有关山地地震勘探构造成果的钻探失利井诠释与解析
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摘要
油气勘探的探井是否有失利井,是一个颇受争议的话题。从油气勘探不同环节和不同角度出发,初步厘定和诠释了成功井和失利井的定义。目前,油气田勘探开发的井位部署主要依据是地震勘探成果,地震勘探是一门预测性科学,部署探井有成功和失利是正常现象。山地地震勘探主要对象为背斜圈闭。地震勘探过程包括采集、处理、解释3个环节,其中一个环节出现偏差,都会导致失利井发生。采集资料品质差导致处理解释存在多解性,地震成果精度降低;处理流程参数不当,产生构造假象,误导解释人员做出错误的判断;由于山地复杂构造解释的复杂性,导致解释中的层位标定、构造建模及速度建场会出现偏差,造成井—震不符。失利井分析,就是解释人员及时获得正钻井地质及测井信息,利用地震分析技术,对原有地震成果进行确认或修正,进而采取相应的地震勘探技术和措施,获得新的地震成果,及时地指导下一步钻探工作,最大限度地提高油气勘探效益。
Whether there is drilling failure in oil/gas exploration is a controversial topic.This paper preliminarily defines successful well and failed well from different aspects and different angles of oil/gas exploration.Currently well location arrangement of oil/gas exploration and development is mainly based on seismic exploration results.Seismic exploration is a predicative science,and it is normal that there are both success and failure in well arrangement.Anticline trap is the major target of mountainous seismic exploration.Seismic exploration consists of three aspects,i.e.acquisition,processing and interpretation,and deviation in each aspect may result in drilling failure.Poor quality of acquired data may lead to multiple solutions of processing and interpretation,thus causing lower precision of seismic results.Improper processing parameters may result in false structural appearance and mislead interpreters to make wrong decisions.Complex mountainous structure interpretation may cause deviation of horizon calibration,structural modeling and velocity field,resulting in well-to-seismic incoincidence.Analysis on drilling failure means that interpreters timely acquire geologic and log data of drilled wells,use seismic techniques to confirm or correct original results,then carry out corresponding seismic exploration techniques and measures to acquire new seismic results,timely guide drilling work of next step,and maximize oil/gas exploration benefit.
Whether there is drilling failure in oil/gas exploration is a controversial topic.This paper preliminarily defines successful well and failed well from different aspects and different angles of oil/gas exploration.Currently well location arrangement of oil/gas exploration and development is mainly based on seismic exploration results.Seismic exploration is a predicative science,and it is normal that there are both success and failure in well arrangement.Anticline trap is the major target of mountainous seismic exploration.Seismic exploration consists of three aspects,i.e.acquisition,processing and interpretation,and deviation in each aspect may result in drilling failure.Poor quality of acquired data may lead to multiple solutions of processing and interpretation,thus causing lower precision of seismic results.Improper processing parameters may result in false structural appearance and mislead interpreters to make wrong decisions.Complex mountainous structure interpretation may cause deviation of horizon calibration,structural modeling and velocity field,resulting in well-to-seismic incoincidence.Analysis on drilling failure means that interpreters timely acquire geologic and log data of drilled wells,use seismic techniques to confirm or correct original results,then carry out corresponding seismic exploration techniques and measures to acquire new seismic results,timely guide drilling work of next step,and maximize oil/gas exploration benefit.
引文
[1]杜金虎,王招明,雷刚林,等.柯东1风险探井的突破及其战略意义[J].中国石油勘探,2011,16(2):1~5.
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[6]梁顺军,肖宇,刁永波,等.库车坳陷山地复杂构造速度场研究及其应用效果[J].中国石油勘探,2011,16(4):59~64.
[2]杜金虎,赵贤正,张以明,等.牛东1风险探井重大发现及其意义[J].中国石油勘探,2012,17(1):1~7.
[3]梁顺军,肖宇.库车坳陷西秋构造带盐下低幅度构造圈闭研究及勘探思路[J].中国石油勘探,2012,17(1):19~24.
[4]彭更新,梁顺军.山区复杂构造低信噪比地震资料的修饰性处理[J].石物物探,2004,43(3):251~257.
[5]梁顺军,肖宇,杨晓,等.库车坳陷盐相关构造建模新进展[J].中国石油勘探,2010,15(6):10~20.
[6]梁顺军,肖宇,刁永波,等.库车坳陷山地复杂构造速度场研究及其应用效果[J].中国石油勘探,2011,16(4):59~64.
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