In situ pump for downhole applications
First Claim
1. An apparatus for providing pressurized fluid, comprising:
- a power source body configured to contain a gas-generating fuel;
a tool body comprising a first chamber and a second chamber, wherein the first chamber is configured to hold a fluid, and the second chamber is configured to receive gas from the gas-generating fuel within the power source body;
a displacement member sealed between the first chamber and the second chamber and configured to stroke through the first chamber in response to a pressure increase within the second chamber, wherein the displacement member strokes from a first inside diameter of the tool body to a second inside diameter of the tool body that is longitudinally disposed with respect to the first inside diameter, and wherein the second inside diameter is greater than the first inside diameter and when the displacement member strokes the seal between the first chamber and the second chamber of the tool body releases; and
a hose configured to generate a high-pressure jet of the fluid and to extend from the tool body, a diverter sub, or combinations thereof, when or after the displacement member is displaced or strokes through the first chamber for providing the pressurized fluid.
1 Assignment
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Accused Products
Abstract
An apparatus for providing pressurized fluid to a formation that includes a power source body configured to contain a gas-generating fuel and a tool body comprising a first chamber and a second chamber. The first chamber is configured to hold a fluid, and the second chamber is configured to receive gas from the gas-generating fuel within the power source body. The apparatus further comprises a piston sealed between the first chamber and the second chamber and configured to stroke through the first chamber in response to a pressure increase within the second chamber, and a hose configured to generate a high-pressure jet of the fluid and to extend from the tool body or a diverter sub into the formation when the piston strokes through the first chamber.
11 Citations
30 Claims
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1. An apparatus for providing pressurized fluid, comprising:
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a power source body configured to contain a gas-generating fuel; a tool body comprising a first chamber and a second chamber, wherein the first chamber is configured to hold a fluid, and the second chamber is configured to receive gas from the gas-generating fuel within the power source body; a displacement member sealed between the first chamber and the second chamber and configured to stroke through the first chamber in response to a pressure increase within the second chamber, wherein the displacement member strokes from a first inside diameter of the tool body to a second inside diameter of the tool body that is longitudinally disposed with respect to the first inside diameter, and wherein the second inside diameter is greater than the first inside diameter and when the displacement member strokes the seal between the first chamber and the second chamber of the tool body releases; and a hose configured to generate a high-pressure jet of the fluid and to extend from the tool body, a diverter sub, or combinations thereof, when or after the displacement member is displaced or strokes through the first chamber for providing the pressurized fluid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus for jet-drilling a downhole production formation, comprising:
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a tool body configured to be placed in a cased and perforated wellbore within the downhole production formation; at least one chamber within the tool body configured to contain a fluid; a piston initially positioned at one end of the at least one chamber and configured to stroke through a length of the at least one chamber; and a jet-drilling nozzle, wherein the stroking of the piston forces the fluid through the jet-drilling nozzle and into the downhole production formation, and wherein the piston is configured to enable a release of high-pressure gas into the downhole production formation after the fluid is forced into the downhole production formation. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method of generating a jet of high pressure fluid within a wellbore, comprising:
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activating a gas-generating fuel contained within a fuel chamber of a downhole tool to produce an expanding gas; pressurizing a gas-expansion chamber of the downhole tool with the expanding gas; stroking a displacement member through a fluid chamber configured to hold a fluid, wherein the displacement member strokes due to pressurizing of the gas-expansion chamber and causes pressurizing of the fluid; and jetting the fluid out of an outlet of the downhole tool in response to the pressurizing of the fluid, wherein the jetting of the fluid creates a bore in a production formation surrounding the wellbore; removing a jet-drilling nozzle from the outlet by passing a solid material through the hose, passing a metallic material through the hose, passing an acid through the hose, or combinations thereof; and releasing the expanding gas after removing the jet-drilling nozzle. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26)
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27. A method of generating a jet of high pressure fluid within a wellbore, comprising:
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activating a gas-generating fuel contained within a fuel chamber of a downhole tool to produce an expanding gas; pressurizing a gas-expansion chamber of the downhole tool with the expanding gas; stroking a piston through a fluid chamber configured to hold a fluid, wherein the piston strokes due to pressurizing of the gas-expansion chamber; jetting the fluid out of an outlet of the downhole tool in response to the stroking of the piston, wherein the jetting of the fluid creates a bore in a production formation surrounding the wellbore; and releasing the expanding gas from the outlet after the fluid has been jetted by releasing the expanding gas through the piston, releasing the expanding gas around the piston, or combinations thereof.
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28. An apparatus for providing pressurized fluid, comprising:
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a power source body configured to contain a gas-generating fuel; a tool body comprising a first chamber and a second chamber, wherein the first chamber is configured to hold a fluid, and the second chamber is configured to receive gas from the gas-generating fuel within the power source body; a displacement member sealed between the first chamber and the second chamber and configured to stroke through the first chamber in response to a pressure increase within the second chamber; a hose configured to generate a high-pressure jet of the fluid and to extend from the tool body, a diverter sub, or combinations thereof, when or after the displacement member is displaced or strokes through the first chamber for providing the pressurized fluid; and a vent or a valve configured to release the gas from the second chamber through the hose when the displacement member strokes or is displaced.
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29. An apparatus for jet-drilling a downhole production formation, comprising:
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a tool body configured to be placed in a cased and perforated wellbore within the downhole production formation; at least one chamber within the tool body configured to contain a fluid, a material or combinations thereof; a piston initially positioned at one end of the at least one chamber and configured to stroke through a length of the at least one chamber; and a jet-drilling nozzle, wherein the stroking of the piston forces the fluid through the jet-drilling nozzle and into the downhole production formation, wherein the jet-drilling nozzle is configured to be removed from the apparatus by passing a solid material through the hose, passing a metallic material through the hose, passing an acid through the hose, or combinations thereof.
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30. A method of generating a jet of high pressure fluid within a wellbore, comprising:
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activating a gas-generating fuel contained within a fuel chamber of a downhole tool to produce an expanding gas; pressurizing a gas-expansion chamber of the downhole tool with the expanding gas; stroking a displacement member through a fluid chamber configured to hold a fluid, wherein the displacement member strokes due to pressurizing of the gas-expansion chamber and causes pressurizing of the fluid; and jetting the fluid out of an outlet of the downhole tool in response to the pressurizing of the fluid, wherein the jetting of the fluid creates a bore in a production formation surrounding the wellbore, and wherein the production formation is stimulated by releasing the expanding gas from the outlet after the fluid has been jetted.
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Specification