CN214997559U - Polished rod breaking blowout preventer - Google Patents
Polished rod breaking blowout preventer Download PDFInfo
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- CN214997559U CN214997559U CN202121257436.0U CN202121257436U CN214997559U CN 214997559 U CN214997559 U CN 214997559U CN 202121257436 U CN202121257436 U CN 202121257436U CN 214997559 U CN214997559 U CN 214997559U
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- pipe body
- sealing ball
- spring
- polish rod
- branch pipe
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Abstract
The utility model discloses a polished rod takes off blowout preventer absolutely contains the main part of preventing spouting of one "Y" font, prevent that the main part of preventing spouting contains the branch pipe body that a pipy is responsible for the body and a slope, the inside spherical seal seat of the body of being responsible for, branch pipe body in be equipped with a pair of nylon ball sealer, the end of branch pipe body be equipped with a detachable spring and a spring holder. The utility model discloses a polished rod takes off blowout preventer absolutely has following advantage: 1. when the polish rod normally runs, the spring elastic sealing ball is always contacted with the polish rod, but the friction surface of the polish rod and the sealing ball is reduced and the spherical surface friction loss is reduced by using the design of double sealing balls and combining the sealing ball, the sealing ball and the spring. 2. When the polish rod is broken and taken off, the spring instantly pushes out the sealing ball, the oil gas which is blown out from the lower part pushes the sealing ball against the sealing ball seat to seal the wellhead, and the automatic blowout prevention function is achieved.
Description
Technical Field
The utility model relates to an oilfield equipment, more precisely, is a polished rod takes off blowout preventer absolutely.
Background
The polish rod is one of the important parts of the oil pumping unit, and is connected with the polished rod eye of the oil pumping unit and the sucker rod string to transfer power. Because of the influence of alternating load, the polished rod can break and fall off due to fatigue, when the polished rod breaks and falls off, the lower part of the breakpoint can fall into the oil well, oil gas in an oil collecting pipeline can flow back to the well head, meanwhile, due to the pressure in the well shaft, the oil gas can be sprayed out from the blowout prevention box to pollute well head equipment and environment, the normal production of the oil well is seriously influenced, the labor intensity of field staff is increased, and potential safety hazards are increased
At present, in the production of an oil pumping well, when a polished rod is broken and separated, if a breaking point is above a blowout prevention box, the oil pumping machine is stopped, then pressure relief is carried out, and finally the broken polished rod is salvaged; if the breakpoint is below the blowout prevention box, the blowout prevention box cannot play a sealing role, oil gas in the oil collection flow and oil gas in the shaft can be ejected from the blowout prevention box, and environmental pollution is caused. If the well mouth is provided with the full-seal blowout preventer, emergency operation can be carried out, if the well mouth is not provided with the full-seal blowout preventer, the oil gas pressure can only be discharged completely, and then the lower part well killing and fishing operation can be carried out. At present, under the premise that a full-seal blowout preventer is not installed in an oil well, a polish rod is broken and taken off, and a breaking point is arranged at the lower part of a blowout prevention box, so that the biggest problem is that oil collection flow and oil gas in a shaft cannot be sealed. There is therefore a need for a polished rod break-out blowout preventer to address such problems.
SUMMERY OF THE UTILITY MODEL
The utility model discloses solve the technical problem that prior art exists to a polished rod takes off blowout preventer absolutely is provided.
The above technical problem of the present invention can be solved by the following technical solutions:
the polished rod breaking and blowout preventer is characterized by comprising a Y-shaped blowout preventer main body, wherein the blowout preventer main body comprises a tubular main pipe body and an inclined branch pipe body, a spherical sealing seat is arranged inside the main pipe body, a pair of nylon sealing balls are arranged in the branch pipe body, and a detachable spring and a spring seat are arranged at the tail end of the branch pipe body.
As the utility model discloses the embodiment of preferred, the upper portion outer wall of being responsible for the body be equipped with a screw thread section, the lower part outer wall of being responsible for the body be equipped with a screw thread section, the terminal inner wall of branch body be equipped with an internal thread section.
As a preferred embodiment of the present invention, the outer wall of the spring seat is provided with an external thread section, and the external thread section is matched with the internal thread section.
