CN201095974Y - Uniflow valve throwing in and fishing out by steel wire operation - Google Patents
Uniflow valve throwing in and fishing out by steel wire operation Download PDFInfo
- Publication number
- CN201095974Y CN201095974Y CNU2007201739393U CN200720173939U CN201095974Y CN 201095974 Y CN201095974 Y CN 201095974Y CN U2007201739393 U CNU2007201739393 U CN U2007201739393U CN 200720173939 U CN200720173939 U CN 200720173939U CN 201095974 Y CN201095974 Y CN 201095974Y
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- ball
- mandrel
- seat
- sleeve
- steel wire
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- Expired - Fee Related
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Abstract
A uniflow valve which can be threw in and fished out by the operation of steel wire is applied for the technology of the oil field downhole operation. The utility model is characterized in that a refloatation head is provided with a central hole along the axial direction, the upper end of the refloatation head is provided with a refloatation step, and the outer wall arranged at the lower end of the refloatation head is provided with a by-pass port. The lower end of the refloatation head is connected with the upper end of a sleeve by screw thread. The sleeve is internally provided with a balance mandrel, and a through hole is opened on the wall. Shear pin fixation is adopted between the balance mandrel and the sleeve. The lower end of the balance mandrel is connected with a sealing mandrel by screw thread. The outer wall of the sealing mandrel is sheathed with a sealing group. The lower end of the sealing mandrel is connected with a lower body by screw thread. The inner wall at the lower end of the fishing head is fixed with a ball seat, the conical surface of which is provided with a steel ball. The uniflow valve has the effects that: when in the process of tripping in of the uniflow valve, the upper pressure and the lower pressure are balanced, when an oil pipe is needed to be obturated, a landing nipple is threw in successfully, after being threw in, the landing nipple bears higher upper differential pressure. The uniflow valve can be fished out successfully by the operation of the steel wire. The sealing group comprises a V-shaped packing set which has higher strength and reliable sealing, so as to ensure the oil pipe to be plugged.
Description
Technical field
The utility model relates to the oilfield downhole operation technical field, and particularly a kind of down-hole ball-and-seat is the ball-and-seat of installing on the enclosed tubing string of a kind of oil gas field down-hole that passes through the steel wire input and pull out that uses as ball-and-seat in the oil pipe bottom.
Background technology
At present, employed ball-and-seat mostly is and is connected with oil pipe and together is lowered to the ball-and-seat that airtight oil pipe is carried out in the precalculated position with oil pipe in the oil gas field production.
The Chinese patent notification number is CN2687324Y, and a kind of ball formula ball-and-seat is provided.Mainly solve the problem that existing rod-type ball-and-seat easily stops up lower end tubing string latus rectum delivery hole.Have that the bottom is connected with supporter in the valve body of step hole, the upper and lower side of support body wall that step hole is arranged be respectively to having axial gap and flowing hole, is equipped with spring, T-shaped ball seat in the hole successively and touches the valve ball of step hole mutually.Have that well liquid is unobstructed, switch reaches characteristic of simple structure flexibly.The Chinese patent notification number is CN2725516Y, and a kind of inclined to one side hole ball-and-seat is provided.
But, do not rise go into the well under the situation of tubing string, existing oil well ball-and-seat can not be realized dropping into and pulling out.
Summary of the invention
The purpose of this utility model is: provide a kind of and be used by steel wire operation input and the ball-and-seat of pulling out and special tool landing nipple, do not rise go into the well under the situation of tubing string, realize oil well ball-and-seat input and pull out.Be mainly used in closed gas lift string, be installed in the balanced type ball-and-seat that use as ball-and-seat the oil pipe bottom, or after treating that pressure is set up, oil pipe is tested.
The technical solution of the utility model is: mainly be made up of fishing head, steel ball, ball seat, sleeve, balance mandrel, shear pin, sealing mandrel, " V " shape packing, support ring, baffle ring, lower body by steel wire operation input and the ball-and-seat pulled out.Fishing head has axial center hole, and there is the salvaging step fishing head upper end, and the lower end outer wall of fishing head has by-pass prot.The fishing head lower end is threaded with the sleeve upper end.The balance mandrel is arranged in sleeve, and the balance mandrel is cylindric, and through hole is arranged on the wall.Adopt shear pin to fix between balance mandrel and the sleeve.Screw thread is connected with the sealing mandrel in the lower end of balance mandrel.The sealing mandrel is cylindric, is with seal group on the outer wall of sealing mandrel.Lower end screw thread at the sealing mandrel is connected with lower body.On the inwall of fishing head lower end, be fixed with ball seat, a steel ball is arranged on the conical surface of ball seat.
