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All Journal Jurnal Teknik Industri Terintegrasi (JUTIN) Journal of Comprehensive Science
Kukuh Jalu Waskita
Sekolah Tinggi Teknologi Migas Balikpapan
Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Mechanical Engineering

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Studi Penerapan Cap String dalam Mengatasi Liquid Loading pada Sumur Gas "X" Lapangan "Y" Arthur Cesar Bida; Kukuh Jalu Waskita
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 3 (2026): July
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i3.60818

Abstract

Reservoir pressure depletion in gas wells that have been producing for a long period frequently leads to liquid loading, which is the accumulation of liquids at the bottom of the wellbore that restricts gas flow to the surface. This study aims to analyze the factors for selecting candidate wells for cap string installation and to compare production performance before and after its implementation in Well "X" of Field "Y". The evaluation was conducted by analyzing bottom hole pressure (BHP), wellhead pressure (WHP), gas flow rate, liquid production rate, water cut, as well as tubing configuration and perforation intervals. Prior to cap string installation, Well "X" experienced a decline in WHP to below 400 psi, while the gas production rate decreased to nearly zero due to severe liquid accumulation. Following cap string installation, the gas production rate increased to 2.0–3.5 MMscfd, and WHP became more stable within the range of 300–400 psi. The results demonstrate that the cap string effectively increased gas flow velocity, enabling the accumulated liquids to be lifted to the surface and thereby improving overall well performance.
Perencanaan Squeeze Cementing pada Sumur “RH-205” Lapangan “SGT” Menggunakan Metode Balance Plug Ricky Hizkia; Kukuh Jalu Waskita; Nuruddin Kafy El-Ridlo
Journal of Comprehensive Science Vol. 5 No. 7 (2026): Journal of Comprehensive Science
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/jcs.v5i7.4259

Abstract

Squeeze cementing merupakan salah satu metode penyemenan sekunder yang digunakan untuk memperbaiki kualitas penyemenan, menutup zona perforasi yang tidak diinginkan, serta menjaga integritas sumur selama kegiatan produksi berlangsung. Pada Sumur “RH-205” Lapangan “SGT” terjadi peningkatan produksi air (water cut) pada interval perforasi tertentu sehingga diperlukan perencanaan penyemenan ulang untuk melakukan isolasi zona yang sudah tidak ekonomis. Penelitian ini bertujuan untuk merancang pekerjaan squeeze cementing menggunakan metode balance plug dengan menentukan kebutuhan volume slurry cement, jumlah semen, volume spacer ahead, spacer behind, displacement fluid, serta nilai Maximum Allowable Surface Pressure (MASP) yang aman selama operasi berlangsung. Metode penelitian dilakukan melalui pengumpulan dan pengolahan data sumur serta data semen, kemudian dilanjutkan dengan perhitungan teknis berdasarkan kapasitas casing, tubing, interval perforasi, karakteristik slurry, tekanan rekah formasi, dan parameter desain lainnya. Hasil penelitian menunjukkan bahwa kebutuhan total slurry cement sebesar 7 bbl dengan jumlah semen sebanyak 34 sack menggunakan semen kelas G dan kebutuhan air pencampur sebesar 4,046 bbl. Volume spacer ahead yang diperlukan sebesar 5 bbl, spacer behind sebesar 0,95 bbl, serta displacement fluid sebesar 12,02 bbl. Nilai MASP yang diperoleh sebesar 557,02 psi sehingga tekanan operasi masih berada dalam batas aman terhadap tekanan rekah formasi. Berdasarkan hasil analisis, metode balance plug dinilai sesuai diterapkan pada Sumur “RH-205” karena mampu memberikan desain penempatan semen yang terkontrol dan mendukung keberhasilan isolasi zona.
Co-Authors Arthur Cesar Bida Nuruddin Kafy El-Ridlo Ricky Hizkia