Innovative Capillary Tubing Applications for Production Enhancement

2011 ◽  
Author(s):  
Brad Pate
Keyword(s):  
Capillary Tubing

scholarly journals A Liquid-core Liquid-cladding Optical Waveguide Based on Thermal Gradients across the Laminar Flow of Water in Capillary Tubing

2019 ◽  
Vol 35 (2) ◽  
pp. 215-218
Author(s):  
Manami NAKAMURA ◽  
Hiroyasu MURATA ◽  
Kiichi SATO ◽  
Kin-ichi TSUNODA
Keyword(s):  
Laminar Flow ◽  
Optical Waveguide ◽  
Liquid Core ◽  
Thermal Gradients ◽  
Capillary Tubing

scholarly journals The sorption of hydrogen on copper. Part II.—The rate of solution

1931 ◽  
Vol 133 (822) ◽  
pp. 522-535 ◽  
Keyword(s):  
Room Temperature ◽  
Thermal Capacity ◽  
Mercury Surface ◽  
Nichrome Wire ◽  
Boiling Points ◽  
Spark Gap ◽  
Capillary Tubing ◽  
Alumel Thermocouple ◽  
Adsorption Of Gases ◽  
Iron Tube

Before attention was directed to the adsorption of gases on the surfaces of solids much work was done on the “occlusion” at higher temperatures. Above 400° C. solution usually occurs rapidly, and because of the decrease in surface by sintering, the adsorption is negligible compared with the absorption. In this paper, investigations on the sorption of hydrogen on copper are described at temperatures intermediate between 25° C. when adsorption is the principal phenomenon and 200° C. when solution has become important. Over this range of temperature both adsorption and absorption have been measured. On bringing the hydrogen into contact with the copper there was always an immediate fall in pressure attributable to adsorption, followed by a slower fall as absorption proceeded. This latter process, of course, became quicker at higher temperatures. Experimental . Apparatus .—The apparatus used was almost exactly the same as that described in the previous paper. The only difference was that instead of the thermostat at 25° C. a furnace was used. A copper tube about 50 cm. long and 5 cm. in diameter, wound with nichrome wire, had placed inside it, for half its length, a tightly fitting iron tube with thick walls (1 cm.). The adsorption bulb went into this half, and the low conductivity and large thermal capacity of the iron hindered fluctuations in temperature from reaching the bulb. In the lower half of the furnace, where the absence of the iron tube allowed the temperature to vary promptly with a changed heating current, was a thermoregulator bulb containing air, connected by capillary tubing to a U-tube in which mercury made contact with a tungsten point. On the other side of the U-tube a system of the same volume, with a bulb immersed in a thermostat, counteracted the effect of alterations of room temperature. An extra U-tube of mercury enclosed nitrogen around the spark gap to prevent dirtying the mercury surface by oxidation. With this arrangement the temperature could be kept constant to within half a degree for any length of time. Temperatures were measured by a chromel-alumel thermocouple calibrated at the boiling points of suitable liquids.

Qualification of Chemicals/Chemical Injection Systems for Downhole Continuous Chemical Injection

2014 ◽  
Author(s):  
Christine Stewart-Liddon ◽  
Neil J Goodwin ◽  
Gordon M Graham ◽  
Tore Tjomsland ◽  
Britt Marie Hustad ◽  
...  
Keyword(s):  
Best Practice ◽  
Method Development ◽  
Test Methods ◽  
Laboratory Method ◽  
Chemical System ◽  
Capillary Tubing ◽  
Application Specific ◽  
Continuous Chemical ◽  
Continuous Injection ◽  
Detrimental Impact

Abstract Downhole Continuous Injection (DHCI) Systems are increasingly being installed in wells for the delivery of a range of chemicals, including application-specific formulations and multi-component chemicals. Although costly, these systems offer the advantage of controlling chemical doses, preventing interruptions to production by providing constant delivery of chemicals and can be used in place of squeeze treatments that can be costly or inappropriate if formation damage is a risk. However, such systems are not without challenges for engineering design, operation and the effective qualification required for the chemicals before use. DHCI involves chemical injection through multi-kilometre capillary tubing, as well as injection through inline filters and one or more injection valves. Failures of continuous injection systems have been linked to a variety of causes such as corrosion, particulate formation or chemical gunking, resulting in line plugging or blockage of injection valves and filters. The work described in this paper was initiated to investigate known DHCI issues within Statoil fields and to develop laboratory tests to identify characteristics of chemical formulations that result in similar behaviour, and thus allow such formulations to be de-selected prior to use. The paper describes a range of chemical qualification methods for DHCI systems, focusing on qualifying the chemical for use in a DHCI. Test methods have been developed which demonstrate the ways in which changes in physical properties can readily occur under downhole injection which can have a considerable detrimental impact on the integrity and effectiveness of the DHCI system. These methods have now been finalised into a set of chemical qualification protocols for Statoil. This paper will present the basis of these test protocols and thereby intends to present best practice for chemical/system qualification for DHCI. Results from both extensive laboratory method development studies and field case histories will be included throughout the paper to illustrate the challenges faced and the qualification solutions developed.

