INVESTIGASI MULTIDISIPLIN TERHADAP KEBOCORAN SUMUR TA PADA LAPANGAN PATUHA
DOI:
https://doi.org/10.53026/prosidingsntem.v5i1.647Keywords:
Analisis Geokimia, Kebocoran Casing, Lapangan Dominasi Uap, Lapangan Patuha, Panas BumiAbstract
Lapangan Patuha merupakan salah satu lapangan dengan tipe dominasi-uap yang mulai beroperasi sejak bulan September tahun 2014. Mayoritas sumur produksi pada lapangan ini memiliki steam fraction 100%, namun Sumur TA yang merupakan bagian dari Sumur Produksi Unit 1 menunjukkan anomali dengan kemunculan air yang ikut terproduksi secara terus menerus semenjak sumur ini diproduksikan. Objektif penelitian ini adalah untuk melakukan observasi terhadap evidence serta Root Cause Analysis (RCA) munculnya fraksi air pada Sumur TA. Metode analisis yang digunakan meliputi integrasi data secara komprehensif dengan mengumpulkan informasi melalui Pressure Temperature Spinner (PTS) Logging Survey, Magnetic Thickness Detector (MTD) Survey, Downhole Video (DHV), dan Pengukuran Tracer Flow Test (TFT), serta analisis sampel geokimia air di permukaan berupa Separated Water (SPW) dari Bottom Sampling Port. Hasil evaluasi geokimia menyatakan bahwa air yang ikut terproduksi merupakan produk air dari permukaan (air meteorik) dengan tipe air sulfat yang kemudian masuk ke wellbore akibat terdapatnya kebocoran pada casing di kedalaman 163 mMD.
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