鄂尔多斯盆地西南部地区上古生界砂体地震预测及勘探新突破
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摘要
鄂尔多斯盆地西南部地区天然气勘探程度较低,2004年ZT1井在山西组山1段试气获工业气流,揭示上古生界具备良好的勘探前景.上古生界天然气成藏特征研究表明,二叠系发育西南物源石英砂岩储集体,主要含气层系是山西组山1段、石盒子组盒8段,砂体厚度相对较薄,埋深超过4000m.区内储层普遍致密,局部发育相对高渗层段,与煤系烃源岩配置良好,是形成致密砂岩气藏的有利区带.本文应用地震勘探攻关成果,建立主力砂体地震响应模式,进一步落实了山1、盒8砂体的展布,结合探井钻探效果,优选了有利钻探目标.在试气方法上引入体积压裂理念,QT1井试气获工业气流,勘探取得新突破.对研究区天然气成藏条件的分析、主力砂体地震预测模式及试气工艺等成功经验的总结,对该区天然气勘探的深入开展具有重要的指导意义.
The degree of gas exploration in the southwest Ordos basin is relatively low,however,In 2004,the commercial gas flow in well ZT1 tested in Shan1 segment of Shanxi Formation shows that the Upper Paleozoic gas exploration potential is pretty good.Analysis of Upper Paleozoic gas reservoir-forming was made,it is indicated that upper Paleozoic Permian developed southwestern provenance quartz sandstones reservoir body,and main gas bearing formations are Shan1 segment of Shanxi Formation and He8 segment of Shihezi Formation.The thickness of sand body is relatively thin,and whose buried depth beyond 4000m.Gas reservoirs are generally tight in the area,which locally develop high-permeability segments,and match well with coal-bearing source rock,which is the favorable zone for forming tight sandstone gas reservoirs.Based on recent years seismic prospecting achievements,we build the sand body seismic response modeling,the distribution of He8 and Shan1 sand body is determined and favorable drilling target is optimized.Introducing volume fracturing idea in gas well-testing technique,the commercial gas flow in well QT1 tested,gas exploration has achieved new breakthrough.Analysis on gas reservoir-forming,sand body seismic response modeling and experiences of well-tseting technique has guiding significance for gas exploration further developing in the area.
The degree of gas exploration in the southwest Ordos basin is relatively low,however,In 2004,the commercial gas flow in well ZT1 tested in Shan1 segment of Shanxi Formation shows that the Upper Paleozoic gas exploration potential is pretty good.Analysis of Upper Paleozoic gas reservoir-forming was made,it is indicated that upper Paleozoic Permian developed southwestern provenance quartz sandstones reservoir body,and main gas bearing formations are Shan1 segment of Shanxi Formation and He8 segment of Shihezi Formation.The thickness of sand body is relatively thin,and whose buried depth beyond 4000m.Gas reservoirs are generally tight in the area,which locally develop high-permeability segments,and match well with coal-bearing source rock,which is the favorable zone for forming tight sandstone gas reservoirs.Based on recent years seismic prospecting achievements,we build the sand body seismic response modeling,the distribution of He8 and Shan1 sand body is determined and favorable drilling target is optimized.Introducing volume fracturing idea in gas well-testing technique,the commercial gas flow in well QT1 tested,gas exploration has achieved new breakthrough.Analysis on gas reservoir-forming,sand body seismic response modeling and experiences of well-tseting technique has guiding significance for gas exploration further developing in the area.
引文
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[9]冯志强,刘嘉麒,王璞珺,等.油气勘探新领域:火山岩油气藏———松辽盆地大型火山岩气田发现的启示[J].地球物理学报,2011,54(2):269-279.Feng Z Q,Liu J Q,Wang P J,et al.New oil and gasexploration field:volcanic hydrocarbon reservoirs———Enlightenment from the discovery of the large gas field inSongliao basin[J].Chinese J.Geophys.(in Chinese),2011,54(2):269-279.
[10]杨辉,文百红,戴晓峰,等.火山岩油气藏重磁电震综合预测方法及应用[J].地球物理学报,2011,54(2):286-293.Yang H,Wen B H,Dai X F,et al.Comprehensivepredication of hydrocarbon deposits in volcanic rock bygravity,magnetic,electrical and seismic data and itsapplication[J].Chinese J.Geophys.(in Chinese),2011,54(2):286-293.
[11]陈刚,丁超,徐黎明,等.鄂尔多斯盆地东缘紫金山侵入岩热演化史与隆升过程分析[J].地球物理学报,2012,55(11):3731-3741.Chen G,Ding C,Xu L M,et al.Analysis on the thermalhistory and uplift process of Zijinshan intrusive complex in theeastern Ordos basin[J].Chinese J.Geophys.(in Chinese),2012,55(11):3731-3741.
