hydraulic gas drainage drilling machine

Discussion on the Development of Intelligent Drilling

Keywords: gas drainage; intelligent drilling; development Project Fund: 2018-TD-ZD016, special project of technology and engineering innovation fund of Tiandi ... and extend the

Hydraulic outburst prevention drilling machine for coal seam gas ...

2008.12.30 The utility model discloses a hydraulic outburst prevention drilling machine used for coal seam gas drainage. The hydraulic outburst prevention drilling

Research and application of high-pressure water jets drilling

2022.11.7 To recover the gas drainage effect of failure boreholes, this study proposed a drilling and repairing failure drainage borehole technique by utilizing high-velocity water

Application of Remote Control Technology in Gas Drainage Drilling

2020.10.1 In view of the potential safety hazards such as gas-shot, gas-outburst and personal injury in the construction of gas drainage and drilling in coal mine, the

Evolution and application of in-seam drilling for gas drainage

2013.7.1 The key components of the OMP were: (1) drilling boreholes on a proposed design layout to effect gas drainage; (2) monitor gas flows from the boreholes to assess

Advanced directional drilling technology for gas drainage

2011.1.1 gas drainage geological exploration in-seam directional drilling gas outburst safe mining

LQ*DV 'UDLQDJH'ULOOLQJ5LJLQRDO0LQH - IOPscience

2022.6.17 drilling machine to drill and withdraw automatically with one-key mode, and realize automatic moving, anchoring and positioning. As a result, the unmanned process

Research on Automatic Counting of Drill Pipes for Underground Gas ...

2023.9.12 Research on Automatic Counting of Drill Pipes for Underground Gas Drainage in Coal Mines Based on YOLOv7-GFCA Model by Tiyao Chen *, Lihong Dong

Drilling Hydraulics - an overview ScienceDirect Topics

Drilling hydraulics is mainly discussing the pressure needed during drilling to improve drilling and provide sufficient cutting removal capacity and decreasing pressure losses in the

Research and application of high-pressure water jets

2022.12.22 When the gas drain-age boreholes are located at soft, fractured coal rock seams, phenomena such as borehole collapse and blockage occur frequently, resulting

A Data-Driven Fine-Management and Control Method of Gas

2022.12.15 In order to improve the efficiency of gas extraction in coal mines, a data-driven fine-management and control method for gas extraction is proposed. Firstly, the accurate prediction of coal seam thickness and gas content was used to evaluate the gas reserves. Based on the time relationship between mining activities and gas extraction,

Research and application of high-pressure water jets

2022.12.22 tion is completed for 12–54 days. And the gas drain-age concentration of 27.8% boreholes decreased to 0.2–6.7%, resulting in an extremely poor gas drainage eciency (Su et al. 2014). Besides, the gas drain-age ow of some boreholes in Songzao mining area rapidly decreased from 0.07 to 0.01 m3/min only after one week gas drainage.

Improvement of drilling quality using precision directional drilling ...

2022.6.3 The problem of boreholes deflection in coal mines is common, especially in soft and hard composite coal seams. As a result, the distribution of boreholes is uneven and forms a blank zone in the drainage area, which fails to achieve the regional pre-draining, causing gas explosion or coal and gas outburst accidents. Aiming at the above problems,

Specialised Gas Drainage Drill Rig Overhaul for Illawarra Coal

Berendsen Wollongong have also performed Mancar and Dollycar upgrades, gas drainage rig and gas drainage reamer overhauls as well as supplied filters and various hydraulic components to the customer. Berendsen Wollongong were chosen to perform the hydraulic overhaul on the drill rig due to their proven repair history with the machines, expert ...

Advanced directional drilling technology for gas drainage

2011.1.1 Advanced directional drilling technology for gas drainage and exploration in Australian coal mines. Author links open overlay panel Fangtian Wang a b c, Ting X Ren c, Frank Hungerford ... [17]: a) 75 kW, 1000V hydraulic power unit to power the rig and the water pump, b) 250 l/min water supply and a 10 MPa high pressure pump, c) 135 kN

Deviation Principles of Gas Drainage Drilling in Three-Soft

2022.3.1 The trajectory of the actual gas drainage drilling often deviates from the design in the process of gas control drilling construction, resulting in the deviation of the drilling. The deviation may produce blind areas of gas drainage and induces potential safety hazards. In the present study, we use theoretical analyses and numerical simulations to

