西南石油大学学报(自然科学版) ›› 2013, Vol. 35 ›› Issue (2): 102-108.

• 石油与天然气工程 • Previous Articles     Next Articles

Influence of Reservoir Mineralogical Composition on AcidFracture Conductivity

Li Qin1, Yi Xiangyi1，2, Lu Yuan1, Song Yi3   

  1. 1. School of Energy Resources，Chengdu University of Technology，Chengdu，Sichuan 610059，China2. State Key Lab of Oil and Gas Reservoir Geology and Exploitation，Chengdu University of Technology，Chengdu，Sichuan 610059，China3. Gas Production Technology Research Institute，Southwest Oil & Gas Field Company of PetroChina，Guanghan，Sichuan 618300，China
  • Received:1900-01-01 Revised:1900-01-01 Online:2013-04-01 Published:2013-04-01

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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