Sand removal and device retrieval tool
First Claim
1. A tool for removing debris from a well, comprising:
- an upper tubular portion defining a pathway for the downward flow of power fluid from a pipe thereabove;
a restriction portion for increasing the velocity of the power fluid and a return fluid and creating an area of low pressure therearound, the restriction portion includes a nozzle portion, a throat portion, and a diffuser portion as a single unit;
a diverter portion for directing the high velocity power fluid and return fluid;
a debris storage container to retain debris urged therein due to a suction created thereabove;
a retaining member at a lower end of the container to prevent debris from falling out of the container; and
a filter member disposed between the retaining member and the restriction portion.
6 Assignments
0 Petitions
Accused Products
Abstract
The present invention provides a simple debris removal apparatus for use in a wellbore. In one aspect of the invention a modular, interchangeable venturi is provided which can be retrofit into an existing debris bailer having a filter and a debris collection container. In another aspect of the invention, a venturi is utilized to create a negative pressure in a wellbore sufficient to actuate a retrieval tool for a downhole device. In yet another aspect of the invention, a combination tool is provided which can evacuate debris in a wellbore, thereby uncovering a downhole device which can then be removed in a single trip. In yet another aspect of the invention, a debris removal apparatus is provided with a method for utilizing the apparatus in a wellbore on coiled tubing.
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Citations
35 Claims
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1. A tool for removing debris from a well, comprising:
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an upper tubular portion defining a pathway for the downward flow of power fluid from a pipe thereabove;
a restriction portion for increasing the velocity of the power fluid and a return fluid and creating an area of low pressure therearound, the restriction portion includes a nozzle portion, a throat portion, and a diffuser portion as a single unit;
a diverter portion for directing the high velocity power fluid and return fluid;
a debris storage container to retain debris urged therein due to a suction created thereabove;
a retaining member at a lower end of the container to prevent debris from falling out of the container; and
a filter member disposed between the retaining member and the restriction portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
a body disposed below the container;
a slidable member engaging the body and having an extended and retracted positions with respect to the body;
a biasing member biasing the slidable member in the extended position; and
a piston surface formed at a downhole end of the slidable member, the piston surface, when acted upon by a force, urging the slidable member into the retracted position.
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8. The tool of claim 7, wherein the force acting upon the piston surface is a force created by the restriction portion disposed thereabove.
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9. The tool of claim 7, further including a collet member disposed around the slidable member, the collet member including at least one finger formed at a downhole end thereof, the at least one finger prevented from inward movement by the slidable member when the slidable member is in the extended position.
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10. The tool of claim 1, wherein the throat has an area larger than an area of the nozzle.
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11. The tool of claim 1, wherein a fluid in the debris storage container is discharged through the diverter portion.
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12. The tool of claim 1, wherein the restriction portion is disposed above the diverter portion.
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13. The tool of claim 1, wherein the diffuser portion directs the high velocity power fluid and return fluid to the diverter portion.
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14. The tool of claim 1, wherein a fluid in the debris storage container is discharged through the restriction portion.
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15. The tool of claim 1, further comprising:
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a body disposed below the container;
a slidable member engaging the body and having an extended and retracted positions with respect to the body;
a biasing member biasing the slidable member in the extended position; and
a piston surface formed at a downhole end of the slidable member, the piston surface, when acted upon by a force, urging the slidable member into the retracted position.
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16. The tool of claim 15, wherein the force acting upon the piston surface is a force created by the restriction portion disposed thereabove.
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17. The tool of claim 15, further including a collet member disposed around the slidable member, the collet member including at least one finger formed at a downhole end thereof, the at least one finger prevented from inward movement by the slidable member when the slidable member is in the extended position.
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18. The tool of claim 17, wherein the at least one finger is constructed and arranged to contact a profile formed on a inside surface of a downhole tool and the at least one finger is insertable into the profile when the slidable member is in the retracted position.
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19. The tool of claim 17, wherein the at least one finger is fixed within the profile when the slidable member is in the extended position.
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20. The tool of claim 17, wherein the collet member is disposed within the slidable member and the at least one finger is prevented form outward movement by the slidable member.
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21. The tool of claim 20, wherein the at least one finger contacts a profile formed in the outside surface of a downhole tool.
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22. A tool for removing debris from a well, comprising:
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an upper tubular portion defining a pathway for the downward flow of power fluid from a pipe thereabove;
a selectively removable restriction portion having a nozzle portion, a throat portion, and a diffuser portion as a single unit;
a debris storage container to retain debris urged therein due to a suction created thereabove;
a retaining member at a lower end of the container to prevent debris from falling out of the container; and
a filter member disposed between the retaining member and the restriction portion.
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23. A tool for removing debris from a well, comprising:
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an upper tubular portion defining a pathway for the downward flow of power fluid from a pipe thereabove;
a restriction portion for increasing the velocity of the power fluid and a return fluid and creating an area of low pressure therearound, the restriction portion includes a nozzle portion, a throat portion, and a diffuser portion;
a diverter portion for directing the high velocity power fluid and return fluid;
a debris storage container to retain debris urged therein due to a suction created thereabove;
a retaining member at a lower end of the container to prevent debris from falling out of the container;
a body disposed below the container;
a slidable member engaging the body and having an extended and retracted positions with respect to the body;
a biasing member biasing the slidable member in the extended position; and
a piston surface formed at a downhole end of the slidable member, the piston surface, when acted upon by a force, urging the slidable member into the retracted position.- View Dependent Claims (24, 25, 26, 27, 28, 29, 30)
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31. An apparatus for use in a well, comprising;
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an upper tubular portion defining a pathway for the downward flow of power fluid from a pipe thereabove;
a restriction portion for increasing the velocity of the power fluid and a return fluid and creating an area of low pressure therearound;
a diverter portion for directing the high velocity power fluid and return fluid;
a debris storage container to retain debris urged therein due to a suction created thereabove;
a retaining member at a lower end of the container to prevent debris from falling out of the container; and
a tool removably disposed below the container, wherein the tool is actuatable using a force created by the restriction portion. - View Dependent Claims (32, 33, 34, 35)
a body disposed below the container;
a slidable member engaging the body and having an extended and retracted positions with respect to the body;
a biasing member biasing the slidable member in the extended position; and
a piston surface formed at a downhole end of the slidable member, the piston surface, when acted upon by a force, urging the slidable member into the retracted position.
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34. The apparatus of claim 33, wherein the force acting upon the piston surface is a force created by the restriction portion disposed thereabove.
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35. The apparatus of claim 33, further including a collet member disposed around the slidable member, the collet member including at least one finger formed at a downhole end thereof, the at least finger prevented from inward movement by the slidable member when the slidable member is in the extended position.
Specification