Banyak faktor yang memengaruhi proses pengangkatan minyak ke permukaan, salah satu faktornya yaitu pemilihan ukuran tubing yang tepat untuk laju produksi optimal. Sumur X-097 dan X-017 di PT Pertamina Hulu Rokan Zona 4, Prabumulih Field menggunakan ukuran tubing 2,5 in(ID) di mana dengan menggunakan ukuran tubing tersebut laju produksi sumur X-097 sebesar 410 BFPD atau 34,83% dari laju produksi…
Penelitian ini bertujuan untuk simulasi dan eksperimentasi skala laboratorium terhadap proses pengecilan ukuran batuan kapur yang dilakukan pabrik semen untuk memenuhi target yang direncanakan dengan penggunaan energi yang efisien. Studi kasus dalam penelitian ini adalah batu kapur asal PT Semen Baturaja (Persero) dan pengambilan sampel dilakukan di area Blok 48 dan 55 secara grab sampling deng…
Ideal haul road geometry can support the smooth running of coal hauling activities. Coal hauling activities use hauling equipment in the form of dump trucks which increase the cost of mining activities from the fuel consumption used. PT Bara Selaras Resources uses PX105AT for the East Pit and Mercedes-Benz Axor 2528C for the West Pit. The actual fuel consumption used is greater than what has be…
PT Bara Energi Lestari adalah perusahaan pemilik konsesi lahan pertambangan batubara seluas 1.495 ha di Gampong Seumambek, Kabupaten Nagan Raya, Provinsi Aceh. Kegiatan pengupasan lapisan overburden (OB Removal) saat ini dikerjakan di Pit Utara seluas 13,77 ha dengan jenis material berupa claystone dengan berat jenis 2,3 ton/m3. Pekerjaan pencatatan loss time pada kegiatan OB Removal di PT Bara…
PT Baturona Adimulya merupakan perusahaan jasa industri pertambangan yang termasuk dalam anggota grup perusahaan PT Ucoal Sumberdaya. PT Baturona sedang mengerjakan salah satu proyek di Kecamatan Keluang, Babat Supat, Kabupaten Musi Banyuasin, Provinsi Sumatera Selatan. Aktivitas penambangan memerlukan sistem penyaliran agar tidak menganggu aktivitas produksi. Pada Pit 5 tumpang tindih antara s…
The ease of accessing information on the internet has led to the emergence of many online shopping platforms, resulting in an increasing number of online courier companies providing safe package delivery services to consumers. This poses a risk to couriers who spend their working hours on the highways. Therefore, good safety riding practices are necessary to minimize traffic accidents. The purp…
Oil is one of the most important energy sources for human life. One of the common causes of the decline in oil production is the decrease in pressure in reservoirs, because the primary energy used to lift oil to the surface will be reduced over time. TheHall Plot method is most often used to analyze the performance of an injection well bymaking a curve, between pressures multiplied by a certain…
Bukit Asam menggunakan metode tambang terbuka. Slopes merupakan salah satu faktor terpenting dalam aktivitas pertambangan. Rembesan dipertimbangkan terjadi di lokasi penelitian pada atas lereng disposal beruang TAL, di mana terdapat sungai Lawai di puncak lereng yang dapat mempengaruhi stabilitas lereng tambang, sehingga diperlukan analisis. Analisis menggunakan metode Morgenstern-Price dengan …
In carrying out mining activities PT. Edco Persada Energi has opened 2 pits, of which only pit 2 is currently operating, while pit 1 has entered the post-operation stage, before operating PT. Edco Persada Energi has designed the final mining limit (pit limit design) for pit 2 using Minecraft software which functions as operational security control. To maximize mining recovery, it is necessary t…
PT. Bukit Asam, Tbk is a company that is actively engaged in coal mining. One of the pits owned by PT. Bukit Asam, Tbk, namely Pit 2 Banko Barat, will reach its economic limit, so a reserve conservation plan is needed in an effort to maximize the reserves in Pit 2 Banko Barat. The reserve optimization plan is the implementation of mining using the auger mining method as a reserve maximization. …
PT Putra Muba Coal has a total IUP area of 2,947 ha and since 2008 has been fulfilling coal demand for various local businesses and international markets. The company is one of the concession holders with South Sumatra Governor number 316/PTS/DIPARTAMBEN/2011. Based on the Minister of Energy and Mineral Resources, from the process of mining activities to shipping, the number of coal losses is m…
Pembongkaran material pada pit Suban Jeriji Selatan (SJS) Banko Tengah PT Bukit Asam Tbk menggunakan metode pemboran dan peledakan dikarenakan beberapa lokasi pada pit ini tersusun atas material keras yang jika dilakukan pemberaian secara langsung akan mengakibatkan kurang efektifnya pekerjaan penambangan. Peledakan yang dilakukan di pit SJS dianggap masih belum optimal yang ditandai dengan per…
Limestone is one of the mined materials commonly used in the cement industry. The mining method employed for this material is one of the open-pit mining methods. Open-pit mining activities will create slope dimensions, and the gentle slope dimensions lead to suboptimal mining. PT. Semen Baturaja Tbk. has slope geometry in the low wall area that is gentle, resulting in a high safety factor in th…
In 2025, PT. Duta Bara Utama targets coal production of 2.250.000 tons of coal with SR that must less than 3,5. The actual production in January 2025 was 112.480,03 tons of coal and 230.486,10 BCM of overburden. . The out pit dump disposal areas, namely the northern and southern disposals in 2025, cannot accommodate the planned overburden volume, so dumping will be done in the in pit dump. Plan…
The methods of excavation currently performed at the PT. MME are free digging and ripping. Technical studies carried out to determine whether the overburden material excavated is actually free digging and ripping, according to the characteristics of the overburden mass and the digging force capabilities of excavator have not been investigated. This study is based on observation in the field, wh…
