How do I identify a drill pipe thread?

Most threads can be identified using three primary measurements and by viewing the thread form or shape of the thread.

1. Pin Length: measured from the base of the thread to the tip.
2. Shoulder Diameter: diameter of the base of the pin (male) or box (female).

What is a drill pipe connection?

The drill pipe joint is a component of the drill pipe, divided into a male joint and a female joint, which are connected to the two ends of the drill pipe body. In order to enhance the connection strength of the joint, the wall thickness of the pipe body needs to be increased at the joint.

How does drill pipe seal?

To seal drill pipe connections, we rely on metal-to-metal contact at the shoulders. We ensure this by utilizing the correct make-up torque. This amount of torque also enables the mated connection to act as a unit, so it does not become a weak point. A ding can prevent a good seal and the connections could leak.

What is API drill pipe?

API Grade Drill Pipe Grade E drill pipe, referred to as “mild” steel, exhibits the lowest yield strength per unit area with a yield strength of less than 80,000 psi. It is able to withstand a greater percentage of stretch or “strain” prior to fracture than higher strength drill pipe grades.

What is the difference between pin and box?

The female end, or “box”, is threaded on the inside of the pipe. The male end, or the “pin”, is threaded along the outside. The pin is narrower than the box, so that the two pieces screw together.

How drill pipes are connected?

In what is called jointed pipe drilling, joints of drillpipe, each about 30 ft [9 m] long, are screwed together as the well is drilled. The crew sets the slips to grip the drillstring temporarily, unscrews that threaded connection and screws the kelly (or topdrive) into the additional joint (or stand) of pipe.

What does IF stand for in drill pipe?

API Connections IF (Internal Flush) FH (Full Hole)

What size is drill pipe?

The length of a drill pipe is typically Range 2 at 31 feet but can come in other lengths as well. A drill pipe is thick-walled and designed to hold its own weight in a drill string as the drill pipes are often run thousands of feet under the surface.

What size is drill stem pipe?

2 3/8”, 2 7/8” and 3 1/2” Drill Pipe for Common Use. In API 5DP specifciations, the common use OD are 2 3/8”, 2 7/8” and 3 1/2” drill pipes, these usually required in large amount of quantities in drilling activities.

What is Rotary shouldered connection?

A connection used on drill string elements which has coarse, tapered threads and sealing shoulders.