CN202108454U - Test oil wellhead device with metal sealing structure - Google Patents
Test oil wellhead device with metal sealing structure Download PDFInfo
- Publication number
- CN202108454U CN202108454U CN2011200055805U CN201120005580U CN202108454U CN 202108454 U CN202108454 U CN 202108454U CN 2011200055805 U CN2011200055805 U CN 2011200055805U CN 201120005580 U CN201120005580 U CN 201120005580U CN 202108454 U CN202108454 U CN 202108454U
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- main valve
- head body
- tubing head
- casing head
- boll
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Abstract
A test oil wellhead device with a metal sealing structure comprises the following components: a Christmas tree, a casing head, an oil pipe hanger and a blowout preventer. The casing head is provided between the Christmas tree and the blowout preventer. The casing head comprises the following components: a casing head body with a through hole, a main valve and a jack screw. An upper end of the casing head body is connected with the Christmas tree through a main valve, and a lower end is connected with the blowout preventer. The casing head is provided with a pressure test unidirectional valve. The oil pipe hanger is provided between the casing head body and the main valve. A metal sealing steel ring is respectively provided at a part between the oil pipe hanger and the casing head body and a part between the oil pipe hanger and the main valve. The main valve is provided with a push rod. The test oil wellhead device with the metal sealing structure has the advantages of: high power and low cost. Repeated change of the blowout preventer in oil test of each layer is prevented thereby preventing repeated pressure test. After the blowout preventer is changed, the wellhead can be closed at any time thereby obtaining high safety, reducing risk and improving safety. Furthermore, change of a cross joint of the oil pipe is not required in oil test. Adjustment for an inner blowout preventing pipe and an outer blowout preventing pipe is not required. The oil pipe with a metal sealing structure facilitates observation in suspension.
Description
Technical field
The utility model relates to a kind of wellhead assembly, particularly a kind of tubing head.
Background technology
Present production tree is directly to be connected with casing head, and when carrying out the formation testing operation with production tree, preventer must change the outfit at every turn; The all necessary pressure testing of the preventer that at every turn changes the outfit, the time that changes the outfit is long, inefficiency; When changing the outfit preventer; Well head is in no control state, and is abnormally dangerous, and this operation procedure is loaded down with trivial details, lifting has a big risk.The drilling spool oil recovery four-way that changes the outfit because of height change need be reinstalled throttling, kill manifold, when the tubing hanger of metallic seal is installed, is difficult for observing, fragile metallic sealing section.
The utility model content
The purpose of the utility model just provides a kind of formation testing wellhead assembly of band shape metallic leak-proof structure simple in structure, easy to use, and it can avoid every layer of formation testing to repeat the preventer that changes the outfit, and prevents the repetition pressure testing; Well head can be closed at any time; As safe as a house, reduce risk, save many formation testing operation sequences; Improve effect, reduce the formation testing cost.
The purpose of the utility model is to realize through such technical scheme; It comprises production tree, casing head, boll-weevil hanger and preventer; Preventer is installed on the casing head; It is characterized in that: between production tree and preventer, be provided with tubing head, tubing head comprises tubing head body, main valve and the jackscrew of being with via hole, and the upper end of tubing head body is connected with production tree through main valve; The lower end of tubing head body is connected with preventer; Tubing head is provided with the pressure testing one way valve that communicates with via hole, and the boll-weevil hanger lower part is positioned at the via hole on tubing head body top, and the top of boll-weevil hanger is positioned at the hole of main valve; Be provided with the metallic seal steel ring between the via hole inwall of boll-weevil hanger and tubing head body and between the hole wall of boll-weevil hanger and main valve; Above the metallic seal steel ring, below be provided with upper branching holder, lower support seat, the upper/lower terminal face of metallic seal steel ring all is provided with and helps sealing groove, is respectively arranged with and helps the corresponding envelope boss that helps of sealing groove on upper branching holder, the lower support seat; The corresponding limited step in the via hole inwall lower support seat bottom of tubing head body; Hole wall at main valve is equipped with the corresponding limited step in upper branching holder bottom, is provided with the locking nut that is fixed on the metallic seal tubing hanger above the upper branching holder in below the lower support seat in the via hole of tubing head body and the hole of main valve, on main valve, is horizontally arranged with the push rod that can withstand the upper branching holder in the main valve hole.
In the utility model, be connected with production tree through main valve, the lower end of tubing head body is connected with preventer; Pressure testing one way valve through on the tubing head body carries out pressure testing, has avoided every layer of formation testing to repeat the preventer that changes the outfit, and has prevented the repetition pressure testing; Prevented to change the outfit behind the preventer; Well head can be closed as safe as a house at any time, has reduced risk, has improved safety.
