镇泾油田长9储层四性关系及有效厚度下限研究
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摘要
利用岩心分析、孔渗及试油试采等资料并结合测井资料对鄂尔多斯盆地镇泾油田延长组长9储层的"四性"关系进行研究,结果表明长9储层岩性主要为细—中粒长石岩屑砂岩和岩屑长石砂岩,成分成熟度低而结构成熟度较好;储集空间以溶蚀孔和原生粒间孔为主。其属于典型的中低孔特低渗储层,岩性和物性的差异控制了储层油气的富集程度。本次研究确定了长9储层有效厚度的岩性、物性和电性下限以及不同类型夹层的扣除标准,对研究区目的层段30多口井特低渗储层进行了精细评价处理,合理地剔除了钙质夹层和泥质夹层,确定了各油井的有效厚度,提高了研究区目的层段油藏测井解释和有利区预测的精度。
On the basis of core analysis,geological and well testing data,combined with the log information,the four-property relations of Chang 9 reservoirs in Zhenjing Oilfield was studied.The results show that lithological characteristics of the reservoir are moderate-fine feldspar-debris and debris-feldspar sandstone,ingredient maturity is low,and structure maturity is medium.Chang 9 reservoir is typical middle pore low permeability oil layer with corrosion holes and intergranular hole as main reservoir space.The difference of lithological character and physical property controlled the oil reservoir accumulation degree.The elimination criterion of lithological,physical and electrical properties cutoffs and various interlayer for determining the effective thickness of oil layers was proposed.The fine evaluation and treatment on more than 30 wells in a certain extra-low permeability reservoir were carried out to eliminate the calcareous interlayers and muddy interlayers.The thickness of oil layers in every well was determined.This method can guarantee the precision of log interpretation and prediction of favorable zones in the layers.
On the basis of core analysis,geological and well testing data,combined with the log information,the four-property relations of Chang 9 reservoirs in Zhenjing Oilfield was studied.The results show that lithological characteristics of the reservoir are moderate-fine feldspar-debris and debris-feldspar sandstone,ingredient maturity is low,and structure maturity is medium.Chang 9 reservoir is typical middle pore low permeability oil layer with corrosion holes and intergranular hole as main reservoir space.The difference of lithological character and physical property controlled the oil reservoir accumulation degree.The elimination criterion of lithological,physical and electrical properties cutoffs and various interlayer for determining the effective thickness of oil layers was proposed.The fine evaluation and treatment on more than 30 wells in a certain extra-low permeability reservoir were carried out to eliminate the calcareous interlayers and muddy interlayers.The thickness of oil layers in every well was determined.This method can guarantee the precision of log interpretation and prediction of favorable zones in the layers.
引文
[1]林春明,张霞,周健,等.鄂尔多斯盆地大牛地气田下石盒子组储层成岩作用特征[J].地球科学进展,2011,26(2):212-223.
[2]张霞,林春明,陈召佑,等.鄂尔多斯盆地镇泾区块延长组长81储层成岩作用特征及其对储集物性的影响[J].地质科学,2011,46(2):530-548.
[3]张霞,林春明,陈召佑,等.鄂尔多斯盆地镇泾区块延长组长8油层组砂岩储层特征[J].高校地质学报,2012,18(2):328-340.
[4]张宏,胡海涛.下寺湾油田川道区储层四性关系及有效厚度下限研究[J].辽宁化工,2012,41(10):1014-1017.
[5]罗杰,李昀.子北油田毛家河油区长6储层“四性”关系研究[J].内蒙古石油化工,2010,16:1-4.
[6]郑锐,刘林玉,李南星.白狼城地区长2储层四性关系及有效厚度下限研究[J].石油地质与工程,2011,25(2):33-36.
[7]王桂成,周振峰,徐永强.储层四性关系研究在直罗油田的应用[J].中国石油和化工标准与质量,2011,10:195-196.
[8]李明,刘继梓,王雪荔,等.S油田W南区长6特低渗透储层物性下限标准研究[J].辽宁化工,2010,39(10):1065-1068.
[9]焦翠华,夏冬冬,王军,等.特低渗砂岩储层物性下限确定方法-以永进油田西山窑组储集层为例[J].石油与天然气地质,2009,30(3):379-383.
[10]靳亚勤,王桂成,张涛.直罗油田马莲沟区油层有效厚度下限标准新研究[J].中国西部科技,2010,9(4):11-13.
[11]马彬.四性关系研究在奈曼油田的应用[J].石油地质与工程,2011,25(4):39-41.
[12]万玲,孙岩,魏国齐.确定储集层物性参数下限的一种新方法及其应用—以鄂尔多斯盆地中部气田为例[J].沉积学报,1999,17(3):454-457.
[13]王艳忠,操应长.车镇凹陷古近系深层碎屑岩有效储层物性下限及控制因素[J].沉积学报,2010,28(4):752-761.
[14]郝海燕.特低渗透砂岩储层物性下限确定方法[J].辽宁化工,2012,41(4):361-362.
[15]宋子齐,程建国,王静,等.特低渗透油层有效厚度确定方法研究[J].石油学报,2006,27(6):103-106.
[2]张霞,林春明,陈召佑,等.鄂尔多斯盆地镇泾区块延长组长81储层成岩作用特征及其对储集物性的影响[J].地质科学,2011,46(2):530-548.
[3]张霞,林春明,陈召佑,等.鄂尔多斯盆地镇泾区块延长组长8油层组砂岩储层特征[J].高校地质学报,2012,18(2):328-340.
[4]张宏,胡海涛.下寺湾油田川道区储层四性关系及有效厚度下限研究[J].辽宁化工,2012,41(10):1014-1017.
[5]罗杰,李昀.子北油田毛家河油区长6储层“四性”关系研究[J].内蒙古石油化工,2010,16:1-4.
[6]郑锐,刘林玉,李南星.白狼城地区长2储层四性关系及有效厚度下限研究[J].石油地质与工程,2011,25(2):33-36.
[7]王桂成,周振峰,徐永强.储层四性关系研究在直罗油田的应用[J].中国石油和化工标准与质量,2011,10:195-196.
[8]李明,刘继梓,王雪荔,等.S油田W南区长6特低渗透储层物性下限标准研究[J].辽宁化工,2010,39(10):1065-1068.
[9]焦翠华,夏冬冬,王军,等.特低渗砂岩储层物性下限确定方法-以永进油田西山窑组储集层为例[J].石油与天然气地质,2009,30(3):379-383.
[10]靳亚勤,王桂成,张涛.直罗油田马莲沟区油层有效厚度下限标准新研究[J].中国西部科技,2010,9(4):11-13.
[11]马彬.四性关系研究在奈曼油田的应用[J].石油地质与工程,2011,25(4):39-41.
[12]万玲,孙岩,魏国齐.确定储集层物性参数下限的一种新方法及其应用—以鄂尔多斯盆地中部气田为例[J].沉积学报,1999,17(3):454-457.
[13]王艳忠,操应长.车镇凹陷古近系深层碎屑岩有效储层物性下限及控制因素[J].沉积学报,2010,28(4):752-761.
[14]郝海燕.特低渗透砂岩储层物性下限确定方法[J].辽宁化工,2012,41(4):361-362.
[15]宋子齐,程建国,王静,等.特低渗透油层有效厚度确定方法研究[J].石油学报,2006,27(6):103-106.