A method comprising a) providing a packer comprising a tubular mandrel, a swellable elastomeric body supported on the mandrel, and first and second end caps secured to the mandrel, each end cap having an inner bore therethrough and being positioned such that a first end of each end cap abuts an end of the swellable elastomeric body, wherein the first end of at least one end cap includes a strain absorbing undercut formed in the inner bore thereof; b) positioning the packer within a wellbore; c) providing a swelling fluid into the wellbore; d) forming a fluid seal against the wellbore with the swellable elastomeric body; and e) extruding the swellable elastomeric body into the undercut.
E21B 23/06 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour le montage des packers
A modular tool anchor includes an anchor body positionable about a tubular. The anchor includes an anchor wedge for gripping against the tubular. A wedge drive screw engages a piston that biases the wedge into contact with the tubular as the wedge drive screw is tightened. The anchor also includes a compression seal positioned within the anchor body. A sealing flange abuts the compression seal. As seal compression screws are tightened, the sealing flange engages the compression seal and forces it against the tubular.
E21B 23/01 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour ancrer les outils ou similaires
A packer includes a tubular mandrel. The packer includes a first end cap, the first end cap coupled to the mandrel. The packer includes a backup mechanism coupled to the first end cap. The packer includes a swellable elastomeric body positioned about the mandrel abutting the first end cap. The swellable elastomeric body is positioned at least partially between the mandrel and the backup mechanism. The swellable elastomeric body is positioned to not cover the entire outer surface of the backup mechanism.
A modular downhole packer includes a valve body, which includes a threaded coupler adapted to couple to a tubular and a valve assembly. The packer includes a packer element assembly, which includes a first end coupler, the first end coupler mechanically coupled to the valve body; a packer element; and a second end coupler. The packer includes a floating seal element mechanically coupled to the second end coupler, the floating seal element including a seal extension. The packer includes a floating end anchor. The floating end anchor includes a compression seal housing, the compression seal housing including an outer sealing surface positioned within the seal extension of the second end coupler; a compression seal positioned within a seal pocket formed in the compression seal housing; and an anchor body, the anchor body threadedly coupled to the seal pocket of the compression seal housing, the anchor body abutting the compression seal.
E21B 23/06 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour le montage des packers
E21B 23/01 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour ancrer les outils ou similaires
A modular tool anchor includes an anchor body positionable about a tubular. The anchor includes an anchor wedge for gripping against the tubular. A wedge drive screw engages a piston that biases the wedge into contact with the tubular as the wedge drive screw is tightened. The anchor also includes a compression seal positioned within the anchor body. A sealing flange abuts the compression seal. As seal compression screws are tightened, the sealing flange engages the compression seal and forces it against the tubular.
E21B 23/01 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour ancrer les outils ou similaires
A valve collar for a downhole packer includes a flow path. The flow path includes an opening valve and closing valve. The valve collar further includes a lockout valve piston. The lockout valve piston is positioned such that in an unset position, the flow path is open and in a set position, the flow path is blocked by the lockout valve piston. The lockout valve piston may be adapted to be shifted from the unset position to the set position by a pressure spike inside the valve collar. The lockout valve piston may be held in the unset position by a temporary restraint.
E21B 34/10 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits actionnés par un fluide de commande provenant de l'extérieur du trou de forage
A hydraulic port collar includes a housing having one or more housing ports. The hydraulic port collar includes a port collar bore disposed within the housing forming an inner surface of the housing. The hydraulic port collar includes a sliding sleeve disposed within the port collar bore. The sliding sleeve has a sliding sleeve inner surface and a sliding sleeve outer surface. The hydraulic port collar includes a dissolvable or fragmentable landing seat radially aligned with and abutting the sliding sleeve inner surface.
