石油学报 ›› 2003, Vol. 24 ›› Issue (3): 6-10.DOI: 10.7623/syxb200303002

• 地质勘探 • 上一篇    下一篇

陕北地区大型三角洲油藏富集规律及勘探技术应用

杨华1,3, 付金华2,3, 喻建3   

  1. 1. 成都理工大学, 四川成都, 610059;
    2. 西北大学, 陕西西安, 710069;
    3. 长庆油田分公司, 陕西西安, 710021
  • 收稿日期:2003-01-05 修回日期:2003-01-10 出版日期:2003-05-25 发布日期:2010-05-21
  • 作者简介:杨华,男,1963年9月生,1984年毕业于西南石油学院,现为长庆油田分公司副总经理,成都理工大学在读博士研究生.
  • 基金资助:
    中国石油天然气股份公司科技攻关项目.

Oil reservoir enrichment patterns of large delta systems and application of exploration techniques in Shanbei area

YANG Hua1,3, FU Jin-hua2,3, YU Jian3   

  1. 1. Chengdu University of Technology, Chengdu 610059, China;
    2. Northwest University, Xi'an 710069, China;
    3. Changqing Oilfield Branch Company, Petro China, Xi'an 710021, China
  • Received:2003-01-05 Revised:2003-01-10 Online:2003-05-25 Published:2010-05-21

摘要: 陕北地区发育大型三角洲沉积体,储集体主要以三角洲分流河道、河口坝沉积为主,主砂体厚度大于15m,砂体在纵向上可对比追踪,平面上复合连片.该储层由于次生浊沸石溶解在低渗透背景上而形成了相对高渗区.形成的三角洲油藏具有含油显示普遍、工业产层多、油气资源丰富的特点,具备形成大型油田的物质基础.对该区的石油勘探成果、地质条件及勘探技术的应用进行了综合分析,阐述了探明12亿t规模的石油地质储量的基础及采取的勘探技术措施.

关键词: 陕北地区, 三角洲沉积体, 分流河道, 河口坝沉积, 油气富集, 勘探技术

Abstract: Large delta deposition systems were developed extensively in Shanbei area.The delta distribution channel and the river mouth bar were dominated in Chang 6 period.The main sandstone with over 15 meters in thickness can be correlated vertically and connected as a complex laterally.The relative high-permeability zones were resulted from the dissolution of authigenic laumontite on the low-permeability background.The delta oil reservoirs formed in this area keep the features of universal gas-bearing shows,more commercial oil pays,and richness in petroleum resources.It has the material bases for forming large oilfields.The groundworks for ascertaining 1200 million tons of oil in place and some exploration techniques were described.The petroleum exploration achievements,geological conditions and the exploration techniques applied in the area were summarized.

Key words: Shanbei area, delta deposits, distribution channel, river mouth bar, oil and gas accumulation, exploration techniques

中图分类号: