基于构造应力场模拟的碳酸盐岩储层裂缝检测
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摘要
裂缝识别在碳酸盐岩储层研究中具有非常重要的现实意义。文章在探讨裂缝识别方法及构造应力场模拟原理的基础上,以珠江口盆地东沙隆起的流花11-1生物礁油田为靶区,通过叠前三维地震反演,得到空变的弹性参数,构建精细的非均质力学模型,密切结合应力场数值模拟技术和地震反演技术。与常规构造应力场模拟相比,叠前构造应力场模拟更加合理地考虑到叠前弹性参数,从而能更精确地进行碳酸盐岩储层构造裂缝的检测,有较好的应用效果。
It is important to identify fractures in carbonate reservoir.Based on the method to identify fracture and the mathematic principle of numerical simulation,the algorithm and process of fracture detection applied in pre-stack 3D seismic data were designed and realized using numerical simulation of tectonic stress field.For target areas in LH11-1 reef reservoir oilfield in the Dongsha Uplift,Pearl River Mouth Basin,the parameters of pre-stack 3D seismic inversion were closely combined with numerical simulation of tectonic stress field and seismic inversion to construct fine heterogeneous mechanical model.Because of the pre-stack elastic parameter was considered in heterogeneous model,so it is more reasonable and more accurate than homogenous model in detecting fracture in carbonate reservoir.
It is important to identify fractures in carbonate reservoir.Based on the method to identify fracture and the mathematic principle of numerical simulation,the algorithm and process of fracture detection applied in pre-stack 3D seismic data were designed and realized using numerical simulation of tectonic stress field.For target areas in LH11-1 reef reservoir oilfield in the Dongsha Uplift,Pearl River Mouth Basin,the parameters of pre-stack 3D seismic inversion were closely combined with numerical simulation of tectonic stress field and seismic inversion to construct fine heterogeneous mechanical model.Because of the pre-stack elastic parameter was considered in heterogeneous model,so it is more reasonable and more accurate than homogenous model in detecting fracture in carbonate reservoir.
引文
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[2]丁文龙,漆立新,吕海涛.利用FMI资料分析塔河油田南部中—下奥陶统储层构造应力场[J].现代地质,2009,23(5):852–859.
[3]贺振华,黄德济.缝洞储层的地震检测和预测[J].勘探地球物理进展,2003,26(2):79–83.
[4]杜启振,杨慧珠.方位各向异性介质的裂缝预测方法研究[J].石油大学学报:自然科学版,2003,27(4):32–35.
[5]季玉新,魏修成,刘春园,等.川东北通江—南江—巴中地区嘉陵江组二段白云岩储层预测研究[J].地质学报,2008,82(3):353–359.
[6]郭凯俊,陈勉,金衍.低渗透薄储层天然构造裂缝分布研究[C].西安:中国岩石力学工程学会第七次学术大会论文集,2002,(9):136–138.
[7]唐永,梅廉夫,张春生,等.普光气田飞仙关组储层裂缝特征及其控制因素分析[J].石油天然气学报:江汉石油学院学报,2010,32(2):48–54.
[8]郭璇,钟建华,徐小林,等.非构造裂缝的发育特征及成因机制[J].石油大学学报:自然科学版,2004,28(2):6–12.
[9]吴时国,刘展,王万银,等.东沙群岛海区晚新生代构造特征及其对弧-陆碰撞的响应[J].海洋与湖沼,2004,35(6):481–490.
[10]马丹.关于三维弹性理论、经典薄板理论、厚壁结构理论之间关系的探讨[J].辽宁工学院学报,2001,21(1):48–49.
[11]杜世通.地震波动力学[M].东营:石油大学出版社,1996:28–40.
[12]彭红利,熊钰,孙良田.主曲率法在碳酸盐岩气藏储层构造裂缝预测中的应用研究[J].天然气地球科学,2005,16(3):343–346.
[13]孙尚如.预测储层裂缝的两种曲率方法应用比较[J].地质科技情报,2003,22(4):71–74.
[14]李志勇,曾佐勋,罗文强.裂缝预测主曲率法的新探索[J].石油勘探与开发,2003,30(6):83–85.
[15]岳大力,吴胜和,林承焰,等.流花11-1油田礁灰岩油藏储层非均质性及剩余油分布规律[J].地质科技情报,2005,24(2):90–96.
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