E21B 34/14 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits actionnés par le mouvement des outils, p. ex. obturateurs à manchons actionnés par des pistons ou par des outils à câble
E21B 34/10 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits actionnés par un fluide de commande provenant de l'extérieur du trou de forage
E21B 34/06 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits
E21B 33/14 - Procédés ou dispositifs de cimentation, de bouchage des trous, des fissures ou analogues pour la cimentation des tubes dans les trous de forage ou de sondage
E21B 34/00 - Aménagements des vannes pour les trous de forage ou pour les puits
E21B 29/02 - Découpage ou destruction de tubes, packers, bouchons ou câbles, situés dans les trous de forage ou dans les puits, p. ex. découpage de tubes endommagés, de fenêtresDéformation des tubes dans les trous de forageRemise en état des tubages de puits sans les retirer du sol au moyen d'explosifs ou par des moyens thermiques ou chimiques
A hydraulic port collar includes a housing having one or more housing ports. The hydraulic port collar includes a port collar bore disposed within the housing forming an inner surface of the housing. The hydraulic port collar includes a sliding sleeve disposed within the port collar bore. The sliding sleeve has a sliding sleeve inner surface and a sliding sleeve outer surface. The hydraulic port collar includes a dissolvable or fragmentable landing seat radially aligned with and abutting the sliding sleeve inner surface.
E21B 34/14 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits actionnés par le mouvement des outils, p. ex. obturateurs à manchons actionnés par des pistons ou par des outils à câble
E21B 34/10 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits actionnés par un fluide de commande provenant de l'extérieur du trou de forage
E21B 34/06 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits
E21B 33/14 - Procédés ou dispositifs de cimentation, de bouchage des trous, des fissures ou analogues pour la cimentation des tubes dans les trous de forage ou de sondage
E21B 29/02 - Découpage ou destruction de tubes, packers, bouchons ou câbles, situés dans les trous de forage ou dans les puits, p. ex. découpage de tubes endommagés, de fenêtresDéformation des tubes dans les trous de forageRemise en état des tubages de puits sans les retirer du sol au moyen d'explosifs ou par des moyens thermiques ou chimiques
A valve collar for a downhole packer includes a flow path. The flow path includes an opening valve and closing valve. The valve collar further includes a lockout valve piston. The lockout valve piston is positioned such that in an unset position, the flow path is open and in a set position, the flow path is blocked by the lockout valve piston. The lockout valve piston may be adapted to be shifted from the unset position to the set position by a pressure spike inside the valve collar. The lockout valve piston may be held in the unset position by a temporary restraint.
E21B 34/14 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits actionnés par le mouvement des outils, p. ex. obturateurs à manchons actionnés par des pistons ou par des outils à câble
E21B 34/06 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits
E21B 34/10 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits actionnés par un fluide de commande provenant de l'extérieur du trou de forage
A hydraulic port collar includes a housing having one or more housing ports. The hydraulic port collar includes a port collar bore disposed within the housing forming an inner surface of the housing. The hydraulic port collar includes a sliding sleeve disposed within the port collar bore. The sliding sleeve has a sliding sleeve inner surface and a sliding sleeve outer surface. The hydraulic port collar includes a dissolvable or fragmentable landing seat radially aligned with and abutting the sliding sleeve inner surface.
E21B 33/14 - Procédés ou dispositifs de cimentation, de bouchage des trous, des fissures ou analogues pour la cimentation des tubes dans les trous de forage ou de sondage
E21B 34/10 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits actionnés par un fluide de commande provenant de l'extérieur du trou de forage
E21B 34/12 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits actionnés par le mouvement des tubages ou des colonnes de production
E21B 43/10 - Mise en place de tubages, filtres ou crépines dans les puits
A valve collar for a downhole packer includes a flow path. The flow path includes an opening valve and closing valve. The valve collar further includes a lockout valve piston. The lockout valve piston is positioned such that in an unset position, the flow path is open and in a set position, the flow path is blocked by the lockout valve piston. The lockout valve piston may be adapted to be shifted from the unset position to the set position by a pressure spike inside the valve collar. The lockout valve piston may be held in the unset position by a temporary restraint.
