Factors Affecting the Thermal Stability of Conventional Scale Inhibitors for Application in High Pressure/High Temperature Reservoirs

1999 ◽  
Author(s):  
S.J. Dyer ◽  
G.M. Graham ◽  
K.S. Sorbie
Keyword(s):  
Thermal Stability ◽  
High Pressure ◽  
High Temperature ◽  
Factors Affecting ◽  
High Pressure High Temperature ◽  
Thermal Stability Of

Microstructure, mechanical properties, and thermal stability of γ-Nb5Si3 under high temperature and high pressure

2021 ◽  
Vol 130 (13) ◽  
pp. 135104
Author(s):  
Juwei Wang ◽  
Haihua Chen ◽  
Zhengang Zhang ◽  
Bin Wang ◽  
Hongtao Ma ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
High Pressure ◽  
High Temperature ◽  
Thermal Stability Of

Effect of Nanoparticle Shape on Viscoelastic Surfactant Performance at High Temperatures

SPE Journal ◽  
2020 ◽  
pp. 1-19 ◽  
Author(s):  
Ahmed Hanafy ◽  
Faisal Najem ◽  
Hisham A. Nasr-El-Din
Keyword(s):  
Thermal Stability ◽  
High Pressure ◽  
High Temperature ◽  
Carrying Capacity ◽  
Spherical Particles ◽  
Formation Damage ◽  
Fluid Loss ◽  
Stability Range ◽  
Fracturing Fluids ◽  
High Pressure High Temperature

Summary Viscoelastic surfactants (VESs) have been used for acid diversion and fracturing fluids. VESs were introduced because they are less damaging than polymers. VESs’ high cost, low thermal stability, and incompatibility with several additives (e.g., corrosion inhibitors) limit their use. The goal of this study is to investigate the interaction of VES micelles with different nanoparticle shapes to reduce VES loadings and enhance their thermal stability. This work examined spherical and rod-shaped nanoparticles of silica and iron oxides. The effects of particle size, shape, and surface charge on a zwitterionic VES micellization were conducted. The physical properties were measured using zeta-potential, dynamic light scattering (DLS), and transmission electron microscopy (TEM). The rheological performances of VES solutions were evaluated at 280 and 350°F using a high-pressure/high-temperature rotational rheometer. The proppant-carrying capacity of the fracturing fluids was evaluated using a high-pressure/high-temperature see-through cell and dynamic oscillatory viscometer. The fluid loss and formation damage were determined using corefloods and computed-tomography scans. The interaction between nanoparticles and VES is strongly dependent on the VES concentration, temperature, nanoparticle characteristics, and concentration. The spherical particles at 7-lbm/1,000 gal loading extended the VES-based-fluid thermal stability at VES loading of 4 wt% up to 350°F. The nanorods effectively enhanced and extended the thermal-stability range of the VES system at VES concentration of only 2 wt%. Both particle shapes performed similarly at 4 wt% VES and 280°F. The addition of silica nanorods extended the thermal stability of the 4 wt% VES aqueous fluid, which resulted in an apparent viscosity of 200 cp for 2 hours. The addition of rod-shaped particles enhanced the micelle to micelle entanglement, especially at VES loading of 2 wt%. The use of nanoparticles enhanced the micelle/micelle networking, boosting the fluid-storage modulus and enhancing the proppant-carrying capacity. The addition of nanoparticles to the VES lowered its fluid-loss rate and minimized formation damage caused by VES-fluid invasion. This research gives guidelines to synthesize nanoparticles to accommodate the chemistry of surfactants for higher-temperature applications. It highlights the importance of the selected nanoparticles on the rheological performance of VES.

scholarly journals Ternary Metastable Nitrides ε-Fe2TMN (TM = Co, Ni): High-Pressure, High-Temperature Synthesis, Crystal Structure, Thermal Stability, and Magnetic Properties

