泌阳凹陷复杂断裂带三维地震资料精细解释方法和效果分析
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摘要
泌阳凹陷北部斜坡带发育一系列规模不同的鼻状构造,由于断层的切割,在鼻状构造背景上发育了多个断鼻、断块群圈闭。位于北部斜坡带中部新庄地区的断裂鼻状构造是油气运移的指向区,发育有小断块、小断鼻和地层不整合油藏。针对北部斜坡带构造破碎、圈闭面积小、断层小等特点,以三维地震资料和测井资料为基础,利用地震层位标定、三维可视化解释、相干体断层分析等技术对新庄地区古近系核桃园组进行了构造精细解释,发现并落实了面积大于0.05km~2的小断鼻、断块和地层不整合等圈闭,解释目的层深度与钻井深度的绝对误差在5 m以内。根据解释结果,部署钻探了多口井,有60%的井钻遇油层,新增探明石油地质储量425.19×10~4t。
The northern slope of Biyang depression is characterized by a series of different-scale nose-like structures;because of the cutting of faults,some faulted noses and faulted block structural traps are developed along the nose-like structures.Faulted nose structures in Xinzhuang area at the central of slope are the directional region of hydrocarbon migration,with small fault blocks,small faulted noses and unconformity reservoirs developed in the area.Aiming at the characteristics of broken structures,small trap area and small faults in the northern slope,based on the 3-D seismic data and logging data, some techniques were utilized to interpret Hetaoyuan formation of Paleogene system in Xinzhuang area,including seismic horizon calibration,3-D visualization interpretation and fault analysis by coherence cubes.The ascertained trap is bigger than 0.05km~2,including small faulted nose,fault block and unconformity formation. The absolute error between interpreted depth and drilling depth of target is smaller than 5 m.some wells were deployed and drilled in terms of the interpretation results,and 60%of the wells drilled oil layers.The newly proved geological reserves are 425.19×10~4 t.
The northern slope of Biyang depression is characterized by a series of different-scale nose-like structures;because of the cutting of faults,some faulted noses and faulted block structural traps are developed along the nose-like structures.Faulted nose structures in Xinzhuang area at the central of slope are the directional region of hydrocarbon migration,with small fault blocks,small faulted noses and unconformity reservoirs developed in the area.Aiming at the characteristics of broken structures,small trap area and small faults in the northern slope,based on the 3-D seismic data and logging data, some techniques were utilized to interpret Hetaoyuan formation of Paleogene system in Xinzhuang area,including seismic horizon calibration,3-D visualization interpretation and fault analysis by coherence cubes.The ascertained trap is bigger than 0.05km~2,including small faulted nose,fault block and unconformity formation. The absolute error between interpreted depth and drilling depth of target is smaller than 5 m.some wells were deployed and drilled in terms of the interpretation results,and 60%of the wells drilled oil layers.The newly proved geological reserves are 425.19×10~4 t.
引文
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2陈文礼,林社卿,杨道庆,等.泌阳凹陷下二门油田构造特征与油气聚集[J].石油实验地质,2003,25(3): 28-33
3邱荣华,李连生,张永华.泌阳凹陷北部斜坡带油气富集控制因素与勘探技术[J].石油天然气学报,2006,28 (2):39-41
4秦伟军,林社卿,程哲,等.南襄盆地泌阳凹陷油气成藏作用及成藏模式[J].石油与天然气地质,2005,26(5): 136-141
5张永华,罗家群,田小敏,等.高精度三维地震在泌阳凹陷北部复杂断块群勘探中的应用[J].石油物探,2005, 44(3):280-284
6邱荣华,孙耀华,张永华,等.泌阳凹陷新庄地区浅层三维地震勘探[J].石油与天然气地质,2005,26(2): 115-118
7张永华,马义忠,田小敏.泌阳凹陷新庄地区浅层复杂断块群成像研究[J].石油物探,2008,47(4):376-380
8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
9李国发,廖前进,王尚旭.合成地震记录层位标定若干问题的探讨[J].石油物探,2008,47(2):145-149
10石玉.塔河油田合成地震记录的制作和应用[J].石油物探,2004,43(4):400-403
11张永华.三维地震资料综合解释方法探讨[J].石油物探,2004,43(1):49-53
12李阳.油藏综合地球物理技术在垦71井区的应用[J].石油物探,2008,47(2):107-115
13苗青,潘懋,高洪亮,等.用三维可视化技术解释潜山复杂断裂构造[J].新疆石油地质,2008,29(3):364-366
14余功铭,张永华,梁运基,等.复杂断裂构造带三维地震勘探技术及效果[J].新疆石油地质,2007,28(1): 101-104
15 Marfurt K J,Kirlin R L,Farmer S L,et al.3-D seismic attributes using a semblance-based coherency algo- rithm[J].Geophysics,1998,63(4).:1 150-1 165
16张军华.C3相干体在断层和裂缝识别中的应用[J].地震学报,26(5):560-563
17邱荣华,田小敏,付代国,等.泌阳富油凹陷油气深化勘探实践与认识[J].石油天然气学报,2007,29(2): 42-44
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