CN208040328U - A kind of well head auxiliary casing centralization seat slip system - Google Patents
A kind of well head auxiliary casing centralization seat slip system Download PDFInfo
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- CN208040328U CN208040328U CN201820385136.2U CN201820385136U CN208040328U CN 208040328 U CN208040328 U CN 208040328U CN 201820385136 U CN201820385136 U CN 201820385136U CN 208040328 U CN208040328 U CN 208040328U
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- spud leg
- sleeve
- well head
- casing
- jack
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Abstract
The utility model discloses a kind of well head auxiliary casing centralizations to sit slip system, including bolt, spud leg, spud leg sleeve, connector, fast connecting fastener, jack, two halves formula cannula sleeve and arc wiper block, the two halves formula cannula sleeve is fastened and connected to form a complete annulus cannula sleeve by docking the fast connecting fastener at both ends, the annulus cannula sleeve outside is to be connected with 4 connectors uniformly at intervals with 90 degree, on the other end welding spud leg sleeve of the connector, the spud leg is inserted into spud leg sleeve, spud leg upper end is flexibly connected jack by bolt, the flexible rod end of jack is connected with arc wiper block.The utility model solves self-elevating drilling platform installation casing clamp watt-hour after casing sits bottom causes casing slip that can not install high cost problem caused by the operating risk brought to designated position and low timeliness because bunch tube is not placed in the middle.
Description
Technical field
The utility model belongs to the drilling engineering field of the resources such as petroleum gas, specifically, being that one kind being suitable for sea
Upper well head chain-wales service well inner sleeve string is placed in the middle in casing head, so that casing slip is quick installed at corresponding positions in casing head
The well head auxiliary casing centralization set sits slip system.
Background technology
Ocean shallow water operations area generally uses self-elevating drilling platform to carry out drillng operation, and shaft mouth operation is confined to limited sky
Between well head chain-wales on carry out, space and resource are limited.After well cementing operation, bunch tube is first sat into bottom, top, which is driven, to hang
120klbs weight (including own wt is driven on top) is hung, well head, which is increased pipe, connect opening with casing head, hangs and will increase using row
The upper units such as pipe, preventer, oviduct lift, and raising pipe is made to detach 1~2 meter with casing head, wipe clean outside well inner sleeve
Casing slip is pre-installed on sleeve outer wall by wall, and after adjustment bunch tube keeps its placed in the middle, casing slip is sent to referring in casing head
Positioning is set, and tightening casing slip fastening bolt makes its squeeze sealing member sealing sleeve pipe annular space, then lower caving drive release weight, makes set
Pipe string remaining weight is suspended on casing slip, then carries out lower step operation.
Currently, by offshore wellhead chain-wales working space and environmental restrictions, adjusting sleeve pipe string method placed in the middle and measure are limited,
And it is time-consuming and laborious, seriously affect operation timeliness；Meanwhile if drilling fluid is inadequate, casing slip cannot be smoothly installed in place, and be cut
After cutting top feeding casing, once casing slip cannot bear lower part bunch tube remaining weight and bunch tube is caused to glide, generate
" fish " accident.At present during operation on the sea, general adjustment casing centralization measure is as follows：1) using before and after drilling platforms derrick
It moves left and right drive top to drive, is suspended on the bunch tube that top is driven to drive to assist adjustment casing centralization, this method operation is not
Convenient, the equipment involved is excessive, once operation error, easily leads to catastrophic failure, and it is minimum to adjust amplitude；2) sharp
The other wells in periphery are bundled on mounted casing head with pneumatic hoist one end, and the other end, which is bundled on bunch tube, carries out traction tune
Whole, the precondition that this method uses is the object for having pneumatic hoist binding to provide fixed pulling force in appropriate orientation, and well head is made
Industry platform space is limited, it is possible to provide the place of binding is few, and when especially needing to provide pulling force by the board, this method cannot achieve.
3) it is bundled on bunch tube using suspender belt, operating personnel manually provides pulling force and is adjusted, and the pulling force that this method provides extremely has
Limit, and it is time-consuming and laborious, it cannot be satisfied job requirements.
Due to marine rig Fei Gao, it is desirable that high operation timeliness is effectively to reduce operating cost, well head chain-wales at present
It adjusts bunch tube method placed in the middle and measure limitation is big, and operation timeliness is low, cannot be satisfied high-efficient homework requirement, therefore, has very much
At sea well head chain-wales auxiliary casing centralization sits slip system to necessary utility model one kind, easy for installation, not by limited space,
It is easy to operate, casing centralization can be quickly adjusted so that casing slip is mounted on corresponding position in casing head, to reduce operation
Risk improves operation timeliness, reduces operating cost.
