CN202047779U - Inner balance electronic sensing cementing head - Google Patents
Inner balance electronic sensing cementing head Download PDFInfo
- Publication number
- CN202047779U CN202047779U CN2011201588845U CN201120158884U CN202047779U CN 202047779 U CN202047779 U CN 202047779U CN 2011201588845 U CN2011201588845 U CN 2011201588845U CN 201120158884 U CN201120158884 U CN 201120158884U CN 202047779 U CN202047779 U CN 202047779U
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- cementing head
- electronic induction
- lining
- cementing
- wall
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- Expired - Fee Related
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Abstract
The utility model relates to a petroleum tool, in particular to an inner balance electronic sensing cementing head for a cementing well. The inner balance electronic sensing cementing head comprises an upper cover assembly (1), a body (2), a union A (3), a union B (4), a bumper pin assembly (5), a conical connector (6) and a bushing lower connector (7), wherein a cylindrical lining (8) which is fixed on the inner wall of the body (2) is arranged in the body (2), the inner wall of the cylindrical lining (8) is matched with a rubber plug in a sliding and sealing way, the wall of the lining (8) is axially provided with a pressure balance hole (81) for communicating the inner cavities of the lining (8) above and below the rubber plug, and the outer wall of the body (2) below the bumper pin assembly (5) is provided with an electronic sensing testing instrument (9). Due to the adoption of the inner balance electronic sensing cementing head, not only can a balancing pipe be free from being welded onto the body, but also the body is free from being perforated to install a shifting rod, the inner balance electronic sensing cementing head has the advantages that the strength of the body can be guaranteed, the cementing head is easy and simple to process and is easy to operate and maintain, not only can the normal cementing requirement be satisfied, but also the cementing requirement of a high-pressure deep well can be satisfied.
Description
Technical field
The utility model relates to petroleum tool, is specifically related to a kind of cementing head that is used for cementing well.
Background technology
At present, the cementing head that use in the well cementation process in each oil field balance modes that adopt at body outside welding balance pipe more, perforate welding balance pipe is bigger to self strength failure of body on the cementing head body, the thermal stress deformation that welding is brought can reduce the intensity of body, balance pipe welding procedure complexity has increased the processing and manufacturing difficulty and the operation of cementing head.In addition, traditional plug indicator is to adopt lever principle indication plug position, perforate on body, and driving lever is hinged on the driving lever supporting seat that is welded in the body position of opening.Promote driving lever when plug moves down and rotate in body, whether the observation driving lever is positioned at the part of body exterior and rotates, and just can judge whether plug has passed through backing pin.Perforate welding driving lever supporting seat is very unfavorable to the intensity of body on body, and the hinged place of driving lever and body is very big in high-pressure situations lower seal difficulty.Be not easy cleaning after the driving lever supporting seat uses, sealing can't guarantee when used next time.
Summary of the invention
The purpose of this utility model provides that a kind of body intensity is guaranteed, the easy operation of processing and fabricating is simple, Operation and Maintenance easily, can satisfy normal well cementation needs, can satisfy the inner equilibrium formula electronic induction cementing head of high pressure and deep well well cementation needs again.
Technical solution of the present utility model is: it comprises cap assembly, body, union one, union two, backing pin assembly, taper joint and sleeve pipe lower contact, the cylindrical sleeve that be provided with on the inwall that is fixed on body in the body, inwall cooperates with the plug slipper seal, the wall portion of lining is axially arranged with the pressure compensation opening that is communicated with plug above and below lining inner chamber, is fixed with on the body outer wall of backing pin assembly below to be used to test the electronic induction tester whether plug passes through the backing pin assembly.
Technique effect of the present utility model is: it neither need weld balance pipe on body, need on body, perforate be installed by driving lever yet, it is guaranteed to have body intensity, the easy operation of processing and fabricating is simple, Operation and Maintenance is easy to advantage, normal well cementation needs can be satisfied, high pressure and deep well well cementation needs can be satisfied again.When it can guarantee that the plug lower end is subjected to negative pressure, plug pressure at two ends balance did not stress plug and backing pin assembly.Its adopts electronic induction mode to survey plug, and test accurately, and is easy for installation, not be used on the body perforate and welds traditional plug balance indicator, neither can influence the intensity of body, also can reach good airproof performance, the purpose that functional reliability is high.
Description of drawings
Fig. 1 is the axial half sectional view of the utility model embodiment;
Fig. 2 is the axial half sectional view of the utility model embodiment lining;
Fig. 3 is that the utility model embodiment Fig. 2 lining A-A is to sectional view;
Fig. 4 is the utility model embodiment Fig. 2 lining
B-B is to sectional view.
The specific embodiment
As shown in drawings, it comprises cap assembly 1, body 2, union 1, union 24, backing pin assembly 5, taper joint 6 and sleeve pipe lower contact 7, the cylindrical sleeve 8 that be provided with on the inwall that is fixed on body 2 in the body 2, inwall cooperates with the plug slipper seal, the wall portion of lining 8 is axially arranged with the pressure compensation opening 81 that is communicated with plug above and below lining 8 inner chambers, is fixed with on body 2 outer walls of backing pin assembly 5 belows to be used to test the electronic induction tester 9 whether plug passes through backing pin assembly 5.
