Abstract: A disclosed example embodiment includes a system of testing slickline cable integrity. The system includes a composite slickline cable including a fiber reinforced polymer having at least one optical fiber disposed therein. At least a portion of the optical fiber is placed in axial stress. An optical analyzer is optically coupled to the optical fiber. The optical analyzer is operable to send an optical signal into the optical fiber, receive optical feedback from the optical fiber, responsive to the received optical feedback, identify variations in at least one parameter of the optical fiber and determine whether any identified variations exceeds a predetermined threshold, thereby indicating possible loss of composite slickline cable integrity.

Abstract: A rotary vane vacuum pump includes a drive unit, such as an electric motor, and a pump unit, preferably constructed as a cartridge pump unit. The drive unit may take any suitable form, but the cartridge unit includes one or more pumping stages plus a pumping stage of small dimension to lower pressure and increase outgassing of the lubricant. The rotors of the rotary vane pump unit are shaftless, that is they together form an axis of rotation without a separate axial shaft and are thus simplified in construction. All of the requirements of oiling, outgassing and gas ballast are fulfilled in the additional stage.