关键词: 酸压改造, 矿物成分, 易溶蚀物含量, 溶蚀速率, 裂缝导流能力

Abstract: The formation rock mineral composition is one of the factors affecting the effect of acid fracturing. This research
indicates that the content and distribution of easy dissolution in mineral composition of the reservoir rock determines the value
of conductivity in etching fracture，and the more content of easy dissolution there is，the faster the speed of dissolution is.
In this paper，the conductivity of etching fracture have been tested with different dissolution rates of limestone and dolomite.
The effect of conductivity of etching fracture with content of easy dissolution and dissolution rate has been researched. Some
guidance advice to design proposal of acid fracturing treatment is presented. The results show that the fracture conductivity
between the corrosion rate and the acid etching is the parabolic relationship. When easy dissolution accounts for 30% to 40%，
the conductivity of etching fracture stays good.

Key words: acid fracturing, mineral composition, content of easy dissolution, dissolution rate, fracture conductivity