PENINGKATAN PERHITUNGAN BEBAN PERFORATED LINER DALAM SUMUR PRODUKSI GEOTERMAL
Integrity of perforated liner in geothermal production well is very crucial and must be designed properly according to standard. The currently available geothermal standard, such as New Zealand Standard, NZS2403:2015, provides a general but less detail on perforated liner system design consideration...
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| Format: | Final Project |
| Language: | Indonesia |
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| Online Access: | https://digilib.itb.ac.id/gdl/view/66453 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Integrity of perforated liner in geothermal production well is very crucial and must be designed properly according to standard. The currently available geothermal standard, such as New Zealand Standard, NZS2403:2015, provides a general but less detail on perforated liner system design considerations (Marbun, et al., 2021).
The purpose of this study is to improve the limitations of NZS2403:2015 by performing dynamic loads calculation and evaluation on perforated liner during four phases: borehole drilling and liner installation, flow testing, stand-alone production, and production during injection operation. In this study, data collected from TM9 production well and TM9A injection well from Indonesia’s Y Field were used. The yield strength of perforated liner changed in each phase, and load mechanism varied at 1.3-2.7 and 1.6-4.6 times respectively from the actual perforated liner burst and collapse, leading to the failure of perforated liner and reduction of its service life. The calculation results, combined with the substantial decrease of production and the failure of production casing, indicated the failure of the perforated liner. This result also pointed the appropriate time to revise operation at later phase and to conduct appropriate maintenance according to the perforated liner actual condition. Moreover, this study could be used as basis for well design and operations related to the perforated liner in the future (Marbun, et al., 2021). |
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