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

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...

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

Images