Abstract: Based on the characteristics of the No.3 coal seam and No.15 coal seam in Zhengzhuang Field and the need for low-cost and high-efficiency development of coalbed methane, a technical method for enhancing coalbed methane mining in non-cemented L-type staged fracturing horizontal wells in coal seams is proposed. The numerical simulation results show that hydraulic jet fracturing can produce 1.5-2.0 MPa annular sealing effect and 3.5-4.5 MPa hole pressurization effect, which can meet the purpose of annular air anti-channeling and fixed-point fracturing in the non-cemented horizontal wells. In view of the construction technology problems in drilling and completion, fracturing and drainage of non-cemented coalbed methane horizontal wells, four core key technologies have been explored, including “high-quality, fast and safe” drilling and completion technology, coiled tubing with bottom seal fast dragging jet-fracturing combined staged fracturing technology, “large displacement, large-scale, medium-sand ratio” active water fracturing stimulation technology, L-shaped horizontal well fine drainage control technology. Practice has proved that the non-cementing staged fracturing horizontal well development technology for coalbed methane has achieved large-scale application in Zhengzhuang Field, and achieved a double breakthrough in coalbed methane development technology and high gas production.