CN2453123Y - Theft-proof wellhead device - Google Patents
Theft-proof wellhead device Download PDFInfo
- Publication number
- CN2453123Y CN2453123Y CN 00256059 CN00256059U CN2453123Y CN 2453123 Y CN2453123 Y CN 2453123Y CN 00256059 CN00256059 CN 00256059 CN 00256059 U CN00256059 U CN 00256059U CN 2453123 Y CN2453123 Y CN 2453123Y
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- CN
- China
- Prior art keywords
- oil
- theft
- flange
- casing
- guard against
- 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 relates to a theft-proof well head device for the petroleum engineering of an oil field, which is composed of a stuffing box, a three way of an oil casing tube, a communicating oil return pipe of an oil casing tube and an oil outlet. The utility model is characterized in that a connecting pup joint between an oil tube flange and a casing tube flange is lengthened, and the oil outlet is arranged at the upper part of the connecting pup joint, an oil return opening is arranged at the lower part, and a double-arrow head type oil tube hanger of which the arrow directions are opposite is arranged at an inner cavity of the connecting pup joint to separate oil casing tubes. A flange disk on an oil tube is integrated with the stuffing box, and a stuffing gland, a bur remover, a first level stuffing and a second level stuffing are arranged in turn in the stuffing box from top to bottom. The utility model nicely solves the problem of preventing oil from being stolen in a well head.
Description
The utility model relates to the guard against theft oil wellhead assembly of using in the petroleum production engineering of a kind of oil field.
Present wellhead for production closes extremely the oil stealer of fuel-displaced gate, oil pumper is still in oil pumping, causing builds the pressure suppresses packing and bad run oil or the bad oil that runs of flange seal circle thorn is polluted, and also reaches the purpose that the oil stealer steals oil simultaneously easily, brings great economic loss to the oil field.
The purpose of this utility model is exactly in order to overcome present production wellhead defective, has designed a kind of guard against theft oil wellhead assembly.
The utility model is achieved through the following technical solutions:
A kind of guard against theft oil wellhead assembly that is used for the oil field petroleum production engineering is made up of packing box, tubing and casing threeway, tubing and casing connection return duct and oil-out; The pipe nipple that is connected between oil pipe flange and the casing flange is characterized in that extending, be provided with oil-out on connection pipe nipple top, the bottom that connects pipe nipple is provided with oil return opening, with oil-out two dimension axis normal, connect the pipe nipple inner chamber and be provided with the opposite double-head arrow formula of direction boll-weevil hanger, to separate between the tubing and casing, oil pipe upper flange and packing box are one, are provided with packing gland, burr removing device, one-level packing, secondary packing by preface from top to bottom in the packing box;
Be provided with the lower flange of oil pipe flange, the upper flange plate that the lower end is provided with casing flange in tubing and casing flange spool upper end, the internal diameter at middle part and is provided with interior inclined-plane greater than the internal diameter of its underpart on the upper end of its pipe nipple at the middle part;
Boll-weevil hanger is the opposite double-head arrow shape of direction, and interior external diameter is the same with arrow inclined-plane size, all is provided with internal thread in direction of arrow inner radius, and is provided with cannelure in double-head arrow middle part periphery, and cannelure is provided with through hole and communicates with its internal diameter;
Be provided with the anti-theft switch body on oil-out, be provided with the return duct of band one way valve on refluxing opening, the return duct of band one way valve is connected with the oil-out of anti-theft switch body;
One end of anti-theft switch body is provided with the oil-out welding on anti-theft puzzle lock, the other end and the tubing and casing flange spool or is threaded, be provided with the plug of band screw thread in the anti-theft switch body, be threaded with its top, the bottom of its anti-theft switch body is provided with taper plug seat, and the lower, outer perimeter side of its anti-theft switch body is provided with pressure tapping;
The burr removing device is annular, the polished rod external diameter tolerance fit of internal diameter and oil pumper, and inner radius is provided with the blade that can wipe burr on the polished rod off;
Thread protector is tubular, and the upper end is provided with disk, and the bottom is provided with external screw thread, and disk outer shroud week is provided with numerous pin hole, and the cannelure set with the oil pipe upper flange is corresponding, and pin and its are provided with spring in pin hole on thread protector on the end disc movingly.
