CN208333956U - A kind of down-hole liquid sampling instrument - Google Patents
A kind of down-hole liquid sampling instrument Download PDFInfo
- Publication number
- CN208333956U CN208333956U CN201821132428.1U CN201821132428U CN208333956U CN 208333956 U CN208333956 U CN 208333956U CN 201821132428 U CN201821132428 U CN 201821132428U CN 208333956 U CN208333956 U CN 208333956U
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- pipe
- shearing
- valve seat
- connector sleeve
- seal pipe
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Abstract
The utility model discloses a kind of down-hole liquid sampling instruments, including top connection, sample cell, valve seat, non-return valve, connector sleeve, seal pipe, shearing pipe, positioning head；Top connection couples with sample cell, sample cell couples with the valve seat for being equipped with runner, the upper surface that non-return valve is located at valve seat is connected to runner, connector sleeve is connect with valve seat, seal pipe is located in connector sleeve and connect with valve seat and be connected to runner, shearing pipe is located in connector sleeve and is set in seal pipe, shearing pipe is equipped with the step-like inner hole of size internal diameter and seal pipe cooperates, seal pipe is equipped with first passage, sealing surface is formed between seal pipe and the inner hole of the small internal diameter of shearing pipe, the tube wall for being located at large diameter inner hole on pipe is sheared equipped with second channel, shearing pipe is located on connector sleeve by shear pin, shearing pipe is connect with positioning head.The utility model can accurately reach tubing string predeterminated position, obtain down-hole liquid pressure maintaining fidelity sample.The utility model is simple and effective, accurately and reliably.
Description
Technical field
The utility model belongs to the sampling instrument of oil and gas exploitation, and in particular to a kind of down-hole liquid sampling instrument.
Background technique
In oil and gas exploitation field, during drilling well, complete well and production, it may be necessary to down-hole liquid sample be taken
Analyze the ingredient and its physics, chemical property of down-hole liquid.How quickly, accurate acquisition destination layer fidelity is high, representative
Sample become sampling work key.Existing liquid sampling tool deposit structure is complicated, sampling inaccuracy, sample save it is bad
The disadvantages of.
Utility model content
The purpose of the utility model is to provide a kind of down-hole liquid sampling instruments that sampling is easy, accurate, sample quality is good.
Down-hole liquid sampling instrument provided by the utility model, including top connection, sample cell, valve seat, non-return valve, connection
Set, seal pipe, shearing pipe, positioning head；The lower end of the top connection couples with the upper end of sample cell, the lower end of the sample cell with
The upper end of valve seat equipped with runner couples, and the upper surface that the non-return valve is located at valve seat is connected to runner, the connector sleeve and
The lower end of valve seat connects, and the seal pipe is located in connector sleeve and connect with the lower end surface of valve seat and be connected to runner, the shearing
Pipe is located in connector sleeve and is set in seal pipe, and shearing pipe is equipped with the step-like inner hole of size internal diameter and seal pipe cooperates, close
The tube wall of tube sealing is equipped with first passage, and seal pipe and shearing are managed between the inner hole of small internal diameter by being located at first passage or more
Sealing ring forms sealing surface, shears and is equipped with the second channel being connected to external fluid positioned at the tube wall of large diameter inner hole on pipe,
Shearing pipe is located on connector sleeve by shear pin, and the upper end of the lower end and the positioning head of shearing pipe is connected through a screw thread.
The utility model has the beneficial effects that
The utility model is a kind of down-hole liquid sampling instrument by the quick tripping in of steel wire, and it is pre- can accurately to reach tubing string
If position, with bumper jar jarring, pin is cut, opens the first passage in seal pipe, external high pressure liquid is through second channel
Enter seal pipe with first passage, push unidirectional valve ball open, into sample cavity, after pressure balance, one-way valve resets pressure maintaining, obtains
Down-hole liquid pressure maintaining fidelity sample.The utility model is simple and effective, accurately and reliably.
The utility model has the following characteristics that
1. being sampled using steel wire operation；
2. sample is in high temperature and high pressure environment, pressure is greater than 20MPa, and temperature is greater than 100 DEG C；
3. can sample in designated position, sample position does not have deviation；
4. the sample fidelity obtained is good, the gas component dissolved in sample liquids is not dissipated, and is volatilized；
5. single, which samples sample size, is not less than 2000ml；
6. sampling operation process should be quick, simply, convenient.
The technical solution of the utility model is further illustrated with reference to the accompanying drawing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the operation principle schematic diagram of the utility model.
