石油与天然气地质 ›› 1984, Vol. 5 ›› Issue (3): 285-296.doi: 10.11743/ogg19840312

• 工作研究 • 上一篇    下一篇

对贵州油气普查勘探工作的认识与评价

刘向   

  1. 地质矿产部西南石油地质局
  • 收稿日期:1984-02-07 出版日期:1984-09-25 发布日期:2012-01-16

SOME KNOWLEDGE AND ASSESSMENT OF GUIZHOU PETROLEUM PROSPECTING

Liu Xiang   

  1. Southwestern Bureau of Petroleum Geology, Ministry of Geology and Mineral Resources
  • Received:1984-02-07 Online:1984-09-25 Published:2012-01-16

摘要:

贵州油气普查勘探的对象有两个领域,一为赤水小区的中生代陆相碎屑沉积,二为广大地区的古生代海相碳酸盐沉积。鉴于世界上已知油气田中,海相碳酸盐岩类型占的比重很大,又有凯里翁项及其它地区众多的油气显示十分引人注目,故曾把贵州作为我国寻找海相碳酸盐岩类型油气田主要地区之一。

Abstract:

Guizhou is representative of those provinces in southern China where oil and gas reservoirs related to Palaeozoic marine carbonates might take place.Prospecting work for oil and gas has been carried out for 28 Nears since 1956.To summarize achievements obtained in these years,the author has analized both positive and negative conditions for oil prospecting.In view of geotectonic and paleogeographic conditions,Guizhou Province obviously has better struc-tural traps,and good source rocks which should be quite productive and could provide great amount of petroleum.However,it has also some negative factors,such as strong crustal disturbance,uplifting and folding occurred in the later stage of geological history,and resulting in sebsequent intensive erosion and extra exposure of target formations,besides of aged source rocks and extraor-dinary maturity of organic substance as well as poor time conjunction of oil generation with formation of structural traps.Therefore,discovery of commer-cial oil reservoirs could hardly be expected;however,it is still prospective to find some gas fields.While analizing experiences obtained in searchingfor oil and gas,the author suggested that:1)plans should be worked out based on the petroleum geology of the target area proper,and no experiences introduced from abroad could be used stiffly;2)local experience should be used only in combination with the regional ones,pay more attention to fundamental geological wo,no need to be eager for success,and do not treat the complicated problem of petroleum geology in an isolated and one-sided attitude;3)grass-roots unit of geological administration should be established according to the natural geological unit,neither to have its functioning at the limitation of province and such political boundary nor operating changefully;4)different specialities should work jointly with their techniques being continually renewed.Finally,the author has made some recommendations about plans of explora-tion task from now on.