Results 11 to 20 of about 4,886,512 (259)

Fracture propagation model accounting for intersection among hydraulic fractures and natural fractures in three-dimensional space

Meitan xuebao
Due to development of a large number of natural fractures in unconventional gas and oil reservoirs, the fracture expansion patterns during hydraulic fracturing are complicated. It is crucial to clarify the intersecting and expanding mechanical mechanisms
Yuwei LI, Yanru YANG, Aiwen WANG, Lianpeng DAI   +3 more
doaj   +2 more sources

Influence of Natural Fractures and Laminae on Fracture Propagation and Failure Mode of Continental Shale. [PDF]

Materials (Basel)
Natural fractures and laminae are well-developed in continental shale, which greatly affects the fracture propagation and failure mode. Based on the natural fractures and laminae developed in the outcrops of Triassic continental shale from the southern ...
Huang B, Qiao S, Li L, Gao X, Li X, Ranjith PG.   +5 more
europepmc   +2 more sources

Proximal humeral fractures with a severe varus deformity treated by fixation with a locking plate [PDF]

, 2010
We treated 47 patients with a mean age of 57 years (22 to 88) who had a proximal humeral fracture in which there was a severe varus deformity, using a standard operative protocol of anatomical reduction, fixation with a locking plate and supplementation ...
B. Olabi, J. R. Wylie, Robinson, C M, M. A. Akhtar, Akhtar, M A, C. M. Robinson, Wylie, J R, Dempster, N J, K. T. M. Seah, Ray, A G, A. G. Ray, Olabi, B, Seah, K T M, N. J. Dempster   +13 more
core   +1 more source

The epidemiology of fractures in England [PDF]

, 2008
Introduction: Fractures are a considerable public health burden in the United Kingdom but information on their epidemiology is limited. Objective: This study aims to estimate the true annual incidence and lifetime prevalence of fractures in England ...
Reckless, IP, Mindell, J.S., Reckless, I.P., Shelton, N.J., Donaldson, LJ, Donaldson, L.J., Scholes, S, Scholes, S., Mindell, JS, Shelton, NJ   +9 more
core   +1 more source

Fracture characteristics based on discrete element method [PDF]

Youqicang pingjia yu kaifa, 2023
In order to explore the characteristics of fracturing fractures of shale with weak plane development, a fracture propagation model of shale reservoirs taking the weak plane of bedding and natural fractures into account is established by the three ...
LI Xiaogang, HE Jiangang, YANG Zhaozhong, YI Liangping, HUANG Liuke, DU Bodi, ZHANG Jingqiang   +6 more
doaj   +2 more sources

Three‐dimensional simulation of the acidizing process under different influencing factors in fractured carbonate reservoirs

Energy Science & Engineering, 2023
Matrix acidizing is widely used to enhance oil/gas production in the exploitation of carbonate reservoirs. In this work, a three‐dimensional (3D) hydro‐chemical‐thermal (H‐C‐T)‐coupled model was presented to improve the understanding of the acidizing ...
Anbang Guo, Xuhai Tang, Jiangmei Qiao, Linbo Zhou, Pandeng Luo   +4 more
doaj   +1 more source

Paleotectonic Stress and Present Geostress Fields and Their Implications for Coalbed Methane Exploitation: A Case Study from Dahebian Block, Liupanshui Coalfield, Guizhou, China

Energies, 2023
The macroscopic structural fractures (joints) and geostress distribution characteristics of coal reservoirs are important factors affecting the exploitation of coalbed methane (CBM).
Jilin Wang, Youkun Wang, Xiaozhi Zhou, Wenxin Xiang, Changran Chen   +4 more
doaj   +1 more source

Simulation of Fracturing and Well Pattern Optimization of Fractured Tight Sandstone Reservoirs

Frontiers in Earth Science, 2022
The fracturing and well pattern optimization of fractured reservoirs is a hot spot in petroleum engineering. In this study, taking the tight oil reservoirs of the Yanchang Formation in the Ordos Basin as an example, an optimized plan of hydraulic ...
Jianbo Liao, Zhongyi Zhang, Haizhong Tang, Jun Yang, Xiaolei Zhang, Bing Wang   +5 more
doaj   +1 more source

Bone fractures after menopause [PDF]

