Composition for penetration-driving oil recovery agent and penetration-driving oil recovery agent
A technology of composition and auxiliary agent, which is applied in the field of seepage-displacement oil recovery agent composition and seepage-displacement oil recovery agent, and can solve the problems of low oil recovery and low oil recovery in low-permeability oil reservoirs, etc.
Active Publication Date: 2012-09-19
PETROCHINA CO LTD
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Abstract
The invention provides a composition for a penetration-driving oil recovery agent. The composition comprises the following components in percentage by weight: 0.5-45 percent of a main agent, 0.5-50 percent of an auxiliary agent and 5-99 percent of an inorganic alkali metal salt, wherein the main agent is polyacrylate, and comprises one or a combination of potassium polyacrylate, polyacrylate sodium, sodium polymethacrylate and ammonium polyacrylate; and the auxiliary agent is one or a combination of polyaspartic acid, polyaspartate and polyoxyethylene sorbitol anhydride mono-fatty acid ester. The invention further provides a penetration-driving oil recovery agent containing the composition for the penetration-driving oil recovery agent and a preparation method thereof and an application thereof in an oil recovery process. The penetration-driving oil recovery agent provided by the invention is prepared from simple and readily-available raw materials, has low using amount, and particularly has high recovery rate under a low penetration condition.
Application Domain
Fluid removalDrilling composition
Technology Topic
Sodium polyacrylateFatty acid ester +7
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PUM
Property | Measurement | Unit |
Viscosity | 10.0 | mPa·s |
Viscosity | 9.9 | mPa·s |
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