速度谱法孔隙流体压力预测技术在塔河油田的应用
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摘要
分析了地层压力异常形成的原因,介绍了测井曲线预测地层压力的等效深度法和Fillippone速度谱预测地层压力的原理。给出了两种预测结果与MDT测试压力的对比数据。测井声波时差曲线预测地层压力在塔河油田托浦台工区的应用表明,该区地层压力系数范围在1.0~1.2,属于正常压力系统;速度谱预测地层压力与MDT测试压力的最大误差为5%,而等效深度法预测误差最大达15%左右,速度谱法比等效深度法预测地层压力具有更高的精度和可靠性。研究认为,利用地震处理速度谱法进行钻前压力预测,可以预测大套地层压力的变化趋势,可以用来指导钻井泥浆密度的设计,为提高钻井效率和安全钻井提供技术支持。
The reasons for anomalous pore pressure are analyzed in this paper.The methods of equivalent depth to predict pore pressure from well logging data and Fillippone' formula based on seismic velocity are introduced and compared with the results from MDT pressure data.The results of prediction of pore pressure from well sonic data in the Tahe oilfield TPT area shows that this area pressure coefficient change from 1.0 to 1.2,can be classified as normal pressure system.The maximum error between MDT and predicted pore pressure by Fillippone' formula reaches 5% as predictied pore pressure by equivalent depth method reaches 15%,so Fillippone' formula has high precision and reliability than the equivalent depth method.This study show that prediction of pore pressure using seismic velocity can predict the layer pressure which embodies the pressure change trend of a heavy layer and design the mud density before drill.It can also can improve the drill productivity and approve the support for safe drill.
The reasons for anomalous pore pressure are analyzed in this paper.The methods of equivalent depth to predict pore pressure from well logging data and Fillippone' formula based on seismic velocity are introduced and compared with the results from MDT pressure data.The results of prediction of pore pressure from well sonic data in the Tahe oilfield TPT area shows that this area pressure coefficient change from 1.0 to 1.2,can be classified as normal pressure system.The maximum error between MDT and predicted pore pressure by Fillippone' formula reaches 5% as predictied pore pressure by equivalent depth method reaches 15%,so Fillippone' formula has high precision and reliability than the equivalent depth method.This study show that prediction of pore pressure using seismic velocity can predict the layer pressure which embodies the pressure change trend of a heavy layer and design the mud density before drill.It can also can improve the drill productivity and approve the support for safe drill.
引文
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[11]李忠慧,楼一珊,王兆峰,等.地层压力预测技术在准噶尔盆地钻井中的应用[J].天然气工业,2009,29(8):66-68.Li Zhonghui,Lou Yishan,Wang Zhaofeng,et al.Application ofpore pressure prediction in drilling in Zhunger Basin[J].Gasindustry.2009,29(8):66-68.
[12]漆立新,云露.塔河油田奥陶系碳酸盐岩岩溶发育特征与主控因素[J].石油与天然气地质,2010,31(1):1-12.Qi Lixin,Yun Lu.Development characteristics and main con-trolling factors of the Ordovician carbonate karst in Tahe oilfield[J].Oil&Gas Geology,2010,31(1):1-12.
[13]张卫华,何生,郭全仕.地震资料预测压力方法和展望[J].地球物理学进展,2005,20(3):814-817.Zhang Weihua,He Sheng,Guo Quanshi.The methods andheadway for pressure prediction[J].Progress in Geophysics,2005,20(3):814-817.
[14]Sayers C M.An introduction to velocity-based pore-pressure es-timation[J].The Leading Edge,2006,25(12):1496-1499.
[15]Terzaghi K.Theoretical soil mechanics[M].NewYork:JohnWiley and Sons Inc,1943:528.
[16]Gutierrez MA,Braunsdorf N R,Couzens B A.Cali-bration andranking of pore-pressure prediction models[J].The LeadingEdge,2006,25(12):1516-1523.
[17]Fillippone W R.Estimation of formation parameters and theprediction of overpressure from seismic data[C]∥Expandedabstracts of 52nd annual international SEG Meeting,1982:502-503.
[18]金业权,王越之,李自俊.地震资料预测地层压力的研究[J].石油钻探技术,2001,29(3):28-29.Jin Yequan,Wang Yuezhi,Li Zijun.Study on prediction of for-mation pressure with seismic Data[J].PetroleumDrilling Tech-niques,2001,29(3):28-29.
[19]李新宁,李留中,徐向阳,等.异常地层压力的形成原因及预测方法[J].吐哈油气,2006,11(2):120-126.Li Xinyu,Li Liuzhong,Xu Xiangyang,et al.The resons andprediction methods of abnormal pressure of layer[J].Tuha Oil&Gas,2006,11(2):120-126.
[2]曾治平,郝芳,宋国奇,等.车镇凹陷套尔河洼陷古地层压力演化与油气幕式成藏[J].石油与天然气地质,2010,31(2):193-197.Zeng Zhiping,Hao Fang,Song Guoqi,et al.Palaeo-formationpressure evolution and episodic hydrocarbonaccumulation inTao’erhe Depression,Chezhen Sag[J].Oil&Gas Geology,2010,31(2):193-197.
