Influence of Undissolved Gas in Working Fluid on Dynamics of Hydraulic Drive of Equipment for Oil and Gas well Development

Lunev, A. S.; Никитин, А. А.; Шрам, В. Г.; Afanasov, V. I.; Kaizer, Yu F; Lysyannikov, А. V.

doi:10.1007/s10556-020-00721-y

Cited by 2 publications

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“…1,2 In the process of oil and gas field development, a large amount of water-based working fluid is often needed. 3 In the reservoir with water wettability, the migration of the water phase in the reservoir has a great adhesion resistance. Furthermore, it causes a waterlocked phenomenon in the reservoir, which increases the energy consumption in production and reduces the recovery of oil, gas, and working fluid.…”

Section: Introductionmentioning

confidence: 99%

“…The wettability of a reservoir plays an important role in oil and gas production and working fluid flowback. , In the process of oil and gas field development, a large amount of water-based working fluid is often needed . In the reservoir with water wettability, the migration of the water phase in the reservoir has a great adhesion resistance.…”

Section: Introductionmentioning

confidence: 99%

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Fluoropolymer Microemulsion: Preparation and Application in Reservoir Wettability Reversal and Enhancing Oil Recovery

et al. 2021

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Reservoir wettability is an important factor in the process of reservoir reconstruction. Especially in hydrophilic formation, it is easy to cause a water-locked phenomenon. A new type of fluoropolymer microemulsion was prepared by emulsion polymerization, and its structure and properties were characterized. The average particle size in the prepared emulsion was about 2.0 μm. The emulsion had good stability and wettability reversal performance for the storage of 30 days. After the treatment of 2.0 wt % emulsion, the contact angle between the core and water changed from 26 to 128°, the core surface free energy decreased from 66 to 2.6 mN/m, and the saturated water imbibition amount of the core decreased from 1.38 to 0.15 g. The ability of the fluoropolymer microemulsion to enhance oil recovery was evaluated by the visual displacement experiment. The fluoropolymer microemulsion can increase the displacement efficiency by more than 10%. The wettability of the core changed from hydrophilicity to hydrophobicity, and wettability reversal was achieved.

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Section: Introductionmentioning

confidence: 99%