Investigating Effects of Water Blockage on Oil Recovery Factor by Using Surfactant into Completion Fluid – Wolfcamp Formation

Mansour, Ahmed Gh; Gamadi, Talal; Algadi, Otman; Emadi, Hossein

doi:10.15530/ap-urtec-2021-208408

Cited by 4 publications

(1 citation statement)

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“…The performance of surfactants as flowback aids also depends on their ability to lower IFT and concomitant capillary forces, allowing both the fracturing fluid and the oil to more easily traverse the narrow pore throats which comprise the microfracture networks (Kim et al, 2016; Liang et al, 2017), for which studies have demonstrated positive correlations between reductions in capillary pressure and fluid‐oil IFT and improved hydrocarbon permeabilities (Liang et al, 2015). In general, it is recognized that surfactants useful in the application will reduce IFT to within the range of low, ~0.1 mN/m, to ultralow, <0.001 mN/m, levels (Chai et al, 2019; Mansour et al, 2021; Tangirala & Sheng, 2018; Wijaya & Sheng, 2020b). However, it is important to recognize that the selection and use of surfactants is quite system dependent and not always straightforward.…”

Section: Introductionmentioning

confidence: 99%

Nonionic and anionic surfactants as flowback aids in hydraulic fracturing methods of crude oil production

Clements

2023

J Surfact & Detergents

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Surfactants find utility in hydraulic fracturing operations for their ability to modify rock wettability and increase the flowback of fracturing fluid following proppant delivery. The performance of a series of nonionic and anionic surfactants was evaluated by gravity drainage displacement testing. Alkylbenzenesulfonates having alkyl chains possessing at least 16 carbons were among the best performers, yet a similar surfactant having an alkyl chain possessing only ~12 carbons performed quite poorly. These data illustrate that a critical chain length exists for this series. Lauryldimethylamine oxide also performed well. In general, those surfactants possessing the greatest ionic character outperformed nonionic surfactants. Critical micelle concentration, surface tension, contact angle, relative solubility number, and hydrophilic–lipophilic balance were determined for each surfactant studied. Unexpectedly however, few correlations between any of these physical and surface properties and performance in gravity drainage displacement tests were identified, underscoring the complexity of selecting surfactants suitable in the application. These data suggest that more real‐world test methods, employing stationary phases, temperatures and pressures that better mimic the fields and individual wells being considered, are needed to better guide surfactant selection.

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Section: Introductionmentioning

confidence: 99%

Nonionic and anionic surfactants as flowback aids in hydraulic fracturing methods of crude oil production

Clements

2023

J Surfact & Detergents

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Experimental investigation of zwitterionic surfactant for enhanced oil recovery in unconventional reservoir: A study in the middle bakken formation

Oguntade,

Fadairo,

et al. 2024

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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A Comprehensive Review on Screening, Application, and Perspectives of Surfactant-Based Chemical-Enhanced Oil Recovery Methods in Unconventional Oil Reservoirs

et al. 2023

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Surfactant-based chemical-enhanced oil recovery (EOR) methods have been recognized to be effective in both conventional and unconventional oil reservoirs. However, the nanopore size and low permeability characteristics of unconventional reservoirs hinder the wide application of the chemical EOR methods and have greater requirements for chemical agents. Thorough understanding of the rock−fluid−chemical interactions is the key to production improvement and economy development of unconventional formations. This paper is a systematic review of the literature focused on the performance evaluation and application potential of chemical EOR methods. To address the technical requirement, crucial features of the tight and shale formations and properties of the typically used chemicals are introduced. Many studies in recent decades have revealed that surfactant-based formulations have the capability to increase oil recovery through reducing interfacial tension, altering surface wettability, enhancing aqueous penetration, improving oil mobility, and then promoting spontaneous imbibition. The probable mechanisms of chemical EOR are summarized to demonstrate their potential and to guide the formulation development for reservoirs. Laboratory experiments of chemical screenings are presented to discuss the selection criteria of the appropriate formulation for respective EOR projects. Traditional measurements and novel experimental methods provide a comprehensive understanding of the chemicals corresponding to their application conditions. The outcome of recent pilot field tests in major formations is summarized to show the application feasibility and improvement schemes of chemical EOR. Problems currently existing and possible solutions are discussed to point out future research directions of the related field. Summarizing and analyzing of the problems, challenges, and future respects could help guide the design of chemical EOR projects. This review provides a more comprehensive understanding of the chemical performance in unconventional reservoirs and addresses the significance of appropriate screening methods and sufficient field knowledge for the success of chemical EOR operations.

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Investigating Effects of Water Blockage on Oil Recovery Factor by Using Surfactant into Completion Fluid – Wolfcamp Formation

Cited by 4 publications

References 0 publications

Nonionic and anionic surfactants as flowback aids in hydraulic fracturing methods of crude oil production

Nonionic and anionic surfactants as flowback aids in hydraulic fracturing methods of crude oil production

Experimental investigation of zwitterionic surfactant for enhanced oil recovery in unconventional reservoir: A study in the middle bakken formation

A Comprehensive Review on Screening, Application, and Perspectives of Surfactant-Based Chemical-Enhanced Oil Recovery Methods in Unconventional Oil Reservoirs

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