红星地区J34块火成岩储层地球物理响应特征

Geophysical Response Characteristics of Block J34 Igneous Reservoir in Hongxing Area

综合应用地震、录井、测井及分析化验等方法,对辽河坳陷红星地区J34块沙三段火成岩储层的岩性、岩相、储层分布及其地球物理响应进行了研究。结果表明,该区火山岩储层岩性为粗面岩、粗面质角砾岩,粗面岩储层岩相为溢流相,储层段在顶部风化层、底部爆裂缝,储层呈薄层状,分布范围较广;粗面质角砾岩储层为爆发相,就近堆积,储层厚度大,平面分布范围局限,沿断层叠瓦状分布。通过对该区火山岩的测井特征、地震特征等地球物理响应研究,来进行岩性识别和储层预测,进而指导评价部署。

The lithology, lithofacies, reservoir distribution and geophysical response of igneous rock reservoir of block j34 in Hongxing area of Liaohe depression are studied by comprehensive application of seismic, mud logging, logging and analytical assay. The lithology, lithofacies, reservoir distribution and geophysical response of igneous rock reservoir of block J34 in Hongxing area of Liaohe depression are studied by comprehensive application of seismic, mud logging, logging and analysis. The results show that the lithology of volcanic reservoir in this area is trachyte and trachyte breccia, and trachyte reservoir lithofacies is overfow facies. The reservoir section is burst crack at the top weathering layer and the bottom, and the reservoir is in the form of a thin layer and widely distributed. The trachyte breccia is an explosive facies, deposited nearby, with large reservoir thickness and limited plane distribution, and distributed along the fault stack tile shape. The lithology identifcation and reservoir prediction are carried out by studying the geophysical response of volcanic rock such as logging characteristics and seismic characteristics in this area, thereby guiding the evaluation and deployment.