Proppant transport in hydraulic fractures by creating a capillary suspension

Bello, Ayomikun; Ozoani, Joy; Куряшов, Д. А.

doi:10.1016/j.petrol.2021.109508

Cited by 13 publications

(2 citation statements)

References 20 publications

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“…Field operation is often based on experience or software simulations, and there are few systematic experimental studies [32,33]. The rheology of the liquid, flow rate, concentration, and density of proppant affect the sandcarrying capacity of slickwater, which is not conducive to grasping the laws of proppant placement, roll-up, and sand settlement distribution during sand addition [34][35][36][37]. Thus, it is necessary to carry out systematic research and analysis to compare and select fracturing fluid and proppant parameters and optimize fracturing operation parameters to ensure the formation of effective proppant placement and improve fracture conductivity [38][39][40].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study for the Effects of Different Factors on the Sand-Carrying Capacity of Slickwater

Peng

Liu³

et al. 2023

Geofluids

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With the continuous exploration and development of unconventional oil and gas reservoirs, volume fracturing technology becomes one of the necessary measures for developing shale gas and tight sandstone gas reservoirs effectively. Volume fracturing technology usually uses slickwater and drag-reducing agent as the core of the fracturing system. The composition of the fracturing system is the main factor determining its performance. Polyacrylamide has many amide groups in its main chain, high activity, and controllable performance, often in solid powder and liquid emulsion states. Furthermore, polyacrylamide which is the water-soluble drag-reducing agent is most widely used in applying current shale gas slickwater fracturing operations. Due to the low viscosity and poor sand-carrying capacity of slickwater, proppant easily settles at the bottom of hydraulic fractures. This phenomenon influences the stimulation effect of volume fracturing. Therefore, the law of sand carrying and placement of proppant in hydraulic fractures in volume fracturing plays an essential role in determining the success of the stimulation effect of volume fracturing. Through the visualization device of proppant transport in the fracture, the settlement of proppant in the fracture was studied experimentally. And through experimental equipment, the effects of different operation pumping rates, liquid viscosity, proppant type, and proppant pumping schedule on the stimulation effect were studied. The experimental results can provide strong support for volume fracturing into well material optimization and operation parameter optimization for unconventional oil and gas reservoirs.

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Section: Introductionmentioning

confidence: 99%

Experimental Study for the Effects of Different Factors on the Sand-Carrying Capacity of Slickwater

Peng

Liu³

et al. 2023

Geofluids

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“…Tong et al 21 studied the effect of the branch fracture angle on proppant migration during slickwater transport, indicating that the smaller the branch fracture angle, the more the proppant deposition in the branch fracture. Bello et al 22 used plexiglass to simulate fractures experimented with capillary suspensions for proppant transport in fractures and established standards for their use in hydraulic fracturing fluid formulations. Chun et al 23 designed a plank support device to study the effect of fracture inclination on proppant transport.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on Proppant Transport in Supercritical Carbon Dioxide under Different Fracture Shapes: Flat, Wedge-Shaped, and Bifurcated

Xie

Kang

et al. 2022

Energy Fuels

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As a new type of waterless technology, supercritical carbon dioxide fracturing has been widely studied by scholars in recent years, and the migration characteristics of the corresponding proppant in supercritical carbon dioxide still need further research. In this paper, the Eulerian–Eulerian computational fluid dynamics method was used to study the transport capacity of supercritical carbon dioxide, and the UDF method was used to simulate the physical parameters of supercritical carbon dioxide. In view of the deficiencies of previous studies, the special cases of wedge-shaped fractures and bypass fractures are considered, and the influence of large-span pressure and temperature on migration is first analyzed in plane fractures, which makes this study more complete. The results show that: (1) compared with slickwater, the proppant transport channel in supercritical carbon dioxide is 30% smaller at 305 K and 10 MPa. (2) The transport capacity of supercritical carbon dioxide increases with the increase of pressure and decreases with the increase of temperature. But when the pressure or temperature is too high, they have little effect on it. (3) In wedge-shaped fractures, the proppant stack height and length increase initially as the shrinkage rate of fracture width (the ratio of the fracture reduced width to the fracture length) increases. However, as the fracture width ratio increases, the maximum proppant stack height decreases in the later stage. (4) In bifurcated fractures, with the increase of bypass angle, the area of proppant in the bypass zone tends to decrease. The width of the bypass inlet has little effect on the proppant settlement in the bypass. This study further understands the migration law of proppant in supercritical carbon dioxide in fractures.

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Drilling Waste as a Promising Man-Made Material for the Synthesis of Aluminosilicate Proppant

Tretyak

Chumakov²,

Smoliy³

et al. 2023

Lecture Notes in Civil Engineering

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Proppant transport in hydraulic fractures by creating a capillary suspension

Cited by 13 publications

References 20 publications

Experimental Study for the Effects of Different Factors on the Sand-Carrying Capacity of Slickwater

Experimental Study for the Effects of Different Factors on the Sand-Carrying Capacity of Slickwater

Numerical Study on Proppant Transport in Supercritical Carbon Dioxide under Different Fracture Shapes: Flat, Wedge-Shaped, and Bifurcated

Drilling Waste as a Promising Man-Made Material for the Synthesis of Aluminosilicate Proppant

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