What is well logging analysis?

Well logging involves a set of operations and techniques, from the acquisition, processing and interpretation of the physical properties of rock formations. A well log consists of records of variations in one of the physical properties of rock formations as a function of depth.

What is the purpose of well logging?

Well logging allows a detailed record of the geologic formations penetrated by a borehole. The log is based on physical measurements made by geophysical tools lowered into the hole. Historically, the first logging measurements consisted of basic electrical logs (resistivity) and spontaneous potential (SP) logs.

What is well logging methods?

Well Log Techniques: Well logging is the measurement of formation properties versus depth in a borehole. “Well logging, also known as wireline logging, is a method of data collection in the borehole environment which enables the determination of subsurface physical properties and reservoir parameters.

What is well log data analysis?

Abstract: Well log data analysis plays an important role in petroleum exploration. It is used to identify the potential for oil production at a given source and so forms the basis for the estimation of financial returns and economic benefits.

Why revision of basic well log analysis for geologists?

We all agreed that a revision of Basic Well Log Analysis for Geologists was in order, to capture the technological advancements in well logging that had been made since the book’s publication. George suggested that I start the revisions, to provide a different perspective on his original efforts.

How to get depth data from well logging jobs?

•A fundamental data from well logging jobs •Depth data has to be corrected for stretch in the cable, by the use of magnetic marks •Depth measured by the use of device, the data acquisition software is triggered by the depth signal, based on the specified sampling per foot.

What are the different types of well logs?

The well logs available are: GR (gamma ray), RDEV (deep resistivity), RMEV (shallow resistivity), RXO (flushed zone resistivity), RHOB (bulk density), NPHI (neutron porosity), PEF (photoelectric factor) and DT (sonic travel time). The petrophysical property that needs to be determined is Phi (porosity).