弹性模量流体因子在永新工区储层预测中的应用
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摘要
利用储层弹性模量可以描述不同类型的岩性和流体,但是单一弹性模量在储层预测时通常具有多解性。考虑到弹性模量流体因子(Elastic Modulus Fluid Factor,EMFF)具有体积模量和剪切模量的双重特性,从体积模量K和剪切模量μ的交会出发,引入弹性模量流体因子的概念,解决了单一弹性模量在储层预测时具有多解性的问题,提高了识别流体的能力。在实际应用中,利用叠前弹性参数反演得到弹性模量参数,结合岩石物理分析结果构建弹性模量流体因子,以此为基础即可实现流体识别和储层预测。胜利油田永新工区的应用结果表明,新构建的弹性模量流体因子能够有效地识别含油储层。
Elastic modulus can be used to characterize various lithology and fluid in reservoir.However,the results are always ambiguous by single elastic modulus.Since elastic modulus fluid factor(EMFF) owns the properties of both bulk modulus and shear modulus,based on the crossplot of bulk modulus against shear modulus,EMFF was introduced to reduce the ambiguity of reservoir prediction.In application,EMFF could be constructed from elastic modulus parameters which could be obtained from pre-stack elastic parameters inversion and petrophysical results.On the basis,fluid identification and reservoir prediction can be realized.The application result at Yongxin Block of Shengli Oilfield shows that the constructed EMFF could identify the oil reservoir efficiently.
Elastic modulus can be used to characterize various lithology and fluid in reservoir.However,the results are always ambiguous by single elastic modulus.Since elastic modulus fluid factor(EMFF) owns the properties of both bulk modulus and shear modulus,based on the crossplot of bulk modulus against shear modulus,EMFF was introduced to reduce the ambiguity of reservoir prediction.In application,EMFF could be constructed from elastic modulus parameters which could be obtained from pre-stack elastic parameters inversion and petrophysical results.On the basis,fluid identification and reservoir prediction can be realized.The application result at Yongxin Block of Shengli Oilfield shows that the constructed EMFF could identify the oil reservoir efficiently.
引文
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[21]Dillon L,Schwedersky G,Vasquez G,et al.A multi-scale DHI elastic attributes evaluation[J].The Lead-ing Edge,2003,22(10):1024-1029
[2]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):239-241 Ning Z H,He Z H,Huang D J.High sensitive fluid identification based on seismic data[J].Geophysical Prospecting for Petroleum,2006,45(3):239-241
[3]林凯,贺振华,熊晓军,等.基于Gassmann方程的鲕滩储层流体替换技术及其应用[J].石油物探,2009,48(5):493-498 Lin K,He Z H,Xiong X J,et al.Fluid substitution simulation technology based on Gassmann’s equa-tion for oolitic shoal reservoir and its application[J].Geophysical Prospecting for Petroleum,2009,48(5):493-498
[4]郎晓玲,彭仕宓,康洪全,等.叠前同时反演方法在流体识别中的应用[J].石油物探,2010,49(2):164-169 Lang X L,Peng S M,Kang H Q,et al.Application of prestack simultaneous inversion in fluid identifica-tion[J].Geophysical Prospecting for Petroleum,2010,49(2):164-169
[5]葸晓宇,凌云,孙德胜,等.叠前地震反演应用研究[J].石油物探,2010,49(4):384-389 Xi X Y,Ling Y,Sun D S,et al.Application research of pre-stack seismic inversion[J].Geophysical Pros-pecting for Petroleum,2010,49(4):384-389
[6]Smith G C,Gidlow P M.Weighted stacking for rock propert y estimation and detection of gas[J].Geo-physical Prospecting,1987,35(9):915-942
[7]Goodway B,Chen,T,Downton J.Improved AVO fluid detection and lithology discrimination using Lame petrophyical parameters:“λρ”,“μρ”,&“λ/μfluid stack”,from P and S inversions[J].Expanded Abstract of 67 th Annual Internat SEG Mtg,1997,183-186
[8]Dufour J,Goodway B,Shook I,et al.AVO analysis to extract rock parameters on the Blackfoot 3C-3D seismic data[J].Expanded Abstract of 68 th Annual Internat SEG Mtg,1998,174-177
[9]Gray D.Bridging the gap:using AVO to detect changes in fundamental elastic constants[J].Ex-panded Abstract of 59 th Annual Internat SEG Mtg,1999,852-855
[10]Gray D,Andersen E.The application of AVO and inversion to the estimation of rock properties[J].Expanded Abstracts of 70 th Annual Internat SEG Mtg,2000,549-552
[11]Gray D.Elastic inversion for Lame parameters[J].Expanded Abstracts of 72 nd Annual Internat SEG Mtg,2002,679-700
[12]Russell B H,Hedlin K,Hilterman F J,et al.Fluid property discrimination with AVO:a Biot-Gassmann perspecive[J].Geophysics,2003,68(1):29-39
[13]Russell B H,Gray D,Hampson D P,et al.Linearized AVO and poroelasticity[C]//CREWES Research Report,2006,18:1-24
[14]Connolly P.Elastic impedance[J].The Leading Edge,1999,18(4):438-452
[15]王保丽,印兴耀,张繁昌.基于Gray近似的弹性波阻抗方程及反演[J].石油地球物理勘探,2007,42(4):435-439 Wang B L,Yin X Y,Zhang F C.Gray approxima-tion-based elastic wave impedance equation and in-version[J].Oil Geophysical Prospecting,2007,42(4):435-439
[16]印兴耀,张世鑫,张繁昌,等.利用基于Russell近似的弹性波阻抗反演进行储层描述和流体识别[J].石油地球物理勘探,2010,45(3):373-380 Yin X Y,Zhang S X,Zhang F C,et al.Utilizing Rus-sell approximation-based elastic wave impedance in-version to conduct reservoir description and fluid i-dentification[J].Oil Geophysical Prospecting,2010,45(3):373-380
[17]Quakenbush M,Shang B,Tuttle C.Poisson imped-ance[J].The Leading Edge,2006,25(2):128-138
[18]Mazumdar P.Poisson dampening factor[J].The Leading Edge,2007,26(7):850-852
[19]王化爱.东营凹陷古近系岩性地层油气藏层序地层学特征[J].石油与天然气地质,2010,31(2):158-164 Wang H A.Sequence stratigraphic characteristics of the Paleocene lithologic and stratigraphic reservoirs in the Dongying Depression[J].Oil&Gas Geology,2010,31(2):158-164
[20]韩文功,印兴耀,王兴谋,等.地震技术新进展[M].山东东营:中国石油大学出版社,2006:48-51 Han W G,Yin X Y,Wang X M,et al.New development of seismic technology[M].Dongying,Shandong:China University of Petroleum Press,2006:48-51
[21]Dillon L,Schwedersky G,Vasquez G,et al.A multi-scale DHI elastic attributes evaluation[J].The Lead-ing Edge,2003,22(10):1024-1029
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