Abstract:

The Jialingjiang formation of LujiaochangLiziba is a set of marine facies carbonate sediments, by analyzing geology, logging and cores, it isecognized the main types of reservoir pore spaces are porosity and fractureporosity. In the reservoir, the matrix porosity is small, and penetrability is low and fractures are the primary migration passage of gas and oil. Based on the anisotropy theory of seismic wave traveling, twodimensional fractal arithmetic is applied to predict the plane distribution of fractures in Tj22 and Tj21 .The result of prediction accords with logging and drilling interpretation. A good geological result is achieved. The plane distribution of fractures is a good reference for drilling in the future, and it has a guidable meaning to the exploration in the same area.

Key words: carbonate rock, fracture, twodimensional fractal, prediction, seismic, Sichuan Basin