Abstract: A system for carbon dioxide (CO2) capture at a wellhead using a mixed matrix membranes (MMM). The MMM includes a polymer matrix and covalent triazine framework (CTF) fillers. The captured CO2 stream may be reutilized through sequestration and utilization approaches. The bulk stream may be split into multiple streams for various applications. Some CO2 may be converted chemically into fuels, reaction intermediates, and productivity enhancement tools such as methanol, syngas, CO2-foam, used in fracking fluids, and stimulant acids. The rest may be stored through direct injection into porous formations or reactive rocks such as basalt.

Abstract: A wireline recovery tool for retrieving a wireline from a wellbore includes an outer sheath and a rotatable spear positioned within the outer sheath. The rotatable spear includes a plurality of angled portions and a plurality of vertical portions such that the rotatable spear has an asymmetrical profile. The outer sheath includes a first and second wall, each of which includes an inner surface and an outer surface. A plurality of angled prongs extend from the inner surfaces of the first and second walls. A torque device including an indexing mechanism and ratcheting mechanism rotates the rotational spear positioned within the outer sheath. As the rotatable spears rotates, the wireline being retrieved from the wellbore becomes increasingly entangled with the rotatable spear and outer sheath, such that the wireline can be removed from the wellbore.