Petrochina Company Limited

Chengwen Xiao

Peng Liu

Qiang Chen

Hongbo Guo

Shengqiang Zhang

Zhenyuan Luo

Chuan Hai

Ni Liu

A method for determining an oil-gas-water interface based on the formation pressure equivalent density. The method comprising: determining working parameters of the wireline modular formation tester based on the acquired conventional logging data of a block to be studied; acquiring a series of formation pressure and corresponding depth data based on the working parameter; computing formation pressure equivalent densities at different depths based on the formation pressure and the corresponding depth data; drawing a crossplot of the formation pressure equivalent density and the depth according to the formation pressure equivalent density and the corresponding depth data at the different depths; and determining the oil-gas-water interface according to the position of breaking point of the formation pressure equivalent density on the crossplot of the formation pressure equivalent density and the depth.

Method and apparatus for determining oil-gas-water interface based on formation pressure equivalent density

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Beijing, China

Chengwen Xiao