摘要
地压气承受地压,以四种形式存在于地下,由于高温高压的特定环境,它作为非常规天然气具有开采价值。它形成的地质背景是深、热、高压、海相、快速沉降的年青盆地。莺歌海盆地七条勘探成果说明盆地深部蕴藏地压气,乐东30—1砂岩体是其一例。
Geopressured gas consists of 4 kinds of natural gas, namely, dissolved gas and free gas in pore water of sandstone body, gas cap in sandstone body and natural gas in pore water of mudstone close to a sandstone body. Geopressured gas exists underground in these 4 forms, and is worth extracting due to being a non-conventional natural gas. It is formed at large depth and under high temperature and high pressure in Middle Miocene or Pleistocene layers in rapid-subsidence marine basins. Explorations in the Yinggehai Basin indicate that geopressured gas has been formed at the deep part of the basin. Ledong 30-1 (sandstone body) is an example.
出处
《海洋地质与第四纪地质》
CAS
CSCD
北大核心
1992年第1期1-14,共14页
Marine Geology & Quaternary Geology
关键词
地压
天然气
莺歌海盆地
非常规
geopressured gas non-conventional natural gas Yingge-hai Basin petroleum geology
