Abstract: The present invention relates to a preheating device for welding oil, gas, and geothermal wellheads of varying diameters and thicknesses which is applicable to the oil, gas, and geothermal industry. The preheating of head and coating pipes to be welded do not cool down quickly. The cooling speed reduction prevents structures or joints from being less susceptible to cracking by maintaining the necessary heat thus preventing the integrity of the joints from being exposed. The preheating of head and coating to be welded maintains a uniform and constant temperature avoiding temperature changes, thus making the structures or joints less susceptible to cracking by maintaining the necessary heat and preventing the integrity of the joints from being exposed.

Abstract: The present invention relates to a new inflatable and flexible modular habitat for welding in wells and/or high fire risk rated facilities, offshore and onshore to trap slag, sparks and the like, by a structure and/or module-based assembly. The structure can be resized and assembled on site to allow it to adapt to different applications of hot work without having to stop the production.

Abstract: The present invention relates to a new inflatable and flexible modular habitat for welding in wells and/or high fire risk rated facilities, offshore and onshore to trap slag, sparks and the like, by a structure and/or module-based assembly. The structure can be resized and assembled on site to allow it to adapt to different applications of hot work without having to stop the production.