中石油探明天然气储量状况及变化特点

Current Situation and Changing Characteristics of Natural Gas Proved Reserves in Petro China

通过分析中国石油天然气股份有限公司(以下简称"中石油")2000年以来年度新增天然气探明地质储量变化特点,指出随着中石油不断加大勘探投入,天然气勘探进入快速发展阶段,探明天然气储量持续高位增长,大规模储量区块不断涌现,新增储量向深层-超深层方向发展,储量层位以古生界、中生界为主,勘探领域呈现出优势方向(致密砂岩、碳酸盐岩、逆冲构造带为主)突出、多领域(火山岩、生物气、断陷盆地等)同时开花的新局面。根据中国石油天然气储量增长特点及变化趋势预测:古老层系、深层-超深层是今后勘探的主要方向;致密砂岩、碳酸盐岩、逆冲构造带是天然气主要勘探领域;大规模、低渗透-特低渗透仍将是新增探明天然气储量主要特征。

The analyses of natural gas proved reserves in PetroChina from 2000 to 2012 showed that the natural gas exploration has entered into a fast development stage,with the continuous growth of explorative investment.The proved natural gas reserves were keeping a high growth,large scale reserves blocks were constantly emerging,and more and more newly incremental gas reserves have been found from the deep-and super-deep reservoirs.These gas-bearing horizons were dominated by the Paleozoic and Mesozoic,and the explorative domains were mainly in areas with tight sandstone,carbonate rock and thrust structural belt,including volcanic rock,biogenic gas and faulted basin,etc.It is predicted by the natural gas growth characteristics and changing tendency from PetroChina that the ancient strata and deep-super deep reservoirs are targets for natural gas exploration in future,tight sandstone,carbonate rock and thrust structural belt are the main domains,and large scale and low-and super-low permeability reserves are still the main features of the newly incremental natural gas reserves.