Analysis of Pipe Lay Barge Hafar Neptune Capability in Pipelaying Operation at Offshore North West Java Oil and Gas Field

Ignasius Krisna Armanda, E. Djatmiko, Imam Rochani
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Abstract

When pipelaying activity is carried out, the most influential factor is the significant wave height. In this final project, the maximum significant wave height allowed for the PLB during the pipelaying process was analyzed with the variation of pipe diameters, which are 8 inches, 10 inches, and 12 inches; variations in the direction of coming waves namely 0, 45, 90, 135, and 180; and stinger angle variations. First, static analysis was performed using OFFPIPE software Then, Pipe Lay Barge (PLB) Hafar Neptune modelled with MOSES software and validated with ABS MODU codes. The output was RAO from the Hafar Neptune PLB. Next, dynamic analysis was performed with OFFPIPE software, where the input is static analysis, RAO of Pipe Lay Barge Hafar Neptune, and JONSWAP wave spectrum formulation. The result of the analysis was the significant wave height that could hit the PLB when pipelaying is 3 meters for all pipe diameter variations. For variations in the direction of the wave data, the maximum Hs were 3 meters for 0 ° and 180 °, 2.5 meters for 45 °, 1.5 meters for 90 ° and 135 °.
西北爪哇油气田铺管作业中铺管驳船Hafar Neptune能力分析
在进行铺管作业时,影响最大的因素是有效波高。在这个最终的项目中,分析了管道铺设过程中PLB允许的最大有效波高,以及管道直径的变化,分别为8英寸、10英寸和12英寸;来波方向的变化,即0、45、90、135和180;以及推力杆角度的变化。首先,使用OFFPIPE软件进行静态分析,然后使用MOSES软件对管道铺设驳船(PLB) Hafar Neptune进行建模,并使用ABS MODU代码进行验证。输出的RAO来自Hafar Neptune PLB。接下来,使用OFFPIPE软件进行动态分析,其中输入静态分析,管道铺设驳船Hafar Neptune的RAO和JONSWAP波谱公式。分析的结果是,在所有管径变化的情况下,管道铺设时可能到达PLB的显著波高为3米。对于波浪数据方向的变化,0°和180°时最大h为3米,45°时最大h为2.5米,90°和135°时最大h为1.5米。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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