Jurassic Yan'an Formation reservoir rocks in the Maling oil field, Ordos Basin
-
摘要: 侏罗系延安组是鄂尔多斯盆地马岭油田的主力油层之一。通过岩心观察、薄片鉴定、扫描电镜观察等，研究马岭油田侏罗系延安组储层特征及其控制因素。结果表明，马岭油田延安组储层纵向上自延10期至延4+5期，其沉积相由辨状河相演化为网状河三角洲相。受沉积相影响，延10至延4+5油层组碎屑岩石英含量逐渐减少、长石含量增加，碎屑岩粒度变细，储层厚度变薄。马岭油田各探区储层物性受物源影响，近物源区如北区、南区、镇原区的储层物性较好。上里塬区位于河流下游区，碎屑岩粒度细，储层物性较差。研究区储层的成岩作用程度较低，压实作用和胶结作用使储层物性变差，溶蚀作用则改善了储层物性。Abstract: The Jurassic Yan'an Formation reservoir rocks occur as one of the main oil reservoirs of the Maling oil field, Ordos Basin. The characteristics and controlling factors are discussed on the basis of core, thin section and SEM analysis. Vertically, the Jurassic Yan'an Formation reservoir rocks in the Maling oil field are graded from the Yan 10 oil reservoirs upwards into the Yan 4 + 5 oil reservoirs, and the sedimentary facies has witnessed the evolution from the braided stream facies to the anastomosed river-delta facies. From the Yan 10 oil reservoirs to the Yan 4 + 5 oil reservoirs, the quartz contents in the clastic rocks gradually decrease and the feldspar contents gradually increase. Correspondingly, the grain sizes of the clastic rocks become finer, and the reservoir thickness becomes thinner upwards. The physical properties of the reservoir rocks are generally influenced by the source areas. For instance, the North area, South area and Zhenyuan area near the provenances have good physical properties, while the Shangliyuan area located in the lower reaches of the river has relatively poor physical properties. The reservoir rocks in the study area are now in the lower diagenetic degrees, i. e., from the early diagenetic stage B to the late diagenetic A. The compaction and cementation lead to the poor physical properties, and the dissolution leads to the good physical properties.
-
Keywords:
- Ordos Basin /
- Maling oil field /
- Yan'an Formation /
- reservoir rock /
- controlling factor
-
-
[1] 雷启鸿,高琼瑶,成良丙,等. 鄂尔多斯盆地马岭地区长8油层组物源及沉积展布特征[J]. 岩性油气藏,2015,27(2):70-76+91. [2] 卜军,李文厚,曾明,等. 鄂尔多斯盆地陇东地区中侏罗统延9油层组储层成岩作用及对孔隙的影响[J]. 石油地质与工程, 2010,24(3):24-27. [3] 何金先,段毅,张晓丽,等. 鄂尔多斯盆地林镇地区延安组延9油层组地层对比与沉积微相展布[J]. 天然气地球科学, 2012,23(2):291-298 [4] 明红霞,孙卫,张龙龙. 马岭油田北三区延1012储层特征及其控制因素[J]. 地质与勘探,2015,51(2):395-404. [5] 李剑齐,李建廷,王轶平,等. 马岭油田北三区延10储层微观特征分析[J]. 石油天然气学报,2007,29(3):377-379. [6] 马春林,张君学,王钧科,等. 马岭油田P167井区延10油藏特征及有利区预测[J]. 石油天然气学报,2012,34(9):170-172. [7] 段毅,张胜斌,郑朝阳,等. 鄂尔多斯盆地马岭油田延安组原油成因研究[J]. 地质学报,2007,81(10):1407-1415. [8] 郭正权,张立荣,楚美娟,等. 鄂尔多斯盆地南部前侏罗纪古地貌对延安组下部油藏的控制作用[J]. 古地理学报,2008,10(1):63-71. [9] 何文祥,许雅,刘军锋,等. 马岭油田北三区河流相储层构型综合地质研究[J]. 石油学报,2010,31(2):274-279. [10] 张吉来,朱广社,陈德平,等. 马岭油田北三区延安组Y8~Y10油层沉积微相研究[J]. 石油天然气学报,2006,28(3):185-186. [11] 朱世全,周志平,魏红玫. 马岭油田延安组延十段小层沉积相研究[J]. 江汉石油学院学报,2003,(S1):6-7+4. [12] 王春宇,张志国,李兆明,等. 鄂尔多斯盆地马岭油田高分辨率层序地层分析及沉积体系研究[J]. 地质力学学报,2007,13(1):70-77+96. [13] 段毅,吴保祥,郑朝阳,等. 鄂尔多斯盆地马岭油田延9油层组油气运移研究[J]. 沉积学报,2008,26(2):349-354. [14] 段毅,孙涛,吴保祥,等. 鄂尔多斯盆地马岭油田延10油层组油气运移特征与机理[J]. 成都理工大学学报(自然科学版),2009,36(1):1-7. [15] 李红,柳益群,刘林玉. 鄂尔多斯盆地西峰油田延长组长81低渗透储层成岩作用[J]. 石油与天然气地质,2006,27(2):209-217. [16] 白云云. 马岭北三区延10段沉积相类型及平面展布特征研究[J]. 中国锰业,2018,36(4):98-101. [17] 任晓霞,李爱芬,王永政,等. 致密砂岩储层孔隙结构及其对渗流的影响-以鄂尔多斯盆地马岭油田长8储层为例[J]. 石油与天然气地质,2015,36(5):774-779. [18] 胡宗全,周新科,朱建辉. 华北东部地区上古生界生烃潜力分析[J]. 石油勘探与开发,2006,33(6):697-701. [19] 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/OL]. 沉积学报:1-12[2019-06-24]. [20] 杨永恒,孙国强,王晔桐,等. 柴达木盆地北缘平台地区路乐河组沉积环境与成岩流体特征[J/OL]. 沉积学报:1-11.[2019-06-25]. [21] 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. [22] 杨红梅,汪满福,杨麟科,等. 青西油田下白垩统下沟组泥云岩储集层特征[J]. 石油勘探与开发,2004,31(6):47-50. [23] 陈国俊,吕成福,王琪,等. 珠江口盆地深水区白云凹陷储层孔隙特征及影响因素[J]. 石油学报,2010,31(4):566-572.
计量
- 文章访问数: 129
- HTML全文浏览量: 0
- PDF下载量: 155
下载:
