Flow Reversing Apparatus and Methods of Use
OwnerMichael H. Kenison, Michael G. Gay +2inventors
InventorsMichael H. Kenison, Michael G. Gay, Robert Bucher, Mahmuda Afroz
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Abstract
Apparatus and methods for selectively and safely reversing flow in coiled tubing used for wellbore cleanouts are disclosed. One apparatus includes a section of coiled tubing having a main flow channel, at least two flow-preventing valves in the section of coiled tubing, each adapted to close the main flow channel upon attempted flow reversal; and at least one actuator adapted to deter closing of the flow-preventing valves. This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).
Claims21
1-35. (canceled)
A method of actuating a component deployed in a well bore, comprising:
- inserting a tool into a well bore on a conveyance, the tool comprising at least one hydraulic system;
- initiating flow of a fluid into the well bore;
- charging the hydraulic system of the tool with the fluid flow, the hydraulic system storing hydraulic pressure therein;
- and
- releasing the stored hydraulic pressure to actuate at least a component of the tool.
The method of claim 41 wherein the predetermined pressure is referenced to pressure in an annulus between the conveyance and the well bore.
A method of actuating a component deployed in a well, comprising:
- inserting a tool into a well bore on coiled tubing, the tool comprising at least one hydraulic system;
- initiating flow of a fluid into the well;
- charging the hydraulic system of the tool with the fluid flow, the hydraulic system storing hydraulic pressure therein;
- and
- releasing the stored hydraulic pressure to actuate at least a component of the tool.
The method of claim 51 further comprising detecting a one of hydrocarbon and chemicals in the fluid flow.
Dependencies are inferred from the claim text.