, 2010
Every year 30% of individuals above age 65 fall, and falls are the principal cause of bone fractures. To reduce fracture incidence requires both prevention of falls and maintenance of bone strength.PubMed searches were performed, for studies of the ...
Ralston, Stuart H., J. L. Evers, Baird, D. T., A. Volpe, Ralston, S.H., Brandi, M.L., G. Benagiano, Brandi, Maria Luisa, S. H. Ralston, P.G. Crosignani, P. Bouchard, Rizzoli, R., ESHRE Capri Workshop Grp, Barlow, David H., La Vecchia, C., Negri, E., M. L. Brandi, P. G. Crosignani, Rizzoli, Rene, Benagiano, G., S. E. Papapoulos, Evers, J.L.H., D. H. Barlow, J. Collins, C. La Vecchia, Baird, D.T., Negri, Eva, Crosignani, P. G., Papapoulos, Socrates E., Glasier, A., R. Rizzoli, Barlow, D.H., A. Glasier, Vecchia, C. la, Collins, J., D. T. Baird, Volpe, A., Bouchard, P., Crosignani, P.G., Bouchard, Philippe, ?, ?, Papapoulos, S.E., E. Negri, Evers, J. L. H., ESHRE Capri Workshop Group., La Vecchia C, Glasier A, Brandi ML, Crosignani PG, Barlow DH, Rizzoli R, Bouchard P, Benagiano G, Volpe A, Evers JLH, Negri E, Ralston SH, Papapoulos SE, Baird DT, Collins J   +59 more
core   +1 more source

When, where and how osteoporosis-associated fractures occur: An analysis from the global longitudinal study of osteoporosis in women (GLOW) [PDF]

, 2013
Objective: To examine when, where and how fractures occur in postmenopausal women. Methods: We analyzed data from the Global Longitudinal Study of Osteoporosis in Women (GLOW), including women aged ≥55 years from the United States of America, Canada ...
Anderson, Frederick A, Adachi, JD, Stephen H Gehlbach, Universitat Autònoma de Barcelona. Departament de Medicina, Adachi, Jonathan D., Chapurlat, Roland D., Frederick H Hooven, Díez Pérez, Adolfo, Nelson B Watts, Adachi, Jonathan D, Nieves, JW, Netelenbos, J.C., Lyn March, Boonen, S, Saag, Kenneth G., Compston, Juliet E., Roux, Christian, Pfeilschifter, Johannes, Rossini, Maurizio, Boonen, Steven, Pfeilschifter J, Ethel S Siris, Boonen S, Siris, E.S., Anderson, F.A., LaCroix, Andrea Z., Siris, Ethel S., Adami, Silvano, Adami, S., Watts NB, Jeri W Nieves, Lacroix, A.Z., Watts, NB, Gehlbach SH, Roux, C., Maurizio Rossini, Compston, JE, Gehlbach, S.H., Costa AG, Pfeilschifter, J., Rossini, M., Christian Roux, Boonen, S., Greenspan SL, Susan L Greenspan, Watts, N.B., Compston JE, Costa, Aline G. [UNIFESP], Greenspan, Susan L., Gehlbach, SH, March, L., Adami, S, Saag KG, Roux, C, Adachi JD, Saag, KG, Anderson, Frederick A., Greenspan, SL, Compston, Juliet E, Anderson FA Jr, Saag, Kenneth G, Hooven, Frederick H., Netelenbos JC, Cooper, C., March, Lyn, Díez Pérez A, Nieves, Jeri W., Cooper, C, Adachi, J.D., March, L, Nieves, Jeri W, Hooven, F.H., Andrea Z LaCroix, Silverman S, LaCroix, Andrea Z, Kenneth G Saag, Watts, Nelson B, Adolfo Díez-Pérez, Chapurlat, RD, Saag, K.G., Aline G Costa, Silverman, Stuart, Rossini, M, Juliet E Compston, Compston, J.E., Diez-Perez, A., Diez-Perez, Adolfo, Wyman, Allison, Stuart Silverman, Chapurlat, Roland D, Anderson Jr, Frederick A., Nieves JW, Silverman, S., Netelenbos, J. Coen, Jonathan D Adachi, Roux C, Cyrus Cooper, Gehlbach, Stephen H., Siris, Ethel S, Netelenbos, J Coen, Roland D Chapurlat, Siris, ES, Frederick A Anderson, March L, Pfeilschifter, J, Costa, A.G., Hooven, FH, Allison Wyman, LaCroix, AZ, Gehlbach, Stephen H, Lacroix AZ, Chapurlat, Roland, Wyman, A., Chapurlat, R.D., Greenspan, Susan L, Díez-Pérez, A, Silvano Adami, Anderson, FA, Cooper, Cyrus, Costa, Aline G, Chapurlat RD, Wyman, A, J Coen Netelenbos, Hooven, Frederick H, Hooven FH, Siris ES, Steven Boonen, Wyman A, Silverman, S, Costa, Aline G., Greenspan, S.L., Watts, Nelson B., Johannes Pfeilschifter, Netelenbos, JC, Nieves, J.W., Costa, AG, Cooper C, Nieves Jeri W., Adami Silvano, Anderson Frederick A., Siris Ethel S., Cooper Cyrus, Adachi Jonathan D., Netelenbos J. Coen, Gehlbach Stephen H., Watts Nelson B., Díez-Pérez Adolfo, Silverman Stuart, Greenspan Susan L., Compston Juliet E., LaCroix Andrea Z., Saag Kenneth G., Rossini Maurizio, Wyman Allison, Boonen Steven, March Lyn, Hooven Frederick H., Pfeilschifter Johannes, Roux Christian, Chapurlat Roland D., Costa Aline G.   +160 more
core   +1 more source