CHARACTERISTICS AND CONTROLLING FACTORS OF SANDSTONE RESERVOIR OF DONGYING FORMATION IN SHENXIAN DEPRESSION, JIZHONG SUB-BASIN
-
摘要: 冀中坳陷深县凹陷东营组砂岩储层岩石类型以长石岩屑砂岩或岩屑长石砂岩为主,岩石成分成熟度和结构成熟度均较低,反映了近物源和多物源的特征。通过对研究区的岩心化验分析资料、薄片和扫描电镜资料的分析,认为深县凹陷东营组储集空间类型主要包括原生孔隙和次生孔隙两类,其中以原生的粒间孔隙为主。研究区岩性孔渗资料的统计结果表明,储层的物性较好,基本为中高孔中渗型储层,根据深县凹陷储层评价标准,可以将深县凹陷储层分为4类,东营组储层主要是Ⅰ类和Ⅱ类储层。深县凹陷东营组主要为辫状河流相沉积,其沉积作用直接决定着储集砂体的类型、展布范围以及后期成岩改造作用。而储层储集性能主要受原始沉积作用及后期成岩作用共同控制,控制储层孔隙演化的成岩作用主要为机械压实作用和胶结作用。Abstract: The sandstone reservoir of the Dongying Formation in the Shenxian Depression, Jizhong Sub-basin is primarily composed of feldspathic lithic sandstone and lithic sandstone of low maturity. This means that the deposits come from multiple provenances and are close to the provenances. According to the conventional core analysis data, thin sections and scanning electron microscopic (SEM) data, the main pore types of the reservoir include primary and secondary pores, of which the primary intergranular pores dominate. The porosity and permeability data in the study area shows that the reservoir mainly belongs to a kind of high-porosity and mid-permeability. According to the standard for reservoir evaluation in the Shenxian Depression, there are four types of reservoirs, and the reservoirs of Dongying Formation are mainly of type Ⅰand type Ⅱ. The Dongying Formation in the Shenxian Depression is mainly a braided stream facies, which is the key factor controlling the reservoirs sand types, distribution pattern and later stage diagenetic reconstruction. The properties of the reservoirs are controlled by both the processes of deposition and diagenesis. The reservoirs have undergone three types of diagenesis, i. e. mechanic compaction, cementation and dissolution, and the former two are the main factors controlling the pore evolution.
-
Key words:
- sandstone /
- reservoir characteristics /
- controlling factors /
- Shenxian depression /
- Dongying Formation
-
-
[1] 张锐锋, 李先平, 于兴河, 等. 冀中坳陷深县凹陷构造沉积格局与圈闭类型响应关系[J]. 现代地质, 2011, 25(1):62-69.
[ZHANG Ruifeng, LI Xianping, YU Xinghe, et al. The response of petroleum trap types to the structural-depositional pattern in Shenxian depression, Jizhong sub-basin[J]. Geoscience, 2011, 25(1):62-69.]
[2] 梁富康, 于兴河, 李先平, 等. 冀中坳陷深县凹陷的生长断层特点及其对沉积的控制作用[J]. 中国地质, 2011, 38(2):263-270.
[LIANG Fukang, YU Xinghe, LI Xianping, et al. Growth faults in Shenxian depression and their control over the sedimentation[J]. Geology in China, 2011, 38(2):263-270.]
[3] 贾承造, 赵文智, 邹才能, 等. 岩性地层油气藏地质理论与勘探技术[J]. 石油勘探与开发, 2007, 34(3):257-272.
[JIA Chengzao, ZHAO Wenzhi, ZOU Caineng, et al. Geological theory and exploration technology for lithostratigraphic hydrocarbon reservoirs[J]. Petroleum Exploration and Development, 2007, 34(3):257-272.]
[4] 廖远涛, 王华, 王家豪, 等. 黄骅坳陷中区古近系东营组沉积特征及有利勘探区带预测[J]. 古地理学报, 2009, 11(5):561-572.
