Jurnal Offshore: Oil, Production Facilities and Renewable Energy最新文献

{"title":"Pengaruh Sumur Injeksi Terhadap Reservoir Panas Bumi Dominasi Air pada Simulasi Lapangan Panas Bumi Dieng Unit II Menggunakan Software Tough-2","authors":"Ari Wirawan","doi":"10.30588/JO.V3I1.489","DOIUrl":"https://doi.org/10.30588/JO.V3I1.489","url":null,"abstract":"Dieng merupakan salah satu lapangan panas bumi yang sistem reservoirnya didominasi air. Lapangan dengan reservoir dominasi air memerlukan separator untuk memisahkan fasa uap dan fasa cair, karena fluida didominasi air, fasa cair yang dihasilkan tentu lebih banyak daripada fasa gas sehingga perlu dilakukan injeksi untuk menghindari polusi.Kesetimbangan energi merupakan persamaan dengan prinsip dasar bahwa energi yang masuk kedalam suatu sistem sama besarnya dengan energi yang keluar dari sistem tersebut tanpa ada akumulasi. Prinsip ini digunakan untuk menganalisis bagaimana kondisi reservoir panas bumi Dieng di masa lalu sehingga dapat dijadikan pembelajaran untuk kasus serupa di masa sekarang dan masa yang akan datang. Massa yang keluar sistem antara lain dapat berupa manifestasi permukaan seperti fumarole dan hot springs. Proses ekstraksi fluida juga mengurangi massa yang ada dalam sistem. Sedangkan massa yang masuk kedalam sistem dapat berupa injeksi alami dan injeksi. Metodologi penelitian  ini, menggunakan prinsip kesetimbangan energi yang disimulasikan dengan bantuan simulator Tough-2. Hasil penelitian dapat menentukan keefektifan injeksi terhadap tekanan reservoir. Kesimpulan pada penelitian ini, bahwa injeksi perlu dilakukan sedini mungkin pada reservoir dominasi air untuk menghindari tekanandrop yang besar di awal produksi. Namun perlu diperhatikan juga posisi sumur injeksi yang akan difungsikan sebagai sistem recharge, karena akan berpengaruh pada temperatur reservoir, khususnya temperatur pada sumur produksi yang terdekat dengan sumur injeksi.Dieng is one of the geothermal fields where the reservoir system is dominated by water. A field with a water domination reservoir requires a separator to separate the vapor phase and liquid phase, because the fluid is dominated by water, the liquid phase produced is certainly more than the gas phase so injection needs to be done to avoid pollution. Energy balance is an equation with the basic principle that the energy that enters a system is as large as the energy coming out of the system without any accumulation. This principle is used to analyze how the condition of the Dieng geothermal reservoir in the past so that it can be used as learning for similar cases in the present and in the future. The mass that exits the system can be in the form of surface manifestations such as fumaroles and hot springs. The fluid extraction process also reduces the mass in the system. While the mass that enters the system can be either natural injection or injection. The research methodology uses the principle of energy balance simulated with the help of the Tough-2 simulator. Research results can determine the effectiveness of injection of reservoir tekanan. The conclusion of this study, that injection needs to be done as early as possible in the reservoir of water dominance to avoid a large tekanan at the beginning of production. However, it should be noted also that the position of the injection well will funct","PeriodicalId":328838,"journal":{"name":"Jurnal Offshore: Oil, Production Facilities and Renewable Energy","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127578374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Jenis Mineral Lempung Endapan Kuarter Pantai Semarang Jawa Tengah dan Potensinya sebagai Lumpur Pemboran","authors":"S. Widada, Hanna Afifah, S. Said, Hendaryono Hendaryono","doi":"10.30588/JO.V3I1.488","DOIUrl":"https://doi.org/10.30588/JO.V3I1.488","url":null,"abstract":"Penelitian ini bertujuan untuk mengetahui karakteristik litologi