富县油田姜家川地区长_8油层组岩性油藏勘探
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摘要
为了探究姜家川地区长_8油层组油气富集的控制因素,明确岩性油藏的勘探前景,在前人研究成果的基础上,利用录井、测井等资料,对长_8油层组的沉积特征、储集层特征、油藏特征进行综合分析。结果表明,长_8岩性油藏主要受沉积微相分布、烃源岩供给以及成岩作用的控制。同时建立了"夹心式"充注、优势砂体储集的油气成藏模式,并结合近年来的勘探成果预测出5个Ⅰ类有利区和2个Ⅱ类有利区,进而证实了姜家川地区长_8岩性油藏具有良好的勘探前景。研究结果对研究区的下部勘探具有一定的指导意义。
To identify controlling factors for hydrocarbon enrichments in Chang_8 oil-bearing formation of the Jiangjiachuan Area and to highlight prospects of exploration for lithologic reservoirs,previous research results,together with well logging and logging data to conduct comprehensive analyses for features of sedimentation,reservoir formation and reservoirs in the Chang_8 oil-bearing formation. Research results show,Chang_8 lithologic reservoirs are subject to control of distribution of sedimentary micro-facies,hydrocarbon source rock supplies and diagenesis. At the same time,reservoir-forming model with"sandwiched" charging and prevailing sandstone reservoir formations has been established. With consideration to exploration achievements made in the past few years,5 Class Ⅰ and 2 Class Ⅱ potential zones have been identified. These findings show Chang_8 lithologic reservoirs in the Jiangjiachuan Area have bright prospects in exploration. Relevant researches may provide necessary guidance for future exploration operations within the concerned area.
To identify controlling factors for hydrocarbon enrichments in Chang_8 oil-bearing formation of the Jiangjiachuan Area and to highlight prospects of exploration for lithologic reservoirs,previous research results,together with well logging and logging data to conduct comprehensive analyses for features of sedimentation,reservoir formation and reservoirs in the Chang_8 oil-bearing formation. Research results show,Chang_8 lithologic reservoirs are subject to control of distribution of sedimentary micro-facies,hydrocarbon source rock supplies and diagenesis. At the same time,reservoir-forming model with"sandwiched" charging and prevailing sandstone reservoir formations has been established. With consideration to exploration achievements made in the past few years,5 Class Ⅰ and 2 Class Ⅱ potential zones have been identified. These findings show Chang_8 lithologic reservoirs in the Jiangjiachuan Area have bright prospects in exploration. Relevant researches may provide necessary guidance for future exploration operations within the concerned area.
引文
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[2]邓秀芹,姚泾利,胡喜锋,等.鄂尔多斯盆地延长组超低渗透岩性油藏成藏流体动力系统特征及其意义[J].西北大学学报(自然科学版),2011,41(6):1044-1050.
[3]郭彦如,刘俊榜,杨华,等.鄂尔多斯盆地延长组低渗透致密岩性油藏成藏机理[J].石油勘探与开发,2012,39(4):417-425.
[4]郭继刚,郭凯,宫鹏骐,等.鄂尔多斯盆地延长组储层致密化及其影响下的致密油充注特征[J].石油实验地质,2017,39(2):169-179.
[5]刘广林,马爽,邵晓州,等.鄂尔多斯盆地天环坳陷北段长8储层致密成因[J].东北石油大学学报,2016,40(5):38-45.
[6]张颖,张海涛.鄂尔多斯盆地红河油田长81油气富集主控因素研究[J].中国石油勘探,2016,21(6):73-80.
[7]郭凯.鄂尔多斯盆地陇东地区长7段有效烃源岩及生排烃研究[J].石油实验地质,2017,39(1):15-23.
[8]梁承春,刘小虎,林清申,等.红河油田长8致密油成藏机理及“甜点”模式[J].特种油气藏,2016,23(6):26-30,142.
[9]万友利,丁晓琪,葛鹏莉,等.鄂尔多斯盆地富县地区长8油层组高效储层形成机理[J].石油天然气学报,2010,32(6):181-185,533.
[10]郑忠文,张汉生.鄂尔多斯盆地富县探区延长组长6-长8段超低渗砂岩储集层孔喉特征[J].新疆石油地质,2016,37(1):13-17.
[11]郭德运,郭艳琴,李文厚,等.富县探区上三叠统延长组长8油藏富集因素[J].西北大学学报(自然科学版),2010,40(1):93-97.
[12]闫帅,王桂成,常伟丽,等.直罗油田三叠系延长组长8段油气成藏条件分析[J].天然气勘探与开发,2015,38(1):16-21.
[13]贺永红,任战利,陈占军,等.富县探区长8段致密油藏特征及主控因素[J].西安科技大学学报,2016,36(3):393-399.
[14]刘化清,李相博,完颜容,等.鄂尔多斯盆地长8油层组古地理环境与沉积特征[J].沉积学报,2011,29(6):1086-1095.
[15]黄德才.鄂尔多斯盆地富县地区延长组长6-长8沉积体系研究[D].成都:成都理工大学,2011.
[16]杨超,王香增,任来义,等.鄂尔多斯盆地延长探区南部长8油层组物源性质及构造背景[J].石油天然气学报,2013,35(10):32-36.
[17]赵靖舟,吴少波,武富礼.论低渗透储层的分类与评价标准---以鄂尔多斯盆地为例[J].岩性油气藏,2007,19(3):28-31,53.
[18]杨华,刘显阳,张才利,等.鄂尔多斯盆地三叠系延长组低渗透岩性油藏主控因素及其分布规律[J].岩性油气藏,2007,19(3):1-6.
[19]刘化清,袁剑英,李相博,等.鄂尔多斯盆地延长期湖盆演化及其成因分析[J].岩性油气藏,2007,19(1):52-56.