E21B 33/14 - Procédés ou dispositifs de cimentation, de bouchage des trous, des fissures ou analogues pour la cimentation des tubes dans les trous de forage ou de sondage
E21B 34/14 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits actionnés par le mouvement des outils, p. ex. obturateurs à manchons actionnés par des pistons ou par des outils à câble
E21B 34/06 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits
A balanced piston toe sleeve allows a pressure test cycle to be carried out before opening the bore of the toe sleeve to the wellbore. The balanced piston toe sleeve includes a valve assembly in which a valve piston separates a valve cylinder into a balancing cylinder and an actuation cylinder. The actuation cylinder is coupled to the bore through a check valve which allows unidirectional flow into the actuation cylinder. The balancing cylinder is in fluid communication with the bore. After a pressure test cycle, the pressure in the balancing cylinder reduces, while the pressure in the actuation cylinder is retained by the check valve. The valve piston shifts into the open position, allowing fluid flow from the bore to the toe sleeve.
A balanced piston toe sleeve allows a pressure test cycle to be carried out before opening the bore of the toe sleeve to the wellbore. The balanced piston toe sleeve includes a valve assembly in which a valve piston separates a valve cylinder into a balancing cylinder and an actuation cylinder. The actuation cylinder is coupled to the bore through a check valve which allows unidirectional flow into the actuation cylinder. The balancing cylinder is in fluid communication with the bore. After a pressure test cycle, the pressure in the balancing cylinder reduces, while the pressure in the actuation cylinder is retained by the check valve. The valve piston shifts into the open position, allowing fluid flow from the bore to the toe sleeve.
E21B 34/10 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits actionnés par un fluide de commande provenant de l'extérieur du trou de forage
E21B 34/14 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits actionnés par le mouvement des outils, p. ex. obturateurs à manchons actionnés par des pistons ou par des outils à câble
E21B 34/00 - Aménagements des vannes pour les trous de forage ou pour les puits
A control dart having an internal power supply includes an RFID reader adapted to read one or more RFID tags positioned within a tool string. In response to reading an RFID tag having a selected identification code, the control dart may extend one or more locking dogs. When extended, the locking dogs allow the control dart to actuate a downhole tool.
A downhole packer element includes an inner and outer cable wrapped layer positioned about an inflatable bladder. The inner and outer cable wrapped layers are formed from helically wrapped, parallel cables. The inner cable wrapped layer may be wrapped about a layer of slats. The outer cable wrapped layer may be surrounded by an outer cover. An end sub may serve to couple the downhole packer element to a mandrel.
A downhole packer element includes an inner and outer cable wrapped layer positioned about an inflatable bladder. The inner and outer cable wrapped layers are formed from helically wrapped, parallel cables. The inner cable wrapped layer may be wrapped about a layer of slats. The outer cable wrapped layer may be surrounded by an outer cover. An end sub may serve to couple the downhole packer element to a mandrel.
A temperature actuated element includes a mandrel, a housing coupled to the mandrel, the housing defining a fluid expansion chamber. A piston is positioned within the fluid expansion chamber. A thermally expanding fluid is positioned within the fluid expansion chamber. An end ring coupled to the piston slides along the mandrel in response to a sliding of the piston. A degradable ring is coupled to the mandrel to prevent movement of the end ring before the degradable ring is dissolved. A packer having a first end and a second end, the first end adapted to slide along the mandrel in response to a sliding of the end ring, and the second end fixedly coupled to the mandrel, so that a sliding of the first end of the packer toward the second end causes the packer element to decrease in length and increase in radius.
E21B 23/06 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour le montage des packers
E21B 29/02 - Découpage ou destruction de tubes, packers, bouchons ou câbles, situés dans les trous de forage ou dans les puits, p. ex. découpage de tubes endommagés, de fenêtresDéformation des tubes dans les trous de forageRemise en état des tubages de puits sans les retirer du sol au moyen d'explosifs ou par des moyens thermiques ou chimiques
E21B 33/128 - PackersBouchons avec un organe dilaté radialement par pression axiale
E21B 23/04 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage mis en œuvre à l'aide de moyens fluides, p. ex. actionnés par explosion
A valve collar for use with a fluid actuated downhole tool includes a mandrel having one or more valve cylinders formed in the wall thereof, the valve cylinders formed at an angle to the mandrel. The valve cylinders may be connected to each other, to the interior of the mandrel, and to the fluid actuated downhole tool through end holes, slant shell holes, and radial holes. Each valve cylinder may include a valve assembly inserted thereinto.
