CN202970598U - High-pressure casing head component - Google Patents
High-pressure casing head component Download PDFInfo
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- CN202970598U CN202970598U CN 201220636365 CN201220636365U CN202970598U CN 202970598 U CN202970598 U CN 202970598U CN 201220636365 CN201220636365 CN 201220636365 CN 201220636365 U CN201220636365 U CN 201220636365U CN 202970598 U CN202970598 U CN 202970598U
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- Prior art keywords
- pressure
- hole
- casinghead
- testing
- casing head
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Abstract
The utility model provides a high-pressure casing head component which comprises a high-pressure casing head. The high-pressure casing head comprises an upper flange (A3), a lower flange (A9) and a drive pipe body (A4) which is arranged between the upper flange and the lower flange. The upper flange is connected with a drilling spool. The high-pressure casing head component is characterized in that the high-pressure casing head further comprises a vertical through hole (1), a first bypass through hole (12) and a second bypass through hole (13) are communicated with the vertical through hole (1) and are formed in the middle portion of the vertical through hole (1), a pressure test plug sealing step (A8) is further arranged in the vertical through hole (1) and is arranged under the bypass through holes which are formed in the vertical through hole. Due to the adoption of the casing head component with the structure, not only is loading capacity of the casing head reaches a required value, but also the connecting flanges of the casing head and flat valves which are on two sides of the casing head can reach rated values through pressure test, and work safety is improved.
Description
Technical field
The utility model relates to the wellhead equipment in a kind of petroleum drilling engineering, relates in particular to a kind of high-pressure casinghead and cooperation thereof.
Background technology
In a lot of oil exploitations, the purpose development layer buries deeply, part quaternary structure deep-well adopts 339.7mm * 250.83mm+250.83mm * 177.8mm two-stage casing head, during three spudding wells, bottom pressure has surpassed 69MPa, according to the principle that is complementary of stressor layer superlatively in selection of casing head pressure rating and barefoot interval, the one-level cover is selected 339.7mm * 250.83mm-69MPa casing head, but secondary does not have the 250.83mm * 177.8mm casing head of the 103.5MPa of coupling to select.
In addition, the secondary casing head pressure testing table terrace that uses at present is more than by-pass prot, can't be at the scene to the flap type pressure testing of casing head by-pass prot side to rated value, if before format time well cementation, the overflow closing well occurs, casing head both sides flap type is identical with the pressure rank that well head bears, if therefore not to casing head both sides flap type pressure testing, have the well control risk.
Therefore demand developing the 250.83mm that a kind of bearing capacity can reach 103.5MPa * 177.8mm casing head urgently, and the scene of realizing is to the pressure testing of this casing head and both sides flap type.
Summary of the invention
The utility model provides a kind of 339.7mm of being applicable to * (250.83mm+244.5mm) * 177.8mm sleeve structure (quaternary structure deep-well), the pressure-bearing rank is the casing head assembly of 103.5MPa, this casing head assembly middle sleeve head bottom is connected with 339.7mm * 250.83mm-69MPa casing head, and top is connected with drilling spool.And described casing head satisfies on-the-spot flap type pressure testing to casing head upper flange and both sides to rated value, eliminates the well control risk.
to achieve these goals, high-pressure casinghead assembly described in the utility model, it comprises high-pressure casinghead, described high-pressure casinghead includes upper flange, lower flange and be arranged at upper flange and lower flange between sleeve body, described upper flange is connected in drilling spool, described high-pressure casinghead also includes vertical through hole, the middle part of described vertical through hole is provided with the first by-pass prot and the second by-pass prot that is communicated with it, also be provided with the blanking plug for testing pressure sealed step in described vertical through hole, described blanking plug for testing pressure sealed step is arranged at the below of by-pass prot in vertical through hole.
