Sand control sieve pipe and manufacturing method of sand control sieve pipe

Abstract

The invention provides a sand control sieve pipe and a manufacturing method of the sand control sieve pipe, relates to the field of petroleum equipment and mainly aims at reducing the pipe diameter of the sand control sieve pipe. The sand control sieve pipe comprises a base pipe and a filtering component, wherein a through hole is formed in the pipe wall of the base pipe, the filtering component comprises a layer of filtering screen, the filtering screen is provided with an open hole with the first dimension hole diameter, the first side edge of the filtering screen and the second side edge of the filtering screen are welded through a welding process for forming a first sleeve structure, and the first sleeve structure is arranged on the outer side of the base pipe in a sleeving way for forming a first filtering layer of the base pipe. The hole diameter dimension of an open hole formed by welding the open hole formed in the first side edge part of the filtering screen with the open hole formed in the second side edge part of the filtering screen is smaller than or equal to the first dimension. Compared with a structural mode of winding 2 to 5 coils of metal screens on the periphery of the base pipe in the prior art, the sand control sieve pipe and the manufacturing method have the advantages that the pipe diameter of the sand control sieve pipe can be reduced, the sand control sieve pipe after the pipe diameter reduction can be put into an oil gas well hole. In addition, the seepage rate and the anti-blocking capability of the sand control sieve pipe can also be improved.

Description

technical field [0001] The invention relates to the field of petroleum equipment, in particular to a sand control screen with a smaller diameter and a method for manufacturing the sand control screen. Background technique [0002] Sand production in the oil layer is caused by the destruction of the rock structure near the bottom of the well, and it is related to factors such as the cementation strength of the rock, stress state, mining conditions, and water content in the oil well. In the field of petroleum exploitation, especially for the exploitation of unconsolidated oil and gas reservoirs, sand production is usually accompanied. Sand production in oil and gas wells will lead to formation deficits, formation collapse, and damage to casings; resulting in reduced production and shutdown of oil wells; accelerated wear and tear of downhole pipe strings, tools and ground equipment; increased difficulty in crude oil processing; increased environmental pollution and transportati...

AI Technical Summary

Problems solved by technology

[0008] Among them, on the metal mesh screen tube, the 2 to 5 layers of metal mesh wrapped by the base pipe are surrounded by a metal mesh wound on the base pipe for 2 to 5 rolls, increasing the diameter of the metal mesh screen tube, in order to wrap the metal mesh When the screen is run into the wellbore of an oil well, it is necessary to create a wider wellbore to run a larger diameter metal mesh screen into the wellbore, which increases the cost of oil extraction

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