Formation Protection Technique for drilling and Completion in Fractured Porous Reservoirs in Xiaoguai Oilfield, Xiujiang

This paper analyzes the reservoir features of Xiaoguai oilfield and studies bridging regularities and damaging factors of additives with focus on core bridging regularity of single fracture. On base of these studies, this paper discusses the damaging factors of the drilling and completion fluid systems used in Xiaoguai oilfield and provides a modified formulation of drilling and completion nuid system in which a newly developed multifunctional oil layer protective agent JQD is used.