Further, described high-pressure casinghead assembly also includes the abrasionproof lining that coordinates with described high-pressure casinghead, wherein, described abrasionproof lining includes abrasionproof bush body and seat hanging platform rank, described seat hanging platform rank are arranged at described abrasionproof bush body cylindrical top, and corresponding to the first step of high-pressure casinghead.
Further, described vertical through hole epimere of described high-pressure casinghead is provided with the first step be used to the described seat hanging platform rank that coordinate described abrasionproof lining, and described first step is arranged at the top of described the first by-pass prot and described the second by-pass prot.
Further, in described first by-pass prot of described high-pressure casinghead and the intersection of the second by-pass prot (13) and vertical through hole, the enlarged-diameter of described vertical through hole forms annular groove.
Further, described abrasionproof excircle of bushing bottom has the lining horizontal through hole that is connected with described abrasionproof lining through hole.
Further, described high-pressure casinghead assembly, it also includes the blanking plug for testing pressure that coordinates with described high-pressure casinghead, described blanking plug for testing pressure includes the blanking plug for testing pressure body, is arranged at the thread of described blanking plug for testing pressure body upper and lower, be arranged at the pressure testing sealed step of described blanking plug for testing pressure cylindrical middle and lower part, described pressure testing sealed step coordinates with the blanking plug for testing pressure sealed step of described high-pressure casinghead.
Adopted the casing head assembly of said structure, not only the bearing capacity of casing head has reached required value 103.5MPa, and in drilling process, the bottom of described casing head is connected with 339.7mm * 250.83mm-69MPa casing head, and the upper end is connected with drilling spool.The scene installs and utilizes the supporting blanking plug for testing pressure can be to the flap type pressure testing of this casing head adpting flange and both sides to rated value afterwards.In addition, improved the abrasionproof lining to reach the protective sleeve tube head and to guarantee that annular pressure can be passed to the casing pressure table.
Description of drawings
Fig. 1 is high-pressure casinghead structural representation sketch described in the utility model casing head assembly;
Fig. 2 is for being applied to abrasionproof bush structure simplified schematic diagram described in the utility model casing head assembly;
Fig. 3 is for being applied to blanking plug for testing pressure structural representation sketch described in the utility model casing head assembly.
The specific embodiment
In order better to understand the purpose of this utility model, design feature and function are described in detail below in conjunction with structure, the course of work and the function of accompanying drawing to preferred embodiment of the present utility model.
Abrasionproof lining and blanking plug for testing pressure that high-pressure casinghead assembly described in the utility model includes high-pressure casinghead, is used in conjunction with high-pressure casinghead.As shown in Figure 1, described high-pressure casinghead includes the sleeve body A4 between upper flange A3, lower flange A9 and upper flange and lower flange, and described upper flange is used for being connected with drilling spool, and is provided with jackscrew device on the upper flange cylindrical; Described lower adpting flange is used for being connected with first order casing head upper flange, and the lower flange cylindrical is designed with greasing hole, peep hole and pressure testing hole.Casing head also includes vertical through hole 1, and described vertical through hole 1 epimere is processed with first step 11, and this first step 11 is used for hanging corresponding with it sleeve pipe and abrasionproof lining B; There is that be communicated with it and the first by-pass prot 12 and second by-pass prot 13 that level connects of two symmetries at the middle part of described vertical through hole 1, and described two by-pass prots are connected with flap type A2 separately; Be connected in the flap type setting pressure Table A 6 of the first by-pass prot 12, the flap type that is connected in the second by-pass prot 13 is designed with thread flange A1.The intersection of described the first by-pass prot 12 and the second by-pass prot 13 and vertical through hole 1, the enlarged-diameter of described vertical through hole forms annular groove A7, this annular groove A7 adjusted vertical through hole and the abrasionproof lining that hereinafter will be mentioned between matched in clearance, and be used for increasing area of passage between casing head body and abrasionproof lining.In described vertical through hole 1, hypomere is processed with blanking plug for testing pressure sealed step A8, and this blanking plug for testing pressure sealed step A8 is machined in the below of by-pass prot in vertical through hole, thereby has realized by-pass prot and the pressure testing of the flap type that is communicated with by-pass prot; Described vertical through hole 1 hypomere also is processed with closed hole and annular groove (not demonstrating in Fig. 1), and described closed hole is the closed hole supporting with protective casing, and described annular groove is used for installing sealing ring.
