CN218912840U - Semi-full-sealed one-body ram blowout preventer - Google Patents
Semi-full-sealed one-body ram blowout preventer Download PDFInfo
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- CN218912840U CN218912840U CN202222137515.9U CN202222137515U CN218912840U CN 218912840 U CN218912840 U CN 218912840U CN 202222137515 U CN202222137515 U CN 202222137515U CN 218912840 U CN218912840 U CN 218912840U
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Abstract
The utility model relates to the technical field of oilfield downhole operation well control equipment, in particular to a semi-totally-enclosed one-body ram blowout preventer. The well head sealing device comprises a main body, wherein a transverse sealing cavity and a longitudinal sealing cavity are formed in the main body, a sealing assembly used for sealing the longitudinal sealing cavity is arranged in the transverse sealing cavity, and the longitudinal sealing cavity is communicated with a well head; the sealing assembly comprises a left flashboard and a right flashboard which are connected in the transverse sealing cavity in a sliding way, a side door arranged at the opening parts at the two ends of the transverse sealing cavity, and a driving assembly used for driving the left flashboard and the right flashboard to move radially. The half and full-sealed two sets of flashboard are replaced by one set of flashboard, the functions of the half and full-sealed two sets of flashboard are realized, and the two sets of flashboard can be used for replacing the traditional double-flashboard blowout preventer; has the advantages of small volume, light weight, portability, simple installation and operation, safety, reliability and the like.
Description
Technical Field
The utility model relates to the technical field of oilfield downhole operation well control equipment, in particular to a semi-totally-enclosed one-body ram blowout preventer.
Background
In the well repairing process of the underground operation of the oil field, the well control equipment plays a key role in preventing overflow and controlling blowout, so that the well control equipment is installed during the underground operation construction no matter the pressure in the well. Blowout preventers are the core components of well control equipment. The underground operation is divided into a sucker rod blowout preventer, a cable blowout preventer and an oil pipe blowout preventer which are matched according to different construction requirements, and the underground operation is divided into a manual blowout preventer and a hydraulic blowout preventer according to a control mode; the shutter can be classified into: full seal, half seal, reducing, shear ram, etc.; the number of the gate plates can be divided into single gate plates, double gate plates, three gate plates and the like.
Currently, 2SFZ18-35 manual double-ram blowout preventers and 2FZ18-35 hydraulic double-ram blowout preventers are mainly used in cooperation with underground operation sites. A dual piston composite dual ram blowout preventer as provided by the chinese patent of the issued patent CN 211692389U; a hydraulic manual double ram blowout preventer as provided in the chinese patent of the utility model issued to CN 209568991U. The blowout preventer has complete functions and is provided with a pair of full-sealing flashboard and a pair of half-sealing flashboard. When a pipe column exists in the well, the corresponding pipe column and an annular space formed by the shaft are sealed through the semi-sealing flashboard; when no pipe column exists in the well, the fully-sealed flashboard can seal the well mouth.
The double-ram blowout preventer is an indispensable component in the whole operation process, the use frequency is high, but because the design of semi-sealing and full sealing is respectively realized by two layers of rams, the problems of large equipment volume and heavy weight exist, the labor intensity of installation, disassembly and transportation of the blowout preventer is high, and the risk of mechanical injury also exists.
Disclosure of Invention
Aiming at the problems of the currently used double-ram blowout preventer, the utility model provides a semi-full-sealed one-body ram blowout preventer which can not only meet the semi-sealing function but also meet the full-sealing function by one layer of ram in order to lighten the labor intensity of operators and ensure the operation safety, and improve and innovate the structural design of the blowout preventer without changing the functional performance standard of the blowout preventer.
The technical scheme adopted for solving the technical problems is as follows:
a semi-totally-enclosed one-body ram blowout preventer comprises a main body, wherein a transverse sealing cavity and a longitudinal sealing cavity are formed in the main body, a sealing assembly for sealing the longitudinal sealing cavity is arranged in the transverse sealing cavity, and the longitudinal sealing cavity is communicated with a wellhead;
the sealing assembly comprises a left flashboard and a right flashboard which are connected in the transverse sealing cavity in a sliding way, a side door arranged at the opening parts at the two ends of the transverse sealing cavity, and a driving assembly used for driving the left flashboard and the right flashboard to move radially.
Further, front seals are arranged on the opposite sides of the left flashboard and the right flashboard, and a top seal is arranged at the upper end of the left flashboard and the right flashboard;
the two front sealing structures are identical and are arranged in a central symmetry mode, the front sealing structure comprises an upper layer sealing structure and a lower layer sealing structure which are integrally arranged, the upper layer sealing structure is provided with a semicircular groove, and the lower layer sealing structure is provided with a semicircular protrusion.
