CN201610736U - Sampling anti-theft device for oil well - Google Patents
Sampling anti-theft device for oil well Download PDFInfo
- Publication number
- CN201610736U CN201610736U CN2010201024496U CN201020102449U CN201610736U CN 201610736 U CN201610736 U CN 201610736U CN 2010201024496 U CN2010201024496 U CN 2010201024496U CN 201020102449 U CN201020102449 U CN 201020102449U CN 201610736 U CN201610736 U CN 201610736U
- Authority
- CN
- China
- Prior art keywords
- sampling
- valve
- oil well
- way valve
- theft device
- 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
Links
Images
Landscapes
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
The utility model relates to a sampling anti-theft device for an oil well; the device comprises a sampling check valve and a sampling tube connection component which is used for opening the sampling check valve, wherein the sampling check valve is connected and communicated with wellhead flow lines; external part of the sampling check valve is sleeved with an anti-theft sheath which is welded and connected with the wellhead flow lines; the sampling tube connection component comprises a sampling short piece, a through tube and a cut-off valve which are orderly connected; the sampling short piece is connected with the sampling check valve through screw threads. The device can effectively prevent the crude oil from being theft at the sampling valve, and has the advantages of reasonable structure, and convenient installation and use, etc.
Description
Technical field
The utility model belongs to oilfield sampling technique field, is a kind of oil well sampling anti-theft device that is used to control the well head pipeline.
Background technology
Sample valve all is housed, so that regularly at well mouth of oil well admission oil sample on the flow line of oil well mouth.Another effect of sample valve is at well head gate maintain and replace, does the atmospheric valve use when adding Polish rod packing.Because oil well mostly is distributed in the field, is difficult to keep an eye on, and often appears at the stolen phenomenon of sample valve place crude oil, brings economic loss to the oil field, seriously affects the ordinary production of oil well.Present known oil well sample valve is a kind of single stop valve, though it is simple in structure, theftproof performance is poor, is easily opened or lay down by the lawless person to steal to put crude oil, not only can cause economic loss, also easily forms large-area pollution.For this reason, generally be that the well head theft-proof box is welded extremely or blocks, need employ electricity, gas welding and crane during sampling, very trouble causes cost of production to increase, and also can influence the upkeep operation that other closes on well head sometimes.
The utility model content
The purpose of this utility model is to overcome the defective that prior art exists, provides a kind of and can prevent effectively that crude oil is stolen from sample valve, and oil well sampling anti-theft device rational in infrastructure, easy to install.
Realize that the technical scheme that the purpose of this utility model is taked is: this device by the sampling one way valve and the sampling that is used to open the sampling one way valve take over assembly and form, wherein, the sampling one way valve is connected and is communicated with wellhead flowline, the outer cover of sampling one way valve is equipped with the antitheft sheath that is welded to connect with wellhead flowline, sampling adapter assembly is made up of the sampling pipe nipple, straight pipe, the stop valve that connect successively, and the sampling pipe nipple is connected with the sampling one way valve by screw thread.
Described sampling one way valve is made up of valve body, spool, back-moving spring, spring base, wherein, spool, back-moving spring, spring base are installed in the step through-hole of valve body centre setting successively, the one end is by the connection short tube that has been threaded, and this connects short tube and is connected and is communicated with wellhead flowline.
Described valve body is provided with pressure relief vent, and position corresponding with pressure relief vent on the antitheft sheath has outage.
Described sampling pipe nipple is the telescoping structure of end sealing, and its blind end is provided with a plurality of sampling through holes and is used to back down the push rod of spool.
Oil well sampling anti-theft device according to such scheme is made can prevent effectively that crude oil is stolen from sample valve, and have advantages such as rational in infrastructure, easy to install.
Description of drawings
Fig. 1 is the structural representation of sampling one way valve in the utility model;
Fig. 2 is the structural representation that assembly is taken in sampling in the utility model.
The specific embodiment
Referring to Fig. 1, Fig. 2, oil well sampling anti-theft device of the present utility model is taken over assembly by sampling one way valve and sampling and is formed.The sampling one way valve is made up of valve body 1, spool 2, back-moving spring 3, spring base 4, and wherein, valve body 1 is a sleeve-like configuration, and its centre is provided with step through-hole, and spool 2, back-moving spring 3, spring base 4 are installed in the step through-hole successively.On spring base 4, be provided with oil flow channel, spool 2 is cone-shaped, the one end has the lead 7 that is used for cooperating with back-moving spring 3 location, the other end has and can take over the spool contact 9 that sampling pipe nipple 13 touches in the assembly with sampling, spool 2 can be under the pressure effect of back-moving spring 3 matches with cone hole part branch in the step through-hole, realizes closing of sampling one way valve.For preventing the seepage of spool 2 and valve body 1 fitting face, O-ring seals 8 is housed on the excircle of spool 2.One end of valve body 1 by screw thread be connected short tube 5 and connect, connect short tube 5 and be connected and be communicated with wellhead flowline 6.The outer cover of valve body 1 is equipped with the antitheft sheath 12 that is welded to connect with wellhead flowline 6, with protection sampling one way valve.Be provided with pressure relief vent 10 on valve body 1, position corresponding with pressure relief vent 10 on the antitheft sheath 12 has outage 11, so that the fluid of redundancy is in time discharged during sampling, avoids fluid to accumulate in valve body 1 and the antitheft sheath 12.Sampling adapter assembly is made up of the sampling pipe nipple 13, straight pipe 14, the stop valve 15 that connect successively, and sampling pipe nipple 13 can be connected with valve body 1 by screw thread.One end of sampling pipe nipple 13 is provided with a plurality of sampling through hole 13-2 and is used to back down the push rod 13-1 of spool 2 for the telescoping structure of sealing, its blind end.
