Successful Application of TSE-Based Fracturing Fluids in Proppant Fracturing for Unconventional Carbonate Source Rock

Al-Taq, Ali A.; AlKhaldi, Mohammed; Alfakher, Basil; Mechkak, Karim

doi:10.2118/191432-18ihft-ms

Cited by 3 publications

(3 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The primary structure of mannanases in different GH families is different, but they are similar in their spatial arrangement, (β/α)8-barrel protein folds, and are assembled into clan GH-A . Mannanases often exhibit modular structures consisting of the CBM, catalytic domain(s), and additional functional domain(s) . Under ideal conditions, the enzyme can break down the macromolecular structure into oligomers and monomers attacking specific sites, thus significantly reducing the gel viscosity, enhancing their flowability.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Delayed Breaker Systems To Remove Residual Polymer Damage in Hydraulically Fractured Reservoirs

Ghosh

Abdelrahim

Ghosh³

et al. 2021

ACS Omega

View full text Add to dashboard Cite

Hydraulic fracturing is a widely used technology to enhance the productivity of low-permeability reservoirs. Fracturing fluids using guar as the rheology builder leaves aside residual polymer layers over the fractured surface, resulting in a restricted matrix to fracture flow, causing reduced well productivity and injectivity. This research developed a specialized enzyme breaker and evaluated its efficiency in breaking linear and cross-linked guar-polymer gel as a function of time, temperature, and breaker concentration targeting a high-temperature carbonate reservoir. The study began with developing a high-temperature stable galacto-mannanase enzyme using the "protein-engineering" approach, followed by the optimization of fracturing fluids and breaker concentrations measuring their rheological properties. The thermal stability of the enzyme breaker vis-a-vis viscosity reduction and the degradation pattern of the linear and cross-linked gel observed from the break tests showed that the enzyme is stable and active up to 120 °C and can reduce viscosity by more than 99%. Further studies conducted using a high-temperature high-pressure HT-HP filter press for the visual inspection of polymer cake quality, filtration loss rates, and cake dissolution efficiency showed that a 6 h enzyme treatment degrades the filter cake by 94−98% compared to 60−70% degradation in 72 h of the natural degradation process. Coreflooding studies, under simulated reservoir conditions, showed the severity of postfracture damage (up to 99%), which could be restored up to 95% on enzyme treatment depending on the treatment protocol and the type of fracturing gel used.

show abstract

Section: Methodsmentioning

confidence: 99%

“…31 Mannanases often exhibit modular structures consisting of the CBM, catalytic domain(s), and additional functional domain(s). 34 Under ideal conditions, the enzyme can break down the macromolecular structure into oligomers and monomers attacking specific sites, thus significantly reducing the gel viscosity, enhancing their flowability.…”

Section: Methodsmentioning

confidence: 99%

Delayed Breaker Systems To Remove Residual Polymer Damage in Hydraulically Fractured Reservoirs

Ghosh

Abdelrahim

Ghosh³

et al. 2021

ACS Omega

View full text Add to dashboard Cite

show abstract

“…Table 1 provides a brief list of their categories and functions. The fracturing fluids are water-or oil-based [24] and are further subdivided, as below.…”

Section: Frac Fluids and Their Propertiesmentioning

confidence: 99%

Residual Damage, Its Consequences, and Remedial Measures on Post Hydrofrac Well Productivity: Learnt Lessons

2022

View full text Add to dashboard Cite

Hydraulic fracturing or hydro-frac fluids can impede well production due to the damage caused to the reservoir formation and fracture face, generated from adverse interactions with reservoir rock. Understanding the mechanisms of hydraulic fracturing, optimum treatment designs, and pumping/pressure profiles is critical for hydro-frac success. However, to realize the full potential of fracturing and the mitigation strategies for reservoir and fracture conductivity damage during and after its occurrence, fracturing must be considered during the design phase itself. This article provides a brief overview of hydro-frac techniques, including design, optimization, modeling, commonly used proppants, and fracturing fluid benefits and consequences based on critically reviewed case studies. However, the primary focus of this article is on the potential of fracture conductivity damage and the intrinsic mechanisms in hydraulic fracturing. The article presents updated information on various damage mitigation processes established through laboratory investigation and field implementation. The authors expect that the provided workflow in this article will be helpful to researchers and stimulate engineers to a great extent.

show abstract

Mega Hydraulic Fracturing Operations with Innovative Efficiency Transformation

Alhosani,

Al Shehhi,

Refaei

et al. 2024

Adipec

View full text Add to dashboard Cite

As United Arab Emirates (UAE) has untapped the unconventional resources, various studies have been implemented based on the uniqueness of resources and the operational challenges. As widely known, unconventional resources are closely related to operation efficiency to provide economical values to the shareholders. Earlier in 2024, a transformative plan to develop unconventional resources was launched. An unconventional resource transformative plan involves strategic development and utilization of non-traditional energy sources from carbonate source rocks to meet growing energy demands while reducing cost and environmental impact. This approach focuses on innovative hydrocarbon extraction technologies, such as multistage hydraulic fracturing on horizontal well, alongside sustainable practices that reduce carbon emissions. The plan aims to diversify energy portfolios, enhance energy security, and support economic growth by tapping into these abundant but technically challenging resources. By integrating advanced research, regulatory frameworks, and community engagement, the plan seeks to balance the benefits of unconventional resources with the need for environmental stewardship and social responsibility. Unconventional resource ramp-up plans outline a strategic approach to scale up operations to efficiently access these challenging reserves. This paper introduces transformative approaches to hydraulic fracturing in the UAE, emphasizing efficiency, cost reduction, and sustainability in unconventional resource operations. The efficiency project began with industry alignment, encompassing organizational behavior, drill-to-fracture well construction, operational practices, and the logistical environment. It extends to well engineering details that incorporate efficiency enablers. All these plans are currently being implemented in the project ramp up phase during various multi-year roadmaps, introducing a groundbreaking approach that successfully balances subsurface challenges with economic value. As these strategies are put into action, the project is already demonstrating enhanced efficiency in resource extraction and significant cost reductions. Economically, the project is achieving its goals of maximizing resource utilization. These early successes highlight the effectiveness of this new approach, setting a strong foundation for long-term sustainability and profitability in unconventional resource development.

show abstract

Successful Application of TSE-Based Fracturing Fluids in Proppant Fracturing for Unconventional Carbonate Source Rock

Cited by 3 publications

References 23 publications

Delayed Breaker Systems To Remove Residual Polymer Damage in Hydraulically Fractured Reservoirs

Delayed Breaker Systems To Remove Residual Polymer Damage in Hydraulically Fractured Reservoirs

Residual Damage, Its Consequences, and Remedial Measures on Post Hydrofrac Well Productivity: Learnt Lessons

Mega Hydraulic Fracturing Operations with Innovative Efficiency Transformation

Contact Info

Product

Resources

About