卧67井是一口在钻井过程中发生井喷、压井失败后采取应急措施投产的天然气井。投产后的井口是钻井时的那套装置,其耐压等级低(小于80公斤/厘米~2),且有密封胶件老化之虞。 1983年11月,底法兰钢圈槽出现刺漏现象,日放空气量近万米~3,给井口安全造成严重威胁。 Horizontal well 67 is a well that blows during the drilling process and takes emergency measures to put it into operation after it fails. After putting into operation, the wellhead is a set of devices for drilling, which has a low pressure rating (less than 80 kg / cm ~ 2) and the risk of sealant aging. In November 1983, there was a puncture phenomenon at the bottom flange of the steel ring groove. The daily air volume was nearly 10,000m ~ 3, posing a serious threat to the wellhead safety.