During drilling operations, many valuable data can be obtained from drilling and geological
parameters collected from Mud logging unit to support formation evaluation. Field data will help wellsite geologists, petro-physicists and reservoir engineers to study and evaluate drilled reservoir based on formation gases detected while drilling. This study discusses real examples from explorations wells that have recently been drilled in Bahrah Field (North Kuwait). Gas Chromatograph measurements were recorded while drilling through Cretaceous formations to evaluate hydrocarbon content and reservoir potential. The gas analysis was performed by using high resolution quantitative gas chromatographs data from Methane C1 to Pentane C5 including their isomers. The data was collected from the reservoir sections of BH-A well and compared with wireline data to determine well productivity and to identify the best well production design.
The integration of the mud gas data along with the drilling parameters (ROP, mudflow, ect.) has been utilized to determine the rock properties such as porosity and permeability, this approach can extend the value of gas data not only for formation evaluation and fluid characterization but also for formation petro-physical evaluation by identifying the saturation, fluid characters and determine reservoir economic potential.
Mud gas data along with other formation evaluation logs can be integrated to define a better well placement and design while drilling as well as for better future formation evaluation operations planning to minimize cost of well delivery and efficiently lift resources utilization.
This type of methodology represents a real case study conducted in south Kuwait thought artificial intelligence on geological data and downhole formation evaluation logs.
Kuwait is located in the Northeastern part of the Arabian Peninsula, within the Arabian-Iranian basin. (Abdallah F.H 2005). The study area The Bahrah field is a relatively under-explored basin in North Kuwait. (Figure. 1). The present study is based on the data supplied by Kuwait Oil Company (KOC). The data used in the present study is Gas Data and wireline data were obtained from exploration well BH-A. The type of well logs available includes the following (Caliper, Resistivity, SP, GR, Density and Neutron). Then further analyzed for the hydrocarbon ratios through HC-Vision™. In addition, the integration was done by using geological software Techlog.
