A research into recyclable foam fluid for petroleum exploration and development

Tang, Ming; He, Shiming; Xiong, Jiyou; Zheng, Fang

doi:10.1016/j.jngse.2014.08.012

Cited by 8 publications

(2 citation statements)

References 21 publications

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“…Foam is a thermodynamically unstable system [72]. The stability of foam increases with the concentration of the foaming agent and foam proportion but decreases with increasing temperature [73]. Foam undergoes decay, declining the performance of the fracturing fluid system.…”

Section: Foam-based Working Fluidmentioning

confidence: 99%

A Review of Fracturing and Enhanced Recovery Integration Working Fluids in Tight Reservoirs

Shang,

Dong,

Tan

et al. 2024

Processes

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Tight reservoirs, characterized by low porosity, low permeability, and difficulty in fluid flow, rely on horizontal wells and large-scale hydraulic fracturing for development. During fracturing, a significant volume of fracturing fluid is injected into the reservoir at a rate far exceeding its absorption capacity. This not only serves to create fractures but also impacts the recovery efficiency of tight reservoirs. Therefore, achieving the integration of fracturing and enhanced recovery functions within the working fluid (fracturing-enhanced recovery integration) becomes particularly crucial. This study describes the concept and characteristics of fracturing-enhanced recovery integration and analyzes the types and features of working fluids. We also discuss the challenges and prospects faced by these fluids. Working fluids for fracturing-enhanced recovery integration need to consider the synergistic effects of fracturing and recovery; meet the performance requirements during fracturing stages such as fracture creation, proppant suspension, and flowback; and also address the demand for increased recovery. The main mechanisms include (1) enlarging the effective pore radius, (2) super-hydrophobic effects, and (3) anti-swelling properties. Fracturing fluids are pumped into fractures through pipelines, where they undergo complex flow in multi-scale fractures, ultimately seeping through capillary bundles. Flow resistance is influenced by the external environment, and the sources of flow resistance in fractures of different scales vary. Surfactants with polymerization capabilities, biodegradable and environmentally friendly bio-based surfactants, crosslinking agents, and amino acid-based green surfactants with outstanding properties will unleash their application potential, providing crucial support for the effectiveness of fracturing-enhanced recovery integration working fluids. This article provides important references for the green, efficient, and sustainable development of tight oil reservoirs.

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Section: Foam-based Working Fluidmentioning

confidence: 99%

A Review of Fracturing and Enhanced Recovery Integration Working Fluids in Tight Reservoirs

Shang,

Dong,

Tan

et al. 2024

Processes

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“…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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