A valve collar for use with a fluid actuated downhole tool includes a mandrel having one or more valve cylinders formed in the wall thereof, the valve cylinders formed at an angle to the mandrel. The valve cylinders may be connected to each other, to the interior of the mandrel, and to the fluid actuated downhole tool through end holes, slant shell holes, and radial holes. Each valve cylinder may include a valve assembly inserted thereinto.
According to one aspect of the disclosure, a hydraulic cycle opening sleeve includes a valve assembly and an opening assembly. The valve assembly includes at least one valve chamber and valve piston positioned to move in response to fluid pressure. The opening assembly includes a sliding piston to selectively open or close the hydraulic cycle opening sleeve.
E21B 34/10 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits actionnés par un fluide de commande provenant de l'extérieur du trou de forage
E21B 34/14 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits actionnés par le mouvement des outils, p. ex. obturateurs à manchons actionnés par des pistons ou par des outils à câble
E21B 34/00 - Aménagements des vannes pour les trous de forage ou pour les puits
According to one aspect of the disclosure, a hydraulic cycle opening sleeve includes a valve assembly and an opening assembly. The valve assembly includes at least one valve chamber and valve piston positioned to move in response to fluid pressure. The opening assembly includes a sliding piston to selectively open or close the hydraulic cycle opening sleeve.
E21B 34/10 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits actionnés par un fluide de commande provenant de l'extérieur du trou de forage
A time actuated element includes a mandrel, a housing coupled to the mandrel, the housing defining a fluid expansion chamber. A piston is positioned within the fluid expansion chamber. A thermally expanding fluid is positioned within the fluid expansion chamber. An end ring coupled to the piston slides along the mandrel in response to a sliding of the piston. A packer having a first end and a second end, the first end adapted to slide along the mandrel in response to a sliding of the end ring, and the second end fixedly coupled to the mandrel, so that a sliding of the first end of the packer toward the second end causes the packer element to decrease in length and increase in radius.
A method for anchoring a casing string within a wellbore is disclosed. The method includes providing a casing string, where the casing string being generally tubular, and coupling a swellable elastomeric material on at least a portion of the exterior of the casing string. In addition, the method includes positioning the casing string within a wellbore, exposing the swellable elastomeric material to a swelling fluid, and sealing the swellable elastomeric material to the wellbore.
A swellable packer which includes a generally tubular mandrel having a central axis and an exterior cylindrical surface. The swellable packer further includes a swellable elastomeric body fixed to the exterior cylindrical surface of the mandrel, wherein the swellable elastomeric body includes a plurality of grooves and wherein the generally tubular elastomeric sleeve has a circumference and a thickness.
A time actuated element includes a mandrel, a housing coupled to the mandrel, the housing defining a fluid expansion chamber. A piston is positioned within the fluid expansion chamber. A thermally expanding fluid is positioned within the fluid expansion chamber. An end ring coupled to the piston slides along the mandrel in response to a sliding of the piston. A packer having a first end and a second end, the first end adapted to slide along the mandrel in response to a sliding of the end ring, and the second end fixedly coupled to the mandrel, so that a sliding of the first end of the packer toward the second end causes the packer element to decrease in length and increase in radius.
E21B 23/06 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour le montage des packers
E21B 33/128 - PackersBouchons avec un organe dilaté radialement par pression axiale
E21B 23/04 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage mis en œuvre à l'aide de moyens fluides, p. ex. actionnés par explosion
A swellable packer which includes a generally tubular mandrel having a central axis and an exterior cylindrical surface. The swellable packer further includes a swellable elastomeric body fixed to the exterior cylindrical surface of the mandrel, wherein the swellable elastomeric body includes a plurality of grooves and wherein the generally tubular elastomeric sleeve has a circumference and a thickness.
