The Compatibility Study on Gas Field Water Recycling the Section of Da'anzhai Reservoir in the Middle of Sichuan Gas Fiel

To reduce the influence of gas field water to environment, ensuring the reasonable exploration to gas field, the most effective processing mode to it is heterostrate recycling process.For ensuring the success of recycling and the normal movement of recycling system, we should carry on the matching experiments.Aiming at the water quality characteristics of Xujiahe group, Jia'er section as well as Changxing group in the middle of Sichuan, we proceed the matching experiments with for mation water and drilling cores of recycling layer Da'anzhai section, there by recognized the influential factors of recycling, and put forward some corresponding solutions.On the basis of drilling core damage experiments, this article recommends the water quality index on gas field formation water recycling.