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地层的精细划分与对比是油气勘探研究的基础工作,地层划分的好坏直接影响着油气勘探后续的研究。在收集大量的地质资料基础上,以鄂尔多斯盆地姬塬油田主要生油层——延长组长2油层组为研究目的,在全区内寻找分布比较稳定的主要标志层K9和长2底砂岩以及K7辅助标志层,将延长组长2油层组地层划分为3个小层。本研究为该地区的开发提供可靠的依据,并为下一步大规模开发建产作好了技术储备。
The fine division and contrast of strata are the basic work of oil and gas exploration and research. The stratigraphic division has a direct impact on the follow-up research of oil and gas exploration. On the basis of a large amount of geological data collected, aiming to study the Chang 2 reservoir of Yanchang Formation, the main oil reservoir in the Jiyuan Oilfield in the Ordos Basin, it is found that K9 and K7, the major marker beds with relatively stable distribution in the whole area, Auxiliary marker layer, the extension of Group 2 oil layer formation is divided into three small layers. This study provides a reliable basis for the development of the region and reserves the technical reserves for the next large-scale development and construction.