Some petroleum wells that are no longer productive still have heat in their formation rocks. Those heat can be extracted and utilized by injecting working fluid into the wellbore. The current study’s objective was to create a 2D numerical calculation program for transient flow temperatures inside the well then it was used to calculate the temperature distribution in oil and gas fields in the Arun field and BK Area. The injected fluids were modeled as a double-pipe heat exchanger. Heat transfer processes inside the wellbore were convection in the inner pipe and the annulus and conduction in the pipe walls and rock formations. The computational calculation used a finite difference method. The computation results were then compared with calculations from the literature. After being validated, the program was used to calculate the Arun field and BK Area temperature distributions. This study found that compared with the reference literature, the current results had a similar optimum temperature range of 130°C-160°C but had different profiles shape with an average deviation of 12%. In the Arun fields, simulation results indicated that the field could reach temperatures between 90°C-120°C and was classified as a medium-temperature geothermal source. BK Area could reach optimum temperatures between 50°C-80°C and be classified as the low-temperature geothermal.
Hasil belajar pada mata pelajaran biologi siswa SMA masih rendah. Hal ini disebabkan baik dari sarana prasarana, metode, maupun model pembelajaran yang digunakan selama proses pembelajaran daring. Sehingga perlu dilakukan tinjauan hasil belajar peserta didik, untuk melihat hasil belajar selama pembelajaran daring. Penelitian ini bertujuan menganalisis hasil belajar biologi peserta didik yang pembelajarannya dilakukan dalam jaringan di daerah pesisir selatan pada mata pelajaran Biologi. Penelitian ini adalah penelitian deskriptif kualitatif. Data yang digunakan berupa data sekunder yaitu berupa hasil belajar yang terkait dengan hasil belajar biologi peserta didik untuk Kelas XI. Teknik analisis data yang digunakan terdiri dari 3 tahap yaitu reduksi data, penyajian data (Data Display), Menarik Kesimpulan dan Verifikasi (Conclusion Drawing and Verification). Sampel penelitian berjumlah 839 orang peserta didik yang terdiri dari 6 SMA Kelas XI. Hasil yang didapatkan dari penelitian diperoleh 94,4% peserta didik yang mencapai Kriteria Ketuntasan Minimum (KKM) di sekolah pertama, 42,36% peserta didik yang mencapai KKM di sekolah kedua, 47,16% peserta didik yang mencapai KKM di sekolah ketiga, 5,26% peserta didik yang mencapai KKM di sekolah keempat, 97,05% yang mencapai KKM di sekolah kelima, dan sekolah keenam dengan 6,81% peserta didik yang mencapai KKM. Berdasarkan hasil penelitian dapat disimpulkan bahwa banyak peserta didik yang memiliki hasil belajar rendah dan sedikit dari peserta didik yang hasil belajarnya tidak begitu berbeda atau berubah dari pembelajaran tatap muka.
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