As described in Figure 1 in embodiment, under the prerequisite that satisfies the drilling well of 215.9mm drill bit, consider simultaneously the requirement of laying the abrasionproof lining, the latus rectum of vertical through hole of described high-pressure casinghead is designed to particular value; The bottom of described high pressure collet head is provided with peep hole, greasing hole and pressure testing hole, is equipped with simultaneously sealing grease pouring valve, release nut.Be designed with jackscrew on described casing head upper flange A3, be used for described fixedly abrasionproof lining and casing hanger.
Fig. 2 is abrasionproof bush structure simplified schematic diagram described in the utility model casing head assembly, as shown in the figure, this abrasionproof lining B is installed in the vertical through hole 1 of casing head body, the seat hanging platform rank B2 that it includes abrasionproof bush body B1 and is arranged at described abrasionproof bush body cylindrical top, described seat hanging platform rank B2 is corresponding to the first step 11 of high-pressure casinghead A; Described abrasionproof excircle of bushing bottom has the lining horizontal through hole B3 that is connected with abrasionproof lining through hole.Specifically, in the present embodiment, the latus rectum of abrasionproof lining is 218mm, and its upper end is concordant with casing head top jackscrew, and the lower end prevents that to the pressure testing step casing head from wearing and tearing in drilling process; In abrasionproof lining bottom, offer 4 horizontal through hole with respect to casing head body bypass height symmetry, to increase abrasionproof lining and casing head body area of passage.
Fig. 3 is blanking plug for testing pressure structural representation sketch described in the utility model casing head assembly, as shown in the figure, described blanking plug for testing pressure C has the blanking plug for testing pressure body, be arranged at respectively the thread C1 of described blanking plug for testing pressure body upper and lower, be arranged at described blanking plug for testing pressure cylindrical middle and lower part, and the pressure testing sealed step C3 that coordinates with the blanking plug for testing pressure sealed step A8 of high-pressure casinghead, the top external diameter of described blanking plug for testing pressure is slightly less than the internal diameter of the vertical through hole 1 of high pressure collet head, the cylindrical of described blanking plug for testing pressure middle part also is provided with seal groove in addition, be provided with O RunddichtringO C2 in described seal groove, be used for the pressure testing process, inwall at vertical through hole 1 of described blanking plug for testing pressure and high-pressure casinghead forms sealing.
In produced on-site, at first, former well head is removed by drilling crew before three spud in, and the cutting technique sleeve pipe is polished to setting height(from bottom).Secondly, the lower flange A9 of high-pressure casinghead described in the utility model is mounted to first order casing head upper flange, upper flange A3 is connected to the drilling spool lower flange, and the drilling spool upper flange connects the preventer combination.Then, installation sleeve tube head both sides flat flange A2, thread flange A1 and pressure meter A6.After wellhead assembly installs, inject stop-leak compound by the greasing hole, then by the pressure testing hole to the major and minor sealing pressure testing of lower flange A9 to rated value.Then be lowered to blanking plug for testing pressure C, make the pressure testing sealed step C3 of blanking plug for testing pressure contact closely with casing head body inner via hole pressure testing sealed step A8, after using the preventer closing well, upper flange A3 is connected sealing be connected the sealing pressure testing with both sides flap type A2 to rated value.After pressure testing was complete, preventer was driven in pressure release, took out blanking plug for testing pressure, was lowered to abrasionproof lining B, made the interior first step of abrasionproof lining seat hanging platform rank B2 and vertical through hole of casing head body coordinate and contacted, and carry out drillng operation after fixing with jackscrew A5.
