More Cost Effective Highly Paraffinic Oils Treatment Using The Better New Formulated Paraffin Solvent

Abstract

Precipitation and deposition of solids in highly paraffinic oil wells have been recognized to be a significant problem in oil production and facilities in Langgak field. These paraffin deposits can occur in tubing, flowline, or in the pore of the reservoir rock, especially near wellbore area, and effectively choke the flow of hydrocarbons. The result is a decrease or even cessation of production unless some remedial action is taken on periodic basis.

The primary cause of paraffin deposition is simply a loss in solubility in the crude oil. This loss of solubility is usually a result of changes in temperature, pressure, or composition of the crude oil as a result of dissolved gasses. Therefore, among the various common methods to solve paraffin accumulations, solvents are considered the best for dealing with it. Paraffin solvent (parasol) have been largely used in Langgak field and successfully overcome our problems.

A new formulated solvent with density higher than water, “Heavy Parasol”, was introduced and tested. This solvent offers better ability, in term of solubilization capability, and increase operational efficiency, in term of cost and time. Through the new treatment, the flow of hydrocarbons to the wellbore can be restored and improved, and the cost to run the treatment can be minimized. Better result at lower cost.

This paper will explain the process in treatment, and also compare the benefits and easiness associated with the application of Heavy Parasol. Case study and lab test data will be presented to compare the performance and economics of both paraffin solvents used in Langgak field.