tubular and is coupled to the sleeve the mandrel is operable to shift the sleeve between the open position and the closed position responsive to changes in pressure within the central flow path application_number US 201213878599 A description while the making and using of various embodiments of the present invention are discussed in detail below it should be appreciated that the present invention provides many applicable inventive concepts which can be embodied in a wide variety of specific contexts the specific embodiments discussed herein are merely illustrative of specific ways to make and use the invention and do not delimit the scope of the present invention the present invention provides improved methods and tools for completing and separately producing individual hydrocarbon zones in a single well the methods can be performed in either vertical or horizontal wellbores the term u201c vertical wellbore u201d is used herein to mean the portion of a wellbore in a producing zone which is substantially vertical inclined or deviated the term u201c horizontal wellbore u201d is used herein to mean the portion of a wellbore in a producing zone which is substantially horizontal since the present invention is applicable in vertical horizontal and inclined wellbores the terms u201c upper and lower u201d and u201c top and bottom u201d as used herein are relative terms and are intended to apply to the respective positions within a particular wellbore while the term u201c levels u201d is meant to refer to respective spaced positions along the.