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松南大情字井青三段地层沉积时期处于三角洲前缘相带,受不同物源、断层及构造背景的影响,同一时期沉积的地层岩性、岩相横向变化快,厚度变化较大,大区域地层对比困难。受井控程度限制,勘探与开发在细分层标志方面存在差异,导致地层划分深度误差较大,给勘探开发一体化科研生产带来了影响。本文通过对青三段地层划分标志重新梳理和确定,采用格架地层骨干剖面逐级闭合和井-震标定控制对比技术,较好地解决了勘探与开发分层不统一问题,为系统开展青三段高台子油层区域沉积、成藏研究奠定了基础。
During the sedimentary period of the Songliao Daqing character well, the third member of the Qinghai-Tibet Plateau is located in the delta front facies. Due to different provenance, fault and tectonic setting, the stratigraphic lithology and lithofacies deposited in the same period changed rapidly and changed greatly in thickness. Regional strata contrast difficult. Due to the limitation of well control, there are differences in subdivision marks between exploration and development, resulting in large depth error of stratigraphic division, which has an impact on the integrated research and production of exploration and development. In this paper, we re-sort and determine the division marks of the Qing 3 member stratum. By adopting the step-by-step closure of the skeleton stratum and the comparative control of well-vibration calibration, the problem of non-uniform exploration and development stratification is well solved. Three sections of Gaotaizi reservoir deposition, accumulation of reservoir research laid the foundation.