An invention of Henan Oilfield Research Institute was authorized by the national patent

Recently, the Development Research Institute of Henan Oilfield Research Institute declared the "Method and Device for Identifying Advantageous Reservoirs of Tight Sandstone Oil Reservoirs in Multi-stage Stacked Rivers" authorized by the State Patent Office
.

The reservoir of Weibei Oilfield in Henan Oilfield has developed multi-stage river channels, longitudinal sandstone and mudstone interaction development, and strong reservoir heterogeneity, resulting in large differences in planar production capacity and difficulty in identifying production capacity
desserts.

In order to solve this problem, the invention proposes a method for identifying dominant reservoirs in tight sandstone reservoirs with multi-stage superimposed river channels, which divides the main body of the river channel and the secondary channel sand body by combining the curve morphology, block layer thickness and other parameters, uses the sand body grading and filtration method to depict the main river channel morphology, determines the boundary of the single river channel, and under the guidance of the research idea of sand body configuration, the dominant sand body is dissected and finely described step by step, and the dominant reservoir and production capacity dessert
are identified.

After the application of the invention, more than 100 oil-water wells have been deployed in Weibei Oilfield, and the wells have been drilled into good oil and gas display, which verifies the effectiveness and accuracy
of the technology.