Oil well construction requires several casing string to reach a planned depth of a well therefore we will discuss about the basic of each casing string used in the oil wells.
In this article, we will cover the following strings;
Pressure under the earth is one of the most dangerous things that drilling personnel need to deal with. If the pressure does not take care properly, lost of the well can be occurred. Learning the basic about pressure control is very critical therefore we would like to share this valuable oilfield VDO regarding this topic. Additionally, full VDO transcript is provided for accelerate your learning. We wish you would enjoy watching and learning from it.
Basic Pressure Control In Drilling – Full VDO Transcript
Fluids in a formation are under pressure. When drilled, this pressure can escape to the surface if it is not controlled. Normally, drilling mud offsets formation pressure, that is the weight or pressure of the drilling mud keeps fluids in the formation from coming to the surface.
Retort analysis is the method to determine solid and liquid components in the drilling fluid. In this article, we will adapt mass balance and retort analysis data to determine solid density in the mud.
Mass balance for mud is listed below;
We can rearrange the Euqation#1 in order to determine the solid density
We’ve collected data from internet and summarized into simply formats for you to see oilfield salary in 2014. You will get an idea how much personnel working in the upstream industry make. All information used in this article is as of Q1 2014.
Africa Average Income = 105,568 USD/year
Australia & Oceania Average Income = 104,787 USD/year
Central Asia Average Income = 79,188 USD/year
Europe Average Income = 116,899 USD/year
Far East Average Income = 100,337 USD/year
Middle East Average Income = 79,813 USD/year
North America Average Income = 90,693 USD/year
South America Average Income = 88,297 USD/year
Southern Asia Average Income = 72,023 USD/year
The chart below demonstrates overall income based on geographical information.
Figure 1 – Average Income (USD/Yr) Based on Geographical Area as of Q1 2014
Coring is a special process to recover wellbore rock in the well.
Figure 1 – Core from the well. Credit – Wikipedia
This article will demonstrate how to calculate coring cost per footage recovered.
Coring cost per footage recovered is expressed below;