Utility model content
In order to overcome above-mentioned the shortcomings of the prior art, provides a kind of well head auxiliary casing centralization and sits slip system,
It is placed in the middle that bunch tube is at sea fast implemented on well head chain-wales, so that casing slip can smoothly enter into designated position in casing head.
In order to solve the above technical problems, the utility model takes following technical scheme：
A kind of well head auxiliary casing centralization seat slip system, including bolt, spud leg, spud leg sleeve, connector, quickly connection
Button, jack, two halves formula cannula sleeve and arc wiper block, the two halves formula cannula sleeve is by docking both ends in hook-shaped
Fast connecting fastener is fastened and connected to form a complete annulus cannula sleeve, the annulus cannula sleeve internal diameter and surface conductor pipe
Outer diameter matches, and is mounted on surface conductor pipe, and the annulus cannula sleeve outside is to be connected with 4 connections uniformly at intervals with 90 degree
The other end of part, the connector is welded on spud leg sleeve, and the opening of spud leg sleeve and two halves formula cannula sleeve is vertical
Upward, the spud leg sleeve diameter is matched with spud leg outer diameter, and the spud leg is plugged in spud leg sleeve, spud leg lower end and brill
Well platform deck spot welding is fixed, and spud leg upper end is flexibly connected jack by bolt, and the flexible rod end of jack is connected with arc
Wiper block, the arc wiper block are contacted by arc shaped inside with bunch tube outer wall.
The annulus cannula sleeve may be configured as 2~5 layers.
The annulus cannula sleeve height is 20~30cm, thickness 5cm.
The connector thickness is 10cm, and width 10cm, length is the flat iron block of 10~30cm.
The spud leg sleeve outer diameter is bigger 10cm than internal diameter, is highly 15~20cm.
The spud leg outer diameter is the solid cylinder of 20cm, and length is 1~2 meter.
The arc wiper block height is 15cm, thickness 5cm, is in 30~45 degree of arc-shapeds.
The utility model has the following advantages：
It is placed in the middle in casing head that the utility model can fast implement the well inner sleeve string after sitting bottom, solves jack-up rigs
Platform installation casing clamp watt-hour after casing sits bottom causes casing slip that can not install to designated position because bunch tube is not placed in the middle
High cost problem caused by the operating risk and low timeliness brought.
(1) simple in structure, easy to process, cost of investment is low, reusable.
(2) application prospect is good, is widely used in offshore wellhead chain-wales auxiliary casing centralization and sits slips operation.
(3) execute-in-place is simple, efficient not by space and environmental restrictions, no operatton risk.
Description of the drawings
Fig. 1 is the side structure schematic view of the utility model；
Fig. 2 is the annulus cannula sleeve overlooking structure diagram of the utility model.
In figure：1- is bolted；2- spud legs；3- spud leg sleeves；4- connectors；5- fast connecting fasteners；6- jack；7- two
Half formula cannula sleeve；8- arc wiper blocks.
Specific implementation mode
The utility model is described in further detail with specific implementation mode below in conjunction with the accompanying drawings.
A kind of well head auxiliary casing centralization sits slip system, including bolt 1, spud leg 2, spud leg sleeve 3, connector 4, quickly
Junction button 5, jack 6, two halves formula cannula sleeve 7 and arc wiper block 8, the two halves formula cannula sleeve 7 pass through docking two
End is fastened and connected to form a complete annulus cannula sleeve in hook-shaped fast connecting fastener 5, in the annulus cannula sleeve
Diameter is matched with surface conductor pipe outer diameter, is mounted on surface conductor pipe, with 90 degree for uniformly at intervals on the outside of the annulus cannula sleeve
4 connectors 4 are connected with, the other end of the connector 4 is welded on spud leg sleeve 3, spud leg sleeve 3 and two halves formula casing
The opening of sleeve 7 it is vertical upward, 3 internal diameter of spud leg sleeve is matched with 2 outer diameter of spud leg, and the spud leg 2 is plugged on stake
In leg sleeve 3,2 lower end of spud leg is fixed with the spot welding of drilling platforms deck, and 2 upper end of spud leg is flexibly connected jack 6 by bolt 1,
The flexible rod end of jack 6 is connected with arc wiper block 8, and the arc wiper block 8 passes through arc shaped inside and bunch tube outer wall
Contact；The jack 6 can provide 2~5 tons of thrust, and telescopic rod has enough elongations, is mainly used for arc and helps
Positive block 8 is that well inner sleeve string provides required thrust between two parties.
