基于地震波形指示反演的砂砾岩储层预测——以中拐—玛南地区上乌尔禾组为例
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摘要
准噶尔盆地中拐—玛南地区上乌尔禾组为扇三角洲前缘亚相沉积的砂砾岩,具有厚度大、横向变化快、岩石结构成熟度和成分成熟度均低的特点。砂砾岩储层的关键控制因素为泥质含量,根据泥质含量对上乌尔禾组砂砾岩进行划分,可以分为含泥砂砾岩和富泥砂砾岩。利用单一的测井曲线难以有效识别研究区的泥质含量,根据常规测井曲线的响应特征,利用中子测井曲线和声波时差测井曲线的幅度差来拟合砂砾岩储层泥质含量曲线,再经地震波形指示反演来预测砂砾岩优质储层的平面展布,实现了砂砾岩储层的定量化预测。经过钻井证实,这一方法预测结果符合率较高,油气显示良好,展示了本区良好的勘探前景。
The Upper Urho Formation in Zhongguai-Manan area of Junggar Basin mainly develops sandy conglomerate of fan delta front subfacies,with the characteristics of large thickness,rapid lateral variation,low maturity of rock structure and composition. The key controlling factor of glutenite reservoir in the study area is argillaceous content. According to the argillaceous content,the glutenite of Upper Urho Formation can be divided into argillaceous-bearing glutenite and argillaceous rich glutenite. It is difficult to identify the argillaceous content effectively in the normal log curve. According to the response characteristics of conventional log curve,the amplitude difference between CNL log curve and the AC log curve was used to construct the argillaceous content curve of the glutenite reservoir. The plane distribution of high-quality glutenite reservoir was predicted by seismic waveform indicative inversion,realizing the quantitative prediction of glutenite reservoir. The drilling proves that the prediction result accords with high rate and good oil and gas display,showing a good exploration prospect in this area.
The Upper Urho Formation in Zhongguai-Manan area of Junggar Basin mainly develops sandy conglomerate of fan delta front subfacies,with the characteristics of large thickness,rapid lateral variation,low maturity of rock structure and composition. The key controlling factor of glutenite reservoir in the study area is argillaceous content. According to the argillaceous content,the glutenite of Upper Urho Formation can be divided into argillaceous-bearing glutenite and argillaceous rich glutenite. It is difficult to identify the argillaceous content effectively in the normal log curve. According to the response characteristics of conventional log curve,the amplitude difference between CNL log curve and the AC log curve was used to construct the argillaceous content curve of the glutenite reservoir. The plane distribution of high-quality glutenite reservoir was predicted by seismic waveform indicative inversion,realizing the quantitative prediction of glutenite reservoir. The drilling proves that the prediction result accords with high rate and good oil and gas display,showing a good exploration prospect in this area.
引文
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[2]匡立春,唐勇,雷德文,等.准噶尔盆地玛湖凹陷斜坡区三叠系百口泉组扇控大面积岩性油藏勘探实践.中国石油勘探,2014,19(6):14-23.KUANG L C,TANG Y,LEI D W,et al. Exploration of fancontrolled large-area lithologic oil reservoirs of Triassic Baikouquan Formation in slope zone of Mahu Depression in Junggar Basin. China Petroleum Exploration,2014,19(6):14-23.
[3]陈刚强,安志渊,阿布力米提,等.玛湖凹陷及其周缘石炭—二叠系油气勘探前景.新疆石油地质,2014,35(3):259-263.CHEN G Q,AN Z Y,ABULIMITI,et al. Petroleum exploration prospects of Carboniferous-Permian in peripheral Mahu Sag,Junggar Basin. Xinjiang Petroleum Geology,2014,35(3):259-263.
[4]邹妞妞,张大权,钱海涛,等.准噶尔盆地玛北斜坡区扇三角洲砂砾岩储层主控因素.岩性油气藏,2016,28(4):24-33.ZOU N N,ZHANG D Q,QIAN H T,et al. Main controlling factors of glutenite reservoir of fan delta in Mabei slope,Junggar Basin. Lithologic Reservoirs,2016,28(4):24-33.
