渤海B油田边水对注水井调剖调驱效果的影响研究  

Study on the Influence of Side Water in Bohai B Oilfield on Profile Control and Flooding Effects of Water Injection Wells

作　　者：吴雅丽 敖文君 张宁 侯岳 阚亮 王成胜 田津杰 Wu Yali;Ao Wenjun;Zhang Ning;Hou Yue;Kan Liang;Wang Chengsheng;Tian Jinjie(CNOOC Enertech-Drilling & Production Co., Tianjin 300452, China;Tianjin Branch, CNOOC (China) Ltd., Tianjin 300452, China)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津300452 [2]中海石油(中国)有限公司天津分公司,天津300452

出　　处：《非常规油气》2020年第3期55-59,共5页Unconventional Oil & Gas

基　　金：“十三五”国家科技重大专项“大型油气田及煤层气开发渤海油田高效开发示范工程”(2016ZX05058003001)资助。

摘　　要：渤海B油田非均质性强,油田各井组存在不同程度的边底水,采用水平井开发时,见水后突进严重,含水上升较快,严重影响了开采效果,为了进一步确定边水对注水井调剖调驱效果的影响,利用数值模拟技术与理论分析方法,根据目标油田的油藏特征,采用定井底压力生产的方式,对比分析了水体倍数对含水率、含油饱和度、波及面积、产油及调剖稳油控水效果的影响。结果表明在开发过程中,无底水时,注水立即从优势通道突进,注水波及面积主要在优势通道附近,产油量低,开采效果很差;有底水时,水体倍数在10倍以下,累积产油量逐渐增加,但增加幅度变化较小;水体倍数超过10倍后,累积产油增加幅度增大。对于边水油藏,调剖后,水体倍数小于6倍时,随着水体倍数的增加,调剖增油幅度大幅下降;水体倍数超过6倍后,调剖增油下降幅度不明显。适合渤海B油田实施调剖调驱的水体倍数应控制在6倍以下,可以保证调剖调驱过程受水体影响较小,同时稳油控水效果明显。通过研究边水对注水井调剖调驱的效果,为渤海高含水油田的稳油控水措施提供了一定的理论指导。The reservoir of Bohai B oilfield has strong heterogeneity,and various well groups in the oilfield have different degrees of edge and bottom water.When using horizontal well development,when the production well sees water,the water intrusion is serious and the water content rises rapidly,which seriously affects the oil production effect.In order to further determine the effect of edge water on the profile injection and flooding effects of water injection wells,based on the reservoir characteristics of B oilfield,and using numerical simulation technology,the method of producing bottom-hole pressure is used to compare and analyze the effects of multiples of water body on water cut,oil saturation,spread area,oil production,and profile stabilization and water control effects.The results show that when the profile is not adjusted,with the increase of the water body multiple,the oil production of the oil well rises rapidly,and the formation energy is effectively supplemented by the side water.During profile adjustment,with the increase of the water body multiple,the effect of profile adjustment to reduce the water content gradually becomes worse.Although the cumulative oil production has increased significantly,the profile increase has decreased significantly.When conducting on-site profile adjustment and flooding,the water body multiple should be controlled below 6 times.

关 键 词：边水油藏 数值模拟 含水率 调剖 水体倍数 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]