汶川地震断裂带科学钻探WFSD-1孔成像测井岩心空间归位
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摘要
2008年汶川大地震发生后,我国迅速实施了汶川地震断裂带科学钻探项目(WFSD).钻井取心是研究地下情况的直接资料,但取心时通常采用非定向取心技术,缺少准确的深度和方位信息,需要利用测井资料对其进行深度和方向的还原,即岩心空间归位.针对汶川地震断裂带科学钻探项目一号孔(WFSD-1孔),利用成像-岩心扫描图像综合处理软件(CCSDLogCore)精确和直观的完成了2055块岩心图像的空间归位.对归位成果进行了分析,发现随着钻孔深度的增加,岩心深度误差增大,说明了归位结果符合实际情况,为下一步地质构造分析奠定了基础,文章还总结了归位过程中遇到的问题并提出了建议.
After the Wenchuan earthquake in 2008,the government of our country rapidly implemented the Wenchuan Earthquake Fault Zone Scientific Drilling Project(WFSD).Form drilling cores can obtain the direct data of the underground.This is very important for scientific drilling researches.But the original depths and orientations of cores cannot be positive,so core spatial position restoring is needed.By being processed by imaging log-core scanning picture processing integrated software(CCSDLogCore),the spatial positions of 2055 pieces of core scanning images collected from No.1 borehole of Wenchuan Earthquake Fault Zone Scientific Drilling(WFSD-1) are restored precisely and visually.By analyzing the results of the restoring work,it is found that the depth error of the cores increased with the depth of the hole,and that confirmed the results accord the reality.These results lay a good foundation for the following geological structure analysis;the problems during the work are summed up and suggestions are presented as follows: it's better to do the acoustic imaging logging and the resistivity imaging logging at the same hole so that we can obtain better information about the wall of the borehole;we should also avoid the problems caused by human during the preliminary work of position restoring before we can start the accurate and efficient work of core position restoring.
After the Wenchuan earthquake in 2008,the government of our country rapidly implemented the Wenchuan Earthquake Fault Zone Scientific Drilling Project(WFSD).Form drilling cores can obtain the direct data of the underground.This is very important for scientific drilling researches.But the original depths and orientations of cores cannot be positive,so core spatial position restoring is needed.By being processed by imaging log-core scanning picture processing integrated software(CCSDLogCore),the spatial positions of 2055 pieces of core scanning images collected from No.1 borehole of Wenchuan Earthquake Fault Zone Scientific Drilling(WFSD-1) are restored precisely and visually.By analyzing the results of the restoring work,it is found that the depth error of the cores increased with the depth of the hole,and that confirmed the results accord the reality.These results lay a good foundation for the following geological structure analysis;the problems during the work are summed up and suggestions are presented as follows: it's better to do the acoustic imaging logging and the resistivity imaging logging at the same hole so that we can obtain better information about the wall of the borehole;we should also avoid the problems caused by human during the preliminary work of position restoring before we can start the accurate and efficient work of core position restoring.
引文
[1]许志琴,杨经绥,张泽明等.中国大陆科学钻探终孔及研究进展.中国地质,2005,32(2):177-183.Xu Z Q,Yang J S,Zhang Z M,et al.Completion andachievement of the Chinese Continental Scientific Drilling(CCSD)Project.Geology in China(in Chinese),2005,32(2):177-183.
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[10]杨文采,朱光明,杨振华等.中国大陆科学钻探孔区的数字三分量反射地震调查.地球物理学报,2007,50(3):780-790.Yang W C,Zhu G M,Yang Z H,et al.Three-componentseismic profiling at the Chinese Continental Scientific Drillingsite.Chinese J.Geophys.(in Chinese),2007,50(3):780-790
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[12]李洪奇,李莉,谢绍龙.基于粒子群算法的声波测井岩心自动归位.计算机工程,2009,35(3):217-221Li H Q,Li L,Xie S L.Sonic logging automatic core locationbased on PSO.Computer Engineering(in Chinese),2009,35(3):217-221.
