Kebutuhan rumah tinggal sementara seperti rumah kost yang semakin meningkat berbanding lurus dengan peningkatan pertumbuhan urbanisasi oleh pekerja di Indonesia. Pekerja yang mendapatkan pekerjaan di luar daerah harus mencari rumah kost pada area lokasi bekerja. Pencarian rumah kost yang ada pada masyarakat masih melakukan pencarian sederhana seperti datang ke lokasi untuk melihat langsung rumah kost. Pencarian dengan cara sederhada tersebut menyulitkan pencari melakukan pembandingan harga sewa, dan fasilitas karena harus datang ke lokasi rumah kost secara langsung. Permasalahan dalam mencari rumah kost tersenbut mendorong pembuatan aplikasi pencarian dan penyewaan rumah kost berbasis Web dan mobile Android dengan menggunakan metode penelitian terapan dengan diagram fishbone untuk menganalisis kebutuhan pencari dan pemilik rumah kost. Pencari terbantu dalam melakukan pencarian dan penyewaan rumah kost yang diinginkan dan pemilik terbantu dalam melakukan promosi rumah kost. Kata kunci: Pencarian, Penyewaan, Rumah Kost, Website, Android
Handil Field is a giant mature oil and gas field situated in Mahakam Delta, East Kalimantan Indonesia. Peripheral Low Salinity Water injection was performed since 1978 with extraordinary results. This paper describes the success story of this secondary recovery by low salinity water injection application in the peripheral of Handil field main zone, which successfully increased the oil recovery and brought down the remaining oil saturation beyond the theoretical value of residual oil saturation. Water producer wells were drilled to produce low salinity water from shallow reservoirs 400 - 1000 m depth then it was injected to main zone reservoirs where the main accumulation of oil is situated. This low salinity water reacted positively with the rock properties and in-situ fluids which is described as wettability alteration in the reservoir. It is related to initial reservoir condition, connate water saturation, rock physics and connate water salinity. This peripheral scheme then observed having the sweeping effect on top of pressure maintenance due to long period of injection. The field production performance was indicating the important reduction of residual oil saturation in some reservoirs with continuous low salinity water injection. From static Oil in Place calculation, some reservoirs have high current oil recovery up to 80%. This was proved by in situ residual oil saturation measurement which was performed in 2007 and 2011. It was indicating the low residual saturation as low as 8% - 15%. This excellent result was embraced by a progressive development plan, where water flooding with pattern and chemical injection will be performed later on. The continuation of this peripheral injection is in an on-going development with patterns injection which is called water flooding development. An important oil recovery can be achieved with a simple scheme of low salinity injection, performed in a close network injection, where the water treatment is simple yet significant oil gain was recovered. This innovation technique brings more revenue with less investment compared to chemical EOR injection.
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