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All Journal Petro : Jurnal Ilmiah Teknik Perminyakan
Saputra, Novan Ade
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Earth & Planetary Sciences Economics, Econometrics & Finance Energy Engineering

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FRACTURING LIQUID DESIGN AND ECONOMIC ANALYSIS FOR LOW PERMEABILITY AND HIGH TEMPERATURE Saputra, Novan Ade
Petro : Jurnal Ilmiah Teknik Perminyakan Vol. 12 No. 4 (2023): DESEMBER
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.v12i4.18416

Abstract

Mirabelle 01 M01 well is a developed-stage well which has undergone drilling since February 2020 until May 3th 2020. It has 13000 ft depth and dominated with sandstone layers and some shaly inserts. This well is a high temperature (300 F), low permeability (0.5-5 mD) and porosity well which casues hydraulic fracturing should be done in this well. Aim: to carry out fluid fracturing design analysis by considering additional materials and economics. The perforation in this well divided into 2 perforations, first perforation has been 297 ft long and located at 12143 ft-12440 ft of well depth. The second perforation has been 45 ft in length and is located at 12,730 ft-12,685 ft of well depth. Payzone of this well is dominated by sandstone which is determined from the low gamma ray data. This Mirabelle 01 M01 well has high resistivity due to the resistivity log. Water mix used for the formation is a neutral water mix but still has several negative ions with corrosive properties such as SO42- and Cl-. Acid inhibitors are needed to remove these ions and prevent corrosive to be happened. Scale inhibitors are also needed to be added to prevent scale formation caused by Mg2+ ions which are contained in the mix water. From the average pressure calculation, the closure pressure was found about 7914.67 psi. The young modulus found from 8-10 Mpsi which indicates that the formation has high stiffness. The base of the fracturing fluid used is low price water-base fluid with guar gum polymer which can produce hydroxypropilguar (HPG) that don't ruin the formation even if the formation is in the high temperature. Borate ions are used to be crosslinker agents that binds metal ions with polymers. To split polymers molecules, sodium salt from the peroxydisulphate is used to be the gel breaker.
ANALISIS CASING DESIGN DENGAN MEMPERHITUNGKAN SISA UMUR CASING CARBON STEEL DAN MATERIAL SELECTION BERDASARKAN CORROSION RATE PADA SUMUR Z Saputra, Novan Ade
Petro : Jurnal Ilmiah Teknik Perminyakan Vol. 13 No. 1 (2024): Maret 2024
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.v13i1.19619

Abstract

Penelitian ini membahas tentang hasil casing setting depth dan casing design dengan mempertimbangkan kondisi geologis bawah permukaan dan corrosion rate pada casing carbon steel pada Sumur Z dimana berdasarkan data histroris terdapat beberapa sumur pada lapangan YZ yang telah di shut in karena diprediksi adanya leak pada casing di bawah packer akibat adanya korosi. Perhitungan corrosion rate dilakukan untuk mengetahui apakah umur sumur dapat mencapai tahun target produksi atau tidak terutama pada production liner, karena sumur berada pada kondisi lingkungan dengan kadar sebesar 28% dan sebesar 0,002%. Dengan menggunakan metode Norsok M-506 dan menggunakan casing grade L-80 29 ppf berukuran 7 in (OD) dan 6,184 in (ID) didapatkan nilai corrosion rate yaitu sebesar 0,602 mm/yr. Hal ini dapat diartikan bahwa casing akan leak sebelum tahun target produksi yaitu 21 tahun. Oleh karena itu, dilakukan pemilihan ulang casing pada production liner agar casing tidak leak sebelum tahun target produksi. Dengan mempertimbangkan beberapa faktor, penentuan casing setting depth telah ditentukan yaitu surface casing dipasang sampai kedalaman 2500 ft, production casing dipasang sampai kedalaman 4450 ft, dan production liner dipasang dari 4100 ft sampai kedalaman 8281 ft. Untuk mencegah adanya masalah leak akibat adanya reaksi antara senyawa korosi dengan steel, maka dilakukan pemilihan material casing pada production liner berdasarkan nilai partial pressure dan partial pressure yaitu casing grade L-80 13Cr 29 ppf.
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