ANALISIS PETROFISIKA DAN PERHITUNGAN VOLUMETRIK HIROKARBON FORMASI 2ND WALL CREEK DI LAPANGAN TEAPOT DOME CEKUNGAN POWDER RIVER, NATRONA COUNTRY, WYOMING, AMERIKA SERIKAT; PETROPHYSICAL ANALYSIS AND HYDROCARBON VOLUMETRIC CALCULATION 2ND WALL CREEK FORMATION IN TEAPOT DOME FIELD, POWDER RIVER BASIN, NATRONA COUNTRY, WYOMING, UNITED STATES

IRSYAD, MUHAMMAD, Sudarmaji

2016 | Skripsi | FMIPA

Stock tank gas initial in place (STGIIP) calculation based on petrophysical analysis results had been done for Teapot Dome field, 2nd Wall Creek formation, Powder River Basin. Petrophysical analysis of 8 wells was conducted to determine rock’s physical properties (such as shale volume, effective porosity, water saturation and permeability). The method used in this research was the deterministic using software Geolog 7. Shale volume was calculated using Gamma Ray log. Water saturation was calculated using Simandoux equation with parameters value of a : 1, m : 2 and n : 2. The result of this study shows that reservoir zones at “Teapot Dome” field can be classified as good quality reservoir. This classification was based on the average values of volume shale, porosity, and permeability. The total volume of Gas in Place which calculated in Teapot Dome is 45.46 BCF.

Kata Kunci : petrophysiscal analysis, reservoir properties, netpay, STGIIP