摘要
为了解决鄂尔多斯盆地杭锦旗地区北部上古生界地层构造复杂,砂体横向变化较快,圈闭难以识别的问题,以杭锦旗地区呼吉太三维区为研究对象,针对下二叠统下石盒子组盒2+3段砂体厚度薄、储层非均质性较强、局部圈闭受微幅构造和微断裂共同影响等问题,通过地震属性优选和分析,结合构造精细解释成果,对区内盒2+3段的圈闭进行识别和评价。研究结果表明:利用地震属性分析与构造精细解释相结合,可有效识别盒2+3段岩性圈闭和岩性—构造复合圈闭,并根据圈闭的储层有效性和封堵性,将其分为3类,其中Ⅰ类圈闭是下一步首选勘探目标。
The Upper Paleozoic in the north of Hangjinqi area is structurally complex,its sand bodies change fast laterally and traps can be hardly identified.In regard of this,the Hujitai three-dimensional zone in Hangjinqi area was taken as the research object.The sand bodies of He 2+3 Member are thin,the reservoirs are of stronger heterogeneity and traps are locally under the joint effect of small-amplitude structures and microfaults.To deal with these problems,seismic attribute optimization and analysis was combined with the fine structure interpretation results to identify and analyze the traps of He 2+3 Member in this area.It is indicated that lithologic traps and lithologic-structural complex traps of He 2+3 Member can be identified effectively by combining the seismic attribute analysis and the fine structure interpretation.And the traps are classified into three types based on their reservoir validity and sealing characteristics.And Type I trap is the preferred exploration target in the next step.
出处
《天然气技术与经济》
2019年第2期11-15,79,共6页
Natural Gas Technology and Economy
基金
国家科技重大专项"鄂尔多斯盆地北缘低丰度致密低渗气藏开发关键技术"项目(编号:2016ZX05048-002)
