CN202990934U - Well mouth telescopic compensator for oil well - Google Patents

Well mouth telescopic compensator for oil well Download PDF

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Publication number
CN202990934U
CN202990934U CN 201220553096 CN201220553096U CN202990934U CN 202990934 U CN202990934 U CN 202990934U CN 201220553096 CN201220553096 CN 201220553096 CN 201220553096 U CN201220553096 U CN 201220553096U CN 202990934 U CN202990934 U CN 202990934U
Authority
CN
China
Prior art keywords
inner tube
tube
well mouth
flange
well
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
CN 201220553096
Other languages
Chinese (zh)
Inventor
李军
纪杰
王琳娜
蒋瑜
李汉萍
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.)
China Petroleum and Chemical Corp
Sinopec Shengli Oilfield Co Binnan Oil Extraction Plant
Original Assignee
China Petroleum and Chemical Corp
Sinopec Shengli Oilfield Co Binnan Oil Extraction Plant
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 China Petroleum and Chemical Corp, Sinopec Shengli Oilfield Co Binnan Oil Extraction Plant filed Critical China Petroleum and Chemical Corp
Priority to CN 201220553096 priority Critical patent/CN202990934U/en
Application granted granted Critical
Publication of CN202990934U publication Critical patent/CN202990934U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a well mouth telescopic compensator for an oil well. The well mouth telescopic compensator comprises an inner tube and an inner tube locating pup joint sleeved on an upper port of the inner tube. A flange is arranged on a lower port of the inner tube. An outer tube is arranged on the outer side of the inner tube. A flange is further arranged on an upper port of the outer tube. A sealing tube is sleeved on the outer side of a lower half section of the inner tube. The upper portion of the sealing tube is sleeved on the outer side of the lower half portion of the outer tube. The flange on the inner tube and the flange on the outer tube are respectively connected with flanges of oil outlet pipelines at a well mouth through flange screw holes formed in the flanges of the inner tube and the outer tube. Sealing rings are arranged between the outer side of the inner tube and the outer tube. Sealing rings are also arranged between the outer side of the inner tube and the sealing tube. Through one-step installation of the well mouth telescopic compensator, continuous deformation of the well mouth can be eliminated. The inner tube which automatically stretches out and draws back along with changes of ground stress is sealed through a sealing piece in the moving process. Through adoption of the flange connection, the well mouth telescopic compensator is convenient to use. The well mouth telescopic compensator stops continuation of deformation of the well mouth through dispersion of stress exerted on the pipelines at the well mouth, reaches qualified centering rate of the well mouth, and improves time efficiency of oil production.

