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 …
The system used for closing the BOP’s is a high-pressure hydraulic fluid accumulator unit. Hydraulic fluid is stored under pressure, the pressure being provided by stored nitrogen. When hydraulic oil is forced into the accumulator by a small volume, high-pressure pump, the nitrogen is compressed, storing potential energy. When the BOP’s are activated the pressured …
A Blowout Preventer (BOP) Control System as one of the drilling rig components, is a high-pressure hydraulic power unit fitted with directional control valves to safely control well kicks and prevent blowouts during drilling operations. A typical system offers a wide variety of equipment to meet the customer’s specific operational and economic criteria. The following …
Drilling engineers play a crucial role in the petroleum industry, designing and creating efficient drilling projects. To complete projects, a drilling engineer must comprehensively understand engineering principles. Daily, an engineer oversees all aspects of a drilling project, from the initial planning stages to execution and completion. This includes determining daily costs, managing mobile drilling units, …
In general, the neutral point can be defined as the point in the drill string where there is a change from tension to compression in the axial stress or the point that is zero tension and zero compression. The location of this neutral point depends on WOB and the Bf buoyancy factor (that depends on …
Pre-job Requirements Pre-job Requirements An operating company wishing to use a Measurement While Drilling system must first decide: Where several different tools meet all the job requirements, some operators have a deliberate policy of trying out all the different systems to assess reliability and cost-effectiveness (check also oil well drilling well cost per foot). The …
All MWD sensors used in the downhole tool must be rugged enough to withstand the harsh environment. Only one of the systems currently available has the facility to change out damaged components (sensor package/electronics) without tripping the whole bottom hole assembly out of the hole. The failure of one sensor may not necessarily mean that …
All the Measurement While Drilling MWD systems commercially available is based on some form of mud pulse telemetry. Although several different companies in oil and gas field offer MWD services, there are certain similarities among the systems being used. The major components of the MWD tools mud pulse telemetry system are shown in Fig. 1. …