CN202937209U - Lowering tool for well-mouth head - Google Patents
Lowering tool for well-mouth head Download PDFInfo
- Publication number
- CN202937209U CN202937209U CN 201220599400 CN201220599400U CN202937209U CN 202937209 U CN202937209 U CN 202937209U CN 201220599400 CN201220599400 CN 201220599400 CN 201220599400 U CN201220599400 U CN 201220599400U CN 202937209 U CN202937209 U CN 202937209U
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- CN
- China
- Prior art keywords
- support piece
- head
- well head
- axle
- drive block
- 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 - Fee Related
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Abstract
The utility model relates to a lowering tool for a well-mouth head. The lowering tool comprises a mandrel, upper supporting blocks, lower supporting blocks, driving blocks, locking rings and protective covers, wherein the upper supporting blocks and the lower supporting blocks are sleeved on the mandrel by virtue of bolts; the mandrels are connected with the driving blocks by threads; axial through holes formed in the driving blocks penetrate through the bolts to play a role in guidance; an opening elastic locking ring is arranged between each driving block and each lower supporting block; the protective covers are positioned on the top of the lowering tool and connected to the upper supporting blocks by virtue of bolts. By using the lowering tool, the lowering and the retraction to the well-mouth head can be effectively carried out, and the lowering tool has a simple structure and is convenient to mount and dismount, so that the fast mounting and the retraction of the well-mouth head can be realized, and the working efficiency is improved.
Description
Technical field
The utility model relates to a kind ofly transfers instrument for marine oil and gas production of water well head in sea, for underwater wellhead is transferred and installed.
Background technology
Because marine oil and gas exploitation has become the important development direction of energy development, the various sleeve pipes in support seabed, subsea wellheads head system its underpart, top carrying preventer and production tree, be the basis of recovering the oil under water.Most of installation for undersea device in marine oil and gas exploitation investment, therefore transfer instrument and easy installation procedure simply and easily, reduces installation cost, is the target that the marine oil and gas exploitation is pursued always.The existing oral instrument of transferring of marine oil and gas recovery well has the following disadvantages: 1, tool construction complexity, and parts are many, and the handling procedure complexity is time-consuming; 2, reliability is low, can not lock on request or discharge the well head head; 3, well head head decentralization process always has collision and friction.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of underwater wellhead and transfers instrument, and it can not only effectively be transferred and install the well head head, and handling procedure simple in structure is easy, can realize Fast Installation and the recovery of well head head, improves work efficiency.
The utility model for the technical scheme that the problem that solves above-mentioned proposition adopts is: a kind of well head head is transferred instrument, it is characterized in that including axle, and the axle middle part has screw thread to be connected with drive block, in the axial space between upper support piece and lower support piece; Described drive block periphery has axially extending bore, through bolt, plays guide effect, and the drive block Lower Half directly contacts with the opening elastic lock ring; Described opening elastic lock ring bottom is sat and to be placed on the lower support piece, and what there were interlock teeth groove and a well head head in outside transfers tooth engaged groove face phase configuration; Described upper support piece and lower support piece are bolted and play positioning action; The whole instrument of transferring is by the protective cover parcel be connected on the upper support piece, and protective cover is for the protection of outer wellhead parietal tooth groove.
Press such scheme, described inner annular axle, is characterized in that axle is a multidiameter, at scala media axle place, there is screw thread to be connected with drive block, the upper and lower two ends of axle endoporus has tapered thread, and upper end is for jointed rod or other sleeve pipes, and lower end is for connecting washover tool.
Press such scheme, described upper support piece annular entity has through hole, has a plurality of screwed holes on curtain plate.
Press such scheme, the described lower support piece outside has annular seal groove, for sealing ring is installed, on annular entity, has tapped through hole.
Press such scheme, inboard, described opening elastic lock ring upper end is that an inclined-plane coordinates with the drive block lower bevel.
Press such scheme, described protective cover, lower end is horn-like opening, upper transverse plane has the through hole of annular spread.
The beneficial effects of the utility model are: 1, the instrument of transferring has the exterior protection cover, prevents collision and the friction of well head head decentralization process, and plays guide effect; 2, adopt and be threaded, it is safe and reliable that live spindle moves down drive block; 3, the locking with the well head head by the realization of opening elastic lock ring, simple and convenient; 4, install, to discharge the well head head simple to operate, can realize Fast Installation and release, saved the set-up time, improved efficiency.
The accompanying drawing explanation
Fig. 1 is a schematic diagram of the present utility model.
Fig. 2 is the well head head schematic diagram of not locking of the present utility model.
Fig. 3 is locking well head head schematic diagram of the present utility model.
Fig. 4 is elastic locking ring schematic diagram of the present utility model.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model will be further described.
Consult Fig. 2, the utility model well head head is transferred instrument, comprises axle 1, stay bolt 2, lag bolt 3, protective cover 4, upper support piece 5, drive block 6, opening elastic locking ring 7, lower support piece 8 and sealing ring 9.
