First Application of Residue-Free Fluid System for High Temperature Fracturing Treatment in Saudi Arabian Carbonate Formations

2017 ◽  
Author(s):  
Zillur Rahim ◽  
Adnan Al-Kanaan ◽  
Mohamed Zeghouani ◽  
Mohamed Khalifa ◽  
Driss Krich
Keyword(s):  
High Temperature ◽  
Saudi Arabian ◽  
Free Fluid ◽  
Fluid System ◽  
Carbonate Formations

Reduced-Polymer-Loading, High-Temperature Fracturing Fluids by Use of Nanocrosslinkers

SPE Journal ◽  
2016 ◽  
Vol 22 (02) ◽  
pp. 622-631 ◽  
Author(s):  
Feng Liang ◽  
Ghaithan Al-Muntasheri ◽  
Hooisweng Ow ◽  
Jason Cox
Keyword(s):  
High Temperature ◽  
Gas Flow ◽  
Laboratory Data ◽  
Gelling Agent ◽  
Formation Damage ◽  
Fluid System ◽  
Temperature Range ◽  
Enhanced Production ◽  
Fracturing Fluids ◽  
Polymer Loading

Summary In the quest to discover more natural-gas resources, considerable attention has been devoted to finding and extracting gas locked within tight formations with permeability in the nano- to microdarcy range. The main challenges associated with working in such formations are the intrinsically high-temperature and high-pressure bottom conditions. For formations with bottomhole temperatures at approximately 350–400°F, traditional hydraulic-fracturing fluids that use crosslinked polysaccharide gels, such as guar and its derivatives, are not suitable because of significant polymer breakdown in this temperature range. Fracturing fluids that can work at these temperatures require thermally stable synthetic polymers such as acrylamide-based polymers. However, such polymers have to be used at very-high concentrations to suspend proppants. The high-polymer concentrations make it very difficult to completely degrade at the end of a fracturing operation. As a consequence, formation damage by polymer residue can reduce formation conductivity to gas flow. This paper addresses the shortcomings of the current state-of-the-art high-temperature fracturing fluids and focuses on developing a less-damaging, high-temperature-stable fluid that can be used at temperatures up to 400°F. A laboratory study was conducted with this novel system, which comprises a synthetic acrylamide-based copolymer gelling agent and is capable of being crosslinked with an amine-containing polymer-coated nanosized particulate crosslinker (nanocrosslinker). The laboratory data have demonstrated that the temperature stability of the crosslinked fluid is much better than that of a similar fluid lacking the nanocrosslinker. The nanocrosslinker allows the novel fluid system to operate at significantly lower polymer concentrations (25–45 lbm/1,000 gal) compared with current commercial fluid systems (50–87 lbm/1,000 gal) designed for temperatures from 350 to 400°F. This paper presents results from rheological studies that demonstrate superior crosslinking performance and thermal stability in this temperature range. This fracturing-fluid system has sufficient proppant-carrying viscosity, and allows for efficient cleanup by use of an oxidizer-type breaker. Low polymer loading and little or no polymer residue are anticipated to facilitate efficient cleanup, reduced formation damage, better fluid conductivity, and enhanced production rates. Laboratory results from proppant-pack regained-conductivity tests are also presented.

A Novel Viscoelastic Surfactant Fluid System Incorporating Nanochemistry for High-Temperature Gravel Packing Applications

2018 ◽  
Author(s):  
Nirupama Vaidya ◽  
Valerie Lafitte ◽  
Sergey Makarychev-Mikhailov ◽  
Mohan Kanaka Raju Panga ◽  
Chidi Nwafor ◽  
...  
Keyword(s):  
High Temperature ◽  
Fluid System ◽  
Gravel Packing ◽  
Viscoelastic Surfactant

Laboratory Studies of Ternary Surfactant Formulation for EOR in Oil-Wet, High-Temperature Carbonate Formations

2018 ◽  
Author(s):  
Maura C. Puerto ◽  
Jose Luis Lopez-Salinas ◽  
Guoqing Jian ◽  
George J. Hirasaki ◽  
Clarence A. Miller
Keyword(s):  
High Temperature ◽  
Laboratory Studies ◽  
Carbonate Formations

Acid Placement: An Effective VES System to Stimulate High-Temperature Carbonate Formations

2012 ◽  
Author(s):  
Ahmed Mohamed Gomaa ◽  
Jennifer Cutler ◽  
Qi Qu ◽  
Kay Cawiezel
Keyword(s):  
High Temperature ◽  
Carbonate Formations

Drilling Fluid Development and Performance Evaluation of Deep and Ultra-Deep High-Density Saturated Brine

2012 ◽  
Vol 524-527 ◽  
pp. 1382-1388
Author(s):  
Ping Quan Wang ◽  
Yang Bai ◽  
Gang Peng ◽  
Zhi Wei Qian
Keyword(s):  
High Temperature ◽  
Drilling Fluid ◽  
High Density ◽  
Deep Drilling ◽  
Fluid System ◽  
Experimental Conditions ◽  
Performance Factors ◽  
Complex Formulation ◽  
Deep Well ◽  
Processing Optimization

Due to the high temperature , great pressure and complex lithology of super-deep well bottom, there exist such problems such as high solid concentration, multiple but inaccurate treating chemicals, complex formulation with instability of drilling fluid system, resulting in a frequent occurrence of underground complex accident and a waste of a lot of manpower and material resources. Therefore, based on the analysis of performance factors of ultra-deep drilling fluid system, the approach of regulating water based drilling fluid properties of super-deep well has been found. Moreover, through screening and processing optimization of treating chemicals of ultra-deep well by single-factor method, three sets of anti-high-density and anti-high-temperature saturated brine drilling fluid systems with few kinds of treating chemicals, concise and simplified system, including: ① saturated brine drilling fluid with anti-temperature 180 °C and density 2.40 g/cm3 ; ② saturated brine drilling fluid with anti-temperature 200 °C and density 2.40g/cm3; ③ saturated brine drilling fluid with anti-temperature 220 °C and density 2.40g/cm3 . After the the evaluation of the overall performance of these three systems under respective experimental conditions, the results show that all of these systems have such advantages as good and strong rheology, water loss building capacity, inhibition, lubricity and blocking ability, etc, which could meet the requirements of ultra-deep drilling under different circumstances.

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