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UPT Publikasi Ilmiah, Universitas Islam Bandung. Jl. Tamansari No. 20, Bandung 40116, Indonesia, Tlp +62 22 420 3368, +62 22 426 3895 ext. 6891
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Bandung Conference Series: Mining Engineering
Published by Universitas Islam Bandung
ISSN : -     EISSN : 28282140     DOI : https://doi.org/10.29313/bcsme.v2i2
Core Subject : Science, Engineering,
Control & Systems Engineering Energy Engineering Materials Science & Nanotechnology
Bandung Conference Series: Mining Engineering (BCSME) menerbitkan artikel penelitian akademik tentang kajian teoritis dan terapan serta berfokus pada Teknik Pertambangan dengan ruang lingkup Analisis sensitivitas Net Present Value (NPV), Anggaran Biaya Crushing Plant, API 5L Grade B, Belt Conveyor, BESR II, Crude Oil, Crushing plant, Dimensi Paritan, Discounted Cash Flow (DCF), Dump Truck, Economic SR, Efisiensi Kerja Cassiterite, Gas, Korosi, Hopper, Internal Rate of Return (IRR), Kapasitas Sump Jalan Angkut, Lifetime Biaya Produksi, Loosematerials, Payback Periode (PBP), Pemompaan, Peringkat Batubara, Pipa Baja Karbon, Crude Oil, Pipa Baja, Pipa Transportasi, Pit Design BWE, Productin Rate Index Crushing Plant, Produktivitas Debit Air, Rencana Reklamasi, Roller, Sisa Umur Pakai Pipa Baja Karbon, Sisa Umur Pakai Pipa Reflektan Vitrinit, Sisa Umur Pakai, Sistem Dewatering, Target Ban, KPH, TUR, Variable Crushing Plan. Prosiding ini diterbitkan oleh UPT Publikasi Unisba. Artikel yang dikirimkan ke prosiding ini akan diproses secara online dan menggunakan double blind review minimal oleh dua orang mitra bebestari.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 1 Documents
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Search results for , issue "177 - 186" : 1 Documents clear
Evaluasi Tekanan Hidrostatik, ECD, BHCP, dan Tekanan Rekah Formasi sebagai Faktor Loss Circulation pada Sumur X Pad B Sukowati field Jawa Timur Bima Rizaldy; Yunus Ashari; Dono Guntoro
Bandung Conference Series: Mining Engineering 177 - 186
Publisher : UNISBA Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29313/bcsme.v6i2.25676

Abstract

Abstract. This study evaluates hydrostatic pressure, equivalent circulating density (ECD), bottom hole circulating pressure (BHCP), and fracture pressure as controlling factors of lost circulation in Well X Pad B. The study used a quantitative descriptive method based on secondary drilling data, including mud log, mud weight, flowrate, rheology, well geometry, leak-off test information, and lithology. Pressure parameters were calculated along true vertical depth and interpreted using the drilling window concept. The results show that the well was generally drilled under overbalanced conditions; however, the margin between ECD/BHCP and fracture pressure became narrower in the deeper interval, particularly around 5,400-6,600 ftTVD. The critical interval is dominated by limestone and carbonate lithology interpreted as porous, fractured, vuggy, or brittle. Under this condition, annular pressure loss during circulation increases ECD and BHCP, allowing mud to enter fractures or secondary pores. The recommended control is to increase mud weight gradually to 14 ppg, reduce flowrate in critical intervals, and apply selective lost circulation material.   Abstrak. Penelitian ini mengevaluasi tekanan hidrostatik, equivalent circulating density (ECD), bottom hole circulating pressure (BHCP), dan tekanan rekah formasi sebagai faktor pengendali kejadian loss circulation pada Sumur X Pad B. Metode yang digunakan adalah deskriptif kuantitatif berdasarkan data sekunder pengeboran, meliputi mud log, mud weight, flowrate, reologi lumpur, geometri sumur, data leak-off test, dan litologi. Parameter tekanan dihitung terhadap true vertical depth dan dianalisis menggunakan konsep drilling window. Hasil penelitian menunjukkan bahwa sumur secara umum berada dalam kondisi overbalance, tetapi margin antara ECD/BHCP terhadap tekanan rekah semakin menyempit pada interval bawah, terutama sekitar 5.400-6.600 ftTVD. Interval kritis tersebut didominasi litologi limestone dan karbonat yang ditafsirkan berpori, berekahan, vuggy, atau brittle. Pada kondisi tersebut, rugi tekanan annulus saat sirkulasi menaikkan ECD dan BHCP sehingga lumpur lebih mudah masuk ke rekahan atau pori sekunder. Pengendalian direkomendasikan melalui kenaikan mud weight bertahap menjadi 14 ppg, penurunan flowrate pada interval kritis, dan penggunaan lost circulation material secara selektif.

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