水平井蒸汽驱开采稠油井网优化研究要点.doc

水平井蒸汽驱开采稠油井网优化研究张艳玉 1 ,徐岩光 1 ,李洪君 2 ,朱贵友 1 (1 .中国石油大学(华东) 石油工程学院,山东青岛 266555 ; 2. 中国石油天然气勘探开发公司,北京 100034 ) 摘要为提高胜利油田某区块蒸汽吞吐后转蒸汽驱的采收率,利用数值模拟方法对其进行了水平井直井联合井网优化研究。以 10 种井网为研究对象, 分别进行了累积采油量、汽油比、采收率的计算和对比, 并对各种井网进行了经济评价, 筛选出了经济效益最好的井网。对于该区块, 将角井改成水平井的九点井网开发效果最好, 经济效益最高, 且易于进行井网调整, 但施工难度相对较大。研究结果表明, 水平井与直井联合井网蒸汽驱开采稠油效果明显好于直井,水平井蒸汽驱作为蒸汽吞吐的接替技术,可以获得较好的开采效果及经济效益。关键字水平井;蒸汽驱;井网;数值模拟 Optimization R esearch OnH orizontal W ellP attern for S team F looding H eavy O il Zhang Yan-yu 1, Xu Yan-guang 1 ,Li Hong-jun 2 ,Zhu Gui-you 1 ( of Petroleum Engineering (East China), China University of Petroleum, Qingdao , Shandong , 266555; National Oil and Gas Exploration and Development Corporation ( CNODC ), Beijing, 100034) Abstract: To enhance the conversion recovery from steam stimulation to flooding of a block in Shengli Oilfield, the o ptimization study bined pattern of vertical and horizontal wells is carried out by using numerical simulation . Based on10 well patterns ,the results of cumulative oil production, steam/oil ratio and recovery ratio are calculated pared ,the economic evaluations for all patterns are given , and the best cost-effective pattern is screened out. For this block, the nine-spot pattern whose a ngle wells are changed into the horizontal wells is the best and most cost-effective , eas ier to adjust the pattern but harder to achieve . The results show that