电缆直读试采井口石蜡高压固封技术

Fixed Sealing Tech by Paraffin for Well Head of Wire-Line Read Out Testing and Oil Recovery.

在油田开发过程中,有些油井需要长期测试地层压力,特别是试采资料井。在用直读式电子压力计监测地层压力时,信号电缆线在井口的密封不良,一直是个难以解决的技术问题。石蜡高压固封井口电缆的技术方法首先在两端将测压电缆的外端由压缩密封胶件初步密封,然后在本体腔内注入溶化了的液态石蜡,并施以高压,使液态石蜡渗透到电缆铠皮钢丝及芯线绝缘外皮的缝隙之间,待高压液态的石蜡凝固后,便可以良好的密封井口测压电缆。详细阐述了该技术实施的方法、过程及其效果。

During developing period of the oilfield,some wells need a long term to test,especially for wells of acquiring data of oil testing and recovery.When monitoring formation pressure by read-out electronic gauge,it is a technical problem to settle that the sealing condition of signal line at well head is not good.Firstly,fixed sealing tech by paraffin for well head of wire line is using compressed sealing colloid out of wire-line for testing voltage to seal primarily at the two ends.And then,melt liquid wax is inject in inner body and high pressure is made to make the liquid wax penetrating clearance between outer steel line of wire line and outer insulated skin of the core line that seals the wire-line at well head for acquiring pressure properly when high pressure liquid wax is solidified.The method and process of it is illustrated which has a valuable effect.