## Drill String Design Calculation Steps

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 …

## BHA Design For Oil & Gas Wells

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 …

## Slip Crushing Formula & Calculations For Drill Pipe

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, …

## Drill Pipe Burst Pressure Calculation & Rating

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 …

## Drill Pipes Collapse Pressure Formula & Tables

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 …

## Drill Pipe Length Ranges & Design

The common drill pipe length is basically from 27-30 feet, which is classified as range-2 R2. This article will discuss their range and how to perform their design. What is The Common Drill Pipe Length Ranges The Drill String is made up of several sections of Drill Pipes. The term “stand” consists mainly of two …

## What Is Drill Collar In Oil & Gas Industry

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 …

## Heavy Weight Drill Pipe Guide In Oil & Gas

Heavy weight drill pipe (HWDP) specs are important to understand as they are the entrance to the heavy-weight drill pipe design & selection. This article will discuss its definition, uses, and advantages. Furthermore, we provided specification tables that will greatly assist in selecting the drill string design. In addition to that, you can also download …

## Drill String Components Guide In Oil & Gas

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 …

## Drill String Failure Causes & Solutions

In case of a drill string failure, such as pipe washout or twist-off, it is crucial to determine the cause of the failure to prevent it from happening again. This text covers the most common failure mechanisms, of which there are over a dozen, and provides a general understanding of what to do in each …