Oil Pressure Block In Northern Putaohua Combining Well And Layer Selection Method

North Putaohua to invest in developing oil fields in 1979, 1990, a encryption adjustment, 1998 adjusted non-uniform secondary encryption. As the annual workload of more fracturing, fracturing potential of low water content decreased year by year, remaining oil work has shifted to high moisture content well, as the oil fields are developed, water gradually rose, Fracturing Potential targets gradually from low water changes to the high water cut oil wells. Putaohua oil reservoir for the fluvial sand body between the various properties, thickness, connectivity, area have very different terms. Material is good, thick, good connectivity, good relations between injection and high oil flooding, the purpose of remaining oil distribution measures the thickness of layer of mostly small, imperfect relationship between injection and production, the obvious contradiction between layers, a simple fracture of the target layer, it is difficult to achieve better results. Well as an integrated combination of pressure block adjustment measures, can effectively block high fluid reservoir to improve permeability thin poor layer, and solve conflicts between layers, in the Putaohua north region has a wide prospect. Thereby enhancing the economic benefits of oil field development. From the Putaohua north region of reservoir sedimentary features starting with the distribution of sedimentary strata, using the guidance of fine geological research remaining oil distribution in the vertical and the surface that the distribution of remaining oil, and then analyzes the different sand body oil pressure Cunzai cracking potential; by Sipachev Shui drive characteristic curves predicted with high potential wells of measures to guide fracturing wells in northern Portugal, by analyzing the water reservoir fluid production characteristics determine the main producing high water level, water blocking layer selection guide; by forecast liquid production of layered and dynamic means of production, annulus correction to the pressure to find water information to select well plugging; pressure according to the specific blocking effect of single well summed up in northern Portugal and pressure blocking well and layer selection method, guiding with high remaining oil wells measures to improve the field development cost.