Chemical Cutter Wireline can be defined as an electric wireline tool and procedure that uses a propellant and a chemical, halogen fluoride, to burn a series of holes in the pipe, thereby weakening it so it is easily pulled apart (pipe recovery). This method of cutting pipe is the most recent innovation. It was patented …
Electric wireline service companies run instruments on conductor lines inside the stuck drill pipe or tubing and are able to accurately determine the stuck point (check also stuck point calculations) of the pipe. The instruments called free point indicator tools are highly sensitive electronic devices that measure both stretch and torque movement in a drill …
When a pipe becomes stuck in the wellbore for any reason, one of the first steps is to calculate to determine at what depth or point the pipe stuck has occurred. This process is called stuck pipe free point calculation. When retrieving production tubing from a well, it is often expected to find that the …
A fish is defined as any undesirable tool, piece of equipment, or other object found in the cased or uncased wellbore that stops or retards routine operational progress. Fishing in drilling oil and gas wells industry can be defined as any operation required to remove undesirable objects (the fish) from the wellbore. Fishing requires the …
The whipstock is an old directional drilling tool that is used today primarily to perform well sidetracking out of the casing. Whipstocks and jetting techniques of various types were the principal deflection tools for many years before turbine-type and positive-displacement mud motors were fully developed and made economical for drilling applications. A whipstock is a …
The Importance of Drilling Bit Selection Optimum ROP and Durability Drilling Bit selection commonly involves choosing a bit that offers the right balance between durability and Rate of Penetration. We cannot get the maximum penetration rate and durability in one bit. The right balance between the two will yield an Optimum ROP and Optimum Durability for …
Drilling with Any of the casing types & casing liners is not new. It was routine practice in some shallow fields between 50 and 60 years ago to attach a drilling bit to a small-diameter production string, drill a few hundred feet, and leave it on the bottom once total depth was reached. Outside that …
Geosteering is “the drilling of a horizontal or other deviated well, where decisions on well path adjustment are made based on real-time geologic and reservoir data. In conventional directional drilling, the well path is steered according to a predetermined geometric plan. The objective is to follow the line as closely as possible. Geosteering is a …
The oil and gas companies have integrated into today’s energy marketplace. They have contributed to augmenting the global economy worldwide. These corporative firms play a significant role in providing cost-effective and high-quality fuel sources to ameliorate the living standards of society. The Covid-19 pandemic has dramatically mitigated the supply of oil and gas reserves in …
It will be recalled that the upward velocity of the mud in the annulus between the drill pipe and the wall of the hole is an important consideration with the function of drilling fluid of removing drilling cuttings. The usual expression of this annular velocity is in feet per minute. Annular Velocity Calculations & Formula …