A NEW KIND OF PLUGGING AGENT SUITABLE FOR COALBED METHANE WELL

Using the leftover of marine algae colloid and adding the fibrous material and high molecular polymer, a new kind of plugging agent is developed,It has the stronger plugging capacity,can suffer the greater pressure difference and can be degraded by the chemical method,then it has not the permanent harm to the strata, especially to the coal seam and it is suitable for the coalbed methane well and other wells in which the reservoir should be preserved.