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RCP GAS FIELD DEVELOPMENT PLAN TO FULLFILL GAS SALES AGREEMENT PLAN Herianto, Herianto; Kristianto, Dedi; Rahmawan, Dhimas Arief
Journal TECHNO Vol. 8 No. 1 (2022): Mei
Publisher : Universitas Pembangunan Nasional Veteran Yogayakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/journal techno.v8i1.7319

The RCP field is an exploration field which is currently in the early development stage. From the drilling of exploration wells, a gas reservoir has been found in the Basal Sand formation. The Basal Sand Formation itself is a fairly deep formation and includes a large reservoirhigh pressure high temperature(HPHT). This RCP field hasInitial Gas Inplace IGIP) of 1202 Bcf. Currently there is a demand for gas supply of 50 MMSCFD for 10 years, so it is necessary to evaluate as a supporter of the Gas Sale and Purchase Agreement (PJBG). This research is expected to find out that the RCP field is able to fulfill the PJBG according to the plan. The development of the RCP Gas Field starts from the IGIP calculation, then calculations are carried outrecovery factorto getestimate ultimate recovery(EUR), which will then be corrected for reserves of impurities. The next stage is the field development scheme. For field development during the PJBG contract period, it is planned to use 3 development wells with optimization of the production rate using chokes. Gross rate field of 67 MMSCFD (22.3 MMSCFD per well) to getgas salesof 50 MMSCFD. After planning the development of the field, the next step is to calculate the economy. The economic calculation is calculated using the PSC scheme based on Fiscal Termapplicable in the RCP field. The results of the analysis of the development scheme show that the RCP field is able to produce according to the PJBG plan with gas sales daily amount of 50 MMSCFD for 10 years. Economic calculations show positive results so that it is concluded that the RCP Field has economic value and is feasible to be developed. From the economic calculation, we get NPV@10 % = 96.2 MM US$; IRR = 27.1%; POTS = 2.5 years.

THE STRUCTURAL GEOLOGY STUDY AND SLOPE STABILITY ANALYSIS IN KARANGBAWANG VILLAGE, AJIBARANG, CENTRAL JAWA Setiawan, Jatmika; Setiawan, M. Nurjati; Rahman, M. Gazali; Prasetyo, Abdullah Panji; Hapsari, Nuli
Journal TECHNO Vol. 8 No. 1 (2022): Mei
Publisher : Universitas Pembangunan Nasional Veteran Yogayakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/journal techno.v8i1.7342

Engineering geology or Geotechnical is the application of geological science in engineering practice for the purpose of ensuring that geological factors affecting the location, design, construction, operation and maintenance of engineering works have been properly identified and taken into account. Engineering geology research can be carried out during the planning, environmental impact analysis, civil engineering design, optimization engineering and construction stages of public and private projects, as well as in the post-construction and project investigation stages. Engineering geology research is carried out by a geologist or an educated engineering geologist, trained professionals and has the ability to recognize and analyze geological hazards and adverse geological conditions. The whole purpose is to protect life and property from damage as well as solutions to geological problems. Geological observations made in the form of geological structures in the form of joints and faults are very important parameters carried out in the planning stage of a development because it is very influential in the short, medium and long term stability of a civil building. Detailed measurements and mapping of the intensity level of geological structures will be able to assist engineering geologists in making recommendations for a civil construction project. Geological engineering study of the Ajibarang area and its surroundings, especially in the area of PT.development project crusher and conveyor. So that it will get good slope safety and can be used as the basis for the development of the crusher and conveyor at PT. Semen Bima.

STUDY OF GROWTH YIELD AND SEED QUALITY OF CUCUMBER (Cucumis sativus L.) ON BIOFERTILIZER AND LIQUID SMOKE FERTILIZER Pratama, Bayu Aji; Suryawati, Ami; Waluyo, Alif
Journal TECHNO Vol. 8 No. 1 (2022): Mei
Publisher : Universitas Pembangunan Nasional Veteran Yogayakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/journal techno.v8i1.7346

