DRILLING THROUGH AN INTERBEDDED SAND-SHALE SEQUENCED HETEROLITHIC RESERVOIR: MANAGING KICKS AND LOSSES

• Main Author: ZulFadhli Putra Haji Ya’akub, Haji Muhammad
• Format: Thesis
• Language: English
• Published: 2012
• Online Access: http://utpedia.utp.edu.my/3466/1/Hj_Muhammad_ZulFadhli_Putra_Hj_Ya%E2%80%99akub.pdf; http://utpedia.utp.edu.my/3466/

The drilling of a heterolithic reservoir is considered to be one of the most difficult challenges in the drilling industry due to its unpredictable nature especially when it comes to the exploration phase as with the lack of information, most of the time there will be issues encountered as the characteristic of the reservoir and this study involves two wells that are geologically similar characteristics but one well has a number of issues encountered such as kicks and losses but the other has no recorded issues with the reservoir. Different factors can come into play which could pose as a problem but one important element is the drilling fluid used in the operation will be compared for any potential material sag. Without any proper maintenance or if the incorrect type of drilling fluid used, this can lead to complications during drilling and this report is made to understand the nature and the issues that could be encountered when drilling a heterolithic reservoir, the drilling fluid properties that were used between the two wells and a possible recommendation in weighting material use.