Analisis Respon Dinamis Lazy Wave Flexible Riser Dengan Variasi Posisi SPM Terhadap PLEM Pada Kondisi Operasi

Hawari, Muhammad Naufal (2021) Analisis Respon Dinamis Lazy Wave Flexible Riser Dengan Variasi Posisi SPM Terhadap PLEM Pada Kondisi Operasi. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Meningkatnya penggunaan flexible riser dalam proyek eksplorasi minyak dan gas merupakan tantangan besar bagi para insinyur untuk merancang sistem riser yang lebih baik untuk lebih meningkatkan efisiensi dan keselamatan kegiatan eksplorasi dan produksi di lapangan migas lepas pantai. SPM sering digunakan sebagai fasilitas offloading yang menghubungkan FSO atau FPSO sebagai penerima produk migas dari subsea template atau subsea well. Dalam kondisi operasi, SPM dapat bergerak bebas mengikuti pergerakan beban lingkungan. Drifting atau perubahan posisi akibat beban pada SPM dapat mengancam respon riser, dimana respon riser dapat berbeda apakah SPM bergerak atau drifting dalam respon tegangan atau lenturnya. Hasil dalam penelitian ini juga memuat pengaruh fenomena ini terhadap umur kelelahan mereka. Hasilnya, perbedaan respon riser akibat jarak SPM ke PLEM adalah, semakin jauh jarak SPM dari PLEM, semakin besar respon tegangan dan radius bending yang dimilikinya. Umur kelelahan juga mengikuti hasil yang sama, dimana jarak terjauh konfigurasi SPM ke PLEM memiliki umur kelelahan paling rendah dibandingkan dengan jarak terdekat konfigurasi SPM ke PLEM, dengan umur kelelahan tertinggi pada 128.31 tahun dan terendah pada 124.78 tahun.
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The increasing use of flexible risers in oil and gas exploration projects is a big challenge for engineers to design better riser systems to further improve the efficiency and safety of exploration and production activities in offshore oil and gas fields. SPM is often used as an offloading facility that connects FSO or FPSO as recipients of oil and gas products from subsea templates or subsea wells. Under operating conditions, SPM can move freely following the movement of environmental loads. Drifting or changes in position due to the load on the SPM can threaten the riser response, where the riser response can be different whether the SPM is moving or drifting in its stress or bending response. The results in this study also contain the effect of this phenomenon on their fatigue life. As a result, the difference in riser response due to the distance from SPM to PLEM is, the farther the distance from SPM from PLEM, the greater the stress response and bending radius it has. Fatigue life also follows the same results, where the farthest distance from the SPM configuration to PLEM has the lowest fatigue life compared to the closest distance from the SPM to PLEM configuration, with the highest fatigue life at 128.31 years and the lowest at 124.78 years.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Flexible Riser, SPM, Offset, Operasi, Analisa Kelelahan, Flexible Riser, SPM, Offset, Operation, Fatigue 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 Naufal Hawari
Date Deposited:	14 Aug 2021 02:00
Last Modified:	14 Aug 2021 02:00
URI:	http://repository.its.ac.id/id/eprint/86492

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