摘要
根据F147区块低渗透薄互层油藏的地质特征,利用数值模拟与油藏工程方法,研究了水平井与直井联合布井井网方位、井网类型和井距排距对开发效果的影响。结果表明:该块压裂水平井与直井联合布井井网方位应以水平井位置平行于最小地应力方向为最优;井网类型应选择反九点井网;考虑启动压力梯度下F147区块极限供油半径为110 m;井网井距应该选择400 m×200 m(井距×排距)为最优。该研究对于提高压裂水平井开发此类油藏的开发效果具有重要的参考价值。
The impacts of well pattern azimuth,types,well spacing and array on development response as well as the placement of horizontal and vertical wells are studied by using numerical simulation and reservoir engineering methods according to the geological characteristics of the thin interbedded and low permeability reservoirs in F147 block.The result shows that in the combined pattern of hydraulically fractured horizontal well and vertical well,the azimuth of the horizontal well is optimum in parallel to the smallest terrestrial stress;inverted nine-spot pattern shall be adopted;the limit drainage radius for F147 reservoir is 110m with consideration of threshold pressure gradient;the optimum well pattern and spacing is 400 m × 200 m(well spacing × array spacing).This study is of important reference value to the recovery from hydraulically fractured horizontal wells in similar reservoirs.
出处
《特种油气藏》
CAS
CSCD
2010年第4期72-74,共3页
Special Oil & Gas Reservoirs
基金
国家科技重大专项"大型油气田及煤层气开发"项目13课题五"低渗透油藏中高含水期综合调整技术"(2008ZX05013-005)
关键词
低渗透油藏
薄互层
压裂水平井
井网优化
正交分析
low permeability reservoir
thin interbed
hydraulically fractured horizontal wells
well pattern optimization
quadrature analysis
