低阻油气层成因及测井识别评价方法分析
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摘要
低阻油气层与邻近水层相比,岩性和孔隙度测井特征相似,电阻率测井差异小,甚至基本一致,造成油气层和水层区分困难。随着勘探开发的不断深入,国内陆上和海域主要含油气盆地中均已发现低阻油气层,为勘探开发带来可观的储量产量和经济效益,因此迫切需要总结其成因及测井识别评价方法。地质成因包括岩性因素、储层因素、地层水矿化度、低幅度圈闭和油气性质等;工程成因包括钻井液侵入、测井仪器和钻井工艺等。双电阻率法、视地层水电阻率法、自然电位减小系数法和测井曲线特征集法等7种实用低阻油气层测井识别方法大大提高了测井解释准确度。开展以饱和度为核心的低阻油气层定量评价,建立W-S和三水饱和度模型。
Compared with the adjacent water layer, the low resistivity oil gas layer has similar logging characteristics in lithology and porosity, also have small difference of resistivity in logging, so it is difficult to differentiate water layer from oil gas layer. Along with the deepening of exploration and development, the low resistivity oil gas layer have been found in main oil and gas bearing basins in land and sea area, it will bring on considerable reserves, output and economic benefit for the exploration and development, so it is necessary to summarize the genesis of low resistivity oil gas layer and its logging identification evaluation. The geological genesis include lithology, reservoir, formation water salinity, low amplitude trap and oil gas property, and the engineering genesis include the drilling fluid invasion, logging instruments and drilling technologies. Seven methods(double resistivity, apparent formation water resistivity, spontaneous potential decreasing coefficient method and the method of well logging curves features and so on) are successively put forward to identify the low resistivity oil gas layer, the accuracy of logging interpretation is improved greatly. The quantitative evaluation of low resistivity oil gas layer, which is at the core of saturation, is successively put forward, and the W-S and three water saturation models are established.
Compared with the adjacent water layer, the low resistivity oil gas layer has similar logging characteristics in lithology and porosity, also have small difference of resistivity in logging, so it is difficult to differentiate water layer from oil gas layer. Along with the deepening of exploration and development, the low resistivity oil gas layer have been found in main oil and gas bearing basins in land and sea area, it will bring on considerable reserves, output and economic benefit for the exploration and development, so it is necessary to summarize the genesis of low resistivity oil gas layer and its logging identification evaluation. The geological genesis include lithology, reservoir, formation water salinity, low amplitude trap and oil gas property, and the engineering genesis include the drilling fluid invasion, logging instruments and drilling technologies. Seven methods(double resistivity, apparent formation water resistivity, spontaneous potential decreasing coefficient method and the method of well logging curves features and so on) are successively put forward to identify the low resistivity oil gas layer, the accuracy of logging interpretation is improved greatly. The quantitative evaluation of low resistivity oil gas layer, which is at the core of saturation, is successively put forward, and the W-S and three water saturation models are established.
引文
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[13]王赛英,赵冠军,张萍等.低阻油层形成机理及测井识别方法研究[J].特种油气藏,2010,17(4):10-14.
[14]刘超威.鄂尔多斯盆地姬塬地区长2低阻油层分布及成藏控制因素研究[D].西南石油大学,2015:8-30.
[15]Waxman M H,Smits L J M.Ionic double-layer conductivity in oilbearing shaly sands[J].SPE,1968,4(1):26-51.
[16]De Kuijper A,Sandor R K J,Hofinan J P,et al.Conductivity of two-component systems[J].Geophysics,1996,61(1):162-168.
[17]Berg C R,A comparison of SATORI and HB effective-medium conductivity models[J].The Log Analyst,1998,39(5):34-39.
[18]陈刚.一种新的识别低电阻率油层的交会图及其应用[J].中国石油大学学报(自然科学版),2008,32(3):36-39.
