断块区岩性油藏剩余油分布特征及挖潜方法--以松辽盆地葡北油田葡萄花油层为例  

Tapping potential method and characteristics of remaining oil distribution of lithologic reservoir in block area——as Putaohua reservoir of Pubei oilfield in Songliao basin

作　　者：刘宗堡[1] 杨铁军[2,3] 龚勋[1] 刘洪涛[4] 刘云燕[5] 

机构地区：[1]东北石油大学地球科学学院,黑龙江大庆163318 [2]中国地质大学(北京)能源学院,北京100083 [3]大庆榆树林油田开发有限责任公司,黑龙江大庆163000 [4]大庆油田有限责任公司第七采油厂,黑龙江大庆163517 [5]大庆油田有限责任公司第八采油厂,黑龙江大庆163514

出　　处：《东北石油大学学报》2013年第4期32-38,120,共8页Journal of Northeast Petroleum University

基　　金：黑龙江省教育厅科技项目(12521060)

摘　　要：受断层遮挡和断砂配置关系影响,断块区岩性油藏剩余油分布十分复杂.分析葡北油田葡萄花油层正向构造识别、沉积微相解剖、断层侧向封闭性和‘断—砂’匹配样式,认为断块区岩性油藏剩余油主要受"势—断—相"及其匹配关系控制,即断块边部正向断圈和内部微幅度构造高点控制剩余油富集部位;断层侧向封闭性影响剩余油富集程度;浅水三角洲水下分流河道及主体席状砂构成剩余油富集优质储层;断层与砂体匹配样式决定剩余油富集层位.建立4种剩余油类型,提出断块边部遮挡型剩余油钻大斜井,微幅度构造型剩余油钻高效加密直井,河道注采不完善型剩余油钻水平井,席状砂非均质性型剩余油采用油井压裂等挖潜方法.该研究结果对高含水期断块油田高效开发具有指导意义.The lithologic reservoir in fault block area is affected by fault and the configuration relationships of the fault and sand,so the remaining oil distribution is very complex.By the way of the recognition of the positive structure of Putaohua reservoir in Pubei oilfield.we come up with that the remaining oil distribution of lithologic reservoir in fault block area is mainly affected by positive structure,fault lateral sealing,sedimentary microfacies and the control of’break-sand’matching style,namely block edge positive fault trap and internal micro structure high control the residual oil enrichment places.The lateral sealing ability of fault effects the degree of enrichment of the remaining oil;Shallow water delta underwater distributary channel and main sand sheet constitute the unit of remaining oil reservoir;The fault and sandbody matching style decide the enrichment horizon of the remaining oil.On the basis of the above research we established 4 kind of remaining oil types:fault edge barrier,micro structure highs,the imperfect river channel injection-production and the heterogeneity of sand sheet,and puts forward drilling large slope wells for the block edge barrier type of remaining oil,efficient encryption vertical wells for micro structure type of remaining oil,horizontal wells for river the imperfect river channel injection-production type of remaining oil and crushing oil wells for the sheet sand heterogeneity type of remaining oil.The result is significant for the guidance of efficient development of high water cut block faulted oilfield.

关 键 词：断块区 岩性油藏 剩余油 分布特征 挖潜方法 葡萄花油层 葡北油田 松辽盆地 

分 类 号：TE55[石油与天然气工程—油气田开发工程]