A method for anchoring a casing string within a wellbore is disclosed. The method includes providing a casing string, where the casing string being generally tubular, and coupling a swellable elastomeric material on at least a portion of the exterior of the casing string. In addition, the method includes positioning the casing string within a wellbore, exposing the swellable elastomeric material to a swelling fluid, and sealing the swellable elastomeric material to the wellbore.
E21B 23/01 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour ancrer les outils ou similaires
A downhole valve for fluid energized packers includes a valve sub and a packer. The valve sub further includes a control tube and a rotatable ball, the control tube having at least one closable aperture fluidly coupled to the packer when open, and the rotatable ball rotatable about an axle having at least one flow path closable by a rotation of the ball. The rotatable ball rotates about an axle coupled to a shift sleeve coupled to the lower end of the control tube. The rotatable ball includes a rotation pin extending from its outer surface and a rotation pin sleeve is adapted to rotate the ball in response to a movement of the ball toward or away from the rotation pin sleeve.
E21B 34/12 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits actionnés par le mouvement des tubages ou des colonnes de production
E21B 23/06 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour le montage des packers
A hydraulic anchor is coupled to a packer subassembly of a tool string. The hydraulic anchor, when actuated by fluid pressure, engages the surrounding wellbore, holding the tool string in place within the wellbore. A packer may then be actuated, held in position within the wellbore by the hydraulic anchor. In some embodiments, an inflatable packer may be held in the desired location by the hydraulic anchor. In some embodiments, a straddle packer assembly may be held in place by the hydraulic anchor. In some embodiments, a swellable packer may be held in place during the swelling process by the hydraulic anchor.
A hydraulic anchor is coupled to a packer subassembly of a tool string. The hydraulic anchor, when actuated by fluid pressure, engages the surrounding wellbore, holding the tool string in place within the wellbore. A packer may then be actuated, held in position within the wellbore by the hydraulic anchor. In some embodiments, an inflatable packer may be held in the desired location by the hydraulic anchor. In some embodiments, a straddle packer assembly may be held in place by the hydraulic anchor. In some embodiments, a swellable packer may be held in place during the swelling process by the hydraulic anchor.
E21B 23/01 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour ancrer les outils ou similaires
A downhole valve for fluid energized packers includes a valve sub and a packer. The valve sub further includes a control tube and a rotatable ball, the control tube having at least one closable aperture fluidly coupled to the packer when open, and the rotatable ball rotatable about an axle having at least one flow path closable by a rotation of the ball. The rotatable ball rotates about an axle coupled to a shift sleeve coupled to the lower end of the control tube. The rotatable ball includes a rotation pin extending from its outer surface and a rotation pin sleeve is adapted to rotate the ball in response to a movement of the ball toward or away from the rotation pin sleeve.
[Metal casings used to stabilize the wellbore in oil and gas wells; Oil and gas well downhole equipment not being parts of machines, namely, manually operated metal ball valves for downhole fracing tools] Oil and gas well completion power tools, namely, sleeves designed to allow for injection into formation; Oil well equipment, namely, swellable downhole packers for use in controlling the flow and movement of fluids; Oil and gas well fracturing power tools, namely, packers for controlling pressure or fluids downhole for zone isolation and one or more fluid control valves; Oil and gas drilling, production, or well installation equipment, namely, packers for testing pressure integrity of downhole or surface tools and equipment Oil and gas well equipment, namely, bridge plugs [and fracturing plugs] composed of plastic and synthetic rubber for controlling pressure or fluids downhole
(1) Inflatable and swellable downhole packers for use in oil and gas wells.
(2) Oil well equipment, namely, inflatable and swellable downhole packers for use in controlling the flow and movement of fluids.
A swellable downhole packer (10) is provided for positioning downhole in a well to seal with the interior surface of a borehole or the interior surface of a downhole tubular. The packer includes a swellable elastomeric sleeve-shaped body (14) positioned over a mandrel (12) for swelling, and a rigid end ring (16,18). An elastomeric anti-extrusion member (20) is spaced axially between the sleeve-shaped body and the rigid end ring, and has a radial thickness adjacent the end ring greater than the radial thickness adjacent the sleeve-shaped body. A swellable elastomeric member (32) is spaced radially between the exterior surface of the mandrel and the elastomeric anti-extrusion member.
