E21F 7 - Methods or devices for drawing-off gases with or without subsequent use of the gas for any purpose

Patents for E21F 7 - Methods or devices for drawing-off gases with or without subsequent use of the gas for any purpose (2,187)
12/2011
12/28/2011	CN102296981A 矿井瓦斯抽采与消突数据处理系统 Mine gas drainage and eliminate sudden data processing system
12/28/2011	CN102296979A 利用自然冷源对瓦斯进行深度冷凝的除尘、脱水工艺 Using natural cooling source for deep gas condensate dust, dehydration process
12/28/2011	CN101858227B 下向抽放钻孔集中快速排水装置 Under the centralized rapid drainage drainage hole
12/28/2011	CN101539028B 高压脉动注水防治煤岩动力灾害的装置 High pressure water injection device pulsation prevention coal or rock dynamic disasters
12/21/2011	CN202081909U 煤层气井排采时影响半径动态监测模拟装置 CBM wells radius of influence of dynamic monitoring of analog device when drainage
12/21/2011	CN202081908U 涌水瓦斯抽放钻孔封孔装置 Gushing gas drainage drilling sealing device
12/21/2011	CN202081857U 一种瓦斯抽放钻孔的封孔设备 Sealing a gas drainage drilling equipment
12/21/2011	CN202081835U 瓦斯抽放钻杆 Gas drainage drill
12/21/2011	CN102287221A 一种用于CO<sub>2</sub>气体开采器的封孔装置 Sealing device for CO <sub> 2 </ sub> gas extraction device
12/21/2011	CN102287220A 一种用于CO<sub>2</sub>气体开采器的推拉固定装置 Sliding fixtures for CO <sub> 2 </ sub> gas extraction device
12/21/2011	CN102287219A 一种用于CO<sub>2</sub>气体开采器的连接器 A CO <sub> 2 </ sub> gas extraction device connector
12/21/2011	CN102287218A 一种瓦斯抽放封孔装置 One kind of gas drainage sealing device
12/21/2011	CN102287217A 水力割缝多孔排渣法 Hydraulic Cutting porous slag France
12/21/2011	CN102287216A 充氮控氧防治煤矿瓦斯事故方法 Nitrogen oxygen controlled coal mine gas accident prevention method
12/21/2011	CN101699033B 煤层下向孔抽采排水装置 Under the coal seam gas drainage holes to drain
12/21/2011	CN101629492B 一种矿井瓦斯的抽取装置 In mine gas extraction equipment
12/21/2011	CN101131091B 井下煤层压风螺旋钻进机具及使用该机具钻孔的方法 Underground coal seam pressure air screw drilling equipment and the use of the method of drilling equipment
12/14/2011	CN202076556U 煤层气排采用钢缆连接装置 CBM row using cable connection means
12/14/2011	CN202073589U 反应型泡沫封孔多挡板密封装置 Reactive multi-baffle seal sealing foam
12/14/2011	CN202073588U 矿井瓦斯抽采管网自动放水系统 Mine gas drainage pipe network automatic drain system
12/14/2011	CN202073499U Pdc钻、扩单翼组合钻头 Pdc drilling, expanding wing combination drill
12/14/2011	CN202073497U 三维旋转水射流煤层扩孔系统 Three-dimensional rotating water jet coal reaming system
12/14/2011	CN102278135A 旋流式煤矿抽采瓦斯稀释混合器 Swirl mine drainage gas dilution mixer
12/14/2011	CN102278134A 一种煤矿乏风瓦斯的收集方法和装置 Lack of a coal mine gas collection methods and apparatus of the wind
12/14/2011	CN102278133A Individual overflow water seal fire relief and explosion release device
12/14/2011	CN102278089A 一种提高地面瓦斯抽排井套管稳定性的方法 A ground gas drainage methods to improve the stability of the well casing
12/07/2011	CN202064996U 基于plc变频调速的瓦斯抽排放装置 Smoke emission devices based on Frequency Gas plc
12/07/2011	CN202064995U 隧道瓦斯快速排放装置 Rapid gas discharge device tunnel
12/07/2011	CN202064990U Pressure relief explosion proofing device for gas drainage pipeline
12/07/2011	CN202064830U 采煤工作面用架柱式钻机系统 Coalface rig system with rack column
12/07/2011	CN202061548U 低浓度瓦斯转轮催化氧化装置 Low-density gas runner catalytic oxidation unit
12/07/2011	CN102268973A 封孔装置 Sealing device
12/07/2011	CN101666241B 一种区域瓦斯治理钻爆压抽一体化防突方法 Gas Control of a regional integrated drilling and blasting pressure pumping outburst prevention methods
12/07/2011	CN101435338B 煤矿低浓度瓦斯甲烷销毁方法及装置 Low-density gas of coal mine methane destruction method and apparatus
11/2011
11/30/2011	CN102261261A 构造煤发育区钻进、增透一体化装置 Tectonic coal development zone drilling, AR Integrated Device
11/30/2011	CN102261241A 矿井瓦斯抽采系统中单孔计量的装置和方法 Mine gas drainage system apparatus and method for the measurement of hole
11/30/2011	CN101569822B 一种降低瓦斯浓度的瓦斯吸收剂 A method of reducing the concentration of methane gas absorbers
11/23/2011	CN202047859U Integral hole packer for drainage and pressure measurement of gas
11/23/2011	CN202047858U Air bulking type gas pumping hole packer
11/23/2011	CN102251800A Magazine clip type hole packer
11/23/2011	CN102251799A Method for selecting high-level gas drainage horizon in coal mine
11/23/2011	CN102251798A Hole distribution method for long-acting extraction of ground coal bed gas
11/23/2011	CN102251797A Device and method for gas drilling, cementing and hole sealing for coal mines
11/23/2011	CN102251796A Water circulation system of gas pump station under mine
11/16/2011	CN202039898U Device for automatically draining water in borehole in gas drainage
11/16/2011	CN202039888U Continuous slag removal device for gas pipeline
11/16/2011	CN202039774U Automatic-moving hydraulic drilling machine used for coal mine
11/16/2011	CN102242640A Rapid outburst elimination method for cross cut coal uncovering in coal mine underground
11/16/2011	CN102242639A Compressed air grouting device
11/16/2011	CN102242617A Pressure sensing valve
11/16/2011	CN101813002B Coal seam pre-splitting method based on gas extraction
