STATIC THREE-DIMENSIONAL RESERVOIR MODELING AND ANALYSIS OF FACIES RELATION TO PETROPHYSICAL ROCK TYPE (PRT) ON RS-04 SANDSTONE RESERVOIR, MUTI FIELD, SANGASANGA BLOCK, KUTAI BASIN, EAST KALIMANTAN

• Main Author: GIGA SAKTI (NIM: 22014038), KURNIAWAN
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/22860
• Institution: Institut Teknologi Bandung

Muti Field is a gas field located on the eastern edge of East Kalimantan Island, <br /> <br /> <br /> <br /> which produces hydrocarbons in the RS-04 interval reservoir of Balikpapan Grub. <br /> <br /> <br /> <br /> The discovery of hydrocarbons at Muti Field began in 1982 and produced in 1991. <br /> <br /> <br /> <br /> Muti Field is currently in development stage. Thus, it requires a more <br /> <br /> <br /> <br /> comprehensive reservoir model for further development strategies. <br /> <br /> <br /> <br /> This study uses various data consisting of rock core data with a total length of <br /> <br /> <br /> <br /> 134.9 feet, 8 samples of thin incision, wire rope record data of 52 wells, and 3D <br /> <br /> <br /> <br /> seismic data. The first step in the research is to identify litofasies and facies <br /> <br /> <br /> <br /> associations to determine the deposition environment. Based on the analysis of <br /> <br /> <br /> <br /> core rock and electrophasies, the study area has three facies associations, <br /> <br /> <br /> <br /> including distributary channel, interdistibutary, and crevasse splay. <br /> <br /> <br /> <br /> Based on the results of core rock analysis, it is known that RS-04 sandstone <br /> <br /> <br /> <br /> reservoir belongs to the distributary channel facies and is composed of eight <br /> <br /> <br /> <br /> litofasies; Litofasies structureless medium – fine sandstone (Ssl), medium – fine <br /> <br /> <br /> <br /> planar cross lamination sandstone (Sp), biortubation very fine-medium sandstone <br /> <br /> <br /> <br /> (Sb), broad, shallow scour granules – medium sandstone (Ss), horizontal <br /> <br /> <br /> <br /> lamination very fine-medium sandstone (Sh), wavy lamination fine sandstone <br /> <br /> <br /> <br /> (Sw), Clay stone (Fl). <br /> <br /> <br /> <br /> Three-dimensional reservoir characterization performed through facies modeling, <br /> <br /> <br /> <br /> rock type, shale volume, porosity modeling, and permeability modeling. <br /> <br /> <br /> <br /> Sandstone distributary channel deposits in the study area can be divided into three <br /> <br /> <br /> <br /> rock type (RT); RT 1, RT 2, and RT 3, each rock type has a good porosity and <br /> <br /> <br /> <br /> permeability connection. In addition, it can be seen that a facies association may <br /> <br /> <br /> <br /> consist of several rock types and one rock type may be composed of several <br /> <br /> <br /> <br /> lithofasies in RS-04 sandstones.