Results 61 to 70 of about 26,087 (268)

Implementations of star evaluation management model in complex high water-cut gas field during its integrated development of geological engineering

Youqicang pingjia yu kaifa, 2021
Poor reserve quality, high water-cut and high investment cost have become the bottleneck of developing Dongsheng Gas Field located in Ordos Basin. In this way, the star evaluation management model is put forward to enhance its production performance.
LIU Xiaobo, ZHOU Yongyi, WANG Zhi, LEI Tao, WANG Xiang, YOU Qidong, CAO Tongsheng, CHEN Kui, LIU Tao, YU Yaonan   +9 more
doaj  

Determination of the radius of the zone of explosive loosening of a fractured rock mass when blasting a borehole charge

Технічна інженерія, 2020
The work presents the results of scientific research on determining the radius of the zone of explosive loosening of fractured rock massifs during the explosion of a borehole charge of an explosive in it.
O.O. Frolov, M.I. Beltek
doaj   +1 more source

Solid‐State Diffusion and Intermetallic Phase Formation in Roll‐Bonded Mg–Zn Composites With Kirigami‐Patterned Inlay

Advanced Engineering Materials, EarlyView.
Mg–Zn composites with a thickness of 0.21 mm were fabricated using roll bonding of a kirigami‐patterned Mg alloy inlay within a Zn matrix. Thermal activation following this process led to the formation of tailored intermetallic structures, which provided the composite with enhanced flexural strength.
Yaroslav Frolov, Oleksandr Bobukh, Christian Klose, Florian Nürnberger, Hans Jürgen Maier   +4 more
wiley   +1 more source

Mixing characteristics in perforation due to the delivery of combustion-supporting agent by jet for in-situ combustion of methane fracturing

Meitan xuebao
As a disruptive reservoir stimulation technology in unconventional natural gas development, in-situ methane combustion fracturing generates complex fracture networks through high-temperature and high-pressure shockwaves produced by the combustion of ...
Chengzheng CAI, Ya’nan GAO, Mingzhong GAO, Zhixiang TAO, Weifu SUN, BO WANG, Zhengchao ZHU, Zengxin ZOU   +7 more
doaj   +1 more source

Volume fracturing technology of deep shale gas in southern Sichuan

Youqicang pingjia yu kaifa, 2021
Due to the deep buried depth（3 500～4 200 m）, high ground stress, high ground stress discrepancy（7 to 17 MPa）, low reservoir brittle（< 0.5）and the undeveloped natural fracture, the hydraulic fracture of Weirong deep shale gas face the problems of high ...
Wang Xingwen, Lin Yongmao, Miao Weijie
doaj  

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

Advanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

Practical results of scattered waves using for prediction of fractures zones and evaluation of faults conductivity concerning oil and gas field

Известия высших учебных заведений: Нефть и газ
The main task in the modern development of the oil industry in in each area is creating a rational strategy for the exploration and hydrocarbon production.
V. I. Kuznetsov
doaj   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Study of texture changes in the emptiness of rocks under the tension conditions by electron microscopy methods

Georesursy
On the example of an oil deposit of the Vereisk age which is one of the deposits in the Volga-Urals, lithotypes of rocks are distinguished, characterized by a fundamentally different structure of the void space.
B. M. Osovetsky, K. P. Kazymov, I. Y. Kolychev, Ya. V. Savitckii, S. V. Galkin   +4 more
doaj   +1 more source

Microstructure‐Controlled Crack Propagation and Fracture Resistance in MoSiBTiC Alloy Revealed by Multiscale Extended Finite Element Method Modeling

Advanced Engineering Materials, EarlyView.
A two‐dimensional multiscale finite element analysis framework was established for the first‐generation MoSiBTiC alloy, and the mechanical and fracture‐related parameters of the constituent phases were calibrated through experiments and simulations. The framework provides a basis for analyzing crack propagation behavior in its complex microstructure ...
Junfeng Du, Takahiro Kaneko, Xinyu Yan, Takahito Ohmura, Kyosuke Yoshimi   +4 more
wiley   +1 more source