CN201443343U - Setting device for geothermal well casings - Google Patents
Setting device for geothermal well casings Download PDFInfo
- Publication number
- CN201443343U CN201443343U CN2009200144445U CN200920014444U CN201443343U CN 201443343 U CN201443343 U CN 201443343U CN 2009200144445 U CN2009200144445 U CN 2009200144445U CN 200920014444 U CN200920014444 U CN 200920014444U CN 201443343 U CN201443343 U CN 201443343U
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- CN
- China
- Prior art keywords
- setting
- casing
- geothermal well
- head
- production
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- Expired - Fee Related
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Abstract
The utility model relates to a setting device for geothermal well casings, which comprises a setting connector, a setting head and a setting seat, the setting head is arranged on the setting seat, and the lower end of the setting connector is screwed in the setting head. The utility model has the advantages of reasonable design, simple structure and reliable operation, the device utilizes a drilling rig and the setting head to hang a production casing on a surface casing, and utilizes the weight of the production casing to seal the upper part, thus thoroughly solving the defect that the prior hanger only can be used for hanging but not for sealing. Meanwhile, by using the device, the surface casing can be directly used for production as a pump chamber, consequently, the overlay segments of the production casing and the surface casing are reduced, and the cost of well completion is reduced.
Description
Technical field:
The utility model relates to a kind of downhole tool that is used for geothermal well probing well drilling technology.
Background technology:
Geothermal well probing, well-completing process both be different from oil well, were different from well again, and especially in the completion casing job, geothermal well is had higher requirement to surface pipe, production casing and tail pipe.Base area hot well casing programme design needs, (design is because hot water electric submersible pump bore is bigger like this about 50m to require production casing and surperficial sleeve pipe overlay segment, can only in surface pipe, be lowered to production), and overlay segment and screen casing top 200m adopt the well cementation mode of " wearing footwear, band cap ", this one-tenth well purpose is to prevent that the top water at low temperature from entering in the pit shaft, influences water temperature.Because adopt the method construction technology of hanger comparatively complicated at present, and for
The surface pipe that this diameter is bigger, the still immature product that does not have moulding of hanger technology needs the special processing of producer, and construction risk is bigger, if hanger is malfunctioning, fails protective casing is suspended on the surface pipe, then may cause geothermal well to be scrapped.In addition, this method is very high to the well cementation required precision of hanger overlay segment, and difficulty of construction is bigger, has also increased the geothermal well cost.In recent years, the scene has proposed usefulness
With
The sleeve pipe reducing is connected to the technology of trapping on ground, utilizes
As pump chamber, with solution geothermal well production and well cementation problem, and obtained effect preferably, but this technology exists
Sleeve pipe with
The problem that the top layer overlay segment is long makes surface pipe become and produces invalid sleeve pipe, thereby causes waste.
The utility model content:
The purpose of this utility model is to provide a kind of can effectively solve suspension that the hanger technology used in the geothermal well completion casing job exists and the geothermal well sleeve pipe of overlay segment well cementation problem sets device.
The utility model purpose is achieved in that this kind ground thermal sleeve sets device by setting joint, set head, setting seat and forms, and its structure assembled relation is as follows: set head and place and set on the seat, set the joint lower end and be connected with setting with screw thread.Open when trapping at geothermal well one this envelope device set seat (be connected second of surface pipe and the 3rd between) the also G.I.H therewith that is connected with surface pipe, geothermal well two ends to bore and is lowered to the 177.8mm production casing when trapping, the tipping of its lower end sets head, sets joint and 5 " drilling tool; set head and set the inclined-plane and be seated at and set on the 45 ° inclined-planes, thereby realize sealing.After setting, the rotation drilling tool drives and to set the joint backward rotation, makes to set joint and set after head separates, and proposes drilling tool and finishes the technology of trapping.