endapan Kuater Pantai Semarang yang meliputi komposisi mineralogi, distribusi serta potensinya sebagai bahan lumpur bor. Komposisi mineralogi ditentukan dengan menggunakan scanning electron microscope (SEM). Untuk mengetahui potensi sebagai lumpur bor ditentukan berdasarkan uji rheology dan filtration loss. Dari hasil analisis menunjukkan sedimen Kuater Pantai Semarang didominasi oleh endapan lempung dengan sedikit lanau pasiran yang terbentuk oleh proses pengendapan secara suspensi. Secara mineralogis, jenis mineral lempung yang dijumpai di daerah telitian sangat bervariasi. Dari analisis SEM menunjukkan jenis mineral lempung yang dijumpai antara lain kaolinit, illit dan campuran montmorilonit- illit. Berdasarkan hasil uji rheology menunjukkan pembacaan deal reading 600 RPM nilai yang dominan = 4, harga viskositas plastis = 1, nilai yield point = 2 dan nilai gel strength 10 menit = 1. Berdasarkan uji filtration loss menunjukkan volume air yang keluar rata-rata 188 ml, tebal kerak lumpur rata-rata 0,65 cm dan pH = 8. Berdasarkan uji rheology dan filtration loss dapat disimpulkan bahwa mineral lempung di daerah telitian tidak memenuhi kualifikasi untuk dipergunakan sebagai lumpur pemboran.The objectives of this study are to identify lithological characteristics of the Quaternary Sediments in the Semarang Coast including mineralogical composition, distribution and its potency as drilling mud. Mineralogical composition is determined using scanning electron microscope (SEM). The potency as drilling mud is identified based on rheology and filtration loss tests. Based on this study shows that this sediment is predominantly composed of clay-size material with minor sandy silt-size grain deposited by suspension process. Mineralogically, there are some clay mineral type in the study area based on SEM analysis, they are kaolinite, illite and mixed montomorillonite-illite.Based on rheology test showed that the value of deal reading 600 RPM = 4, plastic viscosity = 1, yield point = 1 and gel strength at 10 minute = 1. Based on filtration loss showed the average volume expelled water = 188 ml, the average thickness of mud cake = 0.65 cm and pH = 8. Based on rheology and filtration loss tests can be concluded that clay sediment in the study area can not be used as mud drilling material.","PeriodicalId":328838,"journal":{"name":"Jurnal Offshore: Oil, Production Facilities and Renewable Energy","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130967432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pengembangan Sumur Lapangan “HAFUZA” Lapisan Tiga Formasi Air Benakat Cekungan Sumatera Selatan Berdasarkan Analisa Lithofasies dan Petrofisik","authors":"Aisyah Indah Irmaya, Enda Apriani","doi":"10.30588/jo.v2i2.402","DOIUrl":"https://doi.org/10.30588/jo.v2i2.402","url":null,"abstract":"Lapangan tua cekungan  Sumatera Selatan  mempunyai tatanan reservoir secara geologi yang cukup rumit dan terjadinya penurunan produksi minyak. Peluang pencarian lapangan eksplorasi dan pengembangan sumur yang semakin sulit merupakan masalah lain yang dihadapi saat ini. Oleh karena itu diperlukan usahan-usaha untuk mempertahankan dan meningkatkan laju produksi dari lapangan minyak yang telah ada dengan cara penambahan sumur–sumur pengembangan. Cadangan Hidrokarbon pada lapisan tiga (L-3) lapangan “HAFUZA” masih besar dan belum tereksploitasi secara maksimal. Untuk mengoptimalkan produksi Hidrokarbon pada lapisan tiga (L-3) diperlukan kajian yang mendalam mengenai geologi, geofisik dan reservoir.  