... ions needed for the wettability alteration process in carbonates. The performance of polysulphate as an additive will be evaluated based on dissolution tests, chemical reactivity tests, and spontaneous imbibition on restored mixed wet chalk cores ( Ravindran 2019 ). Experimental work Materials...

... and saturation calculated by SHF. reservoir characterization imbibition lateral variability upstream oil & gas saturation rock type modelling impact field development reservoir lower shuaiba carbonate reservoir scenario fwl facies shf archie saturation petroleum development oman...

... compartmentalization imbibition de-risking fluid compartmentalization interpretation barik formation Introduction The Khazzan-Ghazeer field in Block 61 in Oman is a giant gas-condensate field primarily reservoired in Cambro-Ordovician siliciclastics of the Haima Supergroup. It currently produces ca. 1.5...

... from imbibition to drainage curves or vice versa, negative capillary pressure ( Pc ) values, which may occur in mixed-wetting conditions. We have designed KR-PC curves from a simple parametrized cubic Bézier polynomial. The Bézier polynomial was further rationalized to provide weight factors to create...

... Abstract Organic shale is characteristics of multi-component and multiple pore, making flow mechanism of water imbibition in shale very complicated. In this study, firstly, the micro pore structure and pore size of shale were quantitatively characterized by scanning electron microscope...

... Abstract The fluid fill concept of a complex carbonate reservoir of the Shuaiba Formation has been re-evaluated after 45 years of production. Structural changes post primary drainage resulted in a tilted contact towards the north east and water imbibition into the oil zone in a considerable...

... or a structural tilting after migration occurs, a shallower position of the new FWL involves an imbibition cycle to represent the initial saturation distribution in a 3D reservoir model. The methodology starts at the well level by building drainage saturation height functions (SHFs) typically from core capillary...

... the Nuclear-Magnetic-Resonance transverse relaxation time (NMR T2) on samples saturated by spontaneous imbibition of oil and brine. The wellbore stability was investigated by analyzing the changes in the NMR T2 distribution of each sample after imbibition sequences. The obtained results demonstrated...

... signatures in reference to the paleo-positions of the Wells. The structural evolution and corresponding hydrocarbon charging mechanisms (drainage and imbibition) have influenced the reservoir hydrocarbon saturation in the field from northeast to southwest. The northeast tilting was triggered by Zagros...

... Abstract Capillary pressure curves are one of the main input parameters in reservoir simulation: They are used to characterize the initial fluid distribution in the reservoir and control the recovery potential by spontaneous imbibition in naturally fractured reservoirs. To effectively...

.... Carbonate reservoirs dominate 70% of oil and 90% of gas reserves in Middle East region, and imbibition is the main mechanism for fracturing fluid up-take during the hydraulic fracturing stimulation process in these reservoirs. It has been estimated that only 10% to 35% of the fracturing fluids are recovered...

.... The imbibition saturation-capillary pressure hysteresis, the imbibition scanning curve(s) of the core SCAL measurement, can be simulated by the van Genuchten (VG) equation [12] , which is widely-used in solid-water science research for the simulation of the hysteresis effect of the water content and capillary...

... in this region has low viscosity. The performances of viscoelastic surfactant, surfactant imbibition, and coupled VES and surfactant imbibition formulation were evaluated. Experiment results indicated that for the coupled formulation, increased pressure drop caused by viscoelastic surfactant augmented the forced...

... on? In this work, we perform nuclear magnetic resonance (NMR) measurements on highly laminated source rocks which are sequentially saturated by spontaneous imbibition of diesel and 5% KCl brine. We probe the rate and capacity of oil/brine imbibition focusing on the wetting characteristics of the bedding planes...

... the conventional Land formalism for the calculation of imbibition scanning curves and gas trapping is replaced by a more general model allowing arbitrary trapping functions and accounting for the nature of the displacing fluid (oil, water, or a mixture of both). This new approach – which is thought to be necessary...

..., 164 ms and 63 ms for the topmost, middle and lowermost samples of the reservoir respectively. Electrical resistivity and capillary pressure-water saturation were also measured at ambient and reservoir (2500 psi and 85 °C) conditions using a DCI Pc-RI system mimicking drainage and imbibition...

... of LSW. Nine Spontaneous Imbibition (SI) experiments and six coreflood experiments were performed. Two sandstone types (Bandera and Buff Berea) with different clays contents and stock-tank crude oil samples were used in all the experiments. This work describes experimental studies of SI of oil by low...

... the fracturing fluid (water) in the small pores and microfractures ending with a water flowback which typically not exceeding 50% of the injected volume. The water imbibition mechanism by capillary forces can help explaining the reason behind the retained water in the shale matrix and the dynamic water...

... to provide an improved understanding of the water flood recovery and remaining oil saturation distribution within the transition zone by better definition of the scanning kr and Pc curves. Primary drainage, and imbibition from irreducible water saturation were measured for both kr and Pc to provide...

...Introduction Water-oil imbibition and secondary drainage capillary pressure measurements were performed by the centrifuge method on individual, 1.5-inch diameter plug samples using rotovaped stock tank oil and synthetic reservoir brine at a temperature of 170°F. Primary drainage capillary...