Pemanfaatan Data Batimetri dan Backscatter Dalam Proses Identifikasi Potensi Geohazard Pada Tahap Drilling

Noer, Kayla Rashieka (2024) Pemanfaatan Data Batimetri dan Backscatter Dalam Proses Identifikasi Potensi Geohazard Pada Tahap Drilling. Diploma thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Kebutuhan masyarakat Indonesia akan suplai energi dalam beberapa tahun terakhir mengalami peningkatan, sehingga proses produksi hidrokarbon semakin gencar dilaksanakan guna memenuhi kebutuhan tersebut. Hal tersebut mendorong peningkatan dalam eksplorasi hidrokarbon. Eksplorasi di darat maupun di laut tidak menjadi penghambat proses untuk mendapatkan hidrokarbon yang dicari, keduanya tidak terbebaskan dari adanya geohazard. Penelitian ini dilakukan untuk mengetahui kondisi kedalaman, fitur dasar laut yang berpotensi sebagai geohazard, distribusi sedimen, serta memberikan rekomendasi untuk pemilihan jalur Jack Up Rig di wilayah studi di perairan Tenggara Provinsi Sumatera Selatan melalui survei geophysical menggunakan tiga alat pengukuran akustik, yaitu Singlebeam Echosounder, Multibeam Echosounder, dan Side Scan Sonar. Dari penelitian ini, didapatkan bahwa kedalaman dasar laut bervariasi antara 22 m sampai dengan 23,9 m dengan morfologi hampir rata dan kemiringan lokal antara 0° sampai dengan 2°. Fitur utama yang teridentifikasi meliputi pipa terekspos, jejak kaki jack up rig, spud can drag scar, dan seabed scar. Distribusi sedimen menunjukkan dominasi lempung bertekstur lunak. Dari seluruh hasil analisis, disarankan agar Jack Up Rig melakukan rig entry melalui sisi Timur Laut – Timur dari platform untuk menghindari bahaya geohazard seperti pipa terekspos dan subsea cables, serta gugusan seabed scars, guna mengurangi potensi kecelakaan dan meningkatkan keselamatan operasional.Dengan menggunakan pembobotan yang dikombinasikan dengan nilai kemiringan lereng dan keberadaan fitur dasar laut yang berpotensi sebagai geohazard, maka direkomendasikan agar Jack Up Rig melakukan proses rig entry melalui sisi Timur Laut – Timur dari platform untuk menghindari bahaya geohazard seperti pipa terekspos dan subsea cables, serta gugusan seabed scars, guna mengurangi potensi kecelakaan dan meningkatkan keselamatan operasional.

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The Indonesian people's need for energy supply has increased in recent years, so the hydrocarbon production process has been intensified to meet these needs. This has led to an increase in hydrocarbon exploration. Exploration on land or at sea is not an obstacle to the process of obtaining the hydrocarbons sought, both are not free from the presence of geohazards. This study was conducted to determine the depth conditions, seabed features that have the potential to become geohazards, sediment distribution, and provide recommendations for the selection of Jack Up Rig lines in the study area in the Southeast waters of South Sumatra Province through a geophysical survey using three acoustic measurement tools, namely Singlebeam Echosounder, Multibeam Echosounder, and Side Scan Sonar. From this study, it was found that the seabed depth varied from 22 m to 23.9 m with a nearly flat morphology and local slope between 0° and 2°. The main features identified include exposed pipes, jack up rig footprints, spud can drag scar, and seabed scar. Sediment distribution showed a predominance of soft-textured clays. From all analysis results, it is recommended that the jack up rig perform rig entry through the Northeast-East side of the platform to avoid geohazards such as exposed pipelines and subsea cables, as well as clusters of seabed scars, in order to reduce potential accidents and improve operational safety. Using the weighting combined with the slope value and the presence of seabed features as potential geohazards, it is recommended that the Jack Up Rig perform rig entry through the Northeast - East side of the platform to avoid geohazard hazards such as exposed pipelines and subsea cables, as well as clusters of seabed scars, in order to reduce the potential for accidents and improve operational safety.

Item Type:	Thesis (Diploma)
Uncontrolled Keywords:	Geohazard, Jack Up Rig, Seabed, Bathymetry, Seafloor Feature, Geohazard, Jack Up Rig, Seabed, Batimetri, Fitur Dasar Laut
Subjects:	G Geography. Anthropology. Recreation > G Geography (General) G Geography. Anthropology. Recreation > GB Physical geography G Geography. Anthropology. Recreation > GC Oceanography G Geography. Anthropology. Recreation > GE Environmental Sciences Q Science > QE Geology
Divisions:	Faculty of Civil, Environmental, and Geo Engineering > Geomatics Engineering > 29202-(S1) Undergraduate Theses
Depositing User:	Kayla Rashieka Noer
Date Deposited:	31 Jul 2024 04:12
Last Modified:	31 Jul 2024 04:12
URI:	http://repository.its.ac.id/id/eprint/109985

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