Shallow Reservoir Comprehensive Evaluation And Research In Gangzhong Oilfield

In Gangzhong Oilfield and surrounding areas the geologists found the Minghuazhen, Guantao, Dongying and Shahejie formation as sets of oil-bearing series after 40 years of exploration and development. The tectonic location develops with Gangxi and Gangdong secondary oil source fault with sufficient oil source condition. Gangzhong Oilfield belongs to the Neozoic oilfield, which has entered the stage of secondary development. In 2007, at the same time with fine structure interpretation, old well reservoir review has got big breakthrough. As the theory and technology gradually improve, reservoir secondary evaluation especially for the shallow reservoirs which has not been fully aware of gas is imperative.On the basis of geophysical and petroleum geology, integrated structure, sedimentary and sequence theory, we make full use of the work area of seismic data, logging data, mud logging and core data, oil testing exploration and production information data. According to the developmental characteristics of sequence interface at all levels, do tracking using multi-scale structural description technology series establishing sequence stratigraphic framework. In establishing the sequence stratigraphic framework, according to the analysis of single well facies and well tie backbone profile, using fine reservoir characterization technology series, we study of sedimentary microfacies and sand body distribution in layers and reveal the time and space evolution law of sedimentary system. For salt water mud invasion existing in work area and the low resistance reservoir, correction and model establish work is essential. More suitable log interpretation standard for the work area should be set up also. Properties integrated interpretation technology, direct detection of oil and gas in reservoir evaluation and the evaluation of the capacity analysis work well in the process. In this research, the reservoir distribution, the relationship between oil and water layer, reservoir-forming regularity of shallow reservoirs in Gangzhong Oilfield can have the further understanding which has important reference significance and value for Beidagang oilfield exploration and development.