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All Journal PROSIDING SEMINAR NASIONAL CENDEKIAWAN Petro : Jurnal Ilmiah Teknik Perminyakan Journal of Earth Energy Science, Engineering, and Technology
bambang Kustono
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Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering

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Evaluasi Kegiatan Pengasaman Matriks Pada Sumur A Di Lapangan Panas Bumi SG Bambang Kustono; Widya Yanti
PETRO:Jurnal Ilmiah Teknik Perminyakan Vol. 2 No. 2 (2015)
Publisher : Jurusan Teknik Perminyakan Fakultas Teknologi Kebumian dan Energi Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/petro.v2i2.296

Abstract

Pada lapangan panas bumi, terutama yang berjenis dominasi air, salah satu permasalahan yang cukup sering dihadapi adalah berkurangnya produktivitas sumur akibat terjadinya scaling atau jenis kerusakan formasi lainnya. Untuk mengatasi permasalahan kerusakan formasi, umumnya dilakukan metode-metode stimulasi reservoir pada lapangan. Salah satu metode stimulasi reservoir yang cukup sering digunakan pada lapangan panas bumi untuk memperbaiki produktivitas sumur adalah pengasaman matriks.Pengasaman matriks dilakukan pada sumur “A” dikarenakan nilai II (Injectivity Index) sumur yang jauh lebih rendah daripada II sumur-sumur di sekitarnya. Kondisi ini menunjukkan keberadaan konten penyebab kerusakan formasi pada lubang sumur. Berdasarkan hasil analisa profil tekanan dan temperatur, diputuskan untuk melakukan pengasaman matriks pada dua buah feedzone di sumur “A”.Evaluasi kinerja pengasaman matriks dilakukan menggunakan analisa deliverability curve untuk menghitung nilai perolehan uap serta MDP sumur. Program asam yang paling layak untuk dilakukan berdasarkan analisa deliverability curve adalah program asam 120 gal/ft (9% HF). Program asam ini dapat meghasilkan perolehan uap sebesar 92 kph dan nilai MDP sebesar 147.2 psi. Berdasarkan evaluasi keekonomian, program asam ini juga menghasilkan nilai ekonomis yang paling baik sehingga dipilih sebagai program asam yang paling tepat untuk digunakan.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (285.627 KB) | DOI: 10.25105/jeeset.v1i1.3033

Abstract

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (516.452 KB) | DOI: 10.25105/jeeset.v1i2.3945

Abstract

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.
Co-Authors Ababil Rao Akbar Apriyansah Toni Astra Agus Pramana Fahmi Ramdhan Haryo Pranoto Guno Ilham Narendrodhipo Insyira Nur Indriana Kris Pudyastuti Muhammad Bima Furqan Onnie Ridaliani Pauhesti Rusdi Puri Wijayanti Raka Aditya Pratama Riviani Kusumawardani Sri Feny Sugiatmo Kasmungin Syamsul Irham Widya Yanti