CN203515362U - Coupling for petroleum casing pipe - Google Patents

Coupling for petroleum casing pipe Download PDF

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Publication number
CN203515362U
CN203515362U CN201320291345.8U CN201320291345U CN203515362U CN 203515362 U CN203515362 U CN 203515362U CN 201320291345 U CN201320291345 U CN 201320291345U CN 203515362 U CN203515362 U CN 203515362U
Authority
CN
China
Prior art keywords
flange
casing pipe
pipe
upper flange
lower flange
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
CN201320291345.8U
Other languages
Chinese (zh)
Inventor
黄建华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BLOOMING DRILLING RIG Co Ltd
Original Assignee
BLOOMING DRILLING RIG Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BLOOMING DRILLING RIG Co Ltd filed Critical BLOOMING DRILLING RIG Co Ltd
Priority to CN201320291345.8U priority Critical patent/CN203515362U/en
Application granted granted Critical
Publication of CN203515362U publication Critical patent/CN203515362U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to the technical field of an auxiliary apparatus of a petroleum pipeline and especially relates to a coupling for a petroleum casing pipe. The coupling for the petroleum casing pipe prevents the casing pipe icing, thereby guaranteeing normal use of the casing pipe. The coupling for the petroleum casing pipe comprises a well mouth flange, a reinforcing short nipple, a slip, an internal casing pipe, a venting pipe, an upper flange and a lower flange, wherein the internal casing pipe is connected with the well mouth flange; the well mouth flange is fixedly connected with the upper flange via the reinforcing short nipple; the upper flange is connected with the lower flange; the lower flange is fixed to the internal casing pipe via the slip; the internal casing pipe between the upper flange and the well mouth flange is provided with the venting pipe; an external casing pipe is fixed to the external side of the internal casing pipe; a connecting part between the upper flange and the lower flange is provided with a seal ring; the outer walls of the reinforcing short nipple and the external casing pipe are both provided with an insulation layer made of hard polyurethane; and side walls of the well mouth flange, the upper flange and the lower flange are all provided with an electrical heating pipe.

Description

A kind of box cupling for petroleum casing pipe
Technical field
The utility model relates to petroleum pipeline fixture technical field, particularly relates to a kind of box cupling for petroleum casing pipe.
Background technology
As everyone knows, for the box cupling of petroleum casing pipe, be a kind of of petroleum pipeline fixture, be widely used in field of petroleum exploitation; The existing box cupling for petroleum casing pipe comprises wellhead flange, reinforces pipe nipple, slips, inner sleeve, bleeder pipe, upper flange and lower flange, inner sleeve connects wellhead flange, between wellhead flange and upper flange, by reinforcing pipe nipple, be fixedly connected with, upper flange and lower flange link together, between lower flange and inner sleeve, by slips, fix, inner sleeve between upper flange and wellhead flange is provided with bleeder pipe, the outside fixed jacket pipe of inner sleeve, and upper flange and lower flange junction are provided with sealing ring; This box cupling for petroleum casing pipe is used to be found; due to the winter cold; especially northern the Northeast often there will be icing or contiguous icing state (it is generally subzero 60 degrees Celsius to 30 degrees Celsius above freezing that oil freezes), thereby causes whole box cupling to use.
Utility model content
For solving the problems of the technologies described above, the utility model provides a kind of preventing to freeze, thereby ensures the normal box cupling for petroleum casing pipe using.
Box cupling for petroleum casing pipe of the present utility model, comprise wellhead flange, reinforce pipe nipple, slips, inner sleeve, bleeder pipe, upper flange and lower flange, inner sleeve connects wellhead flange, between wellhead flange and upper flange, by reinforcing pipe nipple, be fixedly connected with, upper flange and lower flange link together, between lower flange and inner sleeve, by slips, fix, inner sleeve between upper flange and wellhead flange is provided with bleeder pipe, the outside fixed jacket pipe of inner sleeve, upper flange and lower flange junction are provided with sealing ring; On the outer wall of described reinforcing pipe nipple and outer tube, be provided with hard polyaminoester insulation layer, on described wellhead flange, upper flange and lower flange sidewall, be provided with electric heating tube.
Box cupling for petroleum casing pipe of the present utility model, is provided with polyureas topping on the outer wall of described hard polyaminoester insulation layer.
Box cupling for petroleum casing pipe of the present utility model, also comprises controller and gauge tap, and described gauge tap is electrically connected to electric heating tube, and described controller is electrically connected to gauge tap.
Box cupling for petroleum casing pipe of the present utility model, described controller is electrically connected to by wireless signal with described gauge tap.
Compared with prior art the beneficial effects of the utility model are: on the outer wall of reinforcing pipe nipple and outer tube, be provided with hard polyaminoester insulation layer, on wellhead flange, upper flange and lower flange sidewall, be provided with electric heating tube; Like this, thereby can prevent that single unit system from freezing by electric heater for heating, and can reach better heat insulation effect by hard polyaminoester insulation layer, thereby reduce the electrical heating time, save the energy, finally effectively ensure that single unit system normally uses.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present utility model is described in further detail.Following examples are used for illustrating the utility model, but are not used for limiting scope of the present utility model.
As shown in Figure 1, box cupling for petroleum casing pipe of the present utility model, comprise wellhead flange 1, reinforce pipe nipple 2, slips 3, inner sleeve 4, bleeder pipe 5, upper flange 6 and lower flange 7, inner sleeve connects wellhead flange, between wellhead flange and upper flange, by reinforcing pipe nipple, be fixedly connected with, upper flange and lower flange link together, between lower flange and inner sleeve, by slips, fix, inner sleeve between upper flange and wellhead flange is provided with bleeder pipe, the outside fixed jacket pipe 8 of inner sleeve, upper flange and lower flange junction are provided with sealing ring 9; On the outer wall of reinforcing pipe nipple and outer tube, be provided with hard polyaminoester insulation layer 10, on wellhead flange, upper flange and lower flange sidewall, be provided with electric heating tube 11; Like this, thereby can prevent that single unit system from freezing by electric heater for heating, and can reach better heat insulation effect by hard polyaminoester insulation layer, thereby reduce the electrical heating time, save the energy, finally effectively ensure that single unit system normally uses.
Box cupling for petroleum casing pipe of the present utility model, is provided with polyureas topping 12 on the outer wall of hard polyaminoester insulation layer.
Box cupling for petroleum casing pipe of the present utility model, also comprises controller and gauge tap, and gauge tap is electrically connected to electric heating tube, and controller is electrically connected to gauge tap.
Box cupling for petroleum casing pipe of the present utility model, controller is electrically connected to by wireless signal with gauge tap.
The above is only preferred embodiment of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.

