Methods for tight oil production through secondary recovery using spaced producer and injector wellbores

A method of producing hydrocarbons from a formation, the method comprising:

• drilling two or more horizontal wellbores in the formation, wherein:
• at least a portion of each of the horizontal wellbores extends in a direction that is within 20 degrees of parallel to a direction of maximum horizontal stress of the formation;
• the horizontal wellbores include one or more producer wellbores and one or more injector wellbores, each of the producer wellbore(s) separated from at least one of the injector wellbore(s) by a well spacing;
• and, wherein:
• the average permeability of the formation is at least 0.005 mD and less than 0.01 mD, and the well spacing is between 100 and 800 feet;
• creating one or more longitudinal fractures that are in communication with the formation in each of the horizontal wellbores, the longitudinal fracture(s) created with a fracturing fluid;
• injecting a recovery fluid into at least one of the injector wellbore(s) such that the recovery fluid flows into the formation, wherein the recovery fluid comprises gas;
• and
• receiving hydrocarbons from the formation into at least one of the producer wellbore(s) at least when the recovery fluid is in the formation.

A method of producing hydrocarbons from a formation, the method comprising:

• drilling two or more horizontal wellbores in the formation, wherein:
• at least a portion of each of the horizontal wellbores extends in a direction that is within 20 degrees of parallel to a direction of maximum horizontal stress of the formation;
• the horizontal wellbores include one or more producer wellbores and one or more injector wellbores, each of the producer wellbore(s) separated from at least one of the injector wellbore(s) by a well spacing;
• and, wherein:
• the average permeability of the formation is at least 0.01 mD and less than 0.05 mD, and the well spacing is between 150 and 1,500 feet;
• creating one or more longitudinal fractures that are in communication with the formation in each of the horizontal wellbores, the longitudinal fracture(s) created with a fracturing fluid;
• injecting a recovery fluid into at least one of the injector wellbore(s) such that the recovery fluid flows into the formation, wherein the recovery fluid comprises gas;
• and
• receiving hydrocarbons from the formation into at least one of the producer wellbore(s) at least when the recovery fluid is in the formation.

A method of producing hydrocarbons from a formation, the method comprising:

• drilling two or more horizontal wellbores in the formation, wherein:
• at least a portion of each of the horizontal wellbores extends in a direction that is within 20 degrees of parallel to a direction of maximum horizontal stress of the formation;
• the horizontal wellbores include one or more producer wellbores and one or more injector wellbores, each of the producer wellbore(s) separated from at least one of the injector wellbore(s) by a well spacing;
• and, wherein:
• the average permeability of the formation is at least 0.05 mD and less than 0.10 mD, and the well spacing is between 200 and 2,000 feet;
• creating one or more longitudinal fractures that are in communication with the formation in each of the horizontal wellbores, the longitudinal fracture(s) created with a fracturing fluid;
• injecting a recovery fluid into at least one of the injector wellbore(s) such that the recovery fluid flows into the formation, wherein the recovery fluid comprises gas;
• and
• receiving hydrocarbons from the formation into at least one of the producer wellbore(s) at least when the recovery fluid is in the formation.

A method of producing hydrocarbons from a formation, the method comprising:

• drilling two or more horizontal wellbores in the formation, wherein:
• at least a portion of each of the horizontal wellbores extends in a direction that is within 20 degrees of parallel to a direction of maximum horizontal stress of the formation;
• the horizontal wellbores include one or more producer wellbores and one or more injector wellbores, each of the producer wellbore(s) separated from at least one of the injector wellbore(s) by a well spacing;
• and, wherein:
• the average permeability of the formation is at least 0.10 mD and less than 0.50 mD, and the well spacing is between 500 and 3,000 feet;
• creating one or more longitudinal fractures that are in communication with the formation in each of the horizontal wellbores, the longitudinal fracture(s) created with a fracturing fluid;
• injecting a recovery fluid into at least one of the injector wellbore(s) such that the recovery fluid flows into the formation, wherein the recovery fluid comprises gas;
• and
• receiving hydrocarbons from the formation into at least one of the producer wellbore(s) at least when the recovery fluid is in the formation.

A method of producing hydrocarbons from a formation, the method comprising:

• drilling two or more horizontal wellbores in the formation, wherein:
• at least a portion of each of the horizontal wellbores extends in a direction that is within 20 degrees of parallel to a direction of maximum horizontal stress of the formation;
• the horizontal wellbores include one or more producer wellbores and one or more injector wellbores, each of the producer wellbore(s) separated from at least one of the injector wellbore(s) by a well spacing;
• and, wherein:
• the average permeability of the formation is at least 0.50 mD and less than or equal to 2.0 mD, and the well spacing is between 800 and 4,000 feet;
• creating one or more longitudinal fractures that are in communication with the formation in each of the horizontal wellbores, the longitudinal fracture(s) created with a fracturing fluid;
• injecting a recovery fluid into at least one of the injector wellbore(s) such that the recovery fluid flows into the formation, wherein the recovery fluid comprises gas;
• and
• receiving hydrocarbons from the formation into at least one of the producer wellbore(s) at least when the recovery fluid is in the formation.