Bp Chemicals Limited

Bp Exploration Operating Company Limited

Stephen Paul Goodwin

Nevin John Stewart

Ian Ralph Collins

Andrew Richard Lucy

Richard George Chapman

Nicholas John Hazel

James Charles Morgan

A process for the removal of water from gas which comprises an absorption step of bringing a gas saturated with water vapor into gas-liquid contact with a water-lean absorbing liquid comprising a water absorbing liquid having a cloud point temperature above the freezing point of water whereby water vapor present in the gas is absorbed into the water-lean absorbing liquid at a temperature below its cloud point to produce a refined gas having a reduced water vapor content and water-loaded absorbing liquid. A regeneration step is provided in which the water-loaded absorbing liquid is heated to above the cloud point temperature of the absorbing liquid whereby the water-loaded absorbing liquid separates into a water-rich phase and an absorbing liquid-rich phase and the absorbing liquid-rich phase is cooled to a temperature below its cloud point prior to recycling the absorbing liquid-rich phase for use as water-lean absorbing liquid in the absorption step.

Process for dehydrating gas

A method of recovering or increasing the recovery of oil and/or gas from an underground formation involving injecting into the formation, preferably in the form of an aqueous solution, at least one mono alkyl ether of polyethylene glycol in which the alkyl group has 3-5 carbons and the polyethylene glycol contains 3-6 ethylene oxy units e.g. butyl ether of triethylene glycol. Especially preferred are mixtures comprising that and at least one mono alkyl ether of mono or di ethylene glycol e.g. a mixture of butyl triglycol ether, butyl tetraglycol ether, butyl pentaglycol ether and butyl diglycol ether. The method of the invention may be applied to well stimulation treatments such as water blocking, sand consolidation, sandstone acidizing and methods of increasing the recovery of oil such as tertiary oil recovery.

Use of oil and gas field chemicals

2-methylbutoxy ethoxyethanol

Ether cosolvents for resin formulations

This invention relates to a process for increasing the effectiveness of production chemicals by reducing the number of squeezing and shut-in operations needed to increase the production rate from an oil well. The process includes injecting into an oil-bearing rock formation a water-miscible formulation including as components: (a) a water-miscible surfactant which is an alkyltriglycol ether and (b) at least one water-miscible oil field or gas field production chemical, said components of the formulation being introduced either as a pre-formed single composition, or simultaneously in parallel or sequentially in either order into the rock formation via the production well.

Oil and gas field chemicals

Growing community of inventors

London, United Kingdom

Stephen Paul Goodwin