吉林大学学报(地球科学版) ›› 2017, Vol. 47 ›› Issue (1): 34-47.doi: 10.13278/j.cnki.jjuese.201701104

• 地质与资源 • 上一篇    下一篇

塔河油田二区奥陶系优势储集体特征及控制因素

范卓颖, 林承焰, 鞠传学, 韩长城, 熊陈微   

  1. 中国石油大学地球科学与技术学院, 山东 青岛 266580
  • 收稿日期:2016-04-05 出版日期:2017-01-26 发布日期:2017-01-26
  • 作者简介:范卓颖(1987-),女,博士研究生,主要从事储层测井评价及油藏描述研究.E-mail:114531680@qq.com
  • 基金资助:
    国家自然科学基金项目(41404086);国家科技重大专项(2011ZX05020-008);山东省自然科学基金项目(ZR2014DQ007);中国石油天然气股份有限公司科技重大专项(2012E-34-12)

Characteristics of Main Ordovician Reservoir Rocks in Block Two of Tahe Oilfield

Fan Zhuoying, Lin Chengyan, Ju Chuanxue, Han Changcheng, Xiong Chenwei   

  1. College of Geosciences in China University of Petroleum. Qingdao 266580, Shandong, China
  • Received:2016-04-05 Online:2017-01-26 Published:2017-01-26
  • Supported by:
    Supported by National Natural Science Foundation (41404086), National Science and Technology Major Project(2011ZX05020-008), National Natural Science Foundation of Shandong Province(ZR2014DQ007) and National Science and Technology Major Project of CNPC (2012E-34-12)

摘要: 塔河油田二区奥陶系碳酸盐岩油藏储集体类型由缝洞型、高能微孔隙型、压溶孔缝型组成。通过岩心薄片观察并结合地震、测井、录井和试油等资料,查明了受次生溶蚀作用控制的岩溶缝洞型、受高能沉积相带控制的微孔隙型和受压溶作用及白云化作用控制的压溶孔缝型储层的特征和分布,并且识别出溶蚀孔洞、溶蚀缝、构造缝、粒内孔、粒间孔、铸模孔、晶间孔、晶内孔、缝合线和微裂缝10种储集空间。实际上,上述储集体主要为高能沉积相带形成的颗粒灰岩演化而成,这些颗粒灰岩经过埋藏压实和胶结等作用形成了以次生微孔隙为主的微孔隙型储集体,经过压溶和白云岩化作用形成了受成岩演化控制的压溶孔缝型储集体,在塔北奥陶系岩溶期形成了岩溶缝洞型储集体。塔河油田二区南部受沉积相展布和成岩作用影响,颗粒灰岩和云斑状灰岩发育;北部古隆起风化剥蚀作用较强,发育大型溶洞储层;东部斜坡带古河流发育,溶蚀缝洞储层多沿古河道分布;西部受深大断裂控制,溶蚀孔洞沿断裂垂向发育。

关键词: 碳酸盐岩, 储集体, 塔河油田, 奥陶系

Abstract: The main types of Ordovician carbonate reservoirs consist of fracture-cavity type, high energy pore type, and pore-fracture type by pressure solution in block two of Tahe oilfield. Based on core, thin section, seismic, well logging, and well test data, we analyzed characteristics and distribution of each type of reservoir. There are 10 types of reservoir spaces, including dissolved pore, eroded fracture, tectonic fracture, inter particle pore, intra particle pore, moldic pore, intercrystal pore, stylolite, and micro-fracture in carbonate reservoirs. In fact, these reservoirs are all evolved from grainstones formed in high energy sedimentary belts. Grainstones evolved into secondary micro-pore dominating reservoirs by compaction and cementation, and they also formed pressolution pore-fracture reservoirs by pressolution and dolomitization, which developed dissolved fracture-cavity reservoirs. Affected by distribution of sediment facies and diagenesis, it develop grainstone and cloudy limestone in the south. Due to strong weathering and denudation in the north, it formed reservoirs with large dissolution cavities. With developing of ancient rivers at eastern slope, dissolution pores and cavities developed along the ancient river. Controlled by deep faults in the west, dissolution pores and cavities vertically developed along the fracture.

Key words: carbonate, reservoir, Tahe oilfield, Ordovician

中图分类号: 

  • P618.13
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