玛南斜坡区上乌尔禾组弱胶结砂砾岩储层特征及控制因素

doi:10.3969/j.issn.1006-6535.2022.01.004

摘要/Abstract

摘要： 为明确准噶尔玛南斜坡区二叠系上乌尔禾组弱胶结砂砾岩储层对油气富集的影响,在岩心观察、薄片鉴定和分析化验等实验资料的基础上,对研究区储层特征和控制因素进行研究。研究结果表明:上乌尔禾组储层为泥质杂基充填弱胶结低孔低渗砂砾岩,结构成熟度和成分成熟度均较低,孔隙类型以剩余粒间孔为主,发育大—中孔中—细喉道型、小—微孔细喉道型和微孔—裂缝型3类储集空间;一类储层平均孔隙度大于9.0%,平均渗透率大于10.000 mD,具大—中孔中—细喉道的孔隙结构特征。储层的质量受沉积环境直接控制,三角洲扇前缘水下分流河道微相为优质储层沉积相。古地貌特征间接影响储层物性,古沟槽区水动力强,泥质含量低,物性好。研究区成岩作用以压实作用为主,对储集空间改造有限,砾石支撑抑制压实作用使原生粒间孔得以大量保存。研究结果丰富了玛南斜坡区二叠系上乌尔禾组砂砾岩储层特征,对后期砂砾岩储层的深入研究具有一定的指导意义。

关键词: 储层特征, 弱胶结砂砾岩, 泥质含量, 上乌尔禾组, 准噶尔盆地

Abstract: In order to identify the influence of weakly cemented glutenite reservoirs in the Permian Upper Urho Formation, south slope of Mahu Sag, Junggar Basin, the reservoirs in the study area were studied for reservoir characteristics and controlling factors on the basis of experimental data such as core observation, slice identification, and analysis of chemical examinations. The results of the study showed that the reservoir in the Upper Urho Formation was a weakly cemented glutenite reservoir with low porosity and permeability, mudstone filling at bottom, low structural maturity and composition maturity. The type of pores was dominated by residual inter-granular pores, and there are three types of storage spaces: 1) macro-porous and meso-porous medium to thin throats, 2) micro-porous thin throats, and 3) micropores and fractures; the average porosity of the first type of reservoir was greater than 9.0% and the average permeability was greater than 10.000 mD, showing the pore structure features of macro-porous and meso-porous medium to thin throats. The reservoir quality is directly controlled by the sedimentary environment, and the microfacies in subaqueous distributary channel at the front edge of the delta fan were high-quality reservoir sedimentary facies. The palaeogeomorphic characteristics indirectly affect the reservoir physical properties, with strong hydrodynamics, low shale content and good physical properties in the paleotrench area. The diagenesis in the study area was dominated by compaction, and the improvement of the reservoir space was limited. The gravel support inhibited the compaction, so that a large number of primary inter-granular pores could be preserved. The results enrich the glutenite reservoir characteristics of Permian Upper Urho Formation, south slope of Mahu Sag, and have a certain guiding significance for the further study of glutenite reservoir.

Key words: reservoir characteristics, weakly cemented glutenite, shale content, Upper Urho Formation, Junggar Basin

中图分类号:

TE122

王然, 郑孟林, 杨森, 赵辛楣, 姜懿洋, 万敏. 玛南斜坡区上乌尔禾组弱胶结砂砾岩储层特征及控制因素[J]. 特种油气藏, 2022, 29(1): 23-30.

Wang Ran, Zheng Menglin, Yang Sen, Zhao Xinmei, Jiang Yiyang, Wan Min. Characteristics and Controlling Factors of Weakly Cemented Glutenite Reservoir in Permian Upper Urho Formation, South Slope of Mahu Sag[J]. Special Oil & Gas Reservoirs, 2022, 29(1): 23-30.

