Drilling Engineering Assessment and Cost Analysis of Oil and Gas Wells Drilled in Onshore of Turkey

Yıl 2021, Cilt: 3 Sayı: 3, 235 - 243, 15.07.2021

Adil Ozdemır , Ahmet Gullu , Ergul Yasar Yildiray Palabıyık

Öz

Since the advanced technology used in oilwell drilling is difficult and costly, the drilling must be completed in the most appropriate conditions, in the shortest time, with cost-effective and the targeted depths and purposes. This requirement has further increased the importance of drilling optimization. There are many literature studies on this subject. In this study, the data of oil and gas wells drilled in onshore Turkey were evaluated by investigating the studies on drilling optimization. It is aimed to create a new source for the literature by statistical analysis. For this purpose, the reports of 470 oil and gas wells drilled in 1963 - 2021 in onshore Turkey have been analyzed. The well locations, their average well depths, drilling operation results, drilling times and costs, log and perforation operation costs, Drill Stem Test (DST) operation costs, acidizing operation costs, workover operation costs, cement costs, drill-bit types according to commonly used International Association of Drilling Contractors (IADC) codes for drilled formations, total costs and costs per meter for the oilwells have been evaluated.

Anahtar Kelimeler

Oilwell drilling, Drilling cost, Oilwell cost, Drilling optimization, Onshore Turkey

Kaynakça

• Akman, H., 1990. A new approach for selection of optimum casing setting depths. 8th Petroleum Congress of Turkey. April 18-20, Ankara, Turkey, 37-50 (in Turkish with English).
• Görgün, S., 2013. Efficiency and productivity analysis of the wells opened between 2008-2010 by Turkish Petroleum Corporation (MSc. Thesis). Gazi University (in Turkish).
• Gümüş, Ö., Altan, Y., 1995. History of Petroleum and Oilwells Drilled in Turkey. General Directorate of Petroleum Affairs of Turkey. 178 p. (Turkish - English).
• Ozdemir, A., 2016. Discoverable Oil and Gas Deposits of Turkey (History, Political and Strategic Adventure of Petroleum in Turkey). Volume 1 (in Turkish). It can be available at: https://www.researchgate.net/publication/328635001_Turkiye'nin_Kesfedilebilir_Petrol_ve_Dogalgaz_Yataklari-I_Turkiye'de_Petrolun_Tarihi_Siyasi_ve_Stratejik_Seruveni
• Toka, B., 2011. Well design in deep geothermal drilling and drill string selection for drill rigs. MTA Bulletin of Natural Resources and Economics 12, 40-54 (in Turkish).