柴达木盆地第四系生物气勘探现状及前景分析

Analysis of Present Situation and Prospect of Quaternary Biological Gas Exploration in Qaidam Basin

柴达木盆地第四系生物气区,截至2001年底探明加控制天然气总储量3561×10~8m^3。有效勘探面积约5.63×10~4km^2,资源量约为10000×10~8m^3。从第四系天然气勘探历程、生物气资源量现状、生物气勘探潜力分析、生物气勘探目标及方向等方面阐述了该区第四系生物气勘探现状及前景,并着重强调:丰富的资源条件、巨大的勘探面积、较低的勘探程度是第四系生物气勘探取得成功的重要保证。根据以发现气田的规模及解剖,预测在主力生气凹陷南北斜坡还可找到2～3个1000×10~8m^3的大型气田。该区已成为“西气东输”重要的气源地之一。

By of the end of 2001, the proven and controlled natural gas reserves totaled 3561×10~8m^3 in the Quaternary biological gas zone in Qaidam basin. The effective exploration area is 5.63×10~4km^2 with the total resource volume being 10000×10~8m^3. This paper focuses on Quaternary natural gas exploration history, current biological gas resources volume, biological gas exploration potential analysis and biological gas exploration target, stressing that rich resource conditions, enormous exploration area and low exploration degree hold the key to success of Quaternary biological gas exploration. Based on the scale and understanding of the discovered gas fields, it is predicted that two or three 1000×10~8m^3 gas fields may be found on the southern and northem slopes of the main gas source depression. This area has become one of the important gas sources for West-to-East gas transportation project.