[13]王艳琴,杨富周,安明泉等.岩心地面伽马测试系统及其在岩心归位中的应用.石油仪器,2003,17(2):18-19Wang Y Q,Yang F Z,An M Q,et al.Core gramma testingsystem and its application to core location.PetroleumInstruments,2003,17(2):18-19.
[14]吴兴能,刘瑞林.基于Surfer的FMI资料岩心归位及归位效果评价方法.内蒙古石油化工,2006,32(10):121-123.Wu X N,Liu R L.Core location using FMI data based onSurfer and the evaluation methods of its effects.InnerMongulia Petrochemical Industry(in Chinese),2006,32(10):121-123.
[15]牛一雄,潘和平,王文先等.中国大陆科学钻探主孔(101-2000m)测井岩心空间归位.地球科学——中国地质大学学报,2005,30(增刊):102-107.Niu Y X,Pan H P,Wang W X,et al.Core spatial positionrestoring of CCSD-MH(101-2000m)with Borehole LoggingData.Earth Science—Journal of China University ofGeosciences(in Chinese),2005,30(Suppl.):102-107.
[16]Zou C C,Pan L Z,Niu Y X,et al.Well Log Image for CoreLocation and Reorientation:Application to the Main Drillholeof the Chinese Continental Scientific Drilling Project.Journalof China University of Geosciences,2007,18(Special Issue):1-3.
[17]Dralex J K.Borehole logging(measurement principle,tools,logging operation,evaluation and interpretation of results).Germany:Cell,2000:1-191.
[18]Kessels W,Kuck J.Computer-aided matching of plane corestructures with borehole measurements for core orientation.Scientific Drilling,1992,(3):225-238.
[19]Zou C C,Shi G,Pan L Z.Acoustic borehole images forfracture extraction and analysis in second pre-pilot Drillhole ofCCSD.Journal of China University of Geosciences,2004,15(1):123-127.
[2]牛一雄,潘和平,王文先等.中国大陆科学钻探主孔(0～2000m)地球物理测井.岩石学报,2004,20(1):165-178.Niu Y X,Pan H P,Wang W X,et al.Geophysical welllogging in main hole(0-2000m)of Chinese ContinentalScientific Drilling.Acta Petrologica Sinica(in Chinese),2004,20(1):165-178.
[3]王连捷,崔军文,张晓卫等.中国大陆科学钻主孔现今地应力状态.地球科学——中国地质大学学报,2006,31(4):505-512.Wang L J,Cui J W,Zhang X W,et al.In-situ stress state inthe main borehole of the Chinese continental scientific drilling.Earth Science—Journal of China University of Geosciences(inChinese),2006,31(4):505-512.
[4]汪集旸,胡圣标,程本合等.中国大陆科学钻探靶区深部温度预测.地球物理学报,2001,44(6):774-782.Wang J Y,Hu S B,Cheng B H,et al.Predication of the deeptemperature in the target area of the China ContinentalScientific Drilling.Chinese Journal of Geophysics(inChinese),2001,44(6):774-782.
[5]何丽娟,胡圣标,杨文采等.中国大陆科学钻探主孔揭示的大陆地壳生热模型.岩石学报,2006,22(11):2808-2814.He L J,Hu S B,Yang W C,et al.Heating generation modelfor the continental crust based on the main hole of the ChineseContinental Scientific Drilling Project.Acta Petrologica Sinica(in Chinese),2006,22(11):2808-2814.
[6]杨文采,杨午阳,程振炎.中国大陆科学钻探孔区三维地震资料的初步解释.岩石学报,2004,20(1):127-138.Yang W C,Yang W Y,Cheng Z Y.Interpretation of 3Dseismic renection data in the Chinese Continental ScientificDrilling site.Acta Petrologica Sinica(in Chinese),2004,20(1):127-138.