[12]郭英海,刘焕杰,权彪,等.鄂尔多斯地区晚古生代沉积体系及古地理演化[J].沉积学报,1998,16(3):44-51.Guo Y H,Liu H J,Quan B,et al.Late Paleozoicsedimentary system and Paleogeographic evolution of Ordosarea[J].Acta Sedimentologica Sinica(in Chinese),1998,16(3):44-51.
[13]郭英海,刘焕杰.陕甘宁地区晚古生代沉积体系[J].古地理学报,2000,2(1):19-30.Guo Y H,Liu H J.The Late Palaeozoic depositional systemsof Shaanxi-Gansu-Ningxia area[J].Journal ofPalaeogeography(in Chinese),2000,2(1):19-30.
[14]朱筱敏,康安,王贵文,等.鄂尔多斯盆地西南部上古生界层序地层和沉积体系特征[J].石油实验地质,2002,24(4):327-333.Zhu X M,Kang A,Wang G W,et al.The Upper Paleozoicsequence stratigraphic and sedimentary system characteristicsof the southwest Ordos basin[J].Petroleum Geology andExperiment(in Chinese),2002,24(4):327-333.
[15]杨仁超,韩作振,李文厚,等.鄂尔多斯地区二叠系三角洲沉积特征及其模式[J].西北大学学报(自然科学版),2004,34(3):340-344.Yang R C,Han Z Z,Li W H,et al.Sedimentarycharacteristics and models of deltas from Permian system inOrdos area[J].Journal Northwest University(NaturalScience Edition)(in Chinese),2004,34(3):340-344.
[16]陈孟晋,汪泽成,郭彦如,等.鄂尔多斯盆地南部晚古生代沉积特征与天然气勘探潜力[J].石油勘探与开发,2006,33(1):1-5.Chen M J,Wang Z C,Guo Y R,et al.Late Paleozoicsedimentary systems and gas potential in the south Ordosbasin[J].Petroluem Exploration and Development(inChinese),2006,33(1):1-5.
[17]张春贺,乔德武,李世臻,等.复杂地区油气地球物理勘探技术集成[J].地球物理学报,2011,54(2):374-387.Zhang C H,Qiao D W,Li S Z,et al.Integration of oil andgas geophysical exploration technologies for geologicallycomplex areas[J].Chinese J.Geophys.(in Chinese),2011,54(2):374-387.
[18]杜中东,邓述全,汪兴业,等.黄土塬非纵地震勘探技术及其应用[J].石油地球物理勘探,2010,45(S1):35-39.Du Z D,Deng S Q,Wang X Y et al.Off-line seismicexploration and its application in loess plateau area[J].OilGeophysical Prospecting(in Chinese),2010,45(Supplement1):35-39.
[19]高利东,赵玉华,张克诚,等.非纵地震勘探技术及应用[J].石油化工应用,2011,30(5):4-6.Gao L D,Zhao Y H,Zhang K C,et al.The off-line seismicexploration technique and application[J].PetrochemicalIndustry Application(in Chinese),2011,30(5):4-6.
[20]苑书金.叠前地震反演技术的进展及其在岩性油气藏勘探中的应用[J].地球物理学进展,2007,22(3):879-886.Yuan S J.Progress of pre-stack inversion and application inexploration of the lithological reservoirs[J].Progress inGeophysics(in Chinese),2007,22(3):879-886.
[21]秦绪英,肖立志,张元中.鄂尔多斯盆地天然气有效储层识别与评价方法[J].地球物理学进展,2005,20(4):1099-1107.Qin X Y,Xiao L Z,Zhang Y Z.Methods of natural gasreservoir identification and evaluation of Erdos Basin[J].Progress in Geophysics(in Chinese),2005,20(4):1099-1107.
[22]李美,赵玉华,刘静,等.苏里格气田地震资料叠前保幅去噪技术研究[J].地球物理学进展,2012,27(2):680-687.Li M,Zhao Y H,Liu J,et al.Study of the amplitudepreserved denoising techology for prestack seismic data inSulige Gasfield[J].Progress in Geophysics(in Chinese),2012,27(2):680-687.
[23]张广智,刘洪,印兴耀.地震解释中声波测井资料的整理方法研究[J].地球物理学进展,2011,26(6):2055-2063.Zhang G Z,Liu H,Yin X Y.Collation method research ofacoustic logging data in seismic interpretation[J].Progress InGeophysics(in Chinese),2011,26(6):2055-2063.
