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US 2018/0179119 A1Published application
High Temperature Energetic Formulations
AssigneesSuperior Energy Services, LLC, Los Alamos National Security, LLC
InventorsBarry K. Holder, Gabriel Avilucea, Philip Leonard
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Abstract
A formulation for a composite propellant including an oxidant suspended or embedded in a binder matrix, and the binder matrix having a cured or partially cured binder precursor including two or more functional groups.
Claims21
A formulation for a composite propellant comprising an oxidant suspended or embedded in a binder matrix, wherein:
- (a) the oxidant comprises a nitrate anion, a perchlorate anion, a chlorate anion, a permanganate anion, a peroxide anion, or a mixture thereof, and the oxidant being included in an amount of about 50 wt % to about 85 wt %, based on 100 wt % of the formulation for the composite propellant;
- (b) the binder matrix comprising a cured or partially cured binder precursor comprising at least one of, a glycidyl azide polymer (GAP), a hydroxyl-terminated dimethyl polysiloxane (PDMS), a R45M hydroxyl-terminated polybutadiene (HTPB), a polybutadiene acrylonitrile (PBAN), or a mixture thereof, the binder matrix being included in an amount of about 5 wt % to about 28 wt %, based on 100 wt % of the formulation for the composite propellant;
- and
- (c) the formulation further comprises a crosslinker including two or more functional groups selected to complement the two or more functional groups of the binder precursor.
1 more element
A method of preparing a composite propellant, comprising:
- mixing an oxidant and a binder precursor to form a putty in which the oxidant is suspended or embedded in a binder matrix formed from the binder precursor;
- shaping the putty;
- and curing the putty at a temperature of 5° C. or higher.
A method of stimulating a subterranean hydrocarbon-containing formation comprising the steps of:
- (a) positioning a stimulation tool into a wellbore formed through the formation, the stimulation tool comprising:
- (i) at least one tubular segment;
- (ii) an outer sleeve positioned on the tubular segment;
- (iii) a propellant positioned within the sleeve;
- (iv) an ignitor positioned to ignite the propellant;
- (v) wherein the propellant comprises an oxidant suspended or embedded in a binder matrix, wherein:
- (1) the oxidant comprises a nitrate anion, a perchlorate anion, a chlorate anion, a permanganate anion, a peroxide anion, or a mixture thereof, and the oxidant being included in an amount of about 50 wt % to about 85 wt %, based on 100 wt % of the formulation for the composite propellant;
- (2) the binder matrix comprising a cured or partially cured binder precursor comprising at least one of, a glycidyl azide polymer (GAP), a hydroxyl-terminated dimethyl polysiloxane (PDMS), a R45M hydroxyl-terminated polybutadiene (HTPB), a polybutadiene acrylonitrile (PBAN), or a mixture thereof, the binder matrix being included in an amount of about 5 wt % to about 28 wt %, based on 100 wt % of the formulation for the composite propellant ;
- and
- (3) the formulation further comprises a crosslinker including two or more functional groups selected to complement the two or more functional groups of the binder precursor.
- (b) igniting the propellant to begin deflagration of the propellant.
8 more elements
21-25. (canceled)
Dependencies are inferred from the claim text.