低渗透率油藏水平井经济极限研究  

Study on economic limits for horizontal well in low-permeability reservoir

作　　者：李彦兴[1,2] 韩令春[2] 董平川[3] 韩德金[2] 

机构地区：[1]中国科学院渗流流体力学研究所,河北廊坊065007 [2]大庆油田有限责任公司,黑龙江大庆163712 [3]中国石油大学石油工程教育部重点实验室,北京102249

出　　处：《石油学报》2009年第2期242-246,共5页Acta Petrolei Sinica

基　　金：国家自然科学基金项目(No.50574059和No.50004002)资助

摘　　要：根据低渗透率油藏水平井开发的矿场实际情况,通过引入相对渗透率曲线和物质平衡方程,提出了注采平衡条件下低渗透油藏水平井的产量递减模型,论证了低渗透油藏水平井产量变化规律。根据非线性盈亏平衡原理,推导出低渗透油藏水平井单井日产油量经济极限和地质储量经济极限的计算方程。在大庆外围油田扶杨油层进行的实际应用表明,该方程既可用于判别水平井开发的经济效益,又可用于水平井优化设计。On the basis of field development of horizontal wells in the low permeability reservoirs, the relative permeability curves and material balance principle, a model was proposed for describing the decline of oil production in horizontal wells under the condition of balanced injection. In the model, the productivity regulation of horizontal wells in low permeablility reservoir was obtained. According to nonlinear profit and loss principle, the equations were deduced for calculating the economic limitations of well production and OOIP of horizontal well in low-permeability reservoirs. An application example of Fuyang Reservoir in Daqing Oilfield showed that these equations could be used to evaluate the economic benefit of horizontal drilling process and make an optimum design for development of horizontal well in low-permeability reservoir.

关 键 词：低渗透率油藏 水平井 开发效益 产量递减模型 极限产量 经济评价 

分 类 号：TE112.23[石油与天然气工程—油气勘探]