Metodologi yang digunakan pada penelitian ini adalah dengan melakukan pengolahan data real lapangan “HAFUZA”. Hal pertama yang dilakukan adalah persiapan data. Persiapan data yaitu data geofisik (seismik, struktur interpretasi), data geologi (log, korelasi sumur, petrofisik), data reservoir dan parameter pendukung lainnya. Kemudian dilakukan pengolahan data-data tersebut yang menghasilkan interpretasi lithofasies (model lithofacies) dan analisa petrofisik. Hasil analisa lithofasies dan petrofisik ini diharapkan dapat digunakan sebagai arah pengembangan sumur lapangan “HAFUZA” sehingga eksploitasi cadangan hidrokarbon pada lapisan tiga (L-3) dapat meningkat.The old field in the South Sumatra basin has a geologically complex reservoir structure and a decline in oil production. Opportunities to search for exploration fields and development of increasingly difficult wells are another problem currently faced. Therefore efforts are needed to maintain and increase the rate of production of existing oil fields by adding development wells. Hydrocarbon reserves in layer 3 (L-3) of the \"HAFUZA\" field are still large and have not been fully exploited. To optimize the production of hydrocarbons in the third layer (L-3), an in-depth study of geology, geophysics and reservoirs is needed. The methodology used in this research is to do real field data processing \"HAFUZA\". The first thing to do is prepare the data. Data preparation is geophysical data (seismic, interpretation structure), geological data (log, well correlation, petrophysical), reservoir data and other supporting parameters. Then the data is processed to produce lithofacies interpretation (lithofacies model) and petrophysical analysis. The results of lithofacies and petrophysical analysis are expected to be used as the direction of the development of the \"HAFUZA\" field well so that exploitation of hydrocarbon reserves in the third layer (L-3) can be increased.","PeriodicalId":328838,"journal":{"name":"Jurnal Offshore: Oil, Production Facilities and Renewable Energy","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116272023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analisis Rheologi Lumpur Lignosulfonat dengan Penambahan LCM Berbahan Serbuk Gergaji, Batok, dan Sekam Berbagai Temperatur","authors":"Ryan Raharja, Sugiatmo Kasmungin, A. Hamid","doi":"10.30588/JO.V2I2.403","DOIUrl":"https://doi.org/10.30588/JO.V2I2.403","url":null,"abstract":"Kehilangan sirkulasi lumpur merupakan kejadian yang sering terjadi dalam proses pemboran. Hilang lumpur yang terjadi bisa saja sebagian dari lumpur pemboran dan bahkan kehilangan lumpur pemboran secara total. Pada percobaan ini kehilangan lumpur pemboran akan diteliti dalam skala laboratorium. Dengan penambahan LCM diharapkan berguna untuk menanggulangi hilangnya lumpur tersebut. Dengan mencoba mengalirkan lumpur pada media berpori yang telah ditentukan, kehilangan lumpur akan dilihat dari seberapa besar lumpur yang hilang dalam skala laboratorium yang dibuat. Kemudian lumpur yang dibuat ditambahkan LCM berupa serbuk gergaji, batok kelapa dan sekam padi dan diteliti seberapa besar pengaruh LCM dalam mengurangi kehilangan lumpur tersebut. Campuran macam LCM lumpur tersebut juga diuji pengaruhnya terhadap beberapa tingkatan temperatur antara lain temperatur 80oF, 190oF dan 300oF, tentunya hal ini dilakukan untuk mendapatkan nilai sealing yang baik pada masing-masing LCM jika berada pada keadaan temperatur yang tinggi yang dikondisikan dengan kondisi sumur sebenarnya. Percobaan ini juga dilakukan untuk mengetahui filtrate loss yang terjadi pada berbagai macam campuran lumpur dengan LCM tersebut. Ketebalan mud cake yang terbentuk dalam pengukuran kehilangan filtrat juga diamati seberapa besar mud cake yang dihasilkan. Dan setelah itu reologi dari masing-masing lumpur tersebut juga diukur untuk menyimpulkan hasilnya. Loss of mud circulation is an event that often occurs in the drilling process. The loss of mud that occurred could have been partly from drilling mud and even total drilling mud loss. In this experiment, drilling mud losses will be investigated on a laboratory scale. With the addition of LCM, it is hoped that this will be useful to overcome the loss of mud. By trying to flow sludge in a predetermined porous