System and method for fluid diversion and fluid isolation

A diversion and movable isolation tool for a wellbore, comprising:

• a body comprising selectively actuated radial flow ports and generally defining a longitudinal axis;
• and
• a fluid restrictor assembly, comprising:
• a plurality of segments, each segment being substantially planar and comprising a central ring and at least one tab extending radially outward from the central ring, wherein a first of the plurality of segments is positioned about the body substantially within a first plane that is about perpendicular to the longitudinal axis and a second of the plurality of segments is positioned about the body substantially within a second plane that is about perpendicular to the longitudinal axis, and wherein the first plane is adjacent to and substantially parallel with the second plane;
• and
• retainer rings configured for sandwiching at least one of the one or more segments therebetween.

A method of cementing a wellbore, comprising:

• diverting a fluid flow from a first wellbore volume to a second wellbore volume using a diversion and movable isolation tool, wherein the diversion and movable isolation tool comprises:
• a body comprising selectively actuated radial flow ports;
• and
• a fluid isolation assembly, comprising:
• one or more segments, each segment comprising a central ring and at least one tab extending from the central ring;
• and
• providing a physical barrier between the first wellbore volume and the second wellbore volume using the diversion and movable isolation tool, the physical barrier being movable within the wellbore to remain between the first wellbore volume and the second wellbore volume despite changes in fluid volumes of the first wellbore volume.

A method of cementing a wellbore, comprising:

• delivering a diversion and movable isolation tool into the wellbore and thereby at least partially isolating a first wellbore volume from a second wellbore volume, the second wellbore volume being uphole relative to the first wellbore volume;
• passing fluid through the diversion and movable isolation tool into the first wellbore volume;
• substantially discontinuing the passing of fluid through the diversion and movable isolation tool into the first wellbore volume;
• passing fluid through the diversion and movable isolation tool into the second wellbore volume;
• and
• increasing a fluid pressure to disconnect the diversion and movable isolation tool from a delivery device,
• wherein after the disconnecting the diversion and movable isolation tool from the delivery service, a longitudinal location of the diversion and movable isolation tool along a length of the wellbore is movable in response to a change of fluid volume within the first wellbore volume.

A method of cementing a wellbore, comprising:

• delivering a diversion and movable isolation tool into the wellbore and thereby at least partially isolating a first wellbore volume from a second wellbore volume, the second wellbore volume being uphole relative to the first wellbore volume;
• passing fluid through the diversion and movable isolation tool into the first wellbore volume;
• substantially discontinuing the passing of fluid through the diversion and movable isolation tool into the first wellbore volume;
• wherein the substantially discontinuing the passing of fluid comprises interfacing an obturator with the diversion and movable isolation tool;
• passing fluid through the diversion and movable isolation tool into the second wellbore volume, wherein the fluid passed through the diversion and movable isolation tool into the second wellbore volume comprises cement;
• and
• increasing a fluid pressure to disconnect the diversion and movable isolation tool from a delivery device.

A diversion and movable isolation tool for a wellbore, comprising:

• a body comprising selectively actuated radial flow ports and generally defining a longitudinal axis;
• and
• a fluid restrictor assembly, comprising:
• a plurality of segments, each segment being substantially planar and comprising a central ring and at least one tab extending radially outward from the central ring, wherein a first of the plurality of segments is positioned about the body substantially within a first plane that is about perpendicular to the longitudinal axis and a second of the plurality of segments is positioned about the body substantially within a second plane that is about perpendicular to the longitudinal axis, and wherein the first plane is adjacent to and substantially parallel with the second plane;
• wherein at least two of the one or more segments are angularly located relative to each other and rotationally about the longitudinal axis of the diversion and moveable isolation tool according to a rotational convention;
• and
• retainer rings configured for sandwiching at least one of the one or more segments therebetween.

A diversion and movable isolation tool for a wellbore, comprising:

• a body comprising selectively actuated radial flow ports and generally defining a longitudinal axis;
• and
• a fluid restrictor assembly, comprising:
• a plurality of segments, each segment being substantially planar and comprising a central ring and at least one tab extending radially outward from the central ring, wherein a first of the plurality of segments is positioned about the body substantially within a first plane that is about perpendicular to the longitudinal axis and a second of the plurality of segments is positioned about the body substantially within a second plane that is about perpendicular to the longitudinal axis, and wherein the first plane is adjacent to and substantially parallel with the second plane;
• and
• a fluid flow path extending through the one or more segments.

A diversion and movable isolation tool for a wellbore, comprising:

• a body comprising selectively actuated radial flow ports and generally defining a longitudinal axis;
• and
• a fluid restrictor assembly, comprising:
• a plurality of segments, each segment being substantially planar and comprising a central ring and at least one tab extending radially outward from the central ring, wherein a first of the plurality of segments is positioned about the body substantially within a first plane that is about perpendicular to the longitudinal axis and a second of the plurality of segments is positioned about the body substantially within a second plane that is about perpendicular to the longitudinal axis, and wherein the first plane is adjacent to and substantially parallel with the second plane;
• and
• a backstop configured to restrict bending of at least one of the tabs.

A method of cementing a wellbore, comprising:

• delivering a diversion and movable isolation tool into the wellbore and thereby at least partially isolating a first wellbore volume from a second wellbore volume, the second wellbore volume being uphole relative to the first wellbore volume;
• wherein the diversion and movable isolation tool comprises a body comprising selectively actuated radial flow ports and a fluid isolation assembly comprising one or more segments, each segment comprising a central ring and at least one tab extending from the central ring;
• passing fluid through the diversion and movable isolation tool into the first wellbore volume;
• substantially discontinuing the passing of fluid through the diversion and movable isolation tool into the first wellbore volume;
• passing fluid through the diversion and movable isolation tool into the second wellbore volume;
• and
• increasing a fluid pressure to disconnect the diversion and movable isolation tool from a delivery device.