Last cap assembly 1 is by being threaded in the upper end of body 2, union 1, union 24 and backing pin assembly 5 welded and installed are on body 2, the upper end of taper joint 6 links to each other by screw thread with the lower end of body 2, and the lower end of taper joint 6 links to each other with the upper end of sleeve pipe lower contact 7 by the wing nut 10 that is threaded in the sleeve pipe lower contact 7.Be provided with sealing ring 71 with the sleeve pipe lower contact 7 inner conical faces that the male-tapered face of taper joint 6 is tightly connected mutually.
Electronic induction tester 9 is fixed on body 2 outer walls by clip.Electronic induction tester 9 is fixed on 80mm place, backing pin assembly 5 below on the body 2.
Operating principle of the present utility model: when plug was subjected to negative pressure in body 2, the pressure compensation opening 81 on the lining 8 was communicated with the front and back of lining 8 inner chambers, plug pressure at two ends balance, and plug does not stress, and plug can descendingly not press down backing pin assembly 5.When plug passed through backing pin assembly 5, the indication that is installed in the electronic induction tester 9 in body 2 outsides can change, and can judge that plug has passed through backing pin assembly 5 and entered in the sleeve pipe.
Use this inner equilibrium electronic induction cementing head can reduce the processing cost of cementing head to a great extent, and guaranteed that cementing head intensity is constant, simple to operate, it is convenient to safeguard, can substitute conventional cementing head fully in the ordinary course of things.
Claims (10)
1. inner equilibrium electronic induction cementing head, it comprises cap assembly (1), body (2), union one (3), union two (4), backing pin assembly (5), taper joint (6) and sleeve pipe lower contact (7), it is characterized in that: be provided with on the inwall that is fixed on body (2) in the body (2), the cylindrical sleeve (8) that inwall cooperates with the plug slipper seal, the wall portion of lining (8) is axially arranged with the pressure compensation opening (81) that is communicated with plug above and below lining (8) inner chamber, is fixed with on body (2) outer wall of backing pin assembly (5) below to be used to test the electronic induction tester (9) whether plug passes through backing pin assembly (5).
2. inner equilibrium electronic induction cementing head as claimed in claim 1, it is characterized in that the described cap assembly (1) of going up is by being threaded in the upper end of body (2), union one (3), union two (4) and backing pin assembly (5) welded and installed are on body (2), the upper end of taper joint (6) links to each other by screw thread with the lower end of body (2), and the lower end of taper joint (6) links to each other with the upper end of sleeve pipe lower contact (7) by the wing nut (10) that is threaded in the sleeve pipe lower contact (7).
3. inner equilibrium electronic induction cementing head as claimed in claim 2 is characterized in that sleeve pipe lower contact (7) the inner conical face that male-tapered face described and taper joint (6) is tightly connected mutually is provided with sealing ring (71).
4. inner equilibrium electronic induction cementing head as claimed in claim 1 is characterized in that described electronic induction tester (9) is fixed on body (2) outer wall by clip.
5. inner equilibrium electronic induction cementing head as claimed in claim 1 is characterized in that described electronic induction tester (9) is fixed on body (2) and goes up 80mm place, backing pin assembly (5) below.
6. inner equilibrium electronic induction cementing head as claimed in claim 1 is characterized in that pressure compensation opening (81) on the described lining (8) is by axially being located at some the grooves (82) on lining (8) outer wall and being positioned at groove (82) two ends, being communicated with radial direction through hole (83) formation of groove (82) and lining (8) endoporus.
7. inner equilibrium electronic induction cementing head as claimed in claim 6, it is characterized in that evenly being provided with on the outer wall of described lining (8) three is four groups of grooves (82) of one group.
8. inner equilibrium electronic induction cementing head as claimed in claim 6, the width that it is characterized in that described groove (82) is 5-6mm.
9. inner equilibrium electronic induction cementing head as claimed in claim 6, the circumferential interval angle that it is characterized in that adjacent two grooves (82) of described every group of groove (82) are 10 degree.
10. inner equilibrium electronic induction cementing head as claimed in claim 6, the diameter that it is characterized in that described through hole (83) is 5-6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201588845U CN202047779U (en) | 2011-05-18 | 2011-05-18 | Inner balance electronic sensing cementing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201588845U CN202047779U (en) | 2011-05-18 | 2011-05-18 | Inner balance electronic sensing cementing head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202047779U true CN202047779U (en) | 2011-11-23 |
Family
ID=44988090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201588845U Expired - Fee Related CN202047779U (en) | 2011-05-18 | 2011-05-18 | Inner balance electronic sensing cementing head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202047779U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295265A (en) * | 2014-10-15 | 2015-01-21 | 中国石油集团西部钻探工程有限公司 | Easy-opening cementing head with indication function |
| CN112253043A (en) * | 2020-12-09 | 2021-01-22 | 中国石油天然气集团有限公司 | High-pressure well cementing cement head |
-
2011
- 2011-05-18 CN CN2011201588845U patent/CN202047779U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295265A (en) * | 2014-10-15 | 2015-01-21 | 中国石油集团西部钻探工程有限公司 | Easy-opening cementing head with indication function |
| CN112253043A (en) * | 2020-12-09 | 2021-01-22 | 中国石油天然气集团有限公司 | High-pressure well cementing cement head |
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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: 20111123 Termination date: 20140518 |