CN111577193B - Installation method of split casing head locking device - Google Patents
Installation method of split casing head locking device Download PDFInfo
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- CN111577193B CN111577193B CN201910121895.7A CN201910121895A CN111577193B CN 111577193 B CN111577193 B CN 111577193B CN 201910121895 A CN201910121895 A CN 201910121895A CN 111577193 B CN111577193 B CN 111577193B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/04—Casing heads; Suspending casings or tubings in well heads
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- Engineering & Computer Science (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Gasket Seals (AREA)
Abstract
The invention discloses an installation method of a split casing head locking device, which comprises the following steps: installing an anti-sinking slip at a proper position of the casing; mounting a two-piece lower tray by taking a bolt hole at the small end of the casing head body as a reference; mounting two-petal casing head bodies by taking the anti-sinking slips as an acting point, and enabling the two-petal casing head bodies to hold the casing; installing a lower I-shaped block combination on the basis of the small-end I-shaped groove of the casing head body; an I-shaped block combination is arranged on the basis of the large-end I-shaped groove of the casing head body; installing a slip combination by taking the inner conical surface of the casing head body as a reference; a positioning block is installed by taking a U-shaped groove on the upper end surface of the slip as a reference; mounting a sealing packing base on a sunken step surface in the casing head body, and mounting a sealing gasket ring and a sealing packing on the sunken step surface in the sealing packing base; and a sealing short section is installed on the basis of the bolt hole on the upper end surface of the casing head body. The invention aims to provide an installation method of a split casing head locking device, which is used for solving the installation operation guidance of a split casing head and improving the installation efficiency.
Description
Technical Field
The invention relates to the field of chemical equipment, in particular to an installation method of a split casing head locking device.
Background
In the process of oil and gas drilling, under the condition of meeting an emergent high-pressure oil-gas layer, well head equipment cannot meet the requirement of the emergent high-pressure condition in advance, well blowout accidents can occur, even the well head is burnt, the subsequent operation is very difficult, and a new well head can be installed only through a series of operations to continue drilling.
Wherein, the first structure of split sleeve pipe is favorable to quick installation, very big improvement the installation effectiveness, and reduced staff's operational risk. The utility model patent of the grant number is CN201047267Y, and the grant time is 2008 4 months 16 days provides one kind from two half side sleeve pipe body combinations, the oil gas well casing head of speedily carrying out rescue work that can install fast.
The patent document discloses an emergency casing head, but the problems that 4 slips are not centered and are not on the same horizontal plane, locking is invalid, a packing is easy to extrude, sealing is easy to be unreliable and the like exist, and the patent document does not describe an installation process.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides an installation method of a split casing head locking device, which is used for solving the installation operation guidance of a split casing head and improving the installation efficiency.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a method for installing a split casing head locking device comprises the following steps:
firstly, installing an anti-sinking slip at a proper position of a casing;
secondly, mounting a two-petal lower tray by taking a bolt hole at the small end of the casing head body as a reference;
thirdly, mounting two casing head bodies by taking the anti-sinking slips as an acting point, so that the two casing head bodies embrace the casing;
fourthly, mounting a lower I-shaped block combination on the basis of the small end I-shaped groove of the casing head body;
installing an I-shaped block combination on the basis of the large-end I-shaped groove of the casing head body;
installing a slip combination by taking the inner conical surface of the casing head body as a reference;
seventhly, a slip positioning block is installed by taking the U-shaped groove on the upper end surface of the slip assembly as a reference;
installing a sealing packing base by taking a sunken step surface in the casing head body as a reference;
ninthly, taking the sunken step surface in the sealed packing base as a reference, sleeving the sealing gasket ring outside the sleeve, and installing the sealing gasket ring on the sunken step surface in the sealed packing base;
the hole part is based on the sunken step surface in the sealing packing base, the sealing packing is sleeved outside the sleeve, and the sealing packing is arranged on the sunken step surface in the sealing packing base and is arranged on the sealing gasket ring;
In the second step, a boss is arranged on the lower tray, the boss is inserted into the inner hole of the casing head body, and the lower tray is fixed with the casing head body through a first fixing piece.