Capillary electrophoresis of immunoglobulin using flat capillary tubing

1991 ◽  
Vol 14 (5) ◽  
pp. 351-357 ◽  
Author(s):  
Tomonori Izumi ◽  
Takae Nagahori ◽  
Tsuneo Okuyama
Keyword(s):  
Capillary Electrophoresis ◽  
Capillary Tubing

Water Based Propellant for Cold Gas Thruster

2015 ◽  
Author(s):  
John B. Lee ◽  
Adam Huang
Keyword(s):  
Microelectromechanical Systems ◽  
Solution Concentration ◽  
Propulsion System ◽  
Solution Temperature ◽  
Nanoelectromechanical Systems ◽  
Vaporization Rate ◽  
Solution Properties ◽  
Small Satellites ◽  
Capillary Tubing ◽  
Micro Propulsion

Microelectromechanical systems (MEMS) and nanoelectromechanical systems (NEMS) have produced ideas and techniques for creating new devices at the micro/nano scale. Nano/pico satellites have limited orientation capability partly due to the current state of microthruster devices. Development of a self-contained micro propulsion system would enable dynamic orbital maneuvering of pico- and nano-class satellites. The act of vaporizing a fluid via nanochannels to vacuum has not been studied and the limitations are unknown, but it could provide a novel method of propulsion for small satellites. However, solution properties are transient during vaporization which affects fluid flow. Thus, experiments have been designed to measure solution properties including density, evaporation rate, and vaporization pressure. A setup has been designed monitor the solution mass and volume inside a vacuum chamber. Evaporation of the solution is affected by the vacuum pressure, capillary tubing diameter, solution temperature, and solution concentration. When maintained at the solution vapor pressure, the vaporization rate has ranged from 0.003 to 0.025 grams per minute across the varying concentrations. Preliminary results have indicated some interesting trends regarding solution composition and vaporization rate. The results obtained from preliminary experiments will be used in conjunction with future experiments to determine the viability of nanochannels to be used in the small satellite propulsion system.

scholarly journals A NEW FORM OF DIFFERENTIAL MICRORESPIROMETER

1940 ◽  
Vol 24 (2) ◽  
pp. 135-149 ◽  
Author(s):  
Burris Cunningham ◽  
Paul L. Kirk
Keyword(s):  
Room Temperature ◽  
Gas Mixture ◽  
Chamber Volume ◽  
Capillary Tubing ◽  
New Form ◽  
Entire Apparatus

1. A microrespirometer suitable for measuring oxygen uptakes from 0.1 to 10λ per hour is described. 2. The sensitivity of the instrument may be readily altered by substituting different sizes of capillary tubing. 3. By means of replaceable brass plugs the chamber volume of this instrument may be varied from 700 to less than 40λ. 4. No thermostat is required for the operation of the instrument at room temperature. 5. It may be charged at one temperature and used at a widely different one. 6. The chambers may be filled with any desired gas mixture. 7. Two solutions may be mixed during the course of an experiment. 8. The entire apparatus may be sterilized.

scholarly journals A Report on Design & Setup of Peltier Module Based Air Cooler

2020 ◽  
Vol 9 (1) ◽  
pp. 2458-2463
Keyword(s):  
Common Knowledge ◽  
Coefficient Of Performance ◽  
Heat Radiation ◽  
Air Conditioners ◽  
Power Efficient ◽  
Capillary Tubing ◽  
Long Run ◽  
Peltier Module ◽  
Air Cooler ◽  
Manufacturing Techniques

With the increase in global warming levels day by day leading to the increase in average temperature throughout the year which makes people living in areas infested with loadshedding more hectic and troublesome. As the contemporary cooling method including Coolers and Air-conditioners do not work on the inverter for backup electricity purposes which make them useless as such during the peak heat hours. So, as to combat the problem with portability, economy and cost-effectiveness in mind the concept of alternative air conditioning using TEC while being used of the grid and rechargeable. While it is a common knowledge that co-efficient of performance of TEC is sub-par when compared to vapor compression air refrigeration used today but with optimized manufacturing techniques and forced convection of cold liquid increasing the effective cooling for the device and humidity controlling using moisture absorbent along with capillary tubing as thermal siphoning for heat reduction at the hot sink instead of air fin to reduce ambient heat radiation. Basically in this research we tried to increase the coefficient of performance of the Peltier Module using various techniques. The Module is also not power efficient , so in long run we can’t use plenty of them either two or three also we need to create the cooling effect . So keeping everything in mind we use the module accordingly to achieve the goal and make it a model for mass production

Sign in / Sign up

Export Citation Format

Share Document