Operating principle: during the oil well ordinary production, spool 2 is in closed condition under the effect of back-moving spring 3 and Oil of Oil Pipeline hydraulic coupling, and the sampling one way valve is not destroyed under the protection of antitheft sheath 12.When carrying out the fluid sampling, sampling pipe nipple 13 can be screwed in by valve body 1 front end screwed hole position by screw thread, in the process of its precession, push rod 13-1 contacts with the spool contact 9 of spool 2 outer ends, and back down spool 2 by this contact, fluid flows into sampling pipe nipple 13 and straight pipe 14 from valve body 1, and open stop valve 15 and can enroll oil sample this moment.After finishing sampling, can earlier stop valve 15 be closed, the pipe nipple 13 of will taking a sample again screws out from valve body 1, and in the process that screws out sampling pipe nipple 13, spool 2 resets under the pressure of back-moving spring 3 and closes.Redundant fluid in the sampling pipe nipple 13 flows in the antitheft sheath 12 via the pressure relief vent on the valve body 1 10, is discharged by the outage 11 of antitheft sheath 12 again, can avoid redundant fluid to accumulate thus and condense in valve body 1 and the antitheft sheath 12.
Claims (4)
1. oil well sampling anti-theft device, it is characterized in that: the sampling that this device is opened the sampling one way valve by sampling one way valve and being used to is taken over assembly and is formed, wherein, the sampling one way valve is connected and is communicated with wellhead flowline, the outer cover of sampling one way valve is equipped with the antitheft sheath that is welded to connect with wellhead flowline, sampling adapter assembly is made up of the sampling pipe nipple, straight pipe, the stop valve that connect successively, and the sampling pipe nipple is connected with the sampling one way valve by screw thread.
2. oil well sampling anti-theft device according to claim 1, it is characterized in that: described sampling one way valve is made up of valve body, spool, back-moving spring, spring base, wherein, spool, back-moving spring, spring base are installed in the step through-hole of valve body centre setting successively, the one end is by the connection short tube that has been threaded, and this connects short tube and is connected and is communicated with wellhead flowline.
3. oil well sampling anti-theft device according to claim 1, it is characterized in that: described valve body is provided with pressure relief vent, and position corresponding with pressure relief vent on the antitheft sheath has outage.
4. oil well sampling anti-theft device according to claim 1, it is characterized in that: described sampling pipe nipple is the telescoping structure of end sealing, its blind end is provided with a plurality of sampling through holes and is used to back down the push rod of spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201024496U CN201610736U (en) | 2010-01-27 | 2010-01-27 | Sampling anti-theft device for oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201024496U CN201610736U (en) | 2010-01-27 | 2010-01-27 | Sampling anti-theft device for oil well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201610736U true CN201610736U (en) | 2010-10-20 |
Family
ID=42961368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201024496U Expired - Fee Related CN201610736U (en) | 2010-01-27 | 2010-01-27 | Sampling anti-theft device for oil well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201610736U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113309516A (en) * | 2020-02-26 | 2021-08-27 | 中国石油天然气股份有限公司 | Downhole sampling apparatus and method |
-
2010
- 2010-01-27 CN CN2010201024496U patent/CN201610736U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113309516A (en) * | 2020-02-26 | 2021-08-27 | 中国石油天然气股份有限公司 | Downhole sampling apparatus and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201610736U (en) | Sampling anti-theft device for oil well | |
| CN201635697U (en) | Fractured and acidized oil extraction wellhead device | |
| CN201522388U (en) | Eccentric anti-theft sampling valve | |
| CN203081401U (en) | Manual-hydraulic drive flat valve | |
| CN202866729U (en) | Anti-theft well head device | |
| CN201071707Y (en) | Oil gas anti-theft constant-pressure recovery valve of casing tube | |
| CN201027516Y (en) | Screw pump wellhead device | |
| CN203453168U (en) | Blowout preventer control device with pneumatic pressure testing function | |
| CN201943635U (en) | Anti-theft device for producing well head casing | |
| CN201963252U (en) | Anti-theft unblocking sampling valve for oil extraction well opening | |
| CN104295243A (en) | Completion pipe column and completion technology for oil-gas well | |
| CN201372769Y (en) | Back pressure valve with pressure sensor | |
| CN203515578U (en) | Anti-freezing and anti-theft emptying-free oil well sampling device | |
| CN201992110U (en) | Antitheft sampling valve | |
| CN202452029U (en) | Safety pipeline plug device | |
| CN201027517Y (en) | Oil-extracting well head device of inclined shaft | |
| CN201297172Y (en) | Multifunctional sampling apparatus of oil well and operations tools of the same | |
| CN205012966U (en) | Bailing well head device | |
| CN203403862U (en) | Adjustable oil well sampling pressure-measuring burglarproof valve | |
| CN203594978U (en) | Anti-theft device for oil production pipeline | |
| CN205714180U (en) | A kind of multifunctional well head data recording device | |
| CN103712021A (en) | Plugging pipe saddle | |
| CN105781535B (en) | Multifunctional wellhead data recording device | |
| CN207609402U (en) | Anti-theft device for oil well casing | |
| CN203404479U (en) | Anti-theft device of valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101020 Termination date: 20110127 |