CN203769703U - Coal-bed gas well pressure meter cable wellhead sealing joint - Google Patents
Coal-bed gas well pressure meter cable wellhead sealing joint Download PDFInfo
- Publication number
- CN203769703U CN203769703U CN201420124580.0U CN201420124580U CN203769703U CN 203769703 U CN203769703 U CN 203769703U CN 201420124580 U CN201420124580 U CN 201420124580U CN 203769703 U CN203769703 U CN 203769703U
- Authority
- CN
- China
- Prior art keywords
- wellhead
- bed gas
- gas well
- coal
- well pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model discloses a coal-bed gas well pressure meter cable wellhead sealing joint. The coal-bed gas well pressure meter cable wellhead sealing joint comprises wellhead short sections which are provided with hollow chambers; right sides of the wellhead short sections are sealed; elastic sealing rings and compression steel cylinders are sequentially arranged inside the hollow chambers; rotary end sockets are connected to left sides of the wellhead short sections through threads; a cable channel is formed in a corresponding central line of the rotary end sockets, the compression steel cylinders, the elastic sealing rings and the wellhead short sections. The coal-bed gas well pressure meter cable wellhead sealing joint is mainly applied to sealing of a cable outlet of a coal-bed gas well pressure meter. The rotary end sockets are twisted, the compression steel cylinders move inward, the elastic sealing rings are squeezed to deform, deformation of the elastic sealing rings inside the internal chambers enables the cable channel sections inside the internal chambers to be sealed in a plugging mode, and sealing between the cables and a Christmas tree tee joint is achieved. The coal-bed gas well pressure meter cable wellhead sealing joint has the advantages of being simple in structure and convenient to produce and having good practical values.
Description
Technical field
The utility model relates to a kind of coal bed gas well pressure gauge cable wellhead seal nipple, belongs to coal bed gas well and produces servicing unit technical field.
Background technology
Coal bed gas well needs drainage and step-down while production, therefore all will measure flowing bottomhole pressure (FBHP) at down-hole setting pressure meter.And manometric cable is all the pressure gauge of a termination down-hole conventionally, and along down-hole string up, the last threeway from well head production tree out, because coal bed gas well need to build the pressure, wellhead assembly and pit shaft must seal, and cable outlet, between cable and production tree threeway, sealing problem is a difficult problem.
Summary of the invention
The purpose of this utility model is: a kind of simple and practical pressure gauge cable wellhead seal nipple is provided, can effectively realizes the exit seal problem of pressure gauge cable, to overcome the deficiencies in the prior art.
The technical solution of the utility model
A kind of coal bed gas well pressure gauge cable wellhead seal nipple, comprise the well head tap that is provided with cavity, this well head tap right-hand end sealing, elastic seal ring and compression steel cylinder are put in cavity successively, rotating end is threaded connection the left side at well head tap, on the corresponding center line of rotating end, compression steel cylinder, elastic seal ring and well head tap, is provided with cable passage.
In aforesaid coal bed gas well pressure gauge cable wellhead seal nipple, in well head tap right lateral surface, be provided with screw thread.
Owing to adopting technique scheme, compared with prior art, the utility model is mainly used in the exit seal of coal bed gas well pressure bomb cable, compressing steel cylinder and well head tap is threaded connection and can tightens or unscrew, the well head pipe nipple other end is connected (be threaded connection and realize sealing) with the wellhead tee joint (pressure gauge outlet) of coal bed gas well, size can be adjusted according to the model of wellhead assembly is corresponding, one end that well head tap is connected with production tree is sealed, only staying a circular hole to hold pressure gauge cable enters, one end of rotating end is also sealed, only stay a circular hole to hold pressure gauge cable incoming-outgoing, therefore shaft bottom is cable passage with extraneous unique non-tight place, the utility model is by turning rotating end, compression steel cylinder moves inward, elastic seal ring distortion realizes shutoff cable passage, complete sealing, the utility model is simple in structure, easy to make, there is good practical value.
Brief description of the drawings
Accompanying drawing 1 is the utility model structural representation;
Accompanying drawing 2 is principle schematic of the present utility model.
Being labeled as in accompanying drawing: 1-well head tap, 2-cavity, 3-elastic seal ring, 4-compress steel cylinder, 5-rotating end, 6-cable passage, 7-screw thread.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail, but not as to any restriction of the present utility model.
The utility model embodiment: a kind of coal bed gas well pressure gauge cable wellhead seal nipple, as shown in Figure 1: comprise the well head tap 1 that is provided with cavity 2, in well head tap 1 right lateral surface, be provided with screw thread 7, this well head tap 1 right-hand end sealing, elastic seal ring 3 and compression steel cylinder 4 are put in cavity 2 successively, rotating end 5 is threaded connection in the left side of well head tap 1, on the corresponding center line of rotating end 5, compression steel cylinder 4, elastic seal ring 3 and well head tap 1, is provided with cable passage 6.
Principle of the present utility model: when this coal bed gas well pressure gauge cable wellhead seal nipple is connected (realizing sealing in this junction) by spiral shell with wellhead tee joint, then turn rotating end, compression steel cylinder moves inward, then push elastic seal ring distortion, in inner chamber, elastic seal ring distortion can, this place's cable passage plug for seal, realize the sealing between cable and production tree threeway.
Claims (2)
1. a coal bed gas well pressure gauge cable wellhead seal nipple, comprise the well head tap (1) that is provided with cavity (2), it is characterized in that: the sealing of this well head tap (1) right-hand end, elastic seal ring (3) and compression steel cylinder (4) are put in cavity (2) successively, rotating end (5) is threaded connection in the left side of well head tap (1), on the corresponding center line of rotating end (5), compression steel cylinder (4), elastic seal ring (3) and well head tap (1), is provided with cable passage (6).
2. coal bed gas well pressure gauge cable wellhead seal nipple according to claim 1, is characterized in that: in well head tap (1) right lateral surface, be provided with screw thread (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420124580.0U CN203769703U (en) | 2014-03-19 | 2014-03-19 | Coal-bed gas well pressure meter cable wellhead sealing joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420124580.0U CN203769703U (en) | 2014-03-19 | 2014-03-19 | Coal-bed gas well pressure meter cable wellhead sealing joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203769703U true CN203769703U (en) | 2014-08-13 |
Family
ID=51286904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420124580.0U Expired - Fee Related CN203769703U (en) | 2014-03-19 | 2014-03-19 | Coal-bed gas well pressure meter cable wellhead sealing joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203769703U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869118A (en) * | 2019-04-15 | 2019-06-11 | 成都百胜野牛科技有限公司 | Conduction device and wellhead assembly |
| CN111305785A (en) * | 2018-12-12 | 2020-06-19 | 中国石油天然气股份有限公司 | Wellhead sealing device, installation method and system |
-
2014
- 2014-03-19 CN CN201420124580.0U patent/CN203769703U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111305785A (en) * | 2018-12-12 | 2020-06-19 | 中国石油天然气股份有限公司 | Wellhead sealing device, installation method and system |
| CN109869118A (en) * | 2019-04-15 | 2019-06-11 | 成都百胜野牛科技有限公司 | Conduction device and wellhead assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20160319 |