The Next Generation of Regenerative Catalytic Breakers for Use in Alkaline and High-Temperature Fracturing Fluids

2010 ◽  
Author(s):  
Charles David Armstrong ◽  
Richard Fowler Stevens ◽  
Hoang Van Le ◽  
Christopher J. Stephenson ◽  
Qi Qu
Keyword(s):  
High Temperature ◽  
Next Generation ◽  
Fracturing Fluids

High-Temperature Rheological Study of Foam Fracturing Fluids

1987 ◽  
Vol 39 (05) ◽  
pp. 613-619 ◽  
Author(s):  
P.C. Harris ◽  
V.G. Reidenbach
Keyword(s):  
High Temperature ◽  
Rheological Study ◽  
Fracturing Fluids

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.

SiC High Temperature Electronics for Next Generation Aircraft Controls Systems

1996 ◽  
Author(s):  
John F. Perkins ◽  
Richard H. Hopkins ◽  
Charles D. Brandt ◽  
Anant K. Agarwal ◽  
Suresh Seshadri ◽  
...  
Keyword(s):  
High Temperature ◽  
High Speed ◽  
Technology Development ◽  
Temperature Tolerance ◽  
Oxide Semiconductor ◽  
Power Device ◽  
Next Generation ◽  
Power Devices ◽  
Basic Work ◽  
Aircraft Controls

Several organizations, including Westinghouse, CREE, and ATM, as well as researchers in Japan and Europe, are working to develop SiC power devices for reliable, high power and high temperature environments in military, industrial, utility, and automotive applications. Other organizations, such as NASA Lewis and several universities, are also doing important basic work on basic SiC technology development. It has been recognized for two decades that the superior properties of SiC lead to range of devices with higher power, greater temperature tolerance, and significantly more radiation hardness than silicon or GaAs. This combination of superior thermal and electrical properties results in SiC devices that can operate at up to ten times the power density of Si devices for a given volume. Recent research has focused on the development of vertical metal oxide semiconductor field effect transistor (VMOSFET) power device technology, and complementary high speed, temperature-tolerant rectifier-diodes for power applications. We are also evaluating applications for field control thyristors (FCT) and MOS turn-off thyristors (MTO). The technical issues to be resolved for these devices are also common to other power device structures. The present paper reviews the relative benefits of various power devices structures, with emphasis on how the special properties of SiC enhance the desirability of specific device configurations as compared to the Si-based versions of these devices. Progress in SiC material quality and recent power device research will be reviewed, and the potential for SiC-based devices to operate at much higher temperatures than Si-based devices, or with enhanced reliability at higher temperatures will be stressed. We have already demonstrated 1000V breakdown, current densities of 1 kA/cm2, and measurements up to 400°C in small diodes. The extension of this work will enable the implementation of highly distributed aircraft power control systems, as well as actuator and signal conditioning electronics for next generation engine sensors, by permitting electronic circuits, sensors and smart actuators to be mounted on or at the engine.

scholarly journals AMADEUS: Next generation materials and solid state devices for ultra high temperature energy storage and conversion

2018 ◽  
Author(s):  
Alejandro Datas ◽  
Ana Belén. Cristobal ◽  
Carlos del Cañizo ◽  
Elisa Antolín ◽  
Michel Beaughon ◽  
...  
Keyword(s):  
High Temperature ◽  
Energy Storage ◽  
Solid State ◽  
Energy Storage And Conversion ◽  
Next Generation ◽  
Solid State Devices ◽  
Ultra High Temperature

Project Deep-Burn: Development of Transuranic Fuel for High-Temperature Helium-Cooled Reactors

2008 ◽  
Author(s):  
Robert M. Versluis ◽  
Francesco Venneri ◽  
David Petti ◽  
Lance Snead ◽  
Donald McEachern
Keyword(s):  
High Temperature ◽  
Nuclear Plant ◽  
Next Generation ◽  
Very High Temperature Reactor ◽  
High Temperature Reactor ◽  
Very High ◽  
The U.S

The helium-cooled, graphite-moderated Very High Temperature Reactor (VHTR) has become the centerpiece of the U.S. Department of Energy’s (DOE) Next Generation Nuclear Plant (NGNP) program. The NGNP program aims to construct a VHTR prototype, with the participation of industry, by the year 2021.

Development of the Next Generation Thermoplastic Hose Umbilical

2017 ◽  
Author(s):  
Alan Rutherford ◽  
Alan Dobson
Keyword(s):  
High Temperature ◽  
Deep Water ◽  
Development Program ◽  
Temperature Stability ◽  
Steel Tube ◽  
Polymer Materials ◽  
Asia Pacific ◽  
Next Generation ◽  
The North ◽  
Functional Components

Thermoplastic Control Umbilicals, as shown in Figure 1, have been deployed subsea for decades globally. Typically, these have been installed in harsh dynamic environments such as the North Sea, very cold environments such as the North Atlantic and very warm environments such as the coastal waters of Middle East and Asia Pacific. The inherent fatigue and corrosion resistance of the functional components can offer significant operational advantages while umbilical make-up and manufacturing process can offer significant cost and schedule advantages. As the industry has moved into deeper warmer water regions since the late 1990’s, such as the Gulf of Mexico and West Africa, some of the limitations of conventional thermoplastic umbilicals, such as inherent collapse resistance or design working pressures became barriers for the adoption of the technology. In recent years there have been many new polymer materials developed that provide increased tenacity and temperature stability which subsequently have enabled an evolution in thermoplastic hose technology. This has facilitated the development of the next generation of high temperature, high pressure, collapse resistant hoses that can be deployed in deep water. This paper defines the testing carried out on the constituent parts of the composite hose primarily focusing on the liner and details typical modes of degradation associated with high temperature, pressure or tension. The new material technologies will be benchmarked against conventional materials traditionally used in less aggressive environments. This paper will detail the results of the development program aimed at optimising the hose design process and implementing the cutting edge materials in order to qualify a robust series of hose designs qualified to the stringent requirements of ISO 13628-5 [1]. The paper will also detail the development of the new termination coupling which has been developed in parallel with the next generation hose and which provides a reliable and robust method of coupling the hose to the subsea control system or joining two lengths of hose together. The paper will conclude with a case study comparing a typical deep water installation of a steel tube umbilical with an equivalent thermoplastic umbilical, highlighting the benefits of the new thermoplastic umbilical designs.

A Brief Review of Models Representing Creep of Alloy 617

2005 ◽  
Author(s):  
Robert W. Swindeman ◽  
Michael J. Swindeman ◽  
Weiju Ren
Keyword(s):  
High Temperature ◽  
Nuclear Plant ◽  
Next Generation ◽  
Alloy 617 ◽  
Temperature Range ◽  
Damage Models ◽  
The Us ◽  
Creep Models ◽  
High Temperature Gas

Alloy 617 is being considered for the construction of components to operate in the Next Generation Nuclear Plant (NGNP). Service temperatures will range from 650 to 1000°C. To meet the needs of the conceptual designers of this plant, a materials handbook is being developed that will provide information on alloy 617, as well as other materials of interest. The database for alloy 617 to be incorporated into the handbook was produced in the 1970s and 1980s, while creep and damage models were developed from the database for use in the design of high-temperature gas-cooled reactors. In the work reported here, the US database and creep models are briefly reviewed. The work reported represents progress toward a useful model of the behavior of this material in the temperature range of 650 to 1000°C.

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