How Do Wirelines and Slicklines Work?

Tools inserted in to the well for both workover and logging efforts, wirelines and slicklines are very similar devices. While a slickline is a thin cable introduced into a well to deliver and retrieve tools downhole, a wireline is an electrical cable used to lower tools into and transmit data about the conditions of the wellbore. Usually consisting of braided cables, wirelines are used to perform wireline logging, as well.

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How Does Logging-While-Drilling (LWD) Work?

For centuries, drillers (whether drilling for oil or water) have been keeping keen notes of drilling activities. What started as a regular record of drilling depth versus cuttings observed (also known as mud logging) has transformed to encompass various technological well logging measurements, including electric logging, SP, induction and GR. Most recently, scientists and engineers have developed Logging-While-Drilling (LWD), a type of well logging that incorporates the logging tools into the drill string, administering, interpreting and transmitting real-time formation measurements to the surface.

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Slickline, Braided Line, and E- Line by Paul Rone-Clarke

Slickline – single strand wire that is made of Mild steel. Sizes range from 0.072” to >0.125.”
Braided Line – multiple strand wire braided to form a single cable that is also non-Conducting.
Electric Line (E-Line) – this is a multiple stand wire armor cable around a single insulated electrical conductor wire. Specialty cable – many forms of multiple conductor wires in armored or insulated cable.
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