Abstract: A differential pressure fluid flow meter measures flow of a fluid based upon a differential pressure. An orifice plate is selected from a plurality of orifice plates configured to be positioned between upstream and the downstream taps in the conduit. Four evenly spaced circular orifices allow the flow of fluid there through and create the differential pressure which is a function of fluid flow rate. Xdc is a distance in a direction perpendicular to an axis of the conduit from the nearest outer circumference of the circular orifices to a projection of a center of the downstream tap on the flat orifice plate. Xed is a distance between outer circumferences of two opposed circular orifices. Rb is a ratio of the diameter that locates the centers of the four circular orifices and the interior diameter of the conduit. Xdc and Xed are each a function of Rb.

Abstract: There is provided for laser bottom hole assembly for providing a high power laser beam having greater than 5 kW of power for a laser mechanical drilling process to advance a borehole. This assembly utilizes a reverse Moineau motor type power section and provides a self-regulating system that addresses fluid flows relating to motive force, cooling and removal of cuttings.

Abstract: This invention relates to a manually-operated mechanism for inserting and removing flow measurement probes and the like from a pipeline carrying a flowing fluid, such mechanism being characterized by a hanger subassembly including a yoke mounted atop the probe for movement therewith externally of the pipe along with a pair of threaded rods suspended non-rotatably from the yoke and which parallel one another as well as the longitudinal axis of the probe but on opposite sides thereof, a drive subassembly supported in fixed position beneath the yoke and including a common drive shaft along with a pair of worm gear trains each containing a worm gear threaded onto one of the threaded rods, such drive subassembly operatively interconnecting the shaft and the two threaded rods for simultaneously and synchronously raising or lowering the latter, and a handcrank for turning the drive shaft.