FIELD: oil and gas industry, development and operation of gas field. SUBSTANCE: method of diagnostics includes measurement of pressure across heads in hole annulus and in string clearance. After measurement of pressure across heads in hole annulus and in string clearance gas is drained from hole annuls, then pressure is fixed across heads in hole annulus and in string clearance and graphs of dependence of pressure on time are constructed. After it conclusion is made on availability or lack of gas dynamic communication between hole annulus and string clearance. EFFECT: timely diagnostics of technical state of gas wells and reduced usage of materials. 3 dwg _
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