Frequently Asked Questions

The articles below have been writen and contributed to by a number of sources including Task Geoscience team members and people throughout the geoscience industry. We would like to thank all the writers who contributed and all the companies and organisation which provided data.

What is the definition of geoscience?

Earth science (also known as geoscience, the geosciences or the Earth Sciences), is an all-embracing term for the sciences related to the planet Earth. It is arguably a special case in planetary science, the Earth being the only known life-bearing planet. There are both reductionist and holistic approaches to Earth science. The major historic disciplines use physics, geology, geography, meteorology, mathematics, chemistry and biology to build a quantitative understanding of the principal areas or spheres of the Earth system.

What is the definition of wireline?

The term wireline usually refers to a cabling technology used by operators of oil and gas wells to lower equipment into the well for the purposes of a well intervention. In its simplest and most used form, the wireline simply consists of a single strand of metal wire most commonly 0.108" or 0.125" in diameter (sometimes referred to as slickline). In other cases, the wire will be composed of braided strands, rendering it stronger and heavier (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 (called electric line or E-line) and provides a pathway for electrical telemetry for communication between equipment at each end of the cable. The first use of wireline in a wellbore was as a measuring device. Measuring systems using rope or flat section steel tape, were over time replaced by wire.

What is the definition of sedimentology?

Sedimentology encompasses the study of modern sediments and understanding the processes that deposit them. It also compares these observations to studies of ancient sedimentary rocks. Sedimentologists apply their understanding of modern processes to historically formed sedimentary rocks, allowing them to understand how they formed. Sedimentary rocks cover most of the Earth's surface, record much of the Earth's history, and harbor the fossil record. Sedimentology is closely linked to stratigraphy, the study of the physical and temporal relationships between rock layers or strata.

Who are Task GeoScience?

Task Geoscience is an independent geological consultancy providing data processing, borehole interpretation and reservoir modelling services to the Oil & Gas industry. Task specialise in the analysis and integration of core, borehole image, dipmeter and wireline log data.

What is borehole bias?

Borehole bias is the under-sampling of planar orientations that are not orthogonal to the wellbore axis.