Safety joint can be used in drilling, fishing, drill stem testing, washover or any pipe string. It is a threaded connection with coarse threads or other special features that will cause it to unscrew before other connections in the string. It is one of the great tools that have been used in oil and gas …
We use the term ‘drilling toolface’ in connection with deflection tools or steerable motors and can express it in two ways. Physically, the place on a deflection tool, usually marked with a scribe line, is positioned to a particular orientation while drilling to determine the future course of the wellbore. Conceptually, “toolface” is a shortened …
Before approving a drilling program, the drilling team must perform estimation for the overall costs of the oil well drilling operations. Suppose there is no previous drilling data in a new area. In that case, the drilling team can only approximate the well cost roughly. In most cases, the drilling team can use available well …
A tool joint is a heavy coupling element for drill pipe. Tool joints have coarse, tapered threads and seating shoulders designed to: The tool joint is attached to the pipe by welding during the manufacture of the drill pipe joint (API drill pipe specifications). It has two parts, a pin and a box. Tool Joint …
We use several methods to create a hole from the wellbore through the casing and any cement sheath into the producing zone, such as shaped perforating charges, bullet guns, and abrasive jets. These methods are called perforating methods. Perforations create conduits into the reservoir that allow hydrocarbon recovery and influence it. Different perforating requirements are …
A hole opener is used when the successive hole sections could have been drilled using regular drilling bits but where, for one reason or another reason, a reduced diameter hole section Âknown as a pilot hole Âwas required at a particular depth. It is designed to fit onto the drill string and is commonly used …
The purpose of the marine drilling riser is to extend the offshore well from the top of the blow-out preventer package at the sea bed to the diverter beneath the rotary table. Thus, Drilling fluid returns are obtained, and tools can be easily guided into the well bore. Choosing the appropriate marine riser size based …
Have you ever wondered what keeps the pipes and other oilfield equipment threads tightly sealed? The answer lies in a small but essential product known as thread compound. Thread compounds are used in casing, tubing, line-pipe, or drill string on every threaded connection. For the purposes of this topic, we will deal only with the …
The Mud logging Engineer represents contractor logging systems at the well site. He is responsible for maintaining and correctly operating the equipment supplied to provide the service. He collates and presents the information monitored per company standard procedures and customer requirements to ensure a high-quality service. To accomplish his job description, the mud logger should have a …
One significant focus of the oil industry’s attention is the deep offshore. The offshore part of the world’s sedimentary basins – likely to contain source rocks for oil and gas – is estimated at around 50 million square kilometers. Two-thirds of this 50 area lies in Metres of water depths greater than 200 meters. This …