# US 8,739,873 B2 · System and method for fluid diversion and fluid isolation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,739,873 B2 - Document ID: US8739873B2 - Status: Granted - Kind: B2 - Application number: 12/718,761 - Filed: 2010-03-05 - Published: 2011-09-08 - Granted: 2014-06-03 - Earliest claimed: 2010-03-05 - Assignees: Halliburton Energy Services, Inc. - Applicants: Henry E. Rogers; Steve L. Holden - Inventors: Henry E. Rogers; Steve L. Holden - Web page: https://patentgrep.com/patent/US8739873B2 ## CPC - E21B 33/13: Methods or devices for cementing, for plugging holes, crevices or the like - E21B 33/1208: {characterised by the construction of the sealing or packing means (E21B33/1277 takes precedence)} - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS ## Abstract 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. A diversion and movable isolation tool for a wellbore, comprising 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. ## Claims ### Claim 1 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 during the delivering the diversion and movable isolation tool, fluid is passed through the diversion and moveable isolation tool from the first wellbore volume to the second 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; and increasing a fluid pressure to disconnect the diversion and movable isolation tool from a delivery device. ### Claim 2 (depends on 1) The method of claim 1, wherein the passing fluid into the first wellbore volume comprises passing fluid through a central bore of the movable isolation tool. ### Claim 3 (depends on 1) The method of claim 1, wherein the passing fluid into the second wellbore volume is performed in response to an obturator being interfaced with the diversion and movable isolation tool. ### Claim 4 (depends on 1) The method of claim 1, wherein after the disconnecting the diversion and movable isolation tool from the delivery device, 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. ### Claim 5 (depends on 4) The method of claim 4, wherein a location of the fluid passed through the diversion and movable isolation tool into the second wellbore volume is movable in response to a change of fluid volume within the first wellbore volume. ### Claim 6 (depends on 4) The method of claim 4, further comprising: introducing a fluid into the wellbore in response to a change of fluid volume within the first wellbore volume. ### Claim 7 (depends on 6) The method of claim 6, wherein the fluid introduced into the second wellbore volume in response to a change of fluid volume within the first wellbore volume comprises a wellbore servicing mud. ### Claim 8 (depends on 1) The method of claim 1, wherein the fluid passed through the diversion and movable isolation tool into the second wellbore volume comprises cement. ### Claim 9 (depends on 1) The method of claim 1, 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. ### Claim 10 (depends on 9) The method of claim 9, wherein the diversion and movable isolation tool further comprises: a seat configured for interaction with an obturator so as to selectively actuate the radial flow ports; retainer rings configured for sandwiching at least one of the one or more segments therebetween; and a fluid flow path extending through the one or more segments. ### Claim 11 (depends on 10) The method of claim 10, wherein a plurality of the one or more segments are angularly located relative to each other and relative to a longitudinal axis of the diversion and moveable isolation tool according to a rotational convention. ### Claim 12 (depends on 11) The method of claim 11, wherein the rotational convention comprises equally angularly offsetting a plurality of the segments about the longitudinal axis. ### Claim 13 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. ### Claim 14 (depends on 13) The diversion and movable isolation tool of claim 13, further comprising: a seat configured for interaction with an obturator to selectively actuate the radial flow ports. ### Claim 15 (depends on 13) The diversion and movable isolation tool of claim 13, 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. ### Claim 16 (depends on 15) The diversion and movable isolation tool of claim 15, wherein the rotational convention comprises equally angularly offsetting at least two of the one or more segments about the longitudinal axis. ### Claim 17 (depends on 13) The diversion and movable isolation tool of claim 13, the fluid isolating assembly further comprising: a fluid flow path extending through the one or more segments. ### Claim 18 (depends on 13) The diversion and movable isolation tool of claim 13, the fluid isolating assembly further comprising: a backstop configured to restrict bending of at least one of the tabs. ### Claim 19 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. ### Claim 20 (depends on 19) The method of claim 19, wherein the first wellbore volume is downhole relative to the second wellbore volume. ### Claim 21 (depends on 19) The method of claim 19, wherein the physical barrier comprises the fluid isolation assembly. ### Claim 22 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. ### Claim 23 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. ### Claim 24 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. ### Claim 25 (depends on 24) The diversion and movable isolation tool of claim 24, wherein the rotational convention comprises equally angularly offsetting at least two of the one or more segments about the longitudinal axis. ### Claim 26 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. ### Claim 27 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. ### Claim 28 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. ### Claim 29 (depends on 28) The method of claim 28, wherein the diversion and movable isolation tool further comprises: a seat configured for interaction with an obturator so as to selectively actuate the radial flow ports; retainer rings configured for sandwiching at least one of the one or more segments therebetween; and a fluid flow path extending through the one or more segments. ### Claim 30 (depends on 29) The method of claim 29, wherein a plurality of the one or more segments are angularly located relative to each other and relative to a longitudinal axis of the diversion and moveable isolation tool according to a rotational convention. ### Claim 31 (depends on 30) The method of claim 30, wherein the rotational convention comprises equally angularly offsetting a plurality of the segments about the longitudinal axis.