辽东湾31-6区块隐蔽油气藏的地球物理识别  

Geophysical recognition of subtle oil/gas reservoir in block 31-6 of Liaodong Bay.

作　　者：刘志斌[1] 李绪宣[2] 李幼铭[1] 孙翠娟[2] 

机构地区：[1]中科院地质与地球物理研究所 [2]中海石油研究中心

出　　处：《石油地球物理勘探》2006年第2期198-203,共6页Oil Geophysical Prospecting

摘　　要：辽东湾探区的隐蔽油气藏勘探既有成功的例子,也有失败的例子,说明识别隐蔽油气藏有很大的难度。为此本文提出了一套开展辽东湾地区隐蔽油气藏勘探的地球物理识别技术流程。在研究中,首先利用岩石物理测试数据建立岩石物理模型进行横波速度反演,再通过沉积规律研究、地震相分析、时频分析等研究成果确定隐蔽油气发育带;在横波速度反演的基础上,通过弹性波阻抗反演进行岩性预测,有效地识别储层;在砂体识别基础上,利用AVO属性分析、吸收分析、多属性分析等方法综合分析储层的含油气性。利用这套识别技术对 31—6a目标进行了储层和含气性预测,认为该目标为含气圈闭。The exploration of subtle oil/gas reservoirs in Liaodong Bay zone has both successful cases and failure cases, showing the difficulty in recognition of subtle oil/gas reservoirs. For that reason, the paper presented a set of technical flows of geophysical recognition for developing the exploration of subtle oil/gas reservoirs in Liaodong Bay area. During the study, we firstly used physical test data of rocks to build up petrophysical model and to conduct inversion of S-wave velocity, then, defined the developed zones of subtle oil/gas reservoirs by the studied results of sedimentary rule, analysis of seismic facies and time-frequency analysis etc; conducted lithologic prediction for effective recognition of reservoirs by inversion of elastic wave impedance on the basis of inversion of S-wave velocity; comprehensively studied the oil/gas-bearing a-bility of reservoirs by using analysis of AVO attributes, analysis of absorption and multi-attributes analysis. By using this set of recognizing techniques to predict the reservoirs and gas-bearing possibility of 31-6a target, we consider that the target is gas-bearing trap.

关 键 词：隐蔽油气藏 弹性波阻抗反演 储层预测 岩石物理模型 多属性 辽东湾 

分 类 号：P618.13[天文地球—矿床学] TP391.4[天文地球—地质学]