轻烃参数在石臼坨凸起流体性质评价中的应用
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摘要
地化录井技术的广泛使用,使渤海油田积累了大量的轻烃分析资料,由于对轻烃资料缺乏应用研究,导致轻烃数据中所蕴含的储集层地化信息没有被深度挖掘。为更好地利用轻烃数据资料,丰富井场储集层流体性质评价手段,在调研前人研究成果的基础上,采用聚类分析方法开展轻烃参数应用研究。对轻烃数据研究发现,正庚烷值、异庚烷值、正构烷烃含量等参数可应用于生物降解作用辨识,正构烷烃含量、环烷烃比值、BZ/nC_6、TOL/MCYC_6等参数可应用于储集层含水精细判别。实际应用表明,使用轻烃资料并结合热解气相色谱,可更准确地辨识生物降解作用,尤其是识别受到轻度生物降解的样品或储集层,同时采用轻烃参数解释图板可进一步识别油层和含油水层。
The wide application of geochemical logging technology has accumulated a large number of light hydrocarbon analysis data in Bohai Oilfield.Due to the lack of application research on light hydrocarbon data,the reservoir geochemical information contained in light hydrocarbon data has not been deeply mined.In order to make better use of light hydrocarbon data and enrich the means of evaluating fluid properties of wellsite reservoirs,cluster analysis method was adopted to carry out the application research of light hydrocarbon parameters on the basis of previous research results.According to light hydrocarbon data research,the parameters such as nheptane number,isoheptane number and the content of normal paraffin hydrocarbons can be applied to the identification of biodegradation,and the parameters such as the content of normal paraffin hydrocarbons,cycloparaffinic hydrocarbon ratio,BZ/nC_6 and TOL/MCYC_6 can be applied to the fine discrimination of water cut in reservoirs.The practical application shows that light hydrocarbon data combined with pyrolysis gas chromatography can identify biodegradation accurately,especially samples or reservoirs that suffer from mild biodegradation.At the same time,the light hydrocarbon parameters can be used to further distinguish oil layers from oil-bearing water layers.
The wide application of geochemical logging technology has accumulated a large number of light hydrocarbon analysis data in Bohai Oilfield.Due to the lack of application research on light hydrocarbon data,the reservoir geochemical information contained in light hydrocarbon data has not been deeply mined.In order to make better use of light hydrocarbon data and enrich the means of evaluating fluid properties of wellsite reservoirs,cluster analysis method was adopted to carry out the application research of light hydrocarbon parameters on the basis of previous research results.According to light hydrocarbon data research,the parameters such as nheptane number,isoheptane number and the content of normal paraffin hydrocarbons can be applied to the identification of biodegradation,and the parameters such as the content of normal paraffin hydrocarbons,cycloparaffinic hydrocarbon ratio,BZ/nC_6 and TOL/MCYC_6 can be applied to the fine discrimination of water cut in reservoirs.The practical application shows that light hydrocarbon data combined with pyrolysis gas chromatography can identify biodegradation accurately,especially samples or reservoirs that suffer from mild biodegradation.At the same time,the light hydrocarbon parameters can be used to further distinguish oil layers from oil-bearing water layers.
引文
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[ 2 ] 王应斌,薛永安,王广源,等.渤海海域石臼坨凸起浅层油气成藏特征及勘探启示[J].中国海上油气,2016,27(2):8-15.WANG Yingbin,XUE Yong′an,WANG Guangyuan,et al.Shallow layer hydrocarbon accumulation characteristics and their exploration significances in Shijiutuo uplift,Bohai Sea[J].China Offshore Oil and Gas,2016,27(2):8-15.
[ 3 ] 张友,王清斌,王飞龙,等.渤海海域L16-A和L16-B构造原油生物降解特征及控制因素[J].长江大学学报(自科版),2016,13(29):13-17.ZHANG You,WANG Qingbin,WANG Feilong,et al.Biodegradation characteristics and controlling factors of L16-A and L16-B structure crude oils in Bohai Sea Area[J].Journal of Yangtze University(Natural Science Edition),2016,13(29):13-17.
[ 4 ] 谭世语,魏顺安.化工工艺学[M].重庆:重庆大学出版社,2006.TAN Shiyu,WEI Shun′an.Chemical technology[M].Chongqing:Chongqing University Press,2006.
[ 5 ] 黄吉松,瞿伦泉,周庆华.轻烃分析技术在海拉尔盆地储集层含水性评价中的应用[J].录井工程,2011,22(1):21-24.HUANG Jisong,QU Lunquan,ZHOU Qinghua.The application of light hydrocarbon analysis technology for reservoir water bearing evaluation in Hailar Basin[J].Mud Logging Engineering,2011,22(1):21-24.
[ 6 ] 姜宗恩.饱和烃、轻烃气相色谱数据处理及应用[D].杭州:浙江大学,2010.JIANG Zong′en.Data treating and application for satisfied-hight hydrocarbon gas chromatography[D].Hangzhou:Zhejiang University,2010.
[ 7 ] 郎东升,岳兴举.油气水层定量评价录井新技术[M].北京:石油工业出版社,2004.LANG Dongsheng,YUE Xingju.New technology for quantitative evaluation of oil and gas aquifer[M].Beijing:Petroleum Industry Press,2004.
[ 8 ] 刘丽萍,周海燕,邱红,等.轻烃分析技术在水淹层评价中的应用方法[J].大庆石油地质与开发,2005,24(增刊):118-120.LIU Liping,ZHOU Haiyan,QIU Hong,et al.Application of light hydrocarbon analysis in watered out reservoir evaluation[J].Petroleum Geology & Oilfield Development in Daqing,2005,24(s):118-120.
[ 9 ] 王培荣,徐冠军,张大江,等.常用轻烃参数正、异庚烷值应用中的问题[J].石油勘探与开发,2010,37(1):121-128.WANG Peirong,XU Guanjun,ZHANG Dajiang,et al.Problems with application of heptane and isoheptane values as light hydrocarbon parameters[J].Petroleum Exploration and Development,2010,37(1):121-128.
[10] 郭永华,周心怀,李建平,等.渤海海域新近系稠油油藏原油特征及形成机制[J].石油与天然气地质,2010,31(3):375-380,385.GUO Yonghua,ZHOU Xinhuai,LI Jianping,et al.Crude features and origins of the Neogene heavy oil reservoirs in the Bohai Bay[J].Oil & Gas Geology,2010,31(3):375-380,385.
[11] 牛成民,杜晓峰,邹华耀,等.渤海海域石臼坨凸起油气输导体系与运聚模式[J].中国海上油气,2016,28(3):44-49.NIU Chengmin,DU Xiaofeng,ZOU Huayao,et al.Hydrocarbon transportation system and migration-accumulation pattern in Shijiutuo uplift,Bohai Sea[J].China Offshore Oil and Gas,2016,28(3):44-49.