Gangbei Shahejie Formation Of Description And Special Lithology Evaluation

With our country contains reservoir exploration degree of further, land and sea oil exploration and development of the research development, especially for the development of the lithologic reservoir of probability is more and more big, the characteristics of the research is to lithologic increasingly gradually prosperous. According to the current material learned and exploration requirements, this research area in accord BeiDaGang faulted reservoir for structural belt to the north and north wing of the outer area not extend out, for the main purpose of shahejie formation of development of the limestone layer section, and will be of sandstone reservoir as auxiliary purpose layer.At present, according to the lithologic stratigraphic reservoir exploration and need to use effective technology and method of the support. In recent years, the relevant domestic scholars and experts in for special lithologic stratigraphic reservoirs in predicting and evaluating made important contribution, accumulated rich experience, especially in eastern special lithologic stratigraphic reservoirs description and goal evaluation made a lot of success, and received good effect, for special lithologic reservoir exploration and development of the research plays an important role. The author on exploratory research area, key research horizon for shahejie formation layer segment limestone, take account of shahejie formation of sandstone reservoir other section, the focus of the divided into two levels:(1) the vertical recession sedimentation sequence changes and contrast research;(2) for each layer of shahejie formation sedimentary evolution and comparative study. To learn basic point for sedimentary structure principles, the use of sequence stratigraphy of theories and research methods, to drill log and seismic sequence stratigraphic research as the core, the tectonic sedimentary evolution as the main line and point (drilling, logging)-line (earthquake, outcrop geological)-face (etc and lithologicinterface)-body(3d body)-(geological era) analysis methods, emphasis on drilling, well logging and seismic stratigraphy analysis method with the combination of comprehensive utilization, pay attention to the construction of the stage activities, cyclicity and sedimentary filling response corresponding relation, and to pay attention to the recession sedimentation sequence control filling sequences, sequence change rule, sedimentary facies of the control factors, the analysis of the mechanism and the order of sequence each purpose in the background of sedimentary facies reservoir facies distribution rule of research in accumulation of the control factors and oil comprehensive geological study, emphasize fracture, unconformity, reservoir type oil control, the impact of the joint structure trap closed performance and the way the elements petroleum geology matching effectiveness. Pay attention to analyze the seismic, logging phase and physical parameters and boundary conditions, and the corresponding relation of sedimentary facies, using the past attribute extraction, party a wave impedance inversion and forward modeling method, the favorable sedimentary and phase reservoir prediction, and sums up the rush of sequence fill mode and seismic facies reservoir sedimentary facies-model, this paper puts forward the opinion exploration deployment.In work area and even the accord has done faulted reservoir shahejie formation lacustrine carbonate rocks in the lake and reservoir system research, its sedimentary type and depositional model is not clear. Generally speaking, the sedimentary types can be divided into lakes biological reef, lakes particles carbonate rocks, micritic carbonate three kinds of sedimentary type, and determine the reservoir type and evaluation, sedimentary type and environment by lithofacies-paleogeographic background control function is bigger, sedimentary system has its own exhibition cloth rule, and lacustrine facies clastic special you forever (coexistence) rules. Dongying sag square king carbonate biological reef have the scale of the oil and gas output also shows that the the type of reservoir section has great potential oil and gas exploration. And in work area and accord faulted reservoir, has the lake lacustrine carbonate rocks in the development of tectonic background in more, accordingly, this research project, for oil and gas exploration potential of limestone area has practical significance, and start to faulted reservoir lake lacustrine carbonate rocks in the oil and gas exploration also has the theory instruction function.