Filter screen material for sand control pipe in oil exploitation

Abstract

The invention provides a filter screen material for a sand control pipe in oil exploitation. The filter screen material has a three-dimensional net structure, is a porous material of which the framework consists of metal nickel or nickel-containing alloying metal, and has a continuous microcellular structure which is formed by connecting polyhedral cells, wherein the pore density is 30 to 95PPI, and the volume density of the metal is 1 to 3g / cm<3>. The porous metal material is provide with a large number of pores, and has a large specific surface area and a larger filtering area and flow area, so the sand control filtering effect is better, the sand-containing capacity is high, and the service life can be greatly prolonged by 2 to 3 years. Meanwhile, the material has certain toughness and high anti-deformation capacity and is reproducible and a method for recovering the material is simple.

Description

technical field [0001] The invention relates to materials in sand control pipes for petroleum exploitation, in particular to filter screen materials used in sand control pipes. Background technique [0002] At present, the common mechanical sand control methods at home and abroad include sand control pipe sand control and gravel packing sand control. Due to the characteristics of simple construction process, no gravel filling operation, no need for large-scale sand control equipment and high construction success rate, the sand control of sand filter pipe has developed rapidly in the past ten years, and new products and technologies have emerged continuously to adapt to different geological conditions and different oil wells. Type of sand control needed. At present, the filter materials in the sand control pipe are generally used, such as metal mesh cloth, metal cotton yarn, etc., because the filter materials currently used are planar structures, the pores are in a two...

AI Technical Summary

Problems solved by technology

At present, the filter materials in the sand control pipe are generally used, such as metal mesh cloth, metal cotton yarn, etc., because the filter materials currently used are planar structures, the pores are in a two-dimensional state, and the specific surface area is small, so its capacity The sand capacity is limited, and when there is no sand holding capacity, new filter materials must be replaced, and the service life is short; and because it is used underground, it is frequently replaced and cannot be regenerated, which not only results in high material costs, but also delays mining time and other cost increases