With the analysis among 6,214 patents, we discovered top 297 key players by total patent application. Schlumberger Technologies, Inc., Halliburton Energy Services, Inc., PetroChina Co., Ltd. are dominant in this area. They take 19.26% of the total patent filing.
With the analysis among related 1,512 patents applied in the last 5 years. We discover 157 most active companies in this area. The fast-growing PetroChina Co., Ltd., China National Petroleum Corp., China Petroleum & Chemical Corp. take 21.96% of patent filing during this period.
With the analysis among related 1,512 patents in last 5 years, we discover 76 new entrants. Xinjiang Zhundong Petroleum Technology Co. Ltd., Ziebel AS, Shaanxi Yanchang Petroleum (Group) Co., Ltd. are the most active new entrants in this area.
With the analysis among 890 patents, we discovered top 102 universities and scientific research institutions by total patent application. China University of Petroleum (East China), Southwest Petroleum University, China Petroleum University Beijing are dominant in this area. They take 32.70% of the total patent filing.