Application of Remote Control Technology in Gas Drainage Drilling

2020.10.1 In view of the potential safety hazards such as gas-shot, gas-outburst and personal injury in the construction of gas drainage and drilling in coal mine, the technology and equipment of controlling drilling rig far away from the drilling field are studied to improve the automation level [1].This technology can realize the "one-key" mode to control the

Directional Drilling - an overview ScienceDirect Topics

Shale Gas Production Technologies. Sohrab Zendehboudi PhD, Alireza Bahadori PhD, CEng, in Shale Oil and Gas Handbook, 2017. 5 Drilling Methodology. Directional drilling commences at the surface as a vertical well. This drilling will commence until the drill front is approximately 100 m above the target. At this point, there is a hydraulic motor attached

Discussion on the Development of Intelligent Drilling

Keywords: gas drainage; intelligent drilling; development Project Fund: 2018-TD-ZD016, special project of technology and engineering innovation fund of Tiandi ... and extend the distance between the hydraulic rig console and the main machine to improve the safety of the construction personnel[1]. However, this kind

(PDF) Application of Remote Control Technology in Gas Drainage Drilling ...

2020.10.1 Based on the analysis of gas emission sources and the logical drainage parameters, firstly, Daning coal mine arranged some drilling fields, then utilized the VLD-1000-type rig to drill boreholes ...

Improvement of methane drainage in high gassy coal seam

2009.7.1 1.. IntroductionThe first systematic gas drainage system was developed in China in 1952, and there were 1146 million m 3 gas drained from coal mines in 2002, and it is estimated that annual gas drainage will be 1800–2000 million m 3 in 2010. Even though, the great efforts on gas drainage have been made, the Chinese coal mining industry is

Discussion on the Development of Intelligent Drilling

Research and application of high-pressure water jets drilling

2022.11.7 Su et al. developed a hydraulic drilling equipment for gas drainage by using coiled tubing and water jets breaking rock, and established a set of blocked borehole repairing process including blocked boreholes judgment, borehole repair, and repair effect evaluation. However, the self-propelled force generated by water jet bits in removing ...

(PDF) Experimental Study Via Dynamic Prediction Model on

2021.1.1 PDF In view of the difficult problem of dynamic disaster prevention and control in deep high gas, high stress and low permeability coal seam, the... Find, read and cite all the research you ...

Status and Development of Directional Drilling

2014.1.1 Construction technology and equipment for gas drainage borehole drilling in underground coal mine [J]. Coal Science and Technology, 2009, 137(7): 1-4. [3] SHI Zhi-jun, HU Shao-yun, YAO Ning-ping, New Technology of Borehole Construction for Gas Drainage in Underground Mine [M], Beijing: China Coal Industry Publishing House,2008. [4]

Comparative experiments of gas drainage in different

2017.8.27 the effect of gas drainage. Comparative experiment of gas drainage in different types of drillings shows that the initial rate of gas natural emission by hydraulic loosed cross drilling is 1.5 times more than that of parallel drilling, and the drilling gas at-tenuation coefficients reduces to 0.78 times, the effect of gas drainage is good.

CN104806284B - Intelligent top-cave hydraulic support gas drainage ...

An intelligent top-cave hydraulic support gas drainage device comprises a base, a supporting frame, an exhaust pipe, a gas collection sleeve, a gas collection pipe and a driving motor. The gas collection sleeve rotatably sleeves the lower end of the exhaust pipe, the exhaust pipe is vertically arranged, a spiral blade is arranged on the circumferential

Coal Seam Gas Extraction by Integrated Drillings and

2022.1.7 the law of gas extraction by drilling and punching boreholes. After adopting the gas extraction technology of drilling and hydraulic punching from the ﬂoor roadway, the remaining gas pressure and gas content are reduced to lower than 0.5MPa and 5.68m3/t, respectively. The achievements set a theoretical foundation to the application of ...

Drilling and completion technologies of coalbed methane

2022.9.22 Coalbed methane (CBM) drilling and completion technologies (DCTs) are significant basis for achieving efficient CBM exploration and exploitation. Characteristics of CBM reservoirs vary in different regions around the world, thereby, it is crucial to develop, select and apply the optimum DCTs for each different CBM reservoir. This paper firstly

CN109296314A - A kind of upper and lower drill rod mash gas

The invention discloses drill rod mash gas cross drainage drilling machines above and below a kind of novel automation, by crawler type walking mechanism, workbench, on hold out against hydraulic cylinder, gyrator, clamper, drilling machine hydraulic motor, differential mechanism, upper boring rod set, motor, fuel tank, drilling rod and constitute, present