摘要
断控缝洞型碳酸盐岩油藏缝洞结构和连通关系复杂,传统井网部署易产生低产能井,需构建立体注采井网以提高产能。通过油藏数值模拟研究了不同因素对塔里木富满油田满深3和满深4井区立体注采井网波及系数的影响,并设计了先导试验方案预测产能。结果表明,满深3井区注气井与采油井单个交错排状分布时波及系数最大;采油井纵向深度越大,波及系数越大;平面注采井距在500~1000m波及系数相对稳定,井距增至1500m时,波及系数大幅度减小。满深4井区注气井、注水井与采油井单个交错排状分布时波及系数最大。先导试验中,满深3和满深4井区分别采取“浅部注N_(2),深部采油”和“顶部注N_(2),底部注水,中部采油”的井网构建方案,阶段末采出程度分别达到21.3%与22.4%,相比于基础衰竭式开发和注水开发方案有了显著提升。
The fracture-vuggy structure and connection relationship of fault-controlled fracture-vuggy carbonate reservoirs are complex,and traditional well pattern deployment is prone to produce low-productivity wells.A three-dimensional injection and production well pattern needs to be constructed to increase productivity.The influence of different factors on the sweep coefficient of the three-dimensional injection and production well pattern in the Manshen 3 and Manshen 4 well areas of the Tarim Fuman Oilfield was studied through reservoir numerical simulation,and a pilot test plan was designed to predict productivity.The results show that the sweep coefficient is the largest when the gas injection wells and production wells are arranged in a single staggered manner in the Manshen 3 well area;the greater the depth of the production wells,the greater the sweep coefficient;the sweep coefficient is stable within the range of 500~1000 m between injection and production wells,and decreases significantly when the distance increases to 1500 m.The sweep coefficient is the largest when gas injection wells,water injection wells and production wells are arranged in a single staggered manner in the Manshen 4 well area.In the pilot test,the plans of“N_(2) injection in the shallow part and production in the deep part”and“N_(2) injection in the top part,water injection in the bottom part,and production in the middle part”are adopted in the Manshen 3 and Manshen 4 well areas respectively.The recovery rates at the end of the stage reach 21.3%and 22.4%respectively,which is a significant improvement compared to the basic depletion development and water injection development plans.
作者
邓兴梁
张仕帆
汪鹏
王彭
张杰
DENG Xingliang;ZHANG Shifan;WANG Peng;WANG Peng;ZHANG Jie(Research Institution of Petroleum Exploration and Development,Tarim Oilfield Company,PetroChina,Korla,Xinjiang 841000,China;R&D Center for Ultra-deep Complex Reservoir Exploration and Development,CNPC,Korla,Xinjiang 841000,China;School of Future Technology,China University of Geosciences,Wuhan,Hubei 430074,China)
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2024年第4期74-84,共11页
Journal of Southwest Petroleum University(Science & Technology Edition)
基金
中国石油重大科技专项(2023ZZ16YJ02)。
关键词
富满油田
断控缝洞型油藏
碳酸盐岩
立体注采井网
井网构建
波及系数
Fuman Oilfield
fault-controlled fractured-vuggy reservoir
carbonate rock
three-dimensional injection and production well pattern
well pattern construction
sweep coefficient
