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 often used to carry out operations similar to wirelining ...

May 31, 2022 · Coiled tubing is used in long, horizontal wells, or instead of cable if drilling or completion fluid is to be circulated in the well. Coiled tubing can be used for both well workover and well drilling.

Coiled tubing (CT) refers to a continuous length of small-diameter steel pipe and related surface equipment as well as associated drilling, completion and workover, or remediation, techniques. Coiled tubing oilfield technology was initially developed for working on live, producing wells.

Nov 14, 2020 · Coiled tubing is a metal pipe used to perform various well completion, drilling, and intervention operations. This metal pipe is flexible enough to be stored on the reel. Coiled tubing string comes in various sizes ranging from 1” to almost 4” in diameter in some cases.

In the oil and gas sector, coiled tubing operation is a technique used for well intervention without using traditional drill pipes. It employs a continuous coil of tubing, typically made of steel or composite material, wound onto a large spool and then inserted into the wellbore.

Aug 21, 2024 · This article describes the operation and applications for coiled tubing units (CTUs), and it specifically covers the well control stack and industry recommended practices for pressure testing coiled tubing.

Nov 17, 2020 · Coiled tubing is used for a variety of different completion, drilling, and intervention operations. Today we will take a look at the 18 most common coiled tubing operations.

Coiled Tubing (CT) is a single, long length of pipe that has been continually milled and spooled onto a take-up reel during the manufacturing process. The coiled tubing weight, grade, and size will yield the maximum weight and length.

A long, continuous length of pipe wound on a spool. The pipe is straightened prior to pushing into a wellbore and rewound to coil the pipe back onto the transport and storage spool. Depending on the pipe diameter (1 in. to 4-1/2 in.) and the spool size, coiled tubing can range from 2,000 ft to 15,000 ft [610 to 4,570 m] or greater length.

Jan 27, 2025 · Coiled Tubing Drilling: Directional and Horizontal Drilling With Larger Hole Sizes. Paper SPE-159349-MS presented at the SPE Annual Technical Conference and Exhibition, San Antonio, Texas, 8-10 October.