Preparation process of loaded water-controlled sand with phase permeability regulating function

Abstract

The invention discloses a preparation process of loaded water-controlled sand with phase permeability regulating function. The preparation process comprises the following steps of: A) cleaning the surface of quartz sand or ceramsite; B) modifying the surface of the quartz sand or the ceramsite; and C) mixing the surface-modified quartz sand or ceramsite and the mixture of monomer acrylic acid, propylene, sulfonated propylene and deionized water and generating the loaded water-controlled sand with phase permeability regulating function by autopolymerization under the action of an initiator. The process prevents sand; the loaded water-controlled sand with phase permeability regulating function controls water in a limited way, so that the advantages of gravel packing technology are brought into play, the conventional process technology is endowed with unique performance, sand is prevented, the comprehensive water content of an oil well is lowered greatly, the yield of crude oil is increased, the stable production period of the oil well is prolonged, development efficiency or economic benefit is improved, and the like; and the process is widely applied to a sand prevention and water control process used in oil exploitation.

Description

1. Technical field [0001] The invention relates to oil production well phase permeability adjustment and water control and sand control methods, in particular to a load-type water control sand preparation process with phase permeability adjustment function. 2. Background technology [0002] In the process of implementing conventional gravel packing sand control technology in oil fields, quartz sand or fracturing ceramsite is often used as the filling medium. After being filled into the oil layer, the formation compaction zone is established, and the three-stage sand control with the screen sleeve annulus and sand filter pipe However, it also has the following shortcomings or deficiencies: ① no water control function; ② the water cut rises sharply, which seriously affects the production capacity of the oil well; ③ Raising a large amount of formation water leads to a great waste of energy and environmental pollution; ④Short stable production period of oil wells leads to higher...

AI Technical Summary

Problems solved by technology

[0002] In the process of implementing conventional gravel packing sand control technology in oil fields, quartz sand or fracturing ceramsite is often used as the filling medium. After being filled into the oil layer, the formation compaction zone is established, and the three-stage sand control with the screen sleeve annulus and sand filter pipe However, it also has the following shortcomings or deficiencies: ① no water control function; ② the water cut rises sharply, which seriously affects the production capacity of the oil well; ③ Raising a large amount of formation water leads to a great waste of energy and environmental pollution; ④Short stable production period of oil wells leads to higher costs and affects development efficiency or economic benefits

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