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June 8,, don't pressure well change Christmas tree in qinghai oilfield company homework SeBei a gas field, acerbity 4, 5 well succeed. This is the first time SeBei gas field application not pressure well completion work way easier replaced Christmas tree.
According to introducing, this kind of work is the advantage of way, can avoid pressure well liquid to the formation cause pollution damage, well short of time, field work can be finished well open production. Don't pressure change the Christmas tree and well control valve of the core is the safe operation of controlled, tools reliable performance, construction results effective. The method is applied DiuShou take pressure change not the device and pressure change with the technology will be delivered to the special jams, the reservation, to block bottom position within the airflow, to not pressure well the Christmas tree and control the outfit the purpose of the valve.
Qinghai oilfield will actively carry out not pressure well completion work with technology and LaoSha pressure and the process technology research, experiment technology to avoid pollution and increase the formation gas recovery, keep gas field development, which laid the foundation for high efficiency.