2012 ◽  
Vol 24 (23) ◽  
pp. 4600-4606 ◽  
Author(s):  
Kai Guo ◽  
Dieter Rau ◽  
Lorenzo Toffoletti ◽  
Carola Müller ◽  
Ulrich Burkhardt ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Thermal Stability ◽  
High Pressure ◽  
Magnetic Properties ◽  
High Temperature ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
High Pressure High Temperature

Improving Thermal Stability of LiMn[sub 2]O[sub 4] Thin Films by In Situ Coating of α-MnO[sub 2] Using High-Pressure and High-Temperature Sputtering

2004 ◽  
Vol 7 (8) ◽  
pp. A235 ◽  
Author(s):  
G. S. Chen ◽  
Gin-Shiang Chen ◽  
H. H. Hsiao ◽  
R. F. Louh ◽  
C. J. Humphreys
Keyword(s):  
Thin Films ◽  
Thermal Stability ◽  
High Pressure ◽  
High Temperature ◽  
Thermal Stability Of ◽  
In Situ Coating

scholarly journals THE THERMAL-STABILITY OF AQUEOUS SOLUTION OF DIRECT DYES AT HIGH TEMPERATURE AND HIGH PRESSURE

1965 ◽  
Vol 21 (6) ◽  
pp. 333-339
Author(s):  
Gengo Nara ◽  
Yasuo Yamazaki ◽  
Saburo Okajima
Keyword(s):  
Thermal Stability ◽  
Aqueous Solution ◽  
High Pressure ◽  
High Temperature ◽  
Direct Dyes ◽  
Thermal Stability Of

scholarly journals High temperature thermal stability of nanocrystalline 316L stainless steel processed by high-pressure torsion

2017 ◽  
Vol 682 ◽  
pp. 323-331 ◽  
Author(s):  
Moustafa El-Tahawy ◽  
Yi Huang ◽  
Hyelim Choi ◽  
Heeman Choe ◽  
János L. Lábár ◽  
...  
Keyword(s):  
Thermal Stability ◽  
High Pressure ◽  
Stainless Steel ◽  
High Temperature ◽  
316L Stainless Steel ◽  
High Pressure Torsion ◽  
Thermal Stability Of

ChemInform Abstract: Ternary Metastable Nitrides ε-Fe2MN (M: Co, Ni): High-Pressure, High-Temperature Synthesis, Crystal Structure, Thermal Stability, and Magnetic Properties.

ChemInform ◽  
2013 ◽  
Vol 44 (11) ◽  
pp. no-no
Author(s):  
Kai Guo ◽  
Dieter Rau ◽  
Lorenzo Toffoletti ◽  
Carola Mueller ◽  
Ulrich Burkhardt ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Thermal Stability ◽  
High Pressure ◽  
Magnetic Properties ◽  
High Temperature ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
High Pressure High Temperature

The Ordered Phase Formation in Ti-Al-Ga Alloys

1970 ◽  
Vol 28 ◽  
pp. 440-441
Author(s):  
Shiro Fujishiro ◽  
Harold L. Gegel
Keyword(s):  
Thermal Stability ◽  
High Temperature ◽  
Titanium Alloys ◽  
Growth Kinetics ◽  
Stoichiometric Composition ◽  
Good Potential ◽  
Alpha Titanium ◽  
Cold Rolled ◽  
Kinetics Of ◽  
Thermal Stability Of

Ordered-alpha titanium alloys having a DO19 type structure have good potential for high temperature (600°C) applications, due to the thermal stability of the ordered phase and the inherent resistance to recrystallization of these alloys. Five different Ti-Al-Ga alloys consisting of equal atomic percents of aluminum and gallium solute additions up to the stoichiometric composition, Ti3(Al, Ga), were used to study the growth kinetics of the ordered phase and the nature of its interface.The alloys were homogenized in the beta region in a vacuum of about 5×10-7 torr, furnace cooled; reheated in air to 50°C below the alpha transus for hot working. The alloys were subsequently acid cleaned, annealed in vacuo, and cold rolled to about. 050 inch prior to additional homogenization

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