Publications

Pertamina Hulu Energi - Offshore North West Java (PHE -ONWJ) field has been operating for more than 45 years, located in offshore north of West Java Island with an area of 8,300 km2. Traffic around PHE-ONWJ field has increased significantly compared to the initial stage. It is important to note that ONWJ field area is close to Jakarta. As the level of activity increases, risks to all PHE-ONWJ subsea pipelines increase as well. One of the threats that arise is pipeline dent due to third party activity such as anchor drop/drag from vessels/ships sailing across subsea pipeline. An example is the 14” MOL EPRO – NGLJ pipeline which was built in 1983 (has been operating for 38 years). On September 4, 2008, an Inline Inspection campaign was conducted to check pipeline integrity. Before launching the MFL pig, a calliper pig was deployed to check the pipeline geometry for a safe minimum passage for MFL tool run. Unfortunately, after calliper data was downloaded, an 18.2% geometry anomaly was found (ID pipe=10.63 in) categorized as the highest dent at a log distance of 14,282 m from EPRO which did not allow the MFL to run. Due to age, geometrical and operating fluid conditions, the Company was urged to obtain more comprehensive data of the pipeline’s remaining wall despite the dent. Therefore in 2018, ONWJ engaged 3P to utilize their MFL tool capable of adjusting pipeline’s dent. After several tests such as pull through on an artificial dented spool had been successfully done, finally the tool was sent to Indonesia and was successfully run through the dent pipeline 14in MOL EPRO-NGLJ safely.