Cementation propping agent

Abstract

The invention discloses a cementation propping agent, and provides the cementation propping agent which is characterized in that the cementation propping agent is cemented and solidified under low temperature water-bath environment, the high temperature resistance cementation propping agent through cementation and solidification is used for heavy oil thermal recovery and coal bed gas exploitation. The cementation propping agent is compounded by aluminate chamotte sand with particle size of 0.35-1.6mm and high alumina sand, and comprises 50-80% of aluminate chamotte sand and 20-50% of high aluminium sand through weight percentage. The cementation propping agent is prepared by inorganic at-resisting materials through complex formulation, the aluminate chamotte sand is a cementation material, and can resist high temperature of 1600 DEG C after cementation and solidification. The high aluminium sand is a cementation aggregate and can resist high temperature of 2000 DEG C. The above materials are uniformly mixed according to reasonable ratio, and are subjected to hydration and hardening reactions under water-bath environment at more than 5 DEG C, hydration and hardening speed accelerates by following the increased temperature, after cementation and hardening for 72 hours, a continuous cementation solidified body is formed, so that sand prevention, water plugging and pressing crack measure requirements of heavy oil thermal recovery well and coal bed gas well can be satisfied.

Description

technical field [0001] The invention relates to the field of oil and coal bed gas development, more specifically, relates to a cementing proppant used in sand control, water shutoff and fracturing measures of heavy oil thermal recovery wells and coal bed gas wells. Background technique [0002] In the field of petroleum development, the development of shallow heavy oil requires the injection of high-temperature steam into oil-bearing reservoirs. Therefore, the process of thermal recovery of heavy oil makes the underground temperature reach 350°C or even higher. Due to the shallow burial depth of heavy oil reservoirs, the reservoirs are loose sandstones. During the crude oil production process, formation sands are produced at the same time, which will cause more and more underground physical deficits over time, thereby destroying the reservoir structure and causing production failure. Well shut down. The way to solve this kind of problem is to inject into the ground a cement...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems in the prior art that the organic materials are expensive, the bonding and curing speed is slow at low temperature, the high temperature resistance is poor, and the high temperature environment above 350°C cannot be satisfied, and to provide a bonding and curing in a low temperature water bath environment. High temperature resistant cemented proppant for heavy oil thermal recovery and coalbed methane development after solidification