Haider, Bader Y.A. (Kuwait Oil Company) | Rachapudi, Rama Rao Venkata Subba (Kuwait Oil Company) | Al-Yahya, Mohammad (Kuwait Oil Company) | Al-Mutairi, Talal (Kuwait Oil Company) | Al Deyain, Khaled Waleed (Kuwait Oil Company)
Production from Artificially lifted (ESP) well depends on the performance of ESP and reservoir inflow. Realtime monitoring of ESP performance and reservoir productivity is essential for production optimization and this in turn will help in improving the ESP run life. Realtime Workflow was developed to track the ESP performance and well productivity using Realtime ESP sensor data. This workflow was automated by using real time data server and results were made available through Desk top application.
Realtime ESP performance information was used in regular well reviews to identify the problems with ESP performance, to investigate the opportunity for increasing the production. Further ESP real time data combined with well model analysis was used in addressing well problems.
This paper describes about the workflow design, automation and real field case implementation of optimization decisions. Ultimately, this workflow helped in extending the ESP run life and created a well performance monitoring system that eliminated the manual maintenance of the data .In Future, this workflow will be part of full field Digital oil field implementation.
ABSTRACT Anytime sucker rods contact the inner diameter of production tubing in corrosive wells, wear accelerated corrosion will result. The resultant damage is likely to be greater than the sum of the two factors acting individually. Experience tends to agree that minimizing the corrosion component with corrosion inhibitors minimizes the damage, and that continuous application of the inhibitor is more beneficial than batch application. This paper follows laboratory development and field testing of a batch applied corrosion inhibitor designed to have added benefit for this task. In the laboratory linear polarization resistance evaluated inhibition and standard lubricity tests evaluated wear characteristics. Corrosion coupons, manganese ion in the water from this sour field, and failure records evaluated field performance. Coupons detect the corrosion component, and manganese ions reflect total corrosion-plus-wear occurring in the well. The ratio of these to measurements before and after application evaluated success prior to any failures occurring. INTRODUCTION Exact details of the mechanism of wear accelerated corrosion are certain to be quite complex. 1 Just wear itself and lubrication are complex enough. 2, 3 Electrochemical corrosion due to dissolved gases and volatile organic acids in the oilfield has been the subject of many studies. 4 Many times an active wear area in a corrosive media becomes anodic to the film area, giving rise to galvanic corrosion acceleration. 5, 6 Mechanistic similarities probably exist for erosion accelerated corrosion. 7, 8 Rather that explain all the facets of the mechanism, this paper outlines attempts to minimize wear accelerated corrosion with corrosion inhibitors. Earlier studies have shown that this effort can provide benefits. 9, 10 The reason that sucker rod strings sometimes contact the inner diameter of production tubing can be due to crooked zones in the hole, or to intentionally deviated holes.