A method includes selecting a model for a simulation of hydrocarbon recovery from a reservoir having a plurality of fractures during injection of an injected gas into the plurality of fractures. Selecting the model includes determining a flux ratio of a convection rate to a diffusion rate for the reservoir, determining whether the flux ratio is less than a threshold, and in response to the flux ratio being less than the threshold, selecting the model that includes diffusion. Selecting the model includes performing the simulation of the hydrocarbon recovery from the reservoir based on the model.

A flow control assembly including a subassembly including an annular safety valve, a shroud, a bushing connecting the shroud to the subassembly at one of two opposing ends of the shroud, and another bushing connecting the shroud to the subassembly at the other of the two opposing ends of the shroud. The method for operating a hydrogen storage and production system including pumping hydrogen into the salt cavern for storage through a borehole and producing hydrogen from the salt cavern through the same borehole.

Systems, methods, and computer program products can be used for determining the amount of oil removed by a miscible gas flood. One of the methods includes identifying locations of oil within a volume representing a reservoir rock sample. The method includes identifying locations of gas within the volume. The method also includes determining the amount of oil removed based on locations within the volume where oil is either coincident with the gas or is connected to the gas by a continuous oil path.

Disclosed are compositions and methods for the pressure protection of existing wells during infill drilling operations.

This disclosure relates to membrane-based systems for transporting dissolved gases to a formation and methods for increasing a mass transfer rate of gases in a formation. The membrane-based system may include an aqueous injection well, a diffusion-based membrane, a gas, and an aqueous solution.

A method for pumping a liquid-gas mixture into a subsurface well includes introducing gas into a liquid at a first pressure to generate a mixture. The mixture is pumped through a first positive displacement pump to a second pressure greater than the first pressure. The mixture at the second pressure is pumped through at least a second positive displacement pump to a third pressure greater than the second pressure. The mixture is moved into the subsurface well at at least the third pressure.

A method of producing hydrocarbons from a subterranean reservoir using laterally displaced and substantially vertically coplanar injection and production wells, in which at least one annulus-flow restrictor is positioned within the injection well diagonally opposed to a production inlet on the production well, so that injecting mobilizing fluid into the subterranean reservoir and producing mobilized hydrocarbons from the subterranean reservoir creates a transverse pressure gradient between the injection well and the production well.

A downhole tool assembly for completing or cleaning a wellbore. The downhole tool assembly may include a perforation gun sub and a laser assembly sub. The perforation gun sub may be used to propagate a shockwave through one or more pre-existing perforations in a formation. The laser assembly sub may be used for treating perforations, e.g. treating the one or more pre-existing perforations. Depending on the parameters of the operation, the treating of the perforations may comprise changing the shape of the perforations and/or making the perforations wider, deeper, or otherwise adjusted.

An injection valve for introducing fluids into a subsurface environment includes a valve housing including a conduit having an inlet and an outlet. A valve seat is arranged in the valve housing. An anti-rotation dart is arranged in the valve housing adjacent the valve seat. The anti-rotation dart includes a valve element that is selectively engageable with the valve seat. An anti-rotation feature is provided on at least one of the valve seat and the anti-rotation dart. The anti-rotation feature constrains rotation of the anti-rotation dart relative to the valve seat.

Disclosed is a method for performing integral plugging control on water invasion and steam channeling of an edge-bottom water heavy oil reservoir. The method for performing integral plugging control on water invasion and steam channeling of an edge-bottom water heavy oil reservoir comprises the following steps: (1) selecting an oil reservoir; (2) arranging a huff-puff well; (3) performing steam huff-puff development; and (4) performing integral plugging control. An integral plugging control technology is used for the method, a high-strength nitrogen foam system is injected by means of well rows at different positions in the oil reservoir, and effective plugging walls are formed at different positions from the edge-bottom water to reduce water invasion and steam channeling.