Experimental study of dynamic imbibition during water flooding of naturally fractured reservoirs

Harimi, Behrouz; Masihi, Mohsen; Mirzaei‐Paiaman, Abouzar; Hamidpour, Esmaeil

doi:10.1016/j.petrol.2018.11.008

Cited by 45 publications

(25 citation statements)

References 35 publications

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“…1a) (Xu et al, 2018) and part of open faces covered by water ( Fig. 1b) (Harimi et al, 2019;Zhang et al, 2019). For the first boundary condition, oil could only be produced by counter-current imbibition (Rangel-German and Kovscek, 2006a;Mason et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Recent advances in spontaneous imbibition with different boundary conditions

Meng¹,

Cai²

2018

Capillarity

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Spontaneous imbibition plays an important role in many practical processes, such as oil recovery, hydrology, and environmental engineering. The past few years have witnessed a rapid development in the mechanism analysis and industry applications of spontaneous imbibition. In this paper, we focus on boundary conditions of spontaneous imbibition, which has important effects on the imbibition rate and efficiency. Various boundary conditions are first generated using different capillary model and introduced focusing on the fundamental physical mechanisms. Then, the studies of spontaneous imbibition in core scale are reviewed. The feature is discussed and the relative permeability for coand counter-current imbibition is analyzed. The scaling of imbibition data with different boundary conditions is also presented by combination of experimental and numerical methods. An analytical model to describe spontaneous imbibition is provided at the end.

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Section: Introductionmentioning

confidence: 99%

Recent advances in spontaneous imbibition with different boundary conditions

Meng¹,

Cai²

2018

Capillarity

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“…This is the process of absorption of water as the wetting phase into rock, in which saturation by the wetting phase rises while that by the non-wetting phase reduces. This phenomenon can be induced by water flooding [17] or surfactant flooding [18,19]. A shift in wettability from oil-wet to water-wet increases water imbibition.…”

Section: Water Imbibitionmentioning

confidence: 99%

Introductory Chapter: Developments in the Exploitation of Unconventional Hydrocarbon Reservoirs

Eshiet¹

2019

Exploitation of Unconventional Oil and Gas Resources - Hydraulic Fracturing and Other Recovery and Assessment Techniques

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“…In the case of water injection, capillary imbibition could be responsible for oil recovery from water-wet matrix blocks surrounded by water-filled fractures. [3] However, a large number of carbonate fractured reservoirs are oil-wet or mixed-wet, and, thus, imbibition would not be an efficient recovery mechanism. [4] Alternatively, gas injection, by activating the gravity drainage mechanism, may be known as the main enhanced oil-recovery method in fractured carbonate reservoirs.…”

Section: Introductionmentioning

confidence: 99%

An insight into the formation of liquid bridge and its role on fracture capillary pressure during gravity drainage in fractured porous media

2021

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The formation of liquid bridges can maintain capillary continuity between matrix blocks during gas/oil gravity drainage in fractured reservoirs. A travelling oil drop draining into a fracture either forms a liquid bridge or breaks into detached drops. However, the different characteristics of a travelling drop during its elongation and required conditions for transformation into a liquid bridge are not well described in the published literature. In this work, a onedimensional model based on slender-drop theory is employed that holds gravity, viscosity, and surface tension forces but ignores inertia. This model, together with Young-Laplace equation, gives the fracture capillary pressure.Then, the effect of liquid influx rate, viscosity, surface tension, density difference, contact angle, and contact radius on the shape, critical (or maximum) volume, and length of travelling liquid drops is analyzed and compared with the results in the absence of flow (ie, pendant drops). Critical length is shown to be an increasing function of both liquid viscosity and the influx rate, but the effect of surface tension and density is somewhat case dependent. Furthermore, it is found that if fracture aperture is equal to or less than the critical length of a drop, the formed liquid bridge would be stable. Also, fracture capillary pressure is shown to be remarkable in thin fractures (apertures of less than 50 μm) with embedded liquid bridge. On the other hand, the suspended oil drops, even when reaching critical length, cannot provide considerable capillary pressure.

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Experimental study of dynamic imbibition during water flooding of naturally fractured reservoirs

Cited by 45 publications

References 35 publications

Recent advances in spontaneous imbibition with different boundary conditions

Recent advances in spontaneous imbibition with different boundary conditions

Introductory Chapter: Developments in the Exploitation of Unconventional Hydrocarbon Reservoirs

An insight into the formation of liquid bridge and its role on fracture capillary pressure during gravity drainage in fractured porous media

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