A swellable packer (10) includes upper and lower end rings (20, 22) and elastomeric bodies (12, 14) spaced between the upper and lower end rings to expand and thereby close off an annulus about the downhole tubular. The elastomeric body may be positioned such that a slot (26) in the body receives a control line (28).
E21B 23/06 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour le montage des packers
(1) Oilfield equipment, namely, oil fracing equipment.
(2) Oil and gas well fracturing power tools, namely, packers for controlling pressure or fluids downhole for zone isolation and one or more fluid control valves.
A method of pressure testing a lower marine riser package includes forming an inflatable packer having exposed slats and an inflatable packer element. The packer is positioned within the lower marine riser package above the cap seal with the exposed slats above the packer element. The packer is inflated and fluid pressure is then applied to test the integrity of the cap seal. The packer may be inverted, then positioned below the BOP/riser connection, the packer inflated, and pressure increased above the inflated packer element to test the fluid integrity of the BOP/riser connection.
E21B 33/035 - Têtes de puitsLeur mise en place spécialement adaptées aux installations sous l'eau
E21B 43/01 - Procédés ou dispositifs pour l'extraction de pétrole, de gaz, d'eau ou de matériaux solubles ou fusibles ou d'une suspension de matières minérales à partir de puits spécialement adaptés à l'extraction à partir d'installations sous l'eau
A geothermal liner system with packer for sealing a producing zone within a wellbore has a mandrel placed in an interior of the wellbore, a packer releasably affixed around an outer surface of the mandrel, and a sleeve positioned adjacent an end of the mandrel. The liner system is generally tubular and may include joint casings and a mandrel, all being tubular-shaped. The packer is expandable upon exposure to wellbore conditions. The sleeve has perforations in a wall thereof. The mandrel is slidable relative to the packer when the packer expands against the wellbore. The sleeve is selectively controlled to manage production from sealed wellbore zones. The system is stabilized through various wellbore conditions, such as geothermal heat, by being adjustable for thermal expansion of parts of the system.
A swellable downhole packer (10) is provided for positioning downhole in a well to seal with the interior surface of a borehole or the interior surface of a downhole tubular. The packer includes a swellable elastomeric sleeve-shaped body (14) positioned over a mandrel (12) for swelling, and a rigid end ring (16,18). An elastomeric anti-extrusion member (20) is spaced axially between the sleeve-shaped body and the rigid end ring, and has a radial thickness adjacent the end ring greater than the radial thickness adjacent the sleeve-shaped body. A swellable elastomeric member (32) is spaced radially between the exterior surface of the mandrel and the elastomeric anti-extrusion member.
E21B 23/00 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage
A high temperature packer (10) force a tubular string in a well, and includes a packer mandrel (12) and an elastomeric packer body (14) positioned circumferentially about the mandrel. An upper packer head (16) and a lower packer head (18) are each positioned about the mandrel and secured to an end of the packer body. A connector (24) axially interconnects at least one of the upper packer head and lower packer head to the packer mandrel, and a temperature responsive member (30) maintains the connector in position to secure the packer head to the mandrel until the temperature in the well rises to a level such that the responsive member yields to allow the connector to release the packer head from the mandrel.
(1) Oil and gas drilling and production equipment, namely, downhole packers installed on casing joints or casing materials for use in stopping fluid migration, to support fluid columns downhole, and to separate fluids from different wells.
A float collar 10 includes a housing 12 and a generally sleeve-shaped elastomer 20. The lower plate 30 and an upper plate 32 are each supported on an elongate rod 22, and at least one of the plates is axially fixed relative to the tubular housing. The plate intended for exposure to fluid pressure includes a plurality of arcuate flow ports 34 for communication with the annulus between the tubular housing and the elastomer prior to swelling of the elastomer.
oil and gas drilling and production equipment, namely, downhole packers installed on casing joints or casing materials for use in stopping fluid migration, to support fluid columns downhole, and to separate fluids from different wells
