-
公开(公告)号：US11156064B2
公开(公告)日：2021-10-26
申请号：US16604106
申请日：2018-11-20
Applicant: SouthWest Petroleum University
Inventor： Jinzhou Zhao , Na Wei , Haitao Li , Liehui Zhang , Shouwei Zhou , Qingping Li , Wantong Sun
Abstract: A natural gas hydrate solid-state fluidization mining method and system under an underbalanced positive circulation condition, used for performing solid-state fluidization mining on a non-rock-forming weak-cementation natural gas hydrate layer in the ocean. Equipment includes a ground equipment system and an underwater equipment system. The construction procedure has an earlier-stage construction process, underbalanced hydrate solid-state fluidization mining construction process and silt backfilling process. Natural gas hydrates in the seafloor are mined through an underbalanced positive circulation method.
-
公开(公告)号：US10794180B2
公开(公告)日：2020-10-06
申请号：US16305895
申请日：2017-09-27
Applicant: SOUTHWEST PETROLEUM UNIVERSITY
Inventor： Gao Li , Yi Feng , Shunhui Yang , Yijian Chen , Na Wei , Yingfeng Meng , Rui Li
Abstract: A mineshaft-stratum fracture coupled flowing simulation experiment device includes a simulated mineshaft flowing system, a simulated stratum system, a simulated fracture system and a data acquisition system. The simulated mineshaft flowing system includes simulated mineshaft, simulated drilling rod, drilling fluid storage tank, stirring motor, and drilling fluid screw pump. The simulated drilling rod is located in center of the simulated mineshaft. The stirring motor is provided in the drilling fluid storage tank. The drilling fluid screw pump is connected to an inlet end of the simulated drilling rod through the drilling fluid storage tank. The simulated stratum system includes simulated stratum, clean water storage tank, separation tank, gas storage tank, gas air-compressor, and clean water screw pump. The gas storage tank is connected to the gas air-compressor and is connected to the simulated stratum through a gas pressure regulating valve.
-
公开(公告)号：US11465152B2
公开(公告)日：2022-10-11
申请号：US16604100
申请日：2018-11-20
Applicant: SouthWest Petroleum University
Inventor： Jinzhou Zhao , Na Wei , Chunquan Liu , Kaisong Wu , Liehui Zhang , Shouwei Zhou , Haitao Li , Wantong Sun
Abstract: A crushing system for large-size natural gas hydrate rock samples, which mainly includes a crushing and stirring control subsystem, crushing and stirring execution subsystem and hydrate preparation subsystem. Full automatic control to parameter acquisition and experimental process is achieved by utilizing modern automation technology, including the function of automatically crushing the large-size natural gas hydrate rock samples and also monitoring, collecting and storing the drilling pressure, the torque and the internal furnace pressure and temperature parameters during the crushing process in real time, to provide reliable guarantee for the follow-up researches on crushing mechanism, crushing efficiency, drilling parameter optimization, rock crushing ability evaluation of a crushing tool and the like of the large-size natural gas hydrate rock samples and necessary experimental verification means for optimization of on-site exploiting construction conditions of natural gas hydrate.
-
公开(公告)号：US11053779B2
公开(公告)日：2021-07-06
申请号：US16604109
申请日：2018-11-20
Applicant: SouthWest Petroleum University
Inventor： Jinzhou Zhao , Na Wei , Haitao Li , Liehui Zhang , Shouwei Zhou , Qingping Li , Wantong Sun
IPC: E21B7/128 , E21B7/18 , E21B21/08 , E21B21/12 , E21B41/00 , E21B43/01 , E21B43/16 , E21B43/26 , E21B43/29 , E21B43/38 , E21B33/14
Abstract: A hydrate solid-state fluidization mining method and system under an underbalanced reverse circulation condition are used for solid-state fluidization mining on a non-rock-forming weak-cementation natural gas hydrate layer in the ocean. Equipment includes a ground equipment system and an underwater equipment system. The construction procedure includes an earlier-stage construction process, pilot hole drilling construction process, reverse circulation jet fragmentation process, underbalanced reverse circulation fragment recovery process and silt backfilling process. Natural gas hydrates in the seafloor are mined through an underbalanced reverse circulation method. Problems such as shaft safety, production control and environmental risks faced by conventional natural gas hydrate mining methods such as depressurization, heat injection, agent injection and replacement are effectively solved. By using the method, the weak-cementation non-rock-forming natural gas hydrates in the seafloor can be mined in environment-friendly, efficient, safe and economical modes, more energy resources can be provided, and energy shortage dilemmas are solved.
-
-
-
Search Results
4
records
(took 0.012 seconds)
