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Coiled Tubing BOP (Blowout Preventer)

A coiled tubing BOP (Blowout Preventer) is a specialized type of BOP that is specifically designed for use with coiled tubing operations. It is typically smaller and more compact than a traditional drilling BOP and is designed to be used with coiled tubing units, which are used to perform a variety of well intervention tasks such as well cleaning, wellbore stimulation, and well completion.

The typical coiled tubing BOP has several key components, including: • The body: The body of a coiled tubing BOP is the main structure of the device that houses the electronic and mechanical systems. It is typically made of steel or aluminum and is designed to be watertight and to withstand the pressure of the well. • The control system: The control system of a coiled tubing BOP is the component that allows the operator to control the various valves, actuators, and rams that make up the BOP. It typically consists of a control console, a control panel, and a series of control lines that connect the control system to the various components of the BOP. • The rams: The rams of a coiled tubing BOP are the components that are used to seal the wellbore in the event of an emergency. They typically consist of a series of steel or composite rams that can be closed to seal the wellbore around the coiled tubing. • The shear rams: The shear rams of a coiled tubing BOP are the components that are used to cut the coiled tubing in the event of an emergency. They typically consist of a series of steel or composite rams that can be closed to cut the coiled tubing.

The engineering specifications for a coiled tubing BOP are: • Working pressure rating: typically from 5,000 to 15,000 psi • Size range: typically from 2" to 4" • Standard: API 16A (American Petroleum Institute)

A coiled tubing BOP (Blowout Preventer) is a specialized type of BOP that is specifically designed for use with coiled tubing operations. It is typically smaller and more compact than a traditional drilling BOP and is designed to be used with coiled tubing units, which are used to perform a variety of well intervention tasks. A coiled tubing BOP typically consists of a body, control system, rams and shear rams. The body is typically made of steel or aluminum, and it is designed to be watertight and to withstand the pressure of the well. The control system is the component that allows the operator to control the various valves, actuators, and rams that make up the BOP. The rams and shear rams are the components that are used to seal and cut the wellbore in the event of an emergency. The coiled tubing BOP is an essential piece of equipment for coiled tubing operations, and it is critical to the safety of the crew and the environment

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Slickline vs. Coiled Tubing Well interventions can be highly profitable and there are a number of tools to use. Slickline and coiled tubing are the most commonly used and flexible equipment to diagnose and remediate well issues.. Slickline is perhaps the simplest well intervention tool. It is a single strand "piano wire" that due to it's smooth surface is able to have a packing seal directly on the wire, hence the "slick" term. Slickline is in the category of wireline which includes braided and electric line which has strands of wire wrapped together, creating spaces between the strands of wire which requires grease packing to create an effective seal (and hence not "slick"). Slickline can be truck or skid mounted for use on- or offshore and lightweight units can even be transported by helicopter. The wire is wrapped on a drum and a winch is used to run the wire in and out of the well using weights on the end of the wire. A variety of tools can be run on slickline to perform mechanical actions such as setting and pulling plugs, pressure gauges, or safety valves. It is referred to as a wireline which also includes braided line and electric line. Electronic timers can be used to deploy tools using triggers and battery-powered tools. Coiled tubing is also used through tubing and consists of a continuous pipe rolled on a drum with a swivel connection allowing the coil to run "slick" through a packoff and has the advantage of being able to pump through the inside of the coil.
Sources list:
Image from https://exwelloilfield.com/ps_pressurecontrol/coil/pcc_bops.html
Image from https://www.iptc.org







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