鄂尔多斯盆地榆林区山西组砂岩气藏岩性地震勘探  

LITHOLOGICAL SEISMIC EXPLORATION FOR THE SANDSTONE RESERVOIRS IN SHANXI FORMATION OF THE LOWER PERMIAN AT YULIN REGION IN EERDUOSI BASIN

作　　者：韩申庭[1] 杨华[1] 王大兴[1] 赵玉华[1] 

机构地区：[1]长庆石油勘探局

出　　处：《天然气工业》1998年第5期10-13,共4页Natural Gas Industry

摘　　要：鄂尔多斯盆地长庆气田榆林区（陕１４１井区）的主要产气层是上古生界下二叠统山西组，１９９６年起地震工作提前介入该区的天然气勘探及井位部署。从高分辨率采集地震资料入手，重点采取了人机交互折射波静校正和分频处理等６项特色技术，利用测井约束地震高分辨率反演和高阻抗砂岩储层ＡＶＯ分析等９项储层横向预测技术，创立了一套有效的山西组砂岩储层厚度解释及天然气检测技术，对山２段砂岩储层提供探井井位１４口，预测成功率达８５．７％。由此，盆地上古生界天然气勘探接连获得重要发现和重大进展，１９９７年榆林区提交了相对独立的近千亿立方米的天然气探明和控制储量。The main gas bearing formations at Yulin region(well Shaan 141 area)of Changqing gas field in Eerduosi Basin are the high impedance sandstone reservoirs in Shanxi Formation,Lower Permian,Upper Paleozoic.The seismic works were beforehand involved in the natural gas exploration and well location disposition at the region in 1996.On the basis of the high resolution acquisition of seismic data,a set of techniques of effectively interpreting the thickness of the sandstone reservoirs in Shanxi Formation and detecting the natural gas in them are founded through emphatically adopting 6 items of characteristic techniques as the interactive refraction wave static correction and frequency division processing,etc.,and applying 9 items of reservoir lateral prediction techniques as the logging constrained seismic high resolution inversion and high impedance sandstone reservoir AVO analysis,etc.14 locations of exploration wells were provided for the sandstone reservoir of the second member of Shanxi Formation and the prediction success ratio was up to 85.7%.Because of this,some important discoveries and significant advances have been obtained in natural gas exploration in Upper Paleozoic in the basin and the proved and controlled gas reserves of near 1 000×10 8m 3 were found at Yulin region in 1997.

关 键 词：砂岩气藏 地震勘探 气藏勘探 

分 类 号：P618.130.8[天文地球—矿床学] P631.4[天文地球—地质学]