Perforation is a process used in oil and gas wells to create holes in the well casing, allowing hydrocarbons (oil or gas) to flow from the reservoir into the wellbore. This is typically done using perforation guns loaded with explosives. Why Use Coiled Tubing (CT) for Perforation? Perforation guns are usually deployed on a wireline, […]
Category: Coiled Tubing
(MHA) Coiled Tubing
A Motorhead Assembly (MHA) is an essential component in coiled tubing operations, integrating multiple tools into a single compact unit. Typically, an MHA includes: 1-Connector: Attaches the coiled tubing to the bottom-hole assembly. 2-Double Flapper Check Valve: Prevents backflow of well fluids into the coiled tubing. 3-Hydraulic Disconnect: Allows for detachment of the tool string […]
Load Cell Issues During Coiled Tubing Milling Operations
In coiled tubing milling, the load cell is essential for monitoring the weight-on-bit (WOB), providing real-time data on force applied to the downhole milling tool. Load cell issues can significantly impact operations, creating inefficiencies and risks. Key load cell issues and mitigation strategies include: 1. Impact on Weight-on-Bit (WOB) Control Problem: A faulty load cell […]
Coil Tubing Operations in Stuck Wells
Using coil tubing in stuck wells is an effective method for retrieving stuck equipment and maintaining well integrity. Here’s a comprehensive guide on how coil tubing is used in such operations: Coil Tubing Operations in Stuck Wells: Benefits of Using Coil Tubing:
Coiled Tubing Max Speed
The maximum speed of coiled tubing can vary depending on the specific equipment, but typically ranges between 100 to 250 feet per minute with some high-performance units reaching speeds as high as 250 ft/min at minimum displacement, while maintaining a lower speed at maximum displacement; always consult the manufacturer’s specifications for the exact maximum speed […]
Comprehensive Introduction To Coiled tubing Operations
The coiled tubing unit has evolved into a portable, compact and efficient unit that eliminates the problem of making and breaking connections going in and out of the hole. It uses a continuous length of variously sized tubing that is stored on a reel. The length is usually sufficient to reach the well’s total depth […]
Coiled Tubing Milling Job Main Problem and Solutions
In coiled tubing milling, we remove block or deposits in wellbore. Milling by coiled tubing is difficult work. Downhole area is changing, and mechanical and hydraulic problems come often. Main problems we see in CT milling and ways to solve them: Cause: Solution: Cause: Solution: Solution: Cause: Solution: Solution: Solution: In coiled tubing milling, many […]
Coiled Tubing Introduction
In the oil and gas industry, coiled tubing refers to a long metal pipe, normally 1 to 3.25 in (25 to 83 mm) in diameter which is supplied spooled on a large reel. It is used for interventions in oil and gas wells and sometimes as production tubing in depleted gas wells. Coiled tubing is […]
Coiled Tubing Injector Head & Gooseneck
Injector Head is one of the seven major components of coiled tubing unit. Injector Head-FunctionRun, Pull and hold CT string inside the well bore. Injector Head-capacity & main componentsInjector comes with the pulling capacity of 40, 60, 80, 100 and 160 thousand lbs.Main components of Injector Head include.*Gooseneck*Chain system*Drive and brake system*Weight measurement system Gooseneck […]
Coiled Tubing String and Work Reel
Coiled Tubing Properties Outer Diameter1.5″1.75″2″ Wall Thickness0.109″0.134″0.145″0.156″0.175″0.188 etc. Yield Strength70,000 psi80,000 psi90,000 psi100,000 psi110,000 psi Coiled Tubing Reel Two main functions*Store coiled tubing string*Fluid pumping provisionComponents*Reel drum*Reel drive and brake system*Level wind assembly*Depth counter assembly*Reel swivel and manifold*Lubrication system*Crash protection frame