And step three, splicing two casing head bodies outside the casing and then installing the spliced casing head bodies at the upper end of the anti-sinking slip.
Furthermore, in the fourth step, the lower H-shaped block in the small-end H-shaped groove is fixed at the small end of the casing head body through a connecting block parallel to the long edge of the lower H-shaped block.
Furthermore, in the fifth step, the upper I-shaped block in the large-end tool-shaped groove is fixed at the large end of the casing head body through a positioning plate which is vertically crossed with the long edge of the upper I-shaped block.
Furthermore, in the step of sixthly, the slip combination is provided with four slips which are arranged in the inner conical surface of the casing head body together, and the upper end surfaces of the four slips are positioned on the same horizontal plane.
And in the seventh step, the U-shaped grooves are formed in the left side and the right side of the upper end face of each slip of the slip combination, the U-shaped grooves on the adjacent sides of the slip combination are spliced with each other, positioning blocks are arranged in the grooves, and the positioning blocks are fixed with the two U-shaped grooves at the splicing part of the slip combination through first connecting pieces.
Compared with the prior art, the invention has the following beneficial effects:
through setting up concise installation procedure, accomplish the casing head body in proper order, the installation regulation of I-shaped piece combination, slips combination, sealing base, sealed packing and sealed nipple joint, the installation technology step is clear and definite, the step is less, has greatly simplified assembly workman's work burden, has improved split type casing head's installation effectiveness effectively.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a casing head body according to the present invention;
FIG. 3 is a schematic top view of an upper I-shaped block according to the present invention;
FIG. 4 is a schematic view of the slip assembly of the present invention.
Reference numerals:
1-casing head body, 2-sealing packing base, 3-first connecting piece, 4-positioning block, 5-anti-channeling bolt, 6-sealing packing, 7-sealing packing ring, 8-second connecting piece, 9-slip combination, 10-third connecting piece, 11-connecting piece, 12-lower tray, 13-casing, 14-first fixing piece, 15-lower H-shaped block, 16-upper I-shaped block, 17-second fixing piece, 18-positioning plate, 19-sealing short section, 20-U-shaped groove, 101-left valve casing head, 102-right valve casing head, 103-inner conical surface, 104-big end tool groove, 105-small end tool groove and 121-boss.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 to 4, a method for installing a split casing head locking device includes the following steps:
installing anti-sinking slips at proper positions of the casing 13.
Secondly, the two-petal lower tray 12 is installed by taking the bolt hole at the small end of the casing head body 1 as a reference, and the method comprises the following specific steps: firstly, placing the left casing head 101 on the ground, enabling the small end of the left casing head to face upwards, and keeping the left casing head at a horizontal position; taking the inner hole at the small end of the left casing head 101 as a reference, inserting the boss 121 of the left lower tray 12 into the inner hole at the small end of the left casing head 101; aligning the through hole of the left valve lower tray 12 with the bolt hole at the small end of the left valve sleeve head 101, loading the left valve lower tray into the first fixing piece 14, and screwing the left valve lower tray with a wrench; the right valve cannula head 102 is attached to the right valve inferior tray 12 as described above.
Using the anti-sinking slip as an acting point, installing the two-piece casing head body 1, and enabling the two-piece casing head body 1 to embrace the casing 13, the concrete steps are as follows: moving the left casing head 101 to the position of the casing 13 by means of a crane, a forklift or a trolley and the like, and moving the left casing head 101 to the upper end of the anti-sinking slip so that the left casing head 101 is seated on the anti-sinking slip; the right casing head 102 is seated on the anti-sinking slip according to the method, so that the left casing head and the right casing head form a casing head body 1 to hold the casing 13.
