The invention discloses a temporary plugging
workover fluid for a low-pressure
carbonate reservoir gas well and preparation and an application method of the temporary plugging
workover fluid. The temporary plugging
workover fluid is composed of two slugs, wherein one is a low-
solid phase water-locking type temporary plugging fluid
slug, and mainly plays roles of forming a temporary plugging layerat a blasthole, bearing pressure of an upper fluid column and balancing formation
pressure difference; the other
slug is a water-based anti-swelling inhibitor
slug, and mainly plays a role of furtherreducing damage caused by a small amount of workover fluid entering the reservoir due to micro-leakage. The temporary plugging workover fluid provided by the invention has the characteristics of lessleakage, small reservoir damage, strong pressure
bearing capacity and water-locking capacity, good universality, non-
toxicity, harmlessness, convenient construction, easy flowback, high safety,
environmental protection and the like, is mainly used for temporarily plugging and killing the well in the
carbonate reservoir during workover, is particularly suitable for workover of the low-pressure
carbonate reservoir gas well having tubular columns with packers, and can reduce the damage of the workover fluid to the formation.