Delivering Well in an Economical Way for Marginal Field by Maximizing Co-Activity Operation and Mastering Drilling Practices in Swamp Drilling Operation

Abstract

Limited remaining reserves is one of the challenges that is usually faced in mature field development. Swamp fields in Mahakam block are the examples in which field development become more marginal. Delivering wells more economically is one of the key points to survive infrom those conditions. Rig operation which haswith a significant daily expenditure could be a way for  improvement is one of the windows that can be improved to yielddeliver economic wells.

In general, efficient rig operation will deliver well in a shorter duration and more economically. Two aspects can be improved to deliver well in shorter duration such as performing co-activity operation to shorten the horizontal time (preparation time) and mastering drilling practices to shorten the vertical time (drilling time). In co-activity operations aspect, swamp drilling team has successfully implemented various initiatives such as more rigless operations, batch drilling, offline activities, and other initiatives.
While in drilling practices aspect, swamp drilling team have also successfully implemented enhance drilling parameter  enhancement, high bit HSI, bit best selection, fast string connection, and team motivation to reduce the duration and well cost.

Implementing massive co-activity operations and best practices have demonstrated a significant time saving of 24% for Shallow Light Architecture (SLA) well and 27% for Extended Light Architecture (ELA) well. Those practices have also make a new record of fastest well completion in 2.17 days and highest drilling ROP for 141 m/hr with drilling 2303 m in the first 24 hrs that was recorded as the world best performance of Rotary Steerable System (RSS) BHA as per DD Company worldwide record. As a result, the 2020 average cost of SLA well wais 2.6 MUSD while ELA well wais 4.1 MUSD.

Those massive co-activity operations and drilling practices have been successfully implemented since 2019 without any safety incident and related Non-Productive Time (NPT). This positive result leads us to deliver more wells for future development in swamp fields asset.