Before detailing the basic steps to shoot a liquid level, this article will present few benefits of the operation. Fluid Level measurements can provide invaluable information to assist anyone that has an interest in both understanding and evaluating well, or reservoir, performance.
When combined with a surface pressure measurement, the fluid depth in a wellbore can be used to calculate the pressure at the sandface, for either a producing or shut-in well status.
Sandface pressure determination is paramount to help evaluate reservoir characteristics and pressure depletion, as well as determining the producing performance of a well.
A good understanding of counterbalance is vital to the successful operation of surface sucker rod pumping units. Poor counterbalance practices can cause early failure of the gear reducer gearing and will result in excessive energy cost.
Non-counterbalanced lever system:
The figure above represents a simple non-counterbalanced lever system. On the up-stroke, by pulling down on the end of a beam, a man is lifting a bucket full of water having a combined weight of 150 lbs.
Note that the upstroke effort of the man is a substantial 150 lbs.