鄂尔多斯盆地古生界气藏成藏模式及优势储层预测

doi:10.3969/j.issn.1006-6535.2022.02.008

摘要/Abstract

摘要： 鄂尔多斯盆地延长气田天然气勘探起步较晚,古生界气藏隐蔽性较强,勘探难度较大。为探究该地区气藏成藏模式,以沉积学原理为基础,从地层分布、构造特征、沉积相、储层主控因素等方面研究了延长气田南部地区古生界天然气成藏特征及富集规律。研究表明:延长气田相对优质储层是天然气成藏与富集的关键,储层规模决定气藏规模;优质储层发育主要受古地貌、岩石类型和后期成岩作用控制:优质储层主要发育在三角洲分流河道、河口坝中,富石英质沉积体系天然气富集程度较高。该研究成果对延长气田古生界气藏勘探开发具有重要指导意义。

关键词: 气藏, 成藏主控因素, 富集规律, 致密储层, 鄂尔多斯盆地, 延长气田

Abstract: Natural gas in Yanchang Gas Field Ordos Basin was explored relatively late. Paleozoic gas reservoir is buried deeply and difficult to explore. In order to explore the accumulation pattern of gas reservoirs in this area, the accumulation characteristics and enrichment pattern of Paleozoic gas reservoirs in the south of Yanchang Gas Field were studied in terms of stratigraphic distribution, tectonic features, sedimentary facies and reservoir controlling factors based on sedimentological principles. The study showed that the relatively high-quality reservoirs in Yanchang Gas Field were the key to natural gas formation and enrichment, and the reservoir size determined the scale of the gas reservoir; the development of high-quality reservoirs was mainly controlled by paleo-geomorphology, rock type and late diagenesis; high-quality reservoirs were mainly developed in deltaic distributary channels and estuary dams, and the quartz-rich sedimentary system was high in natural gas enrichment. There is much for reference of the study results to the exploration and development of Paleozoic gas reservoirs in Yanchang Gas Field.

Key words: gas reservoir, key controlling factors for hydrocarbon accumulation, enrichment law, tight reservoir, Ordos Basin, Yanchang Gas Field

中图分类号:

TE122.1

李浩. 鄂尔多斯盆地古生界气藏成藏模式及优势储层预测[J]. 特种油气藏, 2022, 29(2): 57-63.

Li Hao. Accumulation Pattern and Favorable Reservoir Prediction of Paleozoic Gas Reservoirs in Ordos Basin[J]. Special Oil & Gas Reservoirs, 2022, 29(2): 57-63.

