Wellbore Treatment Tool And Method

A method for treating a formation accessed through a liner port in a wellbore, the method comprising:

• running into the wellbore with a wellbore treatment tool connected to a tubing string, the wellbore treatment tool including a tool body including a first end formed for connection to a tubular string and an opposite end;
• a no-go key assembly including a tubular housing and a no-go key, the tubular housing defining an inner bore extending along the length of the tubular housing and an outer facing surface carrying the no-go key, the no-go key configured for locking the no-go key and tubular housing in a fixed position relative to the constraining wall, the tubular housing sleeved over the tool body with the tool body installed in the inner bore of the tubular housing;
• and a sealing element encircling the tool body and positioned between a first compression ring on the tool body and a second compression ring on the tubular housing, the sealing element being expandable to form an annular seal about the tool body by compression between the first compression ring and the second compression ring;
• positioning the wellbore treatment tool with the sealing element positioned downhole of the liner port;
• compressing the wellbore treatment tool to expand the sealing element to set the annular seal downhole of the liner port;
• and
• pumping a wellbore treatment fluid into the wellbore uphole of the annular seal and through the liner port into the formation.

A wellbore treatment assembly comprising:

• a liner installable in a wellbore, the liner including an inner bore defined within an inner wall, an outer surface, a first port extending from the inner wall to the outer surface, a first stop wall on the inner wall spaced axially from the first port, a second port extending from the inner wall to the outer surface spaced axially from the first port and a second stop wall on the inner wall spaced axially from the second port;
• a tubular string extendible through the liner and manipulatable from surface;
• and
• a wellbore treatment tool for setting against the inner wall of the liner including:
• a tool body including a first end formed for connection to the tubular string and an opposite end;
• a no-go key assembly including a tubular housing and a no-go key carried on the tubular housing,
• the tubular housing defining an inner bore extending from a first end to a second end of the tubular housing and an outer facing surface carrying the no-go key and the tubular housing sleeved over the tool body with the tool body installed in the inner bore of tubular housing;
• and
• the no-go key biased out to engage against the stop wall and to prevent the no-go key and tubular housing from moving downwardly past the stop wall;
• and
• a sealing element encircling the tool body and positioned between a first compression ring on the tool body and a second compression ring on the tubular housing, the sealing element being expandable to form an annular seal about the tool body by setting the no-go key against the stop wall and pushing the tool body down to compress the sealing element between the first compression ring and the second compression ring.