During use; Excite the distortion of boll-weevil hanger metal o-ring to realize sealing through jackscrew; Under the intrinsic limited step acting in conjunction of tubing head; Make the envelope boss that helps of upper branching holder, lower support seat put in and help in the sealing groove; Force the left and right sides face of metallic seal steel ring to compress the inwall of via hole of external surface and the tubing head body of boll-weevil hanger respectively, thereby realize the positiver sealing between boll-weevil hanger and the tubing head body, sealing is identical with tubing head body hermetically-sealed construction with boll-weevil hanger between boll-weevil hanger and the main valve.Just with tubing head intrinsic by locking nut, lower support seat, upper branching holder direction in main valve of installing up down change into by on install down.
Owing to adopted technique scheme, the utlity model has following advantage:
1, avoids every layer of formation testing to repeat the preventer that changes the outfit, prevented the repetition pressure testing;
2, prevented to change the outfit behind the preventer, well head can be closed as safe as a house at any time, has reduced risk, has improved safety;
3, save many formation testing operation sequences, improve effect, reduced the formation testing cost;
4, during the drilling well, the oil pipe four-way that no longer changes the outfit during formation testing, inside and outside blowout prevention pipeline does not need to adjust again;
Be convenient to observe when 5, the tubing hanger of metallic seal being installed.
Description of drawings
The description of drawings of the utility model is following:
Fig. 1 is the mounting structure sketch map of the utility model;
Fig. 2 is the amplification rotation diagram of A among Fig. 1.
Among the figure: the ⒈ production tree; The ⒉ casing head; The ⒊ boll-weevil hanger; The ⒋ preventer; The ⒌ tubing head; The ⒍ via hole; ⒎ tubing head body; The ⒏ main valve; The ⒐ jackscrew; ⒑ metallic seal steel ring; The ⒒ upper branching holder; ⒓ lower support seat; ⒔ helps sealing groove; ⒕ helps the envelope boss; The ⒖ limited step; The ⒗ locking nut; The ⒘ push rod; The ⒙ ring gasket; 19. pressure testing one way valve.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further:
Like Fig. 1, shown in 2; The utility model comprises production tree 1, casing head 2, boll-weevil hanger 3 and preventer 4; Preventer 4 is installed on the casing head 2; It is characterized in that: between production tree 1 and preventer 4, be provided with tubing head 5; Tubing head 5 comprises tubing head body 7, main valve 8 and the jackscrew 9 of being with via hole 6; The upper end of tubing head body 7 is connected with production tree 1 through main valve 8, and the lower end of tubing head body 7 is connected with preventer 4, and tubing head 5 is provided with the pressure testing one way valve 19 that communicates with via hole 6; Boll-weevil hanger 3 lower parts are positioned at the via hole 6 on tubing head body 7 tops; The top of boll-weevil hanger 3 is positioned at the hole of main valve 8, is being provided with metallic seal steel ring 10 between via hole 6 inwalls of boll-weevil hanger 3 and tubing head body 7 and between the hole wall of boll-weevil hanger 3 and main valve, above the metallic seal steel ring 10, below be provided with upper branching holder 11, lower support seat 12; The upper/lower terminal face of metallic seal steel ring 10 all is provided with and helps sealing groove 13; Be respectively arranged with and help the corresponding envelope boss 14 that help of sealing groove 13 on upper branching holder 11, the lower support seat 12, the corresponding limited step 15 in via hole inwall lower support seat 12 bottoms of tubing head body 7 is equipped with the corresponding limited step 15 in upper branching holder 11 bottoms at the hole wall of main valve 8; Be provided with the locking nut 16 that is fixed on the metallic seal tubing hanger 3 above the upper branching holder 11 in below the lower support seat 12 in the via hole of tubing head the body 7 and hole of main valve 8, on main valve 8, be horizontally arranged with the push rod 17 that can withstand the upper branching holder in the main valve aperture of door.
In the utility model, be connected with production tree through main valve, the lower end of tubing head body is connected with preventer; Pressure testing one way valve through on the tubing head body carries out pressure testing, has avoided every layer of formation testing to repeat the preventer that changes the outfit, and has prevented the repetition pressure testing; Prevented to change the outfit behind the preventer; Well head can be closed as safe as a house at any time, has reduced risk, has improved safety.
During use; Excite the metal o-ring distortion of boll-weevil hanger 3 to realize sealing through jackscrew; Under limited step 15 actings in conjunction in tubing head body 7; Make the envelope boss that helps of upper branching holder, lower support seat put in and help in the sealing groove; Force the left and right sides face of metallic seal steel ring to compress the inwall of via hole of external surface and the tubing head body of boll-weevil hanger respectively, thereby realize the positiver sealing between boll-weevil hanger and the tubing head body, sealing is identical with tubing head body hermetically-sealed construction with boll-weevil hanger between boll-weevil hanger and the main valve.Just with in the tubing head body 7 by down towards locking nut 16, lower support seat 12, upper branching holder 11 direction main valve 8 in of installing change into by on installation down.