11/16/2011	CN101446178B Wind pressure air drilling equipment in downhole soft outbursting coal bed and process matched therewith
11/09/2011	CN202032137U Adjustable prevention and control gas safety valve
11/09/2011	CN202031648U Automatic water drainage device for gas drainage of coal mine
11/09/2011	CN202031564U Coal petrographic drilling hydraulic fracture experimental apparatus
11/02/2011	CN202023530U Rapid hole packer in coal-mine gas extraction and gradual expansion
11/02/2011	CN102230395A Multifunctional hole packer capable of plugging and injecting
11/02/2011	CN102230394A Secondary hole sealing system for improving coal bed gas extraction concentration
11/02/2011	CN102230393A Gas intake, exhaust and flow guide device of coal mine ventilation air methane preheating catalytic oxidizer
11/02/2011	CN102230363A Device and method for drilling and forming hole in coal rock in structural belt
11/02/2011	CN102228792A Rotating wheel catalytic oxidation apparatus for low-concentration gas
11/02/2011	CN101846217B Anti-static inflaming-retarding PVC firedamp drainage tube stock for mine and preparation method
11/02/2011	CN101581231B Gas drainage method for loosening coal body through cross layer boring and hydraulic fracture
11/02/2011	CN101315021B Automatic reducing borehole-enlarging drilling tool
10/2011
10/26/2011	CN202017472U Gas drainage hole packer with pressure gauge
10/26/2011	CN202017459U Drill rod with double powder discharging channels
10/26/2011	CN102226413A Gas extraction method of cross hole drilling area of gas discharge laneway
10/26/2011	CN102226412A Underground dark mining drilling well gas extraction method
10/26/2011	CN102226389A Coal mine drilling anti-collapse hole pipe network and anti-collapse hole method
10/26/2011	CN101749044B Intelligent movable gas pumping station for mine
10/26/2011	CN101749017B Outburst prevention technique for multiple heading in coal mine
10/19/2011	CN202012295U Stabilizing device for gas drainage drilling rig
10/12/2011	CN202007682U Pneumatic water injection device for mining coal seams
10/12/2011	CN102213106A Continuous countercurrent catalytic oxidation device of ventilation air gas of coal mine
10/12/2011	CN102213077A Coal seam reaming system using three-dimensional (3D) swirling water jet and reaming and fracturing method for permeability enhancement
10/12/2011	CN101586469B Hole sealing method for deep hole advanced loose blasting
10/05/2011	CN202001050U Gas dust catcher for coal mine
10/05/2011	CN102207004A Method for carrying out gas control on coal faces
09/2011
09/28/2011	CN201991548U Drainage, slag discharge and gas extraction integrated device
09/28/2011	CN201991547U 新式瓦斯集中抽采箱 The new centralized drainage tank of gas
09/28/2011	CN201991546U 矿井瓦斯抽排封孔器管接件 Mine gas drainage pipe fittings sealing device
09/28/2011	CN102200024A Gas extraction center divided-flow type grouting and hole sealing device and hole sealing method
09/28/2011	CN102200002A method and device for sealing upward hole at high pressure by sections
09/28/2011	CN102199991A Drilling-fixing integrated device and method for yolk coal terrane
09/28/2011	CN101915085B Low-air-permeability coal-bed gas extraction method
09/28/2011	CN101906993B Method and device for early warning explosion of gas and other combustible gases
09/28/2011	CN101725777B Coal mine underground rubber hose for drawing out methane and preparation method thereof
09/22/2011	WO2011113408A2 Method for minimizing nitrogen oxide gases in underground mining and tunnel construction
09/22/2011	DE102010012061A1 Method for ventilating radioactive contaminated subsurface operations, involves absorbing radioactive materials in air corresponding to requirements of radiation protection before air passes absorbing ventilator in air purification system
09/21/2011	CN201982132U 瓦斯抽采孔用护孔管 Gas drainage hole with retaining hole pipe
09/21/2011	CN201982077U Gas-water separator for coal mine gallery drilling rig
09/14/2011	CN201972739U 煤层气热能转化系统 CBM thermal energy conversion system
09/14/2011	CN201972656U 煤矿瓦斯抽采孔快速封隔器 Coal mine gas drainage hole fast packer
09/14/2011	CN102182926A Negative pressure adjustment system of coalbed methane collecting and conveying system in coal mining area and adjustment method of negative pressure adjustment system
09/14/2011	CN102182499A Hydrofracturing-based method and equipment for diminishing dust and eliminating outburst of coal bed
09/14/2011	CN102182498A Comprehensive laneway-supporting method for cracked area in coal mine
09/14/2011	CN102182495A Gas dust catcher
09/14/2011	CN102182426A Method for pumping coal bed gas from long-distance pressure-relieved coal bed
09/14/2011	CN102182402A Gas discharge drilling machine capable of positioning quickly
09/14/2011	CN102182397A Multi-angle coal petrography drilling machine

1 ... 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22