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Patent applications and USPTO patent grants for Wen; Zhaijun.The latest application filed is for "well cementation working solution prepared from red mud, slag and waste drilling fluids".
Patent | Date |
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Well cementation working solution prepared from red mud, slag and waste drilling fluids Grant 10,975,284 - Cheng , et al. April 13, 2 | 2021-04-13 |
Method for evaluating breakage strength of first and second cemented surfaces of well cementation under dynamic load Grant 10,876,945 - Cheng , et al. December 29, 2 | 2020-12-29 |
Well Cementation Working Solution Prepared From Red Mud, Slag And Waste Drilling Fluids App 20200071594 - CHENG; Xiaowei ;   et al. | 2020-03-05 |
Method For Evaluating Breakage Strength Of First And Second Cemented Surfaces Of Well Cementation Under Dynamic Load App 20200011777 - CHENG; Xiaowei ;   et al. | 2020-01-09 |
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