Casing with isolated annular space
OwnerEinar Kristianseninventor
Life of this patent
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Abstract
The invention is comprised of (see FIG. 1) an inner pipe (2), and an outer pipe (3), and two end subs (1). An isolated circular hollowed space is contained in between these components. The isolated space can be used for transport of different medias down into the well, this can be vacuum, air, gas, acids, solids, tracers, or other well stimulating medias. The end subs (1) can be connected to the casing in the well and become an integrated part of the casing. The invention can be cemented on the outside like the casing can. The invention can be perforated after installed in the well.
Claims7
Casing with isolated annulus space characterised by that is comprised of an inner pipe (2), and a outer pipe (3), two end subs (1), and in between these components an isolated, circular hollowed space that is used to transport different medium down into the well, the medium can be vacuum, air, gas, solids, fluids, tracers, or other well stimulating medias characterised by that the medias are released by perforating the casing.
Dependencies are inferred from the claim text.