Results 21 to 30 of about 1,938,015 (214)

Fracture Characteristics and its Role in Bedrock Reservoirs in the Kunbei Fault Terrace Belt of Qaidam Basin, China

Frontiers in Earth Science, 2022
Fracture characteristics at bedrock reservoirs in the Kunbei fault terrace belt in the southwest of Qaidam Basin, China, are investigated based on cores, thin sections, formation microscanner imaging, and production data.
Zhaosheng Wang, Hui Xiang, Libin Wang, Lin Xie, Zhenguo Zhang, Zhenguo Zhang, Lianfeng Gao, Zhifeng Yan, Fuling Li   +8 more
doaj   +1 more source

APPLICATION OF THE KAISER EFFECT IN IN-SITU STRESS MEASUREMENT IN ROCKS - AN OVERVIEW

Rudarsko-geološko-naftni Zbornik, 2022
Knowledge of in-situ rock stress is one of the significant issues in many engineering problems. There are various methods for determining in-situ stress. Most of the common methods used for the determination of in-situ stress are time and cost consuming,
Mohammadmahdi Dinmohammadpour, Majid Nikkhah, Kamran Goshtasbi, Kaveh Ahangari   +3 more
doaj   +1 more source

Early identification on failure mode of loess landslide: insight from case study and physical model experiment

Frontiers in Earth Science
IntroductionThe Loess Plateau has long been plagued by cascading loess landslides. The rapid identification of these landslides, along with the accurate determination of their failure modes, is essential for conducting precise disaster assessments in the
Ran Li, Ran Li, Ran Li, Jiangkun He, Han Zheng, Chenyuan Zhang, Shuai Zhang, Shuai Zhang, Shuai Zhang   +8 more
doaj   +1 more source

Determination of stress state in deep subsea formation by combination of hydraulic fracturing in situ test and core analysis: A case study in the IODP Expedition 319

, 2013
[1] In situ test of hydraulic fracturing (HF) provides the only way to observe in situ stress magnitudes directly. The maximum and minimum horizontal stresses, SHmax and Shmin, are determined from critical borehole pressures, i.e., the reopening pressure
Ito, Takatoshi, David F. Boutt, Ito, Hisao, Byrne, Timothy, Takatoshi Ito, Doan, Mai-Linh, Funato, Akio, Yasuyuki Kano, Lisa C. McNeill, Mai‐Linh Doan, Demian Saffer, McNeill, Lisa C., Saffer, Demian, Timothy Byrne, Lin, Weiren, Boutt, David F., Kano, Yasuyuki, Moe, Kyaw Thu, Kyaw Thu Moe, Akio Funato, Hisao Ito, Weiren Lin   +21 more
core   +1 more source

Determination of In-Situ Stress and Geomechanical Properties from Borehole Deformation

Energies, 2018
This paper proposes a cost-effective technique to determine geomechanical properties and in-situ stress from borehole deformation data. In this approach, an artificial neural network (ANN) is applied to map the relationship among in-situ stress, borehole
Hong Xue Han, Shunde Yin
doaj   +1 more source

A multiscale constitutive model for intergranular stress corrosion cracking in type 304 austenitic stainless steel [PDF]

, 2013
Intergranular stress corrosion cracking (IGSCC) is a fracture mechanism in sensitised austenitic stainless steels exposed to critical environments where the intergranular cracks extends along the network of connected susceptible grain boundaries.
Rahimi, S, Rahimi, S., Siddiq, Amir, Siddiq, A, Rahimi, Salaheddin   +4 more
core   +1 more source

Analysis on the Initial Cracking Parameters of Cross-Measure Hydraulic Fracture in Underground Coal Mines

Energies, 2015
Initial cracking pressure and locations are important parameters in conducting cross-measure hydraulic fracturing to enhance coal seam permeability in underground coalmines, which are significantly influenced by in-situ stress and occurrence of coal seam.
Yiyu Lu, Liang Cheng, Zhaolong Ge, Binwei Xia, Qian Li, Jiufu Chen   +5 more
doaj   +1 more source

Brittleness Evaluation in Shale Gas Reservoirs and Its Influence on Fracability

Energies, 2020
The brittleness index (BI) is a key parameter used to identify the desirable fracturing intervals of shale gas reservoirs. Its correlation with fracability is still controversial. There have been a variety of methods proposed that can estimate BI.
Yapei Ye, Shuheng Tang, Zhaodong Xi
doaj   +1 more source

Measurements Of In Situ Stress And Mining-Induced Stress In Beiminghe Iron Mine Of China

, 2009
In order to obtain the distribution rules of in situ stress and mining-induced stress of Beiminghe Iron Mine, the stress relief method by overcoring was used to measure the in situ stress, and the MC type bore-hole stress gauge was adopted to measure the
Xu WC, Li CH, Li HJ, Ouyang ZH, 欧阳振华   +4 more
core   +1 more source

Susceptibility assessment of geological hazards in Shenzhen Town, Ninghai county based on the APH-CF model

Frontiers in Earth Science
IntroductionThis work employs a coupled evaluation model that integrates deterministic coefficients with the Analytic Hierarchy Process to conduct a comprehensive assessment of geological disaster susceptibility in Shenzhen Town, Ninghai County ...
Shuai Han, Ran Li, Ran Li, Ran Li, Shujun Hui, Qiang Sun, Taili Zhang   +6 more
doaj   +1 more source