The utility model discloses a polished rod takes off blowout preventer absolutely has following advantage:
1. when the polish rod normally runs, the spring elastic sealing ball is always contacted with the polish rod, but the friction surface of the polish rod and the sealing ball is reduced and the spherical surface friction loss is reduced by using the design of double sealing balls and combining the sealing ball, the sealing ball and the spring.
2. When the polish rod is broken and taken off, the spring instantly pushes out the sealing ball, the oil gas which is blown out from the lower part pushes the sealing ball against the sealing ball seat to seal the wellhead, and the automatic blowout prevention function is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the polished rod break-off blowout preventer of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention can be more clearly and clearly defined.
As shown in fig. 1, the polish rod breaking blowout preventer comprises a Y-shaped blowout preventer body 7, wherein the blowout preventer body 7 comprises a tubular main pipe body 71 and an inclined branch pipe body 72, a spherical sealing seat 3 is arranged inside the main pipe body 71, a pair of nylon sealing balls 4 is arranged inside the branch pipe body 72, and a detachable spring 5 and a spring seat 6 are arranged at the tail end of the branch pipe body 72.
The upper outer wall of the main pipe body 71 is provided with an upper thread section 1, the lower outer wall of the main pipe body 71 is provided with a lower thread section 2, and the inner wall of the tail end of the branch pipe body 72 is provided with an inner thread section 73.
The outer wall of the spring seat 6 is provided with an external thread section 61, and the external thread section 61 is matched with the internal thread section 73.
The specific operation of the polish rod breaking blowout preventer is as follows:
during installation, the blowout prevention main body 7 is connected with the Christmas tree and a wellhead blowout prevention box by utilizing the upper thread section 1 and the lower thread section 2, and the nylon sealing ball 4 is placed into the branch pipe body 72 and is in contact with the polish rod 8. And simultaneously, the spring 5 and the spring seat 6 are welded together to form a fixed combination. Finally, spring seat 6 is fixed to the tip of sub-tube 72 by the engagement of male screw section 61 with female screw section 73.
The polished rod breaking blowout preventer has the advantages that:
1. when the polish rod normally runs, the spring elastic sealing ball is always contacted with the polish rod, but the friction surface of the polish rod and the sealing ball is reduced and the spherical surface friction loss is reduced by using the design of double sealing balls and combining the sealing ball, the sealing ball and the spring.
2. When the polish rod is broken and taken off, the spring instantly pushes out the sealing ball, the oil gas which is blown out from the lower part pushes the sealing ball against the sealing ball seat to seal the wellhead, and the automatic blowout prevention function is achieved.
Without being limited thereto, any changes or substitutions which are not thought of through creative efforts should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.
Claims (3)
1. The polish rod breaking and blowout preventing device is characterized by comprising a Y-shaped blowout preventing main body (7), wherein the blowout preventing main body (7) comprises a tubular main pipe body (71) and an inclined branch pipe body (72), a spherical sealing seat (3) is arranged in the main pipe body (71), a pair of nylon sealing balls (4) are arranged in the branch pipe body (72), and a detachable spring (5) and a spring seat (6) are arranged at the tail end of the branch pipe body (72).
2. The polish rod breaking and blowout preventing device according to claim 1, wherein an upper thread section (1) is arranged on the outer wall of the upper part of the main pipe body (71), a lower thread section (2) is arranged on the outer wall of the lower part of the main pipe body (71), and an inner thread section (73) is arranged on the inner wall of the tail end of the branch pipe body (72).
3. The polish rod breaking blowout preventer according to claim 2, wherein the outer wall of the spring seat (6) is provided with an external threaded section (61), and the external threaded section (61) is matched with the internal threaded section (73).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121257436.0U CN214997559U (en) | 2021-06-07 | 2021-06-07 | Polished rod breaking blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121257436.0U CN214997559U (en) | 2021-06-07 | 2021-06-07 | Polished rod breaking blowout preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214997559U true CN214997559U (en) | 2021-12-03 |
Family
ID=79129427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121257436.0U Active CN214997559U (en) | 2021-06-07 | 2021-06-07 | Polished rod breaking blowout preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214997559U (en) |
-
2021
- 2021-06-07 CN CN202121257436.0U patent/CN214997559U/en active Active
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