Coal mining activities at PT Ulima Nitra Site BKL use an open-pit mining method (surface mining). The open-pit mining method forms a large depression, causing water entering the pit to potentially accumulate and create ponding if not properly managed, as the water comes from runoff flowing into the pit. Based on field observations, the main sump at PT Ulima Nitra Site BKL, with a volume of 34,9…
PT Pusaka Mitra Artha is a coal mining company administratively located in Gunung Tuo village, Mandiangin district, Sarolangun City, Jambi Province. PT Pusaka Mitra Artha plans to mine 700,000 tons of coal per year. So it is necessary to plan for mining design, overburden backfill design, and planning the needs of loading and hauling equipment per year to achieve the planning target. This study…
Geometri jalan adalah faktor utama yang erat kaitannya dengan aktivitas alat angkut, jika geometri jalan ini masih tidak sesuai dengan standarnya dan ditambah dengan kondisi permukaan yang juga kurang baik, dapat berakibat pada peningkatan cycle time sehingga menyebabkan produktivitas dari alat angkutnya menjadi menurun. Oleh karena itu, perlu untuk melakukan analisis geometri jalan agar dapat …
PT Thiess Contractors Indonesia is a multinational company that provides contracting services for coal mining. In the process of removing overburden using blasting techniques, it certainly produces waste energy, one of which is ground vibration. The results of ground vibration measurements in November-December 2023 exceeded 2 mm/second, exceeding the threshold of Kep-49/MENLH/11/1996. This has …
Coal mining activities may cause significant landform changes and environmental degradation; therefore, a well-planned reclamation program in accordance with prevailing regulations is required. This study aims to develop a technical reclamation plan for the year 2025 at the former coal mining area of Pit Lawai, PT Bumi Gema Gempita, Lahat Regency, South Sumatra Province. The research methods in…
PT Bukit Asam (Persero) Tbk., a state-owned coal mining company, operates in the Tanjung Enim area of South Sumatra with a Mining Business Permit (IUP) covering 66,414 hectares. Coal extraction is carried out using an open-pit surface mining method, where overburden is excavated and transported to designated waste dump or backfilling areas. The Tanjung Enim Mining Unit (UPTE) consists of three …
Acid mine drainage is a common issue in coal mining. The acid mine drainage in the collection ponds or sumps must be properly managed to meet existing environmental quality standards. According to the water quality standards in Regulation of the Governor of South Sumatra Number 8 of 2012, the pH limit for acid mine drainage is between 6 and 9, and the TSS (Total Suspended Solids) limit is 300. …
PT Bumi Sekundang Enim Energy has an area of 14,960 ha for coal mining. One of the factors that causes the company to increase its production target in 2024 is because the need for coal is increasing. In the previous year the production target was set at 1,000,000 Metric Tons and it is planned to increase it in 2024 to 2,000,000 Metric Tons. In order to support the achievement of increasing pro…
The tin ore processing process is carried out by separating the concentrate and tailings contained. In its application, there are still many valuable minerals that escape and are wasted through tailings, causing the potential for low-grade tin ore from the rest of the processing process (SHPP). To optimize the processing of tin ore, it is necessary to carry out further processing, one of which …
Penelitian ini bertujuan untuk mengetahui dan menguji secara empiris pengaruh good corporate governance terhadap kinerja keuangan perusahaan LQ-45. Komponen good corporate governance dalam penelitian ini diukur dengan persentase kepemilikan institusional, kepemilikan manajerial, komisaris independen, dan komite audit. Kinerja keuangan perusahaan LQ-45 diukur dengan Return On Assetss. Data penel…
Optimizing the usage of hauling equiptment is crucial to achieve production targets, one of which is the addition of ideal change shift location. Currently there are three change shift locations positioned 1.500 m to 3.500 m from the mining front, reducing haulers effective time in the field. The purpose of this study is to evaluate the impact of adding change shift locations on productivity us…
PT Bukit Asam Tbk (PTBA) in Tanjung Enim, South Sumatra, a mining company uses the surface mining method with dump trucks to transport coal. The condition of the haul road greatly affects the productivity of the equipment, especially during rain which causes slippery and standby time. To improve performance, PTBA maintains the road and creates All Weather Road (AWR) in several segments. In the …
Coal is one of the main energy sectors in Indonesia, playing a crucial role in the country's economic development. The coal industry's contribution comes through a royalty system, which is a major source of government revenue. In 2022, the government raised the coal royalty rate to a range of 4% to 13.5% and adjusted the tariff classes based on calorific quality. Additionally, a progressive roy…
The Asian Tin Belt or what is known as the tin belt that crosses Southeast Asia, is more than 3000 km long and consists of several countries, namely Myanmar, Thailand, Malaysia, Singapore and Indonesia. One of the processing processes for minerals is the processing of tin ore. from the tailings known as SHP still contains Rare Earth Metals (LTJ) minerals. The potential for LTJ found in tailings…
The development of manufacturing technology through 3D printing methods, such as Fused Deposition Modeling (FDM), has revolutionized the industrial paradigm with advantages in efficiency, design flexibility, and production speed. This technology enables the creation of three-dimensional objects with high precision, opening up new opportunities in various industries. Polyethylene terephthalate (…