Experimental study on multiphase flow in 3D-printed heterogeneous, filled vugs

Yang，Wei1; Zhang，Dongxiao2

2022

10.1016/j.petrol.2021.109497

JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING   影响因子和分区

0920-4105

1873-4715

The fractured-vuggy carbonate reservoir possesses the characteristics of a highly discrete distribution of fractures and vugs, a wide scale range, and the coexistence of free flow and porous flow. However, it also exhibits a high degree of filling media in vugs, including chemical sedimentation, carried fillings and collapsed fillings, which poses challenges for studying the mechanism of enhanced oil recovery (EOR) in filled fracture-vug reservoirs. In this paper, 3D printing technology is utilized to construct heterogeneous, filled models. With a multiphase flow visualization platform, displacement experiments of different injection-production methods, including water injection, gas injection and the co-injection of water and gas, are conducted to elucidate the mechanisms of EOR. It is found that the lower is the gas injection rate or the higher is the water injection rate, the higher is the recovery factor for a horizontal filled vug. For a vertical filled vug, gravity exerts a greater influence on the gas swept area, but inertial forces dominate fluid flow when the water injection log Ca exceeds −2.68. In addition, in a displacement experiment of a simultaneous injection of gas and water, the gas-water mixing zone appears until log Ca ≥ −4.38 (gas) and log Ca ≥ −2.68 (water). Then, the synergistic gas-water effect displaces the oil phase in the filled medium with a higher recovery rate. Therefore, the displacement of gas and water co-injection is preferred over sequential injections, and the injection velocity of gas and water should be compatible.

3D printing Enhanced oil recovery Filled vug Fracture-vug reservoirs Multiphase flow

SCI ; EI

英语

通讯

National Science and Technology Major Projects of China[2016ZX05014-004-006]

Energy & Fuels ; Engineering

Energy & Fuels ; Engineering, Petroleum

WOS:000710878400018

ELSEVIER

20213910944336

3D printers ; Enhanced recovery ; Filling ; Gases ; Multiphase flow ; Oil well flooding ; Petroleum reservoirs

Oil Field Production Operations:511.1 ; Oil Fields:512.1.1 ; Fluid Flow, General:631.1 ; Materials Handling Methods:691.2 ; Printing Equipment:745.1.1 ; Materials Science:951

GEOSCIENCES

2-s2.0-85115622553

Scopus

1.BIC-ESAT,ERE,and SKLTCS,College of Engineering,Peking University,Beijing,100871,China
2.School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Yang，Wei,Zhang，Dongxiao. Experimental study on multiphase flow in 3D-printed heterogeneous, filled vugs[J]. JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,2022,208.

Yang，Wei,&Zhang，Dongxiao.(2022).Experimental study on multiphase flow in 3D-printed heterogeneous, filled vugs.JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,208.

Yang，Wei,et al."Experimental study on multiphase flow in 3D-printed heterogeneous, filled vugs".JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING 208(2022).