| abstract |
The invention discloses a polyhydrogen cross-linked acid solution and a preparation method thereof, which are used to realize the reconstruction of deep cracks, and are especially suitable for the reconstruction of cracks in a high temperature environment. chemical agent, the content is 0.5%-3.0%; cross-linking agent, the content is 0.2%-5.0%; polyhydrogen agent, the content is 1.0%-15%; corrosion inhibitor, the content is 1.0%-10.0%; iron ion stable The content of the demulsification aid is 1.0%-3.0%; the content of the demulsification aid is 0.5%-3.0%. The contents of all components in the present invention are mass percentages. The polyhydrogen cross-linked acid solution of the present invention reforms cracks through acid etching mainly with hydrochloric acid and supplemented by a polyhydrogen agent. The viscosity of the solution is increased by the thickener and the filtration loss of the acid solution is reduced, so that the solution maintains a low acid-rock reaction rate even at a high temperature of 160 °C, thereby slowing down the dissolution rate of the dissolution reaction. |