media, sludge loss will be seen from how much sludge is lost on a laboratory scale created. Then the LCM sludge was added in the form of sawdust, coconut shells and rice husks and examined how much influence the LCM had in reducing the sludge loss. The mixture of LCM sludge is also tested for its effect on several temperature levels including 80oF, 190oF and 300oF, of course this is done to get a good sealing value in each LCM if it is in a high temperature condition which is conditioned to actual well conditions. This experiment was also conducted to determine the filtrate loss that occurs in various slurry mixtures with the LCM. The thickness of the mud cake formed in the measurement of filtrate loss was also observed how much the mud cake was produced. And after that the rheology of each mud is also measured to conclude the results.","PeriodicalId":328838,"journal":{"name":"Jurnal Offshore: Oil, Production Facilities and Renewable Energy","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126451621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimasi Hidrolika Sumur “SH” Lapangan “U” Kalimantan Timur dengan Metode Bit Hydroulic Horse Power","authors":"Sri Haryono","doi":"10.30588/jo.v2i2.399","DOIUrl":"https://doi.org/10.30588/jo.v2i2.399","url":null,"abstract":"Lapangan “U” ditempatkan di Cekungan Tarakan, yang merupakan salah satu daerah cekungan hidrokarbon Kalimantan Timur. Formasi yang ditembus oleh mata bor terdiri dari batupasir, batulanau, batulempung dan batubara. Oleh karena itu, kita perlu mengatur ulang sistem lumpur pengeboran terutama pada sistem hidrolik lumpur pengeboran. Penelitian ini bertujuan untuk mengoptimalkan sistem hidrolik dalam proses pengeboran untuk sumur “SH” Lapangan “U” menggunakan metode Bit Hydraulic Horse Power (BHHP). Hasil dari metode ini adalah untuk menentukan laju alir fluida BHHP yang optimal, daya tembus, ukuran nozzle, dan membandingkan parameter ini dengan data pengeboran aktual sebelum optimasi (data aktual) sehingga penetrasi proses pembentukan juga optimal. Berdasarkan data aktual dari semua pengeboran sumur ke 13 titik kedalaman harus dioptimalkan terutama dalam sistem pengeboran hidrolik dengan mengubah ukuran area aperture pada nozzle bor dan daya sesuai dengan perhitungan.The \"U\" field is located in the Tarakan Basin, which is one of the East Kalimantan hydrocarbon basin areas. The formation penetrated by the drill bit consists of sandstone, siltstone, claystone and coal. Therefore, we need to rearrange the drilling mud system, especially in the hydraulic drilling mud system. This study aims to optimize the hydraulic system in the drilling process for \"SH\" well \"U\" wells using the Bit Hydraulic Horse Power (BHHP) method. The result of this method is to determine the optimal BHHP fluid flow rate, permeability, nozzle size, and compare these parameters with actual drilling data before optimization (actual data) so that the penetration of the formation process is also optimal. Based on actual data from all wells drilling to 13 points the depth must be optimized especially in the hydraulic drilling system by changing the size of the aperture area on the drill nozzle and the power according to the calculation.","PeriodicalId":328838,"journal":{"name":"Jurnal Offshore: Oil, Production Facilities and Renewable Energy","volume":"47 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114023402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pemanfaatan Sludge Limbah Biodigester untuk Meningkatkan Kecepatan Produksi Biogas dan Konsentrasi Gas Metan dalam Biogas","authors":"Heni Dwi Kurniasari, M.Sc.Ph.D Ir. Ambar Pertiwiningrum","doi":"10.30588/jo.v2i2.404","DOIUrl":"https://doi.org/10.30588/jo.v2i2.404","url":null,"abstract":"Sludge hasil samping pengolahan kotoran sapi menjadi biogas masih mengandung bahan pencemar seperti E. coli, oleh karena itu apabila sludge dibuang langsung ke lingkungan akan menyebabkan pencemaran air, tanah, dan udara. Selama ini sludge hanya dimanfaatkan sebagai pupuk, padahal dalam sludge dimungkinkan masih mengandung mikroorganisme yang dapat mempercepat proses pembentukan biogas. