RUMA, STEFANUS DWIYANTORO (2024) STUDI EFEKTIVITAS ALAT DOG LEG REAMER SEBAGAI SOLUSI LEDGES BOREHOLE PADA TRAYEK 12 ¼” SUMUR DIRECTIONAL DRILLING LAPANGAN “SDR”. Other thesis, UPN "Veteran" Yogyakarta.
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Abstract
The SR-11 well encountered obstacles to drilling operations in section 12 ¼” 
caused by poor or smooth borehole geometry due to the formation of ledges on the 
surface of the borehole wall that can hinder drilling operations such as tripping 
and casing installation activities. Therefore, there is a considerable increase in the 
cost of drilling operations from the planned cost. 
The completion method used in this study is to evaluate the drilling results through 
reading the drilling report data and calculating the costs required in drilling 
planning. Then a solution is used by using Dog Leg Reamer in overcoming 
obstacles in drilling the next wells by selecting through the costs required in its use. 
Reevaluation of the drilling results that have used the Dog Leg Reamer is carried 
out. 
Based on the results of the research conducted, the cost of tripping and casing 
installation activities at the “SR-11” well amounted to Rp 2.742.840.000,00. In the 
SR-12, SR-13, and SR-14 wells, the Dog Leg Reamer was used as a solution to 
obstacles in drilling activities. The cost of the drilling results in the tripping and 
casing installation activities of the “SR-12”, “SR-13”, and “SR-14” wells was 
found to be Rp 1.162.900.000, Rp 1.283.200.000,  and Rp 1,090,720,000.  With the 
calculation of the difference in costs required in the four wells, it was concluded 
that drilling with the Dog Leg Reamer was successfully used. 
Keywords: pipe sticking, drilling cost, reamer, ledges.
| Item Type: | Thesis (Other) | 
|---|---|
| Uncontrolled Keywords: | pipe sticking, drilling cost, reamer, ledges. | 
| Subjek: | T Technology > T Technology (General) | 
| Divisions: | x. Faculty of Engineering, Science and Mathematics > School of Geography | 
| Depositing User: | Indah Lestari | 
| Date Deposited: | 05 Mar 2025 02:03 | 
| Last Modified: | 05 Mar 2025 02:03 | 
| URI: | http://eprints.upnyk.ac.id/id/eprint/42187 | 
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