Fracturing Technology For Extra-Low Permeability Reservoir In Zhidan District Of Ordos Basin

Extra-Low Permeability Reservoir in Zhidan District of Ordos Basin was the main exploration eara of Yanchang Oilfield Co., Ltd., which production ranked fourth. With the development of the Oil and Gas field and the increasement of the crude oil production in Zhidan district, the fracturing process measures become increasingly obvious. The main prolem was the single fracturing process design and fluid system and non-pertinence, which effect the fracturing process results of Zhidan district seriously. Therefore, this paper aims to study a set of fracturing process and supporting technology with efficient, practical and advanced, which is suitable for the extra-low permeability reservoir in Zhidan district, to increase the individual well productivity and enhances the effects of fracturing process. This study has very important practical significance to the efficient development of oil and gas reservoirs and enhanced oil recovery.This paper analyzed the reservoir compression fracturing transformation technology multitudinous difficulty of extra-low permeability reservoir in Zhidan district, base on the basic geological features, the type and extent of injury as well as the domestic and foreign literature inversigation and study foundation, proposed to carry out the idea of extra-low permeability reservoir fracturing process and its supporing technology research and technical route with the methods of fracturing techonolgy theoretical analysis, fracturing formulation research and on-site analysis of experimental results. By systematic analyzing the successful results of fracturing process, combine the specific geological features of Zhidan district, as well as the latest experimental research results, researching the fracturing technology in this stdy area. These will provide the important theory basis for the next step of scene construction transformation.