参考文献

[1] AMTHOR J E,OKKERMAN J.Influence of early diagenesis on reservoir quality of Rotliegende sandstones,northern Netherlands[J].AAPG Bulletin,1988,82(12): 2246-2265.
[2] 梁爽,杜社宽.准噶尔盆地中拐凸起侏罗系三工河组储层特征及控制因素[J].沉积学报,2019,37(6):1269-1279.
LIANG Shuang,DU Shekuan.Reservoir characteristics and factors controlling the Jurassic Sangonghe Formation in Zhongguai Uplift,Junggar Basin[J].Acta Sedimentologica Sinica,2019,37(6):1269-1279.
[3] 许琳,常秋生,陶亲娥,等.玛北斜坡三叠系百口泉组储层特征及控制因素[J].地质论评,2017,63(增刊1):277-278.
XU Lin,CHANG Qiusheng,TAO Qin′e,et al.Reservoir characteristics and control factors of Baikouquan Formation in Triassic, Mabei Oilfield,Junggar Basin[J]. Geological Review,2017,63(S1):277-278.
[4] 邹妞妞,张大权,钱海涛,等.准噶尔盆地玛北斜坡区扇三角洲砂砾岩储层主控因素[J].岩性油气藏,2016,28(4):24-33.
ZOU Niuniu,ZHANG Daquan,QIAN Haitao,et al.Main controlling factors of glutenite reservoir of fan delta in Mabei Slope,Junggar Basin[J].Lithologic Reservoirs,2016,28(4):24-33.
[5] 靳军,康逊,胡文瑄,等.准噶尔盆地玛湖凹陷西斜坡百口泉组砂砾岩储层成岩作用及对储集性能的影响[J].石油与天然气地质,2017,38(2):323-333,406.
JIN Jun,KANG Xun,HU Wenxuan,et al.Diagenesis and its influence on coarse clastic reservoirs in the Baikouquan Formation of western slope of the Mahu Sag,Junngar Basin[J].Oil & Gas Geology,2017,38(2):323-333,406.
[6] 付爽,庞雷,许学龙,等.准噶尔盆地玛湖凹陷下乌尔禾组储层特征及其控制因素[J].天然气地球科学,2019,30(4):468-477.
FU Shuang,PANG Lei,XU Xuelong,et al.The characteristics and their controlling factors on reservoir in Permian Lower Urho Formation in Mahu Sag,Junggar Basin[J].Natural Gas Geoscience,2019,30(4):468-477.
[7] 张顺存,黄立良,冯右伦,等.准噶尔盆地玛北地区三叠系百口泉组储层成岩相特征[J].沉积学报,2018,36(2):354-365.
ZHANG Shuncun,HUANG Liliang,FENG Youlun,et al.Diagenetic facies of Triassic Baikouquan Formation in Mabei Area,Junggar Basin[J].Acta Sedimentologica Sinica,2018,36(2):354-365.
[8] MARCHAND A M E,SMALLEY P C,HASELDINE R S,et al.Note on the importance of hydrocarbon fill for reservoir quality prediction in sandstones[J].AAPG Bulletin,2002,86(9):1561-1571.
[9] 匡立春,唐勇,雷德文,等.准噶尔盆地玛湖凹陷斜坡区三叠系百口泉组扇控大面积岩性油藏勘探实践[J].中国石油勘探,2014,19(6):14-23.
KUANG Lichun,TANG Yong,LEI Dewen,et al.Exploration of fan-controlled large-area lithologic oil reservoirs of Triassic Baikouquan formation in slope zone of Mahu Sag in Junggar Basin[J].China Petroleum Exploration,2014,19 (6):14-23.
[10] 张昌民,尹太举,唐勇,等.准噶尔盆地西北缘及玛湖凹陷沉积储层研究进展[J].古地理学报,2020,22(1):129-146.
ZHANG Changmin,YIN Taiju,TANG Yong,et al.Advances in sedimentological reservoir research in Mahu Sag and northwest margin of Junggar Basin[J].Journal of Palaeogeography,2020,22(1):129-146.
[11] 隋风贵.准噶尔盆地西北缘构造演化及其与油气成藏的关系[J].地质学报,2015,89(4):779-793.
