CN205089273U - Oil -gas well casing head - Google Patents
Oil -gas well casing head Download PDFInfo
- Publication number
- CN205089273U CN205089273U CN201520837895.4U CN201520837895U CN205089273U CN 205089273 U CN205089273 U CN 205089273U CN 201520837895 U CN201520837895 U CN 201520837895U CN 205089273 U CN205089273 U CN 205089273U
- Authority
- CN
- China
- Prior art keywords
- casing head
- hanger
- oil
- gas well
- lower floor
- 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.)
- Active
Links
Landscapes
- Gasket Seals (AREA)
Abstract
The utility model relates to an oil machinery especially relates to an oil -gas well casing head, including casing head body and hanger, the hanger sets up in the casing head originally internally, the casing head body includes upper casing head part and lower floor's casing head part, the hanger is overall structure, be provided with seal assembly between the hanger casing head body, through the hanger that sets up overall structure, the in -process operation of installation hanger is more convenient, and the messenger needs sealed position to reduce, because reduce sealed position, it seals to have set up seal assembly again, the sealed effect of the feasible annular space of attending between lower floor's casing head parts is better, it is not good to have solved the sealed effect of annular space that present oil -gas well casing head attend between lower floor's casing head parts, the more trouble technical problem of hanger installation, the utility model provides a hanger simple to operate just has good sealed oil -gas well casing head.
Description
Technical field
The utility model relates to petroleum machinery, particularly relates to a kind of Oil/gas Well casing head.
Background technology
Casing head is usually used in oil, in gas exploitation course, be arranged on surface pipe post upper end, be used to the well head fixedly creeping into well, connecting well muzzle tubing string, in order to the coupling assembling of supporting technology sleeve pipe and production string, can be used for sealing the annular space between each layer pipe, for installing preventer, tubing head, production tree provides transition to connect, and by two side mouths on casing head body, can carry out mending crowded mud, the construction operations such as monitoring and filling equilibrium liquid, at present, more common Oil/gas Well casing head mainly comprises casing head body and is arranged at the intrinsic hanger of casing head, hanger is made up of upper and lower two hanger parts, hanger parts are up and down entirely for inner screw sheath pipe thread connects, more inconvenient during installation, primary seal and secondary seal are set between hanger and casing head body, the annular space between levels casing head parts is made to form seal cavity, wherein primary seal is arranged between hanger and lower floor's casing head parts, for independent rubber sealing, comprise multiple rubber seal, secondary seal is be arranged between hanger and upper strata casing head parts, for BT sealing ring, reserve greasing space in this side simultaneously, greasing spatial joins grease pouring valve, after hanger is in place, stop-leak compound is injected by grease pouring valve, reach sealing effectiveness, in use, no matter be that rubber sealing or BT sealing ring add greasing sealing, effect is all undesirable, particularly rubber sealing, in use, there will be breach, the situations such as fracture, sealing effectiveness is caused to lose efficacy, simultaneously, BT sealing ring adds greasing sealing, due to needs assembling complete after carry out injection stop-leak compound again, operation comparatively bothers, and the stop-leak compound injected may be mixed with bubble or impurity, due to the amount injecting stop-leak compound can only be controlled by rule of thumb, the situation of not filling up reserved greasing space may be there is, make the annular space sealing effectiveness between levels casing head parts poor.
In sum, need the annular space sealing effectiveness that a kind of technical scheme solves between existing levels casing head parts at present badly bad, more troublesome defect installed by hanger.
Utility model content
The annular space sealing effectiveness that the object of the invention is to solve between existing levels casing head parts is bad, and more troublesome technical problem installed by hanger, provides a kind of hanger easy for installation and have the Oil/gas Well casing head of excellent sealing.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of Oil/gas Well casing head, comprise casing head body and hanger, described hanger is arranged in casing head body, described casing head body comprises upper strata casing head parts and lower floor's casing head parts, described hanger is overall structure, is provided with black box between described hanger and casing head body.By arranging integrally-built hanger, operate more convenient in the process of installation hanger, and the position that needs are sealed is reduced, because sealing station reduces, be provided with again black box to seal, the annular space sealing effectiveness between hanger and casing head body is better.
As the preferred version of the application, the interior outside of described hanger is provided with casing threads, and described hanger is connected by sleeve external thread with lower floor casing head parts.Be connected with lower floor casing head parts at hanger arranged outside sleeve external thread, only need during installation to rotate hanger in one direction, just can realize being connected and fixed between hanger and casing head body, the connection of casing threads is more fastening, decrease installation steps, make the installation of hanger more convenient fastening, save the set-up time.
As the preferred version of the application, described black box comprises once sealing and secondary seal, and described once sealing is arranged between hanger and lower floor's casing head parts, and described secondary seal is arranged between hanger and upper strata casing head parts.By arranging once sealing and secondary seal, once sealing and secondary seal jointly with the use of, the annular space sealing effectiveness between the levels casing head parts formed after making hanger and casing head body contacts is better.
