CN201358750Y - Hydrodynamic drop-in tool of bridge plug - Google Patents
Hydrodynamic drop-in tool of bridge plug Download PDFInfo
- Publication number
- CN201358750Y CN201358750Y CNU2009200360923U CN200920036092U CN201358750Y CN 201358750 Y CN201358750 Y CN 201358750Y CN U2009200360923 U CNU2009200360923 U CN U2009200360923U CN 200920036092 U CN200920036092 U CN 200920036092U CN 201358750 Y CN201358750 Y CN 201358750Y
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- Prior art keywords
- connecting rod
- piston
- wall
- pipe
- pressure transmission
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- Expired - Fee Related
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Abstract
The utility model provides a hydrodynamic drop-in tool of a bridge plug. Big threads at the lower part of a diverting joint are connected with a primary hydraulic cylinder; small threads at the lower part of the diverting joint are connected with the upper part of a pressure transmitting inner pipe; a connecting rod is arranged at the lower part of the pressure transmitting inner pipe; a pressure separating joint is fixed at the upper part of the connecting rod; a primary piston is positioned between the primary hydraulic cylinder and the pressure transmitting inner pipe; the outer wall of the primary piston is matched with the inner wall of the primary hydraulic cylinder; the upper inner wall of the primary piston is matched with the outer wall of the pressure transmitting inner pipe; a secondary piston is arranged below the primary piston; the outer wall of the secondary piston is matched with the lower inner wall of the primary piston; the inner wall of the secondary piston is matched with the outer wall of the connecting rod; a pressure inlet hole is formed at the upper part of the pressure transmitting inner pipe; a pressure outlet hole is formed at the upper part of the connecting rod; and a vertical pressure transmitting hole and a communication pore are formed on the diverting joint. The drop-in tool can be used repeatedly so as to save the cost of oil well tools. As bridge plug is not provided with a hydraulic push device, the utility model further has the advantages that the structure of the bridge plug is simple; the operation is more reliable; the length of the bridge plug can be shortened; and the drop-in tool is suitable for blocking and sealing small interlayer oil wells.
Description
Technical field:
Matched device when the utility model is down-hole, oil field bridge plug seat envelope is a kind of bridging plug fluid power dropping feeder.
Background technology:
Down-hole, oil field bridge plug seat needs motive force that its envelope shear pin is cut off back grappling, seat envelope when sealing, the bridging plug that has is that thrust unit is designed on bridging plug, make the bridging plug complex structure like this, poor reliability, success rate is low, all needs a cover hydraulic pushing device on every cover bridging plug, bridging plug cost height, length is long, is not suitable for card envelope septulum layer oil well.
Summary of the invention:
The purpose of this utility model is a kind of bridging plug fluid power dropping feeder of design, is used to promote bridging plug grappling, seat envelope, simplifies bridging plug.
The purpose of this utility model is achieved in that by tap, first stage piston, the one-level hydraulic cylinder, pipe in the pressure transmission, every crimp head, second piston, connecting rod is formed, tap bottom major thread is connected with the one-level hydraulic cylinder, tap bottom minor thread is connected with pipe top in the pressure transmission, connecting rod is arranged at the pipe bottom in the pressure transmission, be fixed on connecting rod top every crimp head, first stage piston is between one-level hydraulic cylinder and the interior pipe of pressure transmission, the first stage piston outer wall cooperates with one-level hydraulic cylinder inwall, inwall cooperates with the pressure transmission outer wall of inner tube on the first stage piston, it under the first stage piston second piston, the second piston outer wall cooperates with inwall under the first stage piston, inwall also with every the crimp head outer wall cooperates under the first stage piston, the second piston inwall cooperates with the connecting rod outer wall, the entrance pressure hole is arranged at pipe top in the pressure transmission, the pressure of going out hole is arranged at connecting rod top, and perpendicular shape pressure transmission hole is arranged on the tap, and linked hole is arranged on the tap.
The pipe bottom is threaded with connecting rod top in the pressure transmission.
Be fixed on connecting rod top every crimp head with screw thread.
The beneficial effects of the utility model are: when boosting in the tap, first stage piston, second piston can both produce thrust, the bridging plug slips anchoring that all promotes its underpart with joint efforts of two-stage piston and packing element expansion, after making bridging plug grappling sealing, the utility model can separate with bridging plug and is suggested, therefore, the utility model can use repeatedly, can save the oil tool expense.Because do not have hydraulic pushing device on the bridging plug, thereby bridging plug is simple in structure, it is more reliable to work, the length of bridging plug can shorten, and is applicable to card envelope septulum layer oil well, therefore, the utlity model has remarkable economic efficiency.
Description of drawings
Accompanying drawing is the assembling drawing of the utility model embodiment.
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described.
