Pre-coated film propping agent, preparation method of pre-coated film propping agent and sand prevention method adopting pre-coated film propping agent
Pre-coated film propping agent, preparation method of pre-coated film propping agent and sand prevention method adopting pre-coated film propping agent
- CN 102,660,245 B
- Filed: 03/31/2012
- Issued: 05/14/2014
- Est. Priority Date: 03/31/2012
- Status: Active Grant