Clastic Reservoir Prediction Of Lunxi 1 Well Block In Tabei Uplift, Tarim Basin

Jurassic formation of Lunxi 1 Well block in Tabei uplift is our target in this thesis. It discusses the principles and methods of integrated seismic and geologic prediction of reservoirs, emphasizing on integrated seismic prediction of reservoirs. In terms of the characteristics of strongly lateral variation in reservoir heterogeneity of Jurassic formation in Lunxi 1 Well block, we use a variety of information including seismic, geological, logging, drilling, testing to carry out integrated seismic and geologic prediction of reservoirs and hydrocarbon detection research in order to find favorable reservoir and hydrocarbon accumulation zones. The purpose of this thesis is to explore the effective approach of reservoir comprehensive prediction for study area of which the geological conditions is special, improving precision of reservoir prediction and hydrocarbon detection, and to provide a reliable basis for the future exploration of the area.Due to the above situation, based on high resolution seismic data, following the guidance of sedimentary system analysis and sequence stratigraphy theory, in terms of the established framework model of sand and accumulation model, this thesis use applicable depositional systems analysis and reservoir seismic prediction technology to predict and describe reservoir physical properties as well as sand and evaluate the hydrocarbon potential for the purpose of predicting lateral reservoirs.Main completed work involving: based on the previous seismic, geological knowledge and the known drilling and oil field development information, comprehensive interpretation of Lunxi 1 Well block three-dimensional seismic data by LandMark system is completed; use well data producing synthetic seismograms to carry fine calibration of each group of the Cretaceous and Jurassic strata; on the basis of the calibration, carry out detailed interpretation of seismic horizons to proceed fine structural interpretation combined with the time slice, seismic coherence, seismic attribute analysis techniques; in order to improve the quality and accuracy of the speed research, develop the speed research methods and processes, research variation of the region target layer average speed, establish three-dimensional velocity field of the target area, complete the target area layers variable velocity mapping, further improve the accuracy of structural interpretation, and do a brief analysis for the structural characteristics of this area; integrated use of logging constrained seismic inversion and reservoir prediction tuning technology to improve the vertical and horizontal resolution of seismic reservoir prediction, building high-precision reservoir models. Full using of dynamic data of development and production, carry out fine anatomy of the founded reservoir, comprehensive analyze combined with Multi-attribute, multi-information, preferably select the beneficial area and provide a favorable target on the basis of evaluating structure, geology, sedimentation and other factors.