大牛地气田二叠系下石盒子组致密砂岩储层含气性识别因子研究
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摘要
鄂尔多斯盆地大牛地气田二叠系下石盒子组致密砂岩储层孔隙度低,含气饱和度变化所产生的地球物理特征变化相对微弱,储层流体识别困难。为此,基于岩石物理参数测试,优选出对含气性敏感的弹性参数组合;利用岩石物理参数关系,推导出基于地震纵、横波阻抗的流体敏感弹性参数计算公式,构建了一个新的含气性识别因子。利用叠前地震资料纵、横波阻抗同步反演结果计算出新的含气性识别因子数据体,对大牛地气田进行了流体识别。研究结果表明,新的含气性识别因子能有效地突出研究区流体变化的影响,对致密砂岩储层的含气性识别能力较强,且具有很好的抗噪能力。
The tight sandstone reservoirs in lower Shihezi formation from Daniudi Gasfield of Ordos Basin is characterized by low-porosity,and the variation of geophysical characteristics followed by oil saturation and gas saturation is weak relatively,therefore the identification of reservoir fluid is difficult in the area.In order to solve the problem,we optimized gas-bearing sensitive elastic parameters based on rock physical parameters testing.By using the relationship in parameters,we derived computation formula for fluid sensitive elastic parameters and constructed a new gas-bearing identification factor.By utilizing the P-wave and S-wave impedance simultaneous inversion result of prestack seismic data,the data volume of new gas-bearing identification factor was computed and applied to the reservoir fluid detection in Daniudi Gasfield.The application results indicate that the new gas-bearing identification factor can effectively highlight the impact of fluid changes and is sensitive to the gas-bearing tight sandstone reservoirs with good anti-noise capability.
The tight sandstone reservoirs in lower Shihezi formation from Daniudi Gasfield of Ordos Basin is characterized by low-porosity,and the variation of geophysical characteristics followed by oil saturation and gas saturation is weak relatively,therefore the identification of reservoir fluid is difficult in the area.In order to solve the problem,we optimized gas-bearing sensitive elastic parameters based on rock physical parameters testing.By using the relationship in parameters,we derived computation formula for fluid sensitive elastic parameters and constructed a new gas-bearing identification factor.By utilizing the P-wave and S-wave impedance simultaneous inversion result of prestack seismic data,the data volume of new gas-bearing identification factor was computed and applied to the reservoir fluid detection in Daniudi Gasfield.The application results indicate that the new gas-bearing identification factor can effectively highlight the impact of fluid changes and is sensitive to the gas-bearing tight sandstone reservoirs with good anti-noise capability.
引文
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[16]丁晓琪,张哨南,周文,等.鄂尔多斯盆地北部上古生界致密砂岩储层特征及其成因探讨[J].石油与天然气地质,2007,28(4):492-496Ding X Q,Zhang S N,Zhou W,et al.Characteristicsand genesis of the Upper Paleozoic tight sandstonereservoirs in the northern Ordos Basin[J].Oil&Gas Geology,2007,28(4):492-496
[17]付金华,魏新善,任军峰.鄂尔多斯盆地天然气勘探形势与发展前景[J].石油学报,2006,27(6):1-4Fu J H,Wei X S,Ren J F.Gas exploration and de-veloping prospect in Ordos Basin[J].Acta PetroleiSinica,2006,27(6):1-4
[18]陈克勇,张哨楠,丁晓琪,等.致密砂岩储层的含气性评价[J].石油天然气学报,2006,28(4):65-68Chen K Y,Zhang S N,Ding X Q,et al.Gas-bearingevaluation on tight sandstone reservoirs[J].Journalof Oil and Gas Technology,2006,28(4):65-68
[19]侯瑞云,刘忠群.鄂尔多斯盆地大牛地气田致密低渗储层评价与开发对策[J].石油与天然气地质,2012,33(1):118-128Hou R Y,Liu Z Q.Resevoir evaluation and develop-ment strategies of Daniudi tight sand gas field in theOrdos Basin[J].Oil&Gas Geology,2012,33(1):118-128
[20]Miller M,Shanley K.Petrophysics in tight gas reser-voirs-key challenges still remain[J].The LeadingEdge,2010,26(12):1465-1469
[21]马中高,周枫,赵群.鄂尔多斯盆地下石盒子组致密砂岩的弹性特征[J].石油学报,2011,32(6):1001-1006Ma Z G,Zhou F,Zhao Q.Elastic properties of tightsands in the Lower Shihezi Formation of Ordos Ba-sin[J].Acta Petrolei Sinica,2011,32(6):1001-1006
[2]康毅力,罗平亚.中国致密砂岩气藏勘探开发关键[J].石油勘探与开发,2007,31(2):239-245Kang Y L,Luo P Y.Current status and prospect ofkey techniques for exploration and production oftight sandstone gas reservoirs in China[J].Petrole-um Exploration and Development,2007,31(2):239-245
