Experimental study on proppant diversion transportation and multi-size proppant distribution in complex fracture networks

Xiao, Hui; Li, Zhenming; He, Siyuan; Lu, Xinqian; Liu, Pingli; Jun, Li

doi:10.1016/j.petrol.2020.107800

Cited by 41 publications

(8 citation statements)

References 4 publications

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“…In order to achieve a high production capacity for fracturing wells, it is necessary to carry the proppant to the far end of the fracture and support the artificial fracture for a long time without displacement of the proppant [2]. How to improve the proppant delivery efficiency, how to maintain the stable placement of the proppant, and how to obtain better stacking height and porosity in the fracture have been challenging for researchers [3][4][5][6][7]. In the past few decades, researchers have carried out a large amount of research to determine the key factors affecting proppant transportation in order to effectively improve its efficiency.…”

Section: Introductionmentioning

confidence: 99%

High-Efficiency Proppant Placement Technology and Its Application

Guo,

Zhou,

Song

et al. 2024

Contemporary Developments in Hydraulic Fracturing

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Aiming at solving the problem of sand production and limited sand carrying distance during slick water fracturing of unconventional oil and gas reservoirs, an efficient proppant placement technology based on fiber structure stabilizer is innovatively developed: During the sand fracturing construction of oil and gas wells, the fiber and fiber structure stabilizer is pumped into the reservoir with proppant in sand-adding stage, and the components including fiber, stabilizer, proppant and drag reducing agent form a stable net-like structure to improve the proppant placement distance and stacking height, thus increasing the effective support volume. With this technology, the seepage mode of artificial fracture is changed and its conductivity of supporting fracture body is greatly improved; the critical flow rate of proppant flowback is increased up to tens of folds compared in the same operation condition. It has been applied in more than 30 wells of tight gas and shale oil and gas in China. The sand production rate after fracturing in tight gas was 79% lower than conventional fracturing without additives of fiber and fiber structure stabilizer. The effect of proppant flowback control and hydrocarbon stimulation is remarkable.

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Section: Introductionmentioning

confidence: 99%

High-Efficiency Proppant Placement Technology and Its Application

Guo,

Zhou,

Song

et al. 2024

Contemporary Developments in Hydraulic Fracturing

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“…There are numerous studies that have focused on the properties of proppants, including size distribution, shape, and conductivity [8,9,10]. The use of proppants is essential in hydraulic fracturing operations to create and maintain fractures in rock formations that enabling enables the optimum extraction of hydrocarbons [11].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study Of Proppant Based Fracturing Fluid Flowing Through Regular Fracture Geometry In Different Rock Samples.

Soomro,

Ansari,

Shams

et al. 2024

Special Topics Rev Porous Media

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The efficiency hydraulic fracturing procedure must be enhanced by introducing various types of proppants to extract maximum production from low permeability reservoirs. The problem with hydraulic fracturing procedure is the selection of appropriate proppant type for specific composition of reservoir rock. Therefore, this study provides an experimental investigation on flow behavior of proppant-based fracturing fluid through regular fracture geometries in different rock samples. The challenge for conducting such an investigation is to achieve detailed fracture response of fracture network while fracturing a rock at surface in laboratory. For this purpose, a specially designed assembly on laboratory scale was used to perform an experiment on fracturing. The assembly was designed to hold cylindrical core samples which are either outcropped from the original location or by forming limestone, sandstone molds. The results of this revealed that the permeabilities were altered from 2.3 to 3.3mD for limestone samples, 2.2 to 2.9mD for shale samples and 2.1 to 3.5mD for sandstone samples. Moreover, mechanical behavior was insightful for shale samples as their tensile strength ranged from 1080 to 130 psi with the average magnitudes of 700 to 720 psi. The bulk density of proppants was found to be 95.90 lbm/ft³ and the settling packed porosity of the proppants was calculated to be 0.420 with the specific gravity of 2.65. Further, the pattern of geometry observed in sandstone and shale formation was vertical linear while in limestone the shape of fracture was parabolic therefore such proppants are more fracture length yielding for sandstone and shale formations. The study concludes that limestone formation requires different configuration while fracturing through proppants and shale and limestone has similar fracture behavior while proppant based hydraulic fracturing. The outcomes of this study are very useful to design any fracture activity considering the fracture behavior of different formations to specific type of proppants.

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“…The fracture system of CBM reservoirs is the main channel for fluid penetration in coal. Hydraulic fracturing utilizes a high-pressure pumping unit on the surface to pump fracturing fluid into the bottom of the well at a displacement that far exceeds the suction capacity of the formation, and then hold the pressure at the bottom of the well to generate high pressure, which causes fractures when the pressure exceeds the ground stress and tensile strength of the rock [3][4][5][6], and then pumps sand-carrying fluid with proppant in accordance with a certain sand ratio, which expands the formed hydraulic fracture forward and effectively supports it, and then, when the fracturing construction is finished, the fracture is closed on the proppant, forming a fracture with a proppant in the formation, and then a fracture with the proppant in the formation. After the fracturing, the fracture closes on the proppant, forming sand-filled fractures with high inflow capacity in the formation, thus realizing the increase of production and injection of oil and gas wells [7][8][9][10].…”

Section: Introductorymentioning

confidence: 99%

Numerical Simulation of Proppant Transportation and Placement Law In Fractured Coal Reservoirs

Chu

2024

IJNRES

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Hydraulic fracturing technology has been widely used in the development of low-permeability oil fields, gas fields, and coalbed methane. The morphology of the sand dike formed by proppant deposition in the fracture determines the effective shape of the fracture, the effective volume, the flow conductivity, and the validity period of the fracture, and the research on the proppant transport law in the fracture is of great significance in optimizing the fracturing construction parameters and improving the fracturing production increase effect. In this paper, a systematic study on the proppant transport law in hydraulic fracturing fracture is carried out by numerical simulation, which reveals the mechanism of proppant settling and transport, clarifies the proppant transport and placement law under different working conditions, and puts forward the optimization strategy of hydraulic fracturing process on the basis of this study.

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Experimental study on proppant diversion transportation and multi-size proppant distribution in complex fracture networks

Cited by 41 publications

References 4 publications

High-Efficiency Proppant Placement Technology and Its Application

High-Efficiency Proppant Placement Technology and Its Application

Experimental Study Of Proppant Based Fracturing Fluid Flowing Through Regular Fracture Geometry In Different Rock Samples.

Numerical Simulation of Proppant Transportation and Placement Law In Fractured Coal Reservoirs

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