-
11.发明授权公开(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.
-
公开(公告)号：US20210140243A1
公开(公告)日：2021-05-13
申请号：US17079655
申请日：2020-10-26
Applicant: Southwest Petroleum University , Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang)
Inventor： Yang TANG , Shunxiao HUANG , Guorong WANG , Qingyou LIU , Shouwei ZHOU , Xushen Li , Lin ZHONG , Qingping Li , Yufa HE , Zhong Li , Yanjun Li , Hexing LIU , Jianglin ZHU , Jiaxin YAO , Jiang LU , Leizhen WANG
Abstract: The present invention provides an automatic jet breaking tool for solid fluidization exploitation of natural gas hydrate, which mainly includes an upper joint, an outer cylinder, an inner sliding sleeve, a lockup sliding sleeve, a thrust bearing, a spring, a jet joint, a telescopic jet sprinkler, a plug block and an extrusion seal ring. The present invention mainly adopts the principle of throttling control pressure to control the position of the inner sliding sleeve by controlling a flow rate of a drilling fluid, so as to turn on and turn off the jet breaking tool. The application of the present invention can realize automatic jet breaking of solid fluidization exploitation of the natural gas hydrate, reduce procedures of a round trip operation, and effectively improve the efficiency and safety of the exploitation operation of the natural gas hydrate.
-
13.发明授权公开(公告)号：US10100264B2
公开(公告)日：2018-10-16
申请号：US15454801
申请日：2017-03-09
Applicant: SOUTHWEST PETROLEUM UNIVERSITY
Inventor： Jinzhou Zhao , Yanjun Liu , Leilei Jiang , Shouwei Zhou , Mi Zhang , Ping Guo , Guorong Wang , Qingping Li , Zhiqiang Huang
Abstract: The present disclosure provides an experimental loop system for fluidization exploitation of solid-state marine gas hydrate, comprising: four modules, namely a gas hydrate sample large-amount and rapid preparation module, a gas hydrate multi-scale smashing and slurry fidelity transfer module, a gas hydrate slurry pipeline conveying characteristic experiment module, and a data collection and monitoring and safety control module. The gas hydrate experimental loop device provided by the present disclosure may be used for researching the synthesis, decomposition, gas storage rate and phase equilibrium of gas hydrate, and researching the pipeline conveying flow resistance and heat transfer characteristics, and is significant for solving the blockage problem in the gas pipeline conveying process, storage and conveying of the gas hydrate, solid-state fluidization exploitation of the marine gas hydrate and pipeline conveying experimental simulation thereof.
-
-
Search Results
13
records
(took 0.017 seconds)
