The whipstock is an old directional drilling tool that is used today primarily to perform well sidetracking out of the casing. Whipstocks and jetting techniques of various types were the principal deflection tools for many years before turbine-type and positive-displacement mud motors were fully developed and made economical for drilling applications. A whipstock is a …
The Importance of Drilling Bit Selection Optimum ROP and Durability Drilling Bit selection commonly involves choosing a bit that offers the right balance between durability and Rate of Penetration. We cannot get the maximum penetration rate and durability in one bit. The right balance between the two will yield an Optimum ROP and Optimum Durability for …
Drilling with Any of the casing types & casing liners is not new. It was routine practice in some shallow fields between 50 and 60 years ago to attach a drilling bit to a small-diameter production string, drill a few hundred feet, and leave it on the bottom once total depth was reached. Outside that …
Geosteering is “the drilling of a horizontal or other deviated well, where decisions on well path adjustment are made based on real-time geologic and reservoir data. In conventional directional drilling, the well path is steered according to a predetermined geometric plan. The objective is to follow the line as closely as possible. Geosteering is a …
The oil and gas companies have integrated into today’s energy marketplace. They have contributed to augmenting the global economy worldwide. These corporative firms play a significant role in providing cost-effective and high-quality fuel sources to ameliorate the living standards of society. The Covid-19 pandemic has dramatically mitigated the supply of oil and gas reserves in …
It will be recalled that the upward velocity of the mud in the annulus between the drill pipe and the wall of the hole is an important consideration with the function of drilling fluid of removing drilling cuttings. The usual expression of this annular velocity is in feet per minute. Annular Velocity Calculations & Formula …
The non-magnetic drill collar is made from specially treated steel alloys so that it does not affect magnetic surveying instruments. They aim to isolate directional survey instruments from magnetic distortion due to the steel drill string. Non Magnetic Drill Collar Function The magnetic survey instrument is influenced by the presence of a magnetic field around …
This is one of the types of casing with connections that can be run through the conventional casing (or other expandable casing) and then expanded to a larger diameter than a conventional casing run through that same size pipe. While this is a relatively new technology, it has seen some good success in numerous applications. …
Kill sheets are used to calculate the mud weight, mud quantities, and pumping times required to bring a well back to primary control after a gas kick. A description of how to complete kill sheets will be discussed in this article. The kill sheet is a printed form that contains blank spaces for recording information …
In this article, we will discuss the practical right steps for the single-stage primary casing cementing job procedure in oil and gas wells. We have also discussed the multi-stage cementing job in one of our articles before. And we have summarized the important tips for successful primary cementing & Casing Cementing calculations to assist you …