Petroleum System of Malik oil Field, Sayun – Masila Basin,Yemen, Utilizing Well Logging Analysis

Abstract

The Sayun-Masila basin is one of the most prolific sedimentary basins in Yemen. It has attracted the attention of geologists and geophysicists for hydrocarbon prospection and exploration. The study area occupies the western part of the Sayun-Masila basin it lies between latitudes 15ﻩ 33′ 55" and15ﻩ 59′ 13" N and longitudes 47ﻩ 47′ 45" and 48ﻩ 12′ 00 E. The materials used in this study include The basic logging data are in the form of Gamma Ray (GR) thorium (Th), uraniu (U), potassium(K), potassium and thorium(kTh),Caliper, Deep and Shallow Laterolog resistivities (LLD, LLS), Micro-Spherically Focused log(MSFL), Photoelectric Absorption Index (PEF), and porosity tools (Density, Neutron and Sonic). encountered in 11 wells in the study Area, core analysis from Two wells and well velocity surveys as well as fourteen 2-D reflection seismic sections., Also, subsurface data are read in the form of lithostratigraphic information. The lithostrtigraphic succession consists of rock units ranging in age from Upper Jurassic to Recent. The oldest sediments rest unconformably on the basement rocks. Structurally, block (9) had been affected by normal faults trending NW-SE, NE-SW and E-W, and fault folds (anticlines and synclines). Tectonically, it reflects the breakup of Goundwana land, basin creation formed by rifting during Late Jurassic and Early Cretaceous and rifting of the Gulf of Aden and Red Sea throughout Tertiary age.