Fine Reservoir Description Research Of High 3618 Block Lian Hua Reservoir

High 3618 block LianHua reservoir is a pure thick layer and heavy oil reservoir, oil bearing area of 1.16 km2, geological reserves of 1323.3×104t and calibration recovery ratio of 14.6%. In 1987, the reservoir was developed with steam huff and puff from the beginning. In recent years, due to reservoir geological characteristics, high recovery degree in the final stage of steam stimulation, low pressure of formation and poor effect of continuous steam stimulation, its production has declined comparatively faster and the ultimate recovery ratio is low.In this paper, we carried out comprehensive study to evaluate current reservoir condition and developing potential. the study combined with the data of drilled wells, including drilling, mud logging, well logging and 3D seismic data, etc. By using the technologies of fine stratigraphic correlation, reservoir comprehensive evaluation, logging identification, geological modeling, remaining oil research and numerical simulation, it do in-depth research and evaluation on the structural characteristics, sedimentary characteristics, reservoir characteristics, reservoir types and oil-water relationship, geological reserves, the effect of steam stimulation exploring and the rule of remaining oil distribution in high 3618 block LianHua reservoir. On this basis, according to the cognition of geological understanding of fine reservoir description and the distribution and potential of remaining oil, it advanced a reasonable development way to increase oil recovery next.