基于岩石物理相分类确定致密气储层渗透率——以苏里格东区致密气储层渗透率研究为例
|
摘要
针对苏里格东区致密气储层受多期不同类型沉积、成岩作用及构造等因素影响,储层孔隙空间小、孔隙类型结构和测井响应复杂,储层具有非均质、非线性分布的特点,利用岩石物理相分类研究致密气储层渗透率参数建模,确定评价储层岩石物理相的多种信息、划分方法及其分类建模技术.通过研究区致密气储层各类测井、岩心和试气资料,在建立不同类别岩石物理相储层渗透率参数解释模型研究中,分类模型数据点分布的拟合具有相对集中分布趋势及其较好的线性关系.特别是分类模型利用拟合度较好的密度、声波时差、自然电位、自然伽马、伽马钾、钍等曲线分别求取渗透率参数,并采用Hodges-Lehmann法综合评估后确定,明显改善和提高了致密气储层渗透率参数的计算精度和效果,有效地克服了致密气储层低信噪比、低分辨力的评价特征,为准确建立致密气储层参数建模提供了有效方法.
The tight gas reservoir in the eastern of Sulige is influenced by multi-period sedimentary,diagenesis and structure.And it has small pore space,complex pore structure and complicated log response The reservoir is characterized by heterogeneity and nonlinearity distribution.So petrophysical facies classification can be used for the modeling of permeability in tight gas reservoir in order to determine the various information,division method and classified modeling of evaluating petrophysical facies of reservoir.The interpretation models of different types of permeability parameters which are corresponding to different reservoir petrophysical facies can be established by the use of logging,core and test data in the tight gas reservoir.The distribution fitting of data points in classified models has relatively concentrated distribution trend and a good linear relationship.The classified models which can calculate permeability parameters using the better fitting of density,acoustic,spontaneous potential,natural gamma ray,potassium gamma-rays and thorium and use Hodges-Lehmann method to assess,improve and enhance the accuracy and the effect of tight gas reservoir permeability parameters.It overcomes the characteristics of low signal to noise ratio and low resolution which exist in the tight gas reservoir and provides an effective method to accurately establish the model of the tight gas reservoir parameters.
The tight gas reservoir in the eastern of Sulige is influenced by multi-period sedimentary,diagenesis and structure.And it has small pore space,complex pore structure and complicated log response The reservoir is characterized by heterogeneity and nonlinearity distribution.So petrophysical facies classification can be used for the modeling of permeability in tight gas reservoir in order to determine the various information,division method and classified modeling of evaluating petrophysical facies of reservoir.The interpretation models of different types of permeability parameters which are corresponding to different reservoir petrophysical facies can be established by the use of logging,core and test data in the tight gas reservoir.The distribution fitting of data points in classified models has relatively concentrated distribution trend and a good linear relationship.The classified models which can calculate permeability parameters using the better fitting of density,acoustic,spontaneous potential,natural gamma ray,potassium gamma-rays and thorium and use Hodges-Lehmann method to assess,improve and enhance the accuracy and the effect of tight gas reservoir permeability parameters.It overcomes the characteristics of low signal to noise ratio and low resolution which exist in the tight gas reservoir and provides an effective method to accurately establish the model of the tight gas reservoir parameters.
引文
[1]章雄,潘和平,骆淼,等.致密砂岩气层测井解释方法综述[J].工程地球物理学报,2005,2(6):431-436.Zhang X,Pan H P,Luo M,et al.Summary of logging interpretation for gas-bearing tight sandstone[J].Chinese Journal of Engineering Geophysics,2005,2(6):431-436.
[2]吕其彪,孙作兴.岩石物理模版在储层定量解释中的应用[J].地球物理学进展,2012,27(2):610-618.Lv Q B,Sun Z X.Application of rockphysics chart to quantitative reservoir interpretation[J].Progress in Geophysics,2012,27(2):610-618.
[3]黄布宙,李舟波,莫修文,等.复杂泥质砂岩储层测井解释模型研究[J].石油物探,2009,48(1):40-47.Huang B Z,Li Z B,Mo X W,et al.Research on interpretation model of complex clayed sandstone reservoir[J].Geophysical Prospecting for Petroleum,2009,48(1):40-47.
