The Application of Coiled Tubing Staged Fracturing Technology in Dagang Oilfield Low Porosity and Permeability Reservoir

With the increasing exploration and development activities of unconventional reservoirs including low porosity and permeability reservoirs in Dagang Oilfield, coiled tubing staged fracturing technology has been an efficient fracturing means of reservoir reconstruction. Coiled tubing staged fracturing technologies implemented in Dagang Oilfield include coiled tubing within cable clustering perforating staged fracturing technology, coiled tubing plug-drilling-free full bore cementing sleeves staged fracturing technology and coiled tubing abrasive perforating staged fracturing technology. Technology comparison and analysis were conducted between the three coiled tubing staged fracturing technologies in this paper. The three coiled tubing staged fracturing technologies were successfully applied in oil field, and the result of reservoir reconstruction is obvious, enhancing recovery factor, providing new tools and technology reference for the domestic low porosity and permeability reservoir development.