Abstract: The claimed invention relates to an heated clothing with autonomous heating source and comprise (a) thermally insulated suit adapted to cover the human body, (b) portable, low-temperature heat generation module with combustion process controlled by a control unit, c) infrared window for energy delivery, (d) heat energy distribution system to supply heat to different parts of the body, (e) temperature control system, including the temperature sensors, responsible for maintaining proper temperatures at different parts of the body and f) moisture adsorbing pads to remove excessive moisture originating from sweating. A light and flexible suit provides controllable stream of heat from a heater to a wearer for prolonged time. The suit includes attachable, heated gloves and boots and gives complete protection against even extreme cold.

Abstract: The claimed invention relates to an heated clothing with autonomous heating source and comprise (a) thermally insulated suit adapted to cover the human body, (b) portable, low-temperature heat generation module with combustion process controlled by a control unit, c) infrared window for energy delivery, (d) heat energy distribution system to supply heat to different parts of the body, (e) temperature control system, including the temperature sensors, responsible for maintaining proper temperatures at different parts of the body and f) moisture adsorbing pads to remove excessive moisture originating from sweating. A light and flexible suit provides controllable stream of heat from a heater to a wearer for prolonged time. The suit includes attachable, heated gloves and boots and gives complete protection against even extreme cold.

Abstract: A method of oil/gas well stimulation. Firstly, positioning a venturi-style pumping apparatus (12) in a wellbore (14) within a selected production zone (16) of an oil/gas producing formation (18). The pumping apparatus (12) is connected to a first conduit (21) and a second conduit (25). Secondly, activating the pumping apparatus (12) to induce a flushing of fluids and contaminants from the oil/gas producing formation (18) into the wellbore (14). Thirdly, pumping power fluid that powers the pumping apparatus (12) via the first conduit (21) and directing a portion of the power fluid through at least one fluidizing nozzle (15) to sufficiently fluidize contaminants to enable the contaminants to be removed from the wellbore (14) along with pumped fluids by the pumping apparatus (12) via the second conduit (25).

Abstract: A centralizer for downhole sucker rods such as those used in oil wells. The centralizer has a central axial aperture for rotatable mounting on a downhole rod of a rod string. The exterior surface of the centralizer is shaped to engage the well wall when brought into contact with the wall such that rotational movement of the centralizer is limited or stopped with respect to the wall. Generally, the exterior of the centralizer is shaped to match the shape of the wall of the well in which it is to be used. A centralizer for use with a well lined with a circular tubing thus has at least one exterior surface which in cross section defines an arc having a radius of curvature equal to that of the tubing interior. A disclosed embodiment has six lobes having surfaces defining in cross section portions of three such arcs arranged symmetrically about the central aperture.

Abstract: The device employs the jet pump principle to bring a power fluid to sedimented solids and the like plugging a conduit, and it includes at least one nozzle which directs the power fluid in a high-velocity jet against the solids to bring the solids into suspension for subsequent removal thereof using the jet pump principle.