孔眼

There are twin holes on each side of the instrument.

这工具两边各有一对孔眼。

The minimum underbalance is independent of viscosity and compressibility and of reservoir fluids.It is a function of the formation porosity, permeability and radius of perforation channels.

最小测试压差不是依赖于地层流体粘度和压缩性，而是为地层孔隙度、渗透率和射孔孔眼函。

While conducting hydraulic fracturing, the flow rate is required to be controlled to enable the hall-off to block off and uncord the eyelet based on the stimulation process.

封层压裂时，为了使暂按照施工泵注程序对射孔孔眼进行封和解封，需要对压裂施工泵注排量提出要求。