摘要
目前勘探证实TLG工区天然气具有一定的前景,但勘探成功率仅为20%左右,当务之急是对工区天然气富集区进行重新预测与评价。通过对TLG工区钻后评估和成藏要素分析认为,工区局部构造与天然气成藏关系密切。在分析目标层现今构造特征和构造演化的基础上,指出了寻找古构造与现今构造匹配形成的圈闭是工区天然气勘探获得突破的关键要素之一,综合评价出了两个有利区块、一个较有利区块和一个值得探索区域。
Although current exploration has confirmed that TLG working area is a potential gas-production zone,exploration successful rate is just only 20%.The highest priority of exploration therefore should be given to the re-prediction and evaluation of natural gas enrichment zones.Through post-drilling assessment and analysis of factors controlling gas pool formation,it is concluded that gas accumulation is closely related to local structures.On the basis of analyzing current structure and tectonic evolution,the author suggests that the key to breakthrough of natural gas exploration is to find traps where paleo-structures match current structures.Two most favorable zones,one favorable zone,and one prospective zone were proposed.
出处
《勘探地球物理进展》
2008年第2期89-94,共6页
Progress in Exploration Geophysics
关键词
TLG工区
圈闭
构造
天然气
TLG working area
trap
structure
natural gas
