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All Journal Journal of Earth Energy Science, Engineering, and Technology Scientific Contributions Oil and Gas
Astra Agus Pramana
Universitas Pertamina
Chemical Engineering, Chemistry & Bioengineering Energy

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Steam-Propane Injection Simulation for Heavy Oil Astra Agus Pramana; M. Ilham Ramdhani
Journal of Earth Energy Science, Engineering, and Technology Vol. 5 No. 1 (2022): JEESET VOL. 5 NO. 1 2022
Publisher : Penerbitan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (605.837 KB) | DOI: 10.25105/jeeset.v5i1.9461

Abstract

This research is about Steam-Propane Injection Simulation for Heavy Oil with the aim of simulating steam-propane EOR to increase oil recovery, then knowing the effect of different injection rates and being able to describe the best scenario of each different injection. The method used is reservoir modeling using CMG STARS software. The results show that for production that only relies on natural depletion (primary recovery) for 10 years of production, only 7% recovery from OOIP is obtained and when steam-propane injection is added, oil recovery is 60-70%. For the use of different injection rates, it is known that the higher the injection rate, the faster it will reach peak production and an increase in oil recovery. The best recovery method in this case is scenario case 4 with steam-propane injection with horizontal production wells. The advantage of using additional propane injection is to accelerate peak production and increase the recovery factor.
Introducing Cork As An Alternative Insulator to Polyurethane in Field X Production Pipelines: A Simulation Study Astra Agus Pramana; Adhikara Paramayoga; Utami Farahdibah; M. Kurniawan
Scientific Contributions Oil and Gas Vol 48 No 3 (2025)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v48i3.1871

Abstract

Wax deposition is a major flow assurance challenge in hydrocarbon production systems, as paraffinic components tend to precipitate when the temperature of the flowing fluid drops below the Wax Appearance Temperature (WAT). One of the most practical mitigation strategies is to maintain the fluid temperature above WAT by using thermal insulation along the production pipeline. This study investigates the effectiveness of insulation in reducing wax deposition and compares the performance of two insulation materials—cork and polyurethane—when applied to production pipelines. Fluid characterization was performed using Multiflash PVT Modeling & Flow Assurance software, while dynamic multiphase flow simulations were conducted to evaluate temperature distribution, wax layer growth, and heat retention within the pipeline system. The results show that both materials effectively reduce heat loss and delay wax formation; however, cork insulation provides comparable thermal performance to polyurethane while offering environmental and economic advantages due to its natural composition and sustainability. Overall, this study highlights cork as a promising alternative insulation material for wax deposition control, combining efficient thermal retention with eco-friendly characteristics.
Investigation of Insulation Effect on Wax Deposition Using a Flow Assurance Simulator Astra Agus Pramana; Inggrialianthari Rezkhi Trinugrahandini
Scientific Contributions Oil and Gas Vol 49 No 2 (2026)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v49i2.2104

Abstract

Wax deposition remains one of the most common and disruptive problems in oil and gas pipelines. To address this issue, various methods are developed for both onshore and offshore fields according to their field characteristics. Insulation is one of the mitigation methods that generally performs well, despite several implementation challenges. This study presents a wax-deposition model to assess the effectiveness of insulation as a mitigation method. The analyzed fluid flows from the MOON platform to the SELENA platform in Field W through a carbon-steel subsea pipeline. The pipeline is modeled over a simulated distance of approximately 0–1,900 m, with detailed wax-deposition analysis focused on the critical section of 0–700 m. Rubber and concrete are applied to evaluate their performance as pipeline insulation materials. This study uses five scenarios with two different materials. The results show that, in all cases, wax thickness reduction reaches 100%, while rubber insulation performs more effectively than concrete in reducing temperature decline and heat loss. In addition, other parameters, such as pressure, Wax Appearance Temperature (WAT), and flow rate, are analyzed in this study.
Co-Authors Adhikara Paramayoga Inggrialianthari Rezkhi Trinugrahandini M. Ilham Ramdhani M. Kurniawan Utami Farahdibah