摘要
根据对中国东部老区油气资源潜力再认识的国家需求,对目前国内外普遍使用的资源评价方法,即成因法、统计法、类比法的适用性和局限性进行了分析。针对国内外资源评价中存在的问题,选择在中国东部陆相含油气盆地中具有典型意义的渤海湾盆地牛庄洼陷,利用成藏组合统计法进行了资源量计算。该方法首先要对研究区内已探明的石油地质储量的来源构成和分布规律进行研究,通过油气运移方向和路径的分析,明确成烃与成藏的关系,结合构造、地层、沉积和温度压力环境确定总油气系统的边界;随后,在此基础上进一步划分成藏组合评价单元,在相同的成藏组合评价单元内利用统计法进行资源量计算。与以往的资源量评价方法相比,该方法由于充分的利用了成熟探区丰富的地质资料,即避免了成因法中可操作性较差的运聚系数的选取,又弥补了统计法中缺少地质分析的薄弱性,同时该方法能够进一步指出剩余资源在每个成藏组合内的差异,可为老油区的精细勘探提供依据。
According to national demand of petroleum resource potential understanding in the eastern mature region,the applicability and confines of evaluation methods were analyzed.These methods include genetic method,statistical method,and analogy method.In allusion to problems of petroleum resource evaluation methods at home and abroad,we choose the Niuzhuang Sag as a representative region in the continental petroliferous basin of east China to calculate the petroleum resource quantity by using the play statistical method.Firstly,the source feature and distribution regularity of proved oil reserves in the study area was investigated,and then the relationship between hydrocarbon generation and reservoir formation was defined by analyzing the migration direction and path of petroleum.Finally,in combination with structure,stratum, sediment,and temperature-pressure conditions,the boundary of total petroleum system was divided.On the basis of research results above,the evaluation unit of reservoir combination was divided and the resource quantity was calculated by statistical method in the similar evaluation unit.In contrast to conventional petroleum resource evaluation method,this method,taking advantage of various geology materials of mature exploration area,can not only avoid choice of migration and accumulation coefficient which is difficult to control in genetic method,but also compensate the shortage of geology materials in statistical method.Furthermore,it can point out the difference of remaining resources in each reservoir combination,and provide the evidence for fine exploration in mature exploration area.
出处
《天然气地球科学》
EI
CAS
CSCD
北大核心
2014年第4期477-489,共13页
Natural Gas Geoscience
基金
国家自然科学基金项目(编号:41072096
41372129)
国家科技重大专项"渤海湾盆地油气资源潜力再认识"(编号:2011ZX05006-001)联合资助
关键词
成熟探区
资源评价
成藏组合
统计法
成因法
评价单元
Mature exploration area
Resource evaluation
Reservoir combination
Statistical method
Genetic method
Evaluation unit