[4]付金华,魏新善,任军峰,等.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):1-4.Fu J H,Wei X S,Ren J F,et al.Gas exploration and developing prospect in Ordos Basin[J].Acta Petrolei Sinica,2006,27(6):1-4.
[5]杨华,付金华,魏新善.鄂尔多斯盆地天然气成藏特征[J].天然气工业,2005,25(4);5-8.Yang H,Fu J H,Wei X S.Characteristics of natural gas reservoir formation in E'erduosi Basin[J].Natural Gas Industry,2005,25(4):5-8.
[6]文华国,郑荣才,高红灿,等.苏里格气田苏6井区下石盒子组盒8段沉积相特征[J].沉积学报,2007,25(1):90-98.Wen H G,Zheng R C,Gao H C,et al.Sedimentary facies of the 8th member of lower Shihezi formation in Su6 area Sulige gasfield[J].Acta Sedimentologica Sinica,2007,25(1):90-98.
[7]熊琦华,彭仕宓,黄述旺,等.岩石物理相研究方法初探—以辽河冷冻-雷区为例[J].石油学报,1994,(增刊):68-75.Xiong Q H,Peng S M,Huang S W,et al.A preliminary study of the new concept of petrophysical facies and its initial application in Lengdong-Leijia region in Liaohe depression[J].Acta Petrolei Sinica,1994,(supplement):68-75.
[8]姚光庆,赵彦超,张森龙.新民油田低渗细粒储集砂岩岩石物理相研究[J].地球科学,1995,20(3);355-360.Yao G Q,Zhao Y C,Zhang S L Petrophysical facies of low permeability and fine grain reservoir sandstone in Xinmin oil field[J].Earth Science,1995 20(3):355-360.
[9]宋子齐,唐长久,庞振宇,等.利用岩石物理相“甜点”筛选特低渗透储层含油有利区[J].石油学报,2008,29(5):711-716.Song Z Q,Tang C J,Pang Z Y,et al.Determination of favorable oi-l bearing areas with extra low-permeability reservoir by"dessert"of petro-physical fades[J].Acta Petrolei Sinica,2008,29(5):711-716.
[10]宋子齐,程国建,杨立雷,等.利用测井资料精细评价特低渗透储层的方法[J].石油实验地质,2006,28(6):595-599.Song Z Q,Cheng J G,Yang L L,et al.A method for fine evaluation in extra-low permeability reservoirs using logging data[J].Petroleum Geology&-Experiment,2006,28(6):595-599.
[11]宋子齐,王瑞飞,孙颖,等.基于成岩储集相定量分类模式确定特低渗透相对优质储层[J].沉积学报,2011,29(1):88-95.Song Z Q,Wang R F,Sun Y,et al.Based on the quantitative classification mode of diagenetic reservoir facies to filter relatively excellent quality[J].Acta Sedimentologica Sinica,2011,29(1).88-95.
[12]王瑞飞,陈明强.储层沉积-成岩过程中孔隙度参数演化的定量分析[J].地质学报,2007,81(10):1432-1437.Wang R F,Chen M Q.Quantitative analysis of porosity evolution during the reservoir sedimentation-diagenesis[J].Acta Geologica Sinica,2007,81(10):1432-1437.
[13]王瑞飞,沈平平,宋子齐,等.特低渗透砂岩油藏储层微观孔喉特征[J].石油学报,2009,30(4):560-563.Wang R F,Shen P P,Song Z Q,et al.Characteristics of micro-pore throat in ultra-low permeability sandstone reservoir[J].Acta Petrolei Sinica,2009,30(4),560-563.
[14]宋子齐,景成,孙宝佃,等.自然电位、自然伽马测井曲线在文15块的应用[J].断块油气田,2011,18(1):130-133.Song Z Q,Jing C,Sun B D,et al.Application of selfpotential and gamma ray logging curves in Block Wen 15[J].Fault-Block oil&Gas Field,2011,18(1):130-133.
