Research On CO₂Injection Technology

Difficult-to-produce reserves refer to the proven reserves which are hard to exploit under the existing technical and economic conditions. At the same time, Difficult-to-produce reserve is a relative concept. If divided by the standard of technology, difficult-to-produce reserves refer to the reserves which have difficult natural conditions and hard to exploit, and these reserves are generally divided into three types:the rocks’physical property are bad; the second is the product’s characteristic is not good with large viscosity and fluidity limits, such as the heavy oil reserves which are mainly distributed in liaohe oilfield, shengli oilfield and songliao basin; the last one is the reservoir with high water which is at later stage of development.In this paper, I do hierarchical analysis and research about the wells, subdivide the sandstone groups and small layers, complete the stratigraphic correlation. By making major reservoir’s micro structure diagram, the distribution diagram of the sand body, sedimentary microfacies plan and profile map; by doing research about the reservoir lithology, physical property, anisotropies and the distribution regularity of sand body, By constructing fine interpretation, seismic attribute prediction, wave impedance inversion, the oil sands group interwell methods such as contrast,I complete the detailed interpretation of the structure, the research of sedimentary microfacies and the reservoir characteristics.This paper focuses on analyzing the production wells in the potential areas, doing feasibility research and comprehensive adjustment study.Through the above research, we obtain the benefit C622block in trap recognition, completed the work area of remaining oil distribution research and submit reports and figure.