Active mud valve system
First Claim
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1. A pumping apparatus of a downhole tool, comprising:
- a body having a cavity housing a reciprocating piston defining first and second chambers within the cavity, andan active valve block comprising a plurality of active valves, wherein the plurality of active valves includes a first active valve fluidly connected to the first chamber of the body, the plurality of active valves includes a second active valve fluidly connected to the second chamber of the body, and each of the plurality of active valves is configured to be actively actuated between open and closed positionswherein the plurality of active valves further comprises a third active valve fluidly connected to the first chamber of the body, the plurality of active valves further comprises a fourth active valve fluidly connected to the second chamber of the body, and the pumping apparatus further comprises;
a hydraulic pump;
a first solenoid valve fluidly connected between the hydraulic pump and each of the first, second, third and fourth active valves; and
a second solenoid valve fluidly connected between the hydraulic pump and each of he first, second, third and fourth active valves.
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Abstract
A downhole tool pumping apparatus comprising a body and an active valve block. The body comprises a cavity housing a reciprocating piston defining first and second chambers within the cavity. The active valve block comprises a plurality of active valves, wherein the plurality of active valves includes a first active valve fluidly connected to the first chamber of the body, the plurality of active valves includes a second active valve fluidly connected to the second chamber of the body, and each of the plurality of active valves is configured to be actively actuated between open and closed positions.
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Citations
14 Claims
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1. A pumping apparatus of a downhole tool, comprising:
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a body having a cavity housing a reciprocating piston defining first and second chambers within the cavity, and an active valve block comprising a plurality of active valves, wherein the plurality of active valves includes a first active valve fluidly connected to the first chamber of the body, the plurality of active valves includes a second active valve fluidly connected to the second chamber of the body, and each of the plurality of active valves is configured to be actively actuated between open and closed positions wherein the plurality of active valves further comprises a third active valve fluidly connected to the first chamber of the body, the plurality of active valves further comprises a fourth active valve fluidly connected to the second chamber of the body, and the pumping apparatus further comprises; a hydraulic pump; a first solenoid valve fluidly connected between the hydraulic pump and each of the first, second, third and fourth active valves; and a second solenoid valve fluidly connected between the hydraulic pump and each of he first, second, third and fourth active valves. - View Dependent Claims (2, 3)
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4. A pumping apparatus of a downhole tool, comprising:
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a body having a cavity housing a reciprocating piston defining first and second chambers within the cavity; and an active valve block comprising a plurality of active valves, wherein the plurality of active valves includes a first active valve fluidly connected to the first chamber of the body, the plurality of active valves includes a second active valve fluidly connected to the second chamber of the body, and each of the plurality of active valves is configured to be actively actuated between open and closed positions wherein the plurality of active valves further comprises a third active valve fluidly connected to the first chamber of the body, the plurality of active valves further comprises a fourth active valve fluidly connected to the second chamber of the body, and the pumping apparatus further comprises; a hydraulic pump; a first solenoid valve fluidly connected between the hydraulic pump and each of the first and fourth active valves; a second solenoid valve fluidly connected between the hydraulic pump and each of the second and third active valves; a third solenoid valve fluidly connected between the hydra pump and each of the first and fourth active valves; and a fourth solenoid valve fluidly connected between the hydraulic pump and each of the second and third active valves. - View Dependent Claims (5, 6)
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7. A pumping apparatus of a downhole tool, comprising:
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a body having a cavity housing a reciprocating piston defining first and second chambers within the cavity; and an active valve block comprising a plurality of active valves, wherein the plurality of active valves includes a first active valve fluidly connected to the first chamber of the body, the plurality of active valves includes a second active valve fluidly connected to the second chamber of the body, and each of the plurality of active valves is configured to be actively actuated between open and closed positions wherein the cavity of the body comprises first and second cavities, the first cavity comprises the first chamber, the second cavity comprises the second chamber, a first portion of the piston divides the first cavity into the first chamber and a third chamber, and a second portion of the piston divides the second cavity into the second chamber and a fourth chamber further comprising a four-way valve having a first port fluidly connected to a hydraulic pump, a second port fluidly connected to a hydraulic reservoir, a third port fluidly connected to the third chamber of the body, and a fourth port fluidly connected to the fourth chamber of the body. - View Dependent Claims (8, 9, 10)
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11. A pumping apparatus of a downhole tool, comprising:
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a body having a cavity housing a reciprocating piston defining first and second chambers within the cavity; and an active valve block comprising a plurality of active valves, wherein the plurality of active valves includes a first active valve fluidly connected to the first chamber of the body, the plurality of active valves includes a second active valve fluidly connected to the second chamber of the body, and each of the plurality of active valves is configured to be actively actuated between open and closed positions wherein the cavity of the body comprises first and second cavities, the first cavity comprises the first chamber, the second cavity comprises the second chamber, a first portion of the piston divides the first cavity into the first chamber and a third chamber, and a second portion of the piston divides the second cavity into the second chamber and a fourth chamber further comprising a first poppet valve fluidly connected between the hydraulic pump and the third chamber of the body, a second poppet valve fluidly connected between the hydraulic pump and the fourth chamber of the body, a third poppet valve fluidly connected between the fourth chamber of the body and a hydraulic reservoir, and a fourth poppet valve fluidly connected between the third chamber of the body and the wellbore annulus. - View Dependent Claims (12, 13, 14)
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Specification