Propping agent for resin coating film and preparation method thereof

Abstract

The invention discloses a propping agent for a resin coating film and a preparation method thereof. The propping agent comprises an aggregate, a resin, a curing agent and a dispersing agent, wherein the dosage of the resin is 1%-10% of the weight of the aggregate; the dosage of the curing agent is 0.5%-5% of the weight of the aggregate; and the dosage of the dispersing agent is 0.2%-2% of the weight of the aggregate. The propping agent for the resin coating film provided by the invention has the functions of allowing oil gas to smoothly penetrate and preventing water from penetrating through the propping agent, so that the separating effect of oil gas and water is enhanced by the functions and the oil extraction cost is lowered; due to the excellent hydrophobic property of the resin film, the propping agent has excellent water resistance, the anti-breaking capability of the propping agent is increased and the long-term flow-guiding effect is good; a triple film coating technology is adopted by the invention and the calcium stearate is taken as a dispersing agent, so that the quality is greatly increased, the yield is increased to above 80%, the cost is greatly lowered and the production efficiency is increased; and the preparation method provided by the invention is simple, the product yield is high and the breakage rate of the product is obviously reduced.

Description

technical field

[0001] The invention belongs to the technical field of oil and gas field exploitation, and in particular relates to a resin-coated proppant and a preparation method thereof. Background technique

[0002] Petroleum fracturing proppant (ceramsite sand) is a kind of ceramic particle product with high fracturing strength. It is mainly used for downhole support in oil fields to increase the production of oil and natural gas. It is an environmentally friendly product. This product is a substitute for medium and low-strength proppants such as natural quartz sand, glass balls, and metal balls, and has a good effect on increasing oil and gas production.

[0003] During oil and gas deep well mining, high closure pressure and low permeability deposits are treated by fracturing to crack the oil-gas-bearing rock formations, and oil and gas gather from the channels formed by the fractures. Petroleum fracturing proppant is used along with the high-pressure solution to ente...