[7]杨文采,杨午阳,程振炎.中国大陆科学钻探孔区的地震波速模型.地球物理学报,2006,49(2):477-489Yang W C,Yang W Y,Cheng Z Y.Seismic velocity model ofthe Chinese continental scientific drilling site.Chinese J.Geophys.(in Chinese),2006,49(2):477-489.
[8]杨文采,刘光林,杨锴等.中国大陆科学钻探孔区全观式三维地震采集.地球物理学报,2006,49(3):735-744.Yang W C,Liu G L,Yang K,et al.All-laid-out three-dimensional seismic survey at the Chinese ContinentalScientific Drilling site.Chinese J.Geophys.(in Chinese),2006,49(3):735-744.
[9]杨文采,杨午阳,程振炎.中国大陆科学钻探孔区地震反射的标定.地球物理学报,2006,49(6):1682-1692.Yang W C,Yang W Y,Cheng Z Y.Calibration of seismicreflectors at the Chinese Continental Scientific Drilling site.Chinese J.Geophys.(in Chinese),2006,49(6):1682-1692.
[10]杨文采,朱光明,杨振华等.中国大陆科学钻探孔区的数字三分量反射地震调查.地球物理学报,2007,50(3):780-790.Yang W C,Zhu G M,Yang Z H,et al.Three-componentseismic profiling at the Chinese Continental Scientific Drillingsite.Chinese J.Geophys.(in Chinese),2007,50(3):780-790
[11]许志琴,李海兵,吴忠良.汶川地震和科学钻探.地质学报,2008,82(12):1613-1622Xu Z Q,Li H B,Wu Z L.Wenchuan earthquake andscientific drilling.Acta Geologica Sinica(in Chinese),2008,82(12):1613-1622.
[12]李洪奇,李莉,谢绍龙.基于粒子群算法的声波测井岩心自动归位.计算机工程,2009,35(3):217-221Li H Q,Li L,Xie S L.Sonic logging automatic core locationbased on PSO.Computer Engineering(in Chinese),2009,35(3):217-221.
[13]王艳琴,杨富周,安明泉等.岩心地面伽马测试系统及其在岩心归位中的应用.石油仪器,2003,17(2):18-19Wang Y Q,Yang F Z,An M Q,et al.Core gramma testingsystem and its application to core location.PetroleumInstruments,2003,17(2):18-19.
[14]吴兴能,刘瑞林.基于Surfer的FMI资料岩心归位及归位效果评价方法.内蒙古石油化工,2006,32(10):121-123.Wu X N,Liu R L.Core location using FMI data based onSurfer and the evaluation methods of its effects.InnerMongulia Petrochemical Industry(in Chinese),2006,32(10):121-123.
[15]牛一雄,潘和平,王文先等.中国大陆科学钻探主孔(101-2000m)测井岩心空间归位.地球科学——中国地质大学学报,2005,30(增刊):102-107.Niu Y X,Pan H P,Wang W X,et al.Core spatial positionrestoring of CCSD-MH(101-2000m)with Borehole LoggingData.Earth Science—Journal of China University ofGeosciences(in Chinese),2005,30(Suppl.):102-107.
[16]Zou C C,Pan L Z,Niu Y X,et al.Well Log Image for CoreLocation and Reorientation:Application to the Main Drillholeof the Chinese Continental Scientific Drilling Project.Journalof China University of Geosciences,2007,18(Special Issue):1-3.
[17]Dralex J K.Borehole logging(measurement principle,tools,logging operation,evaluation and interpretation of results).Germany:Cell,2000:1-191.
[18]Kessels W,Kuck J.Computer-aided matching of plane corestructures with borehole measurements for core orientation.Scientific Drilling,1992,(3):225-238.
[19]Zou C C,Shi G,Pan L Z.Acoustic borehole images forfracture extraction and analysis in second pre-pilot Drillhole ofCCSD.Journal of China University of Geosciences,2004,15(1):123-127.
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