Method and device for separation of particles from injection water
AssigneeWell Processing AS
InventorDavid Pinchin
Life of this patent
Estimating the term…
Abstract
A method and device for separating particles from injection water, the injection water being used for the stimulation of a petroleum reservoir. The water is drawn from a water reservoir, cleaned and typically treated by means of additives before being led into the petroleum reservoir. The injection water is first led into a closed space (14), in which the flow rate is sufficiently low for undesired particles to precipitate from the injection water.
Claims12
A method for removing, without filtering, undesired particles from untreated water, to be used for injection and stimulation of a petroleum reservoir, the method comprising the steps of:
- drawing the untreated water from a water reservoir;
- leading the untreated water directly into a lower portion of a closed space;
- leading the water from the lower portion to an upper portion of the closed space whilst flowing at a flow velocity sufficiently low for allowing undesired particles in the water to precipitate by means of gravitation;
- and
- leading cleaned water out of the upper portion of the closed space and into the petroleum reservoir.
A device for removing, without filtering, undesired particles from untreated water, to be used for injection and stimulation of a petroleum reservoir, wherein the untreated water is drawn from a water reservoir and is led into the device for removal of said particles, after which cleaned water is led into the petroleum reservoir, said device comprising:
- a closed space having
- a lower portion into which the untreated water is led directly;
- an upper portion from which the cleaned water is discharged;
- and
- a cross-sectional area arranged in a manner allowing the water to flow from the lower portion to the upper portion whilst having a flow velocity sufficiently low for allowing undesired particles in the water to participate by means of gravitation.
Dependencies are inferred from the claim text.