CN201111544Y - Oil-submersible electric pump - Google Patents

Oil-submersible electric pump Download PDF

Info

Publication number
CN201111544Y
CN201111544Y CNU2007200970643U CN200720097064U CN201111544Y CN 201111544 Y CN201111544 Y CN 201111544Y CN U2007200970643 U CNU2007200970643 U CN U2007200970643U CN 200720097064 U CN200720097064 U CN 200720097064U CN 201111544 Y CN201111544 Y CN 201111544Y
Authority
CN
China
Prior art keywords
cable
head main
oil pipe
sealing
electric pump
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 - Lifetime
Application number
CNU2007200970643U
Other languages
Chinese (zh)
Inventor
薛士和
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.)
Tianjin Anrui Industry & Trade Co Ltd
Original Assignee
Tianjin Anrui Industry & Trade 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 Tianjin Anrui Industry & Trade Co Ltd filed Critical Tianjin Anrui Industry & Trade Co Ltd
Priority to CNU2007200970643U priority Critical patent/CN201111544Y/en
Application granted granted Critical
Publication of CN201111544Y publication Critical patent/CN201111544Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model provides an electric submersible pump wellhead, comprising an oil pipe head main body and an oil pipe hanger which is arranged inside an eccentric hole of the oil pipe head main body. The electric submersible pump wellhead is characterized in that a cable lead-out pipe is casted on the oil pipe head main body; the upper end of the cable lead-out pipe is provided with a cable sealing box component; the oil pipe head main body, a flange large head and a flange small head are sealed by a metal cushion ring. The electric submersible pump wellhead has the advantages and effective effects as follows: 1. the service life of the product is prolonged, the pressure bearing capability of the product is improved, and the usage safety is improved; 2. as the oil pipe head main body and the cable lead-out pipe are integrally casted and the upper end of the cable lead-out pipe is provided with the cable sealing box, the cable is not required to be cut off, thus ensuring the insulation performance.

Description

The submersible electric pump well head
Technical field:
The utility model belongs to a kind of corollary equipment in a kind of oil exploitation process, particularly a kind of submersible electric pump well head.
Background technology:
In the oil exploitation process, submersible electric pump is lowered to electric pump output liquid behind the oil well tube, all will be by a kind of special device control and sealing between tubing and casing pressure and the oil sets annular space.This device of two classes is arranged in the market: 1, on boll-weevil hanger and flange concentric reducer, leave the lead perforation, will be divided into three strands from the cable that well head cuts off and pass tubing hanger,, form the sealing together between the tubing and casing with the perforation of airtight and watertight padding hermetically-sealed cable.After cable being passed the cable perforation of flange concentric reducer, with the flange concentric reducer after the tubing head top tightens, and with the cable perforation with the airtight and watertight padding sealing, again the cable that cuts off is connect.The pressure differential that the sealing of first road of this structure is born alters a great deal, and the oil well pressure that has is very high, in case and installation, the sealing in first road can't be checked.Once pinpoint the problems, be difficult to repair.In addition, the cable insulation difficulty that has connect.2, after opening side channel on the boll-weevil hanger cable is embedded, the boll-weevil hanger seat is gone in the tubing head, again with special-purpose encapsulant sealing.The pressure ring and the flange of opening compress encapsulant through bolt, form the sealing that the slit of sleeve pipe and atmosphere cable is outwards revealed, and therefore sealing herein is nonmetals, use aging easily and distortion for a long time.It is low that this type of well head bears pressure, and the oil well that casing pressure is high uses very dangerous.
Summary of the invention:
The purpose of this utility model just is to overcome above-mentioned the deficiencies in the prior art, and a kind of safe in utilization, easy to maintenance and submersible electric pump well head that sealing performance is high is provided.
The technical solution of the utility model is: a kind of submersible electric pump well head, comprise the tubing head main body and be installed in the interior boll-weevil hanger of tubing head main body eccentric orfice, it is characterized in that: be cast with the cable fairlead on the tubing head main body, the cable seal case assembly is installed in the upper end of cable fairlead; Adopt the sealing of metal gasket ring between tubing head main body and the flange concentric reducer.
Above-mentioned boll-weevil hanger has sealing surface, and and eccentric orfice between adopt rubber sealing.
Above-mentioned cable seal case assembly is made up of the sealant that is used for hermetically-sealed cable in box body, the box body, the backing plate of sealant bottom, pressing plate and the flange that they are compressed, the bolt at sealant top.
The utlity model has following advantage and good effect:
1 owing to adopt the sealing of metal gasket ring between tubing head main body and the flange concentric reducer, therefore improved the application life of product and the ability of bearing pressure, improved the safety of using.
2, because with tubing head main body and the moulding of cable fairlead integrally casting, and cable sealing box is installed, make cable need not to cut off, so insulating properties is guaranteed in the upper end of cable fairlead.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
The specific embodiment:
As shown in the figure: a kind of submersible electric pump well head comprises tubing head main body 1 and is installed in the interior boll-weevil hanger 2 of tubing head main body eccentric orfice.Tubing head main body 1 upper body is cast with cable fairlead 7, and the cable seal case assembly is installed in the upper end of cable fairlead, and cable is drawn the back in the fairlead and sealed with encapsulant.Adopt metal gasket ring sealing 5 between tubing head main body 1 and the flange concentric reducer 6, and both are installed together by bolt 8.Boll-weevil hanger is installed in the tubing head main body eccentric orfice by lock ring 4, and it has sealing surface 9, and and eccentric orfice between adopt rubber sealing 3.Above-mentioned cable seal case assembly is made up of the sealant 11 that is used for hermetically-sealed cable in box body 10, the box body, the backing plate 12 of sealant bottom, pressing plate 13 and the flange 14 that they are compressed, the bolt 15 at sealant top.

Claims (3)

1, a kind of submersible electric pump well head comprises the tubing head main body and is installed in the interior boll-weevil hanger of tubing head main body eccentric orfice that it is characterized in that: be cast with the cable fairlead on the tubing head main body, the cable seal case assembly is installed in the upper end of cable fairlead; Adopt the sealing of metal gasket ring between tubing head main body and the flange concentric reducer.
2, submersible electric pump well head according to claim 1, it is characterized in that: above-mentioned boll-weevil hanger has sealing surface, and and eccentric orfice between adopt rubber sealing.
3, submersible electric pump well head according to claim 1 is characterized in that: above-mentioned cable seal case assembly is made up of the sealant that is used for hermetically-sealed cable in box body, the box body, the backing plate of sealant bottom, pressing plate and the flange that they are compressed, the bolt at sealant top.
CNU2007200970643U 2007-08-13 2007-08-13 Oil-submersible electric pump Expired - Lifetime CN201111544Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007200970643U CN201111544Y (en) 2007-08-13 2007-08-13 Oil-submersible electric pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007200970643U CN201111544Y (en) 2007-08-13 2007-08-13 Oil-submersible electric pump

Publications (1)

Publication Number Publication Date
CN201111544Y true CN201111544Y (en) 2008-09-10

Family

ID=39963287

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2007200970643U Expired - Lifetime CN201111544Y (en) 2007-08-13 2007-08-13 Oil-submersible electric pump

Country Status (1)

Country Link
CN (1) CN201111544Y (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111305785A (en) * 2018-12-12 2020-06-19 中国石油天然气股份有限公司 Wellhead sealing device, installation method and system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111305785A (en) * 2018-12-12 2020-06-19 中国石油天然气股份有限公司 Wellhead sealing device, installation method and system

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20080910