Pressure actuated vent assembly for slanted wellbores

Details Pressure actuated vent assembly for slanted wellbores Pressure actuated vent assembly for slanted wellbores

E - Fixed Constructions

21

B

166/11

E21B 34/10 (2006.01) E21B 29/02 (2006.01) E21B 33/12 (2006.01) E21B 33/129 (2006.01) E21B 43/1185 (2006.01)

Patent

CA 1178531

PRESSURE ACTUATED VENT ASSEMBLY FOR SLANTED WELLBORES ABSTRACT OF THE INVENTION A pressure actuated vent assembly for completing a slanted wellbore. The assembly is connected in series relation- ship within a tubing string at a location below a packer, and the packer elements are located between the casing and the tub- ing string, thereby dividing the casing annulus into an upper and lower annular area. The vent assembly includes a ported sliding sleeve which is slidably received about a ported main body member. The sleeve is held into position by a shear pin. Guide pins maintain the ports of the sleeve and main body member aligned with one another. When pressure is applied to the in- side of the tubing, the sliding sleeve is forced to slide from an upper closed position, in a downward direction, where the sleeve locks into the opened position. The vent assembly is especially useful in slanted boreholes because various tools may be circulated down through the axial passageway of the assembly and downhole to perform a number of different downhole operations, such as completing a new wellbore, for example. - 1 -

380717

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