ADITOMO, IWAN (2023) EVALUASI 5 SUMUR ELECTRIC SUBMERSIBLE PUMP (ESP) UNTUK PERENCANAAN KONVERSI LIFTING DARI ELECTRIC SUBMERSIBLE PUMP (ESP) MENJADI GAS LIFT DAN JARINGAN INJEKSI GAS LIFT DI LAPANGAN TMO. Masters thesis, UPN "Veteran" Yogyajarta.
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Abstract
vii
ABSTRAK
5 sumur ESP di lapangan TMO yang berada di Cluster U & V sering
mengalami Gas Lock yang berujung terjadinya Downhole Problem yang
mengharuskan dilakukan pekerjaan workover untuk penggantian ESP. Oleh karena itu
perlu dilakukan analisa terhadap ESP eksisting yang sedang beroperasi dan
kemungkinan dilakukannya konversi terhadap Artificial Lift yang lebih handal.
Evaluasi terhadap ESP eksisting menunjukkan secara nodal analysis real
produksi gross masih di bawah 40% dari AOFP, kondisi 5 ESP tersebut yang
beroperasi tidak optimum dikarenakan terkena interference gas. Efektifitas
penggunaan Gas Separator dan AGH (Advance Gas Handler) yang terpasang pada
rangkaian ESP jika di hitung dengan analisa metode Turpin menunjukkan 5 ESP
tersebut memiliki nilai <1% dengan nilai % gas bebas masih diatas 10%, ini
menunjukkan ESP tidak mampu mengatasi gas terproduksi dengan baik. Bisa
pemilihan kriteria Artificial Lift sesuai data primer dan sekunder yang dimiliki pada
permukaan dan bawah permukaan, secara teknikal Gas Lift mampu beroperasi dalam
kondisi GOR tinggi dan kondisi reservoir distruktur TMO ini.
Perencanaan gas lift pada 5 sumur TMO menggunakan simulator produksi
yaitu PIPESIM, pada simulasi model sumuran dilakukan sensitivitas terhadap laju gas
dan tekanan injeksi gas, yang menghasilkan nilai optimum dari DIP (Depth Injection
point) mencapai kedalaman 5400 ft dan fluida produksi di kisaran 180-290 BLPD.
Hasil simulasi didapatkan tekanan injeksi optimum di 600 psi dan laju gas 0.3-0.4
mmscfd, didapatkan DIP di kedalaman 5494 ft, dan jumlah katub sebanyak 8-9 buah
mandrel valve ditambah 1 buah Operating Valve. Simulasi jaringan injeksi gas lift
menunjukkan pipa 2 inci dengan schedule 40 mampu mengalirkan gas hingga ke
sumur dengan tekanan sebesar 600-605 psi. Penggunaan gas lift memberikan forecast
selama 5 tahun kumulatif minyak sebesar 226 MSTB dan 9.2 BSCF, dengan nilai
investasi sebesar Rp. 26,516,744,436, yang secara keekonomian memberikan NPV
sebesar 23,336 MUSD dan POT 1.37 tahun, disamping itu secara operasional gas lift
lebih aman dan lifetime pompa akan lebih lama karena tidak terpengaruh gassy.
Kata kunci: ESP, Gas Lift, simulator produksi, perencanaan
viii
ABSTRACT
5 ESP wells in the TMO field located in Cluster U & V often experience Gas
Lock which results in a Downhole Problem which requires workover work to be
carried out to replace the ESP. Therefore it is necessary to analyze the existing ESP
in operation and the possibility of converting it to a more reliable Artificial Lift.
Evaluation of the existing ESP shows that from a nodal analysis real gross
production is still below 40% of AOFP, the operating conditions of these 5 ESPs are
not optimum due to interference gas. The effectiveness of using the Gas Separator and
AGH (Advance Gas Handler) installed in the ESP circuit if calculated by the Turpin
method analysis shows that the 5 ESPs have a value of <1% with a % free gas value
still above 10%, this shows that ESP is unable to handle the gas produced well. You
can select the Artificial Lift criteria according to the primary and secondary data you
have on the surface and subsurface, technically the Gas Lift is able to operate in high
GOR conditions and reservoir conditions in this TMO structure.
Gas lift planning on 5 TMO wells uses a production simulator, namely
PIPESIM, in the simulation of the well model sensitivity is carried out on gas rate and
gas injection pressure, resulting in an optimum value of DIP (Depth Injection point)
reaching a depth of 5400 ft and fluid production in the range of 180-290 BLPD. The
simulation results obtained optimum injection pressure at 600 psi and gas rate of 0.3-
0.4 mmscfd, DIP was obtained at a depth of 5494 ft, and the number of valves was 8-
9 mandrel valves plus 1 Operating Valve. Simulation of the gas lift injection network
shows that a 2-inch pipe with schedule 40 is capable of delivering gas to the well with
a pressure of 600-605 psi. The use of gas lifts provides a forecast for 5 years of
cumulative oil of 226 MSTB and 9.2 BSCF, with an investment value of Rp.
26,516,744,436, which economically provides an NPV of 23,336 MUSD and a POT of
1.37 years, besides that, operationally the gas lift is safer and the pump lifetime will
be longer because it is not affected by gassy.
Keywords: ESP, Gas Lift, production simulator, design
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | ESP, Gas Lift, production simulator, design |
| Subjects: | T Technology > T Technology (General) |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Eko Yuli |
| Date Deposited: | 16 Aug 2023 02:20 |
| Last Modified: | 16 Aug 2023 02:20 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/36902 |
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