[19]李万才,陈玉魁.利用核磁共振测井技术识别松南Q地区低阻油气层[J].石油物探,2003,42(1):111-116.
[20]陈学义,魏斌,陈艳等.辽河油田滩海地区低阻油层成因及其精细解释[J].测井技术,2000,24(1):55-59.
[21]卞应时,张风敏,高祝军等.大港油田中浅层低阻油气层成因分析及评价[J].特种油气藏,2002,9(2):26-29.
[22]罗宁,刘宇,何绪等.川中低阻油气藏储层流体性质判别方法探讨[J].天然气勘探与开发,2010,33(2):26-28.
[23]王冬娟.达尔其油田低阻油气层测井识别[J].吐哈油气,2011,16(1):63-66.
[2]赵政璋,欧阳健,刘德来等.渤海湾地区低电阻油气层测井技术与解释方法[M].北京:石油工业出版社,2000:1-2.
[3]张春,蒋裕强,郭红光等.安岳—威东地区须家河组低渗、低阻油气层形成机理[J].国外测井技术,2010,176(2):34-37.
[4]桑华.渤海油田低阻油气藏测井识别评价方法研究[D].中国石油大学,2008:8-20.
[5]中国石油勘探与生产公司.低阻油气藏测井识别方法与技术[M].北京:石油工业出版社,2006:1-175.
[6]程相志,范宜仁,周灿灿等.淡水储层中低阻油气层识别技术[J].地学前缘,2008,15(1):146-152.
[7]潘和平,樊政军,马勇.低阻油气层识别方法研究[J].天然气工业,2006,26(2):66-68.
[8]Hill H J,Winsauer J D.Effect of clay and water salinity on electrochemical behaviour of reservoir rock[J].AIME,1956,207,65-72.
[9]谢然红,低电阻率油气层测井解释方法[J].测井技术,2001,25(3):199-203.
[10]曾文冲.低电阻率油气层的类型,成因及评价方法的分析(下)[J].地球物理测井,1991,15(3):149-152.
[11]邵维志,李浩,刘辉等.大港白水头地区低阻油气层测井评价[J].测井技术,2001,25(2):127-130.
[12]秦华,王威.川东北元坝须家河组第二段下亚段气层低阻成因[J].成都理工大学学报(自然科学版),2014,41(5):577-562.
[13]王赛英,赵冠军,张萍等.低阻油层形成机理及测井识别方法研究[J].特种油气藏,2010,17(4):10-14.
[14]刘超威.鄂尔多斯盆地姬塬地区长2低阻油层分布及成藏控制因素研究[D].西南石油大学,2015:8-30.
[15]Waxman M H,Smits L J M.Ionic double-layer conductivity in oilbearing shaly sands[J].SPE,1968,4(1):26-51.
[16]De Kuijper A,Sandor R K J,Hofinan J P,et al.Conductivity of two-component systems[J].Geophysics,1996,61(1):162-168.
[17]Berg C R,A comparison of SATORI and HB effective-medium conductivity models[J].The Log Analyst,1998,39(5):34-39.
[18]陈刚.一种新的识别低电阻率油层的交会图及其应用[J].中国石油大学学报(自然科学版),2008,32(3):36-39.
[19]李万才,陈玉魁.利用核磁共振测井技术识别松南Q地区低阻油气层[J].石油物探,2003,42(1):111-116.
[20]陈学义,魏斌,陈艳等.辽河油田滩海地区低阻油层成因及其精细解释[J].测井技术,2000,24(1):55-59.
[21]卞应时,张风敏,高祝军等.大港油田中浅层低阻油气层成因分析及评价[J].特种油气藏,2002,9(2):26-29.
[22]罗宁,刘宇,何绪等.川中低阻油气藏储层流体性质判别方法探讨[J].天然气勘探与开发,2010,33(2):26-28.
[23]王冬娟.达尔其油田低阻油气层测井识别[J].吐哈油气,2011,16(1):63-66.