The utility model is compared with existing wellhead for production; has the anti-protection wellhead assembly function that builds the pressure; also possesses simultaneously the function that guard against theft oil person steals oil; the tubing and casing return duct of band one way valve has guaranteed that oil well does not build the pressure; the oil of oil pipe can back down one way valve and flow to oil casing annular space; make that crude oil is outer to be sprayed or leak outside, make environment not contaminated, make the oil field not be subjected to economic loss.
For further openly the technical solution of the utility model, below in conjunction with Figure of description, by embodiment with elaborate:
The structural front view of Fig. 1-guard against theft oil wellhead assembly
The vertical view of Fig. 2-guard against theft oil wellhead assembly structure
1-packing gland 2-burr removing device 3-primary seal packing
The upper flange plate of 4-pin 5-band packing box
6-secondary seal packing 7-secondary packing sliding sleeve
8-secondary packing shell 9-spring 10-tubing and casing flange spool
The anti-12-thread protector 13-boll-weevil hanger of stealing and selling of 11-
14-anti-theft switch body 15-plug 16-coded lock
17-one way valve 18-theft-proof gate valve
Rod-pumped well is in normal oil pumping process, packing gland 1 compresses burr removing device 2, compresses primary seal packing 3, the primary seal packing presses down pin 4, pin presses down pressing spring 9 under secondary packing sliding sleeve 7, the sliding sleeve, discharge secondary seal packing 6, make it be in off position, primary seal packing 3 is in running order.When primary seal packing 3 wear volumes diminish or when changing, top secondary packing sliding sleeve 7 on the pressure of fluid makes ejector pin nail 4 it on, and the retracting spring 9 secondary seal packings that rebound make it in running order.Lay down packing gland 1, take out burr removing device 2, take out bad primary seal packing with special tool and changed packing, packing gland 1, burr removing device 2 are installed, are recovered operate as normal.When polished rod was cut out burr by the oil stealer, by the reciprocating motion of polished rod, the burr removing device was just wiped the burr on the polished rod off, safeguards the oil well ordinary production.
Oil pumper is in normal oil pumping process, crude oil is risen to well head by oil well pump, enter the cannelure or the direct valve seat that enters anti-theft switch body 14 from oil-out at its middle part by the through hole of boll-weevil hanger 13, come out to enter the tubing and casing return duct from valve seat, this moment is because the spring action of one way valve 17, fluid can not be back to oil casing annular space, can only flow to the oil-collecting main line by theft-proof gate valve.In case being closed extremely to build the pressure by the oil stealer, gate valve steals oil, the pressure of suppressing this moment has surpassed the bounce of spring, one way valve 17 is opened, and fluid is got back to oil casing annular space, has avoided because of the oily phenomenon of race that builds the pressure, making the oil stealer steal oil does not become steathily, promptly be that the oil stealer wants to close dead plug 15 and builds the pressure, owing to be provided with anti-theft puzzle lock 16, do not know that password is basic just not take antitheft close lock nut, also just can't close dead plug and build the pressure, the oil stealer steals oil and does not also become steathily.
Oil pumper in oil pumping process, the anti-11 antitheft pin cannelures of having been compressed into the oil pipe upper flange plate 5 of band packing box by fluid of stealing and selling, the oil stealer lays down flange bolt with exactlying, upper flange plate is also taken not get off, oil does not become steathily yet steathily.
When this pumpingh well workover treatment, rotation anti-theft cipher lock nut is aimed at password, lays down the password lock nut, close dead plug 15 with special tool, close dead Anti-theft anchor gate 18, bleed off tubing pressure, the anti-cannelure that is ejected the oil pipe upper flange plate by spring of stealing and selling, lay down flange bolt, can take away the oil pipe upper flange plate, lay down thread protector, the tubing nipple of screwing on just can be carried sucker rod or carry oil pipe, carry out the workover treatment of different content, and useful dismounting flow process.
