Potensi Mineral Silika Pulau Rupat sebagai Proppant Alami Berdasarkan Kriteria API 19C
Kata Kunci:
Proppant, Silica, Rupat, API 19CAbstrak
Penelitian ini mengevaluasi kelayakan mineral silika dari Pulau Rupat, Riau, sebagai kandidat proppant alami untuk aplikasi hydraulic fracturing, berdasarkan spesifikasi API RP19C. Pengujian melibatkan tiga sampel, yaitu mineral silika Pulau Rupat tanpa modifikasi, mineral silika Pulau Rupat coated resin 5 %, dan mineral silika Pulau Rupat coated resin 10 %. Karakteristik utama yang diuji meliputi roundness dan sphericity, bulk density, turbidity, acid solubility, dan crush resistance. Hasil penelitian menunjukkan bahwa roundness dan sphericity meningkat secara signifikan dengan coated resin, di mana sampel coated 10 % mencapai nilai 0,7 dan memenuhi batas minimum API (>0,6). Semua sampel memiliki nilai bulk density di atas standar minimum API (>1,5 gr/cc), yakni masing-masing 1,53 gr/cc, 1,58 gr/cc, dan 1,60 gr/cc. Nilai turbidity semua sampel juga tergolong rendah, berada pada rentang 20–38 NTU, jauh di bawah batas maksimum 250 NTU. Acid solubility menurun seiring peningkatan fraksi resin, dari 2,8% (tanpa coating) menjadi 2 % dan 1,2 %, memenuhi ambang batas <3 % sesuai API. Pada uji crush resistance seluruh sampel menunjukkan tingkat kerusakan yang dapat diterima, yaitu 6,7 % pada 2000 psi untuk mineral silika pulau Rupat, serta 9 % dan 8 % pada 6000 psi untuk resin coated mineral silia Pulau Rupat, dengan batas maksimum <10 %.
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