Horizontal well packer staged fracturing technology tube pillar

Abstract

A horizontal well packer staged fracturing technology tube pillar comprises an oil string, a hydraulic anchor, a seat sealing controller, a straddle packer A, a straddle packer B, a straddle packer C, a sliding bush sand spraying device, a sand spraying device, a guider, and a capillary tube line; wherein the oil string is installed and connected with the hydraulic anchor, a seat sealing controller, the straddle packer A, the sliding bush sand spraying device, the straddle packer B, the sand spraying device, the straddle packer C and the guider; the capillary tube line is connected with the seat sealing controller, the straddle packer A, the straddle packer B, the straddle packer C at one side of the oil string. In the situation of the immovability of the tube pillar, the tube pillar is characterized by realizing the pressing parting technology of the two to three layer by bowling, high construction safe reliability, strong operability, simple working procedure, simple implementation and the like and is widely applied in the petroleum oil production technology.

Description

1. Technical field [0001] The invention relates to an oil production well fracturing reconstruction process string, in particular to a segmental fracturing process string for a horizontal well packer. 2. Background technology [0002] The staged fracturing treatment of horizontal wells in oil exploitation is generally mechanical staged fracturing. This fracturing method has contributed to improving the permeability of oil layers and increasing the production of production wells and the injection rate of injection wells. There are the following shortcomings or deficiencies: (1) The fracturing packer is forced to construct in sections. After the fracturing of a section is completed, the pipe string is lifted up to carry out the fracturing construction of the next section. It is difficult to unseal the packer after fracturing; (2) The fracturing failure is caused by the damage and poor sealing of the packer in the lifting string; (3) The formation pressure is high after the fra...

AI Technical Summary

Problems solved by technology

[0002] The staged fracturing treatment of horizontal wells in oil exploitation is generally mechanical staged fracturing. This fracturing method has contributed to improving the permeability of oil layers and increasing the production of production wells and the injection rate of injection wells. There are the following shortcomings or deficiencies: (1) The fracturing packer is forced to construct in sections. After the fracturing of a section is completed, the pipe string is lifted up to carry out the fracturing construction of the next section. It is difficult to unseal the packer after fracturing; (2) The fracturing failure is caused by the damage and poor sealing of the packer in the lifting string; (3) The formation pressure is high after the fracturing, and the lifting string It is easy to cause blowout and cause accidents; (4) This method has poor operability and tedious process, and the wellhead and fracturing pipeline need to be disassembled every time the string is lifted, the procedure is complicated, the labor intensity of the operators is high, and the safety is poor

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