The Jurassic clastic reservoirs in the Jiulongshan area, northern Qaidam Basin, Qinghai
-
摘要: 通过对九龙山地区重点探井岩心样品的观测、薄片鉴定、扫描电镜分析，结合储层物性和压汞数据，系统研究了九龙山地区侏罗系碎屑岩储层的岩石学特征、物性特征、成岩作用及孔隙演化规律。结果表明，碎屑岩储层主要以粗砂岩、中砂岩和细砂岩为主；胶结物类型主要为碳酸盐类胶结物、硅质胶结和自生黏土矿物；孔隙类型以残余粒间孔隙和溶蚀孔隙为主，孔隙与吼道匹配关系较好；储集岩成分成熟度低、结构成熟度中等-差；颗粒间主要以点-线接触为主；储集岩成岩作用较强，主要处于中成岩阶段A期。Abstract: The petrological, physical and diagenetic characteristics and porosity evolution of the Jurassic clastic reservoirs are based on the examination of the representative core samples and thin sections, scanning electron photomicrographs, physical properties and mercury-injection data on the Jurassic clastic reservoirs in the Jiulongshan area, northern Qaidam Basin, Qinghai. The Jurassic clastic reservoirs consist mainly of coarse-grained sandstones, medium-grained sandstones and fine-grained sandstones. The cement types contain the carbonate cements, siliceous cements and authigenic clay minerals. The porosity types include the residual primary intergranular pores and solution openings, and the porosity and permeability are well correlated. The reservoir rocks have low compositional maturity and moderate to poor textural maturity, with the point-line contact types. At present, the reservoir rocks are tentative to be in Phase A of the anadiagenetic stages.
-
Keywords:
- reservoir rock /
- diagenesis /
- Jurassic /
- Jiulongshan area
-
-
[1] 王牧.柴达木盆地九龙山地区石油地质特征研究[D].青岛:中国石油大学(华东),2013. [2] 孙国强,王海峰,邹开真,等.柴北缘九龙山地区侏罗系砂岩中碳酸盐胶结物特征及意义[J].天然气地球科学,2014,25(9):257-265. [3] 刘伟明,孙国强,郭佳佳,等.柴北缘西段古近纪物源体系分析[J].沉积与特提斯地质,2018,38(1):53-61. [4] 林洪,李凤杰,李磊,等.柴达木盆地北缘古近系重矿物特征及无缘分析[J].天然气地球科学,2014,25(4):532-541. [5] 陈吉,史基安,龙国徽,等.柴北缘古近系-新近系沉积相特征及沉积模式[J].沉积与特提斯地质,2013,33(3):16-26. [6] 孙国强,杜忠明,贾艳艳,等.柴达木盆地北缘西段古近纪以来沉积模式研究[J].岩性油气藏,2012,24(4):13-18. [7] 仵宗涛,孙国强,王锋,等.柴北缘平台地区下干柴沟组下段碳酸盐胶结物特征及意义[J].沉积与特提斯地质,2016,36(4):30-36. [8] 张杰,夏维民,徐丽,等.柴北缘九龙山地区侏罗系致密砂岩储层成因分析[J].天然气地球科学,2014,(s1):71-78. [9] 付锁堂.柴达木盆地油气资源战略调查及评价[M].北京:科学出版社,2012. [10] 吕宝凤,张越青,杨书逸.柴达木盆地构造体系特征及其成盆动力学意义[J].地质论评,2011,57(2):167-174. [11] 李猛.柴达木盆地北缘侏罗系沉积体系与页岩气富集规律[D].北京:中国矿业大学(北京),2014. [12] 王信国,曹代勇,占文锋,等.柴达木盆地北缘中、新生代盆地性质及构造演化[J].现代地质,2006,20(4):592-596. [13] 孙洪杰,雷敏,王大华,等.柴达木盆地北缘东部侏罗系发育特征[J].世界地质,2013,32(3):531-538. [14] 金振奎,齐聪伟,薛建勤,等.柴达木盆地北缘侏罗系沉积相[J].古地理学报,2006,8(2):199-210. [15] 薛光华,杨永泰.柴达木盆地北缘中新生代构造演化与油气的关系[J].大庆石油地质与开发,2002,21(1):35-37. [16] 高先志,陈发景,马达德,等.中、新生代柴达木北缘的盆地类型与构造演化[J].西北地质,2003,36(4):16-24. [17] 胡明毅,沈娇,胡蝶.西湖凹陷平湖构造带平湖组砂岩储层特征及其主控因素[J].石油与天然气地质,2013,34(2):185-191. [18] 张满郎,李熙喆,谢武仁.鄂尔多斯盆地山2段砂岩储层的孔隙类型与孔隙结构[J].天然气地球科学,2008,19(4):480-486. [19] 朱筱敏.沉积岩石学[M].北京:石油工业出版社,2008. [20] 吴志雄,张永庶,邹开真,等.柴北缘鱼卡-九龙山地区侏罗系储层特征分析[J].岩性油气藏,2013,25(1):63-68. [21] 陈登钱,龙安林,赵国忠,等.柴达木盆地九龙山地区侏罗系储层特征研究[J].青海石油,2014,(2):20-27.
计量
- 文章访问数: 428
- HTML全文浏览量: 0
- PDF下载量: 566
下载:
