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姚店油田位于陕北斜坡构造带东南部,1985年投入开发,自1988年至今已累计上报探明含油面积109.20km~2,石油地质储量5573.00×104t。无论在勘探阶段还是在开发阶段,在寻找非构造隐蔽油气藏(鄂尔多斯盆地延长组低孔低渗储层大多属于该类油气藏)时,沉积微相及其沉积环境的研究就显得尤为重要。针对这些问题,完善沉积微相判别技术,提高了测井资料的解释效果,建立起一套实用的、精细的、可持续更新的、符合开发现状的测井沉积微相解释方案,为制定老油田的开发调整方案奠定必要的地质基础。
Yaodian Oilfield is located in the southeastern part of the northern Shaanxi slope structural zone and was put into operation in 1985. Since 1988, it has reported a total of 109.20km ~ 2 proven oil area and 5573.00 × 104t petroleum reserves. It is very important to study the sedimentary microfacies and its depositional environment in the search for non-structural subtle reservoirs (the low-porosity and low-permeability reservoirs of the Yanchang Formation in the Ordos Basin belong to this type of reservoirs) in both the exploration and development stages. In response to these problems, the technique of discriminating sedimentary microfacies is improved and the interpreting effects of well logging data are improved. A set of practical, fine, sustainable and updated logging interpretation microfacies interpretation scheme in line with the development status is established. Oilfield development and adjustment program laid the necessary geological foundation.