The application of biofertilizer and liquid smoke fertilizer is either method to increase the production of cucumber according to the environmentally friendly because it’s made from organic materials. The purpose of this research is to get the biofertilizer dose and the best concentration of the liquid smoke fertilizer to increase the growth and yield of fruit as well as the quality of seed cucumber. This research method is a field experiment that arranged by Completely Randomized Group Design (RAKL). The first factor is biofertilizer dose (P) that consist of 3 levels, that is: 5 ml/plant, 10 ml/plant and 15 ml/plant. The second factor is the concentration of the liquid smoke fertilizer (O) that consist of 3 levels that is: 1%, 2% and 3%. The control crops were fertilized according to the farmer’s habit of using NPK without biofertilizer and liquid smoke fertilizer treatment. The obtained data were analyzed by diversity analysis level 5%. To find out the significant differences between the control and the treatment, we did Contras Orthogonal Test level 5% and Duncan Multiple Distance Test level 5%. The result showed that the combination of treatment was significantly better than the control. There is an interaction between the dose of biofertilizer and concentration of liquid smoke on the vigor index parameter. The combination of P2O2 (biofertilizer 10 mL/plant and liquid smoke 2%) treatment is the best treatment on vigor index parameter. The best P2 (dose of biofertilizer 10 mL/plant) treatment was on the parameter of fruit weight per plant. O2 (concentration of liquid smoke 2%) treatment was best on the parameters of fruit weight per swath.

PERFORMANCE OF GROWTH AND YIELD CAYENNE PEPPER (Capsicum frutescens L.) WITH DOSAGE OF NPK AND MONOSODIUM GLUTAMATE (MSG) FERTILIZER Maryana, Maryana; Sumarwoto, Sumarwoto; Sipangkar, Silvana Delima
Journal TECHNO Vol. 8 No. 1 (2022): Mei
Publisher : Universitas Pembangunan Nasional Veteran Yogayakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/journal techno.v8i1.7348

The demand for cayenne pepper always increases every year along with the increase in population. To increase the yield of cayenne pepper, among others, through fertilization by giving doses of NPK and monosodium glutamate (MSG) fertilizers. The purpose of the study was to determine the best dose of NPK and MSG fertilizer on the growth and yield of cayenne pepper plants. The research was carried out at the Practical Garden of the Faculty of Agriculture, UPN "Veteran" Yogyakarta in August - December 2021. The study used a factorial completely randomized design with 4 replications. The first factor is the dose of NPK fertilizer with levels: NPK fertilizer dose of 1.5 g/plant, and 3.0 g/plant. The second factor with the level: monosodium glutamate dose includes no MSG 0 g/plant; 2.5 g/plant; 5.0 g/plant; and 7.5 g/plant. The results showed that there was no interaction between the dose of NPK fertilizer and monosodium glutamate (MSG) on the growth and yield of cayenne pepper. The dose of NPK fertilizer 3 g/plant and MSG 5 g/plant can provide the best growth and yield of cayenne pepper including number of leaves, number of fruit per plant, total number of fruit per plant and total fruit weight per plant.

EFFECT OF ACTIVATED ZEOLITE ON β-KAROTEN BLEACHED PALM OIL LEVELS Syazana, Tengku Auni; Zulkania, Ariany
Journal TECHNO Vol. 8 No. 1 (2022): Mei
Publisher : Universitas Pembangunan Nasional Veteran Yogayakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/journal techno.v8i1.7426

Palm oil is one of the Indonesian prima donna whose total national production is increasing every year. Palm oil can be used as a raw material for production of cooking oil products, industrial oil needs and energy sources. The base color of Crude Palm Oil (CPO) is due to the presence of a high β-carotene content in palm oil which can produce a red color in CPO. For this reason, it is necessary to bleach CPO. Most of the palm oil industry currently uses adsorbents as a pale material in the Bleaching process. This research does several things related to the process of making palm oil in general, the process is the production of adsorbents with activated adsorbents, removal of gum with H2SO4, bleaching process with adsorbents and analysis of bleaching oil (BPO). The experimental results show that zeolite can be used as an adsorbent for the bleaching process of palm oil. Zeolite has been activated by chemical methods using H2SO4 solution before being used as an adsorbent. From the experimental results, the best results for the application of β-carotene were obtained from 3% activated zeolite with 15% by weight zeolite.

Multiple Deformation of Jokotuwo Fault Zone, East Jiwo Hill, Bayat, Klaten, Central Java Rodhi, Achmad; Sutarto, Sutarto; Sutanto, Sutanto; Daryono, Sapto Kis
Journal TECHNO Vol. 8 No. 2 (2022): November
Publisher : Universitas Pembangunan Nasional Veteran Yogayakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/journal techno.v8i2.7527

Jokotuwo fault zone was first mentioned as the sinistral transpression Jokotuwo fault by Jatmika Setiawan (2002). The trending of fault zone can be traced on four directions. The first direction is ENE –WSW in northern part of Jokotuwo hill to Konang hill. The second direction is E – W in southern part of Jokotuwo hill to southern part of Semangu hill. The third direction is NNW – SSE in central part of Jokotuwo hill to Temas hill, and the fourth direction is NE – SW in central part Jokotuwo hill to Gunung Gajah hill. The fault zone area show evidence for four successive structure episodes. The first generation (D1) is deformation in northern part of Jokotuwo hill to the Rondonom hill. This zones is manifested by a variety of structures for well-developed mylonite foliations. The second generation (D2) is deformation in southern part of Jokotuwo hill to southern part of Semangu hill. This zone is manifested by shearing structure for cataclasite flow. The third generation (D3) is deformation in central part of Jokotuwo hill to Temas hill. This zone is manifested by a variety of structures, which may include drag folds, fault plane,and fault breccia. The fourth generation (D4) is deformation in central part of Jokotuwo hill to Gunung Gajah hill. This zone is manifested by a variety of structures, which may include fault plane, and fault breccias. The earliest structures in the Eastern Jiwo hill was generally showed that D1 structures are rotational and non-coaxial in semi-ductile character. The deformation was dextral thrusting involving WNW shortening with a significant component of thrust-parallel slip movement that continued into the Pra-Tertiary Orogeny. The D2 and D3 are rotational and non-coaxial in brittle character. The deformation were sinistral transpressive with a significant component of sinistral-strike slip movement that continued into the Tertiary Orogeny.

Geology And The Effect Of Boulder Size Concretion To Bauxite Laterite Deposit Quality At Djanra Area, Sandai District, Ketapang Regency, West Kalimantan Sutarto, Sutarto; Harjanto, Agus; Kurniawan, Paschalis Pindyka Aji
Journal TECHNO Vol. 8 No. 2 (2022): November
Publisher : Universitas Pembangunan Nasional Veteran Yogayakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/journal techno.v8i2.7528

The research area is located in Djanra areas Sandai District, Ketapang Regency, West Kalimantan. The research methods used are surface geological mapping, bauxite sample collection, also studio and laboratory analysis. Laboratory analysis includes petrographic analysis, XRF, and wet analysis. The geomorphology of the study area is dominated by denudational and anthropogenic landforms as a result of mining activities. The constituent rocks are Kerabai andesite units which are Middle-Late Cretaceous and are intruded by Sukadana trachyte units which are of Late Cretaceous period. The geological structures found are a shear joint with the main southwest-northeast direction and the normal right slip fault. Bauxite laterite deposits in the research area have varying overburden and ore thicknesses. Distribution of concretion size of boulder to depth in the study area varies. Based on the results of the study, the boulder size concretion can affect the quality of bauxite laterite deposits. Where on DJANRA-1 hill is declared feasible to be taken and mixed with smaller concretions because it meets quality standards.

Geology And Geological Models Of Nickel Laterite Deposit Gag Island, West Waigeo District, Raja Ampat Regency, West Papua Province Harjanto, Agus; Prasongko, Bambang Kuncoro; Santoso, Joko; Hadi, Waluyo; karlina, Nur Alif Yusuf Putra
Journal TECHNO Vol. 8 No. 2 (2022): November
Publisher : Universitas Pembangunan Nasional Veteran Yogayakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/journal techno.v8i2.8217

The location of the research is on Gag Island, West Waigeo District, Raja Ampat Regency, West Papua Province which is the area of PT. Nickel Gag. Based on the research flow chart, there are 3 main stages, namely data acquisition, data analysis, and synthesis. Physiography Gag Island is part of North Maluku (Northern Moluccas) which is included in the Raja Ampat Group. The drainage pattern found in the study area is the sub-dendritic alteration flow pattern (SDND). Geomorphology in the study area found denudational hills consisting of weak undulating hills D1, strong D2, and strongly eroded valleys D3. Lithology in the study area consists of 3 rock units, namely peridotite unit (Jp), dunite unit (Jd), and serpentinite unit (Js). The geological structure in the study area consists of the left horizontal fault of Gag 1 and 2, the right horizontal fault of Gag, paired joints, and veins. The geological model of Gag Island nickel laterite deposit consists of a bedrock model that affects the quality of nickel laterite deposits with a grade of 2-1.8% in harzburgite and dunite rocks; a slope model that affects laterite thickness with very gentle-slightly steep slopes >22 meters thick on harzburgite lithology; the geological structure model that influences the permeability of the bedrock with the presence of garnierite and chrysoprase mineralization in the fracture and help the leaching process. The exploration model is an application or application of a scientifically based geological model, besides that the exploration model is used as a command in finding exploration targets. Geological clues are used as an approach to search for nickel laterite deposits in the form of indications of flow patterns, geomorphology, lithology, geological structures, magmatogenic, and surrounding relationships.

Geology And The Correlation Between Geological Control And Nickel Quality In Gag Island, Raja Ampat Islands, West Papua Prasongko, Bambang Kuncoro; Harjanto, Agus; Askaria, Muhammad Ghifary
Journal TECHNO Vol. 8 No. 2 (2022): November
Publisher : Universitas Pembangunan Nasional Veteran Yogayakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/journal techno.v8i2.8218

The geology of Gag Island, Raja Ampat Islands, West Papua Province is composed of volcanic rocks and ultramafic rocks as carriers of laterite nickel deposits (Supriatna, et al. 1995). The research was conducted by surface mapping supported by drill data, and drill geochemical data. Data collection by surface mapping aims to determine the relationship of geological control to the quality of laterite nickel. The characteristics of laterite nickel deposits are influenced by geological factors in the form of lithology, topography, Drainage drainage, tectonics, and geological structures (Elias, 2002), so that geological control of the quality of laterite nickel deposits needs to be studied further.The research area found 3 rock units in the form of peridotite unit (harzburgite), serpentinite unit, and alluvial deposit unit. The data shows that the highest nickel content is in peridotite (harzburgite) units. In addition, the shape of the land based on the geomorphological aspect shows that in the form of weak wavy hills, laterite deposits are quite well developed and thick. The landform is supported by a relatively sloping slope (0-8 o ) with an undulating morphology and a dendritic Drainage pattern with a content of > 1.5% Ni and a thickness of 9-16 meters, while levels of < 1.5% Ni reach a thickness of 5-22 meters. The geological structure in the morphology is only found in the form of paired joints and filled joints. These joints become an important component in the process of garnierite mineralization as a carrier of Ni.

Turmeric Dryer (Curcuma domestica Valet) Using a Vacuum Oven Achmad, Zubaidi
Journal TECHNO Vol. 8 No. 2 (2022): November
Publisher : Universitas Pembangunan Nasional Veteran Yogayakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/journal techno.v8i2.8240

Turmeric (Curcuma domestica Valet), known as Curcuma longa, is a type of spice that is well known among Indonesians. Turmeric contains a variety of compounds such as curcumin, which is sensitive to high temperatures. It is possible to conduct further research to improve drying outputs based on the curcumin concentration in turmeric. This study aims to establish the optimum conditions for drying turmeric (Curcuma Domestica Valet) in a vacuum oven with variable such as pressure, temperature, and drying duration. This study uses turmeric that has been peeled, rinsed, thinly sliced, and weighed around 15 grams before being tested for water content and initial curcumin content. The turmeric is dried in a vacuum oven, and after one hour the dried turmeric is weighed and its water content and curcumin contents are analyzed. Based on the results of this study, the optimum condition for drying in a vacuum oven are at a pressure of 0,5013 Atm with a water content of 71,78% and a curcumin content of 1,54%, as well as at a temperature of 70 oC with a water content of 33,20% and a curcumin content of 2,64%.

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