Frac Pack Completions - Continuous Innovation Via Screenless Frac pack for Robust Sand Control and Improved Economics for Infill Drilling Projects Offshore Peninsular Malaysia

Abstract

Abstract Frac pack has been implemented in brown field development in field D to improve both sand fines control effectiveness and productivity over previous conventional gravel pack completions. Marginal reserve in volatile economic situation required further innovation or approaches to improve project economics. To reduce well completion costs, screenless frac-pack was introduced recently which has improved project economics while testing robustness and longevity of such a completion. This paper focuses on the improvement efforts, design fine-tuning, experiences gained, valuable lessons learned, and the best practices. One of the challenges with conventional gravel pack completion is the high completion cost and potential screen- plugging time. Screenless frac-pack eliminates the use of costly downhole sand screen, packer assemblies and subsequent RIH cost. The main frac-pack treatment utilized tip screen out method to create short fracture length and wide fracture width to maximize fracture conductivity. Resin coated proppant (RCP) was used to prevent proppant flowback during production. The job was successfully executed and well brought online in 2022 which continues to produce with good productivity and no proppant flowback observed. Success criteria for this application is driven by two elements; first one is the ability to keep the proppant in fracture without flow-back during production life and the second one to meet the expected target production rate without production impairment. Post-treatment production results met both the criteria and based on this success of the first trial of the screenless frac-pack technology, its replication is being planned in more wells. Further reduction in well cost is also expected by applying the same frac design concept in monobore wells by creating more value from upcoming infill drilling projects and to improve economics of the multiple marginal reserve developments. Apart from that, there are learnings and concerns that we will highlight in this paper for future considerations during the replication of this design.