a synthesis method for degradable material which can be used in oil and gas field operations . the method involves using two , three , four or five polymer and chain extenders , including poly glycolic acid , polycaprolactone , polylactic acid , poly and poly , to synthesize a “ resin alloy ” through the melt mixing reaction method , which can be used in oil and gas field operations . the proposed dm can be prepared into flake , powder , granules , and ball shapes , or by one of the pure pga , pcl , pla , pbs and pha , into flake , powder , granule and ball shapes , which can be further used in all kinds of operations in oil and gas fields , such as temporary plugging to protect a reservoir , temporary plugging of perforation holes , construction intervals , etc . the dms are fully degradable and cause almost no damage to formations .