[3]赵健.松辽盆地西斜坡泥岩地层压实规律[J].石油与天然气地质,2010,31(4):486-492.Zhao Jian.Laws of mudstone compaction on the west slope ofthe Songliao Basin[J].Oil&Gas Geology,2010,31(4):486-492.
[4]刘晖,操应长,姜在兴,等.渤海湾盆地东营凹陷沙河街组四段膏盐层及地层压力分布特征[J].石油与天然气地质,2009,30(3):287-293.Liu Hui,Cao Yingchang,Jiang Zaixing,et al.Distribution cha-racteristic of evaporates and formation pressure of the forthmember of the Shahejie Formation in the Dongying Sag,the Bo-hai Basin[J].Oil&Gas Geology,2010,31(3):287-293.
[5]宁松华,贾民强,龚丹.托浦台石炭系砂泥岩储层预测[J].新疆石油天然气,2006,2(4):4-6.Ning Songhua,Jia Minqiang,Gong Dan.Sand and shale reser-voir prediction in Tuoputai area[J].Xinjiang Oil&Gas,2006,2(4):4-6.
[6]魏茂安,陈潮,王延江.地层孔隙压力预测新方法[J].石油与天然气地质,2007,28(3):395-400.Wei Maoan,Chen Chao,Wang Yanjiang.Newapproach for porepressure prediction[J].Oil&Gas Geology,2007,28(3):395-400.
[7]曾治平,杨世刚,肖伶俐,等.东濮凹陷文留、桥口与白庙地区地层超压对有机质演化的影响[J].石油与天然气地质,2006,28(4):214-216.Zeng Zhiping,Yang Shigang,Xiao Lingli,et al.Effect of over-pressure on organic matter evolution in Wenliu,Qiaokou andBaimiao regions of Dongpu Depression[J].Oil&Gas Geology,2006,28(4):214-216.
[8]郭建平,冯兴强.塔河地区泥盆系东河塘组储层特征研究[J].资源与产业2009,11(2):108-113.Guo Jianping,Feng Xingqiang.Characteristics of DevonianDonghetang Formation reservoir in Tahe area[J].Resources&Industries,2009,11(2):108-113.
[9]季玉新,刘春园,陈冬,等.分频反演方法及其在塔河A区储层预测中的应用[J].石油与天然气地质,2010,31(1):38-42.Ji Yuxin,Liu Chunyuan,Chen Dong,et al.Frequency-dividedinversion and its application to reservoir prediction in Tahe oil-field[J].Oil&Gas Geology,2010,31(1):38-42.
[10]翟振飞,傅恒,黄海平,等.塔里木盆地托浦台泥盆系东河砂岩沉积特征[J].重庆科技学院学报,2010,12(1):14-17.Zhai Zhenfei,Fu Heng,Huang Haiping,et al.Sedimentarycharacteristics of Devonian Donghe sandstone in Tuoputai,Ta-rim Basin[J].Journal of Chongqin Technical College,2010,12(1):14-17.
[11]李忠慧,楼一珊,王兆峰,等.地层压力预测技术在准噶尔盆地钻井中的应用[J].天然气工业,2009,29(8):66-68.Li Zhonghui,Lou Yishan,Wang Zhaofeng,et al.Application ofpore pressure prediction in drilling in Zhunger Basin[J].Gasindustry.2009,29(8):66-68.
[12]漆立新,云露.塔河油田奥陶系碳酸盐岩岩溶发育特征与主控因素[J].石油与天然气地质,2010,31(1):1-12.Qi Lixin,Yun Lu.Development characteristics and main con-trolling factors of the Ordovician carbonate karst in Tahe oilfield[J].Oil&Gas Geology,2010,31(1):1-12.
[13]张卫华,何生,郭全仕.地震资料预测压力方法和展望[J].地球物理学进展,2005,20(3):814-817.Zhang Weihua,He Sheng,Guo Quanshi.The methods andheadway for pressure prediction[J].Progress in Geophysics,2005,20(3):814-817.
[14]Sayers C M.An introduction to velocity-based pore-pressure es-timation[J].The Leading Edge,2006,25(12):1496-1499.
[15]Terzaghi K.Theoretical soil mechanics[M].NewYork:JohnWiley and Sons Inc,1943:528.
[16]Gutierrez MA,Braunsdorf N R,Couzens B A.Cali-bration andranking of pore-pressure prediction models[J].The LeadingEdge,2006,25(12):1516-1523.
[17]Fillippone W R.Estimation of formation parameters and theprediction of overpressure from seismic data[C]∥Expandedabstracts of 52nd annual international SEG Meeting,1982:502-503.
[18]金业权,王越之,李自俊.地震资料预测地层压力的研究[J].石油钻探技术,2001,29(3):28-29.Jin Yequan,Wang Yuezhi,Li Zijun.Study on prediction of for-mation pressure with seismic Data[J].PetroleumDrilling Tech-niques,2001,29(3):28-29.
[19]李新宁,李留中,徐向阳,等.异常地层压力的形成原因及预测方法[J].吐哈油气,2006,11(2):120-126.Li Xinyu,Li Liuzhong,Xu Xiangyang,et al.The resons andprediction methods of abnormal pressure of layer[J].Tuha Oil&Gas,2006,11(2):120-126.
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