Claims (4)

1. the box cupling for petroleum casing pipe, comprise wellhead flange, reinforce pipe nipple, slips, inner sleeve, bleeder pipe, upper flange and lower flange, inner sleeve connects wellhead flange, between wellhead flange and upper flange, by reinforcing pipe nipple, be fixedly connected with, upper flange and lower flange link together, and between lower flange and inner sleeve, by slips, fix, and the inner sleeve between upper flange and wellhead flange is provided with bleeder pipe, the outside fixed jacket pipe of inner sleeve, upper flange and lower flange junction are provided with sealing ring; It is characterized in that, on the outer wall of described reinforcing pipe nipple and outer tube, be provided with hard polyaminoester insulation layer, on described wellhead flange, upper flange and lower flange sidewall, be provided with electric heating tube.
2. the box cupling for petroleum casing pipe as claimed in claim 1, is characterized in that, is provided with polyureas topping on the outer wall of described hard polyaminoester insulation layer.
3. the box cupling for petroleum casing pipe as claimed in claim 1, is characterized in that, also comprises controller and gauge tap, and described gauge tap is electrically connected to electric heating tube, and described controller is electrically connected to gauge tap.
4. the box cupling for petroleum casing pipe as claimed in claim 3, is characterized in that, described controller is electrically connected to by wireless signal with described gauge tap.
CN201320291345.8U 2013-05-27 2013-05-27 Coupling for petroleum casing pipe Expired - Fee Related CN203515362U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320291345.8U CN203515362U (en) 2013-05-27 2013-05-27 Coupling for petroleum casing pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320291345.8U CN203515362U (en) 2013-05-27 2013-05-27 Coupling for petroleum casing pipe

Publications (1)

Publication Number Publication Date
CN203515362U true CN203515362U (en) 2014-04-02

Family

ID=50374309

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320291345.8U Expired - Fee Related CN203515362U (en) 2013-05-27 2013-05-27 Coupling for petroleum casing pipe

Country Status (1)

Country Link
CN (1) CN203515362U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105840112A (en) * 2016-03-24 2016-08-10 中国石油天然气股份有限公司 Surface casing well cementing assembly
CN106639902A (en) * 2016-11-28 2017-05-10 无锡金顶石油管材配件制造有限公司 Petroleum sleeve coupling with heat retaining property

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105840112A (en) * 2016-03-24 2016-08-10 中国石油天然气股份有限公司 Surface casing well cementing assembly
CN106639902A (en) * 2016-11-28 2017-05-10 无锡金顶石油管材配件制造有限公司 Petroleum sleeve coupling with heat retaining property

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Coupling for petroleum casing pipe

Effective date of registration: 20140916

Granted publication date: 20140402

Pledgee: Beijing technology intellectual property financing Company limited by guarantee

Pledgor: Blooming Drilling Rig Co., Ltd.

Registration number: 2014990000757

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20160902

Granted publication date: 20140402

Pledgee: Beijing technology intellectual property financing Company limited by guarantee

Pledgor: Blooming Drilling Rig Co., Ltd.

Registration number: 2014990000757

PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Coupling for petroleum casing pipe

Effective date of registration: 20160902

Granted publication date: 20140402

Pledgee: Beijing technology intellectual property financing Company limited by guarantee

Pledgor: Blooming Drilling Rig Co., Ltd.

Registration number: 2016990000764

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20180625

Granted publication date: 20140402

Pledgee: Beijing technology intellectual property financing Company limited by guarantee

Pledgor: Blooming Drilling Rig Co., Ltd.

Registration number: 2016990000764

PC01 Cancellation of the registration of the contract for pledge of patent right
DD01 Delivery of document by public notice

Addressee: Zhonghong Xing Petroleum Equipment (Beijing) Co., Ltd.

Document name: Notification of Termination of Patent Right

DD01 Delivery of document by public notice
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140402

Termination date: 20190527

CF01 Termination of patent right due to non-payment of annual fee