CN201747288U - Thermal recovery slip type casing head - Google Patents
Thermal recovery slip type casing head Download PDFInfo
- Publication number
- CN201747288U CN201747288U CN2010201750587U CN201020175058U CN201747288U CN 201747288 U CN201747288 U CN 201747288U CN 2010201750587 U CN2010201750587 U CN 2010201750587U CN 201020175058 U CN201020175058 U CN 201020175058U CN 201747288 U CN201747288 U CN 201747288U
- Authority
- CN
- China
- Prior art keywords
- hanger
- casing head
- casing
- sealing
- 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 - Lifetime
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a thermal recovery slip type casing head. The upper part of a hanger lower body (14) is connected with a hanger upper body (12) by an inner hexagon screw (17) through a sealing ring (13) to form a hanger body; a slip insert (11) is mounted on the inner wall of the hanger body by a screw (10); the hanger body is connected on the inner wall of a casing head body (18) through a press cap (8) to press the hanger body; the upper part of the casing head casing (18) is connected with an upper flange (2) by a screw (9); the inner wall of the upper flange (2) is positioned above the press cap (8) and is provided with upper, intermediate and low press blocks (5) and four inner and outer sealing rings (6); the upper, intermediate and low press blocks (5) and the four inner and outer sealing are fixed by check nuts (4) screwed on an oil layer casing; and a sealing locking sleeve (3) is mounted at the top on the inner wall of the upper flange (2). The utility model has an assembled type structure, is convenient to install, and achieves firm connection and favorable sealing property.
Description
Technical field
The utility model relates to the casing head that is used in oil well, is specifically related to a kind of thermal recovery type slip-type casing tube head.
Background technology
As everyone knows, present casing head complex structure is installed extremely inconvenience, and sealing effectiveness is poor.Especially now the thermal extraction casing head that uses generally adopts welding manner, and well head does not allow to be with work with torches under the normal condition, open-air welding is subjected to the restriction of industrial and mineral condition, adding after the welding can't heat treatment, the influence that expanded with heat and contract with cold by sleeve pipe is easy to generate crackle, welding quality does not reach requirement, causes casing head shortening in application life, the cost of production height.
Summary of the invention
The purpose of this utility model is: a kind of thermal recovery type slip-type casing tube head is provided, and modular construction, easy for installation, connect firmly good airproof performance.
Technical solution of the present utility model is: this casing head comprises the casing head housing, the hanger body, slip insert and upper flange, described hanger body is made up of hanger upper body and hanger lower body, above the hanger lower body, connect the hanger upper body through sealing ring and form the hanger body by soket head cap screw, the inwall of hanger body is installed slip insert by screw, slip insert is positioned at the inwall of hanger upper body, the hanger body is fixed on the inwall of casing head housing by pressure cap, push down the hanger body, the top of casing head housing connects upper flange by screw rod, the upper flange inwall is positioned at the pressure cap top and installs, in, lower lock block and inside and outside four sealing rings, on, in, lower lock block and inside and outside four sealing rings are fixed by the also cap that is screwed on the production string, and the sealing lock sleeve is installed at upper flange inwall top.
Wherein, casing head housing and upper flange contact surface are installed gasket ring.
Wherein, establish two public affairs on the outer wall of casing head housing, two Gongshang install blocking cap.
Installation procedure of the present utility model is as follows: when drilling team during down to a last production string, hanger body and slip insert are scurried in the oil-feed layer sleeve pipe; At this moment, gapped between slip insert and sealing ring and the production string, production string can be up and down; When cementing the well mud during Hou Ning, on carry production string, after carrying enough builder's tonnages, use the hammer mode, make the descending production string of embracing of slip insert, then, slowly transfer production string, descending drive hanger body is also descending because production string is conducted oneself with dignity, compresses seal, force sealing ring to expand, play sealing function toward both sides; After well cementing operation finished, well location left in drilling team, and well on the installation personnel screws slip insert housing screw and pressure cap, and pressure cap can not rise after production string, slip insert, hanger body are heated, and reached the production string effect of pushing down for the first time; Then, install, in, lower lock block and inside and outside four sealing rings, by be spun on the production string and cap compress, prevent that production string from gliding; At last, install flange by screw rod on the casing head housing, tighten the upper flange screw rod and make the gasket ring sealing, box by sealing locking set upper side, make the descending extruding briquetting of sealing lock sleeve, compresses seal with instrument rotation, sealing ring expands to both sides and plays sealing effectiveness, seals simultaneously below the lock sleeve near plane on the production string, played the effect of pushing down sleeve pipe for the second time, upper flange is connected the end flange of production tree four-way with studding by the studding hole.
