达坂城次凹圈闭地质风险评价

APPRAISAL OF GEOLOGICAL RISK OF TRAPS IN DABANCHENG SUB-SAG

应用PDsys3.5圈闭评价软件,根据圈闭评价技术规范及地质风险评价标准,选取合理的评价参数,对2006年达坂城次凹主要勘探目的层发现和落实的9个可靠、较可靠层圈闭进行了地质风险评价。评价结果:Ⅰ类层圈闭1个、Ⅱ类层圈闭7个、Ⅲ类层圈闭1个。其中,柴窝堡地层-构造圈闭,阿克苏断背斜、阿克苏断鼻地质把握系数较大,表明这三个圈闭具有较小的勘探风险,应为下一步勘探的首选目标。

Applying PDsys3.5 trap apraisal software,according to the traps appraisal technology standard and the geology risk made assessment assessment standard,selecting the reasonable appraisal parameter,we made apraisal of main exploration goal of Dabancheng sub-sag layers discovery and of nine reliable or comparative reliable traps in 2006.Here are the appraisal results:one trap of level one,seven traps of level two,one trap of level three.Among them,the Chai Wobao stratum deformational trap,Aqsu breaksthe anticlipe,Aqsu breaks the nose geology have more chance,and it is indicated that these three traps have les exploration risk,which should be the first choice for the next exploration.