Alkyl Glycine Surfactant: An Efficient High-Temperature Resistant and Biodegradable Foaming Agent for Colloidal Gas Aphron (CGA) Drilling Fluid

Zhu, Weiping; Zheng, Xiuhua

doi:10.1134/s0965544121110220

Cited by 4 publications

(3 citation statements)

References 41 publications

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“…Temperature is another crucial influence factor for the application of surfactants in EOR. Most surfactants lose interfacial activity at high formation temperatures (Zhu & Zheng, 2021). Thus, the effects of temperature on the interfacial activity of surfactants should be investigated carefully.…”

Section: Resultsmentioning

confidence: 99%

Interfacial properties of cationic and anionic Gemini surfactant mixtures

Zhang

et al. 2022

J Surfact & Detergents

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The possibility and the prospect of cationic/anionic (“catanionic”) surfactant mixtures based on sulfonate Gemini surfactant (SGS) and bisquaternary ammonium salt (BQAS) in the field of enhanced oil recovery was investigated. The critical micelle concentration (CMC) of SGS/BQAS surfactant mixtures was 5.0 × 10−6 mol/L, 1–2 orders of magnitude lower than neat BQAS or SGS. A solution of either neat SGS or BQAS, could not reach an ultra‐low interfacial tension (IFT); but 1:1 mol/mol mixtures of SGS/BQAS reduced the IFT to 1.0 × 10−3 mN/m at 100 mg/L. For the studied surfactant concentrations, all mixtures exhibited the lowest IFT when the molar fraction of SGS among the surfactant equaled 0.5, indicating optimal conditions for interfacial activity. The IFT between the 1:1 mol/mol SGS/BQAS mixtures and crude oil decreased and then increased with the NaCl and CaCl2 concentrations. When the total surfactant concentration was above 50 mg/L, the IFT of SGS/BQAS mixtures was below 0.01 mN/m at the studied NaCl concentrations. Adding inorganic salt reduced the charges of hydrophilic head groups, thereby making the interfacial arrangement more compact. At the NaCl concentration was above 40,000 mg/L, surfactant molecules moved from the liquid–liquid interface to the oil phase, thus resulting in low interfacial activity. In addition, inorganic salts decreased the attractive interactions of the SGS/BQAS micelles that form in water, decreasing the apparent hydrodynamic radius (DH, app) of surfactant aggregates. When the total concentration of surfactants was above 50 mg/L, the IFT between the SGS/BQAS mixtures and crude oil decreased first and then increased with time. At different surfactant concentrations, the IFT of the SGS/BQAS mixtures attained the lowest values at different times. A high surfactant concentration helped surfactant molecules diffuse from the water phase to the interfacial layer, rapidly reducing the IFT. In conclusion, the cationic‐anionic Gemini surfactant mixtures exhibit superior interfacial activity, which may promote the application of Gemini surfactant.

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Section: Resultsmentioning

confidence: 99%

Interfacial properties of cationic and anionic Gemini surfactant mixtures

Zhang

et al. 2022

J Surfact & Detergents

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“…This directly affects the foam’s ability to transport solids and leads to poor hole cleaning, impacting drilling operations . In contrast, stable foams offer consistency and predictable rheological properties . Unstable foams can cause segregation, free liquid presence, and two-phase flow, resulting in pressure fluctuations, formation damage, and well control problems. , Addressing unstable foam is essential for successful foam drilling.…”

Section: Introductionmentioning

confidence: 99%

“…16 These surfactants are well-regarded for their ability to produce stable and effective foams, which is a critical factor in improving drilling performance. Based on the literature review, commonly employed anionic surfactants include sodium dodecyl sulfate (SDS), 17 alpha olefin sulfonate (AOS), 18,19 and cetyltrimethylammonium Bromide (CTAB) 20 for drilling foams. Another promising secondary surfactant, ammonium alcohol ether sulfate or alcohol ethoxy sulfate (AES), was introduced by Memon et al, 21 demonstrating excellent foam properties and stability.…”

Section: Introductionmentioning

confidence: 99%

Impact of Eco-Friendly Drilling Additives on Foaming Properties for Sustainable Underbalanced Foam Drilling Applications

Gowida,

Elkatatny,

Ibrahim

2024

ACS Omega

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Underbalanced foam drilling stands out as a drilling technique acclaimed for its capacity to enhance safety and efficiency in operations. Utilizing foams as drilling fluids offers several benefits over traditional methods, including lower density, diminished formation damage, and augmented borehole stability. However, the persistent challenge of sustaining foam stability in demanding conditions, particularly amid elevated water salinity and alkaline environments, remains a critical issue. Current literature lacks comprehensive insights into foam stability under such specific circumstances, raising concerns about the practicality of numerous reported foaming agents in field applications. This study aims to fill this knowledge void to align with industry standards. With a heightened focus on sustainability due to mounting environmental considerations, the research explores the use of an eco-friendly surfactant, ammonium alcohol ether sulfate (AAES). Additionally, the investigation delves into the impact of environmentally friendly drilling additives-polyanionic cellulose (PAC), carboxymethyl cellulose (CMC), and starch-on the stability of bulk foam under mildly alkaline conditions. Employing a dynamic foam analyzer, diverse foam properties of AAES foams were assessed, encompassing stability, foamability, and bubble structure. The results demonstrated that the optimal concentrations of the tested additives, in the order of PAC > CMC > starch, significantly prolonged the half-life of the AAES foam bubbles. The introduction of PAC and CMC additives elevated the viscosity of AAES foaming solutions, enhancing the liquid retention within the foam structure. In contrast, starch addition exerted no influence on the solution viscosity and did not impede liquid drainage, although it did reduce bubble coalescence. Furthermore, the PAC-and CMC-based AAES foams manifested as considerably wetter foams with a rounded bubble structure, while the starch-based AAES foam exhibited a dry foam characterized by a distinct polyhedral bubble structure. These findings offer valuable insights into the potential application of the AAES surfactant in foam drilling, showcasing its efficacy in improving foam stability and contributing to the evolution of eco-friendly drilling practices.

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