西南石油大学学报(自然科学版)

• 地质勘探 • 上一篇    下一篇

油气“倒灌”的物理模拟及其石油地质意义

王永诗1,单亦先2,劳海港3   

  1. 1. 中国石化胜利油田地质科学研究院,山东东营257015
    2. 中国石油大学(华东)地球科学与技术学院,山东青岛266580
    3. 河北联合大学矿业工程学院,河北唐山063009
  • 出版日期:2014-04-01 发布日期:2014-04-01
  • 基金资助:

    国家重大科技专项“渤海湾盆地精细勘探关键技术”(2011ZX05006)。

Physical Simulation of Oil and Gas Backflow and Its
Geological Significance

Wang Yongshi1, Shan Yixian2, Lao Haigang3   

  1. 1. Geoscience Research Institute of Shengli Oilfield Company,SINOPEC,Dongying,Shandong 257015,China
    2. School of Geosciences,China University of Petroleum(East China),Qingdao,Shandong 266580,China
    3. College of Mining Engineering,Hebei United University,Tangshan,Hebai 063009,China
  • Online:2014-04-01 Published:2014-04-01

摘要:

勘探实践证实,车镇凹陷存在油气“倒灌”运移成藏现象。物理模拟实验也证实,油气运移过程中,存在以断
裂为运移通道和以骨架砂体为运移通道的两种油气“倒灌”类型。以断裂为运移通道的油气“倒灌”,断裂是油气“倒
灌”的重要通道,而分子置换是油气“倒灌”的形成机制,其所形成的油气藏规模较小;以骨架砂体为运移通道的油气
“倒灌”,压力差是控制油气向下运移的重要动力,油气“倒灌”所需的最大压力取决于与其相关的砂体物性,可形成规
模可观的油气藏。油气“倒灌”的物理模拟为含油气盆地扩大深层油气勘探提供了理论支持。

关键词: 油气&ldquo, 倒灌&rdquo, ;断裂;骨架砂体;分子置换;压力差

Abstract:

The exploration practice proves that the phenomenon of the oil and gas backflow exists in Chezheng Depression,
the physical simulation experiments of the oil and gas accumulation confirmed that there are two types of oil and gas intrusion
in hydrocarbon migration process,i.e. fracture as migration channel and the sand body framework as migration channel,the
former is the important channel of the oil and gas backflow,however molecular replacement is the formation mechanism,and
the oil and gas pool is of small size. the latter in sand body framework for migration of oil and gas intrusion,is that pressure
difference controlling petroleum downward migration is an important driving force. The desired maximum pressure depends on
the related physical property of sandbody,and it can form large-scale oil and gas reservoirs. The research provides theoretical
support for the expansion of deep oil and gas exploration in petroliferous basin.

Key words: oil and gas backflow, fracture, sand body, molecular replacement, pressure difference