宽带约束地震反演在兰尕地区储层预测中的应用
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摘要
兰尕背斜带处于塔河油田南部,具有发育非背斜圈闭的条件,勘探程度较低,适用于宽带约束地震反演技术进行储层预测。作者介绍了宽带约束稀疏脉冲反演技术的基本原理、实现方法以及反演流程,并在兰尕地区首次利用约束稀疏脉冲反演技术进行了储层预测,反演过程中运用了9口井进行约束。将反演结果与井真实情况相对比,上油组、中油组与钻井、测井解释储层吻合较好,下油组顶面吻合较好,内部及底部与钻井有一定差异。根据反演结果圈定了砂体发育带,确定了岩性圈闭,并最终落实了钻井目标。该方法在勘探程度比较低的地方可以较准确地预测储层岩性和展布规律,对油田的进一步勘探开发,以及降低勘探开发风险有一定的指导意义。
The anticline belt of the Langa region is located in the south of the Tahe oil field.It bears the condition for developing of non-anticline straps and is suitable for using the broadband seismic inversion technology to predict reservoirs.But the exploration level in this region is low.The authors introduced the fundamental principles,realizations and procedures of the broadband constrained seismic inversion and used this method to predict the reservoirs in the Langa region for the first time.Nine wells were used during the procedure of constrained inversion.The comparison between the inversion results and the drilling outcomes shows that the upper and middle oil sets are consistent well with the drilling and logging explanation reservoir,the top of the lower oil belt agrees well,while the inner and bottom have some differences from the drilling results.The development belts of sand bodies as well as lithologic traps were located and ultimately the drilling targets were pointed out.This method can predict the reservoir lithology and spreading regularity more accurately in such places where the exploration level is low.And it has some guiding significance in further exploring and developing oil fields and lowers the risk of exploration.
The anticline belt of the Langa region is located in the south of the Tahe oil field.It bears the condition for developing of non-anticline straps and is suitable for using the broadband seismic inversion technology to predict reservoirs.But the exploration level in this region is low.The authors introduced the fundamental principles,realizations and procedures of the broadband constrained seismic inversion and used this method to predict the reservoirs in the Langa region for the first time.Nine wells were used during the procedure of constrained inversion.The comparison between the inversion results and the drilling outcomes shows that the upper and middle oil sets are consistent well with the drilling and logging explanation reservoir,the top of the lower oil belt agrees well,while the inner and bottom have some differences from the drilling results.The development belts of sand bodies as well as lithologic traps were located and ultimately the drilling targets were pointed out.This method can predict the reservoir lithology and spreading regularity more accurately in such places where the exploration level is low.And it has some guiding significance in further exploring and developing oil fields and lowers the risk of exploration.
引文
[1]张永升,石玉,李宗杰,等.新疆塔里木盆地沙雅隆起兰尕地区三维地震勘探成果报告[R].乌鲁木齐:中国石化西北分公司勘探开发研究院资料室,2000.
[2]李庆忠.论地震约束反演的策略[J].石油地球物理勘探,1988,33(4):423-438.
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[4]李正文,李琼,吴朝蓉.沉积盆地有效储集层综合识别技术[M].成都:四川科学技术出版社,2002.
[5]黄伟传,武恒志,李子锋,等.东营凹陷辛154井区三维地震资料多井约束反演及储层预测[J].石油物探,2004,43(5):466-470.
[6]欧阳健.石油测井解释与储层描述[M].北京:石油工业出版社,1994.
[7]王延光.储层地震反演方法及应用中的关键问题与对策[J].石油物探,2002,41(3):299-303.
[8]赵政璋,何志新,阎世信,等.储层预测技术及应用实例[M].北京:石油工业出版社,2000.
[9]傅长生.储层预测技术研究新进展[M].北京:石油工业出版社,1998.
[2]李庆忠.论地震约束反演的策略[J].石油地球物理勘探,1988,33(4):423-438.
[3]陆基孟.地震勘探原理[M].山东东营:石油大学出版社,1993.
[4]李正文,李琼,吴朝蓉.沉积盆地有效储集层综合识别技术[M].成都:四川科学技术出版社,2002.
[5]黄伟传,武恒志,李子锋,等.东营凹陷辛154井区三维地震资料多井约束反演及储层预测[J].石油物探,2004,43(5):466-470.
[6]欧阳健.石油测井解释与储层描述[M].北京:石油工业出版社,1994.
[7]王延光.储层地震反演方法及应用中的关键问题与对策[J].石油物探,2002,41(3):299-303.
[8]赵政璋,何志新,阎世信,等.储层预测技术及应用实例[M].北京:石油工业出版社,2000.
[9]傅长生.储层预测技术研究新进展[M].北京:石油工业出版社,1998.
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