HAIDAR, ARISA GUMIRA (2024) KAJIAN TEKNIS PROBLEM CHANNELING DENGAN CARA SQUEEZE CEMENTING PADA SUMUR “AGH-01” DI LAPANGAN “GMR”. Other thesis, UPN Veteran Yogyajarta.
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Abstract
vii
RINGKASAN
KAJIAN TEKNIS PROBLEM CHANNELING DENGAN CARA
SQUEEZE CEMENTING PADA SUMUR “AGH-01” DI
LAPANGAN “GMR”
Oleh
Arisa Gumira Haidar
NIM: 113190131
(Program Studi Sarjana Teknik Perminyakan)
Sumur “AGH-01” merupakan sumur directional yang berproduksi secara
natural flow dan memiliki problem multilayer channeling. Problem tersebut
diketahui berdasarkan analisa chan’s diagnostic plot. Pada analisa production
performance, diperoleh produksi minyak terakhir sebelum dilakukan workover
sebesar 77.6 BOPD, produksi air 482 BWPD dan didapatkan %WC (water cut)
sebesar 86%. Nilai water cut tinggi disebabkan karena multilayer channeling di
dekat zona perforasi. Maka dilakukan salah satu kegiatan workover yaitu operasi
squeeze cementing. Tujuan dilakukannya squeeze cementing ini untuk
memperbaiki bonding cement didekat zona perforasi yang merupakan penyebab
naiknya produksi air dan selanjutnya reperforasi dengan interval baru untuk
memaksimalkan interval zona produktif Sumur “AGH-01”.
Metodologi yang digunakan dalam pengerjaan skripsi ini yaitu
menganalisa produksi air dengan data produksi untuk mengidentifikasi problem
apa yang terjadi pada sumur tersebut menggunakan chan’s diagnostic plot.
Setelah itu dilakukan validasi dengan data ALFA (acoustic leak flow analyzer)
log untuk menemukan dimana letak problem yang terjadi.
Pelaksanaan squeeze cementing dilakukan pada interval perforasi 1639 –
1641.8 mMD dengan metode bradenhead dengan teknik hesitation menggunakan
tekanan low pressure squeeze cementing. Total slurry cement yang digunakan
sebanyak 6 bbl. Berdasarkan evaluasi dari hasil pekerjaan squeeze cementing,
dilakukan analisa kuantitatif pada kedalaman 1639 – 1641.8 m didapatkan nilai
amplitudo sebesar 5.5 mv, nilai CS sebesar 1025 psi dan Bond Index sebesar 1.74
yang menunjukkan good bonding cement. Kemudian penentuan perforasi baru
dilakukan dengan analisa Open Hole log dihasilkan interval yang lebih pendek
pada kedalaman 1639.5 – 1640.5 mMD dan dengan panjang interval perforasi
sebesar 1 m.
Kata Kunci : Squeeze Cementing, Chan’s Diagnostic Plot, ALFA Log
viii
ABSTRACT
TECHNICAL STUDY OF CHANNELING PROBLEM BY
SQUEEZE CEMENTING OF AGH-01 WELL AT GUMIRA
FIELD
By
Arisa Gumira Haidar
NIM: 113190131
(Petroleum Engineering Ungraduated Program)
The "AGH-01" well is a directional well that produces natural flow and
has a multilayer channeling problem. This problem was identified based on
Chan's diagnostic plot analysis. In the production performance analysis, the final
oil production before the workover was carried out was 77.6 BOPD, water
production was 482 BWPD and the %WC (water cut) was 86%. The high water
cut value is caused by multilayer channeling near the perforation zone. So one of
the workover activities was carried out, namely the squeeze cementing operation.
The purpose of this squeeze cementing is to repair the bonding cement near the
perforation zone which is the cause of the increase in water production and then
reperforate at a new interval to maximize the productive zone interval of the
"AGH-01" well.
The methodology used in working on this thesis is analyzing water
production with production data to identify problems that occur in the well using
Chan's diagnostic plot. After that, validation is carried out using ALFA (acoustic
leak flow analyzer) log data to find where the problem is.
Squeeze cementing was carried out at a perforation interval of 1639 –
1641.8 mMD using the Bradenhead method with a hesitation technique using low
pressure squeeze cementing pressure. The total slurry cement used was 6 bbl.
Based on the evaluation of the results of the squeeze cementing work, a
quantitative analysis was carried out at a depth of 1639 – 1641.8 m, obtaining an
amplitude value of 5.5 mv, a CS value of 1025 psi and a Bond Index of 1.74 which
indicates good bonding cement. Then the determination of new perforations was
carried out using Open Hole log analysis resulting in shorter intervals at a depth
of 1639.5 – 1640.5 mMD and with a perforation interval length of 1 m.
Keywords: Squeeze Cementing, Chan's Diagnostic Plot, ALFA log.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Squeeze Cementing, Chan's Diagnostic Plot, ALFA log. |
| Subjects: | T Technology > T Technology (General) |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Eko Yuli |
| Date Deposited: | 01 Mar 2024 02:38 |
| Last Modified: | 01 Mar 2024 02:38 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/39006 |
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