Specific embodiment
As shown in Figure 1, down-hole liquid sampling instrument provided by the utility model, including top connection 1, sample cell 2, valve seat 4,
Non-return valve 3, connector sleeve 5, seal pipe 6, shearing pipe 8, positioning head 10；The lower end of the top connection 1 and the upper end of sample cell 2 with
The upper end of thread connection, the lower end of the sample cell 2 and the valve seat 4 equipped with runner 401 is to seal thread connection, the single-direction balls
Valve 3 is threaded and seals and is located at the upper surface of valve seat 4 and is connected to runner 401, the lower end of the connector sleeve 5 and valve seat 4
It being threadedly coupled, the seal pipe 6, which is located at, to be threadedly coupled with sealing with the lower end surface of valve seat 4 in connector sleeve 5 and is connected to runner,
The shearing pipe 8 is located in connector sleeve 5 and is set in seal pipe 6, shearing pipe 8 be equipped with the step-like inner hole of size internal diameter with it is close
Tube sealing 6 cooperates, and the tube wall of seal pipe 6 is equipped with first passage A, passes through position between seal pipe 6 and the inner hole for shearing the small internal diameter of pipe 8
Sealing surface is formed in the O-ring 7 of first passage A or more, shears to be equipped on pipe 8 positioned at the tube wall of large diameter inner hole and be flowed with outside
The second channel B of body connection, shearing pipe 8 are located on connector sleeve 5 by shear pin 9, the lower end of shearing pipe 8 and the positioning
First 10 upper end is connected through a screw thread.
Working principle:
See Fig. 2, will quickly be taken in the utility model tool tripping in down-hole pipe D by the steel wire being connect with top connection 1
The position of sample, i.e. positioning head 10 are lower to the position tubing string locking step c in pipeline D, since the first passage A in seal pipe 6 is close
Upper lower O-shape ring 7 between tube sealing 6 and shearing pipe 8 seals, and is isolated with the second channel B on shearing pipe 8, to connect by jarring
5 relative shear pipe 8 of female connector moves downward and cuts shear pin 9, and also relative shear pipe 8 moves downward seal pipe 6 simultaneously, until
2 O-rings 7 in seal pipe 6 expose sealing surface, and the first passage A in seal pipe 6 is opened and entered the big of shearing pipe 8 at this time
Internal diameter inner hole has larger interval between seal pipe 6 and shearing pipe 8 at this time, so that being able to enter from the liquid that second channel B is flowed into
First passage A, liquid enter after first passage A and enter sample cell 2 by seal pipe 6, valve seat 4 and non-return valve 3.When liquid fills
It will lead to internal and external pressure balance after full sample cell 2, channel is truncated under spring thrust effect in the valve ball of non-return valve 3, and pressure maintaining takes
Sample is completed, and sampling instrument can be recycled.
Claims (1)
1. a kind of down-hole liquid sampling instrument, it is characterized in that including top connection, sample cell, valve seat, non-return valve, connector sleeve, close
Tube sealing, shearing pipe, positioning head；The lower end of the top connection couples with the upper end of sample cell, the lower end of the sample cell be equipped with
The upper end of the valve seat of runner couples, and the upper surface that the non-return valve is located at valve seat is connected to runner, the connector sleeve and valve seat
Lower end connection, the seal pipe is located in connector sleeve and connect with the lower end surface of valve seat and be connected to runner, and the shearing pipe is set
It in connector sleeve and is set in seal pipe, shearing pipe is equipped with the step-like inner hole of size internal diameter and seal pipe cooperates, seal pipe
Tube wall be equipped with first passage, the sealing for passing through between the inner hole of small internal diameter and being located at first passage or more is managed in seal pipe and shearing
Circle forms sealing surface, shears the tube wall for being located at large diameter inner hole on pipe equipped with the second channel being connected to external fluid, shearing
Pipe is located on connector sleeve by shear pin, and the upper end of the lower end and the positioning head of shearing pipe is connected through a screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821132428.1U CN208333956U (en) | 2018-07-17 | 2018-07-17 | A kind of down-hole liquid sampling instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821132428.1U CN208333956U (en) | 2018-07-17 | 2018-07-17 | A kind of down-hole liquid sampling instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208333956U true CN208333956U (en) | 2019-01-04 |
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ID=64784686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821132428.1U Active CN208333956U (en) | 2018-07-17 | 2018-07-17 | A kind of down-hole liquid sampling instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208333956U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108716996A (en) * | 2018-07-17 | 2018-10-30 | 湖南唯科拓石油科技服务有限公司 | A kind of down-hole liquid sampling instrument |
-
2018
- 2018-07-17 CN CN201821132428.1U patent/CN208333956U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108716996A (en) * | 2018-07-17 | 2018-10-30 | 湖南唯科拓石油科技服务有限公司 | A kind of down-hole liquid sampling instrument |
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