[LIAO Yuantao, WANG Hua, WANG Jiahao, et al. The Paleogene Dongying Formation in central area of Huanghua Depression:Depositional characteristics and prediction of favorable exploration area[J]. Journal of Palaeogeography, 2009, 11(5):561-572.]
[5] 陈永峤, 于兴河, 周新桂, 等. 东营凹陷各构造区带下第三系成岩演化与次生孔隙发育规律研究[J]. 天然气地球科学, 2004, 15(1):68-74.
[CHEN Yongqiao, YU Xinghe, ZHOU Xingui, et al. Research on diagenetic evolutionary succession and occurrence of secondary porosity of lower Tertiary in different structural belt of Dongying Depression[J]. Natural Gas Geoscience, 2004, 15(1):68-74.]
[6] 钟大康, 朱筱敏, 张枝焕, 等. 东营凹陷古近系砂岩次生孔隙成因与纵向分布规律[J]. 石油勘探与开发, 2003, 20(6):51-53.
[ZHONG Dakang, ZHU Xiaomin, ZHANG Zhihuan, et al. Origin of secondary porosity of Paleogene sandstone in the Dongying sag[J]. Petroleum Exploration and Development, 2003, 30(6):51-53.]
[7] 于兴河. 油气储层地质学基础[M]. 北京:石油工业出版社, 2009:210-257.[YU Xinghe. Petroleum Reservoir Geology[M]. Beijing:Petroleum Industry Press, 2009:210
-257.]
[8] 刘媛媛, 郭彦民, 邹丙方, 等. 辽河油田滩海西部古近系碎屑岩储层特征及主控因素分析[J]. 现代地质, 2012, 26(3):569-574.
[LIU Yuanyuan, GUO Yanmin, ZOU Bingfang, et al. Characteristics and controlling factors of Paleogene clastic rocks in the west sag of the beach area in Liaohe oilfield[J]. Geoscience, 2012, 26(3):569-574.]
[9] 黄胜兵, 叶加仁, 朱红涛, 等. 渤中西环古沟谷与坡折带特征及其对储层的控制[J]. 海洋地质与第四纪地质, 2011, 31(1):119-124.
[HUANG Shengbing, YE Jiaren, ZHU Hongtao, et al. Characteristics of valley-slope break zone in the western circle of the Bozhong depression and its control over reservoir distribution[J]. Marine Geology and Quaternary Geology, 2011, 31(1):119-124.]
[10] 龚建明, 温珍河, 戴春山. 阜新盆地的储层特征及其勘探方向[J]. 海洋地质与第四纪地质, 1998, 18(2):81-90.
[GONG Jianming, WEN Zhenhe, DAI Chunshan. Reservoir characteristics and exploratory targets of Fuxin basin[J]. Marine Geology & Quaternary Geology, 1998, 18(2):81-90.]
[11] 张淑娟, 罗永胜, 刘大听. 冀中坳陷饶阳凹陷留楚油田古近系东营组沉积微相及油气开发意义[J]. 古地理学报, 2008, 10(3):231-239.
[ZHANG Shujuan, LUO Yongsheng, LIU Dating. Sedimentary microfacies of the Paleogene Dongying Formation in Liuchu Oilfield in Raoyang Sag of Central Hebei Depression and its development significance[J]. Journal of Palaeogeography, 2008, 10(3):231-239.]
[12] 胡治华, 申春生, 刘宗宾, 等. 渤海湾L油田东营组储层特征与成岩作用分析[J]. 岩性油气藏, 2012, 24(4):51-55.
[HU Zhihua, SHEN Chunsheng, LIU Zongbin, et al. Reservoir characteristics and diagenesis of Dongying Formationin L oilfield, Bohai Bay[J]. Lithologic Reservoirs, 2012, 24(4):51-55.]
-
计量
- 文章访问数: 986
- PDF下载数: 3
- 施引文献: 0
下载: