Publications

The PECIKO gas field is situated offshore East Kalimantan - Indonesia and is a major contributor to the gas production of the region. Its phased development, scheduled between 1999 and 2008, is based on 7 wellhead production platforms, representing 100 wells (standard and splitter wells). Currently, 58 wells are in production on the 6 different platforms already installed.2 Jack-up rigs are permanently assigned to the development of the field and Drilling " Production Simultaneous Operations (SIMOPS) is the common rule. The Drilling department is made Responsible for Safety and Environment on Site (RSES), in a 500 m radius zone around the rig, via the drilling supervisor who is officially appointed RSES by the top management of the subsidiary. Therefore, he looks after the HSE aspects and possible interferences of all operations occurring in this 500m radius zone, with the support of the drilling teams based onshore. The first part of this paper will describe the specific measures implemented as standard procedures to reduce the production shut-downs while drilling with a jack-up rig on a production platform. In particular, the concurrent drilling, production and well servicing (perforations, clean-up ... ) activities will be discussed through illustrated examples of both improvements and drawbacks. The second part of the paper will cover the specific case when a heavy construction program (commissioning of new platforms and their connection to the production network via new export lines) had to be conducted simultaneously with the "usual" SIMOPS described in the first part of the paper. In particular, the different phases will be reviewed: Coordination between the different entities (operators technical departments, drilling contractors, construction barges contractors) involved under the leadership of the Drilling department; Systematic detailed Hazards Identification / Risks Assessment (HIRA); On-site dissemination of the information and clarification of supervision lines. The conclusion will insist on the positive financial impact of a well prepared SIMOPS campaign (evaluated in millions of dollars) but also on the HSE aspects thanks to a better evaluated risk (no recordable injury nor major material or environmental incident occurred).