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All Journal PROSIDING SEMINAR NASIONAL CENDEKIAWAN Petro : Jurnal Ilmiah Teknik Perminyakan Journal of Earth Energy Science, Engineering, and Technology LEMBARAN PUBLIKASI MINYAK DAN GAS BUMI

Astra Agus Pramana

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Author-ID : 3201655

Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science

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Engineered Fiber Based Lost Circulation Pill to Abridge Lost Circulation of Geothermal Well Apriyansah Toni; Astra Agus Pramana; Bambang Kustono
Journal of Earth Energy Science, Engineering, and Technology Vol. 1 No. 1 (2018): JEESET-VOL.1-NO.1-2018
Publisher : Penerbitan Universitas Trisakti

Loss circulation is a major problem and known as the biggest challenge during drilling and well construction.This can leadsto various consequences,such as stuck pipe, loss of material and time to combat the losses, and even losing the well itself. Severe loss circulation conditions are often met while drilling geothermal wells in Indonesia. Partial to total losses have start experienced since drilling the surface section. Cement plugs is one of the conventional methods to cure losses. Number of cement plugs differ from one well to another well. Even in some wells, number of cement plugs performed for loss circulation plug can be over 30 times with total of more than 4,000 barrels of cement slurry pumped. Solution other than basic loss circulation material and cement plug must be developed to optimize curing loss time. Engineered fiber base concentration which is include; Base Fluid, LCM and Solid Package was obtained from simulation, then trial and error in laboratory was conducted. Based on the final recipe, the control pill was able to hold pressure and not leaking, even when using 5 mm grid clearance. Additional combined stiff fiber and flexible fiber with concentration of 6 lbs/bbl sufficient to hold exessive loss circulation.

Aerated Drilling Optimization in Geothermal Well Drilling in Field “X” Cluster “Y” Raka Aditya Pratama; Astra Agus Pramana; Bambang Kustono
Journal of Earth Energy Science, Engineering, and Technology Vol. 1 No. 2 (2018): JEESET-VOL.1-NO.2-2018
Publisher : Penerbitan Universitas Trisakti

Aiming for productive fault in Suban Agung Rim, Field X Cluster Y Bengkulu Province, Indonesia, PT Pertamina Geothermal Energy (PGE) drilled some wells to discover the potential awaited. However there are challenge awaits each meter ahead especially in reservoir sections where loss circulation is expected. Knowing the risk, PGE decided to drill the well utilizing aerated drilling. The method has known for decades to be the most effective approach in dealing loss circulation. The method applies certain value of compressed air to be injected in fluid stream, so bubbling process can be achieved in order to reduce the mud weight. The method has benefit to maintain ROP and minimize the risk for pipe get stuck due to poor hole cleaning in fractured formation. There are three wells drilled in Field X Cluster Y which has the same problem in 9-7/8” section; all experienced stuck pipe while drilling. During the process aerated drilling was utilized, however it was not sufficient. This paper will discuss and explain on how the occurrence happened and what to do next in similar condition to avoid the problems.

Simulation Study of Hot Waterflood and WASP Injection Post Mature Steamflood Ludovika Jannoke; Iwan Setya Budi; Astra Agus Pramana
Journal of Earth Energy Science, Engineering, and Technology Vol. 3 No. 2 (2020): JEESET VOL. 3 NO. 2 2020
Publisher : Penerbitan Universitas Trisakti

Steamflood is the most successful thermal EOR applied throughout the world and have produced the biggest portion of oil from EOR methods. As high intensity energy and associated cost are put to produce oil, optimization in any level can have tremendous impacts. Optimization in steamflood operation can be achieved by optimizing steam injection (rate, time), especially in mature pattern/ field or nearing the end of field life/ abandonment. This objective can be done thru utilization of retained heat in the reservoir and overburden/ underburden as they are not instantaneously produced with fluids. By using reservoir simulation, it can be shown that injection is not necessary to be continue until abandonment but can be stopped at a much earlier time hence a much profitable steamflood operation can be achieved.

Co-Authors Apriyansah Toni bambang Kustono Iwan Setya Budi Ludovika Jannoke Raka Aditya Pratama Ridho Akbar Szafdarian Sugiatmo Kasmungin Vaya Candida Putra Yusuf Revy Fadillah

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