SUI Fenggui.Tectonic evolution and its relationship with hydrocarbon accumulation in the northwest margin of Junggar Basin[J].Acta Geologica Sinica,2015,89(4): 779-793.
[12] 谭开俊,潘建国,任培罡,等.准噶尔盆地中拐地区古沟槽特征及油气成藏条件[J].石油地质与工程,2006,20(6):10-11.
TAN Kaijun,PAN Jianguo,REN Peigang,et al.The paleochannel characteristics and formation condition in the Zhongguai Area of Junggar Basin[J].Petroleum Geology & Engineering,2006,20(6):10-11.
[13] 杨帆,卫延召,阿布力米提,等.准噶尔盆地环玛湖凹陷中-上二叠统有利储盖组合优选[J].新疆石油地质,2016,37(2):131-137.
YANG Fan,WEI Yanzhao,Abulimiti,et al.Optimization of favorable reservoir-caprock assemblages of Middle-Upper Permian in Mahu Sag, Junggar Basin[J].Xinjiang Petroleum Geology,2016,37(2):131-137.
[14] 唐勇,徐洋,李亚哲,等.玛湖凹陷大型浅水退覆式扇三角洲沉积模式及勘探意义[J].新疆石油地质,2018,39(1):16-22.
TANG Yong,XU Yang,LI Yazhe,et al.Sedimentation model and exploration significance of large-scaled shallow retrogradation fan delta in Mahu Sag[J].Xinjiang Petroleum Geology,2018,39(1):16-22.
[15] 支东明,唐勇,郑孟林,等.玛湖凹陷源上砾岩大油区形成分布与勘探实践[J].新疆石油地质,2018,39(1):1-8,22.
ZHI Dongming,TANG Yong,ZHENG Menglin,et al.Discovery,distribution and exploration practice of large oil provinces of above-source conglomerate in Mahu Sag[J].Xinjiang Petroleum Geology,2018,39(1):1-8,22.
[16] 张昌民,尹太举,唐勇,等.准噶尔盆地西北缘及玛湖凹陷沉积储层研究进展[J].古地理学报,2020,22(1):129-146.
ZHANG Changmin,YIN Taiju,TANG Yong,et al.Advances in sedimentological reservoir research in Mahu Sag and northwest margin of Junggar Basin[J].Journal of Palaeogeography,2020,22(1):129-146.
[17] 王剑,丁湘华,武卫东,等.准噶尔盆地玛湖西斜坡百口泉组储层特征研究[J].科学技术与工程,2016,16(9):142-148.
WANG Jian,DING Xianghua,WU Weidong,et al.Research on reservoir characteristic of Baikouquan Formation in Mahu Western Slope of Junggar Basin[J].Science Technology and Engineering,2016,16(9):142-148.
[18] 张有平,盛世锋,高祥录.玛湖凹陷玛2井区下乌尔禾组扇三角洲沉积及有利储层分布[J].岩性油气藏,2015,27(5):204-210.
ZHANG Youping,SHENG Shifeng,GAO Xianglu.Fan delta sedimentation and favorable reservoir distribution of the lower Urho Formation in Ma 2 Well Block of Mahu Sag[J].Lithologic Reservoirs,2015,27(5):204-210.
[19] 张顺存,黄治赳,鲁新川,等.准噶尔盆地西北缘二叠系砂砾岩储层主控因素[J].兰州大学学报(自然科学版),2015,51(1):20-30.
ZHANG Shuncun,HUANG Zhijiu,LU Xinchuan,et al.Main controlling factors of Permian sandy conglomerate reservoir in the northwestern Junggar Basin[J].Journal of Lanzhou University(Natural Sciences),2015,51(1):20-30.
[20] 谭开俊,王国栋,罗惠芬,等.准噶尔盆地玛湖斜坡区三叠系百口泉组储层特征及控制因素[J].岩性油气藏,2014,26(6):83-88.
TAN Kaijun,WANG Guodong,LUO Huifen,et al.Reservoir characteristics and controlling factors of the Triassic Baikouquan Formation in Mahu slope area, Junggar Basin[J].Lithologic Reservoirs,2014,26(6):83-88.