Structural Transformation of the Void-Pore Space of a Lime Reservoir During HCl Treatment

Kadyrov, Rail; Glukhov, M. S.; Statseuko, E. O.; Galiulliu, B. M.

doi:10.1007/s10553-018-0928-5

Cited by 3 publications

(2 citation statements)

References 6 publications

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“…2 Thus, it is an important aspect for laboratory measurements, which impacts all tests connected with reservoir characteristics and processes, e.g., capillary pressure and relative permeability. 3,4 Therefore, the representativity of wettability is essential for such research results. 5 If there is no preferred interaction of the rock with oil and water, then such wettability is called neutral.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Wettability controls the position of fluids in the porous structure of a hydrocarbon reservoir and the consequent transportation through the pore channels during the dynamic process of production . Thus, it is an important aspect for laboratory measurements, which impacts all tests connected with reservoir characteristics and processes, e.g., capillary pressure and relative permeability. , Therefore, the representativity of wettability is essential for such research results …”

Section: Introductionmentioning

confidence: 99%

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Determination of Sessile Drop Wetting Angle Based on μCT without the Direct Angle Measurement

2023

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Wettability is an important factor that controls the position and transport of fluids in the porous structure of a hydrocarbon reservoir. Direct quantitative wettability measurement methods include determination of the contact angle. One of the popular laboratory methods for its measurement is the sessile drop method, where the droplet of liquid is set onto the solid sample surface and the angle between liquid and solid phases in a 2D profile image is measured using a high-resolution optical subsystem. However, this method has disadvantages connected with three complex factors: two-dimensionality of data, image resolution, and the presence of wetting domains on the solid surface. In this work, we propose a method based on 3D μCT scanning of a sessile drop on the surface of a material and determination of the value of the wetting angle using drop height and volume measurements. Since the contact angle is not measured directly, this makes it possible to obtain averaged contact angle values for the entire droplet and leads to more stable values for individual measurements in comparison with the standard optical method. The results demonstrate that contact angles obtained using the μCT method differ from the values obtained by various fitting techniques of the 2D optical method: μCT-values are higher for hydrophilic interaction by 4–6° and lower for hydrophobic interaction by 12–17°. Such differences are associated with the lower susceptibility of the proposed method to the influence of the gravitational effect, which leads to a flattening of the droplet shape and distortion of angle measurements on the 2D projections. However, the described method showed close contact angles for water drops on a polytetrafluoroethylene surface with values obtained in microgravity and can be helpful for its prediction. It also has relatively low sensitivity to the absolute values of the drop volume and drop segmentation errors.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Determination of Sessile Drop Wetting Angle Based on μCT without the Direct Angle Measurement

2023

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Application 4D-Microtomography for Oil Displacement Experiments

Kadyrov

Statsenko

Glukhov

2022

Advances in Geophysics, Tectonics and Petroleum Geosciences

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Measurement of Damköhler number on the X-Ray computed tomography basis in the process of heavy oil carbonate reservoir acidizing

Kadyrov

2019

IOP Conf. Ser.: Earth Environ. Sci.

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Nowadays, cases of the joint use of thermal and chemical methods of enhanced oil recovery have become more frequent. In this regard, acid treatment has an important role, which allows increasing the productivity of wells with low-permeability carbonate reservoirs. At the experimental level, the presence of an optimal injection mode has been proven, that depends on the dimensionless of Damköhler number and leads to the formation of “wormholes” of dissolution with increasing reservoir permeability. In this work, a new optimized method for calculating the Damköhler number based on X-ray computed tomography data is proposed. A comparison of the calculation of values by the classical and the new technique for different wormholes is presented.

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Structural Transformation of the Void-Pore Space of a Lime Reservoir During HCl Treatment

Cited by 3 publications

References 6 publications

Determination of Sessile Drop Wetting Angle Based on μCT without the Direct Angle Measurement

Determination of Sessile Drop Wetting Angle Based on μCT without the Direct Angle Measurement

Application 4D-Microtomography for Oil Displacement Experiments

Measurement of Damköhler number on the X-Ray computed tomography basis in the process of heavy oil carbonate reservoir acidizing

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