The annulus cannula sleeve may be configured as 2~5 layers, and being inserted into spud leg sleeve 3 for spud leg 2 provides enough stability
And vertical property.
The annulus cannula sleeve height is 20~30cm, thickness 5cm.
4 thickness of connector is 10cm, and width 10cm, length is the flat iron block of 10~30cm.
3 outer diameter of spud leg sleeve is bigger 10cm than internal diameter, is highly 15~20cm, spud leg sleeve 3 by connector 4 with
Two halves formula cannula sleeve 7 is connected to form a whole, spud leg sleeve 3 and the opening of two halves formula cannula sleeve 7 it is vertical upward, be stake
Leg 2 provides cross force.
2 outer diameter of spud leg is the solid cylinder of 20cm, and length is 1~2 meter.
8 height of arc wiper block is 15cm, thickness 5cm, is in 30~45 degree of arc-shapeds, arc-shaped inner surface
The contact area with well inner sleeve string and righting bunch tube effect with increase.
Operation principle：
1) preparation work：1. having measured surface conductor pipe residue length on well head chain-wales in advance, determined according to its length
Use several layers of cannula sleeves；2. cannula sleeve is mounted on surface conductor pipe, fast connecting fastener is buckled, and allows levels spud leg set
The bore of cylinder is on same vertical line；3. by spud leg, be bolted, jack, arc wiper block are welded, and are hung to
Well head chain-wales；4. according to well inner sleeve string specification, selects jack tonnage and elongation and mark；5. being connected by bolt
It connects adjustment jack and is in vertical state, with spud leg at a vertical line；6. getting out electric welding equipment in well head chain-wales；7. preparing
Good jack iron；
2) well head is torn open：1. lower caving is driven after well cementation, bunch tube is sat into bottom, top drives and hangs 120klbs weight；2. clear
Sky increases the drilling fluid between pipe, oviduct, preventer and bunch tube annular space；3. being knocked out pipe is increased with casing hook bolt；④
On watch out for spray apparatus row and hang, pipe will be increased and detach 1~2 meter with casing head；
3) casing slip is pre-installed：1. wiping clean the drilling fluid on bunch tube outer wall；2. casing head upper surface covers two halves formula
Sheet iron；3. placing casing slip on sheet iron, it is pre-installed on bunch tube outer wall, casing slip can be freely up and down movable；
4) installation auxiliary casing centralization sits slip system：It is inserted 1. 4 spud legs on well head chain-wales are distributed by compressed air hoist
Enter in multilayer spud leg sleeve；2. by spud leg lower end and well head chain-wales spot welding；3. jack elongation end is reduced to most short and horizontal
It places；
5) casing centralization is adjusted：1. rotating very heavy top switch using extension bar, 1 jack is extended to mark lengths；
2. opposite jack is extended to mark lengths using extension bar；3. the 3rd jack is extended to label using extension bar
Length；4. the 4th jack is extended to mark lengths using extension bar；
6) casing slip is installed：1. all jack are extended to mark lengths, bunch tube is in center condition；2. rapid
The sheet iron for detaching casing head upper end makes casing slip free-falling；3. hit with a hammer casing slip upper surface, until upper end
Identity distance casing head upper surface 7cm；4. tightening casing slip upper surface fastening bolt, squeeze sealing member forms sealing；
7) weight is driven on release top：1. repeatedly lower caving is driven, the tops 20~30klbs are discharged every time and drive weight, observation bunch tube is
No downslide；2. confirming that casing slip installation is correct, bunch tube does not glide, and all weight is driven on release top, sits casing slip operation knot
Beam；
8) dismounting auxiliary casing centralization sits slip system：1. jack elongation end is reduced to most short, it is placed in vertical state；
2. removal spud leg lower end is connect with well head chain-wales；3. spud leg is extracted spud leg sleeve using compressed air hoist；4. opening quickly connects
Buckle unloads two halves formula cannula sleeve from surface conductor pipe；It is preserved 5. all device features are hung at drilling platforms spaciousness.
It is described above by example, but the utility model is not limited to particular form disclosed above, it should be understood that, this
All deformations or replacement of the technical staff in field to technical solutions of the utility model, all without departing from the utility model technical side
The spirit and scope of case.
