Method of using crosslinkable brine containing compositions
First Claim
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1. A method for enhancing the thermal insulation of a production tubing or transfer pipe surrounded by at least one annuli in an oil, gas or geothermal well, comprising:
- (a) adding to the at least one annuli a pumpable polymerizable fluid comprising a crosslinkable, monofunctional alkene, a multi-functional alkene, a heat inducible free radical initiator and brine;
(b) decomposing the heat inducible free radical initiator; and
(c) increasing the viscosity of the pumpable polymerizable fluid while maintaining the fluid in contact with the at least one annuli to form a crosslinked hydrated polymer system in the brine.
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Abstract
A method of enhancing the productivity of a subterranean formation penetrated by a gas, oil or geothermal well consists of introducing into the formation and/or well a pumpable polymerizable fluid comprising a crosslinkable, monofunctional alkene, multi-functional alkene (such as a difunctional alkene), a heat inducible free radical initiator and brine. The fluid may be used in the thermal insulation of production tubing or transfer pipes and hydraulic fracturing.
30 Citations
28 Claims
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1. A method for enhancing the thermal insulation of a production tubing or transfer pipe surrounded by at least one annuli in an oil, gas or geothermal well, comprising:
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(a) adding to the at least one annuli a pumpable polymerizable fluid comprising a crosslinkable, monofunctional alkene, a multi-functional alkene, a heat inducible free radical initiator and brine; (b) decomposing the heat inducible free radical initiator; and (c) increasing the viscosity of the pumpable polymerizable fluid while maintaining the fluid in contact with the at least one annuli to form a crosslinked hydrated polymer system in the brine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for reducing convection flow velocity in at least one annuli surrounding a production tubing or transfer pipe in an oil, gas or geothermal well, comprising:
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(a) introducing into the at least one annuli an insulating packer or riser fluid comprising a fluid comprising a crosslinkable, mono functional alkene, a multi-functional alkene, a heat inducible free radical initiator and brine; and (b) decomposing the free radical initiator; (c) increasing the viscosity of the insulating packer or riser fluid by forming a crosslinked polymer in the brine; and (d) maintaining the fluid in the at least one annuli until the convection flow velocity is reduced. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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24. A method for enhancing the thermal insulation of a production tubing or transfer pipe surrounded by at least one annuli in an oil, gas or geothermal well, comprising:
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(a) adding to the at least one annuli a pumpable polymerizable fluid comprising a crosslinkable, monofunctional alkene, a difunctional alkene, a heat inducible free radical initiator and brine having a density between 9 to 19.2 ppg; (b) decomposing the heat inducible free radical initiator; and (c) increasing the viscosity of the pumpable polymerizable fluid while maintaining the fluid in contact with the at least one annuli to form a crosslinked hydrated polymer system in the brine. - View Dependent Claims (25, 26, 27, 28)
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Specification