【作者】 芮拥军；

【导师】 冯其红； 王秀玲；

【作者基本信息】 中国石油大学 ， 石油与天然气工程， 2007， 硕士

【摘要】 准噶尔盆地车排子地区排2砂体位于准噶尔盆地西部隆起车排子凸起东部2号构造,含油面积15.4km2,石油地质储量800×104t,储层为三角洲砂体经过湖浪的再搬运和再沉积形成的滩坝砂,通过砂层对比和岩心分析,该区存在排2砂体和排206-x15砂体两套油层,属中浅层、中丰度、高产能、轻质原油储量,其储层物性特征为特高孔、特高渗,但也具有强水敏、强亲水的特点,地层易受到伤害,从而影响了最终采收率。本文根据现有资料,首先进行油藏构造研究、储层对比及分布预测、测井精细解释及储层参数计算等研究工作,认为排2砂体均质程度为较均匀,平面连通性好,但弹性产率较低,天然能量不足,自然产能效果差,存在油层能量严重不足,需要补充能量开发。在此认识的基础上,通过开采方式、开发层系划分、开发井网和井距、单井日产能力、采收率预测等研究,确立了边外注水+断层东油井抽稀,断层西少部署一排油井的开发方案,利用数值模拟方法,预测采收率为55%,完成油藏开发方案的设计,为该区下一步开发提供了有力依据。更多还原

【Abstract】 Well Pai-2 is located on the east No. 2 structure of Chepaizi raise on west uplift, Zhunga-er Baisin. The acreage of the oil field is 15.4km2 with hydrocarbon reserves of 800×104t. The main reservoirs are the beach and bar sand bodies formed by redistribution of the delta sediments. By strata contrast and core analysis, it is considered that two sets of oil-bearing sand bodies: Pai 2 and Pai 206-x15 are existed in this area, and their have middle-shallow burying depth, mid abundance and high productivity, belongs to low density rude oil. The reservoirs are characterized by super-high porosity and permeability, but also sensitive and conversant to water. So the reservoirs are easily to be damaged and consequently affected the final recovery efficiency.Based on the available data, reservoir structure research, reservoir comparison and distribution prediction, fine logging interpretation and reservoir parameter calculation were achieved, and it can be considered that the physical properties of the Pai-2 sand-body is well-proportioned and well-connected on the plane, but its productivity is not stretchable and the natural energy is deficient. Based on these recognitions, by the analysis of production method, development formation division, development well grid and well spacing, single well daily rate and recovery efficiency prediction, etc, a development plan was brought to effect: it is all around affusion and made the oil-well of east fault sparse, and predicted the recovery efficiency of 55%, provide a sound foundation for the future development in the area.更多还原