公开(公告)号：US20160123128A1

公开(公告)日：2016-05-05

申请号：US14898489

申请日：2014-03-27

Applicant: ENN COAL GASIFICATION MINING CO., LTD.

Inventor： Gang LIU ,  Feng CHEN

IPC: E21B43/295 ,  E21B7/04 ,  E21B7/06

CPC classification number: E21B43/295 ,  E21B7/046 ,  E21B7/06 ,  E21B43/243 ,  E21B43/305

Abstract: A gas injection apparatus with a controllable gas injection point, a gas injection process, and a gasification method. The gas injection apparatus comprises a directional well channel, where a continuous oil pipe is provided in the directional well channel. The continuous oil pipe is connected to an oxygen/oxygen-rich gas pipeline. An annular gap between the continuous oil pipe and the directional well channel is connected to an auxiliary gasification agent pipeline and a vapor pipeline. A gas injection wellhead is provided at the start end of the continuous oil pipe, and a nozzle is provided at the tail end. In the present invention, based on directional drilling and continuous oil pipe technologies, the movement of a gas injection point is implemented by using a manner of combining directional drilling and a continuous oil pipe; meanwhile, by using a principle of controlling reverse combustion by adjusting a gasification agent injection parameter, the movement of a working surface position and a combustion speed of a flame are regulated, so as to achieve the objective of ignition and gasification for reverse combustion of an underground coal layer.

Abstract translation: 一种具有可控气体注入点，气体注入过程和气化方法的气体注入装置。 气体注入装置包括定向井通道，其中连续油管设置在定向井通道中。 连续油管连接到氧/富氧气体管道。 连续油管和定向井通道之间的环形间隙连接到辅助气化剂管道和蒸汽管道。 在连续油管的起始处设有气体注入井口，在尾端设有喷嘴。 在本发明中，基于定向钻井和连续油管技术，通过使用定向钻井和连续油管组合的方式来实现气体注入点的运动; 同时通过调整气化剂注入参数控制反向燃烧的原理，调节工作面位置的运动和火焰的燃烧速度，从而达到点火和气化的目的。 地下煤层。

公开(公告)号：US20160251950A1

公开(公告)日：2016-09-01

申请号：US15032661

申请日：2014-03-27

Applicant: ENN COAL GASIFICATION MINING CO., LTD.

Inventor： Feng CHEN ,  Hongtao LIU

IPC: E21B43/295 ,  E21B7/04

CPC classification number: E21B43/295 ,  E21B7/04 ,  E21B43/243 ,  E21B43/26 ,  E21C43/00

Abstract: An underground gasification ignition method comprises the following steps: making a directional drilling and a vertical well to construct an underground gasification furnace; using a cold fracturing method to pre-penetrate a coal seam; and igniting in the vertical well at an end of the directional drilling.

Abstract translation: 地下气化点火方法包括以下步骤：定向钻井和垂直井，构建地下气化炉; 采用冷压裂法预先穿透煤层; 并在定向钻井结束时在垂直井中点燃。

公开(公告)号：US20170101593A1

公开(公告)日：2017-04-13

申请号：US15126595

申请日：2015-04-10

Applicant: ENN COAL GASIFICATION MINING CO., LTD.

Inventor： Feng CHEN ,  Xia PAN

IPC: C10J3/72 ,  C01B3/02 ,  C10J3/46

CPC classification number: C10J3/721 ,  C01B3/02 ,  C10J3/46 ,  C10J3/466 ,  C10J3/723 ,  C10J2300/093 ,  C10J2300/0959 ,  C10J2300/0973 ,  C10J2300/1223

Abstract: A coal co-gasification method, comprising the following steps: 1, fuel and a first pressurised oxygen-containing gas are injected into a gasifier, and the fuel is ignited so as to increase the temperature inside the gasifier; 2, when the temperature increase reaches a temperature capable of igniting coal-water slurry to be injected, injection of the fuel and the first pressurised oxygen-containing gas is stopped, and the coal-water slurry and a second pressurised oxygen-containing gas are injected into the gasifier so as to perform coal-water slurry gasification; 3, once the coal-water slurry gasification has stabilised, a third pressurised oxygen-containing gas and carbon dioxide carrying powdered coal are injected into the gasifier to perform co-gasification. The method operates stably, and overcomes cumbersome and time-consuming adjustment steps in the prior art.

公开(公告)号：US20170081601A1

公开(公告)日：2017-03-23

申请号：US15126589

申请日：2015-04-10

Applicant: ENN COAL GASIFICATION MINING CO., LTD.

Inventor： Feng CHEN ,  Xia PAN

IPC: C10J3/72 ,  C01B3/02 ,  C10J3/46

CPC classification number: C10J3/721 ,  C01B3/02 ,  C10J3/466 ,  C10J3/726 ,  C10J2300/093 ,  C10J2300/0959 ,  C10J2300/0969 ,  C10J2300/0973 ,  C10J2300/1223

Abstract: A coal co-gasification method, comprising the following steps: 1, fuel and a first pressurised oxygen-containing gas are injected into a gasifier, and the fuel is ignited so as to increase the temperature inside the gasifier; 2, when the temperature increase reaches a temperature capable of igniting powdered coal to be injected, injection of the fuel is stopped, injection of the first pressurised oxygen-containing gas is continued, and a pressurised carbon dioxide gas carrying the powdered coal to be injected is injected into the gasifier so as to perform powdered coal gasification; 3, once the powdered coal gasification has stabilised, coal-water slurry and an oxygen-containing gas are injected into the gasifier to perform co-gasification. The method operates stably, and overcomes cumbersome and time-consuming adjustment steps in the prior art.