Claims (7)
1. a kind of well head auxiliary casing centralization sits slip system, it is characterised in that：Including bolt (1), spud leg (2), spud leg sleeve
(3), connector (4), fast connecting fastener (5), jack (6), two halves formula cannula sleeve (7) and arc wiper block (8), it is described
Two halves formula cannula sleeve (7) is fastened and connected to form a complete annulus by docking both ends in hook-shaped fast connecting fastener (5)
Cannula sleeve, the annulus cannula sleeve internal diameter are matched with surface conductor pipe outer diameter, are mounted on surface conductor pipe, the annulus
With 90 degree to be connected with 4 connectors (4) uniformly at intervals on the outside of cannula sleeve, the other end of the connector (4) is welded on
On spud leg sleeve (3), the opening of spud leg sleeve (3) and two halves formula cannula sleeve (7) it is vertical upward, the spud leg sleeve
(3) internal diameter is matched with spud leg (2) outer diameter, and the spud leg (2) is plugged in spud leg sleeve (3), and spud leg (2) lower end is flat with drilling well
Platform deck spot welding is fixed, and spud leg (2) upper end is flexibly connected jack (6) by bolt (1), and the flexible rod end of jack (6) connects
It is connected to arc wiper block (8), the arc wiper block (8) is contacted by arc shaped inside with bunch tube outer wall.
2. well head auxiliary casing centralization according to claim 1 sits slip system, it is characterised in that：The annulus casing
Sleeve may be configured as 2~5 layers.
3. well head auxiliary casing centralization according to claim 2 sits slip system, it is characterised in that：The annulus casing
Sleeve height is 20~30cm, thickness 5cm.
4. well head auxiliary casing centralization according to claim 1 sits slip system, it is characterised in that：The connector
(4) thickness is 10cm, and width 10cm, length is the flat iron block of 10~30cm.
5. well head auxiliary casing centralization according to claim 1 sits slip system, it is characterised in that：The spud leg sleeve
(3) outer diameter is bigger 10cm than internal diameter, is highly 15~20cm.
6. well head auxiliary casing centralization according to claim 1 sits slip system, it is characterised in that：The spud leg (2)
Outer diameter is the solid cylinder of 20cm, and length is 1~2 meter.
7. well head auxiliary casing centralization according to claim 1 sits slip system, it is characterised in that：The arc righting
Block (8) is highly 15cm, thickness 5cm, is in 30~45 degree of arc-shapeds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820385136.2U CN208040328U (en) | 2018-03-21 | 2018-03-21 | A kind of well head auxiliary casing centralization seat slip system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820385136.2U CN208040328U (en) | 2018-03-21 | 2018-03-21 | A kind of well head auxiliary casing centralization seat slip system |
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| Publication Number | Publication Date |
|---|---|
| CN208040328U true CN208040328U (en) | 2018-11-02 |
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ID=63948887
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820385136.2U Active CN208040328U (en) | 2018-03-21 | 2018-03-21 | A kind of well head auxiliary casing centralization seat slip system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108301790A (en) * | 2018-03-21 | 2018-07-20 | 中海石油(中国)有限公司湛江分公司 | A kind of well head auxiliary casing centralization sits slip system and application process |
| CN111136613A (en) * | 2020-01-20 | 2020-05-12 | 中国石油化工股份有限公司 | Beam-pumping unit horse head round pin dismounting device |
| CN113736951A (en) * | 2020-05-29 | 2021-12-03 | 上海梅山钢铁股份有限公司 | Off-line centering device for converter oxygen lance |
-
2018
- 2018-03-21 CN CN201820385136.2U patent/CN208040328U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108301790A (en) * | 2018-03-21 | 2018-07-20 | 中海石油(中国)有限公司湛江分公司 | A kind of well head auxiliary casing centralization sits slip system and application process |
| CN108301790B (en) * | 2018-03-21 | 2024-02-02 | 中海石油(中国)有限公司湛江分公司 | Well head auxiliary sleeve centering slip setting device and application method |
| CN111136613A (en) * | 2020-01-20 | 2020-05-12 | 中国石油化工股份有限公司 | Beam-pumping unit horse head round pin dismounting device |
| CN111136613B (en) * | 2020-01-20 | 2021-08-31 | 中国石油化工股份有限公司 | Beam-pumping unit horse head round pin dismounting device |
| CN113736951A (en) * | 2020-05-29 | 2021-12-03 | 上海梅山钢铁股份有限公司 | Off-line centering device for converter oxygen lance |
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