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Kosasih
Universitas Sangga Buana
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EFFECT OF TEMPERATURE ON RUMEN MICROBES ACTIVITY TO PRODUCE METHANE FROM COAL Bambang Agus W; Kosasih Kosasih; Irawan Sugoro; Dahrul Effendi; Byan M Pratama
Scientific Contributions Oil and Gas Vol 37 No 3 (2014)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.37.3.636

Abstract

This paper is intended to show the effect of temperature on utilization microbes of rumen Àuid to produce methane from coal (lignite, sub-bituminous and bituminous). By considering to field applications, where the CBM reservoir temperature is higher than the microbes natural living conditions in the cow's body, the experiment is carried out at a temperature of 30ºC and 50ºC with an incubation period time of 105 days. Laboratory scale study was conducted by mixing the coal, formation water and rumen Àuid (1: 1: 1). This mixture were inserted into a closed chamber equipped with a hose to measuring the volume of gas produced. The experiment results showed that the microbes of the rumen Àuid can grow on different type of coal and temperatures. The volume of gas production increased during the incubation time for all treatments. Obtained the highest methane production occurs at a temperature treatment of 50ºC for the sub-bituminous coal with a volume of 0.627liters/kg (22.14 cf/ton) from the total volume of gas produced as much as 7.25liters/kg (256 cf/ton).
Estimation Of Water Saturation In Carbonate Reservoirs Without Resistivity Log Data. Part Ii: Formulation Of A New Model Bambang Widarsono; Heru Atmoko; Ridwan Ridwan; Kosasih Kosasih
Scientific Contributions Oil and Gas Vol 32 No 1 (2009)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.32.1.827

Abstract

This paper is the second part of the two-part report on study for establishing alternative models that are valid for Indonesian carbonate reservoirs. In this second part formulation of the new models is presented. For the study, 407 plug samples taken from various limestone reservoirs in Indonesia were used. Following Lucia’s procedure the samples were classified, grouped, averaged, and their capillary pressure data was formulated to form water saturation models that are essentially functions of porosity and height above free water level. Validity test on the models are performed on two wells in West Java with very encouraging results. With using the Archie model as reference, justified using well test data, the new models prove themselves reliable while the original Lucia models provide far too optimistic estimates. The model validity check shows tha the models are valid for at least Class 1 and Class 2 rocks in accordance with Lucia classification. Study on Class 3 rock is needed in the future
Co-Authors A Andini Radisya Pratiwi Afira Febriani Afira Febriani Surya Wijaya Akmal Fauzi Yudistira Asep Effendi Ayu Laili Rahmiyati Azhar Affandi Bambang Agus W Bambang Widarsono Biller Panjaitan Byan M Pratama Chevie Wirawan Cicik Khildar Rizqi Citra Salsabilla Dahrul Effendi Debie K. R. Kalalo Deni Nurdyana Hadimin Denok Sunarsi Denok Sunarsi Denok Sunarsi Denok Sunarsi Devi Delvita Diana Damayanti Didin Saepudin Djogo, Ony Enung Susilawati Erlangga, Heri Etty Sofia Etty Sofia Mariati Asnar Fajar Wahyudi Farida Yulianty Farida Yuliati Farida Yuliati Farida Yuliati Farida Yuliaty Firda Nur Laila Firda Nur Laila Firman Perkasa Yudha Fitriana Fitriana Grace Angela Philips Haddan Dongoran Harto Necsen Linelejan Hayun Setiawan Hersusetiyati Hersusetiyati Heru Atmoko Ida Ayu Triana Imas Siti Masitoh Ine Aprianti Irawan Sugoro Ittang Somba Kahpi, Heri Sapari Komara, Erwan Mariati Mariati Marissa Grace Haque Marissa Grace Haque Megandhi Gusti Wardhana Ni Desak Made Santi Diwyarthi Nina Risnawaty Norikazu Suzuki Nur Widyana Fajrin Nurhaeni Sikki Nurjaya Nurjaya Raden Roro Vemmi Kesumadewi Rendi Maulana Ricky Agusiady Ridwan Ridwan Rony Edward Utama Rukhiyat Sayidin Rukhiyat Syahidin Santi Rimadias Shandhi Abdulrahman Sobarna Kartamihardja Sri Dati Octaviani Sri Rochani Mulyani Sumeidi Kadarisman Suwanto Suwanto Syamsul Bahri Taufan Nugroho Taufan Nugroho Taufik Zulfikar Taufik Zulfikar Tri Utami Turmudhi, Anis Vip Paramarta Vip Paramarta Vivi Avionica Widjadjanti Oetojo Widjadjanti Oetojo Widjajanti Utojo Widjajanti Utoyo Yessica Febriany Yuan Badrianto Yuliarti Pasau Zaenal Aripin