ANALOGUE STUDY OF BASEMENT FRACTURED RESERVOIRS IN KOTOPANJANG AREA, CENTRAL SUMATRA

摘要

Field investigation is done to characterize fracture system in Kotopanjang Area. After acquisition of data in the field, we compare all of fracture properties statistically to analyze about damage zone, fractures orientation, find high/low strain zone, and relative age of fractures set.rnScanline method is used to gather fracture attributes. In this method, we register all of fracture/fault attributes along observation lines.rnMeasurement and analysis a number of fracture attributes in Kotopanjang area conclude that distribution of fracture oriented at N ± 210° E and N ± 255° E. Fractures set are fold and fault related fractured controlled by reverse right slip fault with trend N 335° E and NE-SW anticline. General fractures pattern are parallel an or form acute angle to bedding N 190 - 210° E. Fractures distribution is divided into six damage zone and three high strain zone with mean of fractures 5.67, 5.22, and 4.21 per meters. The data shows that older fractures less scattered with orientation N 192° E, N 168° E, N 11° E. Younger fractures have shorter length and more scattered strike.