Nayā sāhitya, Volume 38, Issues 2-121996 |
From inside the book
Results 1-3 of 77
Page 70
... pumping system . Downhole energy losses The rod pumping system does its useful work while lifting a given amount of liquid from the bottom of the well to the surface . The hydraulic power is easily calculated with Equa- tion 1 ( see ...
... pumping system . Downhole energy losses The rod pumping system does its useful work while lifting a given amount of liquid from the bottom of the well to the surface . The hydraulic power is easily calculated with Equa- tion 1 ( see ...
Page 74
... pump size . The curves clearly show that by increasing the pump size , the attained maximum lifting efficiency values increase for all tapers . There- fore , use of bigger plungers with corre- spondingly slower pumping speeds is always ...
... pump size . The curves clearly show that by increasing the pump size , the attained maximum lifting efficiency values increase for all tapers . There- fore , use of bigger plungers with corre- spondingly slower pumping speeds is always ...
Page 76
... pumping . Design principles The early rod string design methods all use the simplifying assumption that the string is exposed to a simple ten- sion loading . Examination of the rod loads during a complete pumping cycle , however , shows ...
... pumping . Design principles The early rod string design methods all use the simplifying assumption that the string is exposed to a simple ten- sion loading . Examination of the rod loads during a complete pumping cycle , however , shows ...
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