Drill Pipe And Drill Collars

Our Non-Mag Drill Collars are made from oilfield industry standard modified stainless steel. RDS  M-SERIES offers specific types of drill collars (slick, flex, and spiral) that are engineered for specific purposes in both vertical and horizontal drilling.

What is a Drill Collar

Typical schematics of drill string torsional vibration in a vertical well.

What is the difference between drill pipe and drill collar

Drill String Components

Drill Pipe Selection Guide: Types, Features, Applications

Factory Supply API Drilling Rig Tool Drill Pipe Collar API 5 API 7 Drill Collars Spiral - China Drill Collar, Petroleum Equipment Machinery

Drill Collar - SHANDONG RUNDONG PETROLEUM MACHINERY CO.,LTD.

Recognizing Drill Pipe Under-Torque

General 1 — Rex McFadden

On physical models in V.I. Gulyayev's three papers on drill string whirling and torsional vibrations - ScienceDirect

Heavy Weight Drill Pipe & Drill Collar – hollylandpipe

Drill Collars and Drill String - Download Free PDF Book

Drill Pipe Severing Tool

DRILL COLLAR DP-Master – Drill Pipe Manufacturer