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Automatic deflection adjusting sealing device for thick oil thermal production well mouth polish rod

A technology of thermal recovery and sealing device for heavy oil, which is applied in the directions of sealing/package, earthwork drilling, wellbore/well parts, etc. It can solve the problems of polished rod sealing and other problems, achieve good sealing effect, save packing, and reduce pumping stop the effect of time

Inactive Publication Date: 2006-02-22
中国石化胜利油田有限公司胜利采油厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Better solution to the sealing problem of the wellhead polished rod in heavy oil thermal recovery

Method used

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  • Automatic deflection adjusting sealing device for thick oil thermal production well mouth polish rod
  • Automatic deflection adjusting sealing device for thick oil thermal production well mouth polish rod
  • Automatic deflection adjusting sealing device for thick oil thermal production well mouth polish rod

Examples

Experimental program
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Embodiment Construction

[0017] An embodiment is illustrated in conjunction with the accompanying drawings:

[0018] attached figure 1 Among them, 1 is the oil pipe, 2 is the polished oil rod, 3 is the packing debris filter cover, 4 is the ball head seat, 5 and 13 are anti-theft removal screws, 6, 8, 9, 10 and 14 are "0" type seals Circle, 7 is the ball head cover, 11 is the centering sleeve of the polished rod, 12 is the ball head, 15 is the lower end cap of the packing box body, 16 is the conical spiral packing, 17 is the packing body, 18 is the cylindrical spiral packing, 19 is a polished rod protective cover, 20 is a packing pressure pad, and 21 is a packing pressure cap. C is a packing debris storage chamber, D is an oil drain hole, and E is an axial semi-cylindrical groove evenly distributed on the inner wall of the polished rod centralizing sleeve 11 .

[0019] Depend on figure 1 As shown, the device includes an automatic deflection adjustment part, a polished rod straightening protection pa...

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PUM

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Abstract

This invention discloses a polish rod automatic regulation sealing device of heavy crude thermal production well, which belongs to pump well port sealing technique field. The device comprises six parts, from top to end: polish rod protective part, disc root sealing part, polish rod erection part, automatic regulation part, anti-theft part and disc root chip filtering part; wherein the automatic regulation part comprises bulb, bulb seat and bulb cap, set outside the polish rod regulation cover and the disc root chip filtering shield; the disc root sealing part comprises helical disk root which adhere to the pump polish rod, a disc root box outside the disc root and the disc root cap and mat in the top; every part are connected with each other through flight. Said invention can regulate the pump polish rod, preventing the disc root deflection; the axial pressure can be adjusted at any time with good sealing effect; besides, it can add new disc root continuously. The invention is fit for heavy crude thermal production and kinds of pump well.

Description

(1) Technical field [0001] The invention relates to the technical field of oil pumping wellhead sealing, especially the occasion where it is extremely difficult to seal the wellhead of heavy oil thermal recovery. Specifically, it is a sealing device for automatic deflection adjustment of a polished rod at the wellhead of heavy oil thermal recovery. (2) Background technology [0002] There are some heavy oil wells in each oil field. Since the crude oil in the downhole oil layer is very thick, has high viscosity and poor fluidity, it cannot be directly pumped from the downhole to the surface wellhead by the oil pump, so the downhole heavy oil must be pumped while heating. It is called "heavy oil thermal recovery". Commonly used heating methods are hot water injection, steam injection, electric heating, etc. Due to the high temperature of the heated and diluted crude oil, the wellhead outlet temperature is generally 50-70°C, and the temperature of the electrically heated pump...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/03
Inventor 陈景世付路长苏庆欣周宏斌张志华郭立谦薛涛袁杰
Owner 中国石化胜利油田有限公司胜利采油厂
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