Tuesday, September 1, 2015

Basic Logging Interpretation


Logging is one powerful method to measure physical properties of the formation around borehole to make sure whether we are lucky enough to drill through petroleum bearing zone!

 Logging is done by lowering a logging tool into the borehole and recording formation properties while the tools are rolled up to the surface. These logging tools can be divided into broad categories based on the physical properties measured. The tools use variety of sensors to measure different properties such as gamma ray, electrical, acoustic, radioactive responses, electromagnetic, pressure and other properties of the formation rock and fluid. Since the tools are rolled up to the surface while recording the data, the record could be seen continuously as a function of depth. These data will represent a lot of formation properties depend on what properties are the tools measure from the borehole. These data then should be interpreted to get its main goal: to know the condition of the formation and to decide whether the prediction of geologists about the petroleum potencies are right or wrong. That is why an accurate logging interpretation is very important to the life of Geologists, and other engineers who predict the hydrocarbon bearing zone. 

(By saying "logging" here I mean WIRELINE LOGGING, which is very common to be called as "logging", and not MUD LOGGING)


In this slide, we'll try to understand how the logging result could be achieved. After that, we will talk about the header of the picture, we'll see what kind of logging tools are usually used for every properties in the result. From the result, we'll discuss which location can be interpreted as petroleum bearing zone. And further more, we will see how from this simple picture we may find the petroleum reserve estimation.

You'll be amazed how a single picture may talks a lot of things! 

And you all can get my presentation FREE from the link below!!! It is very unique, full color, and you might learn about logging interpretation easier, also it will be very useful if you want to teach other about logging interpretation interestingly..


Irianto Petrus Binsardo

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