Scope It covers the visual examination, of the internal and external surfaces of drill pipe, to determine, the general condition. Apparatus Paint marker Depth gauge Light capable of illuminating the full length of the internal surface Preparation All pipe should be numbered sequentially Surface shall be clean and the metal surface clean. NO surface particle … Continue reading Visual Inspection
Tag: Drilling Tools
Drill Pipe Inspection
SCOPE This document recommends standards procedures for conducting an inspection program on drill stem components. Inspection and disassembly of equipment such as jars, and hole openers are not covered. PURPOSE To reduce inspection errors. The program defines: What method to use on which component A step by step procedure for each method What defines acceptable … Continue reading Drill Pipe Inspection
BOP Testing, Inspection and Maintenance
(a) BOP pressure testing timeframes.You must pressure test your BOP system: When installed; and Before 14 days have elapsed since your last BOP pressure test. You must begin to test your BOP system before 12 a.m. (midnight) on the 14th day following the conclusion of the previous test. (b) BOP test pressures.When you test the … Continue reading BOP Testing, Inspection and Maintenance
Running Casing
Pre-running procedures Always pre-plan Ensure proper layout on the rig rack Joints need to be laid out properly especially when dealing with different weights of casing in one run. Clean the threads. Once the thread protectors are removed the threads should be cleaned. The tubular interiors should be inspected. Handling procedures Use thread protectors Use … Continue reading Running Casing
Pipe Handling Procedure
Handling Always make sure that thread protectors are properly in place/fastened. In the event of the drill pipe lacking the thread protectors the pipe should be marked for inspection Care should be taken for special service drill pipe or such equipment with special coatings. Use rope slings to control pipe when off loading by hand. … Continue reading Pipe Handling Procedure
A Guide to Hole Cleaning
Hole cleaning is an essential part of drilling. It ensures that the material that is drilled is effectively and efficiently being removed from the wellbore. Failure to achieve proper hole cleaning can result in a host of wellbore problems and issues. Indications of poor hole cleaning: Excessive pull on trips High rotary torque Lowered rate … Continue reading A Guide to Hole Cleaning
Effect of bit on Rotary Assembly
Roller Cone – makes very little difference on the build, hold or drop angle. This type of bit does influence the walk rate. They have a right walk tendency, long tooth bits exhibit this more than short tooth bits. PDC – no walk occurs. They do affect the inclination. The gauge length of the … Continue reading Effect of bit on Rotary Assembly
Control with a Rotary Assembly
Side Force and Tilt Essentially these are the forces and angles that determine and influence where the bit goes. Bit Trajectory Stabilizer gauge and placement Drill Collar length and diameter Weight on bit Rotary Speed Bit type Formation Flow rate Rate of penetration Build Assemblies To increase the build rate – longer distance between near … Continue reading Control with a Rotary Assembly
Replaceable Sleeve Stabilizer
Stabilizer-Integral Bladed
(Oil)Well Bore Packers
 Packer Applications               Casing Protection               Separation of multiple Zones               Isolation Packers               Elimination of Surging and heading               Sub-surface safety control               Artificial/Gas LiftThere are three types of packers; mechanical and hydraulic set and permanent. All packers fall into one or a combination of these.Mechanical Set Packers- These are set by some form of tubing movement, usually a rotation … Continue reading (Oil)Well Bore Packers
BHA Components
BHA Components Junk Sub – contains a narrow trough which exists in the sub to collect small pieces of metal. Shock Sub – dampens the drill bit vibration. Sacrificially prolongs the life of the drill string, bit and rig. They are not stiff when compared to drill collars. They tend to be limited to straight … Continue reading BHA Components
Stabilizing Tools
Stabilizing Tools Essentially they centre the BHA in the hole. The basic types are rotating and non- rotating. In soft rock it can gauge the hole. The rotating type has blades that are spiraled around the body. The blades can be integral, namely molded onto the body, welded to the body or fastened to the … Continue reading Stabilizing Tools
The Mud Motor
The Mud Motor Based on the principle developed by, Rene Moineau. The theory states that a helical rotor with one or more lobe will rotate eccentrically when within a stator containing one or more lobe than the rotor. The flow of this fluid transmits power allowing the assembly to rotate and turn the bit. Different … Continue reading The Mud Motor
Bottom Hole Assembly (BHA) Configuration
Bottom Hole Assembly (BHA) Configuration There are three (3) types of bottom hole configurations; TYPE I - standard, simple configuration, drill collars and drill pipe only. Neutral point lies within the drill collars. TYPE II – uses the heavy weight drill pipe as a transition between the drill collars and the drill pipe. Weight on … Continue reading Bottom Hole Assembly (BHA) Configuration
Rotary Assemblies
 Rotary Assemblies Usually used where formations are predictable and rig economics are an issue. In such an assembly the weight of the drill collar gives the bottom hole assembly the tendency to sag or flex to the low side of the hole, collar stiffness length and stabilizer diameter and placement are engineered as a means … Continue reading Rotary Assemblies