CN204851151U - Oily wellhead assembly of oil recovery well theftproof - Google Patents
Oily wellhead assembly of oil recovery well theftproof Download PDFInfo
- Publication number
- CN204851151U CN204851151U CN201520535999.XU CN201520535999U CN204851151U CN 204851151 U CN204851151 U CN 204851151U CN 201520535999 U CN201520535999 U CN 201520535999U CN 204851151 U CN204851151 U CN 204851151U
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- CN
- China
- Prior art keywords
- oil
- well
- flange
- well head
- upper flange
- 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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Abstract
The utility model discloses an oily wellhead assembly of oil recovery well theftproof for various job executions can be accomplished to the oil recovery well in oil field, and can prevent that lawless persons from stealing crude oil from the wellhead assembly. This device includes the big cross of well head, goes up flange and tubing hanger, is equipped with the ring gasket between big cross of well head and the last flange, and the big cross of well head is passed through fastening bolt with last flange and is connected, tubing hanger installs in the inner chamber of the big cross of well head, its lower part and oil pipe nipple joint threaded connection, and the oily nipple joint of preventing burglary is installed in the inner chamber of last flange, its lower part is connected with tubing hanger's upper portion, and the oily nipple joint of preventing burglary has prevented crude oil from last flange seepage flow. The utility model discloses a structure does not influence any job execution, can use on all oil wells, and especially remote well, the serious oil well of robber's oil can avoid lawless persons to unload the phenomenon emergence that flange fastening bolt stole crude oil completely, have protected national property, have reduced manufacturing cost.
Description
Technical field
The utility model relates to the wellhead equipment of petroleum industry producing well guard against theft oil, particularly producing well theft-proof wellhead device, for the producing well in oil field, can complete various job execution, and can prevent lawless person from from wellhead assembly, stealing crude oil.
Background technology
Current crude oil and field facility are frequently stolen and destroy, and cause great economic loss to country, field produces is subject to severe jamming, simultaneously continually stolen serious pollute environment, bring potential safety hazard to normal production.Wellhead assembly is tubing string in sealing wellhead and oil sets annular space, suspension and support well, the visual plant carrying out various production management and operation.Wellhead assembly comprises well head big four, boll-weevil hanger and upper flange, well head big four is built with boll-weevil hanger, well head big four and production tree is connected to by upper flange, crude oil in well enters production tree from upper flange, lawless person often lays down the connecting bolt of upper flange, crude oil is released from steel ring, carries out the illegal activity of stealing crude oil.Wellhead assembly needs to improve, and prevents lawless person from stealing crude oil by this device.
Summary of the invention
The purpose of this utility model is to provide producing well theft-proof wellhead device, completes various job execution, prevents lawless person from from wellhead assembly, stealing crude oil, reduces the labour intensity of workman, ensures the safety of crude oil production.
The technical solution of the utility model is: producing well theft-proof wellhead device comprises well head big four, upper flange and boll-weevil hanger, between well head big four and upper flange, ring gasket is housed, and well head big four is connected by fastening bolt with upper flange; Boll-weevil hanger is arranged in the inner chamber of well head big four, its underpart is threaded with tubing nipple, and guard against theft oil pipe nipple is arranged in the inner chamber of upper flange, its underpart is connected with the top of boll-weevil hanger, and guard against theft oil pipe nipple prevents crude oil from upper flange seepage flow.
Compared with prior art, the beneficial effects of the utility model are:
The utility model uses guard against theft oil pipe nipple upper flange and boll-weevil hanger to be connected, the crude oil in pit shaft inner oil tube is made directly to enter production tree, even if the fastening bolt that lawless person dismantles upper flange can not from this releasing crude oil, stop to steal the malfeasance of crude oil from this.The utility model has also reserved the position of pipe elevator in the upper tubular section of upper flange, directly upwards can hang on flange with elevator during such operation, can flowline be played, implement underground work, not only stop the malfeasance of stealing crude oil from upper flange, and facilitate operation.Proved by field experiment, the utility model effect is good, even if lawless person lays down the fastening bolt of upper flange, crude oil also can not leak, and its structure does not affect any job execution again.The utility model can be applied on all oil wells; especially remote well, the oil well that stolen is serious, can avoid completely lawless person unload upper flange fastening bolt steal crude oil phenomenon occur, protect national wealth; reduce cost of production, there is significant economic benefit and result of use.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail: see Fig. 1, producing well theft-proof wellhead device comprises well head big four 6, upper flange 4 and boll-weevil hanger 2, ring gasket 5 is housed between well head big four 6 and upper flange 4, and well head big four 6 is connected by fastening bolt with upper flange 4; Boll-weevil hanger 2 is arranged in the inner chamber of well head big four, its underpart is threaded with tubing nipple 1, and guard against theft oil pipe nipple 3 is arranged in the inner chamber of upper flange 4, its underpart is connected with the top of boll-weevil hanger 2.Guard against theft oil pipe nipple 3 is provided with external screw thread, the top inner circle of boll-weevil hanger 2 is provided with internal thread, and guard against theft oil pipe nipple 3 is threaded with boll-weevil hanger 2.
