CN203961891U - A kind of suspension type well-control pressure-testing plug - Google Patents
A kind of suspension type well-control pressure-testing plug Download PDFInfo
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- CN203961891U CN203961891U CN201420412667.8U CN201420412667U CN203961891U CN 203961891 U CN203961891 U CN 203961891U CN 201420412667 U CN201420412667 U CN 201420412667U CN 203961891 U CN203961891 U CN 203961891U
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- central tube
- double
- leather cup
- packing element
- cup type
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Abstract
A suspension type well-control pressure-testing plug, relates to the design field of well control aid.The utility model comprises suspension arrangement, central tube, double-hook joint, and suspension arrangement is connected to central tube one end, and double-hook joint is connected to the other end of central tube; On the central tube between suspension arrangement and double-hook joint, leather cup type packing element is set, two annular packing elements are set on the central tube between leather cup type packing element and double-hook joint, between two annular packing elements, spacer ring is set; Between leather cup type packing element and central tube, seal is set; On the central tube between suspension arrangement and leather cup type packing element, be provided with the inside and outside intercommunicating pore staggering in two upper and lower positions.The utility model is compared with old-fashioned blanking plug, because having increased by two annular packing elements, has greatly improved sealing effectiveness, and oilfield downhole operation is in the work pressure test of well control device.
Description
Technical field
The utility model relates to the design field of well control aid.
Background technology
When workover treatment, after well head and preventer installation, to carry out pressure test and leakage test, the instrument of testing is leakage blanking plug.Existing blanking plug instrument is mainly comprised of main body, leather cup type packing element, top connection, and profile is cylinder.After G.I.H, rely on leather cup type packing element interference fit, ground pump truck is suppressed, and to check preventer, wellhead sealing situation, but because this leather cup type packing element sealing effectiveness is poor, easily causes pressure testing failure; On the other hand, this instrument partly seals pressure testing to preventer and can easily realize, but will be to full envelope pressure testing time, needs connected pipes hanger and screen casing, could realize the work pressure test to full envelope, complicated operation.
Utility model content
The utility model object is for above problem, and a kind of suspension type well-control pressure-testing plug of easy to operate, good sealing effect is provided.
The utility model comprises suspension arrangement, central tube, double-hook joint, and described suspension arrangement is connected to central tube one end, and described double-hook joint is connected to the other end of central tube; On the central tube between suspension arrangement and double-hook joint, leather cup type packing element is set, two annular packing elements are set on the central tube between described leather cup type packing element and double-hook joint, between two annular packing elements, spacer ring is set; Between described leather cup type packing element and central tube, seal is set; On the central tube between described suspension arrangement and leather cup type packing element, be provided with the inside and outside intercommunicating pore staggering in two upper and lower positions.
The utility model double-hook joint inside obstructed (being dead plug); double-hook upper end of joint section diameter is greater than two annular packing element diameters; play righting, the effect of protection packing element; double-hook joint lower end connecting downhole oil pipe; after instrument G.I.H, leather cup type packing element forms initial sealing, and tubing string weight is seated in big four by suspension arrangement on plug; because being processed with tank on suspension arrangement, inner cavity of blow-out preventer is communicated with down-hole casing annular space.After filling water, adopt hydraulic test pump to suppress, the descending compression Crossed Circle of leather cup type packing element packing element, annular packing element Expansion sealing casing annulus, because lower contact is dead plug, inner obstructed, can realize the work pressure test to preventer half envelope, full envelope.The utility model is compared with old-fashioned blanking plug, because having increased by two annular packing elements, has greatly improved sealing effectiveness, and oilfield downhole operation is in the work pressure test of well control device.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The specific embodiment
As shown in Figure 1, the utility model comprises suspension arrangement 1, central tube 2, double-hook joint 3, and suspension arrangement 1 is connected to central tube 2 one end, and double-hook joint 3 is connected to the other end of central tube 2; On the central tube 2 between suspension arrangement 1 and double-hook joint 3, leather cup type packing element 4 is set, two annular packing elements 5 are set on the central tube 2 between leather cup type packing element 4 and double-hook joint 3, between two annular packing elements 5, spacer ring 8 is set; Between leather cup type packing element 4 and central tube 2, seal 6 is set; On the central tube 2 between suspension arrangement 1 and leather cup type packing element 4, be provided with the inside and outside intercommunicating pore 7 staggering in two upper and lower positions.
Claims (1)
1. a suspension type well-control pressure-testing plug, is characterized in that: comprise suspension arrangement, central tube, double-hook joint, described suspension arrangement is connected to central tube one end, and described double-hook joint is connected to the other end of central tube; On the central tube between suspension arrangement and double-hook joint, leather cup type packing element is set, two annular packing elements are set on the central tube between described leather cup type packing element and double-hook joint, between two annular packing elements, spacer ring is set; Between described leather cup type packing element and central tube, seal is set; On the central tube between described suspension arrangement and leather cup type packing element, be provided with the inside and outside intercommunicating pore staggering in two upper and lower positions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420412667.8U CN203961891U (en) | 2014-07-25 | 2014-07-25 | A kind of suspension type well-control pressure-testing plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420412667.8U CN203961891U (en) | 2014-07-25 | 2014-07-25 | A kind of suspension type well-control pressure-testing plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203961891U true CN203961891U (en) | 2014-11-26 |
Family
ID=51922490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420412667.8U Active CN203961891U (en) | 2014-07-25 | 2014-07-25 | A kind of suspension type well-control pressure-testing plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203961891U (en) |
-
2014
- 2014-07-25 CN CN201420412667.8U patent/CN203961891U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |