Drilling Fluid Anti-Leakage Technology for Shale Gas Horizontal Well of Fuling Area
TAN Xi-shuo;Design and Supervision Center for Geological Engineering,Jianghan Oilfield,SINOPEC;
According to the geological characteristics of the fractured shale bedding layer in Fuling area,the paper develops the anti leakage of oil base drilling fluid for drilling shale gas in large displacement horizontal wells. Early in the anti leakage oil base drilling fluid formulation in Fuling area,the indoor test R D achieves a lot of success. The field application in Da'anzhai block site and in Fuling rock dam block shows that the effect of anti leakage of oil base drilling fluid shale on micro crack sealing is remarkable; the drilling fluid cleaning hole, borehole stability of anti sloughing,lubricity and anticard capacity all meet the construction requirements of large displacement horizontal well drilling in Fuling area. The successful application of anti leakage of oil based drilling fluid improves the mechanical drilling speed,reduce the failure of complex time,shortens the drilling cycle,and provides a technical support for the efficient development of shale gas resources.
【CateGory Index】： TE254