The utlity model has following advantage:
1. modular construction is easy for installation, highly versatile, and drilling period has been shortened in well cementation, drilling well circulation, convenient, fast, reliable, is the most desirable reliable product of heavy oil wells exploitation.
Pressure cap and and the cap secondary push down production string, prevent that production string from gliding, connect firmly.
3. also cap is spun on the production string, does not need to weld production string, avoids the generation of crackle, improves the casing head quality, increases the service life.
4. the high-temperature resistant seal ring sealing is arranged in, the sealing of steel gasket ring is arranged outward, sealing is reliable, has guaranteed not leaking for a long time of oil gas, has reached the safety in production of oil recovery and the demand of environmental protection.
5. the effect of pressure cap and sealing lock sleeve is not risen production string, and other has and the effect of cap and slip insert, and production string does not glide yet.
Description of drawings
Fig. 1 is the utility model structural representation
Among the figure: 1 studding, 2 upper flanges, 3 sealing lock sleeves, 4 and cap, 5 briquettings, 6 sealing rings, 7 gasket rings, 8 pressure caps, 9 screw rods, 10 screws, 11 slip inserts, 12 hanger upper bodies, 13 sealing rings, 14 hanger lower bodies, 15 blocking caps, 16 pairs of public affairs, 17 soket head cap screws, 18 casing head housings.
The specific embodiment
As shown in Figure 1, this casing head comprises casing head housing 18, the hanger body, slip insert 11 and upper flange 2, described hanger body is made up of hanger upper body 12 and hanger lower body 14, above hanger lower body 14, connect hanger upper body 12 through sealing ring 13 and form the hanger body by soket head cap screw 17, the inwall of hanger body is installed slip insert 11 by screw 10, slip insert 11 is positioned at the inwall of hanger upper body 12, the hanger body is fixed on the inwall of casing head housing 18 by pressure cap 8, push down the hanger body, the top of casing head housing 18 connects upper flange 2 by screw rod 9, upper flange 2 inwalls are positioned at pressure cap 8 tops and install, in, lower lock block 5 and inside and outside four sealing rings 6, on, in, lower lock block and inside and outside four sealing rings are fixing by the also cap 4 that is screwed on the production string, and sealing lock sleeve 3 is installed at upper flange 2 inwall tops.
Wherein, casing head housing 18 is installed gasket ring 7 with upper flange 2 contact surfaces.
Wherein, on the outer wall of casing head housing 18, establish installation blocking cap 15 on two public 16, two public 16.
Installation procedure of the present utility model is as follows: when drilling team during down to a last production string, hanger body and slip insert 11 are scurried in the oil-feed layer sleeve pipe; At this moment, gapped between slip insert 11 and sealing ring 13 and the production string, production string can be up and down; When cementing the well mud during Hou Ning, on carry production string, after carrying enough builder's tonnages, use the hammer mode, make the slip insert 11 descending production strings of embracing, then, slowly transfer production string, descending drive hanger body is also descending because production string is conducted oneself with dignity, compresses seal 13, force sealing ring 13 to expand, play sealing function toward both sides; After well cementing operation finished, well location left in drilling team, and well on the installation personnel screws slip insert 11 housing screws 10 and pressure cap 8, and pressure cap 8 can not rise after production string, slip insert 11, hanger body are heated, and reached the production string effect of pushing down for the first time; Then, install, in, lower lock block 5 and inside and outside four sealing rings 6, upper, middle and lower briquetting 5 and inside and outside four sealing rings 6 by be screwed on the production string and cap 4 compress, prevent that production string from gliding; At last, install flange 2 by screw rod 9 on the casing head housing 18, tighten screw rod and make gasket ring 7 sealings, box by sealing lock sleeve 3 upper ends, make sealing lock sleeve 3 descending extruding briquettings 5, compresses seal 6 with instrument rotation, sealing ring 6 expands to both sides and plays sealing effectiveness, seals simultaneously below the lock sleeve near plane on the production string, played the effect of pushing down production string for the second time, upper flange 2 is connected the end flange of production tree four-way with studding 1 by the studding hole.