In order to adapt to oil field down-hole oil tube specification, the maximum outside diameter of sleeve is between 40-60mm.
In order to improve sealing, on the connecting thread of fishing head and sleeve, round section joint ring is arranged, between fishing head and ball seat, round section joint ring is arranged.
Described seal group is made up of baffle ring, " V " type packing and support ring, in the middle of " V " type packing support ring is arranged, and there is baffle ring at the two ends of " V " type packing.
The beneficial effects of the utility model are: can play the effect of airtight oil pipe passage by steel wire operation input and the ball-and-seat pulled out, can knock down landing nipple smoothly when airtight oil pipe, bear higher last pressure reduction after knocking down, can pull out smoothly after work is finished.Landing nipple have ended the section cooperate with the seal section of ball-and-seat, the ball-and-seat retaining ledge stops it to move downward, thereby realize location down, seal group is put the pipe nipple seal section with seat and is cooperated, packing is designed to the higher reliable sealing of intensity " V " shape packing, to guarantee that oil pipe is realized shutoff, as its pressure balance on being lowered in the middle of the process of ball-and-seat, guaranteed that it knocks down landing nipple smoothly, there is fishing head the ball-and-seat upper end, can pull out by steel wire operation when pulling out, in reclaiming operation, upwards shear pin is cut off in jarring, can open by-pass prot, make pressure balance, conveniently trip out.
Description of drawings
Fig. 1 is the semi-section structural representation by steel wire operation input and the ball-and-seat pulled out.
Fig. 2 is the generalized section of balance mandrel 7.
1. fishing heads among the figure, 2. steel ball, 3. round section joint ring, 4. round section joint ring, 5. ball seat, 6. sleeve, 7. balance mandrel, 8. shear pin, 9. sealing mandrel, 10. " V " shape packing, 11. support rings, 12. baffle rings, 13. lower bodies, 14 through holes.
The specific embodiment
Embodiment 1: consult Fig. 1.With an external diameter is 56 millimeters, and total length is that 385 millimeters the ball-and-seat that passes through the steel wire operation input and pull out is an example, is elaborated.
The maximum outside diameter of sleeve 6 is at 56 millimeters.Balance mandrel 7 is arranged in sleeve 6.Consult Fig. 1.Balance mandrel 7 is cylindric, and 4 through holes 14 are arranged on the wall, 12 millimeters of the diameter Ф of through hole 14.Consult Fig. 2.Adopt shear pin 8 fixing between balance mandrel 7 and the sleeve 6.Be connected with sealing mandrel 9 at the lower end of balance mandrel 7 screw thread.Sealing mandrel 9 is cylindric, is with seal group on the outer wall of sealing mandrel 9.Seal group is made up of baffle ring 12, " V " type packing 10 and support ring 11, in the middle of " V " type packing 10 support ring 11 is arranged, and there is baffle ring 12 at the two ends of " V " type packing 11.Lower end screw thread at sealing mandrel 9 is connected with lower body 13.On fishing head 1 lower end inwall, be fixed with a ball seat 5, a steel ball is arranged on the conical surface of ball seat 5.
Summary is by the job step of steel wire operation input and the ball-and-seat pulled out:
The utility model is by steel wire operation input and the ball-and-seat pulled out.
