Abstract

A water-based wellbore fluid may include an aqueous base fluid and a modified graphene shale inhibitor that comprises one or more substituents that are covalently bonded to graphene via a linking group. One of the one or more substituents may be a hydrocarbon group that has a number of carbon atoms in the range from 8 to 14.

IPC Classes  ?

• C09K 8/22 - Synthetic organic compounds

Abstract

A feed liquid flows into a second-stage humidifier chamber to form a second-stage humidifier bath. A first remnant of the feed liquid from the second-stage humidifier chamber then flows into a first-stage humidifier chamber to form a first-stage humidifier bath having a temperature lower than that of the second-stage bath. A second remnant of the feed liquid is then removed from the first-stage humidifier. Meanwhile, a carrier gas is injected into and bubbled through the first-stage humidifier bath, collecting a vaporizable component in vapor form from the first remnant of the feed liquid to partially humidify the carrier gas. The partially humidified carrier gas is then bubbled through the second-stage humidifier bath, where the carrier gas collects more of the vaporized component from the feed liquid to further humidify the carrier gas before removal from the second-stage humidifier chamber.

IPC Classes  ?

• B01D 1/14 - Evaporating with heated gases or vapours in contact with the liquid
• B01D 19/00 - Degasification of liquids
• C02F 1/04 - Treatment of water, waste water, or sewage by heating by distillation or evaporation

Abstract

A carrier-gas mixture is directed through a fluid flow path (16, 18) in a combined heat and mass transfer device (12, 14), which can be operated at sub-atmospheric pressure. Heat and mass are transferred from/ to the carrier-gas mixture via interaction with a liquid composition including a vaporizable component in a liquid state to substantially change the content of the vaporizable component in the carrier-gas mixture via evaporation or condensation. The mass flow rate of the carrier-gas mixture is varied by extracting/injecting (60, 62, 64) the carrier-gas mixture from at least one intermediate location in the fluid flow path, and/or the mass flow rate of the liquid composition is varied by extracting/injecting the liquid composition from at least one intermediate location in the fluid flow path. The flow of the carrier-gas mixture or the liquid composition is regulated to reduce the average local enthalpy pinch.

IPC Classes  ?

• B01D 1/00 - Evaporating
• B01D 1/14 - Evaporating with heated gases or vapours in contact with the liquid
• B01D 5/00 - Condensation of vapours; Recovering volatile solvents by condensation
• C02F 1/04 - Treatment of water, waste water, or sewage by heating by distillation or evaporation
• C02F 1/10 - Treatment of water, waste water, or sewage by heating by distillation or evaporation by direct contact with a particulate solid or with a fluid, as a heat transfer medium
• C02F 1/12 - Spray evaporation
• C02F 1/14 - Treatment of water, waste water, or sewage by heating by distillation or evaporation using solar energy

Abstract

High performance computing (HPC') and grid computing processing for seismic and reservoir simulation are performed without impacting or losing processing time in case of failures. A Data Distribution Service (DDS) standard is implemented in High Performance Computing (HPC) and grid computing platforms, to avoid the shortcomings of current Message Passing Interface (???) communication between computing modules, and provide quality of service (QoS) for such applications. QoS properties of the processing can be controlled.

IPC Classes  ?

• G06F 15/16 - Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs
• G06F 9/50 - Allocation of resources, e.g. of the central processing unit [CPU]
• G01V 1/28 - Processing seismic data, e.g. analysis, for interpretation, for correction
• G01V 9/00 - Prospecting or detecting by methods not provided for in groups

Abstract

In a bubble-column vapor mixture condenser, a fluid source supplies a carrier-gas stream including a condensable fluid in vapor phase. The condensable fluid in liquid form is contained as a bath in a chamber in each stage of the condenser, and the carrier gas is bubbled through the bath to condense the fluid into the bath. Energy from condensation is recovered to a coolant in a conduit that passes through the liquid in the stages of the condenser. The bubble-column vapor mixture condenser can be used, e.g., in a humidification-dehumidification system for purifying a liquid, such as water.

IPC Classes  ?

• B01D 5/00 - Condensation of vapours; Recovering volatile solvents by condensation