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan sludge biodigester dalam pembentukan biogas dan mengetahui perbandingan optimal komposisi limbah kotoran sapi dengan sludge biodigester sebagai rekomendasi dalam percepatan proses pembentukan biogas. Sludge biodigester merupakan limbah biogas setelah mengalami pengeraman selama 14 hari. Dalam penelitian ini digunakan 3 macam digester dengan variasi komposisi yaitu digester-1 tanpa penambahan sludge biodigester, digester-2 dengan penambahan sludge biodigester sebesar 25%, digester-3 dengan penambahan sludge biodigester sebesar 50%. Volume digester sebesar 30 liter dan waktu pengeraman 14 hari. Parameter pendukung yang diuji meliputi: Volatile Solid (VS), dry content, kadar abu, temperatur, pH isian, komposisi gas. Hasil penelitian menunjukkan bahwa jumlah biogas yang cenderung lebih baik dihasilkan oleh digester-2 dengan bahan campuran 75 % kotoran sapi dan 25 % sludge biodigester. Digester-2 memiliki kadar VS rata-rata 4,62 %, kadar abu 1,82 %, dry content 93,56 %, dengan volume total biogas sebesar 33,4 liter dan kandungan metana rata-rata sebesar 12,19 %. Secara keseluruhan biogas terbentuk pada umur isian 3 hari, dengan rentang suhu 26 °C–30 °C dan pH 6,82–7,44. Penelitian ini memperlihatkan bahwa dengan adanya penambahan sludge biodigester (return sludge) mampu memberikan pengaruh yang lebih baik terhadap produksi biogas jika dibandingkan tanpa adanya penambahan sludge biodigester.Sludge byproduct of processing cow dung into biogas still contains pollutants such as E. coli, therefore if sludge is discharged directly into the environment it will cause water, soil and air pollution. So far, sludge is only used as fertilizer, whereas in sludge it is possible to still contain microorganisms that can accelerate the process of biogas formation. This study aims to determine the effect of the addition of biodigester sludge in the formation of biogas and determine the optimal comparison of the composition of cow manure with biodigester sludge as a recommendation in accelerating the process of biogas formation. Sludge biodigester is a biogas waste after experiencing incubation for 14 days. In this study used 3 kinds of digesters with variations in composition, namely digester-1 without the addition of biodigester sludge, digester-2 with the addition of biodigester sludge by 25 %, digester-3 with the addition of biodigester sludge by 50 %. The digester volume is 30 liters and the incubation time is 14 days. Supporting parameters tested include: Volatile Solid (VS), dry content, ash content, temperature, pH fil","PeriodicalId":328838,"journal":{"name":"Jurnal Offshore: Oil, Production Facilities and Renewable Energy","volume":"61 13","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132802325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Penentuan OOIP Berdasarkan Pemodelan Geologi dan Reservoir di Daerah Tanisha Cekungan Sumatra Selatan","authors":"Nila Rahayu, Ratnayu Sitaresmi, Moeh. Ali Jambak","doi":"10.30588/JO.V2I2.401","DOIUrl":"https://doi.org/10.30588/JO.V2I2.401","url":null,"abstract":"Perkembangan teknologi dapat dimanfaatkan untuk mengetahui karakteristik reservoir sebelum dilakukannya kegiatan eksplorasi dan eksploitasi. Salah satunya dengan pemodelan geologi dan pemodelan reservoir untuk mendapatkan gambaran bentuk bawah permukaan, karakteristik reservoir, dan OOIP.  