What does "e-line" mean when measuring the water table?

Question

I can't find what "eline" actually stands for, and how it works. I have done it, and understand the basics, but need more. Any help would be greatly appreciated!

Answer 1

It is also known as "electric line", or "wireline" measuring.

The term wireline usually refers to a cabling technology used by operators of oil and gas wells to lower equipment or measurement devices into the well for the purposes of well intervention and reservoir evaluation.

In its simplest form, the wireline simply consists of a single strand of metal wire most commonly 0.108" or 0.125" in diameter, which is often referred to as slickline. In other cases, the wire is composed of braided strands, rendering it stronger and heavier, which is called braided line. Braided line can contain an inner core of insulated wires which provide power to equipment located at the end of the cable, normally referred to as electric line, and provides a pathway for electrical telemetry for communication between the surface and equipment at the end of the cable.

Electric line

Electric line is the common term for the utilization of a armored, insulated conductor cable used to conduct current to downhole tools, typically used for well logging. Electric line can be subdivided into open hole operations and cased hole operations.

Open hole operations, or reservoir evaluation, involves the deployment of tools into a freshly drilled well. As the toolstring traverses the wellbore, the individual tools gather information about the surrounding formations. A typical open hole log will have information about the density, porosity, permeability, lithology, presence of hydrocarbons, and oil and water saturation.

Cased hole operations, or production optimization, focuses of the optimization of the completed oil well through mechanical services and logging technologies. At this point in the well's life, the well is encased in steel pipe, cemented into the well bore and may or may not be producing. A typical cased hole log may show cement quality, production information, formation data. Mechanical services uses jet perforating guns, setting tools, and dump bailors to optimize the flow of hydrocarbons.