[15]孙宝佃,宋子齐,成志刚,等.特低渗透储层测井系列优化评价研究—以HQ地区特低渗透储层测井系列评价效果分析为例[J].石油地球物理勘探,2012,47(3):483-490.Sun B D,Song Z Q,Cheng Z G,et al.Ultra-low permeability reservoir logging series evaluation in HQ area[J].Oil Geophysical Prospecting,2012,47(3):483-490.
[16]宋子齐.测井多参数的地质应用[M].西安:西北工业大学出版社,1993:110-140.Song Z Q.Geological application of logging multi-parameter[M].Xi'an:Northwestern University Press,1993:110-140.
[17]张福明,查明,邵才瑞,等.天然气的测井勘探与评价技术[J].地球物理学进展,2007,22(1):179-185.Zhang F M,Zha M,Shao C R,et al.Technology of natural gas exploration and evaluation based on wel-llogging data[J].Progress in Geophysics,2007,22(1):179-185.
[18]宋子齐.灰色理论油气储层评价[M].北京:石油工业出版社,1995:17-77.Song Z Q.Oil and gas reservoir evaluation with the gray theory[M].Beijing:Publishing Company of Petroleum Industry,1995:17-77.
[19]宋子齐,王浩,赵磊,等.灰色系统储盖组合精细评价的分析方法[J].石油学报,2002,23(4):35-41.Song Z Q,Wang H,Zhao L,et al.Fine evaluation of reservoir-cap combination using gray system[J].Acta Petrolei Sinica,2002,23(4):35-41.
[20]宋子齐,杨立雷,程英,等.非均质砾岩储层综合评价方法[J].石油实验地质,2007,29(4):415-419.Song Z Q,Yang L L,Cheng Y,et al.Comprehensive evaluation of heterogeneity conglomerate reservoirs[J].Petroleum Geology&Experiment,2007,29(4):415-419.
[2]吕其彪,孙作兴.岩石物理模版在储层定量解释中的应用[J].地球物理学进展,2012,27(2):610-618.Lv Q B,Sun Z X.Application of rockphysics chart to quantitative reservoir interpretation[J].Progress in Geophysics,2012,27(2):610-618.
[3]黄布宙,李舟波,莫修文,等.复杂泥质砂岩储层测井解释模型研究[J].石油物探,2009,48(1):40-47.Huang B Z,Li Z B,Mo X W,et al.Research on interpretation model of complex clayed sandstone reservoir[J].Geophysical Prospecting for Petroleum,2009,48(1):40-47.
[4]付金华,魏新善,任军峰,等.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):1-4.Fu J H,Wei X S,Ren J F,et al.Gas exploration and developing prospect in Ordos Basin[J].Acta Petrolei Sinica,2006,27(6):1-4.
[5]杨华,付金华,魏新善.鄂尔多斯盆地天然气成藏特征[J].天然气工业,2005,25(4);5-8.Yang H,Fu J H,Wei X S.Characteristics of natural gas reservoir formation in E'erduosi Basin[J].Natural Gas Industry,2005,25(4):5-8.
[6]文华国,郑荣才,高红灿,等.苏里格气田苏6井区下石盒子组盒8段沉积相特征[J].沉积学报,2007,25(1):90-98.Wen H G,Zheng R C,Gao H C,et al.Sedimentary facies of the 8th member of lower Shihezi formation in Su6 area Sulige gasfield[J].Acta Sedimentologica Sinica,2007,25(1):90-98.
[7]熊琦华,彭仕宓,黄述旺,等.岩石物理相研究方法初探—以辽河冷冻-雷区为例[J].石油学报,1994,(增刊):68-75.Xiong Q H,Peng S M,Huang S W,et al.A preliminary study of the new concept of petrophysical facies and its initial application in Lengdong-Leijia region in Liaohe depression[J].Acta Petrolei Sinica,1994,(supplement):68-75.
[8]姚光庆,赵彦超,张森龙.新民油田低渗细粒储集砂岩岩石物理相研究[J].地球科学,1995,20(3);355-360.Yao G Q,Zhao Y C,Zhang S L Petrophysical facies of low permeability and fine grain reservoir sandstone in Xinmin oil field[J].Earth Science,1995 20(3):355-360.
