Epoxy resin coating proppant and its preparation method and construction technology

Abstract

The invention belongs to the field of sand control in oil, gas and water well mining, and in particular relates to an epoxy resin coating proppant and its preparation method and construction process. The epoxy resin coating proppant includes type A coated particles and type B coated particles; type A The mass ratio of coated particles and Type B coated particles is 1:1; the Type A coated particles include Type A sand core, Type A sand core coating and Type A outer cladding; the Type A sand core coating includes Modified epoxy resin, amine curing agent, silicone coupling agent and ether diluent; the B-type coating particles include B-type sand core, B-type sand core coating and B-type outer cladding; Type B sand core coating includes silicone epoxy resin, glass fiber, benzene thinner, and amine curing agent.

Description

technical field [0001] The invention belongs to the field of sand control in oil, gas and water well mining, and in particular relates to an epoxy resin coating proppant, a preparation method and a construction process thereof. Background technique [0002] At present, the sand control technology for conventional wells is relatively mature. The deep gravel packing sand control technology establishes a large-scale continuous sand control with tight compaction in the near-wellbore zone, perforation holes, and screen casing annulus through large-scale sand addition and variable displacement construction. Barrier to meet the sand control needs of conventional wells. However, with the deepening of oilfield development, the number of sand-producing wells in complex well conditions (wells with severe casing change (well diameter <100mm), poor cementing quality, and sidetracked wells) has increased year by year, and the current sand control technology cannot fully meet these requ...

AI Technical Summary

Problems solved by technology

However, with the deepening of oilfield development, the number of sand-producing wells in complex well conditions (wells with severe casing change (well diameter <100mm), poor cementing quality, and sidetracked wells) has increased year by year, and the current sand control technology cannot fully meet these requirements. The need for sand control in sand producing wells under complex well conditions

[0003] In Dagang Oilfield alone, there are 30-50 sand producing wells with complex well conditions every year. If conventional sand control measures are adopted for such sand producing wells, they need to be constructed under high pressure conditions, which has a high risk. Usually, such wells are generally given up. Sand control measures, but can only take repeated pump inspection sand flushing

[0004] For the problem of sand production in complex well conditions, chemical sand control technology is the solution with the lowest risk, but the existing chemical sand control technology can no longer fully meet the needs of production

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