Discussion on influential factors of test gas in Cenye-1 well

Cenye-1 well is one of the first shale gas exploration wells over kilometers deployed in the North Guizhou area by Ministry of Land and Resources and it was drilled and deployed under relatively weak geological conditions.Through the wellhead conversion and full demonstration,the hydraulic fracturing on test gas has been carried out.Although the fracturing construction was smooth and realized the basic objective of outlet ignition,the commercial gas flow cannot be achieved.The main reasons are as the follows:the preliminary geological research is not enough,storage conditions of shale gas in well area is poor and it is on the natural fractures of the broken belt,resulting in a lot of water.The well drilling and fracturing gas test proved Niutitang shale in lower Cambrian once generated gas.If a favorable area of moderate depth,agood preservation condition and stable formation can be found,there is a good potential on commercial gas flow.