赛汉塔拉凹陷火山岩储层地震预测方法研究与应用
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摘要
二连盆地赛汉塔拉凹陷火成岩油气藏是一个重要的勘探领域,近几年得到了高度重视。该区的侏罗系安山岩和玄武岩为主要目的层,有效预测火山岩储层分布情况是勘探难点之一。针对火山岩储层特征及预测难点,利用电阻率拟声波反演、地震属性等方法预测了火山岩的空间分布规律及厚度变化。根据火山岩古地貌、断裂结构特征及地震相,采用成因预测法和属性预测法相结合的办法预测了火山岩的物性。综合火山岩岩性和物性预测结果,结合岩心资料进行了火山岩岩相的预测。分析认为裂缝发育带、中距离火山斜坡相为有利的储集相带。
The pyrolith reservoir of Saihantala sag in Erlian Basin is an important exploration area and has been given high priority in recent years.Jurassic andesite and basalt of the area are the main drilling target.It is one of the exploration difficulties to predict the distribution of pyrolith reservoir effectively.Aiming at the lava reservoir characteristics and difficulties in prediction,some methods are used to predict the spatial distribution patterns and the thickness changes of andesite and basalt,such as nature gamma analog acoustic wave inversion,nature gamma reservoir parameter inversion,and seismic attributes.According to the primal physiognomy of lava,characteristics of the fracture structure,seismic facies,the cause formation method and attributes predicting method are used to predict the characteristics of volcanic rock.The volcanic facies is predicted by synthesizing the volcanic lithology and the result of inversion prediction,in combination with core data.The development areas of fracture and volcano slopes which are at a middle distance from the volcano center are considered to be favorable reservoirs.
The pyrolith reservoir of Saihantala sag in Erlian Basin is an important exploration area and has been given high priority in recent years.Jurassic andesite and basalt of the area are the main drilling target.It is one of the exploration difficulties to predict the distribution of pyrolith reservoir effectively.Aiming at the lava reservoir characteristics and difficulties in prediction,some methods are used to predict the spatial distribution patterns and the thickness changes of andesite and basalt,such as nature gamma analog acoustic wave inversion,nature gamma reservoir parameter inversion,and seismic attributes.According to the primal physiognomy of lava,characteristics of the fracture structure,seismic facies,the cause formation method and attributes predicting method are used to predict the characteristics of volcanic rock.The volcanic facies is predicted by synthesizing the volcanic lithology and the result of inversion prediction,in combination with core data.The development areas of fracture and volcano slopes which are at a middle distance from the volcano center are considered to be favorable reservoirs.
引文
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[2]文百红,杨辉,张研,等.中国典型火山岩油气藏地球物理特征及有利区带预测[J].中国石油勘探,2006,11(4):67～73.
[3]胡治华,胡明毅,夏锦芬,等.松辽盆地兴城火山岩相中测井资料的特征及应用[J].中国石油勘探,2007,12(4):32～36.
[4]陈文涛,张晓东,陈发景,等.松辽盆地晚侏罗世火山岩与油气[J].中国石油勘探,2001,6(2):23～26.
[5]邱家骧,陶奎元,赵俊磊,等.火山岩[M].北京:地质出版社,1996:10～22.
[6]赵政璋,赵贤正,王英民,等.储层地震预测理论与实践[M].北京:科学出版社,2005:90～96,403～416.
[7]罗静兰,邵红梅,张成立.火山岩油气藏研究方法与勘探技术综述[J].石油学报,2003,24(1):31～37.
[8]于英太.二连盆地火山岩油藏勘探前景[J].石油勘探与开发,1988,15(4):9～19.
[9]赵澄林,刘孟慧,胡爱梅,等.特殊油气储层[M].北京:石油工业出版社,1997:75～79.
[10]潘保芝,薛林强,李舟波.裂缝性火成岩储层测井评价方法与应用[M].北京:石油工业出版社,2003:1～11,58～61.
[11]吕希学,肖焕钦,刘惠民,等.根据地震勘查信息预测火成岩储集体[J].浙江大学学报,2003,37(2):249～253.
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