Economic and Operational Perspective of Rigless Offshore Well Services Using Scaffolding Pipes Structure in TBA Field, JOB Pertamina PetroChina Salawati

Authors

  • Al Hafeez JOB Pertamina - PetroChina Salawati
  • Rezi Quraishi JOB Pertamina - PetroChina Salawati
  • Munajat Mubaraq JOB Pertamina - PetroChina Salawati
  • Andri Yogaswara JOB Pertamina - PetroChina Salawati

Abstract

The inevitable marginal phase of offshore TBA field production was forthcoming while daily basis of producing it by using the artificial gas lift. The source for the gas lift was the associated gas, produced from the insitu wells. Making up the Gas Compressor Unit need an additional gas source due to the limited, as well as declining existing associated gas supply. The top layer of  unproduced reservoir was the prime candidate to be perforated to increase the gas supply.

Several problems either in economic or operational area were mapped and classified. Considering the utilization of offshore rig and/or its alernative, the factor of limited space deck on tripod platform was the main concerned as well. An economic analysis decided that the offshore scaffolding pipes structure (Rigless) become the only option to complete the job with respect of  operational feasibility and budgeting. This scheme will support the static lifting equipment to R/U all units and running all devices at the platform during well service activities such as perforation, bottom hole pressure survey and gas lift valve replacement.

Accomplishment by using this offshore scaffolding pipes structure (Rigless) with the steps procedure of installation and dismantle will be discussed in this paper. It was expected that the successful operational and low cost budget by using the offshore scaffolding for this subject will be a new breakthrough to make efficiency in the oil and gas industry. 

Published

30-05-2023

Issue

Section

Articles