CN201443343U - Setting device for geothermal well casings - Google Patents

Setting device for geothermal well casings Download PDF

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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
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
Application number
CN2009200144445U
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Chinese (zh)
Inventor
邓春来
梁敏
姚艳华
赵艳
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Liaohe Petroleum Exploration Bureau
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Liaohe Petroleum Exploration Bureau
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Filing date
Publication date
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Priority to CN2009200144445U priority Critical patent/CN201443343U/en
Application granted granted Critical
Publication of CN201443343U publication Critical patent/CN201443343U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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

A kind of geothermal well sleeve pipe sets device
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
Figure G2009200144445D00011
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
Figure G2009200144445D00012
With The sleeve pipe reducing is connected to the technology of trapping on ground, utilizes
Figure G2009200144445D00014
As pump chamber, with solution geothermal well production and well cementation problem, and obtained effect preferably, but this technology exists
Figure G2009200144445D00015
Sleeve pipe with
Figure G2009200144445D00016
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
Figure G2009200144445D00021
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
Figure G2009200144445D00031
And become the bottom with 45 ° of conical surfaces
Figure G2009200144445D00032
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
Figure G2009200144445D00033
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
Figure G2009200144445D00034
Pin thread, button-type are oval button (right-hand thread), are used for the below
Figure G2009200144445D00035
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
Figure G2009200144445D00037
Become Lower outer diameter
Figure G2009200144445D00039
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.
CN2009200144445U 2009-06-08 2009-06-08 Setting device for geothermal well casings Expired - Fee Related CN201443343U (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (5)

* Cited by examiner, † Cited by third party
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

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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