Preparation method for suspension polymer

Abstract

The invention relates to a preparation method for a suspension polymer. The preparation method comprises: adding an additive to polymer dry powder to form a uniform and stable suspension polymer, wherein the suspension polymer is applicable for oilfield water shutoff profile modification construction. The preparation steps comprise: adding a wetting agent to polymer dry powder with a particle size of 80-150 meshes; uniformly stirring at a stirring speed of 50-70 rotations per minute, and sequentially adding a dispersing agent, white oil, and a stabilizer while continuously stirring; and continuously stirring for 0.5-1.5 hours at the same stirring speed to obtain the suspension polymer. The preparation method of the present invention has the following characteristics that: the polymer dry powder is liquefied; the online profile modification is achieved; the operation is simple; the preparation is convenient; the labor intensity is low; the well site pollution is low; energy saving and consumption reducing are achieved; the construction cost is low; the metering is precise; the error of the preparation concentration is low; adverse factors on on-site operator health are reduced; the fish-eye is not easily generated; the polymer waste is reduced; aeration oxygen degradation of the polymer is eliminated; the solution quality and the profile modification implementation effects are ensured; and the like. In addition, the preparation method of the present invention is widely applicable for oilfield water shutoff profile modification processes.

Description

technical field [0001] The invention relates to a preparation method of polymer dry powder or cross-linked polymer gel and pre-cross-linked polymer gel used in oil field development, in particular to a preparation method of a suspension polymer. Background technique [0002] At present, polymer dry powder is the most used profile control agent in oilfield water plugging and profile control. As a profile control agent, polymer dry powder has played an important role, but it also has the following shortcomings or deficiencies: ① The dissolution of polymer dry powder requires a diffuser, a dissolving tank, and an agitator. Injection through split pumps, heavy equipment, complex process, many equipments, and large floor area; ②Extensive measurement and high labor intensity of operators; ③Great environmental pollution at the construction site, and great effect of equipment on polymer shear degradation; ④High operating costs , high energy consumption; The prepared polymer solut...

AI Technical Summary

Problems solved by technology

As a profile control agent, polymer dry powder has played an important role, but it also has the following shortcomings or deficiencies: ① The dissolution of polymer dry powder requires a diffuser, a dissolving tank, and an agitator. Injection through split pumps, heavy equipment, complex process, many equipments, and large floor area; ②Extensive measurement and high labor intensity of operators; ③Great environmental ...