It is a multidiameter that the well head head is transferred tool mandrel 1, at scala media axle place, has screw thread to be connected with drive block.The multidiameter two ends self-assembling formation baffle plate at screw thread place is located the position of upper support piece 5 and lower support piece 8.In upper and lower two stomidiums of axle 1, tapered thread is arranged, the upper end screw thread is for jointed rod or other sleeve pipes, and the lower end screw thread is for connecting other washover tool.Drive block 6 is threaded connection on axle 1.On the annular entity of drive block 6, there is axially extending bore to coordinate with the screwed hole on upper support piece 5 axially extending bores and lower support piece 8, with stay bolt 2 phase configuration.Upper support piece 5 is sat and is placed on the boss of axle 1, is useful on the through hole through stay bolt 2 on annular entity, screwed hole is arranged, for protective cover 4 is installed on outer rim.On the annular entity of lower support piece 8, screwed hole is arranged, be positioned on axle 1 by stay bolt 2; Have annular seal groove on lower support piece 8 external diameters, for sealing ring 9 is installed.Opening elastic locking ring 7 is an annulus that place's opening is arranged, and outside is the locking slot phase configuration on dentation locking slot and well head head 10.Stay bolt 2 only lower end has screw thread, and for connecting lower supporting plate 8, middle roofbolt partly play the guiding role for drive block 6.
Installation of the present utility model and dispose procedure are: will fill the tapered thread of the instrument of transferring by axle 1 top and be connected on drilling rod, transfer in the well head head, rotation inner annular axle 1 makes it, with drive block 6, relative motion occurs, because the guide effect of stay bolt 2, drive block 6 can only descendingly be clamp-oned in opening elastic locking ring 7, cause opening elastic locking ring 7 distendings to be locked in the locking slot in the well head head, the well head head just is locked on whole instrument like this.The well head head is transferred to the conductor housing inside in seabed, after arriving installation site, the reversion drilling rod makes axle 1 reversion cause drive block 6 up, and opening elastic lock ring 7 is retracted, and whole instrument separates with the well head head, and whole installation process completes, and will carry back platform on instrument.
Claims (6)
1. a well head head is transferred instrument, it is characterized in that including axle (1), and axle (1) middle part has screw thread to be connected with drive block (6), in the axial space between upper support piece (5) and lower support piece (8); Described drive block (6) periphery has axially extending bore, through bolt (2), plays guide effect, and drive block (6) Lower Half directly contacts with opening elastic lock ring (7); Described opening elastic lock ring (7) bottom sits that to be placed on lower support piece (8) upper, and what there were interlock teeth groove and a well head head (10) in outside transfers tooth engaged groove face phase configuration; Described upper support piece (5) is connected and plays positioning action by bolt (2) with lower support piece (8); The whole instrument of transferring has protective cover (4) parcel be connected on upper support piece (5), and protective cover (4) is for the protection of outer wellhead parietal tooth groove.
2. well head head claimed in claim 1 is transferred instrument, it is characterized in that: axle (1) is a multidiameter, at scala media axle place, has screw thread to be connected with drive block (6), and the upper and lower two ends of axle (1) endoporus has tapered thread, upper end is for jointed rod or other sleeve pipes, and lower end is for connecting washover tool.
3. well head head claimed in claim 1 is transferred instrument, it is characterized in that: the annular entity of upper support piece (5) has through hole, has screwed hole on curtain plate.
4. well head head claimed in claim 1 is transferred instrument, it is characterized in that: the outside of lower support piece (8) has annular seal groove, for sealing ring (9) is installed, on annular entity, has tapped through hole.
5. well head head claimed in claim 1 is transferred instrument, it is characterized in that: the inboard, upper end of opening elastic lock ring (7) is that an inclined-plane coordinates with drive block (6) lower bevel.
6. well head head claimed in claim 1 is transferred instrument, it is characterized in that: protective cover (4) lower end is horn-like opening, and upper transverse plane has the through hole of annular spread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220599400 CN202937209U (en) | 2012-11-14 | 2012-11-14 | Lowering tool for well-mouth head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220599400 CN202937209U (en) | 2012-11-14 | 2012-11-14 | Lowering tool for well-mouth head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202937209U true CN202937209U (en) | 2013-05-15 |
Family
ID=48321453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220599400 Expired - Fee Related CN202937209U (en) | 2012-11-14 | 2012-11-14 | Lowering tool for well-mouth head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202937209U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452509A (en) * | 2012-11-14 | 2013-12-18 | 中国石油大学(华东) | Wellhead descending tool |
| CN106555560A (en) * | 2016-04-01 | 2017-04-05 | 中国石油大学(华东) | A kind of casing hanger under water and seal assembly decentralization instrument |
| CN107269244A (en) * | 2017-08-18 | 2017-10-20 | 上海霞为石油设备技术服务有限公司 | Ring packing assembly |
-
2012
- 2012-11-14 CN CN 201220599400 patent/CN202937209U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452509A (en) * | 2012-11-14 | 2013-12-18 | 中国石油大学(华东) | Wellhead descending tool |
| CN106555560A (en) * | 2016-04-01 | 2017-04-05 | 中国石油大学(华东) | A kind of casing hanger under water and seal assembly decentralization instrument |
| CN107269244A (en) * | 2017-08-18 | 2017-10-20 | 上海霞为石油设备技术服务有限公司 | Ring packing assembly |
| CN107269244B (en) * | 2017-08-18 | 2023-07-04 | 上海霞为石油设备技术服务有限公司 | Annular seal assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20141114 |
|
| EXPY | Termination of patent right or utility model |