Publications

PT Pertamina EP Field Sangasanga is committed to completing the work program that is launched every year. It is expected to support the 2020 production target of 5380 BOPD as written in the 2020 Work Program. One of the efforts to increase the production rate of Field Sangasanga is to do Well Service Maintenance (WSM). Data of different failures during performing WSM work are collected. The frequency of breakdowns and size of loss were identified and analyzed employing quality improvement tools are; Pareto and Fishbone Diagram. Results indicate that tubing leaks cause 51.6% of the potential loss. Tubing often leaks because the wall thickness is less than the minimum. Root-cause-analysis highlights that most failure in the tubing is caused by the existing inspection tool cannot check the entire thickness of the tubing surface. Leaky tubing leads to many problems, such as increased work time, operational costs, and loss of production. We developed an inspection robot named Thicktube, which uses simple Arduino programming, equipped with a VL53L0X proximity sensor for measurement, SMS feature, and micro-SD feature. The Thicktube is fitted with a motor speed of 0.36 m/s driven by a battery remote control. With three sensor angles, Thicktube is designed to measure the thickness of the tubing as much as 27 points on one joint dimension along 9 meters. The test to compare the result is measured using Thicktube and Ultrasonic Thickness. Thicktube has a measurement accuracy of 82% with a measurement resolution of 1 mm. Thicktube as a preliminary tubing inspection can reduce the incidence of downtime due to leaky tubing. By applying Thicktube tools, a company can save up to Rp. 3.1 billion. In addition, the potential hazards of pulling out the tubing can be avoided.