into the well, and when the wall-mounted hanger is lowered to the joint of the main well and the branch well, the pipe string is stopped from being lowered. And a pressure-building ball is put into the pipe string from the wellhead, the wellhead is pumped and pressed, when the pressure-building ball reaches the shaft isolating valve, the pressure-building ball seals the inside and the outside of the pipe string, the pressure in the pipe string is raised, and hydraulic force is transmitted into the hydraulic cavity 17 through the pressure transmitting hole 12. When the pressure reaches a certain value, the shear pin 18 is sheared and the lock sleeve 14 moves downward until the lower step of the lock sleeve 14 comes into contact with the lower housing 16. Then, the well head stops pumping, the pipe column is lifted, and after the lower end protrusion 9 of the central pipe 1 moves from the second trapezoidal groove 10 to the first trapezoidal groove 8, the well head hanging weight is increased, and the lifting of the pipe column is stopped. At this time, as shown in fig. 6, the rotating device for completion of a lateral wellbore is in an unlocked state, the string above the central tube 1 can rotate independently from the string below the rotating device for completion of a lateral wellbore, so that the wall-mounted hanger can be conveniently hung, and the damage of a casing buckle of the completion string in the lateral wellbore can be avoided.
Claims (5)
1. The utility model provides a rotary device for well completion of branch well, includes center tube (1), goes up casing (3), well casing (11), lower casing (16), lock sleeve (14) and shear pin (18), characterized by: the upper shell (3), the middle shell (11) and the lower shell (16) are sequentially connected together, and a cavity and a first trapezoid-shaped groove (8) are formed inside; the inner surface of the middle shell (11) is provided with a second trapezoidal groove (10) along the circumferential direction; the central tube (1) and the lock sleeve (14) are arranged in the cavity; the lower end part of the central tube (1) is uniformly divided into a plurality of rectangular grooves along the axial direction, the protrusions (9) at the lower end of the central tube (1) are respectively in limit fit with the first trapezoidal groove (8) and the second trapezoidal groove (10), and the upper end of the central tube (1) extends out of the cavity of the upper shell (3); the lock sleeve (14) is connected with the lower shell (16) through a shear pin (18), the upper end of the lock sleeve extends into the central tube (1), and the lower end of the lock sleeve extends into the lower shell (16); the lock sleeve (14) is in a circular tube shape, the outer surface of the middle section of the lock sleeve is axially provided with steps, the upper end surface of each step and the inner step of the middle shell (11) form a hydraulic cavity (17), the lock sleeve (14) close to the hydraulic cavity is radially provided with a pressure transfer hole (12) communicated with the inside and the outside of the lock sleeve (14), and the lower end surface of the step of the lock sleeve (14) and the inner step of the lower shell (16) form axial blocking matching.
2. The lateral wellbore completion rotary apparatus of claim 1, wherein: the outer surface of the middle part of the central tube (1) is provided with a circular ring-shaped outer key (4) along the radial direction, the inner surface of the middle part of the upper shell (3) is provided with a circular ring-shaped inner key (7) along the radial direction, and the circular ring-shaped outer key (4) and the circular ring-shaped inner key (7) form axial sliding and circumferential limiting fit.
3. A rotary apparatus for use in multilateral wellbore completion according to claim 1 or 2, wherein: the pressure transmission holes (12) are uniformly distributed on the lock sleeve (14).
4. The lateral wellbore completion rotary apparatus of claim 3, wherein: the protrusions (9) at the lower end of the central tube (1) are circumferentially distributed along the rectangular groove at the lower end of the central tube (1), and the axial section of the protrusions along the central tube (1) is trapezoidal.
5. The lateral wellbore completion rotary apparatus of claim 4, wherein: the upper end of the central tube (1) is provided with threads; the number of the annular outer keys (4) of the central tube (1) and the number of the annular inner keys (7) of the upper shell (3) are respectively 1 or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920208442.3U CN210217669U (en) | 2019-02-19 | 2019-02-19 | Rotary device for well completion of branch well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920208442.3U CN210217669U (en) | 2019-02-19 | 2019-02-19 | Rotary device for well completion of branch well |
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| Publication Number | Publication Date |
|---|---|
| CN210217669U true CN210217669U (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920208442.3U Active CN210217669U (en) | 2019-02-19 | 2019-02-19 | Rotary device for well completion of branch well |
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| Country | Link |
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| CN (1) | CN210217669U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878021A (en) * | 2020-07-27 | 2020-11-03 | 中海石油(中国)有限公司 | Multilateral well tool system and method |
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2019
- 2019-02-19 CN CN201920208442.3U patent/CN210217669U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878021A (en) * | 2020-07-27 | 2020-11-03 | 中海石油(中国)有限公司 | Multilateral well tool system and method |
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Effective date of registration: 20240119 Address after: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: Sinopec Petroleum Engineering Technology Service Co.,Ltd. Patentee after: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Patentee after: SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD. DRILLING TECHNOLOGY Research Institute Address before: 100101 Beichen West Road, Chaoyang District, Beijing 8 Beichen world center, block A 703. Patentee before: SINOPEC OILFIELD SERVICE Corp. Patentee before: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Patentee before: SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD. DRILLING TECHNOLOGY Research Institute |