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Blowout prevention packer capable of rapid pump setting and well completion after fracturing

A post-fracturing and packer technology, which is applied in sealing/isolation, wellbore/well components, earthwork drilling and production, etc. It can solve the problems of no blowout prevention measures, increase construction procedures and costs, and shorten production period , to achieve the effect of improving construction efficiency, reducing operation risk, and obvious blowout prevention effect

Active Publication Date: 2020-04-10
DAQING OILFIELD CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] After multi-stage fracturing of oil and water wells, the pressure in the wellbore rises. After the tubing is pulled out, there is no blowout prevention measure in the wellbore, so the pump cannot be put into production directly. Generally, the pump can only be started after the pressure is diffused.
At present, there is no blowout preventive packer for fast pumping and completion after fracturing. It is necessary to invent a packer that can realize wellbore blowout prevention without increasing construction procedures and costs, so as to realize wellbore prevention during rapid pumping after multi-stage fracturing. Spray, shorten the production cycle

Method used

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  • Blowout prevention packer capable of rapid pump setting and well completion after fracturing

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specific Embodiment approach

[0013] Specific embodiments: The present invention will be further described below in conjunction with the accompanying drawings: it consists of an upper joint 1, a fixed pin 2, a centering pressure ring 3, a fixed pin 2 4, a centering body 5, a spring 6, a center pipe 7, and a friction block 8 , clutch cover 9, limit sleeve 10, key 11, fixed sleeve 12, slip center tube 13, upper cone 14, slip 15, spring 2 16, slip hanger 17, lower cone 18, anti-rotation pin 19 , Slip hanging limit sleeve 20, setting sleeve 21, salvage sleeve 22, unsealing pin 23, unsealing sleeve 24, locking ring 25, rubber sleeve stop ring 26, rubber sleeve sleeve 27, limit ring 28, lower joint 29. The throwing glove 30 and the throwing pin 31 are composed; the limit sleeve 10 is connected with the central tube 7 with a screw, the upper end of the friction block 8 is connected with the righting pressure ring 3 with a thread, and the spring one 6 is placed on the centralizing body 5 and the friction block 8 ...

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Abstract

The invention relates to the technical field of oil production engineering in an oil field, and belongs to a blowout prevention packer capable of rapid pump setting and well completion after fracturing. The blowout prevention packer solves the problem that the pressure in a wellbore increases after the multi-stage fracturing of oil and water wells, and a pump cannot be set directly for productiondue to the lack of blowout prevention measures in the wellbore after an oil pipe is pulled out. The blowout prevention packer consists of an upper joint (1), a fixed pin I (2), a centralizing pressurering (3), a fixed pin II (4), a centralizing body (5), a spring I (6), a central pipe (7), a friction block (8), an outer clutch sleeve (9), a limiting sleeve (10), a key (11), a fixed sleeve (12), aslip central pipe (13), an upper cone (14), slips (15), a spring II (16), a slip hanger (17), a lower cone (18), an anti-rotating pin (19), a slip hanger limiting sleeve (20), a setting sleeve (21),a salvage sleeve (22), etc. The blowout prevention packer has the advantages of rapid pump setting and well completion after fracturing, obvious blowout prevention effect and convenience in assembly of the whole set of tools.

Description

technical field [0001] The invention relates to the technical field of oil production engineering in oilfields, and belongs to a blowout preventive packer for fast pumping and well completion after fracturing. Background technique [0002] After multi-stage fracturing of oil and water wells, the pressure in the wellbore rises. After the tubing is pulled out, there is no blowout prevention measure in the wellbore, so the pump cannot be put into production directly. Generally, the pump can only be started after the pressure is diffused. At present, there is no blowout preventive packer for fast pumping and completion after fracturing. It is necessary to invent a packer that can realize wellbore blowout prevention without increasing construction procedures and costs, so as to realize wellbore prevention during rapid pumping after multi-stage fracturing. Spray to shorten the production cycle. Contents of the invention [0003] The purpose of the present invention is to provid...

Claims

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Application Information

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IPC IPC(8): E21B33/128E21B33/129
CPCE21B33/128E21B33/129
Inventor 李琳谢建华张洋王金友唐鹏飞毛庆波张妍张宏岩张春辉
Owner DAQING OILFIELD CO LTD
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