WELLBORE TREATMENT APPARATUS AND METHOD

摘要

A method for wellbore treatment includes running a liner into a wellbore, the liner including a wall, an inner bore defined by the wall, a first port through the wall, a second port though the wall spaced axially from the first port, a first removable closure for the first port and a second removable closure for the second port; positioning the liner in an open hole section of the wellbore to create an annulus between the liner and a portion of the wellbore wall and with the second port downhole of the first port; inserting a treatment string assembly into the liner, the treatment string assembly including a tubing string and an annular seal about the tubing string and being insertable into the inner bore of the liner; setting the annular seal to create a seal between the tubing string and the liner downhole of the second port; and while the first port is closed to fluid flow therethrough, pumping wellbore treatment fluid into an annular area between the tubing string and the liner such that the fluid passes through the second port and into the annulus to treat the open hole section of the wellbore adjacent the second port. The treatment string assembly may further include a port-opening tool and a fluid communication port permitting fluid communication between the tubing string outer surface and a fluid conduit through the tubing string adjacent an upper side of the annular seal.

主权项

1. An apparatus for wellbore treatment comprising:
a liner including a wall, an inner bore defined by the wall, a first port through the wall, and a second port though the wall spaced axially from the first port; and a treatment string assembly insertable into the inner bore of the liner, the treatment string including a tubing string with a lower end, an outer surface and a fluid conduit through which fluid can be conveyed through the string, a fluid communication port permitting fluid communication between the outer surface and the fluid conduit, a port-opening tool carried on the tubing string and an annular seal about the outer surface of the tubing string positioned between the fluid communication port and the lower end.