A coiled tubing kickoff typically refers to the process of using coiled tubing (CT) to initiate or assist in the drilling of a new wellbore or sidetrack. This method is often used in directional drilling, well interventions, and re-entry operations. Key Steps in a Coiled Tubing Kickoff:1.Pre-Job Planning & Design:Assess well conditions and objectives.Select appropriate […]

The global oil and gas industry is using coiled tubing for an ever-increasing array of well intervention projects. Coiled tubing offers a number of operational and economic advantages, including: live well intervention, elimination of well kill and potentially damaging heavy-weight kill fluids, reduced operational footprint, horizontal intervention, and the ability to intervene without a rig. […]

This manual has been prepared to complement the information provided through the presentations and discussions held during a Schlumberger Dowell Coiled Tubing Client School. The technical information within this manual is intended to provide a basic understanding of the equipment, tools, processes and design requirements associated with modern coiled tubing operations. Comprehensive and detailed information, […]

Selecting the appropriate connector is generally dependent on the application and operator preference.Grapple connectorSetscrew/dimple connectorRoll-on connector 1.Roll-On ConnectorThe roll-on connector attaches to the internal diameter of the CT and is held in place by crimping the CT around a connector profile with a special crimping tool. However, the roll-on connector poses a significant obstruction to […]

In a coiled tubing (CT) operation, flowback refers to the return of fluids (such as wellbore fluids, treatment fluids, or reservoir fluids) to the surface after pumping stops. If the flow rate during flowback is very low, several factors could be responsible: 1. Reservoir Pressure is Low – If the reservoir has low energy, it […]

1 Coiled Tubing and Well Control Equipment2 Downhole Tools and Equipment3 The Coiled Tubing String4 Coiled Tubing Job Design5 Conventional Coiled Tubing Applications6 Wired Coiled Tubing Applications7 Coiled Tubing Completions8 Coiled Tubing Drilling9 AppendicesI Contingency PlanningII Deployment SystemsIII Coiled Tubing Unit Simulator10 Supplementary Information This manual has been prepared to complement the information provided through […]

A coiled tubing string is a continuous, flexible steel or composite pipe wound on a large spool. It is used in oil and gas operations for various well intervention, completion, and drilling tasks without the need for a conventional drill pipe or workover rig. Key Features:Made of high-strength, low-alloy steel or composite materials.Available in different […]

Stuck coiled tubing (CT) is one of the most common types of accidents that can result in the loss of a well. Although various methods exist to prevent such incidents, they are not always successful. When these methods fail, it becomes essential to safely cut the coiled tubing between the injector and the drum. The […]

BOP (Blowout Preventer), for coiled tubing operations is to provide a safety mechanism that controls and prevents uncontrolled releases of fluids or gas (blowouts) from the wellbore during operations. It ensures the safety of personnel, equipment, and the environment by: Well Control: The BOP is used to isolate the wellbore in the event of a […]