准噶尔南缘山前复杂构造Walkaway VSP三分量资料采集及效果分析  

Acquisition and application result analysis of three-component walkaway VSP data of complex piedmont structures at the southern margin of Junggar Basin

作　　者：程志国[1] 陈勇[1] 王晓涛[1] 陈鹏 蔡志东 CHENG Zhiguo;CHEN Yong;WANG Xiaotao;CHEN Peng;CAI Zhidong(Institute of Geophysics,Research Institute of Exploration and Development,Xinjiang Oilfield Company,PetroChina,Urumqi,Xinjiang 830013,China;Urumqi Branch,GRI,BGP Inc.,CNPC,Urumqi,Xinjiang 830016,China;New Resources Geophysical Exploration Division,BGP Inc.,CNPC,Zhuozhou,Hebei 072750,China)

机构地区：[1]新疆油田分公司勘探开发研究院地球物理研究所,新疆乌鲁木齐830013 [2]东方地球物理公司研究院乌鲁木齐分院,新疆乌鲁木齐830016 [3]东方地球物理公司新兴物探处,河北涿州072751

出　　处：《石油地球物理勘探》2022年第1期74-81,I0003,I0004,共10页Oil Geophysical Prospecting

基　　金：国家油气重大专项“准噶尔前陆冲断带油气成藏、关键勘探技术与新领域目标优选”(2016ZX05003-005)资助。

摘　　要：准噶尔盆地南缘山前构造复杂,油气勘探潜力大。高探1井获得高产油气流,高泉背斜目的层埋藏深、小断裂发育、储层薄,地面地震采集资料分辨能力非常有限。为此,开展了Walkaway VSP(W-VSP)技术攻关,实施了三条W-VSP三分量资料采集。资料对比分析表明,W-VSP资料分辨率明显高于地面地震,能够较清楚地识别小断裂和薄储层,为高泉背斜主要油气层展布及油气藏分析提供了依据,同时也为W-VSP在新疆油田的应用推广提供了经验借鉴。The piedmont structures at the southern margin of the Junggar Basin are complex,with great oil-gas exploration potential.Well GT1 has achieved high-yield industrial oil-gas flows.In contrast,the target formations of the Gaoquan Anticline are deeply buried,the reservoir is thin,and small faults have developed.Consequently,surface seismic data has a limited resolution.In response,efforts are made to achieve technical breakthroughs in walkaway vertical seismic profile(W-VSP).Three-component W-VSP data are collected.Comparative data analysis shows that the resolution of W-VSP data is significantly higher than that of the surface seismic data and small faults and thin reservoirs are thereby clearly identified.This research not only provides a basis for analyzing the distribution of main oil-gas target formations and the types of oil-gas reservoirs of the Gaoquan Anticline but also offers experience for W-VSP application at Xinjiang Oilfield.

关 键 词：Walkaway VSP 三分量 薄储层 小断裂 

分 类 号：P631[天文地球—地质矿产勘探]