As the preferred version of the application, described once sealing comprises metal o-ring and at least one rubber seal, and described metal o-ring is conical surface seal circle, and described metal o-ring matches with lower floor casing head member internal walls.By the metal o-ring that arranges at least one rubber seal and match with lower floor casing head member internal walls as once sealing, because metal o-ring is conical surface seal circle, form auto-excitation type between hanger and lower floor's casing head member internal walls to seal, sealing effectiveness is better, and metal sealing is more high temperature resistant compared with rubber seal, high pressure resistant, the effective reliability ensureing sealing, make further hanger be connected with casing head body after annular space sealing effectiveness between the levels casing head parts that formed better.
As the preferred version of the application, described secondary seal is general plug seal assembly, and described general plug seal assembly comprises the general plug sealing ring of at least two kinds of different sizes.By arranging general plug sealing ring as secondary seal, instead of original greasing sealing, make Oil/gas Well casing head installation process more convenient, and general plug sealing ring has certain high temperature high voltage resistant function, make sealing effectiveness better, meanwhile, by arranging the general plug sealing ring co-operation of at least two kinds of different sizes, the effect of sealing is ensured further.
compared with prior art, the beneficial effects of the utility model are:
By arranging integrally-built hanger, and inside and outside hanger, all casing threads is set, operate more convenient in the process of installation hanger, and the position making needs seal is reduced, because sealing station reduces, be provided with again black box to seal, the annular space sealing effectiveness between hanger and casing head body is better;
The beneficial effect of other embodiments of the application is:
1, by the metal o-ring that arranges at least one rubber seal and match with lower floor casing head member internal walls as once sealing, because metal o-ring is conical surface seal circle, form auto-excitation type between hanger and lower floor's casing head member internal walls to seal, sealing effectiveness is better, and metal sealing is more high temperature resistant compared with rubber seal, high pressure resistant, the effective reliability ensureing sealing, make further hanger be connected with casing head body after annular space sealing effectiveness between the levels casing head parts that formed better;
2, by arranging general plug sealing ring as secondary seal, instead of original greasing sealing, make Oil/gas Well casing head installation process more convenient, and general plug sealing ring has certain high temperature high voltage resistant function, make sealing effectiveness better, meanwhile, by arranging the general plug sealing ring co-operation of at least two kinds of different sizes, the effect of sealing is ensured further.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model Oil/gas Well casing head.
reference numeral
1-once sealing, 11-first rubber seal, 12-second rubber seal, 13-metal o-ring, 2-secondary seal, the general plug sealing ring of 21-first, the general plug sealing ring of 22-second, the general plug sealing ring of 23-the 3rd, 3-upper strata casing head parts, 4-hanger, 5-lower floor casing head parts.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
embodiment 1
As shown in Figure 1, a kind of Oil/gas Well casing head, comprise casing head body and hanger 4, described hanger 4 is arranged in casing head body, described casing head body comprises upper strata casing head parts 3 and lower floor's casing head parts 5, described hanger 4 is overall structure, the interior outside of hanger 4 is provided with casing threads, described hanger 4 is connected by sleeve external thread with lower floor casing head parts 5, only need to rotate hanger 4 in one direction during installation and just can realize being connected and fixed between hanger 4 and casing head body, decrease installation steps, make the installation of hanger 4 more convenient, save the set-up time,
Preferably, black box is provided with between described hanger 4 and casing head body, described black box comprises once sealing 1 and secondary seal 2, described once sealing 1 is arranged between hanger 4 and lower floor's casing head parts 5, described once sealing 1 comprises metal o-ring 13 and at least one rubber seal, as shown in the figure, described rubber seal comprises the first rubber seal 11 and the second rubber seal 12, described metal o-ring 13 is conical surface seal circle, described metal o-ring 13 matches with lower floor casing head parts 5 inwall, because metal o-ring 13 is conical surface seal circle, form auto-excitation type between hanger 4 and lower floor's casing head parts 5 inwall to seal, sealing effectiveness is better, and metal sealing is more high temperature resistant compared with rubber seal, high pressure resistant, the effective reliability ensureing sealing, simultaneously, by arranging integrally-built hanger, operate more convenient in the process of installation hanger 4, and the position making needs seal is reduced, because sealing station reduces, be provided with again black box to seal, make the annular space sealing effectiveness between hanger 4 and casing head body better further.