Description

The well mouth of oil well telescopic compensator
Technical field
The utility model relates to expansion loop, and well mouth of oil well telescopic compensator specifically is applicable to that pipeline stretches and the oil well that makes the production wellhead diagonal distortion.
Background technology
Oilfield pumping well accounts for 95%, the conventional pumping unit well head exists the well head deflection comparatively general, give up to standard the impacting of well head centering rate in oil pumper " five rates ", trace it to its cause, under the wellhead back pressure valve, end flanges connects the earthwork of flow process pipeline, presses down or naturally sinks and cause well head to be out of shape through workover derrick.Well head causes polished rod not placed in the middle partially, and packing oil leakage contaminated environment and cost increase, and execute-in-place workman workload strengthens.
In view of this, for the problems referred to above, propose a kind of reasonable in design and effectively improve the well mouth of oil well telescopic compensator of above-mentioned disappearance.
Summary of the invention
The purpose of this utility model is to provide the well mouth of oil well telescopic compensator, and the well head that thoroughly solves the prior art existence causes polished rod not placed in the middle partially, and packing oil leakage contaminated environment and cost increase, the problem that execute-in-place workman workload strengthens.
In order to reach above-mentioned purpose, the utility model provides following technical scheme, the well mouth of oil well telescopic compensator, comprise inner tube and be enclosed within the inner tube orientation spool of inner tube upper port, lower port is provided with flange, and the arranged outside of described inner tube has outer tube, and described outer tube upper port is provided with flange equally, the lower semisection of described inner tube outside cover has sealed tube, and sealing pipe top is enclosed within the Lower Half outside of outer tube.
Flange on described inner and outer tubes is connected with the wellhead flowline flange by the flange screw of offering separately respectively.
Be provided with sealing ring between the described inner tube outside and outer tube, also be provided with sealing ring between the described inner tube outside and sealed tube.
Described inner tube and inner tube orientation spool are threaded connection, and described sealed tube and outer tube also are threaded connection.
Compared to prior art, the beneficial effects of the utility model are:
1, once mounting just can be stopped the continuity of well head distortion; 2, the STRESS VARIATION inner tube of stretching voluntarily everywhere has the seal sealing when mobile.3, flange connects, and is easy to use.The utility model is stressed by decomposing well head pipeline, stops the continuity of well head distortion, reaches the qualified of well head centering rate, improves rate when recovering the oil.
Description of drawings
Fig. 1 is the structural representation of the utility model well mouth of oil well telescopic compensator.
In figure: 1. inner tube orientation spool, 2. inner tube, 3. flange, 4. flange screw, 5. outer tube, 6. sealed tube, 7. sealing ring.
The specific embodiment
Relevant detailed description of the present utility model and technology contents coordinate description of drawings as follows, yet accompanying drawing only provides the use of reference with explanation, and the utility model is limited.
according to shown in Figure 1, this well mouth of oil well telescopic compensator comprises inner tube 2 and is enclosed within the inner tube orientation spool 1 of inner tube 2 upper port, inner tube 2 lower port are provided with flange 3, the arranged outside of described inner tube 2 has outer tube 5, described outer tube 5 upper port are provided with flange 3 equally, outside the lower semisection of described inner tube 2, cover has sealed tube 6, sealing pipe 6 tops are enclosed within the Lower Half outside of outer tube 5, inner tube 2 is connected with the wellhead flowline flange by the flange screw 4 of offering separately respectively with flange 3 on outer tube 5, be provided with sealing ring 7 between inner tube 2 outsides and outer tube 5, also be provided with sealing ring 7 between described inner tube 2 outsides and sealed tube 6, inner tube 2 and inner tube orientation spool 1 are threaded connection, sealed tube 6 and outer tube 5 also are threaded connection.
During work, as the effect of geostatic stress or external force, flow line is moved down, 2 inner chambers at outer tube 5 of inner tube move down, and avoid the tensile stress to well head, thereby eliminate the distortion of well head, and well head centering rate is guaranteed.
The above is only preferred embodiment of the present utility model, and non-in order to limit the scope of the claims of the present utility model, other use the equivalence of patent spirit of the present utility model to change, and all should all belong to the scope of the claims of the present utility model.

Claims (5)

1. well mouth of oil well telescopic compensator, it is characterized in that, comprise inner tube and be enclosed within the inner tube orientation spool of inner tube upper port, lower port is provided with flange, the arranged outside of described inner tube has outer tube, described outer tube upper port is provided with flange equally, and the lower semisection of described inner tube outside cover has sealed tube, and sealing pipe top is enclosed within the Lower Half outside of outer tube.
2. well mouth of oil well telescopic compensator according to claim 1, is characterized in that, the flange on described inner and outer tubes is connected with the wellhead flowline flange by the flange screw of offering separately respectively.
3. well mouth of oil well telescopic compensator according to claim 1, is characterized in that, is provided with sealing ring between the described inner tube outside and outer tube.
4. well mouth of oil well telescopic compensator according to claim 1, is characterized in that, is provided with sealing ring between the described inner tube outside and sealed tube.
5. well mouth of oil well telescopic compensator according to claim 1, is characterized in that, described inner tube and inner tube orientation spool are threaded connection, and described sealed tube and outer tube also are threaded connection.
CN 201220553096 2012-10-26 2012-10-26 Well mouth telescopic compensator for oil well Expired - Fee Related CN202990934U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220553096 CN202990934U (en) 2012-10-26 2012-10-26 Well mouth telescopic compensator for oil well

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220553096 CN202990934U (en) 2012-10-26 2012-10-26 Well mouth telescopic compensator for oil well

Publications (1)

Publication Number Publication Date
CN202990934U true CN202990934U (en) 2013-06-12

Family

ID=48562125

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220553096 Expired - Fee Related CN202990934U (en) 2012-10-26 2012-10-26 Well mouth telescopic compensator for oil well

Country Status (1)

Country Link
CN (1) CN202990934U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104005746A (en) * 2014-05-15 2014-08-27 中国海洋石油总公司 Compensation device for preventing thickened oil thermal recovery well mouth on sea from ascending

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104005746A (en) * 2014-05-15 2014-08-27 中国海洋石油总公司 Compensation device for preventing thickened oil thermal recovery well mouth on sea from ascending

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130612

Termination date: 20131026