Water treatment method for oily sewage of compound flooding crude oil production fluid used in offshore oilfields
A technology for offshore oil fields and produced fluids, which is applied in the fields of light water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. Sewage treatment equipment and methods, etc., to achieve the effect of compact design, reliable treatment, and oil content reduction
Active Publication Date: 2017-03-22
RES INST OF PETROLEUM EXPLORATION & DEV SHENGLI OILFIELD CO LTD SINOPEC +1
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Problems solved by technology
So far, no special equipment and methods have been developed to meet the needs of offshore oilfield production wastewater treatment, and there is no treatment equipment and method that can be well applied to "binary compound flooding" oily wastewater
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[0025] Such as figure 1 As shown, the water treatment equipment of the composite flooding crude oil production fluid according to a preferred embodiment of the present invention is generally indicated by a label 100, which mainly includes: a raw material composed of a raw material tank 1 and a raw material pump 2 (that is, the crude oil production fluid contains oil). Sewage, wherein contains the binary composite oil displacement agent that is made up of polymer and tensio-active agent) supply device; The demulsifier supply device that is made up of demulsifier tank 3 and demulsifier injection pump 4; The air flotation medicament supply device that injection pump 6 forms; Be connected to the mixer 7 of raw material supply device and demulsifier supply device, it accepts and mixes raw material and demulsifier; The raw material of device 7 and the mixed solution of demulsifier, and mixed solution is carried out microwave treatment; The heat settling tank 9 that is connected to m...
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Abstract
The invention provides water treating equipment and method for a compound flooding crude oil produced fluid for an offshore oilfield. Oil-containing sewage of a crude oil produced fluid contains a binary compound oil displacement agent which consists of polymer and a surfactant. The water treating equipment comprises a raw material supplying device, a microwave treating device and a thermal precipitation tank, wherein the microwave treating device receives the oil-containing sewage of the crude oil produced fluid and carries out microwave treatment on the oil-containing sewage of the crude oil produced fluid; the thermal precipitation tank is connected to the microwave treating device, receives crude oil produced wastewater after the microwave treatment and enables the crude oil produced wastewater to carry out thermal precipitation in the thermal precipitation tank to separate out oil. The water treating equipment also at best comprises a demulsifier supplying device, a gas flotation reagent supplying device, a gas flotation tower and a gas supplying device. With the adoption of the water treating equipment, by virtue of the equipment, the treatments of microwave intensifying, a chemical agent and / or a bubble method to the oil-containing sewage of the crude oil produced fluid of the offshore oilfield can be realized. The water treating equipment and method can be realized by virtue of a relatively compact design scheme and can be used for effectively and reliably treating the binary compound flooding oil-containing sewage within a short time.
Description
technical field [0001] The present invention relates to crude oil extraction, in particular, to a water treatment device and method for a composite flooding crude oil production fluid used in offshore oilfields, and more specifically, to a binary heavy crude oil production fluid enhanced by microwaves containing oil Wastewater treatment device and method. Background technique [0002] With the development of science and technology, the exploitation of seabed crude oil has become an important means to meet the demand for crude oil and ensure the sustainable development of the national economy. Due to limited conditions, offshore platforms require rapid, high-efficiency, energy-saving and equipment volume should not be too large for the treatment of crude oil production fluid. Crude oil production water is the oily sewage to be treated after most of the oil in the crude oil production fluid is separated. It is necessary to further separate the oil in it, and then inject the w...
Claims
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IPC IPC(8): C02F9/08C02F1/30C02F1/40
Inventor 李振泉徐心茹宋新旺杨敬一张继超郭兰磊祝仰文王红艳马宝东李彬
Owner RES INST OF PETROLEUM EXPLORATION & DEV SHENGLI OILFIELD CO LTD SINOPEC