As shown in Figure 2, helping sealing groove 13 is that an A/F is gradually narrow type annular notch wide outside and narrow inside, help envelope boss 14 be one with help the gradually wide type annular boss of narrow inner width outward that is that sealing groove matches.Helping sealing groove 13 can also be the notch and the boss of the inwall of other any and arranged on left and right sides face that can force metallic seal steel ring 10 via hole inwall and main valve 8 of compressing oil pipe suspensorium lateral surface, tubing head body 7 respectively with helping envelope boss 14.
As shown in Figure 2, for anti-heads, improve sealing, the end face between tubing head body 7 and the main valve 8 is provided with ring gasket 18.
Claims (3)
1. formation testing wellhead assembly with shape metallic leak-proof structure; Comprise production tree (1), casing head (2), boll-weevil hanger (3) and preventer (4); Preventer (4) is installed on the casing head (2); It is characterized in that: between production tree (1) and preventer (4), be provided with tubing head (5); Tubing head (5) comprises tubing head body (7), main valve (8) and the jackscrew (9) of band via hole (6); The upper end of tubing head body (7) is connected with production tree (1) through main valve (8); The lower end of tubing head body (7) is connected with preventer (4); Tubing head (5) is provided with the pressure testing one way valve (19) that communicates with via hole (6); Boll-weevil hanger (3) lower part is positioned at the via hole (6) on tubing head body (7) top; The top of boll-weevil hanger (3) is positioned at the hole of main valve (8), being provided with metallic seal steel ring (10) between via hole (6) inwall of boll-weevil hanger (3) and tubing head body (7) and between the hole wall of boll-weevil hanger (3) and main valve, is provided with upper branching holder (11), lower support seat (12) in top, the below of metallic seal steel ring (10); The upper/lower terminal face of metallic seal steel ring (10) all is provided with and helps sealing groove (13); Be respectively arranged with and help the corresponding envelope boss (14) that helps of sealing groove (13) on upper branching holder (11), the lower support seat (12),, be provided with the corresponding limited step in upper branching holder (11) bottom (15) at the hole wall of main valve (8) at the corresponding limited step in via hole inwall lower support seat (12) bottom (15) of tubing head body (7); The top of the upper branching holder (11) in the below of the lower support seat (12) in the via hole of tubing head body (7) and the hole of main valve (8) is provided with the locking nut (16) that is fixed on the metallic seal tubing hanger (3), on main valve (8), is horizontally arranged with the push rod (17) that can withstand the upper branching holder in the main valve hole.
2. the formation testing wellhead assembly of band shape metallic leak-proof structure as claimed in claim 1; It is characterized in that: helping sealing groove (13) is that an A/F is gradually narrow type annular notch wide outside and narrow inside, help envelope boss (14) be one with help the gradually wide type annular boss of narrow inner width outward that is that sealing groove matches.
3. according to claim 1 or claim 2 the formation testing wellhead assembly of band shape metallic leak-proof structure, it is characterized in that: the end face between tubing head body (7) and the main valve (8) is provided with ring gasket (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200055805U CN202108454U (en) | 2011-01-10 | 2011-01-10 | Test oil wellhead device with metal sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200055805U CN202108454U (en) | 2011-01-10 | 2011-01-10 | Test oil wellhead device with metal sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202108454U true CN202108454U (en) | 2012-01-11 |
Family
ID=45433890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200055805U Expired - Lifetime CN202108454U (en) | 2011-01-10 | 2011-01-10 | Test oil wellhead device with metal sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202108454U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507841A (en) * | 2014-09-30 | 2016-04-20 | 中国石油天然气股份有限公司 | Nitrogen drilling anti-erosion wellhead apparatus |
| CN106401519A (en) * | 2016-10-21 | 2017-02-15 | 承德市开发区富泉石油机械有限公司 | Device and method for taking out broken cable in well under pressure |
| CN113494259A (en) * | 2020-04-01 | 2021-10-12 | 中国石油天然气集团有限公司 | Coiled tubing suspension device, coiled tubing wellhead mandrel type suspension structure and method |
-
2011
- 2011-01-10 CN CN2011200055805U patent/CN202108454U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507841A (en) * | 2014-09-30 | 2016-04-20 | 中国石油天然气股份有限公司 | Nitrogen drilling anti-erosion wellhead apparatus |
| CN106401519A (en) * | 2016-10-21 | 2017-02-15 | 承德市开发区富泉石油机械有限公司 | Device and method for taking out broken cable in well under pressure |
| CN106401519B (en) * | 2016-10-21 | 2019-01-22 | 承德市开发区富泉石油机械有限公司 | A kind of device and method with pressure taking out fracture cable in well |
| CN113494259A (en) * | 2020-04-01 | 2021-10-12 | 中国石油天然气集团有限公司 | Coiled tubing suspension device, coiled tubing wellhead mandrel type suspension structure and method |
| CN113494259B (en) * | 2020-04-01 | 2023-11-28 | 中国石油天然气集团有限公司 | Coiled tubing suspension device, coiled tubing wellhead mandrel type suspension structure and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120111 |