Analisis data log dan interpretasi geologi dilakukan untuk mendapatkan informasi lingkungan pengendapan, marker lapisan, dan bentukan struktur reservoir yang digunakan sebagai dasar pembuatan model geologi. Analisis petrofisik akan memberikan informasi mengenai karakteristik batuan reservoir. Untuk mendapatkan model reservoir, hasil analisis petrofisik akan didistribusikan pada model geologi. Kemudian penentuan OOIP dapat dihitung dengan menggunakan metode volumetrik. Reservoir batupasir sudah terbukti menjadi reservoir produktif di berbagai lapangan migas, seperti reservoir batupasir pada Formasi Talang Akar di Lapangan Sungai Lilin. Terdapat enam lapisan yang menjadi obyek penelitian pada Formasi Talang Akar yaitu lapisan D1, D2, E1, E2, F, dan H yang diendapkan pada lingkungan delta plain–delta front terlihat dari pola log yang berkembang yaitu funnel shape, serrated shape, dan bell shape. Perbedaan lingkungan pengendapan akan mempengaruhi geometri dan karakteristik reservoir. Didapatkan nilai cut-off untuk Vcl ≤0.40, porositas ≥0.10 dan saturasi air ≤0.7. Hasil analisis petrofisika kemudian didistribusikan pada model geologi dengan metode Sequential Gaussian Simulation , dimana penyebaran lingkungan pengendapan menjadi arahan dasar penyebaran properti reservoir. Perhitungan OOIP pada enam lapisan di Formasi Talang Akar berdasarkan pemodelan reservoir sebesar 8,387 MSTB, dengan lapisan menarik terdapat pada lapisan E2 2,340 MSTB. Technological developments can be utilized to determine reservoir characteristics prior to exploration and exploitation activities. One of them is by geological modeling and reservoir modeling to get a picture of subsurface shapes, reservoir characteristics, and OOIP. Log data analysis and geological interpretation were carried out to obtain information on depositional environments, layer markers, and reservoir structure formations that were used as the basis for making geological models. Petrophysical analysis will provide information about reservoir rock characteristics. To get the reservoir model, the results of the petrophysical analysis will be distributed to the geological model. Then the determination of OOIP can be calculated using the volumetric method. Sandstone reservoirs have proven to be productive reservoirs in various oil and gas fields, such as sandstone reservoirs in the Talang Akar Formation in Sungai Lilin Field. There are six layers that are the object of research in the Talang Root Formation, namely layers D1, D2, E1, E2, F, and H which are deposited in the plain-delta front delta environment as seen from the developing log pattern, namely funnel shape, serrated shape, and bell shape. The difference in depositio","PeriodicalId":328838,"journal":{"name":"Jurnal Offshore: Oil, Production Facilities and Renewable Energy","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132181617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Proses Gasifikasi Limbah Padat Aren Menggunakan Fixed-Bed Updraft Gasifier dengan Variasi Jenis Bahan","authors":"Ucik Ika Fenti Styana, M. S. Cahyono","doi":"10.30588/JO.V2I2.400","DOIUrl":"https://doi.org/10.30588/JO.V2I2.400","url":null,"abstract":"Salah satu potensi sumber energi di Indonesia adalah limbah biomasa berupa limbah padat industri aren. Tujuan penelitian ini adalah untuk mengetahui pengaruh jenis bahan terhadap suhu reaktor dan efisiensi proses gasifikasi limbah padat aren. Bahan baku yang digunakan didapatkan dari Sentra Industri Tepung Aren di Dusun Daleman, Kecamatan Tulung, Kabupaten Klaten. Sebelum diproses bahan dikeringkan terlebih dahulu dengan dijemur di bawah sinar matahari selama sehari, kemudian dilakukan analisa proksimat. Variabel penelitian adalah jenis bahan berupa limbah padat aren murni, campuran limbah padat aren dan tempurung kelapa, serta tempurung kelapa murni. Proses gasifikasi diawali dengan memasukkan bahan ke dalam reaktor tipe Fixed-bed Updraft Gasifier, kemudian dinyalakan sampai keluar gas yang bisa terbakar dan diuji selama satu jam. Syn gas yang terbentuk dianalisa kandungan gasnya, kemudian dibakar untuk mengetahui efisiensinya. Hasil penelitian menunjukkan bahwa jenis bahan mempengaruhi suhu