The role of surface and subsurface integration in the development of a high-pressure and low-production gas field

Liu, Yang; Li, Jiexun; Wang, Zhihua; Wang, Shanzhe; Dong, Yingchun

doi:10.1007/s12665-015-4341-7

Cited by 28 publications

(10 citation statements)

References 38 publications

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“…Temperature and pressure is the key parameters which determine the formation of gas hydrates. The free water model which based on phase equilibrium is suit for these situations as follow, the phase of mixture hydrates which formed in pipeline is water-rich phase, gas phase and water-rich phase, hydrocarbon-water rich phase, gas phase with hydrocarbon-water rich phase [8]. Therefore, it is available to use PIPESYS (multiphase flow pipeline simulation software) with free water model for predicting the gas hydrates formation limits of gas gathering pipeline under different conditions.…”

Section: Inhibition Of Gas Hydratesmentioning

confidence: 99%

Inhibition of gas hydrates and corrosion behavior in gas field production facilities

Sun¹,

Xu²,

Zhang³

et al. 2016

Proceedings of the 2016 International Conference on Innovative Material Science and Technology (IMST 2016)

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Natural gas plays an essential role in satisfying the needs of energy in the world. Xushen gas field has been holding the balance of gas produced areas in China since exploitated in 2004. However, the exploitation effect in the field is challenged by the high-cold climate and amounts of CO 2 in natural gas. A study of heat-tracing measures for preventing the formation of natural gas hydrates and selection of stainless steel pipelines and high-pressure facilities to inhibit CO 2 corrosion behavior in the gas field production were performed recently. A case about the transportation technical limits of inhibiting the hydrates formation under different conditions was determined in this work. The results indicate that electrical heat tracing technology has better economic benefits than hot-water in the process of inhibiting the gas hydrates, the principal reason of corrosion are CO 2 from the natural gas and Clin the produced water. When the differential pressure of CO 2 is above 29psi, it is promising that the steel should have exchanged to 316L as the corrosion resistant material. This study is beneficial to comprehend corrosion mechanism and facilitate the development and application of innovative anticorrosive material in gas field production facilities.

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Section: Inhibition Of Gas Hydratesmentioning

confidence: 99%

Inhibition of gas hydrates and corrosion behavior in gas field production facilities

Sun¹,

Xu²,

Zhang³

et al. 2016

Proceedings of the 2016 International Conference on Innovative Material Science and Technology (IMST 2016)

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“…In a world of growing energy demands, although shale oil, coal, natural gas and other new energies continue to develop, oil remains the leading source of primary energy [1,2,3,4]. Global oil consumption increased from 0.8 million barrels per day in 2000 to approximately 100 million barrels of consumption per day in 2017.…”

Section: Introductionmentioning

confidence: 99%

Microflow Mechanism of Oil Displacement by Viscoelastic Hydrophobically Associating Water-Soluble Polymers in Enhanced Oil Recovery

Zhong

Zhang

et al. 2018

Polymers

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Polymer flooding plays an important role in enhanced oil recovery (EOR), particularly in China, where partially hydrolyzed polyacrylamide (HPAM) and hydrophobically associating water-soluble polymers (HAWP) are used in onshore and offshore reservoirs, respectively. Many researchers have highlighted the elasticity of HPAM, which can be used to improve the sweep efficiency, i.e., the ratio of the area swept by an injected fluid to the oil area. On the other hand, fewer studies exist on the elasticity of HAWP. In this study, we investigate the flow of HAWP and Xanthan solutions with identical viscosities in core experiments in terms of elasticity; results reveal that the HAWP can produce shear thickening in the core. The constitutive equation for the HAWP can be obtained using the simulation results matched with the experimental data. On the basis of these experiments, we established a two-phase flow model of a polymer and oil, including the continuity, momentum, constitutive, and phase equations. The volume-of-fluid (VOF) method was used to track the interface between the two phases. A complex pore model was established based on the glass-etched model used in the experiment. We used the OpenFOAM platform to solve the mathematical model. The saturation, pressure, and stress tensor distributions were obtained. The results show that the displacement efficiency increased as the elasticity of the polymer increased; accordingly, the elasticity can enlarge the sweep area and decrease the residual oil saturation. As the elasticity increases, the stresses (the first normal stress, second normal stress, and shear stress) increase. Finally, the results obtained in this study can be used as a guideline in polymer design, screening, and optimization in the polymer flooding oilfields.

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“…According to BP's "Statistical Review of World Energy" data, oil prices have decreased from 2014 [1][2][3]. However, with the rapid growth in energy demand and a depletion of conventional oil, the development of nonconventional energy sources, such as viscous oil, bitumen, and shale oil, is significant for the entire petroleum industry [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…In this study, we carried out microvisual and core flooding experiments, comparing the polymer displacement characteristics in medium viscosity oil with glycerin flooding, using the same viscosity of the polymer solutions, and analyzed the mechanism of the elasticity effect on medium viscosity oil recovery, concluding that the elasticity contributes to oil recovery after water flooding at a different water 2 Geofluids sweep efficiency. Furthermore, these results were validated using reliable core experiments.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Medium Viscosity Oil Displacement Using Viscoelastic Polymer

et al. 2018

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With the growing demand for oil energy and a decrease in the recoverable reserves of conventional oil, the development of viscous oil, bitumen, and shale oil is playing an important role in the oil industry. Bohai Bay in China is an offshore oilfield that was developed through polymer flooding process. This study investigated the pore-scale displacement of medium viscosity oil by hydrophobically associating water-soluble polymers and purely viscous glycerin solutions. The role and contribution of elasticity on medium oil recovery were revealed and determined. Comparing the residual oil distribution after polymer flooding with that after glycerin flooding at a dead end, the results showed that the residual oil interface exhibited an asymmetrical “U” shape owing to the elasticity behavior of the polymer. This phenomenon revealed the key of elasticity enhancing oil recovery. Comparing the results of polymer flooding with that of glycerin flooding at different water flooding sweep efficiency levels, it was shown that the ratio of elastic contribution on the oil displacement efficiency increased as the water flooding sweep efficiency decreased. Additionally, the experiments on polymers, glycerin solutions, and brines displacement medium viscosity oil based on a constant pressure gradient at the core scale were carried out. The results indicated that the elasticity of the polymer can further reduce the saturation of medium viscosity oil with the same number of capillaries. In this study, the elasticity effect on the medium viscosity oil interface and the elasticity contribution on the medium viscosity oil were specified and clarified. The results of this study are promising with regard to the design and optimum polymers applied in an oilfield and to an improvement in the recovery of medium viscosity oil.

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The role of surface and subsurface integration in the development of a high-pressure and low-production gas field

Cited by 28 publications

References 38 publications

Inhibition of gas hydrates and corrosion behavior in gas field production facilities

Inhibition of gas hydrates and corrosion behavior in gas field production facilities

Microflow Mechanism of Oil Displacement by Viscoelastic Hydrophobically Associating Water-Soluble Polymers in Enhanced Oil Recovery

Experimental Study on Medium Viscosity Oil Displacement Using Viscoelastic Polymer

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