Research In Distribution Laws Of The Residual Oil And Development Potential In 1st Sand Group Of The Forth Member In Guangbei Region

Residual oil is huge potential resource, man make great effort to work in the remaining oil in order to raise the recovery ratio. Research of residual oil generation and distribution is a worldwide problem in the oil industry, a focus of most attention in the petroleum exploration and development currently and also is one of the three core technologies of oil field development.Methods of studying in residual oil generation and distribution can be described as "a hundred schools contend, each has its advantages "presently. However it can be divided into 3 kinds: macro studies, micro studies and residual oil saturation. It can be divided into the following specifically: the development geological method, the reservoir engineering method, logging method, numerical simulation method of high resolution sequence stratigraphy, and method of micro residual oil generation and distribution.Guangbei area, one part of Bamianhe oilfield in the east of slope in Dongying Sag, 1st sand group of the Forth Member mainly develops shallow-lake subfacie, structural-lithologic reservoir; it is mainly in 6th block, 8th block and 9th block of Guangbei area. It has reported about 25.3 million ton proved reserve, and until end of 2010, the degree of reserve recovery was 4.9%, and the oil production rate is 0.38%, so the producing performance is disbennifit, and the producing degree is low. Analyze causes, it mainly because of follows: First, the reservoir characterization is not clear enough; the integral hysical property is poor, and the producing degree is low. Second, it is feeble of the natural energy, and producing energy is deficient. Third, part well pattern is not consummate, the well select, the well pattern, and the allied technology have to be optimized.As a result, how to describe the distribution of remaining oil in the study area elaboratly, research the potential of development and deployment, is the next nuclear basis to formulate a scientific development program, it's of important practical significance to guide the effective use of reservoirs , and to improve the effect of block development .The study have taken full advantage of three-dimensional seismic data, drilling data, logging data, core analysis, and dynamic data, Based on the studying of log interpretation standard, refined coenocorrelation and heterogeneity, using the reservoir description technology, dynamic analysis technology, and the combination of reservoir engineering technology, have studied the distribution of remaining oil of the oilfield, and have gain perfect benefit. Last, we have carried out well type, well network and technology optimization to determine the development approach by studying the development of features, mode of development and adaptation assessment process. And on these bases, we have completed arrangement.