[24]陈作,薛承瑾,蒋廷学,等.页岩气井体积压裂技术在我国的应用建议[J].天然气工业,2010,30(10):30-32.Chen Z,Xue C J,Jiang T X,et al.Proposals for theapplication of fracturing by stimulated reservoir volume(SRV)in shale gas wells in China[J].Natural Gas Industry(in Chinese),2010,30(10):30-32.
[2]汪正江,张锦泉,陈洪德.鄂尔多斯盆地晚古生代陆源碎屑沉积源区分析[J].成都理工学院学报,2001,28(1):7-12.Wang Z J,Zhang J Q,Chen H D.Study of the dispositionalprovenace of the terrigenous deteritus in Ordos basin in latePaleozoic era[J].Journal of Chengdu University ofTechnology(in Chinese),2001,28(1):7-12.
[3]赵格红,刘池洋.物源分析方法及研究进展[J].沉积学报,2003,21(3):409-415.Zhao H G,Liu C Y.Approaches and prospects of provenanceanalysis[J].Acta Sedimentologica Sinica(in Chinese),2003,21(3):409-415.
[4]陈全红,李文厚,王亚红,等.鄂尔多斯盆地西南部晚古生代早—中期物源分析[J].现代地质,2006,20(4):628-634.Chen Q H,Li W H,Wang Y H,et al.The analysis ofsediment provenance in early-middle period of late Paleozoic inthe southwest of Ordos basin[J].Geoscience(in Chinese),2006,20(4):628-634.
[5]刘锐娥,卫孝峰,王亚丽,等.泥质岩稀土元素地球化学特征在物源分析中的意义—以鄂尔多斯盆地上古生界为例[J].天然气地球科学,2005,15(6):788-791.Liu R E,Wei X F,Wang Y L,et al.The geochemicalcharacteristics of rare earth elements of the shale rock in thegeologic signification of the analysis of the sedimentaryprovenance:an example in the Upper Palaeozoic in the Ordosbasin[J].Natural Gas Geoscience(in Chinese),2005,15(6):788-791.
[6]杨俊杰.鄂尔多斯盆地构造演化与油气分布规律[M].北京:石油工业出版社,2002:23-27.Yang J J.Tectonic evolution and oil-gas reservoirs distributionin Ordos basin(in Chinese)[M].Beijing:Petroleum IndustryPress,2002:23-27.
[7]邓军,王庆飞,黄定华,等.鄂尔多斯盆地基底演化及其对盖层控制作用[J].地学前缘,2005,12(3):91-99.Deng J,Wang Q F,Huang D H,et al.Basement evolution ofthe Ordos basin and its constraint on cap rock[J].EarthScience Frontiers(in Chinese),2005,12(3):91-99.
[8]肖建新,孙粉锦,何乃祥,等.鄂尔多斯盆地二叠系山西组及下石盒子组盒8段南北物源沉积汇水区与古地理[J].古地理学报,2008,10(4):341-354.Xiao J X,Sun F J,He N X,et al.Permian Shanxi Formationand Member 8 of Xiashihezi Formation in Ordos basin:Palaeogeography and catchment area for sediments derivedfrom north and south provenances[J].Journal ofPalaeogeography(in Chinese),2008,10(4):341-354.
[9]冯志强,刘嘉麒,王璞珺,等.油气勘探新领域:火山岩油气藏———松辽盆地大型火山岩气田发现的启示[J].地球物理学报,2011,54(2):269-279.Feng Z Q,Liu J Q,Wang P J,et al.New oil and gasexploration field:volcanic hydrocarbon reservoirs———Enlightenment from the discovery of the large gas field inSongliao basin[J].Chinese J.Geophys.(in Chinese),2011,54(2):269-279.
[10]杨辉,文百红,戴晓峰,等.火山岩油气藏重磁电震综合预测方法及应用[J].地球物理学报,2011,54(2):286-293.Yang H,Wen B H,Dai X F,et al.Comprehensivepredication of hydrocarbon deposits in volcanic rock bygravity,magnetic,electrical and seismic data and itsapplication[J].Chinese J.Geophys.(in Chinese),2011,54(2):286-293.
[11]陈刚,丁超,徐黎明,等.鄂尔多斯盆地东缘紫金山侵入岩热演化史与隆升过程分析[J].地球物理学报,2012,55(11):3731-3741.Chen G,Ding C,Xu L M,et al.Analysis on the thermalhistory and uplift process of Zijinshan intrusive complex in theeastern Ordos basin[J].Chinese J.Geophys.(in Chinese),2012,55(11):3731-3741.