The above is only a kind of preferred embodiment of the present utility model; should be pointed out that for those skilled in the relevant art, under the prerequisite that does not break away from the utility model principle; trickle modification and the improvement made also should be considered as belonging to protection domain of the present utility model.
Claims (6)
1. high-pressure casinghead assembly, it comprises high-pressure casinghead (A), described high-pressure casinghead includes upper flange (A3), lower flange (A9) and be arranged at upper flange and lower flange between sleeve body (A4), described upper flange is connected in drilling spool, it is characterized in that, described high-pressure casinghead also includes vertical through hole (1), the middle part of described vertical through hole (1) is provided with the first by-pass prot (12) and the second by-pass prot (13) that is communicated with it, also be provided with blanking plug for testing pressure sealed step (A8) in described vertical through hole (1), described blanking plug for testing pressure sealed step (A8) is arranged at the below of by-pass prot in vertical through hole.
2. high-pressure casinghead assembly as claimed in claim 1, it also includes the abrasionproof lining (B) that coordinates with described high-pressure casinghead, it is characterized in that, described abrasionproof lining includes abrasionproof bush body (B1) and sits hanging platform rank (B2), described seat hanging platform rank (B2) are arranged at described abrasionproof bush body cylindrical top, and corresponding to the first step (11) of high-pressure casinghead.
3. high-pressure casinghead assembly as claimed in claim 1, it is characterized in that, described vertical through hole (1) epimere is provided with the first step (11) be used to the described seat hanging platform rank (B2) that coordinate described abrasionproof lining, and described first step (11) is arranged at the top of described the first by-pass prot (11) and described the second by-pass prot (12).
4. high-pressure casinghead assembly as claimed in claim 1, is characterized in that, in the intersection of described the first by-pass prot (12) and the second by-pass prot (13) and vertical through hole (1), the enlarged-diameter of described vertical through hole forms annular groove (A7).
5. high-pressure casinghead assembly as claimed in claim 2, is characterized in that, described abrasionproof excircle of bushing bottom has the lining horizontal through hole (B3) that is connected with described abrasionproof lining through hole.
6. high-pressure casinghead assembly as claimed in claim 1, it also includes the blanking plug for testing pressure that coordinates with described high-pressure casinghead, it is characterized in that, described blanking plug for testing pressure includes the blanking plug for testing pressure body, is arranged at the thread (C1) of described blanking plug for testing pressure body upper and lower, be arranged at the pressure testing sealed step (C3) of described blanking plug for testing pressure cylindrical middle and lower part, described pressure testing sealed step (C3) coordinates with the blanking plug for testing pressure sealed step (A8) of described high-pressure casinghead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220636365 CN202970598U (en) | 2012-11-27 | 2012-11-27 | High-pressure casing head component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220636365 CN202970598U (en) | 2012-11-27 | 2012-11-27 | High-pressure casing head component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202970598U true CN202970598U (en) | 2013-06-05 |
Family
ID=48511685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220636365 Expired - Lifetime CN202970598U (en) | 2012-11-27 | 2012-11-27 | High-pressure casing head component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202970598U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983349A (en) * | 2021-03-01 | 2021-06-18 | 江苏庆海石油机械有限公司 | Multi-flow through hole type safety cut-off flat valve |
| CN113323616A (en) * | 2020-02-28 | 2021-08-31 | 中国石油化工股份有限公司 | Well head well control device |
-
2012
- 2012-11-27 CN CN 201220636365 patent/CN202970598U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113323616A (en) * | 2020-02-28 | 2021-08-31 | 中国石油化工股份有限公司 | Well head well control device |
| CN112983349A (en) * | 2021-03-01 | 2021-06-18 | 江苏庆海石油机械有限公司 | Multi-flow through hole type safety cut-off flat valve |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |
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| CX01 | Expiry of patent term |