[5]于兴河,瞿建华,谭程鹏,等.玛湖凹陷百口泉组扇三角洲砾岩岩相及成因模式.新疆石油地质,2014,35(6):619-627.YU X H,QU J H,TAN C P,et al. Conglomerate lithofacies and origin models of fan deltas of Baikouquan Formation in Mahu Sag,Junggar Basin. Xinjiang Petroleum Geology,2014,35(6):619-627.
[6]曹茜,王志章,王野,等.砂砾岩储层分布非均质性和质量非均质性研究:以克拉玛依油田五2东区克上组为例.岩性油气藏,2018,30(2):129-138.CAO Q,WANG Z Z,WANG Y,et al. Distribution and quality heterogeneity of conglomerate reservoir:a case from upper Karamay Formation in eastern block Wu 2,Karamay Oilfield. Lithologic Reservoirs,2018,30(2):129-138.
[7]刘书会.薄层属性分析中存在的问题及解决方法:以东营凹陷梁108地区滩坝砂岩为例.油气地质与采收率,2006,13(2):56-58.LIU S H. Problems in thin-layer attribute analysis and solved methods:a case study in beach bar sandstone in Liang 108 area of Dongying Sag. Petroleum Geology and Recovery Efficiency,2006,13(2):56-58.
[8]张帅,祝有海,刘豪,等.地震波形分类技术在浅水湖盆砂体预测中的应用.地球物理学进展,2013,28(5):2618-2625.ZHANG S,ZHU Y H,LIU H,et al. The application of seismic waveform classification technique for sandstone prediction in shallow-water basin. Progress in Geophysics,2013,28(5):2618-2625.
[9]张闻亭,潘树新,刘震华,等.地震沉积学在坳陷湖盆滩坝砂体预测中的应用:以酒西盆地Y区块间泉子段为例.岩性油气藏,2016,28(6):109-116.ZHANG W T,PAN S X,LIU Z H,et al. Application of seismic sedimentology to prediction of beach and bar sand bodies in lacustrine basin:a case study of Juanquanzi member in Y block,Jiuxi Basin. Lithologic Reservoirs,2016,28(6):109-116.
[10]张宏兵,杨长春.正则参数控制下的波阻抗约束反演.地球物理学报,2003,46(6):827-834.ZHANG H B,YANG C C. A constrained impedance inversion method controlled by regularized. Chinese Journal of Geophysics,2003,46(6):827-834.
[11]黄捍东,张如伟,魏世平.地震非线性随机反演方法在陆相薄砂岩储层预测中的应用.石油学报,2009,30(3):386-390.HUANG H D,ZHANG R W,WEI S P. Research on application of seismic nonlinear random inversion to reservoirs prediction in the thin sandstone of continental deposits. Acta Petrolei Sinica,2009,30(3):386-390.
[12]王香文,刘红,滕彬彬,等.地质统计学反演技术在薄储层预测中的应用.石油与天然气地质,2012,33(5):730-735.WANG X W,LIU H,TENG B B,et al. Application of geostatistical inversion to thin reservoir prediction. Oil&Gas Geology,2012,33(5):730-735.
[13]陈勇,贺陆明,程志国,等.准噶尔盆地玛湖西斜坡优质砂砾岩储层叠前地震预测研究与应用.新疆地质,2016,34(2):291-296.CHEN Y,HE L M,CHENG Z G,et al. The research and application of prestack seismic prediction in high quality glutenite reservoir in the western Mahu Slope of Junggar Basin. Xinjiang Geology,2016,34(2):291-296.
