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PetroChina Great Wall Drilling's DQ200Z-YM top drive is being used in the construction of oil and gas wells in Ordos.

PetroChina Great Wall Drilling's DQ200Z-YM top drive is being used in the construction of oil and gas wells in Ordos.

PetroChina Group Great Wall Drilling DQ250Z-YM Top Drive Ordos Oil and Gas Well Construction

PetroChina Group Great Wall Drilling DQ250Z-YM Top Drive Ordos Oil and Gas Well Construction

Sinopec Group's Huagong Liupu drilling rig is used for coalbed methane development in Shanxi Province.

Sinopec Group's Huagong Liupu drilling rig is used for coalbed methane development in Shanxi Province.

China National Petroleum Corporation's Great Wall Drilling is using a 350-ton top drive for the construction of oil and gas wells in the Ordos region.

China National Petroleum Corporation's Great Wall Drilling is using a 350-ton top drive for the construction of oil and gas wells in the Ordos region.

Shanxi Coalbed Methane Company ZJ50DB drilling rig (two sets) is used for oil and gas well construction in Wuqi County, Shaanxi Province.

Shanxi Coalbed Methane Company ZJ50DB drilling rig (two sets) is used for oil and gas well construction in Wuqi County, Shaanxi Province.