ARRAHMAN, NARENDRA (2025) EVALUASI OPERASIONAL REMEDIAL SQUEEZE CEMENTING GUNA PERBAIKAN PRIMARY CEMENTING PADA SUMUR “LOM-06” LAPANGAN “PTR”. Skripsi thesis, UPN Veteran Yogyakarta.
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Abstract
ABSTRAK
EVALUASI OPERASIONAL REMEDIAL SQUEEZE
CEMENTING GUNA PERBAIKAN PRIMARY CEMENTING
PADA SUMUR “LOM-06” LAPANGAN “PTR”
Oleh
Narendra Arrahman
NIM: 113210121
Program Studi Sarjana Teknik Perminyakan
Penyemenan merupakan tahap kritis dalam operasi pemboran sumur minyak dan
gas, berfungsi untuk mengisolasi zona, menstabilkan casing, dan menjaga integritas
sumur. Kualitas penyemenan dinilai menggunakan Cement bond log (CBL) dan
Variable density log (VDL), yang mengukur kekuatan ikatan semen-casing serta
mendeteksi kebocoran. Pada Sumur LOM-06, analisis CBL/VDL menunjukkan
indikasi free pipe pada interval 1127–1137 m, ditandai dengan amplitudo CBL
rendah (36–48 mV) dan pola VDL yang didominasi sinyal casing. Kondisi ini
mengindikasikan ikatan semen yang buruk, berpotensi menyebabkan kebocoran
fluida dan mengganggu produksi, terutama di zona produktif 1130–1134 m.
Untuk memperbaiki masalah tersebut, dilakukan remedial squeeze cementing
dengan metode balance plug, meliputi perhitungan volume semen, tekanan
hidrostatis, dan tekanan maksimum pompa guna memastikan keamanan formasi.
Hasil perhitungan menunjukkan kebutuhan 11,4 bbl cement slurry (36 sak semen)
dengan spacer dan displacement fluid masing-masing 3,08 bbl, 0,57 bbl, dan 19,5
bbl dan ketinggian puncak kolom semen setinggi 1082 m. Tekanan squeeze yang
diterapkan (1500 psi) berada di bawah tekanan rekah formasi (3207 psi), sehingga
proses berlangsung aman tanpa merusak formasi.
Setelah semua proses penyemenan sudah selesai, dilakukan pressure test casing
pada kedalaman 1032 m dengan tekanan 300 psi selama 5 menit, menunjukkan hasil
yang baik. Uji drill out pada interval 1127–1137 m juga mengonfirmasi
keberhasilan perbaikan ikatan semen tanpa perlu penyemenan ulang. Dengan
demikian, pekerjaan remedial squeeze cementing berhasil memulihkan isolasi zona
dan meningkatkan integritas sumur.
Kata kunci: Penyemenan Sumur, Log CBL-VDL, Remedial Squeeze cementing,
Tekanan Squeeze
vi
ABSTRACT
OPERATIONAL EVALUATION OF REMEDIAL SQUEEZE
CEMENTING FOR IMPROVUNG PRIMARY CEMENTING IN
WELL “LOM-06”, “PTR” FIELD
By
Narendra Arrahman
NIM: 113210121
Petroleum Engineering Undergraduated Program
Cementing serves as a critical phase in oil and gas well drilling operations,
functioning to isolate zones, stabilize casing, and maintain well integrity. Cement
bond quality is evaluated using Cement bond log (CBL) and Variable density log
(VDL), which measure cement-to-casing bond strength and detect potential leaks.
In Well LOM-06, CBL/VDL analysis indicated free pipe conditions across the 1127
1137 m interval, characterized by low CBL amplitude (36-48 mV) and VDL patterns
dominated by casing signals. This condition suggested poor cement BONDING that
could potentially lead to fluid migration and production interference, particularly
in the productive zone at 1130-1134 m.
To address this issue, remedial squeeze cementing was performed using the balance
plug method, involving calculations of cement volume, hydrostatic pressure, and
maximum pump pressure to ensure formation safety. The calculations determined
a requirement of 11,4 bbl of cement slurry (36 sacks) with 3.08 bbl spacer ahead,
0.57 bbl spacer behind, and 18.9 bbl displacement fluid and The height of the top
of the cement column is 1082 meters.. The applied squeeze pressure (1500 psi)
remained below the formation breakdown pressure (3207 psi), ensuring a safe
operation without formation damage.
Following cementing operations, a casing pressure test was conducted at 1032 m
depth with 300 psi pressure for 5 minutes, yielding positive results. Subsequent
drill-out testing across the 1127-1137 m interval confirmed successful cement bond
restoration without requiring re-cementing. The remedial squeeze cementing
operation effectively restored zonal isolation and enhanced well integrity.
Keywords: Well Cementing, CBL-VDL Log, Remedial Squeeze cementing, Squeeze
cementing
vii
| Item Type: | Tugas Akhir (Skripsi) |
|---|---|
| Uncontrolled Keywords: | Penyemenan Sumur, Log CBL-VDL, Remedial Squeeze cementing, Tekanan Squeeze |
| Subjek: | T Technology > T Technology (General) |
| Divisions: | Fakultas Teknologi Mineral dan Energi > (S1) Teknik Perminyakan |
| Depositing User: | Eko Yuli |
| Date Deposited: | 21 Oct 2025 01:39 |
| Last Modified: | 21 Oct 2025 01:39 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/44613 |
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