Abstract:
The present invention relates to the separation of liquid two-phase dispersions into phases and may be used in the chemical, food, and microbiological industries. An emulsion is first transformed into an aerosol with a gas as the dispersion medium and particles of the dispersion medium and dispersed phase of the initial emulsion as the dispersed phase. The resulting aerosol is then subjected to centrifugal forces, and the emulsion constituent phases are drained separately. The method may be used to break the first type emulsions or the second type emulsions. Emulsion may be aerosolized by hydraulic, or pneumatic, or ultrasonic atomizing in a gas medium. Air, or an inert gas, or nitrogen, may be used as the gas medium. The invention improves emulsion phase separation efficiency while reducing associated energy consumption.
Abstract:
Embodiments of the present invention relate to an underwater gas/liquid-liquid modular separation system which enables the disposal of produced water in undersea environment. The underwater gas/liquid-liquid modular system separation consists of a gravitational separator and a water polishing system consisting of deoiling membranes capable of withdrawing the residual oil contained in water. Furthermore, the underwater gas/liquid-liquid modular separation system also features a demulsifier injection which promotes the breakdown of the water-oil emulsion. Embodiments further relate to an underwater gas/liquid-liquid separation method and to the use of deoiling membranes in gas/liquid-underwater liquid separation systems.
Abstract:
The present invention generally relates to methods for resolving water and oil emulsions in the produced fluid of an oil production system comprising adding a structured copolymer reverse emulsion breaker to the produced fluid of the crude oil production system in an amount effective for resolving an oil-in-water emulsion. In particular, these methods for resolving an oil-in-water emulsion can be used in separation processes where the oil and solids in the produced fluid are separated from the produced water in the produced fluid.
Abstract:
The present invention is related to a method and system for subsea purification of produced water in a subsea installation comprising a tank assembly (10) for separating gas, oil, sand and other minerals and water by means of gravitational forces and retention time, as well as releasing purified water and storing of sand and other mineral particles for a long period, including many years.
Abstract:
The present invention generally relates to methods for resolving water and oil emulsions in the produced fluid of an oil production system comprising adding a reverse emulsion breaker to the produced fluid of the crude oil production system in an amount effective for resolving an oil-in-water emulsion. In particular, these methods for resolving an oil-in-water emulsion can be used in separation processes where the oil and solids in the produced fluid are separated from the produced water in the produced fluid.
Abstract:
Methods including the step of producing a bulk fluid from a subterranean formation, the bulk fluid comprising at least water and a hydrocarbon. The bulk fluid is then sampled to form at least one sampled fluid. Next, constituent parameters of the sampled fluid are determined using the hydrophilic-lipophilic deviation (HLD) model. The constituent parameters include the salinity (S) of the sampled fluid, the salinity constant (b); the equivalent alkane carbon number for the hydrocarbon in the sampled fluid ( EACN ); T is temperature of the sampled fluid; the characteristic curvature for an ionic surfactant composition ( c c ) or for a nonionic surfactant composition ( c cn ); the surfactant temperature constant for the ionic surfactant composition ( α T ) or for a nonionic surfactant composition ( cT ). Also determining an optimal surfactant or optimal surfactant blend to achieve an oil-water separation morphological phase distribution of the sampled fluid.
Abstract:
Electrocoagulation may be used to reduce the concentration of hydrate inhibitors in produced water. For example, a method may include producing a fluid from a subterranean formation, the fluid comprising petroleum hydrocarbons and water, the water having an organic material that includes hydrate inhibitors dispersed therein, wherein the hydrate inhibitors are at a concentration of about 30 ppm or greater in the water; separating the petroleum hydrocarbons from the water and the organic material; and separating at least some of the organic material from the water via electrocoagulation to yield an effluent water and a coagulated organic material.
Abstract:
Die vorliegende Erfindung betrifft ein Verfahren zur Aggregation und Abtrennung eines organischen Stoffgemisches, das in einer wässrigen Emulsion gelöst vorliegt, gekennzeichnet durch die Schritte: a) Bereitstellung einer wässrigen Emulsion mit darin gelöst vorliegenden organischen Verbindungen, wobei es sich bei den organischen Verbindungen um Carbonsäuren, Phospholipide, Glycolipide, Glyceroglycolipide, Phenole, Sterole, Chlorophylle und/oder Sinapine handelt, b) Mischen der Emulsion aus Stufe a) mit einer wässrigen Lösung enthaltend Kupfer(II)ionen und/oder Calciumionen bis zum Erreichen einer Aggregatbildung, c) Abtrennen der Aggregate aus Stufe b) durch Sedimentation, Filtration oder Zentrifugation nach Erlangen einer aggregierten Phase der organischen Verbindungen aus Stufe b).
Abstract:
The present invention provides a demulsifier comprising a compound of the general formula (I), a demulsification formulation comprising the demulsifier, methods of making a demulsifier, a method of demulsifying an oil-in-water or a water-in oil emulsion and the use as a demulsifier of a compound comprising a dimer and/or trimer fatty residue and an alkyleneoxy chain comprising a first ethyleneoxy section, a second ethyleneoxy section, and a propyleneoxy section located between the first ethyleneoxy section and the second ethyleneoxy section, wherein the propyleneoxy section comprises from 1 to 20 propyleneoxy groups. The demulsifier may be for use in demulsifying an emulsion, for example crude oil.
Abstract:
A demulsification process for extracting surface active biochemical products from crude oil and its fractions when they are used as feedstock during biochemical productions utilizes subcritical/supercritical C0 2 as a proton pump. The process also includes a pH tuning step, thereby inducing demulsification and precipitation of biochemical products into the aqueous phase, but avoiding asphaltene precipitation by apriori addition of resinous solvents derived from crude oil or bioresources. The biochemical products are then extracted from the aqueous phase via temperature change or some other technique.