昆北油田优势通道成因及识别方法  

Genesis and Identification of Dominant Channel in Kunbei Oilfield

作　　者：胡亚斐[1] 吴峙颖[2] 李佳鸿[1] 刘岩 谢琳 Hu Yafei;Wu Shiying;Li Jiahongl;Liu Yan;Xie Lin(PetroChina Research Institute of Petroleum Exploration and Development,Beijing 100083;Sinopec Research Institute of Petroleum Engineering,Beijing 100101,China;PetroChina Huabei Oilfield Company,Renqiu,Hebei 062552,China;PetroChina Qinghai Oilfield Company,Dunhuang,Gansu 736200,China)

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]中国石化石油工程技术研究院,北京100101 [3]中国石油华北油田分公司,河北任丘062552 [4]中国石油青海油田分公司,甘肃敦煌736200

出　　处：《特种油气藏》2018年第3期122-125,共4页Special Oil & Gas Reservoirs

摘　　要：针对低渗透砂砾岩储层中油井含水高、动用程度低、优势通道发育等问题，运用地层沉积学、岩心分析、动静态资料等方法得到优势通道的形成原因。通过优选动静态参数，利用灰色理论和模糊数学方法，建立了优势通道的模糊综合评判模型。研究结果表明：在冲积扇沉积的低渗透砂砾岩储层中，优势通道的形成主要受沉积相、储层改造及注水冲刷的影响。模糊综合评判模型可以实时对储层优势通道进行定量评价。将研究成果应用于昆北油田切12区块14口水井，计算结果与示踪剂的解释结果符合率达到86％。研究成果对水驱油田调整开发对策有重要的指导意义。In view of the high water-cut of oil production well, low producing-level, development of dominant channel and other challenges in tbe low-permeability glutenite reservoir, the genesis of dominant channel is investi- gated by using stratigraphic sedimentology, core lest, static and dynamic data. Grey theory and fuzzy mathematics are used to establish the comprehensive fuzzy evaluation model for dominant channel by optimizing static and dy- namic parameters. Research indicates that the development of dominant channel is mainly affected by the sedimenta- ry facies, reservoir stimulation and injection water flushing in the low-prmeability glutenite reservoir with alluvial fan deposition. This comprehensive fuzzy evaluation model could quantitatively evaluate the dominant reservoir chan- nels in time. After application to 14 water injection wells in the Block Qie 12 of Kunbei Oilfield, the agreement rate is up to 86% between prediction and the tracer interpretation. This research could provide certain guidance for the development adjustment of waterflooding oilfields.

关 键 词：优势通道 砂砾岩 灰色理论 模糊数学 昆北油田 

分 类 号：TE341[石油与天然气工程—油气田开发工程]