[12]郭英海,刘焕杰,权彪,等.鄂尔多斯地区晚古生代沉积体系及古地理演化[J].沉积学报,1998,16(3):44-51.Guo Y H,Liu H J,Quan B,et al.Late Paleozoicsedimentary system and Paleogeographic evolution of Ordosarea[J].Acta Sedimentologica Sinica(in Chinese),1998,16(3):44-51.
[13]郭英海,刘焕杰.陕甘宁地区晚古生代沉积体系[J].古地理学报,2000,2(1):19-30.Guo Y H,Liu H J.The Late Palaeozoic depositional systemsof Shaanxi-Gansu-Ningxia area[J].Journal ofPalaeogeography(in Chinese),2000,2(1):19-30.
[14]朱筱敏,康安,王贵文,等.鄂尔多斯盆地西南部上古生界层序地层和沉积体系特征[J].石油实验地质,2002,24(4):327-333.Zhu X M,Kang A,Wang G W,et al.The Upper Paleozoicsequence stratigraphic and sedimentary system characteristicsof the southwest Ordos basin[J].Petroleum Geology andExperiment(in Chinese),2002,24(4):327-333.
[15]杨仁超,韩作振,李文厚,等.鄂尔多斯地区二叠系三角洲沉积特征及其模式[J].西北大学学报(自然科学版),2004,34(3):340-344.Yang R C,Han Z Z,Li W H,et al.Sedimentarycharacteristics and models of deltas from Permian system inOrdos area[J].Journal Northwest University(NaturalScience Edition)(in Chinese),2004,34(3):340-344.
[16]陈孟晋,汪泽成,郭彦如,等.鄂尔多斯盆地南部晚古生代沉积特征与天然气勘探潜力[J].石油勘探与开发,2006,33(1):1-5.Chen M J,Wang Z C,Guo Y R,et al.Late Paleozoicsedimentary systems and gas potential in the south Ordosbasin[J].Petroluem Exploration and Development(inChinese),2006,33(1):1-5.
[17]张春贺,乔德武,李世臻,等.复杂地区油气地球物理勘探技术集成[J].地球物理学报,2011,54(2):374-387.Zhang C H,Qiao D W,Li S Z,et al.Integration of oil andgas geophysical exploration technologies for geologicallycomplex areas[J].Chinese J.Geophys.(in Chinese),2011,54(2):374-387.
[18]杜中东,邓述全,汪兴业,等.黄土塬非纵地震勘探技术及其应用[J].石油地球物理勘探,2010,45(S1):35-39.Du Z D,Deng S Q,Wang X Y et al.Off-line seismicexploration and its application in loess plateau area[J].OilGeophysical Prospecting(in Chinese),2010,45(Supplement1):35-39.
[19]高利东,赵玉华,张克诚,等.非纵地震勘探技术及应用[J].石油化工应用,2011,30(5):4-6.Gao L D,Zhao Y H,Zhang K C,et al.The off-line seismicexploration technique and application[J].PetrochemicalIndustry Application(in Chinese),2011,30(5):4-6.
[20]苑书金.叠前地震反演技术的进展及其在岩性油气藏勘探中的应用[J].地球物理学进展,2007,22(3):879-886.Yuan S J.Progress of pre-stack inversion and application inexploration of the lithological reservoirs[J].Progress inGeophysics(in Chinese),2007,22(3):879-886.
[21]秦绪英,肖立志,张元中.鄂尔多斯盆地天然气有效储层识别与评价方法[J].地球物理学进展,2005,20(4):1099-1107.Qin X Y,Xiao L Z,Zhang Y Z.Methods of natural gasreservoir identification and evaluation of Erdos Basin[J].Progress in Geophysics(in Chinese),2005,20(4):1099-1107.
[22]李美,赵玉华,刘静,等.苏里格气田地震资料叠前保幅去噪技术研究[J].地球物理学进展,2012,27(2):680-687.Li M,Zhao Y H,Liu J,et al.Study of the amplitudepreserved denoising techology for prestack seismic data inSulige Gasfield[J].Progress in Geophysics(in Chinese),2012,27(2):680-687.
[23]张广智,刘洪,印兴耀.地震解释中声波测井资料的整理方法研究[J].地球物理学进展,2011,26(6):2055-2063.Zhang G Z,Liu H,Yin X Y.Collation method research ofacoustic logging data in seismic interpretation[J].Progress InGeophysics(in Chinese),2011,26(6):2055-2063.
[24]陈作,薛承瑾,蒋廷学,等.页岩气井体积压裂技术在我国的应用建议[J].天然气工业,2010,30(10):30-32.Chen Z,Xue C J,Jiang T X,et al.Proposals for theapplication of fracturing by stimulated reservoir volume(SRV)in shale gas wells in China[J].Natural Gas Industry(in Chinese),2010,30(10):30-32.
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