proses di dalam reaktor, dimana suhu optimal dicapai pada gasifikasi tempurung kelapa murni, yaitu proses pengeringan pada suhu 120 °C, pirolisis 340 °C, Reduksi 650 °C, dan oksidasi 721 °C. Gas yang dihasilkan tersebut dapat terbakar selama 15 menit, dibandingkan campuran limbah padat aren - tempurung yang terbakar 8 menit dan limbah padat aren murni yang hanya mampu terbakar 1 menit.One of the potential energy sources in Indonesia is biomass waste in the form of palm sugar solid waste. The purpose of this study was to determine the effect of the type of material on the reactor temperature and the efficiency of the sugar palm solid waste gasification process. The raw materials used were obtained from the Palm Sugar Flour Industrial Center in Daleman Hamlet, Tulung District, Klaten Regency. Before processing the material is first dried by drying it in the sun for a day, then proximate analysis is done. The research variable is the type of material in the form of pure sugar palm solid waste, a mixture of palm sugar solid waste and coconut shell, and pure coconut shell. The gasification process is initiated by inserting the material into the Fixed-bed Updraft Gasifier type reactor, then igniting the flammable gas and testing it for one hour. The syn gas formed is analyzed for its gas content, then burned to find out its efficiency. The results showed that the type of material influences the process temperature inside the reactor, where the optimum temperature is achieved in pure coconut gas gasification, namely the drying process at 120 °C, pyrolysis 340 °C, Reduction 650 °C, and oxidation 721 °C. The resulting gas can burn for 15 minutes, compared to a mixture of aren solid waste - shells that burn for 8 minutes and pure aren solid waste that can only burn for 1 minute.","PeriodicalId":328838,"journal":{"name":"Jurnal Offshore: Oil, Production Facilities and Renewable Energy","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130414961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Perencanaan Ulang Sucker Rod Pump pada Sumur “X” Lapangan “Y”","authors":"Edi Purwaka","doi":"10.30588/jo.v2i1.359","DOIUrl":"https://doi.org/10.30588/jo.v2i1.359","url":null,"abstract":"Tujuan dari penelitian ini untuk menentukan metode yang cocok digunakan untuk suatu sumur produksi, dan salah satu metode yang dipakai adalah pengangkatan buatan dengan pompa, yaitu Sucker Rod Pump (SRP). Metode pemakaian Pompa Angguk atau Sucker Rod Pump (SRP) digunakan apabila suatu sumur minyak sudah tidak dapat lagi mengangkat fluida dari dasar sumur ke atas permukaan secara sembur alam, atau dengan menggunakan metoda yang lain misalnya gas lift tidak memenuhi persyaratan. Sucker rod pump merupakan salah satu metoda pengangkatan buatan, dimana untuk mengangkat minyak kepermukaan digunakan pompa untuk mengangkat minyak kepermukaan digunakan pompa dengan rangkai roda (rod). Pompa ini digunakan untuk sumur-sumur dengan viskositas rendah-medium, tidak ada problem kepasiran, GOR tinggi, sumur-sumur lurus dan fluid level tinggi. Prinsip kerja sucker rod merupakan perpaduan gerak antara peralatan di permukaan dan dibawah permukaan. Dan hasil akhir yang diharapkan dengan menggunakan metode artficial lift ini adalah untuk memaksimalkan produksi sehingga dapat memenuhi target produksi yang telah ditentukan.The purpose of this research is to determine the suitable method used for a production well, and one of the methods used is artificial lifting with a pump, namely Sucker Rod Pump (SRP). The method of using a Sucker Rod Pump (SRP) is used if an oil well is no longer able to lift fluid from the bottom of the well to the surface by natural spray, or by using other methods such as a gas lift that does not meet the requirements. Sucker rod pump is one of the artificial lifting methods, where to lift the oil to the surface a pump is used to lift the oil to the surface using a pump with a