Further, the radius of the semicircular groove, the radius of the semicircular bulge and the radius of the oil pipe in the well are all equal, and the two front seals are in three states of full opening, half sealing and full sealing;
when the two front seals are completely positioned in the transverse seal cavity, the two front seals are in a completely opened state; when the two semicircular grooves are close to the formed circular groove and are just sleeved with the oil pipe in the well, the two front seals are in a semi-sealing state, and when the semicircular grooves respectively positioned on the two different front seals are meshed with the semicircular protrusions, the two front seals are in a full-sealing state.
After the technical scheme is adopted, the semi-totally-enclosed one-body ram blowout preventer can realize the sealing and blowout prevention of two functions of semi-sealing and totally-enclosed in one layer of ram in one transverse sealing cavity.
Further, the driving assembly comprises a transmission screw rod, a flashboard shaft is sleeved on the outer side of the transmission screw rod, and the left flashboard and the right flashboard are connected with the flashboard shaft;
the outer side of the flashboard shaft is sleeved with a shield, the tail end of the shield is provided with a pressing cap, and a bearing is arranged between the pressing cap and the transmission screw rod.
As optimization, a switch position indication ring is circumferentially arranged at the joint of the shield and the press cap.
As optimization, the side door and the main body, and the shield and the side door are fixedly connected through connecting bolts.
The beneficial effects of the utility model are as follows: the semi-full-sealed one-ram blowout preventer provided by the utility model changes the structure of a double-ram blowout preventer, replaces the semi-full-sealed two sets of rams with one set of ram plates, realizes the functions of the semi-full-sealed two sets of rams, and can replace the traditional double-ram blowout preventer to use; the annular space of the oil sleeve and the empty well of the oil well are sealed in the underground operation process, the overflow is prevented, the blowout is controlled, and the well control safety in the operation construction process is ensured; has the advantages of small volume, light weight, portability, simple installation and operation, safety, reliability and the like.
Drawings
FIG. 1 is a schematic cross-sectional view of the overall structure of the present utility model;
FIG. 2 is a schematic side view of the present utility model;
FIG. 3 is a schematic front view of the front seal half-seal state;
FIG. 4 is a schematic top view of the front seal half-seal;
FIG. 5 is a front view of the front seal fully enclosed state;
fig. 6 is a top view schematic of the front seal fully enclosed condition.
The device comprises a main body, a left flashboard, a front seal, a side door, a right flashboard, a top seal, a flashboard shaft, a transmission screw rod, a shield, a switch position indicating ring, a pressing cap, a connecting bolt and a connecting bolt, wherein the main body, the left flashboard, the front seal, the side door, the right flashboard, the front seal, the top seal, the side door, the left flashboard, the right flashboard, the front seal, the top seal, the flashboard shaft, the left flashboard and the connecting bolt are respectively arranged in sequence, the transmission screw rod, the shield and the left flashboard are respectively arranged in sequence.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Example 1:
the semi-totally-enclosed one-body ram blowout preventer shown in fig. 1-6 comprises a main body 1, wherein a transverse sealing cavity and a longitudinal sealing cavity are formed in the main body 1, a sealing assembly for sealing the longitudinal sealing cavity is arranged in the transverse sealing cavity, and the longitudinal sealing cavity is communicated with a wellhead;
the sealing assembly comprises a left flashboard 2 and a right flashboard 5 which are connected in the transverse sealing cavity in a sliding way, a side door 4 arranged at openings at two ends of the transverse sealing cavity, and a driving assembly used for driving the left flashboard 2 and the right flashboard 5 to move radially.
In this embodiment, the opposite sides of the left gate plate 2 and the right gate plate 5 are provided with a front seal 3, and the upper end is provided with a top seal 6;
the two front seals 3 are identical in structure and are arranged in a central symmetry mode, each front seal 3 comprises an upper seal layer and a lower seal layer which are integrally arranged, each upper seal layer is provided with a semicircular groove, and each lower seal layer is provided with a semicircular protrusion.
In this embodiment, the radius of the semicircular groove, the radius of the semicircular protrusion and the radius of the oil pipe in the well are all equal, and the two front seals 3 are in three states of full open, half seal and full seal;
when the two front seals 3 are completely positioned in the transverse seal cavity, the two front seals 3 are in a completely opened state; when the two semicircular grooves are close to the formed circular groove and are just sleeved with the oil pipe in the well, the two front seals 3 are in a semi-sealing state, and when the semicircular grooves respectively positioned on the two different front seals 3 are meshed with the semicircular protrusions, the two front seals 3 are in a full-sealing state.
After the technical scheme is adopted, the semi-totally-enclosed one-body ram blowout preventer can realize the sealing and blowout prevention of two functions of semi-sealing and totally-enclosed in one layer of ram in one transverse sealing cavity.
In the embodiment, the driving assembly comprises a transmission screw rod 8, a flashboard shaft 7 is sleeved on the outer side of the transmission screw rod 8, and the left flashboard 2 and the right flashboard 5 are connected with the flashboard shaft 7;
the outer side of the flashboard shaft 7 is sleeved with a shield 9, the tail end of the shield 9 is provided with a press cap 11, and a bearing is arranged between the press cap 11 and the transmission screw rod 8.
