The efficiency is then used as the benchmark for determining whether a complete well performance analysis is warranted from the standpoint of making best use of personnel and economic resources to increase oil production. Torque analysis and proper balancing of the pumping unit are competed from the power measurement. This paper presents a series of case studies showing the application of power measurement to a variety of pumping systems and components, including conventional, Mark II, Rotaflex units and high efficiency motors. A new acoustic instrument has been developed for measuring the distance to the liquid level in the casing annulus of a well. The dual channel instrument accents the liquid level on a low frequency channel.
Collars are accented and recorded on a second channel.
The amplifier is automatically set to an optimum gain for best results. This new system improves the ability of the operator to determine an accurate liquid level depth and analyze the liquid level depth with casing pressure data to obtain the bottomhole pressure and perform a better well performance analysis. The static bottomhole pressure can be accurately measured in the normal gas lift well using an acoustic liquid level instrument. Procedures are provided that explain how the producing bottom hole pressure can be determined for various configurations of gas lift installations. Tables and charts are presented for rapid determination oil, liquid, and gas gradients.