吴仓堡油区长10油气成藏规律与勘探开发前景
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摘要
吴起吴仓堡油区位于鄂尔多斯盆地中央拗陷区,地层埋藏普遍较深,对延长组底部深层长10油层勘探开发和研究程度较低。近三年来通过含油气系统研究,发现了长10油层吴起三角洲朵叶体,认为是整个鄂尔多斯盆地长10油层储量规模最大的区块,勘探开发前景十分广阔。因此,在区域地质成藏理论指导下,通过区域评价、目标优选和评价部署,发现了长10油层一批具有一定储量规模的油藏。对已发现油藏从地层、构造、沉积、储层、流体及试油、试采综合评价认为吴起长10油层三角洲朵叶体紧邻生油凹陷、物性较好、无边底水、油层区域连片分布、规模大,有望发现一批具有重要影响的优质储量,为今后延长石油和吴起采油厂增储上产具有重要的意义。
Wuqi Wucanpu oil area is located in the central depression of Ordos basin. The strata are generally buried deeply, and the exploration, development and research degrees of Chang10 oil layer in the deep bottom of Yanchang formation are low. In the past three years, through the study of oil-bearing system, we found the leaf body in Wuqi delta of Chang10 oil reservoir, which was considered to be the block with the largest reserves of Chang10 oil reservoir in Ordos basin. Therefore, under the guidance of the theory of regional geological reservoir formation, through regional evaluation, target optimization and evaluation deployment, a group of reservoirs with a certain reserve size were found in the Chang 10 oil reservoir. It was pointed that Wuqi Chang10 reservoir delta lobes are adjacent to oil-generating sag, have better properties, dimensionless bottom water, large scale, so it is expected to find a group of high quality reserves.
Wuqi Wucanpu oil area is located in the central depression of Ordos basin. The strata are generally buried deeply, and the exploration, development and research degrees of Chang10 oil layer in the deep bottom of Yanchang formation are low. In the past three years, through the study of oil-bearing system, we found the leaf body in Wuqi delta of Chang10 oil reservoir, which was considered to be the block with the largest reserves of Chang10 oil reservoir in Ordos basin. Therefore, under the guidance of the theory of regional geological reservoir formation, through regional evaluation, target optimization and evaluation deployment, a group of reservoirs with a certain reserve size were found in the Chang 10 oil reservoir. It was pointed that Wuqi Chang10 reservoir delta lobes are adjacent to oil-generating sag, have better properties, dimensionless bottom water, large scale, so it is expected to find a group of high quality reserves.
引文
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[3]杨俊杰.鄂尔多斯盆地构造演化与油气分布规律[M].北京:石油工业出版社,2000.
[4]赵靖舟,武富礼,闫世可,等.陕北斜坡东部三叠系油气富集规律新认识[J].石油学报,2006,27(5):24-27.
[5]李琳,郭宝杉.安塞油田长10油藏储层评价[J].中国石油和化工标准与质量,2015(9):155.
[6]何右安,李涛,何小娟,等.安塞油田长10油藏注气开发方式研究[J].石油天然气学报,2012,34(9):121-124.