TRIWANTO, ALIP (2022) PERANCANGAN ULANG POMPA PROGRESSIVE CAVITY PUMP SUMUR ATR-17 DAN ATR-19 DI SHALLOW ZONE d/320 DAN b/400 STRUKTUR KAS LAPANGAN ATR. Masters thesis, UPN 'Veteran" Yogyakarta.
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Abstract
RINGKASAN
Struktur KAS merupakan salah satu struktur penghasil minyak di Lapangan
ATR dengan jumlah sumur penghasil minyak sebanyak 67 sumur dimana sebanyak
48 sumur diproduksikan menggunakan artificial lift berupa Progressive Cavity
Pump (PCP). Data hasil perawatan sumur selama periode tahun 2019 menunjukkan
bahwa dari 48 sumur PCP di Struktur KAS yang memiliki lifetime kurang dari 6
bulan sebanyak 25 %, memiliki lifetime 6-12 bulan sebanyak 23 % dan memiliki
lifetime diatas 12 bulan sebanyak 52 % populasi. Sumur ATR-17 diproduksikan
dari layer b/400 dan memiliki lifetime hanya 5 hari yang disebabkan oleh kerusakan
elastomer yang merupakan salah satu komponen utama pompa PCP. Sumur ATR�19 diproduksikan dari layer d/320 dengan lifetime rata-rata 46 hari yang disebabkan
oleh permasalahan berulang berupa tubing bocor. Rendahnya lifetime sumur
berdampak pada proses pengurasan minyak dan timbulnya biaya tambahan untuk
pekerjaan perawatan sumur. Oleh karena itu untuk menjawab permasalahan
tersebut dengan tetap memperhitungkan kaidah keteknikan yang baik (good
engineering practices) diperlukan perancangan ulang pompa PCP di Struktur KAS
Lapangan ATR.
Untuk mengetahui penyebab rendahnya lifetime sumur digunakan metodologi
penelitian dengan terlebih dahulu melakukan pengumpulan data berupa data
reservoir, data sifat fisik fluida, data teknis sumur, data test sumur dan data
perawatan sumur. Kemudian data tersebut dianalisa dan diolah untuk mengetahui
lifetime sumur PCP yang ada di Struktur KAS. Setelah itu dilakukan evaluasi
pompa eksisting dan dilakukan perancangan ulang berdasarkan data terbaru. Hasil
perancangan ulang diaplikasikan ke sumur ATR-17 dan ATR-19 kemudian
dilakukan perbandingan lifetime sumur.
Hasil dari penelitian ini diperoleh bahwa perancangan ulang pompa yang
dilakukan di sumur ATR-17 dengan kombinasi metode dengan mengurangi potensi
gesekan antara sucker rod dan tubing dan mengganti material tubing dengan bahan
yang lebih tahan dengan gesekan mekanis mampu mengatasi permasalahan tubing
bocor dimana hal ini terlihat dari lifetime sumur ATR-17 meningkat dari rata-rata
46 hari menjadi 15 bulan dengan total penghematan biaya sebesar Rp.
1.511.697.012. Sementara perancangan ulang yang dilakukan di Sumur ATR-19
dengan pemilihan elastomer yang tepat sesuai dengan rekomendasi elastomer
compatibilty test mampu mengatasi permasalahan kerusakan dini elastomer dimana
hal ini terlihat dari lifetime sumur ATR-19 meningkat dari 5 hari menjadi lebih dari
13 bulan dengan total penghematan biaya sebesar Rp. 4.124.249.222.
Kata kunci: progressive cavity pump, PCP, lifetime, perancangan ulang, pump
stuck, elastomer.
ABSTRACT
The KAS structure is one of the oil-producing structures in the ATR Field
with a total of 67 oil-producing wells of which 48 wells are produced using an
artificial lift Progressive Cavity Pump (PCP). The data on the results of well service
during the 2019 period show that of the 48 PCP wells in the KAS Structure that
have a lifetime of fewer than 6 months as much as 25%, have a lifetime of 6-12
months as much as 23% and have a lifetime above 12 months as much as 52% of
the population. The ATR-17 well is produced from layer b/400 and has a lifetime
of only 5 days caused by damage to the elastomer which is one of the main
components of the PCP pump. The ATR-19 well is produced from layer d/320 with
an average lifetime of 46 days caused by repeated problems in the form of leaking
tubing. The low life of the well has an impact on the oil draining process and the
emergence of additional costs for well maintenance work. Therefore, to answer
these problems while still taking into account good engineering practices, it is
necessary to redesign the PCP pump in the ATR Field KAS Structure
To find out the cause of the low life of the well, a research methodology was
used by first collecting data in the form of reservoir data, fluid physical properties
data, well technical data, well test data, and well service data. Then the data is
analyzed and processed to determine the lifetime of the PCP wells in the KAS
Structure. After that, an evaluation of the existing pump was carried out and a
redesign was carried out based on the latest data. The results of the redesign were
applied to the ATR-17 and ATR-19 wells and then a comparison of the lifetime of
the wells was carried out.
The results of this study obtained that the pump redesign carried out in the
ATR-17 well with a combination of methods by reducing the potential for friction
between the sucker rod and tubing and replacing the tubing material with a material
that is more resistant to mechanical friction can overcome the problem of leaking
tubing where this can be seen from the lifetime ATR-17 wells increased from an
average of 46 days to 15 months with a total cost savings of Rp. 1,511,697,012.
While the redesign carried out at the ATR-19 well with the selection of the right
elastomer following the elastomer compatibility test recommendations was able to
overcome the problem of premature elastomer damage where this can be seen from
the lifetime of the ATR-19 well which increased from 5 days to more than 13
months with total cost savings. of Rp. 4,124,249,222.
Keywords: progressive cavity pump, PCP, lifetime, redesign, pump stuck,
elastomer.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | progressive cavity pump, PCP, lifetime, redesign, pump stuck, elastomer. |
| Subjek: | T Technology > T Technology (General) |
| Divisions: | x. Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Eko Yuli |
| Date Deposited: | 08 Dec 2022 01:31 |
| Last Modified: | 08 Dec 2022 01:31 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/31844 |
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