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Article
Multi-step Fracturing Radial Boreholes for Efficient Development of Unconventional Gas Reservoirs
Radial borehole fracturing is a production method that combines ultrashort radius radial boreholes with hydraulic fracturing, which is expected to effectively improve the drainage and transformation effect of ...
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Article
Transport Pattern and Placement Characteristics of Proppant in Different Rough Fractures
The transport and placement characteristics of proppant in rough fracture is of great significance for optimizing fracturing parameters and making proppant transport to the deep part of fracture for effective ...
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Article
Prediction of Shale Gas Production by Hydraulic Fracturing in Changning Area Using Machine Learning Algorithms
Machine learning has been widely used for the production forecasting of oil and gas fields due to its low computational cost. This paper studies the productivity prediction of shale gas wells with hydraulic fr...
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Article
Enhanced erosion on sedimentary rock by adding abrasive nanoparticles in ultrasonic cavitation
Cavitation erosion on sedimentary rocks by addition of abrasive nanoparticles was evaluated through ultrasonic cavitation experiments. Two kinds of typical sedimentary rocks, sandstone and organic-rich shale, ...
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Article
Acoustic Emission Characteristics of Sedimentary Rocks Under High-Velocity Waterjet Im**ement
The success of waterjet drilling technology requires further insight into the rock failure mechanisms under waterjet im**ement. By combining acoustic emission (AE) sensing and underwater sound recording tech...
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Article
Open AccessA Comprehensive Model for Real Gas Transport in Shale Formations with Complex Non-planar Fracture Networks
A complex fracture network is generally generated during the hydraulic fracturing treatment in shale gas reservoirs. Numerous efforts have been made to model the flow behavior of such fracture networks. Howeve...
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Article
Rock Pore Structure Damage Due to Freeze During Liquid Nitrogen Fracturing
Liquid nitrogen has been successfully used as a fracturing fluid in petroleum engineering. When liquid nitrogen is pumped into a well, the physical conditions of the reservoir rocks will be altered. In these e...
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Article
Research and application of water jet technology in well completion and stimulation in China
In recent years, rapid progress in the use of high pressure water jets (HPWJ) has been made in oil and gas well drilling, completion, and stimulation; and good results have been achieved in field applications....
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Article
Theoretical and experimental study of the pulling force of jet bits in radial drilling technology
Radial drilling technology, of which the jet bit is the key device, is a research focus in the field of oil drilling and production. This paper establishes mechanical equations for jet bits and analyzes the hy...
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Article
Numerical modeling of DPSK pressure signals and their transmission characteristics in mud channels
A numerical model and transmission characteristic analysis of DPSK (differential phase shift keying) pressure signals in mud channels is introduced. With the control logic analysis of the rotary valve mud tele...
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Article
Mechanism and numerical simulation of pressure stagnation during water jetting perforation
When perforating with an abrasive water jet, it is possible that the pressure in the hole (perforation) will be higher than that in the annulus because of water jet blasting against the hole wall, which also i...
