(36) PARAFFIN INTERVENTION-CASE HISTORY, PRACTICES, PRODEDURES, AND ECONOMICS
Treating for paraffin in rod pumped wells is a critical operating cost driver that needs continuing attention. While there are various prevention chemicals, operators still need periodic removal interventions. This paper will summarize prior investigations regarding the removal of paraffin and provide a case history that illustrates the issues.
In addition, this paper will discuss the economic considerations related to common paraffin removal processes. The economic considerations will include the direct costs as well as the indirect, hidden costs. In general, paraffin removal in rod pumped wells by annular hot oiling has severe depth limitations that require periodic, supplemental treatments. The economic benefits and trade-offs are largely dependent on the depth of paraffin deposition, the type of paraffin, and the wellbore configuration.