rod chain. This pump is used for wells with low-medium viscosity, no sand problems, high GOR, straight wells and high fluid levels. The working principle of a sucker rod is a combination of motion between equipment on the surface and below the surface. And the expected end result using the artficial lift method is to maximize production so that it can meet predetermined production targets.","PeriodicalId":328838,"journal":{"name":"Jurnal Offshore: Oil, Production Facilities and Renewable Energy","volume":"384 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116005669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rencana Pengembangan Lapangan Gas Metana Batubara Dangkal (Shallow CBM) di Daerah Ida Manggala, Rantau, Kabupaten Hulu Sungai Selatan Kalimantan Selatan","authors":"B. Rahmad, Sugeng Raharjo, Eko Widi Pramudiohadi, E. Ediyanto","doi":"10.30588/jo.v2i1.351","DOIUrl":"https://doi.org/10.30588/jo.v2i1.351","url":null,"abstract":"Potensi kandungan gas batubara (Gas Content) Idamanggala, Rantau, Kalimantan Selatan berkisar 6,72 m3/ton. Sumberdaya gas batubara (Gas in Place/GIP) Rantau, Kalimantan Selatan 0,002 tcf (saturasi gas 90%), kisaran kedalaman 50-150 meter. Gas Metana Batubara (GMB) diproduksi dengan cara terlebih dahulu merekayasa batubara sebagai reservoir agar diperoleh cukup ruang sebagai jalan keluarnya gas metana. Proses rekayasa diawali dengan memproduksi air (dewatering) agar terjadi perubahan keseimbangan mekanika. Setelah tekanan turun, gas batubara akan keluar dari matrik batubara. Gas metana kemudian mengalir melalui rekahan batubara dan akhirnya keluar menuju lubang sumur. Puncak produksi Gas Metana Batubara (GMB) bervariasi antara dua minggu sampai dengan tiga tahun. Rencana pengembangan lapangan dimulai dari tiga tahun pertama dengan melakukan lima sumur pilot (pilot well). Pemboran pilot dilakukan untuk mengenal dimensi seam dan kualitasnya, baik secara lateral maupun vertikal. Apabila regulasi pemerintah sesuai  dan memungkinkan untuk memulai pengembangan, maka pengembangan sumur produksi dapat dimulai pada tahun 2021. Pengembangan Lapangan Gas Batubara Daerah Rantau Kalimantan Selatan diprioritaskan untuk kebutuhan pasar lokal yaitu kebutuhan tenaga listrik setempat baik industri maupun rumah tangga dan jika memungkinan dapat dialirkan melalui pipa untuk perusahaan gas negara.Coal gas content potential  (Gas Content) Idamanggala, Rantau, South Kalimantan is around 6.72 m3/ton. Rantau coal gas resources (Gas in Place/GIP), South Kalimantan 0.002 tcf (90% gas saturation), range of depths from 50-150 meters. Coal Methane Gas (GMB) is produced by first engineering coal as a reservoir in order to obtain enough space as a way out of methane gas. The engineering process begins with producing water (dewatering) so that there is a change in mechanical balance. After the pressure drops, coal gas will come out of the coal matrix. Methane gas then flows through the coal fractures and finally exits into the wellbore. The peak production of Coal Methane Gas (GMB) varies between two weeks to three years. The field development plan starts from the first three years by conducting five pilot wells. Pilot drilling is carried out to recognize the dimensions of seam and its quality, both laterally and vertically. If government regulations are appropriate and allow to start development, the development of production wells can begin in 2021. The development of the South Kalimantan Overseas Coal Coal Field Development is prioritized for the needs of the local market, namely the needs of local electricity both industrial and household and if possible can be channeled through pipes for the state gas company.","PeriodicalId":328838,"journal":{"name":"Jurnal Offshore: Oil, Production Facilities and Renewable Energy","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122576904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}