A method for re-fracturing a location of a formation of a multizone horizontal wellbore, the method comprising: positioning a coiled tubing string (7, 75) within a casing of the multizone horizontal wellbore; hydraulically isolating a first location from a portion of the multizone horizontal wellbore uphole from the first location, the first location having been previously hydraulically fractured at least once, wherein hydraulically isolating the first location comprises creating a seal with a packing element connected to the coiled tubing string (7, 75) to seal an annulus between the coiled tubing string (7, 75) and the casing of the multizone horizontal wellbore uphole of the first location; hydraulically re-fracturing the first location by pumping fluid down the coiled tubing string (7, 75) while the packing element seals the annulus; providing a first diverting material proximate to the first location after the first location has been hydraulically re-fractured while the coiled tubing string (7, 75) remains positioned within the casing, wherein providing the first diverting material comprises pumping the first diverting material down the coiled tubing string (7, 75) and positioning the first diverting material proximate to the first location, and wherein the first diverting material hydraulically isolates the re-fractured first location from the multizone horizontal wellbore uphole of the first location; hydraulically isolating a second location from a portion of the multizone horizontal wellbore uphole of the second location, the second location having been previously hydraulically fractured at least once, wherein hydraulically isolating the second location comprises creating a seal with the packing element connected to the coiled tubing string (7, 75) to seal the annulus between the coiled tubing string (7, 75) and the casing of the multizone horizontal wellbore uphole of the second location; hydraulically re-fracturing the second location by pumping fluid down the coiled tubing string (7, 75) while the packing element seals the annulus; and providing a second diverting material proximate to the second location after the second location has been re-fractured while the coiled tubing string (7, 75) remains positioned within the casing, wherein providing the second diverting material comprises pumping the second diverting material down the coiled tubing string (7, 75) and positioning the second diverting material proximate to the second location, and wherein the second diverting material hydraulically isolates the re-fractured second location from a portion of the multizone horizontal wellbore uphole of the second location. positioning a coiled tubing string (7, 75) within a casing of the multizone horizontal wellbore; hydraulically isolating a first location from a portion of the multizone horizontal wellbore uphole from the first location, the first location having been previously hydraulically fractured at least once, wherein hydraulically isolating the first location comprises creating a seal with a packing element connected to the coiled tubing string (7, 75) to seal an annulus between the coiled tubing string (7, 75) and the casing of the multizone horizontal wellbore uphole of the first location; hydraulically re-fracturing the first location by pumping fluid down the coiled tubing string (7, 75) while the packing element seals the annulus; providing a first diverting material proximate to the first location after the first location has been hydraulically re-fractured while the coiled tubing string (7, 75) remains positioned within the casing, wherein providing the first diverting material comprises pumping the first diverting material down the coiled tubing string (7, 75) and positioning the first diverting material proximate to the first location, and wherein the first diverting material hydraulically isolates the re-fractured first location from the multizone horizontal wellbore uphole of the first location; hydraulically isolating a second location from a portion of the multizone horizontal wellbore uphole of the second location, the second location having been previously hydraulically fractured at least once, wherein hydraulically isolating the second location comprises creating a seal with the packing element connected to the coiled tubing string (7, 75) to seal the annulus between the coiled tubing string (7, 75) and the casing of the multizone horizontal wellbore uphole of the second location; hydraulically re-fracturing the second location by pumping fluid down the coiled tubing string (7, 75) while the packing element seals the annulus; and providing a second diverting material proximate to the second location after the second location has been re-fractured while the coiled tubing string (7, 75) remains positioned within the casing, wherein providing the second diverting material comprises pumping the second diverting material down the coiled tubing string (7, 75) and positioning the second diverting material proximate to the second location, and wherein the second diverting material hydraulically isolates the re-fractured second location from a portion of the multizone horizontal wellbore uphole of the second location.