[3]唐海发,彭仕宓,赵彦超,等.致密砂岩储层物性的主控因素分析[J].西安石油大学学报(自然科学版),2007,22(1):59-63Tang H F,Peng S M,Zhao Y C,et al.Analysis ofmain control factors of the physical property of tightsandstone reservoir[J].Journal of Xi’an Shiyou U-niversity(Natural Science Edition),2007,22(1):59-63
[4]胡文瑞,翟光明.鄂尔多斯盆地油气勘探开发的实践与可持续发展[J].中国工程科学,2010,12(5):64-71Hu W R,Zhai G M.Practice and sustainable devel-opment of oil and nature gas exploration and devel-opment in Ordos Basin[J].Engineering Sciences,2010,12(5):64-71
[5]Goodway W,Chen T,Downton J.Improved AVOfluid detection and lithology discrimination usingLame petrophysical parameters from P and S inver-sion[J].Extended Abstracts of 67th Annual InternatSEG 1997:183-186
[6]Russell B H,Hedlin K,Hilterman F J,et al.Fluidproperty discrimination with AVO:a Biot-Gassmannperspective[J].Geophysics,2003,68(1):29-39
[7]Dillon L,Schwedersky G,Guilherme V,et al.Fluidproperty discrimination with AVO:a multiscale DHIelastic attributes evalution[J].The Leading Edge,2003,22(10):1024-1029
[8]Hedlin K.Pore space modelus and extraction usingAVO[J].Extended Abstracts of 70th Annual Inter-nat SEG Mtg,2000:170-173
[9]Michael B.Optimal hydrocarbon indicators[J].Ex-tended Abstracts of 71st Annual Internat SEG Mtg,2001:1697-1700
[10]王正付,芮华松.弹性模量在储集层评价中的应用[J].长江大学学报(自科版),2006,3(1):19-21Wang Z F,Rui H S.Elastic modulus in reservoir e-valuation of application[J].Journal of Yangtze Uni-versity(Natural Science Edition),2006,3(1):19-21
[11]宁忠华,贺振华,黄德济.基于地震资料的高灵敏度流体识别因子[J].石油物探,2006,45(3):239-241Ning Z H,He Z H,Huang D J.High sensitive fluididentification based on seismic data[J].GeophysicalProspecting for Petroleum,2006,45(3):239-241
[12]王栋,贺振华,黄德济.新流体识别因子的构建与应用分析[J].石油物探,2009,48(2):141-145Wang D,He Z H,Huang D J.Construction of a newfluid identification factor and analysis on its applica-tion[J].Geophysical Prospecting for Petroleum,2009,49(2):141-145
[13]贺振华,王栋.扩展流体识别因子及应用[J].矿物岩石,2009,29(4):100-103He Z H,Wang D.Expended fluid detection factorand its application[J].Journal of Mineralogy and Pe-trology,2009,29(4):100-103
[14]张哨楠,丁晓琪.鄂尔多斯盆地南部延长组致密砂岩储层特征及其成因[J].成都理工大学学报(自然科学版),2010,37(4):386-395Zhang S N,Ding X Q.Characters and causes of tightsandstones of Yanchang Formation in southern Or-dos Basin,China[J].Journal of Chengdu Universityof Technology(Science&Technology Edition),2010,37(4):386-395
[15]杨晓宁,张惠良,朱国华.致密砂岩的形成机制及其地质意义——以塔里木盆地英南2井为例[J].海相油气地质,2005,10(1):31-36Yang X N,Zhang H L,Zhu G H.Tight sandstoneformation mechanism and its geological significance:an case study from the well Tazhong12in Tarim ba-sin[J]].Marine Origin Petroleum Geology,2005,10(1):31-36
[16]丁晓琪,张哨南,周文,等.鄂尔多斯盆地北部上古生界致密砂岩储层特征及其成因探讨[J].石油与天然气地质,2007,28(4):492-496Ding X Q,Zhang S N,Zhou W,et al.Characteristicsand genesis of the Upper Paleozoic tight sandstonereservoirs in the northern Ordos Basin[J].Oil&Gas Geology,2007,28(4):492-496
[17]付金华,魏新善,任军峰.鄂尔多斯盆地天然气勘探形势与发展前景[J].石油学报,2006,27(6):1-4Fu J H,Wei X S,Ren J F.Gas exploration and de-veloping prospect in Ordos Basin[J].Acta PetroleiSinica,2006,27(6):1-4
[18]陈克勇,张哨楠,丁晓琪,等.致密砂岩储层的含气性评价[J].石油天然气学报,2006,28(4):65-68Chen K Y,Zhang S N,Ding X Q,et al.Gas-bearingevaluation on tight sandstone reservoirs[J].Journalof Oil and Gas Technology,2006,28(4):65-68
[19]侯瑞云,刘忠群.鄂尔多斯盆地大牛地气田致密低渗储层评价与开发对策[J].石油与天然气地质,2012,33(1):118-128Hou R Y,Liu Z Q.Resevoir evaluation and develop-ment strategies of Daniudi tight sand gas field in theOrdos Basin[J].Oil&Gas Geology,2012,33(1):118-128
[20]Miller M,Shanley K.Petrophysics in tight gas reser-voirs-key challenges still remain[J].The LeadingEdge,2010,26(12):1465-1469
[21]马中高,周枫,赵群.鄂尔多斯盆地下石盒子组致密砂岩的弹性特征[J].石油学报,2011,32(6):1001-1006Ma Z G,Zhou F,Zhao Q.Elastic properties of tightsands in the Lower Shihezi Formation of Ordos Ba-sin[J].Acta Petrolei Sinica,2011,32(6):1001-1006
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