Results 31 to 40 of about 111,777 (169)

Natural Course of Orbital Roof Fractures [PDF]

Craniomaxillofacial Trauma & Reconstruction, 2014
The natural course of several isolated and nonisolated orbital roof fractures is reported, by showing four cases in which a “wait and see” policy was followed. All four cases showed spontaneous repositioning and stabilizing of the fracture within less than a year.
Liselotte H M, Stam, Eppo B, Wolvius, Warren, Schubert, Maarten J, Koudstaal   +3 more
openaire   +2 more sources

Application of five seismic attributes in natural fracture prediction for deep coalbed methane production along the eastern margin of the Ordos Basin

Meitian dizhi yu kantan
BackgroundNatural fractures serve as both the primary storage space for free gas of deep coalbed methane (CBM) and pathways for hydrocarbon migration. Furthermore, these fractures can enhance the porosity and permeability of strata under the deep, high ...
Jiangnan TONG, Feng WANG, Feng ZHANG, Wei HOU, Zhongbai LI, Liang JI, Yanan JIANG, Wei SUN   +7 more
doaj   +1 more source

Effect of Multiple Flow Pulses on Hydraulic Fracture Network Propagation in Naturally Fractured Volcanic Rock

Energies, 2020
Exploring engineering methods for increasing fracture network complexity is important for the development of unconventional oil and gas reservoirs. In this study, we conducted a series of fracturing experiments on naturally fractured volcanic samples. An
Guangzhi Yang, Shicheng Zhang, Jia Wang, Ning Li, Xinfang Ma, Yushi Zou   +5 more
doaj   +1 more source

Development characteristics of natural fractures in horizontal wells for deep shale gas and their implications for enhanced development: a case study of Wufeng-Longmaxi formations in Luzhou area, southern Sichuan Basin

Shiyou shiyan dizhi
The analysis of natural fracture development characteristics is crucial for evaluating deep shale gas exploration and development. It provides valuable insights for assessing reservoir quality comprehensively and designing fracturing strategies ...
Xuefeng YANG, Ziqiang XIA, Shengxian ZHAO, Yuanhan HE, Ruiqi GAO, Lieyan CAO   +5 more
doaj   +1 more source

Optimal Design of Hydraulic Fracturing for Deep Volcanic Reservoir in Zhungeer Basin

MATEC Web of Conferences, 2017
Deep volcanic reservoir in Xinjiang Zhungeer basin is buried over 4000m, the elastic modulus of reservoir rocks is high, hence it is difficult to initiate hydraulic fracture during fracturing operation; fracturing fluid filtration is serious and hard to ...
Cheng Hao, Huang Bo, Han Shijie, Fu Yanming   +3 more
doaj   +1 more source

Study on characteristics, efficiency, and variations of water flooding in different stages for low permeability oil sandstone

Energy Science & Engineering
Water flooding is an important way to improve recovery in low‐permeability sandstone oil reservoirs. How to decouple the water flooding process using dynamic and static information is a hot topic.
Houjiang Fan, Xiaoqiang Liu, Gang Li, Xiang Li, Ahmed E. Radwan, Shuai Yin   +5 more
doaj   +1 more source

The Influence of the Distribution Characteristics of Complex Natural Fracture on the Hydraulic Fracture Propagation Morphology

Frontiers in Earth Science, 2022
Natural fractures are common in unconventional reservoirs (e.g., tight oil and gas, shale oil and gas), for which hydraulic fracturing is the main exploitation method.
Huan Zhao, Wei Li, Lei Wang, Jing Fu, Yun Long Xue, Jian Jun Zhu, Si Qi Li   +6 more
doaj   +1 more source

Comprehensive Investigation of Factors Affecting Acid Fracture Propagation with Natural Fracture

Energies
Acid fracturing is a crucial stimulation technique to enhance hydrocarbon recovery in carbonate reservoirs. However, the interaction between acid fractures and natural fractures remains complex due to the combined effects of mechanical, chemical, and ...
Qingdong Zeng, Taixu Li, Long Bo, Xuelong Li, Jun Yao   +4 more
doaj   +1 more source

Genetic types of weathering-induced fractures in carbonate reservoirs in Fuxian area of Ordos Basin and their impact on hydrocarbon enrichment

Youqi dizhi yu caishoulu
The Lower Paleozoic carbonate rocks in the Ordos Basin are characterized by substantial depositional thickness and extensive distribution， with reservoirs exhibiting tight lithology， low porosity， and low permeability.
MAO Jinxin, HE Jianhua, XIE Xinhui, DENG Hucheng, WANG Xia, CAO Feng, XING Zimeng   +6 more
doaj   +1 more source

Hydraulic fracture extension characteristics of fractured formation based on phase field method

Youqicang pingjia yu kaifa, 2022
Based on the theory of phase field method, a model of fracture propagation in porous elastic formation is established. In the proposed model, the fluid flow in the porous rock obeys Darcy’s seepage law, and the permeability of rock is anisotropic and a ...
YI Liangping, ZHANG Dan, YANG Ruoyu, XIAO Jialin, LI Xiaogang, YANG Zhaozhong   +5 more
doaj