阿尔及利亚BEL构造泥盆系油藏描述
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摘要
阿尔及利亚某区块BEL构造泥盆系储层属中孔特低渗裂缝致密型储层,非均质性强、相变快,储层预测难度大。通过对沉积、构造及含油气性等特征分析,认为Siegenian-Low组砂体发育,连续性好,可形成有利储层;Siegenian-Med组砂体不发育,连续性差,局部地段可形成好储层;Siegenian-Up组砂体较发育,连续性较好,可形成有利储层。运用地震-沉积相分析,结合多属性优化、储层多参数随机模拟、叠前裂缝预测和叠前地震属性含油气性检测等技术,对有利区带进行了综合预测,提出了钻探井位,取得了很好的应用效果。该技术系列已成为阿尔及利亚乃至利比亚、突尼斯等地区泥盆系储层预测及描述的核心技术。
The Devonian reservoir in BEL structure in Algeria belongs to fractured tight reservoir with medium porosity and extralow permeability and has strong heterogeneity and fast facies change, which results in more difficulties in reservoir prediction. Based on the analysis of characteristics of sediment, structure and hydrocarbon-bearing property, it is considered that the sand body of Siegenian-Low reservoir is well developed and has better continuity, and can form favorable reservoir; the sand body of Siegenian-Med reservoir is less developed with poor continuity, and only several part can form reservoir; the sand body of Siegenian-Up reservoir is relatively developed with better continuity, and can form favorable reservoir. Based on seismic-sedimentary facies analysis, combined with techniques such as multi-attribute optimization, reservoir random simulation, pre-stack fracture prediction and pre-stack seismic attribute hydrocarbon detection, the favorable areas are comprehensively predicted, and appraisal well is proposed, in which good application results have been achieved. These techniques have been the key techniques for the reservoir prediction and description in Algeria, and even Libya and Tunisia.
The Devonian reservoir in BEL structure in Algeria belongs to fractured tight reservoir with medium porosity and extralow permeability and has strong heterogeneity and fast facies change, which results in more difficulties in reservoir prediction. Based on the analysis of characteristics of sediment, structure and hydrocarbon-bearing property, it is considered that the sand body of Siegenian-Low reservoir is well developed and has better continuity, and can form favorable reservoir; the sand body of Siegenian-Med reservoir is less developed with poor continuity, and only several part can form reservoir; the sand body of Siegenian-Up reservoir is relatively developed with better continuity, and can form favorable reservoir. Based on seismic-sedimentary facies analysis, combined with techniques such as multi-attribute optimization, reservoir random simulation, pre-stack fracture prediction and pre-stack seismic attribute hydrocarbon detection, the favorable areas are comprehensively predicted, and appraisal well is proposed, in which good application results have been achieved. These techniques have been the key techniques for the reservoir prediction and description in Algeria, and even Libya and Tunisia.
引文
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[2]夏景华.阿尔及利亚石油和天然气工业的现状[J].当代石油石化,2006,14(2):41-44.
[3]年静波,汤磊,刘喜武.地质统计分析在地震资料砂泥岩分布预测中的应用[J].石油物探,2004,43(3):278-282.
[4]孙思敏,彭仕宓.地质统计学反演方法及其在薄层砂体预测中的应用[J].西安石油大学学报:自然科学版,2007,22(1):41-44.
[5]张建林,吴胜和.应用随机模拟方法预测岩性圈闭[J].石油勘探与开发,2003,30(3):114-116.
[6]郑爱萍,刘春平.随机模拟在储层预测中的应用[J].江汉石油职工大学学报,2003,16(3):34-36.
[7]罗士利,罗中华,黄景秋.随机反演技术在薄互层储层预测中的应用[J].吉林大学学报:地球科学版,2006,36(专辑):58-60.
[8]高金玉,马明福,沙雪梅,等.随机模拟方法在阿尔及利亚Oued Mya盆地的应用[J].岩性油气藏,2009,21(3):86-89.
[9]曲寿利,季玉新,王鑫.全方位P波属性裂缝检测方法[J].石油地球物理勘探,2001,36(4):390-397.
[10]甘其刚,杨振武,彭大钧.振幅随方位角变化裂缝检测技术及其应用[J].石油物探,2004,43(4):373-376.
[11]杨勤勇,赵群,王世星,等.纵波方位各向异性及其在裂缝检测中的应用[J].石油物探,2006,45(2):177-181.
[12]赵虎,尹成,张华光,等.属性技术在油气检测中的应用[J].重庆科技学院学报:自然科学版,2009,11(4):36-37.
[13]黄中玉,王于静,苏永昌.一种新的地震波衰减分析方法——预测油气异常的有效工具[J].石油地球物理勘探,2000,35(6):768-773.
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