Determination of Formation Temperature

This report was written to present a study to determine formation
temperature. It will be divided into three main sections which are introduction,
literature review and methodology. In the introduction, the author will discuss the
background of study, problem statement, objectives, relevancy and feasibility of
the study. In the literature review, the author will state the studies done in the past
and related to this study. Lastly, the author will explain on how this study will be
conducted in the methodology. Raw bottom-hole temperature (BHT) measured
during drill-stem test on oil and gas wells are usually lower than the true formation
temperature. There are several factors affecting the readings of formation
temperature such as the circulation time of drilling mud, flow of formation fluid
and thermal conductivities. There are a lot of studies done in the past to correct the
raw BHT. This study will have a review on those studies and focus on developing
a program that will yields the corrected formation temperature for each depth, if
given elapsed time between the drilling stop, raw BHT and mud-circulation time,
by using Visual Basic 6.0. Based on this study, the Effective Cooling Method had
been identified as the most suitable method to be used.