The utility model is reasonable in design, and is simple in structure, reliable operation, and this device utilizes drilling tool, set head hangs on production casing on the surface pipe, and utilizes production casing weight to realize top seal, has thoroughly solved former hanger and can only hang the shortcoming that can not seal.Simultaneously, use this device directly to utilize surface pipe to produce, reduce production casing and surface pipe overlay segment, be lowered into the well expense as pump chamber.
Description of drawings:
Accompanying drawing is a general structure schematic diagram of the present utility model.
The specific embodiment:
Below in conjunction with accompanying drawing enforcement of the present utility model is illustrated.
As shown in the figure, the utility model wherein, sets joint 1 by setting joint 1, set 2, setting seat 3 and form, and external diameter is up big and down small, the top external diameter
Internal diameter is 410 drilling rod buttons (right-hand thread), can be with 5 " drilling tool is connected, it is 68/9 that the bottom outer cone is worn the pin thread button-type " drill collar button (left-hand thread).Setting 2 is the up big and down small short tube of an external diameter, the top external diameter
And become the bottom with 45 ° of conical surfaces
Be used to be suspended on and set seat 3 middle part conical surface of inboard wall, internal diameter by 203mm with 68/9 " the drill collar tapering becomes
The box button-type is 68/9 " drill collar button (left-hand thread), can with set joint 1 lower end and be connected; Lower outer diameter is
Pin thread, button-type are oval button (right-hand thread), are used for the below
Production casing links to each other.Setting seat 3 is the up big and down small pipe body of an external diameter, its top internal diameter
The band box, button-type is oval button (right-hand thread), is used for linking to each other with the top surface pipe; The middle part internal diameter with 45 ° of conical surfaces by
Become
Lower outer diameter
The pin thread button-type is oval button (right-hand thread), is used for linking to each other with the bottom surface pipe.
Claims (1)
1. a geothermal well sleeve pipe sets device, by setting joint (1), set head (2), setting seat (3) and forms, it is characterized in that: set head (1) and place and set on the seat (3), set joint (1) lower end with screw thread with set (2) and be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200144445U CN201443343U (en) | 2009-06-08 | 2009-06-08 | Setting device for geothermal well casings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200144445U CN201443343U (en) | 2009-06-08 | 2009-06-08 | Setting device for geothermal well casings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201443343U true CN201443343U (en) | 2010-04-28 |
Family
ID=42548019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200144445U Expired - Fee Related CN201443343U (en) | 2009-06-08 | 2009-06-08 | Setting device for geothermal well casings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201443343U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988382A (en) * | 2010-08-31 | 2011-03-23 | 新奥科技发展有限公司 | Movable device and method for regulating underground flow direction of gasifying agent |
| CN102304935A (en) * | 2011-06-21 | 2012-01-04 | 邯郸市伟业地热开发有限公司 | Geothermal well outflow water temperature regulator |
| CN105804654A (en) * | 2016-03-16 | 2016-07-27 | 中石化绿源地热能开发有限公司 | Novel well bore structure and well completion method for geothermal well |
-
2009
- 2009-06-08 CN CN2009200144445U patent/CN201443343U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988382A (en) * | 2010-08-31 | 2011-03-23 | 新奥科技发展有限公司 | Movable device and method for regulating underground flow direction of gasifying agent |
| CN102304935A (en) * | 2011-06-21 | 2012-01-04 | 邯郸市伟业地热开发有限公司 | Geothermal well outflow water temperature regulator |
| CN102304935B (en) * | 2011-06-21 | 2013-11-06 | 邯郸市伟业地热开发有限公司 | Geothermal well outflow water temperature regulator |
| CN105804654A (en) * | 2016-03-16 | 2016-07-27 | 中石化绿源地热能开发有限公司 | Novel well bore structure and well completion method for geothermal well |
| CN105804654B (en) * | 2016-03-16 | 2019-02-05 | 中石化绿源地热能开发有限公司 | A kind of novel casing programme of geothermal well and completion method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100428 Termination date: 20160608 |