[14]杜伟维,金兆军,邸永香.地震波形指示反演及特征参数模拟在薄储层预测中的应用.工程地球物理学报,2017,14(1):56-61.DU W W,JIN Z J,DI Y X. The application of seismic waveform indicator inversion and characteristic parameter simulation to thin reservoir prediction. Chinese Journal of Engineering Geophysics,2017,14(1):56-61.
[15]高君,毕建军,赵海山,等.地震波形指示反演薄储层预测技术及其应用.地球物理学进展,2017,32(1):142-145.GAO J,BI J J,ZHAO H S,et al. Seismic waveform inversion technology and application of thinner reservoir prediction. Progress in Geophysics,2017,32(1):142-145.
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[17]王贤,唐建华,毕建军,等.地震波形指示反演在石南地区薄储层预测中的应用.新疆石油天然气,2017,13(3):1-5.WANG X,TANG J H,BI J J,et al. Application of seismic motion inversion to prediction of thin reservoir in Shinan area.Xinjiang Oil&Gas,2017,13(3):1-5.
[18]孟祥超,徐洋,韩守华,等.中拐地区上乌尔禾组浊沸石展布规律及优质储层预测.东北石油大学学报,2013,37(1):16-23.MENG X C,XU Y,HAN S H,et al. Distribution rule of Laumontite and favorable reservoir forecast of P3w in Zhongguai Region. Journal of Northeast Petroleum University,2013,37(1):16-23.
[19]史基安,何周,丁超,等.准噶尔盆地西北缘克百地区二叠系沉积特征及沉积模式.沉积学报,2010,28(5):962-968.SHI J A,HE Z,DING C,et al. Sedimentary characteristics and model of Permian system in Kebai area in the northwestern margin of Junggar Basin. Acta Sedimentologica Sinica,2010,28(5):962-968.
[20]单祥,邹志文,孟祥超,等.准噶尔盆地玛湖地区三叠系百口泉组物源分析.沉积学报,2016,34(5):930-939.SHAN X,ZOU Z W,MENG X C,et al. Provenance Analysis of Triassic Baikouquan Formation in the area around Mahu Depression,Junggar Basin. Aata Sedimentological Sinica,2016,34(5):930-939.
[21]邹志文,李辉,徐洋,等.准噶尔盆地玛湖凹陷下三叠统百口泉组扇三角洲沉积特征.地质科技情报,2015,34(2):20-26.ZOU Z W,LI H,XU Y,et al. Sedimentary characteristics of the Baikouquan Formation,Lower Triassic in the Mahu Depression,Junggar Basin. Geological Science and Technology Information,2015,34(2):20-26.
[22]张有平,盛世锋,高祥录.玛湖凹陷玛2井区下乌尔禾组扇三角洲沉积及有利储层分布.岩性油气藏,2015,27(5):204-210.ZHANG Y P,SHENG S F,GAO X L. Fan delta sedimentation and favorable reservoir distribution of the lower Urho Formation in Ma 2 well block of Mahu Depression. Lithologic Reservoirs,2015,27(5):204-210.
[23]庞德新.砂砾岩储层成因差异及其对储集物性的控制效应:以玛湖凹陷玛2井区下乌尔禾组为例.岩性油气藏,2015,27(5):149-154.PANG D X. Sedimentary genesis of sand-conglomerate reservoir and its control effect on reservoir properties:a case study of the lower Urho Formation in Ma 2 well block of Mahu Depression. Lithologic Reservoirs,2015,27(5):149-154.
[24]王晓光,谭锋奇,吕建荣,等.克拉玛依油田七东1区砾岩油藏泥质含量测井解释方法.测井技术,2017,41(1):64-70.WANG X G,TAN F Q,LYU J R,et al. Log interpretation method of shale content for conglomerate reservoir,No. 1 area of east7 th block in Karamay Oilfield. Well Logging Technology,2017,41(1):64-70.
[25]尉中良,邹长春.地球物理测井.北京:地质出版社,2005:56-57.WEI Z L,ZOU C C. Geophysical Logging. Beijing:Geological Publishing House,2005:56-57.