Hydrophobic epoxy resin coated proppants with ultra-high self-suspension ability and enhanced liquid conductivity

Fan, Fan; Li, Fengxia; Tian, Shouceng; Sheng, Mao; Khan, Waleed Ali; Shi, Aiping; Zhou, Yang; Xu, Quan

doi:10.1016/j.petsci.2021.09.004

Cited by 15 publications

(12 citation statements)

References 33 publications

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“…A polymer is a chemical material composed of a series of smaller monomers covalently bonded, and polymers can be made through addition and condensation reactions. Polymers are classified into organic and inorganic polymers, but they can also be classified into thermosetting polymers and thermoplastic polymers according to their temperature properties. ,, There has been a considerable amount of research on the application of polymers as proppant coatings. ,,− …”

Section: Proppant Coating Materialsmentioning

confidence: 99%

“…The settling velocity of the proppant is mainly affected by the wettability and diameter of the proppant and the viscosity and velocity of the transport fluid . At present, there are two main methods for preparing a self-suspending proppant: (1) coating the surface of the proppant with hydrophobic materials ,− and (2) attaching swelling materials to the surface of the proppant to increase the volume of the proppant. , The preparation process of self-suspending proppant is fast, which can reduce the cost of preparation and transportation. Self-suspended proppant can be suspended in the fracturing fluid for a long time (Figure ), which ensures that the proppant can migrate long distances in the fracture.…”

Section: Coated Proppantmentioning

confidence: 99%

“…When the fluid transporting the particles is water, the hydrophobic surface particles have better self-suspending ability and can be carried by the fluid for longer distances. , The hydrophobic nature of the proppant surface causes air bubbles to adhere to the proppant surface, increasing the buoyancy of the proppant. A superhydrophobic self-suspending proppant was prepared by coating epoxy resin on ceramic proppant, and its self-suspending ability was 16 times that of the conventional proppant. Hydrophobically associating water-soluble polymer (HAWP) and nanosilica were coated on ceramic proppant, and the construction time was significantly shortened after the field experiment of two wells, M13-X and M13-Y, in block M. In this case, the fracturing fluid consumption decreased by 334 and 351 m 3 , respectively, and the oil output increased by 286 and 320 m 3 , respectively.…”

Section: Coated Proppantmentioning

confidence: 99%

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Review and Perspectives of Coated Proppant Technology

Liu

Huang

et al. 2023

Energy Fuels

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Conventional proppants have the problem of proppant flowback and the inability to fully distribute along long fractures. To solve these problems, coated proppants have emerged and have been successfully used in many oilfields. Polymers are widely used in the petroleum industry, and one of their functions is for proppant coatings. Polymer coatings can change the mechanical properties of the proppant, improve the fracture conductivity of the proppant, and give the proppant other properties, such as self-suspending, low-density, antiflowback, and hydrophobic properties. This paper reviews the polymers and polymer nanocomposites commonly used in proppant coatings, introduces the performance characteristics of various functional proppants, and describes the latest developments regarding coated proppants, which can be of reference for petroleum workers.

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Section: Proppant Coating Materialsmentioning

confidence: 99%

Section: Coated Proppantmentioning

confidence: 99%

Section: Coated Proppantmentioning

confidence: 99%

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Review and Perspectives of Coated Proppant Technology

Liu

Huang

et al. 2023

Energy Fuels

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“…The conventional coated proppant has the characteristics of low density and breaking rate by coating the proppant surface with low density and certain strength chemical coating, so as to obtain higher fracture conductivity. − The coated proppant with different properties can be obtained by changing the coated material. Fan developed hydrophobic epoxy resin coated proppants with the ultra-high self-suspension ability and enhanced liquid conductivity . Zhang developed a self-suspension proppant coated with modified polyacrylamide .…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Transport Law of Different Fracturing Granular Materials in Fracture

Guo

et al. 2022

Energy Fuels

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Hydraulic fracturing is an important technology for the development of unconventional oil and gas. The complexity and filling of fractures are important factors for determining the fracturing effect. In order to control the fracture shape and improve the filling of the fracture, it is necessary to inject granular materials such as a temporary plugging agent (TPA) and special performance proppant into the fracture. Understanding the transport law of these granular materials in the fracture can guide us to optimize the fracturing scheme and improve the fracturing effect. In this paper, we studied the transport characteristics of granular TPA, floating agent, new coated quartz sand, micron proppant, ultra-low-density (ULD) proppant, and conventional quartz sand based on the large visual granular transport equipment. The results show that when the TPA of different sizes is injected successively to plug fractures, 20 mPa•s fracturing fluid is suggested for carrying 16/20 mesh TPA in the early stage, and slickwater is suggested for carrying 40/60 mesh TPA in the later stage. The methods of stopping the pump many times with low floating agent concentration or stopping the pump once with high concentration are two ways to realize that the floating agent is laid in the upper part of the fracture to form an artificial barrier. When the injection rate is large, we can only choose the latter. In slickwater, the newly coated quartz sand produces bubbles on its surface and adsorbs each other, which enhances its transport capacity and reduces the amount of sand used. Micron proppant and ULD proppant have the characteristics of less settlement in the major fracture and more settlement in the branched fracture, so they are suitable for filling branched fractures.

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“…For instance, epoxy, vinyl, polyurethane, polyesters, and furan are the widely employed resins to coat the frac sand. Due to their chemical inertness and higher mechanical characteristics [ 20 , 21 , 29 , 30 , 31 ]. Despite the advantages of surface modification of frac sand with resin, it can only increase its stress resistance by up to 7500 psi [ 28 ].…”

Section: Introductionmentioning

confidence: 99%