吴起采油厂袁和庄区注水开发效果评价

发布时间：2018-10-21 08:49

【摘要】：袁和庄油田延长组长6油藏是的一个具有低孔、低渗特点的新油藏,该类油藏具有能量传导能力较弱、压力敏感性较强、原油流动具有启动压力梯度等特征。低孔低渗油田在生产过程中地层压力、孔隙度及渗透率迅速下降,油层产能难以恢复。这些特征制约着低渗透油田的开发效果。为了克服这些特征带来的不利影响,可以采取注水开发方式来保持地层压力,改善低渗透油田开发效果。本次在充分调研国内外注水开发研究现状的基础上,考虑到袁和庄油田实际情况,首先,开展研究区地质特征研究,对研究区油砂体进行综合评价;依次开展了研究区油藏开发动态特征评价、油藏水驱动用状况分析、袁和庄全区水淹状况分析。在油藏开发动态特征分析、油藏分层动用状况分析前提下,选取注采速度、水驱采收率、水驱储量动用程度、水驱指数、综合递减率、自然递减率、存水率等注水开发效果评价类指标对研究区进行注水开发效果进行综合评价,进而得到了油藏注水开发目前存在的主要问题和矛盾,为综合治理对策的研究指明了调整的方向;最后,分析了研究区的目前开发形式,论证了层系组合界限,给出了综合治理对策的调整建议,并对综合治理效果进行了预测。
[Abstract]:Yanchang No. 6 reservoir in Yuanhezhuang Oilfield is a new reservoir with low porosity and low permeability. This kind of reservoir has the characteristics of weak energy conductivity, strong pressure sensitivity, and crude oil flow with starting pressure gradient. The formation pressure, porosity and permeability of low porosity and permeability oil fields decrease rapidly during production, and the productivity of reservoir is difficult to recover. These characteristics restrict the development effect of low permeability oil field. In order to overcome the adverse effects brought by these characteristics, water injection development can be adopted to maintain formation pressure and improve the development effect of low permeability oil fields. On the basis of investigating the present situation of water injection development at home and abroad and considering the actual situation of Yuanhezhuang Oilfield, the geological characteristics of the study area are studied, and the comprehensive evaluation of the oil sand body in the study area is carried out. In turn, the evaluation of reservoir development performance, the analysis of reservoir water driving condition and the analysis of water flooding in Yuanhezhuang area are carried out in turn. Based on the analysis of reservoir development dynamic characteristics and reservoir stratified production situation, the injection and production rate, water drive recovery factor, water drive reserve production degree, water drive index, comprehensive decline rate and natural decline rate are selected. The evaluation index of waterflooding development effect, such as water storage rate, has comprehensively evaluated the waterflooding development effect in the study area, and then obtained the main problems and contradictions existing in reservoir waterflooding development at present, and pointed out the adjustment direction for the study of comprehensive control countermeasures. Finally, the paper analyzes the current development form of the research area, demonstrates the boundary of the combination of the layers, gives the adjustment suggestions of the comprehensive management countermeasures, and forecasts the effect of the comprehensive management.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE357.6

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