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Demulsification of Heavy Crude Oilfield Produced Water by External Field

Author: HongZhongLou
Tutor: XuXinRu
School: East China University of Science and Technology
Course: Chemical processes
Keywords: Heavy crude oil Flooding Ultrasonic wave Microwave Synthesis
CLC: TE624.1
Type: Master's thesis
Year: 2012
Downloads: 19
Quote: 0
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Abstract


With the increasing of the heavy crude oil production in recent years as well as the development of the offshore fields , the crude oil produced water compound flooding and more attention. The paper studied the newly developed polymer and surfactant flooding of heavy crude oil composite water stability . Flooding dozens of different types demulsifier heavy crude composite effluent to be assessed , ZY-02 has a significant effect . The experimental results show that : the lower polymer concentration favor crude oil mining water emulsion demulsification , the presence of high concentrations of polymer play a significantly enhanced role will oil recovery water emulsion stability . Surfactant polymer interaction with the system and a surface active agent additives enhance the stability of the crude oil produced water . Strengthen the role of ultrasonic and microwave can reduce the flooding of crude oil produced water processing time and demulsifier dosage . Ultrasonic conditions : ultrasonic frequency of 40 KHz, ultrasonic power of 60W . Microwave conditions : microwave power of 300 W , microwave time of 3 min . Poly (ethylene oxide) with 1,3-propanediol polyoxypropylene block compounds (HA1) for the raw materials by adding MDI Synthesis HR type Deemulsifier synthetic product , the reaction of suitable MDI and the HA1 mass ratio of 5% , the synthesized HR11 and Structural Characterization . HRll HQ-1 cationic demulsifier to 7:3 (v / v) HR2 is complex preparation , the concentration of the polymer and the surface active agent are 800 mg / L, the initial oil content of 2500 mg / L of heavy crude flooding Produced Water the HR2 is dosage of 100 mg / L and temperature 45 ° C , 90 min settlement in the microwave for 3 min deoiling rate reached 90.9% . Microwave - flotation combination of strengthening the flooding produced water demulsification polymer and surfactant concentration are 800 mg / L of oil content in produced water reduced from 2500 mg / L to 45.1 mg / L; polymer and surfactant concentrations were 500 mg / L oil content of the produced water from 800 mg / L down to 10.2 mg / L, respectively.

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CLC: > Industrial Technology > Oil and gas industry > Oil, natural gas processing industry > Petroleum refining > The refining process > Crude oil pretreatment
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