The utility model preferably resolves in the problem of well head guard against theft oil and guard against theft oil does not influence the workover treatment problem.
Claims (7)
1, a kind of guard against theft oil wellhead assembly that is used for the oil field petroleum production engineering, by packing box, the tubing and casing threeway, tubing and casing connects return duct and oil-out is formed, the pipe nipple that is connected between oil pipe flange and the casing flange is characterized in that extending, be provided with oil-out on connection pipe nipple top, the bottom that connects pipe nipple is provided with oil return opening, connect the pipe nipple inner chamber and be provided with the opposite double-head arrow formula of direction boll-weevil hanger, to separate between the tubing and casing, oil pipe upper flange and packing box are one, are provided with packing gland by preface from top to bottom in the packing box, the burr removing device, the one-level packing, the secondary packing.
2, guard against theft oil wellhead assembly according to claim 1, it is characterized in that tubing and casing flange spool upper end is provided with the lower flange of oil pipe flange, the upper flange plate that the lower end is provided with casing flange, the internal diameter at middle part is greater than the internal diameter of its underpart on the upper end of its pipe nipple, and is provided with interior inclined-plane at the middle part.
3, guard against theft oil wellhead assembly according to claim 1, it is characterized in that boll-weevil hanger is the opposite double-head arrow shape of direction, interior external diameter is the same with arrow inclined-plane size, all be provided with internal thread in direction of arrow inner radius, and periphery is provided with cannelure in the middle part of double-head arrow, and cannelure is provided with through hole and communicates with its internal diameter.
4, guard against theft oil wellhead assembly according to claim 1 is characterized in that oil-out is provided with the anti-theft switch body, is provided with the return duct of band one way valve on refluxing opening, and the return duct of band one way valve is connected with the oil-out of anti-theft switch body.
5, guard against theft oil wellhead assembly according to claim 1, an end that it is characterized in that the anti-theft switch body is provided with oil-out welding or the screwed connection on anti-theft puzzle lock, the other end and the tubing and casing flange spool, be provided with the plug of band screw thread in the anti-theft switch body, be threaded with its top, the bottom of its anti-theft switch body is provided with taper plug seat, and the lower, outer perimeter side of its anti-theft switch body is provided with pressure tapping.
6, according to claim 1,2,3,4,5 described guard against theft oil wellhead assemblies, it is characterized in that the burr removing device is annular, the polished rod external diameter tolerance fit of internal diameter and oil pumper, inner radius is provided with the blade that can wipe burr on the polished rod off.
7, guard against theft oil wellhead assembly according to claim 1, it is characterized in that thread protector is tubular, the upper end is provided with disk, the bottom is provided with internal thread, disk outer shroud week is provided with numerous pin hole, the cannelure set with oil pipe upper flange endoporus is corresponding, and pin and its are provided with spring movingly in pin hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00256059 CN2453123Y (en) | 2000-10-19 | 2000-10-19 | Theft-proof wellhead device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00256059 CN2453123Y (en) | 2000-10-19 | 2000-10-19 | Theft-proof wellhead device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2453123Y true CN2453123Y (en) | 2001-10-10 |
Family
ID=33612847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00256059 Expired - Fee Related CN2453123Y (en) | 2000-10-19 | 2000-10-19 | Theft-proof wellhead device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2453123Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761526A (en) * | 2016-12-30 | 2017-05-31 | 天津中车机辆装备有限公司 | Steel wire rope pumping return channel |
| CN107687330A (en) * | 2016-08-04 | 2018-02-13 | 东营利达石油工程技术服务有限公司 | Intelligent anti-theft record pressure sampler |
-
2000
- 2000-10-19 CN CN 00256059 patent/CN2453123Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107687330A (en) * | 2016-08-04 | 2018-02-13 | 东营利达石油工程技术服务有限公司 | Intelligent anti-theft record pressure sampler |
| CN106761526A (en) * | 2016-12-30 | 2017-05-31 | 天津中车机辆装备有限公司 | Steel wire rope pumping return channel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |