All About Packers

A Packer is usually set just above the producing zone to isolate the producing interval from the casing annulus or from producing zones elsewhere in the wellbore.

In cased hole completions, production casing is run along the entire length of the well and through the reservoir. The cased hole effectively acts as a control mechanism for safe production of desired hydrocarbons and as a barrier preventing the reintroduction of unwanted fluids, gases, and solids into the wellbore.

After the drill string has been removed, a continuous coupling of casings of different diameters is run into the well at varying depths and secured to the formation in a process known as Cementing. ‘Cement’ here refers to a mixture of cement and certain additives which is pumped into the well and fills the vacuum between the casing and surrounding formation.

After the wellbore has been completely insulated from the surrounding formation, the casing must be perforated to stimulate production from viable sections of the reservoir called ‘pay zones’. Perforation is performed using ‘Perforating guns’ which set off controlled explosions that blast holes through specific sections of the casing (and into the reservoir) for controlled production of hydrocarbons.

If you are interested in Vigor's packer or other tools for oil and gas downholes, please do not hesitate to contact us.