参考文献

[1] 杨华,付金华,刘新社,等.苏里格大型致密砂岩气藏形成条件及勘探技术[J].石油学报,2012,33(增刊1):27-35.
YANG Hua,FU Jinhua,LIU Xinshe,et al.Formation conditions and exploration technology of large-scale tight sandstone gas reservoir in Sulige[J].Acta Petrolei Sinica,2012,33(S1):27-35.
[2] 邵珠福,钟建华,于艳玲,等.从成藏条件和成藏机理对比非常规页岩气和煤层气[J].特种油气藏,2012,19(4):21-24.
SHAO Zhufu,ZHONG Jianhua,YU Yanling,et al.Compare shale gas with CBM in accumulation conditions and mechanisms[J].Special Oil & Gas Reservoirs,2012,19(4):21-24.
[3] 荆铁亚,杨光,林拓,等.中国中上元古界页岩气地质特征及有利区预测[J].特种油气藏,2015,22(6):5-9.
JING Tieya,YANG Guang,LIN Tuo,et al.Geological characteristics and prospective zone prediction of Meso-Epiproterozoic shale gas in China[J].Special Oil & Gas Reservoirs,2015,22(6):5-9.
[4] 周帅,陈尚斌,司庆红,等.鄂尔多斯盆地东缘太原组页岩气成藏特征[J].特种油气藏,2016,23(1):38-43.
ZHOU Shuai,CHEN Shangbin,SI Qinghong,et al.Taiyuan shale gas accumulation characteristics in eastern Ordos Basin[J].Special Oil & Gas Reservoirs,2016,23(1):38-43.
[5] 杨华,张文正,李剑锋,等.鄂尔多斯盆地北部上古生界天然气的地球化学研究[J].沉积学报,2004,22(增刊1):39-44.
YANG Hua,ZHANG Wenzheng,LI Jianfeng,et al.Geochemical study of the Upper Paleozoic gas in the northern Ordos Basin[J].Acta Sedimentologica Sinica,2004,22(S1):39-44.
[6] 付金华,段晓文,席胜利.鄂尔多斯盆地上古生界气藏特征[J].天然气工业,2000,20(6):16-19.
FU Jinhua,DUAN Xiaowen,XI Shengli.Characteristics of Upper Paleozoic gas reservoirs in Ordos Basin[J].Natural Gas Industry,2000,20(6):16-19.
[7] 付金华,魏新善,任军峰.伊陕斜坡上古生界大面积岩性气藏分布与成因[J].石油勘探与开发, 2008,35(6):664-667.
FU Jinhua,WEI Xinshan,REN Junfeng.Distribution and genesis of large-scale Upper Palaeozoic lithologic gas reservoirs on Yi-Shaan Slope[J].Petroleum Exploration and Development,2008,35(6):664-667.
[8] 李剑,罗霞,单秀琴,等.鄂尔多斯盆地上古生界天然气成藏特征[J].石油勘探与开发,2005,32(4):54-58.
LI Jian,LUO Xia,SHAN Xiuqin,et al.Natural gas accumulation in the Upper Paleozoic of Ordos Basin,China[J].Petroleum Exploration and Development,2005,32(4):54-58.
[9] 李仲东,郝蜀民,李良,等.鄂尔多斯盆地上古生界气藏与深盆气藏特征对比[J].石油与天然气地质,2009,30(2):149-155.
LI Zhongdong,HAO Shumin,LI Liang,et al.Comparison between the Upper Paleozoic gas reservoirs in Ordos Basin and deep basin gas reservoirs[J].Oil & Gas Geology,2009,30(2):149-155.
[10] 杨兴业,何生.超压封存箱的压力封闭机制研究进展综述[J].地质科技情报,2010,29(6):66-71.
YANG Xingye,HE Sheng.Mechanisms for abnormal pressure seal in pressure compartments:a review[J].Bulletin of Geological Science and Technology,2010,29(6):66-71.
[11] 李仲东,郝蜀民,李良,等.鄂尔多斯盆地上古生界压力封存箱与天然气的富集规律[J].石油与天然气地质,2007,28(4):466-472.
LI Zhongdong,HAO Shumin,LI Liang,et al.Compartments in the Upper Paleozoic of northern Ordos basin and their relationship with gas enrichment[J].Oil & Gas Geology,2007,28(4):466-472.
[12] 李明瑞,窦伟坦,蔺宏斌,等.鄂尔多斯盆地东部上古生界致密岩性气藏成藏模式[J]. 石油勘探与开发,2009,36(1):56-61.
LI Mingrui,DOU Weitan,LIN Hongbin,et al.Model for tight lithologic gas accumulation in Upper Palaeozoic,east of Ordos Basin[J].Petroleum Exploration and Development,2009,36(1):56-61.
[13] 刘新社.鄂尔多斯盆地东部上古生界岩性气藏形成机理[D].西安:西北大学,2008.
LIU Xinshe.The accumulation mechanism of lithologic gas reservoir of the upper Paleozoic in eastern Ordos Basin[D].Xi′an:Northwest University,2008.
[14] 李仲东,惠宽洋,李良,等.鄂尔多斯盆地上古生界天然气运移特征及成藏过程分析[J].矿物岩石,2008,28(3):77-83.
LI Zhongdong,HUI Kuanyang,LI Liang,et al.Analysis of characteristics of gas migration and reservoir-forming in the upper Paleozoic of northern Ordos Basin[J].Journal of Mineralogy and Petrology,2008,28(3):77-83.
[15] 李浩.鄂尔多斯盆地中部上古生界气源岩研究[D].西安:西北大学,2015.
LI Hao.Research of source rocks in the Upper Paleozoic of central Ordos Basin[D].Xi′an:Northwest University,2015.
[16] 李浩,任战利,高海仁,等.延长气田上古生界气源岩评价及生排烃特征[J].天然气工业,2015,35(4):33-39.
LI Hao,REN Zhanli,GAO Hairen,et al.Quality evaluation and hydrocarbon generation-expulsion characteristics of source rocks in Upper Paleozoic in the Yanchang Gasfield, Ordos Basin[J].Natural Gas Industry,2015,35(4):33-39.
[17] 李浩,任战利,陈西泮,等.陕北斜坡东部上古生界气源岩地球化学特征[J].西北大学学报(自然科学版),2015,45(5):795-800.
LI Hao,REN Zhanli,CHEN Xipan,et al.Geochemical features of natural gas source rock in the Upper Paleozoic in the east part of north Shaanxi slope[J].Journal of Northwest University(Natural Science Edition),2015,45(5):795-800.
[18] 李浩,任战利,陈西泮,等.延长气田马家沟组气源岩有机地球化学特征[J].非常规油气,2016,3(3):9-14.
LI Hao,REN Zhanli,CHEN Xipan,et al.Geochemical characteristics of Majiagou Formation source rocks in the Yanchang Gas Field[J].Unconventional Oil & Gas,2016,3(3):9-14.
[19] 何自新.盆地演化与油气成藏特征[M].北京:石油工业出版社,2003:121-134.
HE Zixin.Basin evolution and hydrocarbon accumulation characteristics[M].Beijing:Petroleum Industry Press,2003:121-134.
[20] 王震亮,张立宽,孙明亮,等.鄂尔多斯盆地神木-榆林地区上石盒子组—石千峰组天然气成藏机理[J].石油学报,2004,25(3):37-43.
WANG Zhenliang,ZHANG Likuan,SUN Mingliang,et al.Natural gas accumulation mechanism in Upper Shihezi and Shiqianfeng Formations of Shenmu-Yulin District in northeastern Ordos Basin[J].Acta Petrolei Sinica,2004,25(3):37-43.
[21] 郝蜀民,陈召佑,李良.鄂尔多斯盆地大牛地气田致密砂岩气成藏理论与勘探实践[M].北京:石油工业出版社,2011:18-21.
HAO Shumin,CHEN Zhaoyou,LI Liang.Accumulation theory and exploration practice of tight sandstone gas in Daniudi Gas Field,Ordos Basin[M].Beijing:Petroleum Industry Press,2011:18-21.