Abstract: A method for recompleting a well is applied to a well such that the recompleted well can thermally transfer geothermal energy to surface. The recompleting method can comprise steps to hydraulically isolate a wellbore using a hydraulic isolation means, and enhance the thermal conductivity of a reservoir in which the wellbore is located by inserting a thermal material into the reservoir that displaces a reservoir fluid having a lower thermal conductivity than the thermal material.

Abstract: A method for recompleting a well is applied to a well such that the recompleted well can thermally transfer geothermal energy to surface. The recompleting method can comprise steps to enhance the thermal conductivity of a wellbore of a hydrocarbon well, by inserting a thermal material into the wellbore that displaces a reservoir fluid having a lower thermal conductivity than the thermal material. The recompleting method can also comprise steps to enhance the thermal conductivity of a reservoir in which the wellbore is located by inserting a thermal material into the reservoir that displaces a reservoir fluid having a lower thermal conductivity than the thermal material, or in which the reservoir is fractured, and a thermal material is inserted into created fractures.

Abstract: A method for recompleting a well is applied to a well such that the recompleted well can thermally transfer geothermal energy to surface. The recompleting method can comprise steps to enhance the thermal conductivity of a wellbore of a hydrocarbon well, by inserting a thermal material into the wellbore that displaces a reservoir fluid having a lower thermal conductivity than the thermal material. The recompleting method can also comprise steps to enhance the thermal conductivity of a reservoir in which the wellbore is located by inserting a thermal material into the reservoir that displaces a reservoir fluid having a lower thermal conductivity than the thermal material, or in which the reservoir is fractured, and a thermal material is inserted into created fractures.

Abstract: A method for recompleting a well is applied to a well such that the recompleted well can thermally transfer geothermal energy to surface. The recompleting method can comprise steps to hydraulically isolate a wellbore using a hydraulic isolation means, and enhance the thermal conductivity of a reservoir in which the wellbore is located by inserting a thermal material into the reservoir that displaces a reservoir fluid having a lower thermal conductivity than the thermal material.

Abstract: A method for cooling a hydrocarbon production stream such as natural gas uses cryogenic nitrogen as a cooling medium (“refrigerant”) wherein only a portion of a nitrogen refrigerant stream is recovered, with a vapor portion of the nitrogen refrigeration stream being vented from the system. Unlike a conventional sacrificial nitrogen refrigeration process which vents all the nitrogen refrigerant after cooling a production stream, the method comprise means for recovering some of the nitrogen refrigerant thereby improving the operating efficiency of the process compared to conventional sacrificial nitrogen refrigeration processes. Also unlike conventional closed loop nitrogen refrigeration processes which recover all of the nitrogen refrigerant after cooling a production stream, the method can recover nitrogen refrigerant without the complex and costly equipment used in closed loop systems to compress nitrogen vapor.

Abstract: Methods of tailoring a hydrocarbon fracturing fluid for a subterranean formation are disclosed. Fluid in the subterranean formation has a fluid temperature. A first critical temperature of a hydrocarbon fluid is adjusted to a critical temperature above the fluid temperature by adding a liquefied petroleum gas component to the hydrocarbon fluid to produce the hydrocarbon fracturing fluid. The liquefied petroleum gas component has a second critical temperature, and the hydrocarbon fluid comprises liquefied petroleum gas. A hydrocarbon fracturing fluid made by these methods are also disclosed. Methods of treating a subterranean formation are also disclosed. A hydrocarbon fracturing fluid is introduced into the subterranean formation, the hydrocarbon fracturing fluid having a critical temperature that is above a fluid temperature of the hydrocarbon fracturing fluid when the hydrocarbon fracturing fluid is in the subterranean formation.

Abstract: Methods of tailoring a hydrocarbon fracturing fluid for a subterranean formation are disclosed. Fluid in the subterranean formation has a fluid temperature. A first critical temperature of a hydrocarbon fluid is adjusted to a critical temperature above the fluid temperature by adding a liquefied petroleum gas component to the hydrocarbon fluid to produce the hydrocarbon fracturing fluid. The liquefied petroleum gas component has a second critical temperature, and the hydrocarbon fluid comprises liquefied petroleum gas. A hydrocarbon fracturing fluid made by these methods are also disclosed. Methods of treating a subterranean formation are also disclosed. A hydrocarbon fracturing fluid is introduced into the subterranean formation, the hydrocarbon fracturing fluid having a critical temperature that is above a fluid temperature of the hydrocarbon fracturing fluid when the hydrocarbon fracturing fluid is in the subterranean formation.