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Advanced Search Results For "drilling"

1 - 10 of 80,136 results for
 "drilling"
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Investigation of Using Various Quantities of Steelmaking Waste for Scavenging Hydrogen Sulfide in Drilling Fluids.

Publication Type:Academic Journal

Source(s):Geofluids. 8/28/2022, p1-9. 9p. 1 Diagram, 3 Charts, 5 Graphs.

Abstract:Effective in situ scavenging of hydrogen sulfide (H2S) while drilling a sour formation is critical for limiting the prevalent related impacts and safety hazards. Thus, it is necessary to develop a specialized additive that can selectively react with H2...

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Tripability Analysis of Casing Strings in Directional Wells Using the Continuous Beam-Column and Buckling Theory.

Publication Type:Academic Journal

Source(s):Geofluids. 7/31/2022, p1-15. 15p. 7 Diagrams, 4 Charts, 7 Graphs.

Abstract:Hindered casing strings are often encountered in unconventional oil and gas exploration during the casing running process. This not only increases the operating costs and time but can also lead to downhole accidents and even abandonment in serious case...

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Numerical Assessment on Unloading Disturbance and Gas Extraction in Remote Distance Protective Layer Mining.

Publication Type:Academic Journal

Source(s):Geofluids. 8/16/2022, p1-17. 17p. 2 Color Photographs, 2 Diagrams, 8 Charts, 16 Graphs.

Abstract:Protective layer mining could not only significantly alter geostress but also increase the permeability of protected layer, which is beneficial for the coal gas extraction rate and ensures coal mining safety. However, due to unique geologic conditions,...

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Analysis of the Influence of Whipstock Point Position of Directional Drilling through Embankment on the Stability of Embankment Slope against Sliding.

Publication Type:Academic Journal

Source(s):Advances in Civil Engineering. 7/16/2022, p1-15. 15p.

Abstract:With the increasing number of river-crossing pipeline projects, many studies have focused on the safety and stability of embankment slopes in horizontal directional drilling crossing embankment construction. In addition, it is challenging to study the ...

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Ultra-High-Pressure Hydraulic Slitting Pressure Relief and Penetration Enhancement Technology and Equipment for Soft Coal Seams.

Publication Type:Academic Journal

Source(s):Geofluids. 7/16/2022, p1-18. 18p. 11 Color Photographs, 9 Diagrams, 5 Charts, 7 Graphs.

Abstract:There is a "bottleneck effect" in the extraction process of ordinary boreholes. It is crucial to enhance the permeability of the boreholes. In this paper, a set of ultra-high-pressure water jet-based drilling and slotting integrated equipment was desig...

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Economic quality design under model uncertainty in micro-drilling manufacturing process.

Publication Type:Academic Journal

Source(s):International Journal of Production Research. Feb2022, Vol. 60 Issue 3, p1086-1104. 19p. 1 Color Photograph, 8 Charts, 4 Graphs.

Abstract:Integrated parameter design and tolerance design (IPTD) is an effective way to improve product quality and reduce manufacturing cost in micro-manufacturing processes. However, the current modeling techniques rarely analyze the influence of model uncert...

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The Effect of Drilling Fluid on Coal's Gas-Water Two-Phase Seepage.

Publication Type:Academic Journal

Source(s):Geofluids. 6/16/2022, p1-7. 7p. 2 Diagrams, 5 Charts, 2 Graphs.

Abstract:In the process of coal bed methane (CBM) production, the output of CBM is mainly related to the relative permeability of gas and water in coal seams. However, during the drilling process, the invasion of drilling fluid into CBM reservoirs changes the w...

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Intelligent Drilling Depth Monitoring System for Geotechnical Site Investigation.

Publication Type:Academic Journal

Source(s):Shock & Vibration. 5/30/2022, p1-8. 8p.

Abstract:The drillhole depth is an indispensable parameter in the exploration process of drilling and coring engineering, but it is mainly calculated by manually counting the number of drill pipes. This highly subjective measurement method can easily lead to ar...

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Prediction and Optimization of Stability Parameters of Borehole Sensor for Deep Water Drilling Based on Genetic Algorithm.

Publication Type:Academic Journal

Source(s):Journal of Sensors. 5/14/2022, p1-7. 7p.

Abstract:In order to study the prediction and optimization of borehole stability parameters in deepwater drilling based on genetic algorithm. First, a genetic hybrid algorithm based on pattern search is proposed. Then, based on the adaptive genetic algorithm, t...

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Cutting Migration and Core Disturbance Caused by the Hydraulic Structure of Pressure- and Gas-Maintaining Coring Bits.

Publication Type:Academic Journal

Source(s):Geofluids. 5/4/2022, p1-10. 10p. 1 Color Photograph, 14 Diagrams, 2 Charts, 2 Graphs.

Abstract:Gas disaster prevention and control is essential to coal mine safety production, with accurate measurement of gas pressure and content being the challenging key aspect. Pressure- and gas-maintaining coring devices can characterize cores in situ to achi...

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