By tap 1, first stage piston 2, one-level hydraulic cylinder 3, pipe 4 in the pressure transmission, every crimp head 5, second piston 6, connecting rod 7 is formed, tap 1 bottom major thread is connected with one-level hydraulic cylinder 3, tap 1 bottom minor thread is connected with pipe 4 tops in the pressure transmission, connecting rod 7 is arranged at pipe 4 bottoms in the pressure transmission, be fixed on connecting rod 7 tops every crimp head 5, first stage piston 2 is in manages between 4 in one-level hydraulic cylinder 3 and the pressure transmission, first stage piston 2 outer walls cooperate with one-level hydraulic cylinder 3 inwalls, inwall cooperates with pipe 4 outer walls in the pressure transmission on the first stage piston 2, it under the first stage piston 2 second piston 6,2 times inwalls of second piston 6 outer walls and first stage piston cooperate, 2 times inwalls of first stage piston also with every crimp head 5 outer walls cooperate, second piston 6 inwalls cooperate with connecting rod 7 outer walls, entrance pressure hole 10 is arranged at pipe 4 tops in the pressure transmission, and the pressure of going out hole 11 is arranged at connecting rod 7 tops, and perpendicular shape pressure transmission hole 8 is arranged on the tap 1, linked hole 9 is arranged on the tap 1, and the effect of linked hole 9 is equilibrium oil pipe pressures when going into the well.Pipe 4 bottoms are threaded with connecting rod 7 tops in the pressure transmission.Be fixed on connecting rod 7 tops every crimp head 5 usefulness screw threads.The oil pipe box thread is arranged at tap 1 top, and connecting thread is arranged at connecting rod 7 bottoms.
During use, connecting rod 7 lower thread are connected with bridging plug, second piston 6 bottoms are on the packing element gland of bridging plug, tap 1 top has the oil pipe box thread to be connected under the oil pipe, with oil pipe behind design attitude, in oil pipe, drop into and stop up steel ball, stop up steel ball seat and drop on the valve port of tap 1, stop up linked hole 9.In oil pipe, boost, hydraulic pressure imports first stage piston 2 upper ends into through pressure transmission hole 8, simultaneously through entrance pressure hole 10, go out to press hole 11, hydraulic pressure is reached second piston 6 upper ends, and the thrust that the two-stage piston produces acts on second piston 6 lower ends simultaneously, and acts on the packing element gland of bridging plug, make the slips anchoring and the packing element expansion Sealed casing pipe of bridging plug, after bridge plug seat envelope put in place, thrust was broken the tension force stick on the bridging plug, and the utility model separates with bridging plug and is suggested.
Claims (4)
1, a kind of bridging plug fluid power dropping feeder, by tap (1), first stage piston (2), one-level hydraulic cylinder (3), pipe (4) in the pressure transmission, every crimp head (5), second piston (6), connecting rod (7) is formed, it is characterized in that: tap (1) bottom major thread is connected with one-level hydraulic cylinder (3), tap (1) bottom minor thread is connected with pipe (4) top in the pressure transmission, connecting rod (7) is arranged at pipe (4) bottom in the pressure transmission, be fixed on connecting rod (7) top every crimp head (5), first stage piston (2) is in manages between (4) in one-level hydraulic cylinder (3) and the pressure transmission, first stage piston (2) outer wall cooperates with one-level hydraulic cylinder (3) inwall, first stage piston (2) is gone up inwall and is cooperated with pipe (4) outer wall in the pressure transmission, under the first stage piston (2) second piston (6), second piston (6) outer wall cooperates with inwall under the first stage piston (2), first stage piston (2) down inwall also with cooperate every crimp head (5) outer wall, second piston (6) inwall cooperates with connecting rod (7) outer wall, entrance pressure hole (10) is arranged at pipe (4) top in the pressure transmission, the pressure of going out hole (11) is arranged at connecting rod (7) top, perpendicular shape pressure transmission hole (8) is arranged on the tap (1), linked hole (9) is arranged on the tap (1).
2, bridging plug fluid power dropping feeder according to claim 1 is characterized in that: pipe (4) bottom is threaded with connecting rod (7) top in the pressure transmission.
3, bridging plug fluid power dropping feeder according to claim 1 is characterized in that: be fixed on connecting rod (7) top every crimp head (5) with screw thread.
4, bridging plug fluid power dropping feeder according to claim 1 is characterized in that: the oil pipe box thread is arranged at tap (1) top, and connecting thread is arranged at connecting rod (7) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200360923U CN201358750Y (en) | 2009-03-12 | 2009-03-12 | Hydrodynamic drop-in tool of bridge plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200360923U CN201358750Y (en) | 2009-03-12 | 2009-03-12 | Hydrodynamic drop-in tool of bridge plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201358750Y true CN201358750Y (en) | 2009-12-09 |
Family
ID=41424512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200360923U Expired - Fee Related CN201358750Y (en) | 2009-03-12 | 2009-03-12 | Hydrodynamic drop-in tool of bridge plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201358750Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112177561A (en) * | 2019-07-03 | 2021-01-05 | 中国石油化工股份有限公司 | Bridge plug feeder, cementing plug pipe column and cementing plug process |
-
2009
- 2009-03-12 CN CNU2009200360923U patent/CN201358750Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112177561A (en) * | 2019-07-03 | 2021-01-05 | 中国石油化工股份有限公司 | Bridge plug feeder, cementing plug pipe column and cementing plug process |
| CN112177561B (en) * | 2019-07-03 | 2022-07-15 | 中国石油化工股份有限公司 | Bridge plug feeder, cementing plug pipe column and cementing plug process |
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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: 20091209 Termination date: 20100312 |