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Paper Dagang Oilfield Tangjiahe structure Shahejie as the research object, the guidance of the basic theory and methods of structural geology, petroleum geology, seismic exploration, logging, seismic data interpretation proceed from the division of strata, make full use of logging reservoir , random statistical inversion of seismic wave impedance inversion, resistivity, Tangjiahe construct Shahejie structural characteristics and reservoir distribution characteristics of in-depth research. The paper to carry out the technical difficulties that (1) in the study area is not stable the mudstone or oil shale, logging curve standardization standard layer selected. (2) The reservoir thickness of less than 5m, to solve the problem of thin reservoir inversion. Papers selected block selected a few mouthfuls of key wells, and then select the oilfield range Mainland layer thickness plane stable distribution, lithology and log response feature marks a clear target layer to a standard layer method to solve the problem of logging standardized ; joint inversion using constrained sparse pulse inversion and geostatistical stochastic simulation method to solve the problem of reservoir thin layer. Carried out through the papers, the results of: (1) establishing a standardized method of logging curve for Tangjiahe. Papers histogram shifting method of acoustic logging curve and deep resistivity curve correction, by drawing the key wells standards layer acoustic time, the deep resistivity frequency histogram to determine the standard layer acoustic time is 290μs / m deep The resistivity value of 3.0Ω · m, the other wells one by comparison with it, to determine the correction value. (2) fine structural interpretation, produced multi-well synthetic seismogram, improve understanding of the region's speed, speed and accurate calibration, the velocity model of the region. Papers in the course of the study, starting from the basic theory, basic method of synthetic seismogram, according to the Tangjiahe oil field is located in fracture development zone, stratigraphic and lithologic features there are differences, the region vertical wells, inclined elaborate synthetic seismogram to the seismic data of the region's fine calibration of the velocity model for the region, this area is basically the same speed and the formation speed of the entire North China. (3) through the layers modeling, the Tangjiahe the spatial geological model and the low-frequency wave impedance model. Fine structural interpretation of seismic data as the basis for the establishment of basic reflect the geological characteristics of sedimentary bodies initial model. Selection of the oil layer of the bridge, Bin I, Bin II, Bin III interpretation layer and fracture interpretation of data constraints, matching layers and layers in the space between the horizon and fault, fault and fault cross-cutting relations, the geological rules geological model; on the horizon and fault processing, combined with logging data, the internal data interpolation comply with the laws of geological low-frequency wave impedance model. (4) a combination of two inversion methods, basically solved the problem of thin reservoir identification in the region. Paper with a constrained sparse pulse inversion and geostatistical stochastic simulation inversion the two inversion method to identify the thin reservoir. From the wave impedance inversion results, the macro can reflect the approximate distribution of the sand body, but due to the wave impedance inversion of seismic data resolution, unable to distinguish between small sand body distribution, so the wave impedance inversion based on the application of geostatistical stochastic simulation-based method to simulate the distribution characteristics of the sand body. The Tangjiahe carried out through the papers got six layers, structural mapping layer to explain the description construct 25 major faults, clear spatial distribution characteristics of the the Tangjiahe oilfield sand bodies, describing the oil sands 12. High layer as a starting point to track the oil yield, to determine the distribution and thickness of the oil sands. The track sand body, the overall development is good, very good results compared to the previous pattern adjustment and rolling increasing reserves.
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