[9]宋子齐,唐长久,庞振宇,等.利用岩石物理相“甜点”筛选特低渗透储层含油有利区[J].石油学报,2008,29(5):711-716.Song Z Q,Tang C J,Pang Z Y,et al.Determination of favorable oi-l bearing areas with extra low-permeability reservoir by"dessert"of petro-physical fades[J].Acta Petrolei Sinica,2008,29(5):711-716.
[10]宋子齐,程国建,杨立雷,等.利用测井资料精细评价特低渗透储层的方法[J].石油实验地质,2006,28(6):595-599.Song Z Q,Cheng J G,Yang L L,et al.A method for fine evaluation in extra-low permeability reservoirs using logging data[J].Petroleum Geology&-Experiment,2006,28(6):595-599.
[11]宋子齐,王瑞飞,孙颖,等.基于成岩储集相定量分类模式确定特低渗透相对优质储层[J].沉积学报,2011,29(1):88-95.Song Z Q,Wang R F,Sun Y,et al.Based on the quantitative classification mode of diagenetic reservoir facies to filter relatively excellent quality[J].Acta Sedimentologica Sinica,2011,29(1).88-95.
[12]王瑞飞,陈明强.储层沉积-成岩过程中孔隙度参数演化的定量分析[J].地质学报,2007,81(10):1432-1437.Wang R F,Chen M Q.Quantitative analysis of porosity evolution during the reservoir sedimentation-diagenesis[J].Acta Geologica Sinica,2007,81(10):1432-1437.
[13]王瑞飞,沈平平,宋子齐,等.特低渗透砂岩油藏储层微观孔喉特征[J].石油学报,2009,30(4):560-563.Wang R F,Shen P P,Song Z Q,et al.Characteristics of micro-pore throat in ultra-low permeability sandstone reservoir[J].Acta Petrolei Sinica,2009,30(4),560-563.
[14]宋子齐,景成,孙宝佃,等.自然电位、自然伽马测井曲线在文15块的应用[J].断块油气田,2011,18(1):130-133.Song Z Q,Jing C,Sun B D,et al.Application of selfpotential and gamma ray logging curves in Block Wen 15[J].Fault-Block oil&Gas Field,2011,18(1):130-133.
[15]孙宝佃,宋子齐,成志刚,等.特低渗透储层测井系列优化评价研究—以HQ地区特低渗透储层测井系列评价效果分析为例[J].石油地球物理勘探,2012,47(3):483-490.Sun B D,Song Z Q,Cheng Z G,et al.Ultra-low permeability reservoir logging series evaluation in HQ area[J].Oil Geophysical Prospecting,2012,47(3):483-490.
[16]宋子齐.测井多参数的地质应用[M].西安:西北工业大学出版社,1993:110-140.Song Z Q.Geological application of logging multi-parameter[M].Xi'an:Northwestern University Press,1993:110-140.
[17]张福明,查明,邵才瑞,等.天然气的测井勘探与评价技术[J].地球物理学进展,2007,22(1):179-185.Zhang F M,Zha M,Shao C R,et al.Technology of natural gas exploration and evaluation based on wel-llogging data[J].Progress in Geophysics,2007,22(1):179-185.
[18]宋子齐.灰色理论油气储层评价[M].北京:石油工业出版社,1995:17-77.Song Z Q.Oil and gas reservoir evaluation with the gray theory[M].Beijing:Publishing Company of Petroleum Industry,1995:17-77.
[19]宋子齐,王浩,赵磊,等.灰色系统储盖组合精细评价的分析方法[J].石油学报,2002,23(4):35-41.Song Z Q,Wang H,Zhao L,et al.Fine evaluation of reservoir-cap combination using gray system[J].Acta Petrolei Sinica,2002,23(4):35-41.
[20]宋子齐,杨立雷,程英,等.非均质砾岩储层综合评价方法[J].石油实验地质,2007,29(4):415-419.Song Z Q,Yang L L,Cheng Y,et al.Comprehensive evaluation of heterogeneity conglomerate reservoirs[J].Petroleum Geology&Experiment,2007,29(4):415-419.