Results 71 to 80 of about 532 (178)

Identification and ranging of reservoir boundary in horizontal wells geosteering

Petroleum Exploration and Development, 2014
To make quantitative measurement of the distance between the drilling tool and the reservoir boundary in horizontal well drilling, this paper presented the method of “layer-detection ranging”, established the physical and mathematic models and designed ...
Lin LI, Xinmiao TENG, Limin SHENG, Mingbao ZHANG   +3 more
doaj   +1 more source

Decade‐long cereal rye cover cropping improved soil carbon and physical properties of a poorly structured silt loam

Soil Science Society of America Journal, Volume 89, Issue 6, November/December 2025.
Abstract Integrating cover crops into conventional cropping systems can improve soil health, but field management, soil type, and climate can limit the rate of improvements. This study evaluated the effects of cereal rye (Secale cereale) cover crops on soil organic carbon (SOC) content and physical properties in a no‐till, corn–soybean rotation on a ...
Kirsten A. Pearsons, Yichao Rui, Eileen J. Kladivko   +2 more
wiley   +1 more source

LMCT‐Driven Iron Photocatalysis: Mechanistic Insights and Synthetic Applications

Chemistry – A European Journal, Volume 31, Issue 58, October 16, 2025.
LMCT‐driven iron photocatalysis: This review discusses recent developments in ligand‐to‐metal charge transfer (LMCT)‐driven iron photocatalysis, emphasizing mechanistic insights and diverse synthetic applications. By classifying Fe(III)–L bond homolysis pathways, it highlights iron's potential as a sustainable alternative to precious metals for radical‐
Amrita Chaudhuri, Luca Mareen Denkler, Qing Zhuo, Anup Mandal, Ala Bunescu   +4 more
wiley   +1 more source

Secular Evolution of the Seismic Structure of Continental Crust, Archean to Present

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 10, October 2025.
Abstract We summarize the seismic and density structure of continental crust as a function of crustal age and evaluate the secular changes in these physical properties. We subdivide the continental crust into six age provinces, from Archean to Mesozoic‐Cenozoic, and calculate the surface area, mean crustal thickness, volume, mass, and seismic velocity ...
Walter D. Mooney, Pablo Barrera‐Lopez, María Gabriela Suárez   +2 more
wiley   +1 more source

Extracting pulse signals in measurement while drilling using optimum denoising methods based on the ensemble empirical mode decomposition

Petroleum Exploration and Development, 2012
To extract original pulse signals in measurement while drilling (MWD), different low-pass filtering methods were designed based on intrinsic mode functions through the ensemble empirical mode decomposition (EEMD).
Yi ZHENG, Xiaofeng SUN, Jian CHEN, Jun YUE   +3 more
doaj   +1 more source

DATA ACQUISITION IN RUNNING TRIPLE COMBO, A COMBINATION OF MEASUREMENT WHILE DRILLING (MWD) AND LOGGING WHILE DRILLING (LWD) WITH NUCLEAR LOGGING TOOL, ASSESSED BY SAFETY ASPECTS [PDF]

, 2011
Drilling and exploration in oil and gas jobs require accurate yet fast data on formation being drilled. This type of activity utilizes services providing real time logs with triple combo combining MWD (Measurement While Drilling) and LWD (Logging While
Lilis Susanti, Setianingsih
core  

Effects of liming on soil physical and chemical properties in Europe and North America: A review

Agrosystems, Geosciences &Environment, Volume 8, Issue 3, September 2025.
Abstract Soil acidity is one of the major constraints limiting crop production worldwide. About 50% of the global arable land is acidic. Liming remains an effective strategy for soil acidity amelioration and improvement of soil fertility. The objective of this review was to summarize information on liming effects on soil physical and chemical ...
Priscillar Wenyika, Rebecca Oiza Enesi, Linda Yuya Gorim, Miles Dyck   +3 more
wiley   +1 more source

Key technologies and development trends of borehole trajectory control in China’s coal mining areas

Meitan kexue jishu
China boasts abundant coal reserves, yet complex geological conditions and significant variations in coal seam occurrence pose challenges. As mining difficulty and safety risks increase, directional drilling technology has become increasingly critical in
Dongdong YANG, Youzhen ZHANG, Quanxin LI, Long CHEN, Gang CHEN   +4 more
doaj   +1 more source

Safety of the fungal biomass from Fusarium species strain flavolapis as a novel food pursuant to Article 10 of Regulation (EU) 2015/2283

EFSA Journal, Volume 23, Issue 9, September 2025.
Abstract Following a request from the European Commission, the EFSA Panel on Nutrition, Novel Foods and Food Allergens (NDA) was asked to deliver an opinion on the safety of the fungal biomass from Fusarium species strain flavolapis as a novel food (NF) pursuant to Regulation (EU) 2015/2283. The NF as the frozen form of the Fusarium sp. str. flavolapis
EFSA Panel on Nutrition, Novel Foods and Food Allergens (NDA), Dominique Turck, Torsten Bohn, Montaña Cámara, Jacqueline Castenmiller, Stefaan De Henauw, Ángeles Jos, Alexandre Maciuk, Inge Mangelsdorf, Harry J. McArdle, Breige Mcnulty, Peter Moldeus, Androniki Naska, Kristina Pentieva, Alfonso Siani, Frank Thies, Margarita Aguilera‐Gómez, Francesco Cubadda, Thomas Frenzel, Marina Heinonen, Helle Katrine Knutsen, Monika Neuhäuser‐Berthold, Morten Poulsen, Miguel Prieto Maradona, Josef Rudolf Schlatter, Henk van Loveren, Océane Albert, Rossi Annamaria, Hanna Schmierer, Ruth Roldán‐Torres, Gabriela Precup, Karen Ildico Hirsch‐Ernst   +32 more
wiley   +1 more source

All-attitude Gyro While Drilling Technology

Shiyou jixie, 2016
The all-attitude gyro while drilling technology,which eliminates the limit of the traditional MWD/Gyro While Drilling (hereinafter referred to as GWD),could effectively reduce the wellbore trajectory control uncertainty and reduce drilling operation risk,
Guo Xianmin, Cheng Guanqi, Cai Ximao, Yang Li   +3 more
doaj