Check(s): Comments: BOP Control Unit pressures & leaks: Check pressures of accumulator (3000 PSI), manifold (1500 PSI) and annular (between 700 and 1500PSI subject to ‘requirements’). Check air pressure to air pumps (125 PSI). Look and listen for any leaks of air or oil. Remove the two inspection caps from the reservoir and look along ... Read more The post Well Control On Rigs: 15 – Checks & Tests appeared first on Drilling Manual ..read more

The casing pipe is mandatory in drilling operations as it has a lot of casing functions to prevent cave-in of unconsolidated formations, isolate problem zones, and many more. As mentioned before in our casing design guide, the selection of casing depends on many factors. Here in this article, we shall learn everything about the best ... Read more The post Casing Running Procedures Good Practice appeared first on Drilling Manual ..read more

Drill string design Calculations are made to help you select items from a list of ready-made Drill string components, not deciding what an individual component will look like. The objectives of our design efforts should be to: This Article covers simple drill string design steps for vertical and directional wells. Loads applied by tension, torsion, combined ... Read more The post Drill String Design Calculation Steps appeared first on Drilling Manual ..read more

The first step in drill string design is designing a Bottom Hole Assembly (BHA). The BHA comprises various components that work together to enable drilling engineers to achieve their drilling targets. Designing a BHA involves several critical steps that drilling engineers must consider to ensure that the drilling operation is safe, efficient, and successful. In ... Read more The post BHA Design For Oil & Gas Wells appeared first on Drilling Manual ..read more

Drilling slips exert hoop compression on the Drill Pipe which can deform the pipe in unfavorable conditions. This article will teach the drill pipe slip crushing formula and calculations. Slip Crushing Constant A unit tensile stress St from hanging weight will result in a hoop stress Sh that is a function of many factors such as slip length, ... Read more The post Slip Crushing Formula & Calculations For Drill Pipe appeared first on Drilling Manual ..read more

In general, we can define the burst pressure in a drill pipe as the differential pressure acting across the drill pipe wall due to an internal pressure greater than the external pressure. In this article, we shall discuss the drill pipe burst pressure formula and calculations used in drill string design. How To Consider Burst ... Read more The post Drill Pipe Burst Pressure Calculation & Rating appeared first on Drilling Manual ..read more

The Drill Pipe may sometimes be subjected to external pressure, which is higher than the internal pressure. This condition usually occurs during drill stem testing and may collapse the drill pipe. The differential pressure  (external pressure minus internal pressure) required to produce collapse is calculated for various sizes and grades of new and used drill pipe ... Read more The post Drill Pipes Collapse Pressure Formula & Tables appeared first on Drilling Manual ..read more

To select the proper drill collar for the bottom hole assembly, we should understand what is the drill collar specifications. Generally, drill collars are identified by the following parameters: Drill Collar Sizes The hole size and bit program will determine the best drill collar size, but the collars selected usually have the largest OD and ... Read more The post Drill Collar Specifications appeared first on Drilling Manual ..read more

A drill collar is an essential tool used in oil and gas rigs for drilling operations. It has many functions, including providing weight on the drilling bit for efficient drilling and stability during operation. Understanding the importance of drill collars and how they work is vital for successful drilling operations. In this article, we will ... Read more The post What Is Drill Collar In Oil & Gas Industry appeared first on Drilling Manual ..read more

We can define the drill string as a group of pipes and accessories on which the drill bit is run to the bottom of the borehole. These components allow us to deliver the rotation, the weight, and the fluids from the surface to the bottom of the drilled hole. It is an important part of ... Read more The post Drill String Components Guide In Oil & Gas appeared first on Drilling Manual ..read more