地球物理方法在中国油气资源战略选区中应用的可能性——以藏北羌塘盆地为例
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摘要
简要回顾了地球物理方法技术在国内几个油田发现过程中的作用。针对中国油气资源战略选区中普遍存在的方法技术问题,以羌塘盆地为例,进行了较为全面深入的剖析。通过对已有资料和成果的分析,认为羌塘盆地实现战略发现的时机已经成熟。而要实现战略发现,目前亟待解决的问题是打参数井、圈定局部构造和寻找合适的方法技术。鉴于羌塘盆地特殊的自然环境和地质条件,提出了高精度大地电磁法、自然电场法、特殊条件下的地震勘探、井地联合地震勘探等关键技术。具体的工作部署是:查明有利区带中最有利的局部构造和构造部位,在最有利的构造部位实施参数井钻探,围绕参数井开展地质、地球物理勘探与综合研究。这些技术和方法的应用有望使羌塘盆地的油气勘探工作迈上新台阶。
The role of geophysical methods and techniques in the process of finding some oil-gas fields in China is reviewed briefly. Take the Qiangtang basin for example, the problems of methods and techniques that commonly arise in China′s strategic petroleum target area selection are analyzed relatively completely and intensively. Through an analysis of available data and results, it is believed that the conditions for the strategic discovery of oil-gas accumulations in the Qiangtang basin have been ripe, and to realize the strategic discovery, what must be done is to drill parameter holes, delineate local structures and try to find suitable methods and techniques. Highly precise MT, self-potential methods, seismic exploration in special conditions and integrated well and surface seismic exploration are put forward according to the particular natural environment and geological conditions of the basin. The flow chart for finding oil-gas accumulations in the Qiangtang basin is as follows: first, delineate the most favorable local structures and particular sites in favorable districts or zones; then, drill parameter wells at the most favorable structural sites, and finally, perform geological-geophysical exploration and comprehensive study around the wells. The application of these methods and techniques would make oil and gas exploration in the Qiangtang basin step into a new stage.
The role of geophysical methods and techniques in the process of finding some oil-gas fields in China is reviewed briefly. Take the Qiangtang basin for example, the problems of methods and techniques that commonly arise in China′s strategic petroleum target area selection are analyzed relatively completely and intensively. Through an analysis of available data and results, it is believed that the conditions for the strategic discovery of oil-gas accumulations in the Qiangtang basin have been ripe, and to realize the strategic discovery, what must be done is to drill parameter holes, delineate local structures and try to find suitable methods and techniques. Highly precise MT, self-potential methods, seismic exploration in special conditions and integrated well and surface seismic exploration are put forward according to the particular natural environment and geological conditions of the basin. The flow chart for finding oil-gas accumulations in the Qiangtang basin is as follows: first, delineate the most favorable local structures and particular sites in favorable districts or zones; then, drill parameter wells at the most favorable structural sites, and finally, perform geological-geophysical exploration and comprehensive study around the wells. The application of these methods and techniques would make oil and gas exploration in the Qiangtang basin step into a new stage.
引文
[1]王剑,谭富文,李亚林,等.青藏高原重点沉积盆地油气资源潜力分析[M].北京:地质出版社,2004.
[2]余家仁,雷怀玉,王权,等.羌塘盆地构造单元划分及含油气评价[J].新疆石油地质,2003,24(6):509-512.
[3]黄继钧,伊海生,林金辉.羌塘盆地构造特征及油气远景初步分析[J].地质科学,2003,39(1):1-10.
[4]卢明,童小兰,王必金.藏北羌塘盆地油气勘探前景探讨[J].油气地质与采收率,2004,11(3):28-30.
[5]丁文龙,苏艾,李伟.西藏羌塘盆地中生代海相地层含油气系统及勘探方向[J].天然气工业,2003,23(1):13-17.
[6]杨日红,李才,杨德明,等.西藏羌塘盆地中生代构造岩相演化及油气远景[J].长春科技大学学报,2000,30(3):237-242.
[7]罗建宁,谢渊,王小龙,等.羌塘盆地石油地质条件与初步评价[J].沉积与特提斯地质,2003,23(1):1-15.
[8]郭祖军,王宜昌,叶和飞.再论羌塘盆地构造单元划分及含油气远景[J].新疆石油地质,2004,25(3):244-247.
[9]曾宪斌,万玉金,陈孟晋,等.羌塘盆地封存条件与有利勘探区带筛选[J].海洋地质与第四纪地质,1998,18(2):91-96.
[10]谭富文,王剑,王小龙,等.西藏羌塘盆地——中国油气资源战略选区的首选目标[J].沉积与特提斯地质,2002,22(1):16-21.
[2]余家仁,雷怀玉,王权,等.羌塘盆地构造单元划分及含油气评价[J].新疆石油地质,2003,24(6):509-512.
[3]黄继钧,伊海生,林金辉.羌塘盆地构造特征及油气远景初步分析[J].地质科学,2003,39(1):1-10.
[4]卢明,童小兰,王必金.藏北羌塘盆地油气勘探前景探讨[J].油气地质与采收率,2004,11(3):28-30.
[5]丁文龙,苏艾,李伟.西藏羌塘盆地中生代海相地层含油气系统及勘探方向[J].天然气工业,2003,23(1):13-17.
[6]杨日红,李才,杨德明,等.西藏羌塘盆地中生代构造岩相演化及油气远景[J].长春科技大学学报,2000,30(3):237-242.
[7]罗建宁,谢渊,王小龙,等.羌塘盆地石油地质条件与初步评价[J].沉积与特提斯地质,2003,23(1):1-15.
[8]郭祖军,王宜昌,叶和飞.再论羌塘盆地构造单元划分及含油气远景[J].新疆石油地质,2004,25(3):244-247.
[9]曾宪斌,万玉金,陈孟晋,等.羌塘盆地封存条件与有利勘探区带筛选[J].海洋地质与第四纪地质,1998,18(2):91-96.
[10]谭富文,王剑,王小龙,等.西藏羌塘盆地——中国油气资源战略选区的首选目标[J].沉积与特提斯地质,2002,22(1):16-21.
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