Laboratory Study and Field Application of A New Coal Grime Scavenger Agent FHZ-2
In Xinzhou gas production area of CNPC coalbed methane,the coal grime scavenger agent FHZ-1 cannot handle the coalbed gas production well with serious blockage but not completely blocked.To solve this problem,a new coal grime scavenger agent FHZ-2 has been developped.The FHZ-2 has a good softening and cleaning effect on the coal grime of the surface of sieve tube and sieve mesh specimen with serious blockage.It also can soften and decompose the coal grime blocked in the pipe,and the dissolution rate of coal grime is as high as 29%.Scavenger agent FHZ-2 and scavenger agent FHZ-1 have good compatibility and no viscosity increase,and have good dredging effect on 10 severely blocked wells in Xinzhou gas production area,the average daily water production per well increased by 8.5 times,creating huge economic benefits.
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