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超稠油油藏蒸汽氮气辅助重力泄油注氮优化计算

发表时间:2016-06-30  浏览量:1582  下载量:747
全部作者: 庞占喜,吕晓聪
作者单位: 中国石油大学(北京)石油工程学院
摘 要: 双水平井蒸汽辅助重力泄油技术在超稠油油藏开发中显示出独特的优势。根据一维稳定传热理论建立了超稠油蒸汽氮气辅助重力泄油所需氮气隔热层的最优厚度计算公式;并在考虑氮气在稠油中的溶解作用时,利用蒸汽辅助重力泄油理论建立了蒸汽氮气混注时氮气注入速度的计算公式。针对我国辽河油田曙一区杜84块超稠油油藏存在顶水层的情况,实施双水平井蒸汽氮气辅助重力泄油措施,其所需的最小氮气隔热层厚度为12.06 m,预注氮气体积为47.86万m3,蒸汽氮气混注时的氮气注入速度为5 957.06(标)m3/d.
关 键 词: 油气田开发工程;重力泄油;最优厚度;注氮速度;蒸汽腔;物质平衡
Title: Optimization calculation of injecting nitrogen for steamnitrogen assisted gravity drainage in super-heavy oil reservoirs
Author: PANG Zhanxi, LÜ Xiaocong
Organization: College of Petroleum Engineering, China University of Petroleum, Beijing
Abstract: The technology of steam assisted gravity drainage to parallel horizontal wells in developing super-heavy oil reservoirs shows that the unique advantage. Based on one dimensional steady heat transfer theory, the formula of optimum thickness of nitrogen insulation layer is deduced. The injecting nitrogen rate of steam and nitrogen injected together is obtained on considering nitrogen dissolution into heavy oil by the theory of steam-nitrogen assisted gravity drainage. Aimed at the Block of Du84 with top water layer in Liaohe oil field, the optimum injection nitrogen of steam-nitrogen assisted gravity drainage are that the minimum thickness of nitrogen layer is 12.06 m, pre-nitrogen injection volume is 4.786×105 m3 under standard state, the injection rate of nitrogen is 5 957.06 m3/d under standard state when steam and nitrogen are injected into reservoirs together.
Key words: oil-gas field development engineering; super-heavy oil reservoirs; optimum thickness; injecting rate; steam chamber; material balance
发表期数: 2016年6月第12期
引用格式: 庞占喜,吕晓聪. 超稠油油藏蒸汽氮气辅助重力泄油注氮优化计算[J]. 中国科技论文在线精品论文,2016,9(12):1275-1280.
 
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