Aside from our transportation system, a big part of our daily lives uses petroleum products made from oil which puts the oil industry on a very high scale. Various oil companies are willing to spend a very huge sum of amount that may reach up to billion dollars worth of money just to gain more and more earnings. Initially, raw oil is taken from oil wells and is extracted up using pipelines, tubes and other tools. But in order to achieve good class of oil and avoid sucking up sand, rocks and other unnecessary particles, few analytic and measurement techniques were developed and Wireline Logging is one of these. Author is an expert of wireline logging, go here for more interesting information.
WIRELINE LOGGING One of the analytic and measurement techniques used in oil wells for formation evaluation is the process called Wireline Logging. With Wireline Logging, continuous recording of data throughout the process of oil formation can be done. Different formation properties can be noted like electrical resistivity, induced and natural radioactivity, hydrogen content, elastic module and bulk density.
These data will then be interpreted to achieve continuous record of measurements in relations to the depth measurements. LOGGING PROCESS To obtain measurement records from deep oil wells, few steps or stages must be done:
• A sensory tool attached at the end of a logging cable will be lowered down the well.
• The sensor will then be suspended down the hole and signals from it will be conditioned in the down-hole electronics.
• Data signals will then be transmitted to the control panel through the cable and recording of data will then be done.
• Movement of the cable up and down the oil well will also activate a depth measuring device which data gathered by it will also be recorded.
• Finally, copies of the recorded data measurements called the well log will then be produced for evaluation.