Upper flange has two kinds of embodiments:
One, upper flange 4 is flat flanges, and the inner circle of its upper tubular section is provided with internal thread and is connected with guard against theft oil pipe nipple 3.At the two ends of guard against theft oil pipe nipple 3, sealing ring is housed.
Two, upper flange 4 is flat flanges, and the inner chamber of its upper tubular section is equipped with guard against theft oil pipe nipple 3 and sealing drum, and guard against theft oil pipe nipple 3 is arranged in sealing drum, by sealing drum sealed, burglarproof oil pipe nipple 3 and the annular space between well head big four 6 and upper flange 4.
Upper flange 4 and boll-weevil hanger 2 connect by guard against theft oil pipe nipple 3, the crude oil in pit shaft inner oil tube is made directly to enter production tree, even if the fastening bolt that lawless person dismantles upper flange 4 can not from this releasing crude oil, stop to steal the malfeasance of crude oil from this.
In above-mentioned two kinds of embodiments, the upper tubular section of upper flange 4 can suitably lengthen, the position of reserved pipe elevator, is convenient to install pipe elevator, directly can upwards hangs on flange 4 with elevator, can play flowline, implement various underground work during operation.
This device needs operation team to install after construction completes.
Application notice:
1. this device uses pressure to be 25MPa, and flowing well and pressure break, acidizing treatment well, replace with corresponding special pressure break, acidifying wellhead assembly, install the utility model again after having constructed.
2. the valve in this wellhead assembly and clip should use 250 well head special-purpose members, can not reduce pressure rating during use.
Claims (5)
1. producing well theft-proof wellhead device, comprises well head big four, upper flange and boll-weevil hanger, between well head big four and upper flange, ring gasket is housed, and well head big four is connected by fastening bolt with upper flange; Boll-weevil hanger is arranged in the inner chamber of well head big four, its underpart is threaded with tubing nipple, it is characterized in that, guard against theft oil pipe nipple is arranged in the inner chamber of upper flange, its underpart is connected with the top of boll-weevil hanger.
2. producing well theft-proof wellhead device according to claim 1, is characterized in that, described guard against theft oil pipe nipple is provided with external screw thread, the top inner circle of boll-weevil hanger is provided with internal thread, and guard against theft oil pipe nipple is threaded with boll-weevil hanger.
3. producing well theft-proof wellhead device according to claim 1, is characterized in that, described upper flange is flat flange, and the inner circle of its upper tubular section is provided with internal thread and is connected with guard against theft oil pipe nipple.
4. producing well theft-proof wellhead device according to claim 3, is characterized in that, sealing ring is equipped with at the two ends of described guard against theft oil pipe nipple.
5. producing well theft-proof wellhead device according to claim 1, is characterized in that, described upper flange is flat flange, and the inner chamber of its upper tubular section is equipped with guard against theft oil pipe nipple and sealing drum, and guard against theft oil pipe nipple is arranged in sealing drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520535999.XU CN204851151U (en) | 2015-07-23 | 2015-07-23 | Oily wellhead assembly of oil recovery well theftproof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520535999.XU CN204851151U (en) | 2015-07-23 | 2015-07-23 | Oily wellhead assembly of oil recovery well theftproof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204851151U true CN204851151U (en) | 2015-12-09 |
Family
ID=54741709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520535999.XU Expired - Fee Related CN204851151U (en) | 2015-07-23 | 2015-07-23 | Oily wellhead assembly of oil recovery well theftproof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204851151U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285558A (en) * | 2016-11-01 | 2017-01-04 | 李喜庆 | Production wellhead guard against theft oil stop valve |
-
2015
- 2015-07-23 CN CN201520535999.XU patent/CN204851151U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285558A (en) * | 2016-11-01 | 2017-01-04 | 李喜庆 | Production wellhead guard against theft oil stop valve |
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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 |
Granted publication date: 20151209 Termination date: 20180723 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |