文明寨油田构造精细解释与储层预测——以明一块沙二下油藏为例
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摘要
文明寨油田是东濮凹陷被多向断层切割的极复杂断块油田,含油层系多。明一块是文明寨油田重要开发区块之一,块内次级断层发育,构造极其复杂,目的层沙二下亚段砂岩储层单层厚度薄、横向变化大。明一块内部的小断层识别、低幅度构造解释、薄砂体预测是该区研究的难点。利用新采集的高精度三维地震资料,采用多方向切线与时间切片结合、相干体切片与地震剖面约束、开发"动、静态"资料约束等方法,进行小断层、井间隐伏断层精细解释,通过地震属性敏感性分析、多种地震属性综合应用,定量分析刻画了砂体。通过以上研究在该区有效解释了断距10m以上井间断层,描述了厚度5m以上单砂体的井间变化特征。将研究成果应用于开发方案部署,解决了明一块部分井区注采矛盾,取得了较好效果。
Since there are multi-types of multi-direction faults in Dongpu depression,Wenmingzhai Oilfield is an extra-complicated faultedblock oilfield with multi oil-bearing layers.As one of the important developing blocks,Ming 1 block has multi sub-level faults and extremely complex structures.The target lower Es2 is characterized by thin single layer and large lateral alternation.Small fault recognition, low-relief structure interpretation and thin sandbody prediction is difficult in the area.By using the new acquired high-precision 3-D seismic data,we proposed the methods including combination of multi-directions cross-sections and time slices,constraint by coherent slice and seismic sections as well as dynamic and static development data,to carry out fine interpretation of small faults and crosswell buried fault.Through sensitivity analysis of seismic attributes and comprehensive application of multi seismic attributes,the sandbodies were quantitatively characterized.Through the above research, the distribution of crosswell faults with the displacement longer than 10m was interpreted,and the crosswell alternation of single sand bodies thicker than 5m were characterized.
Since there are multi-types of multi-direction faults in Dongpu depression,Wenmingzhai Oilfield is an extra-complicated faultedblock oilfield with multi oil-bearing layers.As one of the important developing blocks,Ming 1 block has multi sub-level faults and extremely complex structures.The target lower Es2 is characterized by thin single layer and large lateral alternation.Small fault recognition, low-relief structure interpretation and thin sandbody prediction is difficult in the area.By using the new acquired high-precision 3-D seismic data,we proposed the methods including combination of multi-directions cross-sections and time slices,constraint by coherent slice and seismic sections as well as dynamic and static development data,to carry out fine interpretation of small faults and crosswell buried fault.Through sensitivity analysis of seismic attributes and comprehensive application of multi seismic attributes,the sandbodies were quantitatively characterized.Through the above research, the distribution of crosswell faults with the displacement longer than 10m was interpreted,and the crosswell alternation of single sand bodies thicker than 5m were characterized.
引文
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[3]牟荣.复杂小断块圈闭识别描述方法——以苏北盆地为例[J].石油与天然气地质,2006,27(2):269-274
[4]向树安,郁飞,刘群星.潜江凹陷复杂断块油藏构造精细描述技术[J].断块油气田,2006,13(3):10-12
[5]崔世凌,秦爽,杨泽蓉,等.惠民凹陷复杂断块精细描述技术及应用[J].石油物探,2002,41(3):347-353
[6]张树海.细分面元在高密度三维地震勘探中的应用[J].勘探地球物理进展,2009,32(6):399-403
[7]韩保清,蔡其新,张树海,等.东濮凹陷富油气区带高精度三维地震实践与认识[J].中国石油勘探,2009 (6):25-26
[8]李绍康,马建波,银燕惠,等.濮城-卫城地区复杂小断块高精度三维地震成像技术[J].中国石油勘探, 2009(6):37-41
[9]秦伟军,张永华,全书进.精细构造解释与储层预测技术在泌阳凹陷中南部地区二次勘探中的应用[J].石油物探,2004,43(1):62-66
[10]徐梅,谭明友,张明振,等.垦东滩海上第三系油藏地震描述技术[J].石油物探,2007,46(6):633-636
[11]佘德平,曹辉,郭全仕,等.应用三维相干技术进行精细地震解释[J].石油物探,2000,39(2):83-88
[12]印兴耀,韩文功,李振春,等.地震技术新进展(下) [M].山东东营:中国石油大学出版社,2006:76-81
[13]王萍,邵先杰,马平华,等.复杂断块油田微构造成因特征分析[J].重庆科技学院学报(自然科学版), 2009,11(3):1-4
[14]何碧竹,周杰,汪功怀.利用多元地震属性预测储层信息[J].石油地球物理勘探,2003,38(3):258-262
[15]张研,张颖,孙夕平,等.地震储集层预测技术在不同勘探开发阶段的应用[J].石油勘探与开发,2006,33 (1):59-63
[16]王西文,刘全新,周嘉玺,等.精细储层预测技术在板南5-3井区的应用[J].石油物探,2003,42(3):389-394
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