In this embodiment, the side door 4 and the main body 1, and the shield 9 and the side door 4 are fixedly connected by a connecting bolt 12.
Example 2:
this embodiment is substantially the same as embodiment 1, except that:
in this embodiment, a switch position indicating ring 10 is circumferentially arranged at the connection between the shield 9 and the press cap 11.
Working principle: when an oil pipe is arranged in a well, the left and right transmission screw rods 8 are rotated at the same time to drive the ram shaft 7 to move radially, so that the left ram 2, the right ram 5 and the front seal 3 to which the left ram 5 belongs are pushed to move radially towards the center, and the left ram 2, the right ram 5 and the two front seals 3 are overlapped to form a seal for the oil pipe, so that the sealing and blowout prevention of an oil sleeve annulus are realized, namely, half sealing is realized; when no oil pipe exists in the well, namely, the well is empty, the left flashboard 2, the right flashboard 5 and the two front seals 3 are overlapped to form a seal for the empty well, namely, the diameter of the blowout preventer, so that the full sealing and blowout prevention are realized.
The fully opened, semi-sealed and fully sealed states are displayed by the switch indication ring driven by the flashboard shaft 7.
The foregoing embodiments are merely examples of the present utility model, and the scope of the present utility model includes, but is not limited to, the forms and styles of the foregoing embodiments, and any suitable changes or modifications made by those skilled in the art, which are consistent with the claims of the present utility model, shall fall within the scope of the present utility model.
Claims (4)
1. The utility model provides a semi-totally enclosed one body ram preventer, includes the main part, set up horizontal sealed chamber and vertical sealed chamber in the main part, its characterized in that: the transverse sealing cavity is internally provided with a sealing assembly for sealing the longitudinal sealing cavity, and the longitudinal sealing cavity is communicated with the wellhead;
the sealing assembly comprises a left flashboard and a right flashboard which are connected in the transverse sealing cavity in a sliding way, a side door arranged at the opening parts of the two ends of the transverse sealing cavity, and a driving assembly used for driving the left flashboard and the right flashboard to move radially;
front seals are arranged on the opposite sides of the left flashboard and the right flashboard, and top seals are arranged at the upper ends of the left flashboard and the right flashboard;
the two front sealing structures are identical and are arranged in a central symmetry manner, the front sealing structure comprises an upper sealing layer and a lower sealing layer which are integrally arranged, the upper sealing layer is provided with a semicircular groove, and the lower sealing layer is provided with a semicircular bulge;
the radius of the semicircular groove, the radius of the semicircular bulge and the radius of the oil pipe in the well are all equal, and the two front seals are in three states of full opening, half sealing and full sealing;
when the two front seals are completely positioned in the transverse seal cavity, the two front seals are in a completely opened state; when the two semicircular grooves are close to the formed circular groove and are just sleeved with the oil pipe in the well, the two front seals are in a semi-sealing state, and when the semicircular grooves respectively positioned on the two different front seals are meshed with the semicircular protrusions, the two front seals are in a full-sealing state.
2. The semi-enclosed one-piece ram blowout preventer of claim 1, wherein: the driving assembly comprises a transmission screw rod, a flashboard shaft is sleeved on the outer side of the transmission screw rod, and the left flashboard and the right flashboard are connected with the flashboard shaft;
the outer side of the flashboard shaft is sleeved with a shield, the tail end of the shield is provided with a pressing cap, and a bearing is arranged between the pressing cap and the transmission screw rod.
3. The semi-enclosed one-piece ram blowout preventer of claim 2, wherein: the connection part of the protective cover and the press cap is circumferentially provided with a switch position indication ring.
4. The semi-enclosed one-piece ram blowout preventer of claim 2, wherein: the side door is fixedly connected with the main body, the protecting cover and the side door through connecting bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222137515.9U CN218912840U (en) | 2022-08-15 | 2022-08-15 | Semi-full-sealed one-body ram blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222137515.9U CN218912840U (en) | 2022-08-15 | 2022-08-15 | Semi-full-sealed one-body ram blowout preventer |
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| Publication Number | Publication Date |
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| CN218912840U true CN218912840U (en) | 2023-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222137515.9U Active CN218912840U (en) | 2022-08-15 | 2022-08-15 | Semi-full-sealed one-body ram blowout preventer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116906001A (en) * | 2023-09-08 | 2023-10-20 | 东营市元捷石油机械有限公司 | Inner sleeve type semi-full-sealing integrated blowout preventer |
-
2022
- 2022-08-15 CN CN202222137515.9U patent/CN218912840U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116906001A (en) * | 2023-09-08 | 2023-10-20 | 东营市元捷石油机械有限公司 | Inner sleeve type semi-full-sealing integrated blowout preventer |
| CN116906001B (en) * | 2023-09-08 | 2023-11-24 | 东营市元捷石油机械有限公司 | Inner sleeve type semi-full-sealing integrated blowout preventer |
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