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All Journal Journal of Petroleum and Geothermal Technology Scientific Contributions Oil and Gas
Jati, Dhika Permana
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Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Energy Engineering

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EVALUATING CUTTING TRANSPORT ON 12 ¼” SECTION WELL TM-1 Widyaningsih, Ratna; Idea, Kharisma; Utami, Ayu; Putradianto, Ristiyan Ragil; Jati, Dhika Permana; Dzulfiansyah, Pratama; Hartoyo, Puji
Journal of Petroleum and Geothermal Technology Vol. 5 No. 1 (2024): May
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jpgt.v5i1.10742

Abstract

Mud hydraulics on a 12-1/4" section needs to be planned properly. Mud hydraulics design on a 12-1/4" section includes determining mud density, flow type, pressure loss, pump specifications, bit hydraulics and cutting lifting design. The purpose of bit hydraulics design is to determine the optimum flow rate. Mud hydraulics optimization is carried out using methods the Bit Hydraulic Horse Power (BHHP), Bit Hydraulic Impact (BHI) and Jet Velocity (JV) methods, where the analysis is in the form of graphs. The graph is analyzed by using a trial and error method to obtain the recommended flow rate so as to provide good cutting lifting. where the expected recommendation analysis are Cutting Transport Ratio (Ft) > 90%, Cutting Concentration (Ca) < 5%, and Carrying Capacity Index (CCI) > 1. The analysis results from the graph show that for the hole 12-1/4", it is recommended to use an optimum flow rate of 626.6 gpm with minimum value of Ft is 90.01%, Ca is 0.87% and CCI is 1.95. These values are stated to be good by using 15-15-16 nozzle bit combination. The Flowrate value can be increased up to 785 gpm by using 18-18-20 nozzle bit combination.. Keywords: Hydraulic Mud Planning, Optimum Flow Rate, Cuttings Removal.
Polymer-Oxygen Scavenger for Oil Recovery in Sandstone Jati, Dhika Permana; Hetharia, Putri Diantha; Damayandri, Dadan; Widyaningsih, Ratna; Kaesti, Edgie Yuda; Taufantri, Yudha; Putra, Ilham Ardatul
Scientific Contributions Oil and Gas Vol 49 No 1 (2026)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v49i1.1854

Abstract

Polymer degradation caused by dissolved oxygen remains a major challenge in Enhanced Oil Recovery (EOR) for sandstone reservoirs, especially under moderate salinity (18,000 ppm) and temperature (60°C) conditions, which accelerate viscosity loss. While HPAM polymers are highly effective, ensuring their long-term stability requires strategies that preserve molecular integrity throughout the injection process. This study employs laboratory experiments to assess two HPAM variants (FP 3630 and FP 3230), both in conventional formulations and with an oxygen scavenger (NaHSO₃), using Bentheimer synthetic cores. Evaluations cover fluid-to-fluid (compatibility, rheology, filtration, thermal stability) and fluid-to-rock (injectivity, core flooding) performance under reservoir conditions. Results identify FP 3630 at 1400 ppm with 0.1% NaHSO₃ as the optimal formulation. The oxygen scavenger significantly improves thermal stability and reduces viscosity degradation from 32.83% to 4.24%. This formulation achieves an ideal Resistance Factor (11.44) and causes minimal formation damage (RRF 1.01), while enhancing the Recovery Factor from 67.38% to 87.29%. These findings confirm that the incorporation of oxygen scavengers effectively minimizes polymer degradation and establishes them as a crucial component for the successful implementation of EOR in moderate-salinity sandstone reservoirs.
Co-Authors Ayu Utami, Ayu Damayandri, Dadan Dzulfiansyah, Pratama Edgie Yuda Kaesti Hartoyo, Puji Hetharia, Putri Diantha Idea, Kharisma Putra, Ilham Ardatul Putradianto, Ristiyan Ragil Widyaningsih, Ratna Yudha Taufantri, Yudha