Results 111 to 120 of about 23,917 (167)
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2016
Aquifer pumping tests are an integral component of aquifer characterization because they provide quantitative data on large-scale aquifer hydraulic properties such as aquifer transmissivity, storativity, and the vertical hydraulic conductivity (leakance) of confining strata.
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Aquifer pumping tests are an integral component of aquifer characterization because they provide quantitative data on large-scale aquifer hydraulic properties such as aquifer transmissivity, storativity, and the vertical hydraulic conductivity (leakance) of confining strata.
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Experiences With Pumping Well Testing
SPE Production Engineering, 1989SummaryThis paper presents our recent experiences with pumping well testing using the acoustic method. Three areas of testing are examined: computation of changing liquid density throughout the liquid column at every timestep, interpretation of the test with simultaneous downhole pressure and flow-rate data, and static and dynamic responses of the ...
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A method for testing volumetric pumps
Journal of Medical Engineering & Technology, 1987This article describes a convenient method of checking the delivery rate of volumetric pumps at low flow rate settings. The method employs a tester previously described for use with syringe pumps.
M, Nieman, A L, Evans, J D, Steele
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Journal AWWA, 1940
MUNICIPAL pumping stations, centrifugal and turbine pumps have almost entirely replaced the earlier reciprocating type. As a rule, the reciprocating or plunger pumps were steam driven, and guarantees for efficiency were usually expressed in millions of foot pounds of work done on the water per 1,000 lb. of steam or per 100 lb. of coal used.
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MUNICIPAL pumping stations, centrifugal and turbine pumps have almost entirely replaced the earlier reciprocating type. As a rule, the reciprocating or plunger pumps were steam driven, and guarantees for efficiency were usually expressed in millions of foot pounds of work done on the water per 1,000 lb. of steam or per 100 lb. of coal used.
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Adaptive pumping test analysis
Journal of Hydrology, 1984Abstract Aquifer parameters have been determined adaptively from pumping-test data by employing the Kalman filter technique. The application of this technique leads to storativity and transmissivity estimates after each record of time-drawdown data. As any new drawdown measurement becomes available, the preceding estimate is updated in a manner which
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Multidepth Pumping Tests in Deep Aquifers
Groundwater, 2014Abstract Multidepth pumping tests ( MDPTs ), in which different sections of a screen are pumped in sequence, are not being used by hydrogeologists, despite the capability of such tests to resolve uncertainties in the estimation of aquifer characteristics.
N, Alam, T N, Olsthoorn
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Journal AWWA, 1949
to test pumping plants have been the subject of many fine articles. The matter is also amply covered in textbooks and in some very excellent bulletins prepared by pump and instrument manufacturers. Hence, this article will be confined to the specific field equipment, methods and practices employed by the Pacific Gas and Electric Co., in testing the ...
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to test pumping plants have been the subject of many fine articles. The matter is also amply covered in textbooks and in some very excellent bulletins prepared by pump and instrument manufacturers. Hence, this article will be confined to the specific field equipment, methods and practices employed by the Pacific Gas and Electric Co., in testing the ...
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1997
In the late 1970's, Vickers, Inc., recognized that their methods of establishing petroleum based fluid recommendations had become inadequate. They provided poor correlation with the field results in the higher pressure and higher speed pumps that had been developed for the mobile hydraulics market.
HT Johnson, TI Lewis
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In the late 1970's, Vickers, Inc., recognized that their methods of establishing petroleum based fluid recommendations had become inadequate. They provided poor correlation with the field results in the higher pressure and higher speed pumps that had been developed for the mobile hydraulics market.
HT Johnson, TI Lewis
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Test of Coal Slime Pumping by Single-Screw Pump
Advanced Materials Research, 2013Previous research on thick pastes such as coal slime was using two-cylinder piston pump as power equipment.Since the pressure fluctuation was big,flow measurement was not that accurate. In order to solve the problem, this paper will presents a feasibility study on conveying coal slime by single-screw pump. We used a single-screw pump as power equipment
Hua Xu Yang +4 more
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Testing of turbomolecular pumps
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, 1992Turbomolecular pumps (TMPs) are used to provide clean pumping to attain pressures down into the 10−10 Torr range. Some of our data indicated that the pumping speeds and compression ratios claimed by some manufacturers of TMPs were greatly overstated. To measure these parameters, an apparatus was constructed following AVS recommended practices. Hydrogen,
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