Fourthly, the lower I-shaped block 15 combination is installed on the basis of the small end I-shaped groove 105 of the casing head body 1, and the concrete steps are as follows: the left and right casing heads are closed by external force, and the I-shaped grooves at the large and small ends are formed; respectively putting the two lower I-shaped blocks 15 into the small-end I-shaped groove 105 of the casing head body 1; the threaded holes in the left and right lower trays 12 are used as references, round holes in the two connecting blocks 11 are aligned with the threaded holes in the lower trays 12 respectively, the long edges of the connecting blocks 11 are parallel to the long edges of the lower I-shaped blocks 15, and then the connecting blocks are installed in the third connecting piece 10 and screwed by a wrench.
Installing an I-shaped block 16 combination on the basis of the large-end working groove 104 of the casing head body 1, and specifically comprising the following steps: the two upper i-shaped blocks 16 are respectively arranged in the big end I-shaped groove 104 of the casing head body 1: the threaded holes on the I-shaped blocks 16 are used as references, round holes on the positioning plate 18 are respectively aligned with the threaded holes on the upper I-shaped blocks 16, the long sides of the positioning plate 18 are perpendicular to the long sides of the lower I-shaped blocks 16, and then the positioning plate is installed in the second fixing piece 17 and is screwed by a spanner.
Sixthly, the slip combination 9 is installed by taking the inner conical surface 103 of the casing head body 1 as a reference, and the method comprises the following specific steps: taking the inner conical surface 103 of the casing head body 1 as a reference, putting the four-piece slip into the casing head body 1 and keeping the four-piece slip to form a circle; the slips are stirred by hands, so that the upper end faces of the four slips are on the same horizontal plane.
And seventhly, installing a positioning block 4 by taking the U-shaped groove 20 on the upper end surface of the slip assembly 9 as a reference, and specifically comprising the following steps: taking the U-shaped grooves 20 on two sides of the upper end surface of the slip combination 9 as a reference, splicing the U-shaped grooves 20 of the four-piece slip 9 to form four strip-shaped grooves, and placing the positioning block 4 in the strip-shaped grooves; the positioning block 4 is shifted by hand, so that the through hole on the end surface of the positioning block is aligned with the threaded hole on the upper end surface of the slip combination 9, the positioning block is arranged in the first connecting piece 3, and the positioning block is screwed by a special spanner; four positioning blocks 4 are respectively installed according to the method.
Installing a sealing packing base 2 by taking a sunken step surface in the casing head body 1 as a reference, and specifically comprising the following steps: the sinking step surface in the casing head body 1 is taken as a reference, and the sealing packing base 2 is installed; aligning a counter bore of an outer ring of the sealing packing base 2 with a threaded hole on a step surface in the casing head body 1; corresponding to the outer ring counter bores of the sealing packing base 2, the second connecting pieces 8 in the matched number are respectively arranged and screwed by a special spanner, so that the sealing packing base 2 and the casing head body 1 are connected into a whole; corresponding to the countersunk head threaded holes of the inner ring of the sealing packing base 2, the anti-channeling bolts 5 in the matched number are respectively installed and screwed by a special wrench, and at the moment, the anti-channeling bolts 5 press the slip combination 9 down to enable the slip combination 9 to tightly lock the sleeve 13.
Ninthly, installing a sealing gasket ring 7 by taking the sunken step surface in the sealing packing base 2 as a reference, and specifically comprising the following steps: the sealing gasket ring 7 is broken off by hand and sleeved outside the sleeve 13; and (3) moving the sealing gasket ring 7 downwards and mounting the sealing gasket ring on the sunken step surface in the sealing packing base 2.
