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The Optimization Program of Reverse Circulation Drilling Equipment
Advanced Materials Research, 2013Based on the analysis of the problems about the reverse circulation drilling in the practical application, such as the ability of the drilling depth, application in the loose layer, the construction of the pile hole with large diameter, three optimization programs are put forward, and evaluated in combination with the project examples of Wuhan ...
Xiao Hui Xue +2 more
exaly +2 more sources
Tunnelling and Underground Space Technology, 2020
Abstract To overcome the inefficient cuttings transportation performance of current large-diameter Horizontal Directional Drilling (HDD), the application of reverse circulation technology during the reaming process was studied resulting in the development of a novel reverse-circulation reamer.
Samuel T Ariaratnam +2 more
exaly +2 more sources
Abstract To overcome the inefficient cuttings transportation performance of current large-diameter Horizontal Directional Drilling (HDD), the application of reverse circulation technology during the reaming process was studied resulting in the development of a novel reverse-circulation reamer.
Samuel T Ariaratnam +2 more
exaly +2 more sources
IMPROVEMENT OF TECHNOLOGY FOR DRILLING LARGE DIAMETER WELLS WITH REVERSE CIRCULATION
SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”, 2022Purpose. The aim of this work is to develop an improved circulating system for airlift reverse circulation drilling in such a way that it allows the use of commercially available drill pipes with conventional connections. Methodology. The tasks were solved by a complex research method, which includes a review and generalization of literary and patent ...
Marian Biletsky +4 more
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Studies on pneumatic transport of ice cores in reverse circulation air drilling
Powder Technology, 2019Abstract Reverse circulation air drilling is considered one of the most promising technologies in ice core drilling because it can provide many benefits such as avoiding air circulation loss in snow-firn zones, promoting penetration rate, and shortening the time required for ice core recovery. The key of this technology is using a pneumatic conveying
Pinlu Cao, Hongyu Cao, Baoyi Chen
exaly +2 more sources
Erosion Law of Inner Drill Pipe in Reelwell Reverse Circulation Directional Drilling
Materials Science Forum, 2019In the process of ReelWell reverse circulation directional drilling, the drilling fluid returns through the inner drill pipe, and the debris particles continuously eroded and wear the drill pipe in the inclined section, which easily causes the failure of the inner drill pipe erosion.
Tao Huang
exaly +2 more sources
Research and Application of Reverse Circulation Drilling Technology
Proceedings of International Oil & Gas Conference and Exhibition in China, 2006Abstract The reverse circulation drilling technology is that drilling fluid is pumped down to the annulus, through drill bit and inside of the drilling tool, comes back to the ground. It has many advantages, such as reducing the formation leakage, protecting the oil and gas formation, and cutting sample very clear etc.
Lichang Li +3 more
openaire +1 more source
A mathematical model of the motion of cutting particles in reverse circulation air drilling
Applied Mathematics and Computation, 2015In reverse circulation air drilling, the cutting particles are carried by compressed air to the central channel at the bottom of the borehole and then up to the surface. Keeping the bottom of the borehole clean is a difficult; thus, a mathematical model was proposed for studying the motion of cutting particles. The model describes the motion of cutting
Lihong Zhu +3 more
exaly +2 more sources
A novel reverse circulation drilling device for the underground sampling to soft coal
Arabian Journal of Geosciences, 2021Drilling and coal sampling is the necessary prerequisite to determine the parameters of prediction and prevention for coal and gas outburst in underground coal mine. The integrity of samples is very important for the prediction of parameters. Therefore, a novel sampling device has been developed based on a combination of reverse circulation drill ...
Xianshang Zhang +6 more
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Arabian Journal for Science and Engineering, 2017
In pneumatic down-the-hole hammer drilling with reverse circulation, dusty air often escapes from the borehole due to the adverse effects of reverse circulation, which not only pollutes the surrounding environment, but also affects workers’ health. In order to address this issue, a new type of drill bit, designed with a swirling generator, has been ...
Pinlu Cao, Yunwang Chen, Baoyi Chen
exaly +2 more sources
In pneumatic down-the-hole hammer drilling with reverse circulation, dusty air often escapes from the borehole due to the adverse effects of reverse circulation, which not only pollutes the surrounding environment, but also affects workers’ health. In order to address this issue, a new type of drill bit, designed with a swirling generator, has been ...
Pinlu Cao, Yunwang Chen, Baoyi Chen
exaly +2 more sources
Journal of Energy Resources Technology, 2021
Abstract Reverse circulation gas drilling has been considered to solve engineering problems such as formation water influx, wellbore instability, and excess gas requirement in gas drilling. The performance of reverse circulation gas drilling depends to a large extent on the structure design of the drill bit.
Xu Yang +2 more
openaire +1 more source
Abstract Reverse circulation gas drilling has been considered to solve engineering problems such as formation water influx, wellbore instability, and excess gas requirement in gas drilling. The performance of reverse circulation gas drilling depends to a large extent on the structure design of the drill bit.
Xu Yang +2 more
openaire +1 more source