1, landing nipple and oil pipe are connected together is lowered into the precalculated position, for providing a fastening devices by steel wire operation input and being lowered to of ball-and-seat pulled out; When needs carry out airtight oil pipe operation, carry out operation according to the following steps;
2, this ball-and-seat is assembled, itself and delivery instrument are connected together with other aid (rope socket, weighted lever, bumper jar), prepare to go into the well.Adorn three 5-8 millimeter pins on the delivery instrument;
3, with winch wire tool string is shipped in the landing nipple, because last pressure balance can be knocked down smoothly, can directly be seated in after putting in place, after this ball-and-seat is seated in the landing nipple, jarring downwards, pin on delivery instrument shake is disconnected, on carry the delivery instrument, take out delivery instrument and above instrument; At this moment this ball-and-seat is in air-tight state, and ball-and-seat is started working, and can bear higher last pressure reduction;
4, when needs take out this ball-and-seat, be lowered to the fishing tool string with winch wire, comprise fishing tool, rope socket, weighted lever, bumper jar, catch fishing head 1 on this ball-and-seat with bailer grab on the fishing tool, upwards shear pin 8 is cut off in jarring, and balance mandrel 7 moves up, and can open the through hole 14 on the balance mandrel, make pressure balance, this ball-and-seat can take out.Finish the ball-and-seat operation process thus one time.
Claims (4)
1, a kind of by steel wire operation input and the ball-and-seat pulled out, mainly by fishing head (1), steel ball (2), ball seat (5), sleeve (6), balance mandrel (7), shear pin (8), sealing mandrel (9), " V " shape packing (10), support ring (11), baffle ring (12), lower body (13) part is formed, it is characterized in that: fishing head (1) has axial center hole, there is the salvaging step fishing head (1) upper end, the lower end outer wall of fishing head (1) has by-pass prot (15), fishing head (1) lower end is threaded with sleeve (6) upper end, balance mandrel (7) is arranged in sleeve (6), balance mandrel (7) is cylindric, through hole (14) is arranged on the wall, adopt shear pin (8) fixing between balance mandrel (7) and the sleeve (6), lower end screw thread at balance mandrel (7) is connected with sealing mandrel (9), sealing mandrel (9) is cylindric, be with seal group on the outer wall of sealing mandrel (9), lower end screw thread at sealing mandrel (9) is connected with lower body (13), on the inwall of fishing head (1) lower end, be fixed with ball seat (5), a steel ball is arranged on the conical surface of ball seat (5).
2, according to claim 1 by steel wire operation input and the ball-and-seat pulled out, it is characterized in that: the maximum outside diameter of sleeve (6) is between 40-60mm.
3, according to claim 1 by steel wire operation input and the ball-and-seat pulled out, it is characterized in that: on the connecting thread of fishing head (1) and sleeve (6), round section joint ring (3) is arranged, between fishing head (1) and ball seat (5), round section joint ring (4) is arranged.
4, according to claim 1 by steel wire operation input and the ball-and-seat pulled out, it is characterized in that: described seal group is made up of baffle ring (12), " V " type packing (10) and support ring (11), in the middle of " V " type packing (10) support ring (11) is arranged, there is baffle ring (12) at the two ends of " V " type packing (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201739393U CN201095974Y (en) | 2007-11-01 | 2007-11-01 | Uniflow valve throwing in and fishing out by steel wire operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201739393U CN201095974Y (en) | 2007-11-01 | 2007-11-01 | Uniflow valve throwing in and fishing out by steel wire operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201095974Y true CN201095974Y (en) | 2008-08-06 |
Family
ID=39923025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201739393U Expired - Fee Related CN201095974Y (en) | 2007-11-01 | 2007-11-01 | Uniflow valve throwing in and fishing out by steel wire operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201095974Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930734A (en) * | 2015-12-30 | 2017-07-07 | 新疆中核天山铀业有限公司 | A kind of ground-dipping uranium extraction drilling exchangeable filter |
| CN109441433A (en) * | 2018-12-11 | 2019-03-08 | 陕西华晨石油科技有限公司 | The concentric sealing test pipe nipple in underground |
| CN112302589A (en) * | 2019-07-29 | 2021-02-02 | 中国石油化工股份有限公司 | Downhole gas lift device and tubular column |
-
2007
- 2007-11-01 CN CNU2007201739393U patent/CN201095974Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930734A (en) * | 2015-12-30 | 2017-07-07 | 新疆中核天山铀业有限公司 | A kind of ground-dipping uranium extraction drilling exchangeable filter |
| CN109441433A (en) * | 2018-12-11 | 2019-03-08 | 陕西华晨石油科技有限公司 | The concentric sealing test pipe nipple in underground |
| CN112302589A (en) * | 2019-07-29 | 2021-02-02 | 中国石油化工股份有限公司 | Downhole gas lift device and tubular column |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080806 Termination date: 20111101 |