海洋地质前沿2024，Vol.40Issue(4)：83-91,9.DOI:10.16028/j.1009-2722.2023.138
东海M构造中深层低渗气藏"甜点"预测技术
"Sweet spot"prediction technique for mid-deep low permeability gas reservoirs in M Structure of East China Sea
摘要
Abstract
In recent years,structural-lithological complex reservoirs have gradually become the key in reservoir expansion and production in the East China Sea.The low permeability gas reservoir in the middle and deep low-permeability gas reservoir in the M Structure of the East China Sea was studied.The study area has large burial depth,strong internal heterogeneity,and complex porosity-permeability relationship,but little difference in geo-physical response characteristics.It is urgent to study the fine characterization of sweet spot reservoir in the reser-voir.Seismic rock physics were analyzed,in which the Young's impedance was used to distinguish clastic rock reservoir from non-reservoir.By classifying and optimizing parameters in seismological profiling,shear modulus was found and used as a comprehensive sensitive elastic factor,and combined with a high sensitivity hydrocarbon detection factor,clear clean,coarse-grained,and high-permeability high quality reservoirs could be detected.In addition,to reduce the influence of rock skeleton porosity,a highly sensitive fluid factor was used to detect hydro-carbons.Finally,combined with lithology and attributes of hydrocarbon detection,good sweet spot reservoir areas were finely characterized.Results show that the sweet spot prediction using this method reached a high successful prediction rate of 86.07%,which provided an important basis for well deployment and trajectory optimization and a reference for working on similar blocks.关键词
低渗气藏/地震岩石物理/保幅去噪/叠前反演/"甜点"预测Key words
low-permeability gas reservoir/seismic rock physics/amplitude preserving denoising/pre-stack in-version/sweet spot prediction分类
海洋科学引用本文复制引用
秦德文,张岩,于杰..东海M构造中深层低渗气藏"甜点"预测技术[J].海洋地质前沿,2024,40(4):83-91,9.基金项目
中海油有限公司重大科技专项课题"东海西湖凹陷大中型气田勘探方向及关键技术研究"(24E-Y423RY05.06) （24E-Y423RY05.06）
