Spinning gas separator for drilling fluid

摘要

A gas-separator for separating trapped gases from drilling fluids retrieved from a well-bore being drilled is disclosed. The gas-separator includes a cylindrical separator which is capable of rotating on its longitudinal axis when fluid and gases flow out through fluid ejection ports, which access the center bore of the cylindrical separator. The fluid ejection ports have a narrower cross-section towards the center bore and a wider cross-section at the opposite end, and are preferably aligned substantially tangentially with periphery of center bore, such that outflow of drilling fluid (and gases) from the center bore through the ejection ports induces a rotational torque on the cylindrical separator. Spinning of cylindrical separator enhances the gas-separation effect.

主权项

1. A cylindrical gas-separator for removing gases from drilling fluid, comprising:
transverse fluid ejection ports accessing the longitudinal bore of the cylindrical separator, wherein said fluid ejection ports are narrower towards the hollow bore and widen towards the exit outside the cylindrical separator, and wherein said fluid ejection ports are aligned such that outflow of drilling fluid and gases from said hollow bore through the fluid ejection ports is substantially tangential with periphery of the cylindrical separator and induces a rotational torque transverse to the cylindrical separator, which is the only force causing the cylindrical separator to rotate on its axis, whereby the rotation forces more drilling fluid and gases in the drilling fluid to outflow through the fluid ejection ports.