CN207598230U - A kind of shaft bottom negative pressure monitoring device - Google Patents
A kind of shaft bottom negative pressure monitoring device Download PDFInfo
- Publication number
- CN207598230U CN207598230U CN201721490504.1U CN201721490504U CN207598230U CN 207598230 U CN207598230 U CN 207598230U CN 201721490504 U CN201721490504 U CN 201721490504U CN 207598230 U CN207598230 U CN 207598230U
- Authority
- CN
- China
- Prior art keywords
- pressure gauge
- seating nipple
- outer barrel
- pressure
- installation cavity
- 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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- Measuring Fluid Pressure (AREA)
Abstract
The utility model is a kind of shaft bottom negative pressure monitoring device, and the nitrogen foam being connected in de-plugging operation oil well returns the bottom of comb column, and bottom pressure is tested.The present apparatus includes pressure gauge, pressure gauge installation cavity is equipped in the inner cavity of seating nipple, remaining cavity is fluid course, pressure gauge is mounted in pressure gauge installation cavity, the both ends of seating nipple are threadedly coupled with top connection and lower contact, upper outer barrel is threadedly coupled with top connection, mounted on the outside of seating nipple, the lower part of lower outer barrel and the lower thread of seating nipple connect, and the pressure transmission hole on lower outer barrel is connected with the pressure gauge installation cavity in work tube inner chamber.The present apparatus can accurately measure down-hole pressure, reliable data information is provided for production, technical staff can be made to correspond to each period negative pressure value and go out the preferred construction parameter of liquid situation and handle up opportunity, effectively improve the plugging removal effect of oil well, so as to the recovery ratio for improving oil well productivity, improving crude oil, there is significant using effect and application value.
Description
Technical field
The utility model is related to the test device of petroleum industry bottom pressure, particularly a kind of shaft bottom negative pressure monitoring device,
The nitrogen foam being connected in de-plugging operation oil well returns the bottom of comb column, and bottom pressure is tested.
Background technology
The oil well that some early stages of oil field go into operation, since oil layer protection attention degree is inadequate, formation contaminant leads to oil layer blocking,
Production capacity is lasting relatively low after near wellbore formation blocking leads to some oil wells operation in old well production process.With prolonging for oil field development phase
Long, low liquid inefficient well ratio gradually increases, and the serious oil field that restricts proposes effect exploitation.For these low liquid wells mainly using acid
The modes such as change, squeeze pack sand control are administered, and well stimulation is single, and regulation effect is limited.Currently for individual well difference reservoir characteristic,
Difference production feature with reference to reservoir condition, returns drainage technique using nitrogen foam negative pressure and administers low liquid well, improve low liquid, inefficient well
Production capacity, have preferable effect.In order to intuitively read the pressure value on stratum, shaft bottom negative pressure value when calculating the row of returning, knot
Situations such as stratum goes out liquid when row is returned in conjunction, sand is spat on stratum, the optimization row of returning handle up construction parameter, handle up opportunity, raising, which is returned, mediates stifled arrange
Effect is applied, needs to manufacture a kind of shaft bottom negative pressure monitoring device.
Invention content
The purpose of this utility model is to provide a kind of shaft bottom negative pressure monitoring device, connects and returns comb column in nitrogen foam
Bottom, Validity Test is realized to shaft bottom negative pressure, monitors the bottom pressure during the row of returning, preferably optimizes and returns the ginseng that applies work
Number improves the plugging removal effect of oil well, improves the recovery ratio of crude oil.
The technical solution of the utility model is：A kind of shaft bottom negative pressure monitoring device include pressure gauge, seating nipple it is interior
In chamber be equipped with pressure gauge installation cavity, remaining cavity be fluid course, by pressure gauge be mounted on pressure gauge installation cavity in, seating nipple
Both ends are threadedly coupled with top connection and lower contact, and upper outer barrel is threadedly coupled with top connection, mounted on the outside of seating nipple, lower outer barrel
Lower part and the lower thread of seating nipple connect, the pressure transmission hole on lower outer barrel connects with the pressure gauge installation cavity in work tube inner chamber
It is logical.
The notable using effect of the utility model is：The present apparatus returns comb column down toward shaft bottom with nitrogen foam, passes through pressure
Meter can monitor bottom pressure during the row of returning in real time, after the present apparatus proposes ground, can store data to pressure gauge and explain
Analysis, determines shaft bottom negative pressure value during the row of returning.Technical staff can be made to correspond to each period negative pressure value and go out liquid situation preferably to construct ginseng
It counts and handles up opportunity, effectively improve the plugging removal effect of oil well, so as to the recovery ratio for improving oil well productivity, improving crude oil.The present apparatus
Pressure gauge is mounted in pressure gauge installation cavity, when can be transferred to avoid tubing string and rise between pressure gauge and internal surface of sleeve pipe
It collides with and scrapes and erosion of the downhole fluid to pressure gauge, effective protection test equipment ensure that the test essence of pressure gauge
Degree, can accurately measure down-hole pressure, provide reliable data information for production, have significant using effect and application value.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Specific embodiment
The utility model is described in detail below in conjunction with attached drawing, not limits the scope of protection of the utility model.It is as described below to be only
The preferred embodiment of the utility model, other use the equivalence changes of the utility model, should all belong to the protection of the utility model
Range.