The deep step face in the sealing packing base 2 is used as the benchmark in the R, installs sealing packing 6 on sealing backing ring 7, and concrete step is: sleeving the sealing packing 6 outside the sleeve 13; and (3) moving the sealing packing 6 downwards, and installing the sealing packing into the sunken step surface in the sealing packing base 2 and placing the sealing packing on the sealing gasket ring 7.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A method for installing a split casing head locking device is characterized by comprising the following steps:
firstly, installing an anti-sinking slip at a proper position of a casing;
secondly, mounting a two-petal lower tray by taking a bolt hole at the small end of the casing head body as a reference;
mounting two-petal casing head bodies by taking the anti-sinking slips as an acting point, so that the two-petal casing head bodies hold the casing;
fourthly, mounting a lower I-shaped block combination on the basis of the small end I-shaped groove of the casing head body;
installing an I-shaped block combination on the basis of the large-end I-shaped groove of the casing head body;
installing a slip combination by taking the inner conical surface of the casing head body as a reference;
seventhly, a slip positioning block is installed by taking the U-shaped groove on the upper end surface of the slip assembly as a reference;
eighthly, mounting a sealing packing base by taking a sunken step surface in the casing head body as a reference;
ninthly, taking the sunken step surface in the sealed packing base as a reference, sleeving the sealing gasket ring outside the sleeve, and installing the sealing gasket ring on the sunken step surface in the sealed packing base;
the hole part is based on the sunken step surface in the sealing packing base, the sealing packing is sleeved outside the sleeve, and the sealing packing is arranged on the sunken step surface in the sealing packing base and is arranged on the sealing gasket ring;
2. The method of installing a split casing head locking device of claim 1, wherein: in the second step, a boss is arranged on the lower tray, the boss is inserted into an inner hole of the casing head body, and the lower tray is fixed with the casing head body through a first fixing piece.
3. The method of installing a split casing head locking device of claim 1, wherein: and step three, splicing two casing head bodies outside the casing and then arranging the spliced casing head bodies at the upper end of the anti-sinking slip.
4. The method of installing a split casing head locking device of claim 1, wherein: and in the fourth step, the lower H-shaped block in the small-end H-shaped groove is fixed at the small end of the casing head body through a connecting block parallel to the long edge of the lower H-shaped block.
5. The method of installing a split casing head locking device of claim 1, wherein: in the fifth step, the upper I-shaped block in the large-end tool-shaped groove is fixed at the large end of the casing head body through a positioning plate which is vertically crossed with the long edge of the upper I-shaped block.
6. The method of installing a split casing head locking device of claim 1, wherein: and sixthly, the slip combination is provided with four slips which are arranged in the inner conical surface of the casing head body together, and the upper end surfaces of the four slips are positioned on the same horizontal plane.
7. The method of installing a split casing head locking device of claim 6, wherein: and seventhly, the U-shaped grooves are formed in the left side and the right side of the upper end face of each slip of the slip combination, the U-shaped grooves on the adjacent sides of the slip combination are spliced with each other, positioning blocks are arranged in the grooves, and the positioning blocks are fixed with the two U-shaped grooves at the splicing part of the slip combination through first connecting pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910121895.7A CN111577193B (en) | 2019-02-18 | 2019-02-18 | Installation method of split casing head locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910121895.7A CN111577193B (en) | 2019-02-18 | 2019-02-18 | Installation method of split casing head locking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111577193A CN111577193A (en) | 2020-08-25 |
| CN111577193B true CN111577193B (en) | 2022-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910121895.7A Active CN111577193B (en) | 2019-02-18 | 2019-02-18 | Installation method of split casing head locking device |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7392864B2 (en) * | 2005-07-15 | 2008-07-01 | Stinger Wellhead Protection, Inc. | Slip spool assembly and method of using same |
| CN202990942U (en) * | 2012-12-26 | 2013-06-12 | 江苏宏泰石化机械有限公司 | Double-seal Christmas tree for conveniently mounting coiled tubing |
| CN105275422A (en) * | 2014-05-29 | 2016-01-27 | 克拉玛依弘阳有限责任公司 | Thermal recovery casing head |
| CN104047551B (en) * | 2014-06-30 | 2017-02-22 | 江苏信得石油机械股份有限公司 | Novel flange quick locking device |
| CN107575172A (en) * | 2017-08-24 | 2018-01-12 | 中国海洋石油总公司 | A kind of slips installation tool |
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- 2019-02-18 CN CN201910121895.7A patent/CN111577193B/en active Active
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| CN111577193A (en) | 2020-08-25 |
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