Paper: The Load Indicator - Its Use and Operation

The proper and economical operation of pumping wells is highly desirable, for the basic objective of any oil producing company is to recover the maximum amount of oil at a minimum cost. In these days of high taxes and low profits, it I mandatory that the efficient producing of pumping wells be maintained. This is growing in importance since a constantly increasing number of wells are being put on the pump. A formula for arriving at the cost of lifting oil will vary with the producer. However, of primary consideration is the cost of operations per day and included in this cost must be pulling and pump repair costs. More and more producers are recognizing that greater attention should be paid to pumping wells, but all complain of the lack of trained personnel or lack of time. Much discussion has been going on about the possible development of a simple instrument for checking the bottom hole pump before it is withdrawn from the well, but little action has been taken. Since operation and maintenance of equipment on pumping wells has always been considered the function of the field man, the instrument should be one that will lend itself to use by the field man. Therefore, it must be low in cost and easily understood so it can be properly utilized. A new instrument has been developed which has been designated as a polished rod Load indicator. The name is appropriate since it does indicate the changing loads on the polished rod as the well pumps.