Results 41 to 50 of about 17,122 (265)

DÜNYA BARİT MADENCİLİĞİNİN DURUMU VE PİYASALARDA REKABET DÜZEYİNİN GELİŞİMİ

Eskişehir Osmangazi Üniversitesi Mühendislik ve Mimarlık Fakültesi Dergisi, 2021
Barite is a critical raw material used in many sectors, especially in oil, natural gas and shale gas exploration. Due to the concentration of approximately 79% of the existing 300 million tons of barite reserves in the world in four countries as of 2020,
Hakan AK, Mehmet AKSOY, Adnan KONUK
doaj   +1 more source

Barite

, 1988
More than 150 occurrences or deposits of barite (barium sulphate, BaSO 4) have been recorded in Canada; however, deposits of economic significance are confined largely to Newfoundland, Nova Scotia, Ontario and British Columbia. There are three main producers of barite at present: one with a mine at Brookfield, N.S., another with mines near Matachewan ...
R K Collings, P R A Andrews
openaire   +1 more source

Investigation on the failure evolution characteristics of surrounding rock in deep cross‐fault roadway: Based on physical model test and numerical simulation

Deep Underground Science and Engineering, EarlyView.
This study reveals the failure evolution characteristics of deep cross‐fault roadway surrounding rock under excavation support and periodic weighting. Periodic weighting readily induces fault activation, with the spatial distribution of failed rock masses being controlled by the fault strike and dip.
Tiezhu Li, Suping Peng, Jing Zheng, Zhanhua Yang, Qijun Tian   +4 more
wiley   +1 more source

BARITE SAG UNDER DYNAMIC AND ELEVATED TEMPERATURE CONDITIONS: EXPERIMENTAL STUDIES AND MATHEMATICAL MODELING [PDF]

, 2019
Barite sag is an undesired occurrence that causes density variation in the wellbore. It is a problem that is related to both fluid property (mainly rheology) and drilling practices, and it arises mostly in invert emulsion muds.
Fakoya, Muili Feyisitan
core  

Evidence From Microscopy and U–Pb Geochronology as a Clue to the Influence of the Cretaceous Magmatism in the Diagenesis of Pre‐Salt Carbonate Reservoirs in the Santos Basin (Brazil)

Geological Journal, EarlyView.
Carbonates from Santos Basin revealed U–Pb ages correlated with basalt ages (A), suggesting that they were formed during magmatic events. These events placed hot CO2 in the reservoir, which, when mixed with carbonate‐rich cold water (B), led to thermal convection, enabling the formation of the U contained in the carbonates.
Marco António Ruivo de Castro e Brito, Cristiano Leite Sombra, Davy Raeder Brandão, Cleverson Guizan Silva, Sidney Luiz de Matos Mello, Eugênio Vaz dos Santos Neto, Rui Jorge Fernandes Baptista, Ramsés Capilla, Luiz Antônio Pierantoni Gambôa   +8 more
wiley   +1 more source

Replacement of Ores Recorded by Textures and Chemical Compositions of Sphalerite: An Example From the Furutobe Kuroko Deposit, Akita, Japan

Geological Journal, EarlyView.
Coupled dissolution‐reprecipitation of early formed Cd‐, Fe‐, Ag‐ and Sb‐poor sphalerite through interaction with high‐temperature and high‐sulphur fugacity Cu‐rich fluids, responsible for the formation of the yellow ores, resulted in the formation of Cd‐, Fe‐, Ag‐ and Sb‐rich, heavily chalcopyrite‐diseased sphalerite and enrichment of critical metals ...
Manuel Nopeia, Ryohei Takahashi, Andrea Agangi, Pearlyn Manalo, Hinako Sato   +4 more
wiley   +1 more source

Dissolution of barite using coordination chemistry: Optimization and characterization

Results in Chemistry, 2023
This work included two different types of dissolving process (inorganic and organic) which used for the complete dissolving barium sulfate (barite). The inorganic solvents were involved digestion on hotplate with recipe of mixture acids with hydrogen ...
Fouad S. Al-Kaabi, Raghad A. Hussein, Mustafa A. Abdulkareem   +2 more
doaj   +1 more source

Microemulsion‐Based Drilling Fluids Incorporating Seashell Residue Powder: A Sustainable Approach to Fluid Loss Control

Journal of Surfactants and Detergents, EarlyView.
Two microemulsion‐based drilling fluids incorporating SSRP were formulated using pine oil, the nonionic surfactant Alkonat L100W, and a glycerol/water solution. The results provide valuable insights into how surfactant‐assisted microemulsion systems can be engineered to enhance the performance and eco‐efficiency of drilling fluids.
Luara Ribeiro Viana, Raphael Ribeiro da Silva, João Pedro Gonçalves de Souza Soares, José Cavalcante de Queiroz Neto, Maria Eduarda Araújo Pessoa, Rafael Peixoto Alves, Fabiola Dias da Silva Curbelo   +6 more
wiley   +1 more source

Drilling the Marathousa palaeo‐lake in Greece (Peloponnese): inferring the environmental context of a Middle Pleistocene archaeological site

Boreas, EarlyView.
The Megalopolis Basin is located in the central Peloponnese (Greece), a region that is situated along one of the primary Pleistocene biogeographical corridors for intracontinental hominin migration. The basin comprises several hundred metres of Plio‐Pleistocene sediments alternating between clastics and lignites.
Ines J. E. Bludau, Bernd Wagner, Uwe Kirscher, Maria Schindler, Charlotte Zachow, Johannes Schmidt, Niklas Leicher, Giovanni Muttoni, Serena Perini, Vangelis Tourloukis, Eleni Panagopoulou, Panagiotis Karkanas, Katerina Harvati, Annett Junginger   +13 more
wiley   +1 more source

Prevention of Barite Sag in Water-Based Drilling Fluids by A Urea-Based Additive for Drilling Deep Formations

Sustainability, 2020
Barite sag is a challenging phenomenon encountered in deep drilling with barite-weighted fluids and associated with fluid stability. It can take place in vertical and directional wells, whether in dynamic or static conditions.
Abdelmjeed Mohamed, Saad Alafnan, Salaheldin Elkatatny, I. Hussein   +3 more
semanticscholar   +1 more source