Preferably, described secondary seal 2 is arranged between hanger 4 and upper strata casing head parts 3, for general plug seal assembly, described general plug seal assembly comprises the general plug sealing ring of at least two kinds of different sizes, as shown in the figure, shown general plug seal assembly comprises the first general plug sealing ring 21, second general plug sealing ring 22 and the 3rd general plug sealing ring 23, by arranging general plug sealing ring as secondary seal, instead of original greasing sealing, make Oil/gas Well casing head installation process more convenient, and general plug sealing ring has certain high temperature high voltage resistant function, make sealing effectiveness better, simultaneously, by arranging the general plug sealing ring co-operation of at least two kinds of different sizes, the further effect ensureing sealing, make further hanger 4 be connected with casing head body after annular space sealing effectiveness between the upper strata casing head parts 3 that formed and lower floor's casing head parts 5 better.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. an Oil/gas Well casing head, comprise casing head body and hanger, described hanger is arranged in casing head body, described casing head body comprises upper strata casing head parts and lower floor's casing head parts, it is characterized in that, described hanger is overall structure, is provided with black box between described hanger and casing head body.
2. Oil/gas Well casing head as claimed in claim 1, it is characterized in that, inner side and the outer wall of described hanger are provided with casing threads, and described hanger is connected by sleeve external thread with lower floor casing head parts.
3. Oil/gas Well casing head as claimed in claim 2, it is characterized in that, described black box comprises once sealing and secondary seal, and described once sealing is arranged between hanger and lower floor's casing head parts, and described secondary seal is arranged between hanger and upper strata casing head parts.
4. Oil/gas Well casing head as claimed in claim 3, is characterized in that, described once sealing comprises metal o-ring and at least one rubber seal, and described metal o-ring is conical surface seal circle, and described metal o-ring matches with lower floor casing head member internal walls.
5. Oil/gas Well casing head as claimed in claim 4, it is characterized in that, described secondary seal is general plug seal assembly, and described general plug seal assembly comprises the general plug sealing ring of at least two kinds of different sizes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520837895.4U CN205089273U (en) | 2015-10-27 | 2015-10-27 | Oil -gas well casing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520837895.4U CN205089273U (en) | 2015-10-27 | 2015-10-27 | Oil -gas well casing head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205089273U true CN205089273U (en) | 2016-03-16 |
Family
ID=55479974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520837895.4U Active CN205089273U (en) | 2015-10-27 | 2015-10-27 | Oil -gas well casing head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205089273U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111963076A (en) * | 2020-08-05 | 2020-11-20 | 中国石油天然气集团有限公司 | Air-tight screw-connected pipe joint |
| CN116498245A (en) * | 2023-06-21 | 2023-07-28 | 山东宏丰智能装备有限公司 | Oil well casing head |
-
2015
- 2015-10-27 CN CN201520837895.4U patent/CN205089273U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111963076A (en) * | 2020-08-05 | 2020-11-20 | 中国石油天然气集团有限公司 | Air-tight screw-connected pipe joint |
| CN116498245A (en) * | 2023-06-21 | 2023-07-28 | 山东宏丰智能装备有限公司 | Oil well casing head |
| CN116498245B (en) * | 2023-06-21 | 2023-08-25 | 山东宏丰智能装备有限公司 | Oil well casing head |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203403854U (en) | Well mouth blowout preventer for large-diameter logging instrument | |
| CN205089273U (en) | Oil -gas well casing head | |
| CN204436325U (en) | Compression packer in hydraulically-controlled type | |
| CN104405297B (en) | There is the segmented oil drill rocker sealing structure | |
| CN203685106U (en) | Hydraulic control protector | |
| CN203961897U (en) | A kind of cement paste filling tube external packer envelope is altered instrument | |
| CN111520099A (en) | Split type large-traffic casing head of oil gas well | |
| CN202531080U (en) | Wellhead sealing hanger | |
| CN204252845U (en) | Be convenient to the segmented oil drill rocker of leakproof | |
| CN205330617U (en) | Novel annular space relief valve | |
| CN104963645A (en) | Cable-passing wellhead for intelligent separate injection of cables | |
| CN202970609U (en) | Coal seam water injection hole packer with novel pipe joint | |
| CN108915648B (en) | Sealing method suitable for high-temperature nitrogen injection coal seam drilling | |
| CN202991013U (en) | Connecting sealing structure | |
| CN201090144Y (en) | Inclined plane jack-in type closing joint connecting inner tube | |
| CN206190228U (en) | Petroleum pipeline coupling | |
| CN201635703U (en) | Sleeve pipe pressure test plugging device | |
| CN205422668U (en) | Water injection string pressure telescopic compensator | |
| CN106150455B (en) | Located type safety control | |
| CN205778688U (en) | Fire-burning huff-puff/fireflood well casing head | |
| CN204040927U (en) | Water filling deslagging gas drainage drill stem | |
| CN204552717U (en) | Located type safety control | |
| CN205876256U (en) | Spacer tube head is sealed to area bottom | |
| CN204252918U (en) | A kind of wellhead for production | |
| CN205117270U (en) | Multi -functional packing box pressure cap |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |