scholarly journals Identification of the geological structure on the NPR Geothermal Area based on 3D Modeling Gravity Data

2019 ◽  
Vol 1217 ◽  
pp. 012043
Author(s):  
N P Rizaldi ◽  
R Dewi ◽  
R D Indriana ◽  
U Harmoko
Keyword(s):  
3D Modeling ◽  
Gravity Data ◽  
Geological Structure ◽  
Geothermal Area

scholarly journals Gravity Anomaly in Kelud, Kasinan-Songgoriti, and Arjuno-Welirang Volcano Hosted Geothermal Area, East Java, Indonesia

2020 ◽  
Vol 9 (3S) ◽  
pp. 172-176
Keyword(s):  
Data Analysis ◽  
Gravity Anomaly ◽  
3D Modeling ◽  
Gravity Data ◽  
Bouguer Anomaly ◽  
Geothermal Area ◽  
Geothermal Systems ◽  
Free Air ◽  
Relationship Of ◽  
The Relationship

This study aims to determine the relationship of heat reservoirs in the Kelud, Kasinan-Songgoriti, and Arjuno-Welirang geothermal systems based on gravity data analysis. Gravity data are obtained from Geodetic Satellite (GEOSAT) and European Remote Sensing-1 (ERS-1) Satellite which have been corrected to free air correction. The result of gravity data analysis is in the form of a complete Bouguer anomaly which represents the gravity anomaly below the surface. The results of the complete Bouguer anomaly value obtained were -15,238 mGal to 86,087 mGal. Based on these results, regional anomalies and residual anomalies will be separated to determine the depth of the two anomalies. 3D modeling was carried out based on the complete Bouguer anomaly data to determine the reservoir relationships in the Kelud, Kasinan-Songgoriti, and Arjuno-Welirang geothermal systems.

scholarly journals Interpretation of Subsurface Fault Through Multi-Level Second Vertical Derivative Gravitational Data in Bittuang Geothermal Working Area, South Sulawesi, Indonesia

2021 ◽  
Vol 6 (4) ◽  
pp. 184-191
Author(s):  
Ullil Gunadi Putra ◽  
William Jhanesta ◽  
Iskandarsyah
Keyword(s):  
Gravity Data ◽  
Geological Structure ◽  
Horizontal Gradient ◽  
Geothermal Area ◽  
Vertical Derivative ◽  
Existing Structures ◽  
South Sulawesi ◽  
Exploration Drilling ◽  
Multi Level ◽  
The Government

The research was conducted in Bittuang, Tana Toraja Regency, South Sulawesi Province, as one of the geothermal prospect areas and targets for the initial stage of the Government exploration drilling program for the 2020-2024 period. One aspect of geothermal is the manifestation control structure as a fluid migration path from below the surface. Therefore, identification of existing structures in the Bittuang geothermal area was carried out and confirmed the surface geological structure contained in the Bittuang geothermal geological map. In determining the presence of a fault and knowing its characteristics such as the type of fault, the direction of the dip, and the magnitude of the dip of the fault, the gravity data is processed using the multi-level second vertical derivative (ML-SVD) method. To strengthen the interpretation, the results from the ML-SVD were matched with the data from the horizontal gradient (HG) method and the geological data of the structure of the study area. From this process, there are 27 faults in the Bittuang geothermal area, two of which are indicated as controlling faults for the manifestation of the Balla group and the Cepeng group. This research is expected to describe faults in the Bittuang geothermal area, which can support detailed exploration activities.

ANALISIS MODEL 3D DATA GAYA BERAT DALAM KEGAGALAN PEMBORAN SUMUR RESERVOAR MINYAK DI AREA X

2020 ◽  
Vol 2 (2) ◽  
pp. 62-68
Author(s):  
Ahmad Jahrudin ◽  
Pradityo Riyadi
Keyword(s):  
3D Modeling ◽  
3D Model ◽  
Oil And Gas ◽  
Gravity Data ◽  
Production Well ◽  
Log Data ◽  
3D Data ◽  
Area X

The exploration of oil and gas, especially in Indonesia is experiencing various challenges and varying degrees of difficulty. In this research, the researcher tries to make a 3D modeling from gravity data, where the model will show a structure to determine the central coordinates for drilling. Pertamina has carried out drilling at a location in NTT and it turns out that the well does not produce oil and gas, even though the log data reads an oil showing that the area should have the prospect of producing oil, but the wells that have been drilled do not show any oil or gas, therefore the researchers tried to make a 3D model determine the structure around the production well. In this research, it was seen that the area of the previous drilling point had deviated from the top of the up dome and it was also seen in this structure that the area was deviated by about 3 kilometers and depth must exceed 526 m, the researcher concluded that the drilling point must be at X, Y coordinates.

scholarly journals Efficient Use of Satellite Gravity Anomalies for mapping the Great Sumatran Fault in Aceh Province

2019 ◽  
Vol 9 (02) ◽  
pp. 61
Author(s):  
Muhammad Yanis ◽  
Marwan Marwan ◽  
Nazli Ismail
Keyword(s):  
Gravity Data ◽  
Gravity Anomalies ◽  
Geological Structure ◽  
Geological Mapping ◽  
Capital City ◽  
Satellite Gravity ◽  
Alluvial Deposits ◽  
The North ◽  
Aceh Province ◽  
Tilt Derivative

<p>Gravity Satellite has been widely used in tectonic studies and regional of geological mapping. The Satellite Gravity data are provided free by Scripps Institution of Oceanography, University of California San Diego. The data are acquired by GEOSAT and ERS-1 satellites with a 1.5 km resolution for one pixel. For a further application, the tilt derivative analytic technique was used in order to enhance linear trends of the geological structure revealed by the Bouguer anomalies. The method is represented by the value of an angle between the total horizontal and vertical derivative from the gravity data. The results show that the tilt derivative calculation has been able to map clearly some geological structures on the north of Sumatra i.e., the Aceh and the Seulimeuem segments, as well as some local faults around them. On the other hand, Banda Aceh as the capital city of Aceh Province and Pidie District is dominated by positive values of the tilt derivative anomalies. The data coincide with geological maps of both areas where they are covered by alluvial deposits. Based on the result, it can be concluded that the tilt derivative method is potentially used for quick interpretation of the satellite gravity data.</p>

scholarly journals Review and Evaluate the Geological Structure Using Gravity Data-Case Study

2019 ◽  
Vol 13 (12) ◽  
pp. 701-703
Author(s):  
Asghar Teymoorian ◽  
Hamidrezasamadi .
Keyword(s):  
Gravity Data ◽  
Geological Structure

scholarly journals Euler deconvolution of gravity data in Geothermal Reconnaissance; the Obama geothermal area, Japan

2006 ◽  
Vol 59 (3) ◽  
pp. 275-282 ◽  
Author(s):  
Hakim Saibi ◽  
Jun Nishijima ◽  
Essam Aboud ◽  
Sachio Ehara
Keyword(s):  
Gravity Data ◽  
Geothermal Area ◽  
Euler Deconvolution
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