EVALUASI PENANGGULANGAN PROBLEM TOTAL LOSS PADA PEMBORAN TRAYEK 12 ¼ INCH SUMUR “SSS-01” LAPANGAN “GG”

SIBORO, ADITIA (2025) EVALUASI PENANGGULANGAN PROBLEM TOTAL LOSS PADA PEMBORAN TRAYEK 12 ¼ INCH SUMUR “SSS-01” LAPANGAN “GG”. Skripsi thesis, UPN Veteran Yogyakarta.

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Abstract

ABSTRAK
EVALUASI PENANGGULANGAN PROBLEM TOTAL LOSS
PADA PEMBORAN TRAYEK 12 ¼ INCH SUMUR “SSS-01”
LAPANGAN “GG”
Oleh
Aditia Siboro
NIM: 113190100
(Program Studi Sarjana Teknik Perminyakan)
Sumur “SSS-01” yang terletak di Lapangan “GG” merupakan sumur
pengembangan yang berada pada Cekungan Jawa Barat Utara. Sumur ini dibor
dengan total kedalaman 6921 ftTVD. Pada saat pemboran berlangsung, terjadi lost
circulation pada trayek 12 ¼” di kedalaman 3153 ftTVD sampai 4826 ftTVD
dengan tipe total loss menembus Formasi Parigi. Tidak ada aliran balik lumpur ke
permukaan dan tidak diketahuinya lithology batuan sampai ke trayek selanjutnya.
Analisa penyebab lost circulation dilakukan dengan menganalisa faktor tekanan
formasi (PPFG) dan faktor formation strength (UCS). Lost circulation diatasi
dengan metode blind drilling menggunakan fresh water. Evaluasi faktor hidrolik
dilakukan meliputi perhitungan tekanan pompa minimum, bottom hole circulating
pressure (BHCP), equivalent circulating density (ECD), dan evaluasi pada bit dan
annulus menggunakan metode BHI. Evaluasi pengangkatan cutting pada metode
blind drilling juga dilakukan guna mengetahui keefektifan dan keoptimalan metode
ini.
Berdasarkan perhitungan diketahui nilai tekanan formasi sebesar 1299,24 psi,
tekanan hidrostatik sebesar 1350 psi, dan nilai tekanan rekah formasi sebesar
1728,82 psi. Berdasarkan analisa disimpulkan bahwa penyebab dari lost circulation
bukan dari faktor tekanan formasi. Hasil perhitungan faktor formasi metode Tixier
menunjukkan loss terjadi akibat formasi yang tidak kompak. Hasil ini diperkuat
dengan data uniaxial comppresive strength yang memiliki trendline ke arah kanan
jika diplot terhadap kedalaman. Hasil perhitungan bit hydraulic impact sebesar
27,64% mengindikasikan tidak optimalnya daya yang digunakan pada bit. Hasil
perhitungan hidrolika pengangkatan cutting metode CTR sebesar 75,18% dan CCI
sebesar 0,48 mengindikasikan tidak optimalnya pengangkatan cutting saat metode
blind drilling.
Kata kunci: Bit Hydraulic Impact, Blind Drlling, Cutting Carrying Index, PPFG,
UCS.
vi
ABSTRACT
EVALUATION OF MITIGATION STRATEGIES FOR TOTAL
LOSS ISSUES IN THE DRILLING 12 ¼ INCH TRAJECTORY OF
WELL “SSS-01” IN THE “GG” FIELD.
By
Aditia Siboro
NIM: 113190100
(Petroleum Engineering Undergraduated Program)
The well 'SSS-01', located in the 'GG' Field, is a development well within the North
West Java Basin. This well was drilled to a total depth of 6921 ft TVD. During
drilling operations, lost circulation occurred in the 12 ¼-inch interval at depths
ranging from 3153 ft TVD to 4826 ft TVD, identified as a total loss that penetrated
the Parigi Formation.
An analysis of the causes of lost circulation was conducted by examining formation
pressure (PPFG) and formation strength factors (UCS). The lost circulation was
addressed using a blind drilling method with fresh water. Hydraulic evaluations
were performed, including calculations of minimum pump pressure, bottom hole
circulating pressure (BHCP), equivalent circulating density (ECD), and hydraulics
in the bit and annulus utilizing the Borehole Hydraulic Integrity (BHI) method. An
evaluation of cuttings lift during the blind drilling method was also be calculated
to determine the effectiveness and optimization of this approach.
From the calculations, it was determined that the formation pressure was 1299.24
psi, the hydrostatic pressure was 1350 psi, and the formation fracture pressure was
1728.82 psi. The analysis concluded that the cause of the lost circulation was not
due to formation pressure factors. Results from the Tixier method of formation
factor calculations indicated that the loss occurred due to the unconsolidated
charactheristic of the formation. This conclusion is supported by uniaxial
compressive strength data, which showed a rightward trend when plotted against
depth. The bit hydraulic impact calculation yielded a value of 27.64%, indicating
suboptimal power utilization at the bit. The hydraulic calculations for cuttings lift
during the CTR method yielded a value of 75.18%, and the Cutting Carrying Index
(CCI) was 0.48, suggesting suboptimal cuttings lift during blind drilling.
Keywords: Bit Hydraulic Impact, Blind Drilling, Cutting Carrying Index, PPFG,
UCS.
vii

Item Type:	Tugas Akhir (Skripsi)
Uncontrolled Keywords:	Bit Hydraulic Impact, Blind Drilling, Cutting Carrying Index, PPFG, UCS.
Subjek:	T Technology > T Technology (General)
Divisions:	Fakultas Teknologi Mineral dan Energi > (S1) Teknik Perminyakan
Depositing User:	Eko Yuli
Date Deposited:	21 Oct 2025 02:15
Last Modified:	21 Oct 2025 02:16
URI:	http://eprints.upnyk.ac.id/id/eprint/44630

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