Analisis Kekuatan Struktur Minimum Facilities Wellhead Platform Terhadap Tabrakan Crane Barge Pada Tahap Instalasi Kompresor Tambahan

Bukhari, Muhammad Hammam (2023) Analisis Kekuatan Struktur Minimum Facilities Wellhead Platform Terhadap Tabrakan Crane Barge Pada Tahap Instalasi Kompresor Tambahan. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Sesuai dengan visi-misi SKK Migas yaitu “Menuju 1 juta barrel per hari pada tahun 2030”, operator yang memiliki Kontrak Kerja Sama (KKS) terus melakukan eksplorasi serta peningkatan produksi baik di sumur baru maupun existing. Salah satunya melalui minimum facilities wellhead platform yang terletak di SMK field yang akan melakukan peningkatan kapasitas produksi dengan menambahkan kompresor tambahan. Kompresor tambahan tersebut akan terletak di struktur tambahan yang akan diinstalasi di bagian luar dari topside. Struktur tambahan kompresor tersebut akan diinstalasi menggunakan crane barge, sehingga terdapat kemungkinan tabrakan antara crane barge dengan minimum facilities wellhead platform. Analisis tabrakan antara jacket platform dengan crane barge, dihitung berdasarkan kalkulasi kecepatan tabrakan dari beban lingkungan serta codes DNV RP C-204. Selain kecepatan tabrakan, analisis ini juga dihitung berdasarkan arah tabrakan serta lokasi tabrakan, yaitu tabrakan pada jacket leg (arah 45o dan 135o) dan boat landing (arah 60o, 90o, dan 120o). Analisis dilakukan menggunakan perangkat lunak berbasis metode elemen hingga melalui sub-module static ship impact. Analisis tersebut menghasilkan bahwa member yang mengalami deformasi terbesar yaitu jacket leg akibat arah tabrakan 135o yaitu sebesar 25,09 cm maka member tersebut dianggap sebagai member kritis yang akan dilakukan analisis local. Analisis local dilakukan pada jacket leg dengan beban tabrakan sebesar 6709,7 kN pada arah X dan arah Y. Analisis local tersebut menghasilkan tegangan yang terjadi pada member jacket leg sebesar 819,97 MPa, serta mengalami deformasi elemen sebesar 14,097 mm. Struktur jacket leg yang terkena tabrakan crane barge mengalami ovalitas sebesar 83,47%
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In accordance with the vision and mission of SKK Migas, namely "Towards 1 million barrels per day in 2030", operators who have Production Sharing Contracts (PSC) continue to explore and increase production in both new and existing wells. One way is through the minimum wellhead platform facility located in the SMK field which will increase production capacity by adding additional compressors. The additional compressor will be located in the additional structure which will be installed on the outside of the topside. The additional compressor structure will be installed using a crane barge, so there is a possibility of collision between the crane barge and the minimum wellhead platform facility. The collision analysis between the jacket platform and the crane barge is calculated based on the calculation of the collision speed from environmental loads and the DNV RP C-204 code. In addition to the collision speed, this analysis is also calculated based on the direction collision and the location of the collision, namely the collision on the jacket leg (direction 45o and 135o) and the landing of the ship (direction 60o, 90o and 120o). Analysis was performed using finite element method software through the static ship impact sub-module. This analysis resulted in the member experiencing the greatest deformation, namely the jacket leg due to the collision direction of 135o, which is 25.09 cm, so this member is considered a critical member which will be analyzed locally. Local analysis was carried out on the jacket leg with a collision load of 6709.7 kN in the X and Y directions. The local analysis resulted in the stress occurring on the jacket leg member of 819.97 MPa, and the element deformed by 14,097 mm. The jacket leg structure that was impact by a crane barge collision experienced an ovality of 83.47%

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Minimum Facilities Wellhead Platform, Ship Impact, Extension Compressor, Deformasi, Analisis Lokal Minimum Facilities Wellhead Platform, Ship Impact, Extension Compressor, Deformation, Local Analysis
Subjects:	T Technology > TC Hydraulic engineering. Ocean engineering > TC1680 Offshore structures
Divisions:	Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User:	Muhammad Hammam Bukhari
Date Deposited:	20 Jan 2023 07:37
Last Modified:	20 Jan 2023 07:37
URI:	http://repository.its.ac.id/id/eprint/95540

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