Guns normally run on wireline or tubing can also be run using coiled tubing allowing through tubing perforating to be carried out in horizontal wells. An electrical wireline can be installed inside the coiled tubing to allow depth correlation with casing collars or a gamma ray and the use of electrically initiated detonators. Here, we …
Coiled Tubing Drilling (CTD) has evolved rapidly since its first operations in 1992. The main motivation for drilling with coiled tubing was the presence of large diameter CT which makes it easy to deliver the required hydraulic horsepower to the downhole. This horsepower is mandatory for hole cleaning, transferring cuttings in the annulus, and providing …
Coiled Tubing (CT) is a continuous length of small-diameter pipe that is spooled onto a reel in the same way as wire or cable is wrapped on a drum. The coiled tubing operation permits the technique of “snubbing” a continuous length of tubing in and out of a live well through a stripper BOP arrangement. …
As we discussed previously, coiled tubing gains wide popularity, especially in workover operations due to its lower cost and wide applications. In this article, we shall provide Halliburton, Schlumberger, NOV, and Baker Hughes handbooks & manuals PDF to assist engineers and operators to understand more about coiled tubing equipment and operations. We think you might …
The term “coiled tubing” means a set of durable CT strings (CGT), a complex of surface equipment, consisting of the coiled tubing unit itself (providing tripping of the CT string – Tripping pipe procedures), and a complex of equipment, including a mud pump, compressors for injecting inert gas or a booster unit, a generator inert …
This Topic provides information on Coiled Tubing Pressure Control Equipment (surface ) commonly used to maintain the integrity of the well during CT operations (BOP) including Quad, and Combi types. Coiled tubing well control equipment is designed to allow safe well intervention services to be performed under pressure. However, well pressure should be kept to …
The Power Pack or Power Unit supplies hydraulic power to the coiled tubing equipment unit. Most conventional units use a diesel engine (examples are Scania DN14 and Detroit 8V71 engines) to power hydraulic pumps, which in turn drive the hydraulic motors in the injector head, tubing reel, and well control systems. The engine is independent …
Coiled tubing is stored on large reels in the same manner as the flexible cable of a wireline unit. It is in essence a storage drum, designed to store the entire tubing string, and is an integral part of the CT Unit. These reel’s capacities come in sizes ranging from approximately 5000 to 25000 feet. …
The injector head is the mechanism that transfers the force necessary to inject, retract or hold the coiled tubing with precision control while tripping into/out of the well (check pipe tripping guide). It is the main item in the coiled tubing unit and comprises the following two parts: The Injector Drive The Tubing Guide (Gooseneck) …