Amongst the challenges encountered during infill drilling and completion is the requirement to penetrate depleted zones drained during the early phases of the field development. This condition is exacerbated for completions requiring openhole gravel pack as the maximum openhole lengths are traditionally limited by the effective circulating density experienced during the openhole drilling and gravel packing. This paper discusses the techniques implemented in four openhole gravel pack completions with openhole lengths up to 858m marking a new record for the longest openhole completed by PTTEP in this field. The wells were deployed by PTTEP in the Malaysian Deepwater Block K, during the field development of Siakap North Petai Phase 2, executed between Q4 2021 and Q1 2022.

As fields mature, the drilling and completion design and execution for infill development becomes challenging. In a deepwater environment, one of the strategies to address this challenge is to optimize subsea facilities by targeting several reservoir packages in a single wellbore. However, this technique comes with technical challenges because penetrating different zones requires active reservoir management, an allowance for zonal isolation, and an adequate response to potential crossflow. A smart completion architecture should overcome these constraints and reduce overall capital expenditure while maximizing production. Furthermore, for wells requiring sand control, the completion solution must ensure a reliable and proven approach that minimizes the potential completion failures introduced by unsuccessful sand retention. This paper presents the completion strategy implemented in an intelligent well completed in the Malaysian deepwater Block K, during the field development of Siakap North Petai (SNP) Phase 2 and executed in Q1 2022.

Designing and delivering a successful completion in a Subsea High Rate Gas Deepwater environment is known to be one of the most challenging aspects of a Field Development. For the specific case of high rate gas wells with reservoirs requiring sand control, it makes the completion reliability and longevity an uncompromising prerequisite, as it is well known that formation solids moving at high velocity through the wellbore can drastically affect the functionality and integrity of downhole equipment as well as the subsurface and production facilities. In addition, to the previously mentioned aspects, the complexities and costs associated with Well reentries and Workovers in a Subsea Deepwater environment can quickly erode the overall financial viability of a development program. This paper covers the sand control design and execution techniques applied to four (4) High Rate Gas Wells in the PTTEP's Block H Development in the Malaysian Deepwater region of Sabah, between 2020 and 2021.