Claims (3)
1. thermal recovery type slip-type casing tube head, this casing head comprises casing head housing (18), the hanger body, slip insert (11) and upper flange (2), described hanger body is made up of hanger upper body (12) and hanger lower body (14), connect hanger upper body (12) by soket head cap screw (17) through sealing ring (13) in the top of hanger lower body (14) and form the hanger body, the inwall of hanger body is installed slip insert (11) by screw (10), slip insert (11) is positioned at the inwall of hanger upper body (12), the hanger body is connected on the inwall of casing head housing (18) by pressure cap (8), push down the hanger body, the top of casing head housing (18) connects upper flange (2) by screw rod (9), upper flange (2) inwall is positioned at pressure cap (8) top and installs, in, lower lock block (5) and inside and outside four sealing rings (6), on, in, lower lock block and inside and outside four sealing rings are fixing by the also cap (4) that is screwed on the production string, and sealing lock sleeve (3) is installed at upper flange (2) inwall top.
2. thermal recovery type slip-type casing tube head according to claim 1 is characterized in that: wherein, casing head housing (18) is installed gasket ring (7) with upper flange (2) contact surface.
3. thermal recovery type slip-type casing tube head according to claim 1 is characterized in that: wherein, establish two public (16) on the outer wall of casing head housing (18), two public affairs (16) go up installs blocking cap (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201750587U CN201747288U (en) | 2010-04-30 | 2010-04-30 | Thermal recovery slip type casing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201750587U CN201747288U (en) | 2010-04-30 | 2010-04-30 | Thermal recovery slip type casing head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201747288U true CN201747288U (en) | 2011-02-16 |
Family
ID=43581971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201750587U Expired - Lifetime CN201747288U (en) | 2010-04-30 | 2010-04-30 | Thermal recovery slip type casing head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201747288U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108386154A (en) * | 2017-12-11 | 2018-08-10 | 中国石油集团渤海钻探工程有限公司 | Completion becomes encapsulation tube head |
| CN108999585A (en) * | 2018-06-21 | 2018-12-14 | 中国石油天然气股份有限公司 | Thermal production casing head, thermal production system and well completion method |
| CN112392414A (en) * | 2020-11-12 | 2021-02-23 | 武汉博汇油田工程服务有限公司 | I-shaped large-drift-diameter manifold pry |
-
2010
- 2010-04-30 CN CN2010201750587U patent/CN201747288U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108386154A (en) * | 2017-12-11 | 2018-08-10 | 中国石油集团渤海钻探工程有限公司 | Completion becomes encapsulation tube head |
| CN108999585A (en) * | 2018-06-21 | 2018-12-14 | 中国石油天然气股份有限公司 | Thermal production casing head, thermal production system and well completion method |
| CN112392414A (en) * | 2020-11-12 | 2021-02-23 | 武汉博汇油田工程服务有限公司 | I-shaped large-drift-diameter manifold pry |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202520265U (en) | Gas production well head device with metallic seals | |
| CN202788725U (en) | Metal hard sealing oil tube head | |
| CN201747288U (en) | Thermal recovery slip type casing head | |
| CN201250626Y (en) | Wellhead suspension device adopting coiled tubing as production string | |
| CN2837504Y (en) | Water-proof oil production packer | |
| CN210068054U (en) | Single-cylinder double-well oil gas wellhead device | |
| CN203230376U (en) | Compression type setting packer capable of realizing multiple setting and unsetting | |
| CN105156060A (en) | Coiled tubing well sealing device | |
| CN103790542A (en) | Coiled tubing suspension sealing device for testing under high-temperature belt pressure and using method | |
| CN201486503U (en) | Integrated type horizontal oil extraction wellhead device | |
| CN117404043A (en) | Sucker rod multistage sealing blowout preventer | |
| CN201568000U (en) | Integral-type platform oil producing wellhead device | |
| CN212479153U (en) | Multifunctional metal sealing type casing head | |
| CN201053314Y (en) | Horizontal well flexible short section | |
| CN204691696U (en) | A kind of high-temperature metal sealing petroleum tube connector | |
| CN203515433U (en) | High-temperature coiled tubing suspension sealing device for testing under pressure | |
| CN201810255U (en) | Filling and producing dual-purpose casting head of combustion oil layer | |
| CN204899838U (en) | Compound bridging plug of ball cage | |
| CN201057014Y (en) | Multifunctional casing head | |
| CN200985766Y (en) | Hollow oil cylinder type no-killing well repairing well head device | |
| CN209875103U (en) | Sealing device for oil pipe head of gas production well head | |
| CN203201519U (en) | Metal sealing device for wellhead tubing hanger | |
| CN201568015U (en) | Micro-ring gap interporosity flow blocker | |
| CN101871322B (en) | Pressurizing and pushing device of sleeve pipe | |
| CN201874516U (en) | Sectional well completion packer for thermal production of heavy oil wells |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110216 |
|
| CX01 | Expiry of patent term |