Sand control screen pipe flow control system, method and device and petroleum downhole drilling and production tool

Abstract

The invention belongs to the technical field of petroleum and natural gas exploitation, and discloses a sand control screen pipe flow control system, method and device and a petroleum downhole drilling and production tool. Fluid enters a fixed-precision sand blocking layer through a rectangular through hole in a protection module, first-stage sand control treatment is conducted, and the fluid enters an overflowing area control module and then enters a pipeline through a screen; and when the flow of a screen pipe needs to be adjusted, a heating cavity supplies heat through power supply of a power transmission cable, memory metal is heated, a sliding block is stretched and moved through the two-way memory effect of the memory metal, the position of the sliding block in an overflowing area control structure is changed, the overflowing area of the fluid is changed, and screen pipe flow control is achieved. According to the sand control screen pipe flow control system, method and device andthe petroleum downhole drilling and production tool, the flow of the fluid flowing through the screen pipe is adjusted in real time in the petroleum field production process; the method for controlling the oil well yield at the position of the sand control screen pipe is provided through the characteristics of the memory metal; and the flow of the fluid of the sand control screen pipe is adjustedin real time in the petroleum field production process. Compared with a sand control screen pipe in the prior art, the flow of the sand control screen pipe is controlled.

Description

technical field [0001] The invention belongs to the technical field of oil and natural gas exploitation, and in particular relates to a flow control system, method and device of a sand control screen, and an oil downhole drilling and production tool. Background technique [0002] At present, sand production is a common phenomenon in oil and gas well production. Sand production has a huge impact on oil and gas reservoir exploitation. Sand control is the main method to solve the problem of sand production in oil wells at this stage. The current sand control technology is mainly mechanical sand control, chemical sand control and other means to reduce the accumulation of sandstone particles in the oil layer around the wellbore and into the wellbore, but most of these sand control processes are at the cost of sacrificing part of the productivity. Although various sand control techniques can achieve certain effects in the field, excessive sand control causes formation sand to ac...

AI Technical Summary

Problems solved by technology

Although various sand control techniques can achieve certain results when used on site, excessive sand control will cause formation sand particles to accumulate near the wellbore, block pores, affect the formation of earthworm holes, and cause problems such as a decline in oil well productivity.

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