论文部分内容阅读
川东北地区的油气资源丰富,具有很好的勘探潜力。运用二维地震资料划分地震层序,对川东北下沙溪庙组的地震相进行分析研究,划出区域和储层两大类。区域地震相主要有较连续平行反射地震相、变振幅断续亚平行地震相和强弱变振幅不连续波状反射地震相3种,储层地震相主要有前积地震相和下切充填地震相。编制了下沙溪庙组地震相平面分布图,并对区内地震相的分布规律和演化进行了分析。
The oil and gas resources in northeastern Sichuan are rich and have good exploration potential. Using two-dimensional seismic data to divide the seismic sequence, the seismic facies of Xiashaximiao Formation in northeastern Sichuan were analyzed and studied, and the two major categories of reservoir and region were identified. There are three kinds of seismic facies in the regional seismic facies, which are continuous parallel reflection seismic facies, intermittent sub-parallel seismic facies with variable amplitudes and discontinuous undulating seismic facies with strong and weak amplitudes. The seismic facies of the reservoirs are mainly the foreshock facies and the sub-cut filling facies. The seismic facies distribution map of Xiashaximiao Formation was compiled and the distribution and evolution of seismic facies in the area were analyzed.