Referring to Fig. 1, a kind of shaft bottom negative pressure monitoring device includes pressure gauge 10, and being equipped with pressure gauge in the inner cavity of seating nipple 3 pacifies
Behave affectedly, remaining cavity is fluid course, pressure gauge 10 is mounted in pressure gauge installation cavity, the both ends of seating nipple 3 and top connection 1
It is threadedly coupled with lower contact 9, upper outer barrel 4 is threadedly coupled with top connection 1, mounted on the outside of seating nipple 3, the lower part of lower outer barrel 5
It is connect with the lower thread of seating nipple 3, the pressure transmission hole on lower outer barrel 5 is connected with the pressure gauge installation cavity in 3 inner cavity of seating nipple.
The pressure gauge installation cavity is biased in the side of 3 inner cavity of seating nipple, the outside side wall of pressure gauge installation cavity is equipped with pressure
Power meter mounting groove is penetrated through with upper outer barrel 4 and lower outer barrel 5, and the pressure transmission hole of lower outer barrel 5 is connected with the pressure gauge mounting groove.
The bottom fixed spring 7 of the pressure gauge installation cavity is equipped with filler ring 6, pressure gauge between spring 7 and pressure gauge 10
10 top is stuck in the top of pressure gauge installation cavity.
Holding screw 8, seating nipple 3 and the spiral shell of top connection 1 are also equipped between the lower outer barrel 5 and the thread segment of seating nipple 3
Fixing screws 2 are also equipped between line section.
The seating nipple 3 is equipped with sealing ring 11 with the junction of top connection 1 and lower contact 9.
It is returned in comb column in use, this tool is connected on nitrogen foam, operation pressure can be measured in lower going-into-well.When need
When taking out pressure gauge 10, it is only necessary to outer barrel 4 in dismounting, you can dismounting pressure gauge 10.
The embodiment described above is only exemplary embodiments, but the utility model is not limited only to these embodiments, ability
The technical staff in domain can make modification under without departing from the spirit of the utility model and enlightenment.Aspect disclosed herein may
In the presence of many changes, combination and modification, and all in the scope of the utility model, therefore, protection domain is not limited only to above
Explanation.
Claims (5)
1. a kind of shaft bottom negative pressure monitoring device, including pressure gauge, it is characterized in that, pressure gauge is equipped in the inner cavity of seating nipple and is installed
Chamber, remaining cavity are fluid course, and pressure gauge is mounted in pressure gauge installation cavity, the both ends of seating nipple and top connection and under connect
Head thread connects, and upper outer barrel is threadedly coupled with top connection, under the outside of seating nipple, the lower part and seating nipple of lower outer barrel
Portion is threadedly coupled, and the pressure transmission hole on lower outer barrel is connected with the pressure gauge installation cavity in work tube inner chamber.
2. a kind of shaft bottom negative pressure monitoring device as described in claim 1, it is characterized in that, the pressure gauge installation cavity is biased in work
Make the side of tube inner chamber, the outside side wall of pressure gauge installation cavity is equipped with pressure gauge mounting groove and is penetrated through with upper outer barrel and lower outer barrel, under
The pressure transmission hole of outer barrel is connected with the pressure gauge mounting groove.
3. a kind of shaft bottom negative pressure monitoring device as claimed in claim 1 or 2, it is characterized in that, the bottom of the pressure gauge installation cavity
Portion's fixed spring is equipped with filler ring between spring and pressure gauge, and the top of pressure gauge is stuck in the top of pressure gauge installation cavity.
4. a kind of shaft bottom negative pressure monitoring device as claimed in claim 3, it is characterized in that, the screw thread of the lower outer barrel and seating nipple
Holding screw is also equipped between section, fixing screws are also equipped between seating nipple and the thread segment of top connection.
5. a kind of shaft bottom negative pressure monitoring device as claimed in claim 4, it is characterized in that, the seating nipple and top connection and under connect
The junction of head is equipped with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721490504.1U CN207598230U (en) | 2017-11-10 | 2017-11-10 | A kind of shaft bottom negative pressure monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721490504.1U CN207598230U (en) | 2017-11-10 | 2017-11-10 | A kind of shaft bottom negative pressure monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207598230U true CN207598230U (en) | 2018-07-10 |
Family
ID=62757984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721490504.1U Expired - Fee Related CN207598230U (en) | 2017-11-10 | 2017-11-10 | A kind of shaft bottom negative pressure monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207598230U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110778293A (en) * | 2018-07-11 | 2020-02-11 | 中石化石油工程技术服务有限公司 | Multifunctional combined hole digger |
| CN112343584A (en) * | 2020-11-03 | 2021-02-09 | 中国石油天然气股份有限公司 | Pressure working barrel for external channeling of horizontal well inspection pipe and verification method thereof |
-
2017
- 2017-11-10 CN CN201721490504.1U patent/CN207598230U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110778293A (en) * | 2018-07-11 | 2020-02-11 | 中石化石油工程技术服务有限公司 | Multifunctional combined hole digger |
| CN112343584A (en) * | 2020-11-03 | 2021-02-09 | 中国石油天然气股份有限公司 | Pressure working barrel for external channeling of horizontal well inspection pipe and verification method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180710 Termination date: 20201110 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |