The well Abandonment process is a necessary operation on oil & gas wells in certain circumstances, such as dry wells and wells, which will be completed later. In this article, we shall explain the standard procedures for doing well plugging and abandonment in oil and gas wells. Note : This procedures are to be a …
The trajectory of a deviated well must be carefully planned so that the most efficient trajectory is used to drill between the rig and the target location and ensure that the well is drilled for the least amount of money possible. Here we shall understand what is the Depth and Geographical Reference Systems When planning, …
Well planning in oil and gas is the process of turning a reservoir objective into a well that can be drilled, pressure-controlled, cased, evaluated, and ultimately completed. A workable plan must show not only where the well will go, but also why the proposed trajectory, casing seats, mud system, and rig can handle the anticipated …
Definitions Ellipsoid is the name of the volume obtained when an ellipse is rotated about one of its axes. Specifically, an oblate spheroid is an ellipse rotated about the shorter (semi-minor) axis. The Earth is not an exact ellipsoid, and deviations from this shape are continually evaluated. The curvature of the Earth’s surface is not …
Sedimentary rock types Terrigenous sediments (clastic) These are land derived sediments sub-divided further on the basis of their grain size. Clay 1- Clay minerals are hydrous platy aluminosilicates. 2- Clay minerals can be subdivided into five important groups with different chemical and physical characteristics; kaolinite, illites, smectites, chlorites and glauconites. 3- “shale”, generally used to …