地震属性在塔河油田碳酸盐岩缝洞型油藏连通性分析及其注水开发中的应用
|
摘要
由于塔河油田碳酸盐岩缝洞型油藏具有极强的非均质性,实施多井缝洞单元注水开发过程中存在对井间连通性认识不清的问题,极大地影响了注水开发的效果。通过对判识碳酸盐岩缝洞型油藏连通性的地震属性进行优选,确定的最大曲率属性在反映碳酸盐岩缝洞型油藏微断裂和裂缝的发育程度、描述垂向上的非连续性以及表征裂缝的线型特征等方面均优于相干和地震倾角属性。因此,利用最大曲率属性识别和描述微断裂—裂缝体系,追踪大尺度裂缝的延伸方向,并结合振幅梯度属性,刻画缝洞连通体的空间形态。在碳酸盐岩缝洞型油藏多井缝洞单元注水开发过程中,最大曲率属性可以清晰地反映微断裂—裂缝体系的空间分布,确定其与溶洞的空间组合关系,为井间静态连通性的判定提供依据;利用多种地震属性刻画的缝洞连通体,可以指导注采井部署和优化注采关系;根据追踪的大尺度裂缝连通的主方向,可以预测注水受效方向。
Due to the strong heterogeneity of Tahe oilfield fracture-vug carbonate reservoir, there exists some factors greatly influencing the effect of the unit waterflooding development, such as the fuzzy understanding of fracture-cave body distribution between wells and large scale fracture channel connectivity in injection layers. Through a comparative analysis of the characteristics of seismic curvature, using the seismic reflection angle, discontinuity and maximum curvature attributes, the seismic facies, images' micro fracture-fracture system were analyzed. The fissure-cave connected spatial form was depicted. The extending direction of the large scale fracture was tracked. When waterflood is performed in the fracture-vug reservoir, the depicted fracture-cave connectivity distribution can guide the deployment of the injection and production wells and optimize their relationship; based on tracking the trend of large-scale crack, the main direction of waterflooding can be predicted. Through the application in the field, the geological basis for fracture-vug reservoir in injection and production wells can be provided and their deployment can be optimized. The establishment of the network of injection and production wells and prediction of effective direction of water injection can be realized.
Due to the strong heterogeneity of Tahe oilfield fracture-vug carbonate reservoir, there exists some factors greatly influencing the effect of the unit waterflooding development, such as the fuzzy understanding of fracture-cave body distribution between wells and large scale fracture channel connectivity in injection layers. Through a comparative analysis of the characteristics of seismic curvature, using the seismic reflection angle, discontinuity and maximum curvature attributes, the seismic facies, images' micro fracture-fracture system were analyzed. The fissure-cave connected spatial form was depicted. The extending direction of the large scale fracture was tracked. When waterflood is performed in the fracture-vug reservoir, the depicted fracture-cave connectivity distribution can guide the deployment of the injection and production wells and optimize their relationship; based on tracking the trend of large-scale crack, the main direction of waterflooding can be predicted. Through the application in the field, the geological basis for fracture-vug reservoir in injection and production wells can be provided and their deployment can be optimized. The establishment of the network of injection and production wells and prediction of effective direction of water injection can be realized.
引文
[1]张希明,杨坚.塔河缝洞型碳酸盐岩油藏描述及储量评估技术[J].石油学报,2004,25(1)13-18.
[2]鲁新便.缝洞型碳酸盐岩油藏古岩溶系统与油气开发[J].石油与天然气地质,2010,31(1):22-27.
[3]丁勇,彭守涛,李会军.塔河油田及塔北碳酸盐岩油藏特征与成藏主控因素[J].石油实验地质,2011,33(5):488-494.
[4]彭守涛,何治亮,丁勇,等.塔河油田托甫台地区奥陶系一间房组碳酸盐岩储层特征及主控因素[J].石油实验地质,2010,32(2):108-114.
[5]Al-Dossary S,Marfurt K J.3D volumetric multispectral estimates of reflector curvature and rotation[J].Geophysics,2006,71(5):41-51.
[6]Roberts A.Curvature attributes and their application to 3D interpreted horizons[J].First Break,2001,19(2):85-100.
[7]倪新锋,王招明,杨海军,等.塔北地区奥陶系碳酸盐岩储层岩溶作用[J].油气地质与采收率,2010,17(5):11-16.
[8]李宗宇.塔河缝洞型碳酸盐岩油藏油井见水特征浅析[J].特种油气藏,2008,15(6):52-55.
[9]刘中春.塔河油田缝洞型碳酸盐岩油藏提高采收率技术途径[J].油气地质与采收率,2012,19(6):66-68,86.
[10]荣元帅,李新华,刘学利,等.塔河油田碳酸盐岩缝洞型油藏多井缝洞单元注水开发模式[J].油气地质与采收率,2013,20(2):58-61.
[2]鲁新便.缝洞型碳酸盐岩油藏古岩溶系统与油气开发[J].石油与天然气地质,2010,31(1):22-27.
[3]丁勇,彭守涛,李会军.塔河油田及塔北碳酸盐岩油藏特征与成藏主控因素[J].石油实验地质,2011,33(5):488-494.
[4]彭守涛,何治亮,丁勇,等.塔河油田托甫台地区奥陶系一间房组碳酸盐岩储层特征及主控因素[J].石油实验地质,2010,32(2):108-114.
[5]Al-Dossary S,Marfurt K J.3D volumetric multispectral estimates of reflector curvature and rotation[J].Geophysics,2006,71(5):41-51.
[6]Roberts A.Curvature attributes and their application to 3D interpreted horizons[J].First Break,2001,19(2):85-100.
[7]倪新锋,王招明,杨海军,等.塔北地区奥陶系碳酸盐岩储层岩溶作用[J].油气地质与采收率,2010,17(5):11-16.
[8]李宗宇.塔河缝洞型碳酸盐岩油藏油井见水特征浅析[J].特种油气藏,2008,15(6):52-55.
[9]刘中春.塔河油田缝洞型碳酸盐岩油藏提高采收率技术途径[J].油气地质与采收率,2012,19(6):66-68,86.
[10]荣元帅,李新华,刘学利,等.塔河油田碳酸盐岩缝洞型油藏多井缝洞单元注水开发模式[J].油气地质与采收率,2013,20(2):58-61.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心