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Variability in Quantity and Salinity of Produced water from an Oil Production in South Kuwait

Engineering（科研） 2024年第1期16卷 8-23页

作者： Feras Al Salem Thies Thiemann Department of Biology College of Science United Arab Emirates University Al Ain United Arab Emirates Department of Chemistry College of Science United Arab Emirates University Al Ain United Arab Emirates

Produced water (PW) is the largest waste stream in the oil and gas industry. water remains trapped for millions of years in the reservoir with oil and gas. When a hydrocarbon reservoir is infiltrated by a production well, the produced fluids commonly contain water. The understanding of this water’s constituents and volumes is vital for the sustainable continuity of production operations, as PW has a number of negative impacts on the infrastructure integrity of the operation. On the other hand, PW can be an alternative source of irrigation water as well as of industrial salt. Interestingly, both the quantity as well as the quality of PW do not remain constant but can vary, both progressively and erratically, even over short periods of time. This paper discusses such a situation of variable PW in an oil and gas operation in the State of Kuwait.

关键词： Produced water Oil Wells water-cut Salinity Fluctuation Total Dissolved Solids

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Study of the Law about water-cut Variation for the Fractured Metamorphic Reservoir of Buried Hill with Bottom water

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Energy and Power Engineering 2009年第1期1卷 44-49页

作者： Shenggao QIN Yanling SUN Zhenqi JIA Dagang YANG 不详

Aiming at the complex flowing environment including the buried hill of Metamorphite, the active bottom water and the fracture at Budate Reservoir within Beir Depression of the Hailar Basin, combining the laboratory studies and based on analysis of its drive mechanism, field wells’ parameters were used to analyze the effects of different conditions of the fractured metamorphic reservoir with bottom water on its law of wa-ter-cut variation and the waterflooding efficiency. The results show that for the Budate buried hill reservoir with bottom water, the gravity should be taken into consideration to determine reasonable perforation ratio and production pressure difference. And because of the acid sensitivity of the buried hill reservoir, application of proper clay stabilizer will enhance the field oil recovery to a satisfactory extent.

关键词： metamorphic reservoir bottom water buried hill reservoir water-cut

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Experimental study on surface-active polymer flooding for enhanced oil recovery: A case study of Daqing placanticline oilfield, NE China

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Petroleum Exploration and Development 2019年第6期46卷 1206-1217页

作者： YU Qiannan LIU Yikun LIANG Shuang TAN Shuai SUN Zhi YU Yang College of Mechanical and Electrical Engineering Guangdong University of Petrochemical TechnologyMaoming 525000China School of Petroleum Engineering Northeast Petroleum UniversityDaqing 163318China School of Chemical Engineering Sichuan UniversityChengdu 610065China PetroChina Daqing Oil Field Co.Ltd. Daqing 163002China

Experiments on surface-active polymer flooding for enhanced oil recovery were carried out by detection analysis and modern physical simulation technique based on reservoirs and fluids in Daqing placanticline oilfield.The experimental results show that the surface-active polymer is different from other common polymers and polymer-surfactant systems in molecular aggregation,viscosity and flow capacity,and it has larger molecular coil size,higher viscosity and viscosifying capacity,and poorer mobility.The surface-active polymer solution has good performance of viscosity-increasing and viscosity retention,and has good performance of viscoelasticity and deformability to exert positive effects of viscosifying and viscoelastic properties.Surface-active polymer can change the chemical property of interface and reduce interfacial tension,making the reservoir rock turn water-wet,also it can emulsify the oil into relatively stable oil-in-water emulsion,and emulsification capacity is an important property to enhance oil washing efficiency under non-ultralow interfacial tension.The surface-active polymer flooding enlarges swept volume in two ways:Microscopically,the surface-active polymer has mobility control effect and can enter oil-bearing pores not swept by water to drive residual oil,and its mobility control effect has more contribution than oil washing capacity in enhancing oil recovery.Macroscopically,it has plugging capacity,and can emulsify and plug the dominant channels in layers with high permeability,forcing the injected fluid to enter the layer with medium or low permeability and low flow resistance,and thus enlarging swept volume.

关键词： high water-cut oilfield reservoir surface-active polymer oil-washing efficiency swept volume plug by emulsification enhanced oil recovery

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