Results 81 to 90 of about 10,595 (295)

Damage Mechanism of Oil-Based Drilling Fluid Flow in Seepage Channels for Fractured Tight Sandstone Gas Reservoirs

Geofluids, 2019
Oil-based drilling fluids (OBDFs) have a strong wellbore stabilization effect, but little attention has been paid to the formation damage caused by oil-based drilling fluids based on traditional knowledge, which is a problem that must be solved prior to ...
Peng Xu, Mingbiao Xu
doaj   +1 more source

Toward personalized healthcare: Advances in two‐dimensional nanomaterial‐based flexible electrochemical sensors for physiological monitoring

BMEMat, EarlyView.
This review provides an overview of the properties, composites and application of two‐dimensional (2D) nanomaterials for wearable electrochemical biosensors. Also, the challenges and future prospects of utilizing 2D nanomaterials in wearable electrochemical biosensor applications are discussed.
Kou Zhang, Lu Han, He‐Qing Cai, Xin‐Yu Xue, Yi‐Fei Song, Wu‐Lin Xin, Ying‐Ze Wang, Peng Liu, Juan Liu   +8 more
wiley   +1 more source

Application of Radial Basis Function (RBF) neural networks to estimate oil field drilling fluid density at elevated pressures and temperatures

, 2019
International audienceThe petroleum industry today has no choice, but to explore new and ever more deep and challenging pay zones as the most of the shallow oil and gas producing pay zones are severely depleted during the years of production.
Afshin Tatar, Abdol Samad Rahmati, Rahmati, Abdol Samad, Tatar, Afshin   +3 more
core   +1 more source

Engineering Biochar‐Derived Functional Materials for High‐Performance Supercapacitors: Design Principles, Mechanisms, and Scalable Strategies

Carbon Energy, EarlyView.
ABSTRACT Biochar has emerged as a useful and adaptable source of carbon for supercapacitor electrodes. Its value comes from the way biomass chemistry, thermal conversion, and activation conditions shape the resulting pore network, surface groups, and degree of carbon ordering.
Soumen Mandal, Avinash C. Mendhe, Mayna Roy, Neha S. Barse, Taejoon Park, Han‐Seung Lee, Haigun Lee   +6 more
wiley   +1 more source

Feasibility study of palm oil esters as based fluid in drilling operation [PDF]

, 2001
Drilling oil and gas wells requires special drilling fluid, which are usually called mud. For normal drilling operation, the based fluids such as seawater or treated water are usually used for drilling job.
Khor, Siak Foo, Ismail, Abdul Razak
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Ratiometric pH‐Responsive and Biomimetic Microparticles for Quantitative Monitoring of Phagosomal Acidification

Chemistry – A European Journal, EarlyView.
A series of hydrosoluble BODIPY pH probes allows building biomimetic pH sensors based on micrometric oil‐in‐water droplets. The ratiometric fluorescence output offers quantitative information on the evolution of pH during phagosome maturation. ABSTRACT We present a modular biomimetic fluorescent sensing platform designed to precisely interrogate the ...
Sophie Michelis, Héloïse Uhl, Florence Niedergang, Jacques Fattaccioli, Blaise Dumat, Jean‐Maurice Mallet   +5 more
wiley   +1 more source

Investigation on the propagation characteristics of pressure wave during managed pressure drilling

Frontiers in Energy Research
The small difference between formation pressure and fracture pressure in offshore oil and gas reservoirs poses a huge challenge to drilling. Managed pressure drilling (MPD) technology, as a drilling technique that can accurately control bottomhole ...
Yanan Hou, Zhong Li, Zhiming Yin, Baitao Fan, Yingwen Ma, Xiangqian Yang, Deqiang Tian, Wenjun Cai, Meipeng Ren, Xingquan Zhang   +9 more
doaj   +1 more source

Plugging technology applied for total loss in shale gas wells of Lower Yangtze Region:Taking Well-WY-1HF as an example

Youqicang pingjia yu kaifa, 2021
At present,the leakage of shale gas drilling is quite common in China,and there are few plugging methods suitable for oil-based drilling fluid.The total loss of drilling fluid is still a difficult problem for technicians in the industry.Taking the field ...
LI Dayong, XIAO Chao, WANG Shengjian, ZHAO Xiaoxiang, ZHU Disi, LIU Haoya   +5 more
doaj  

Evaluation of Using Fly Ash as a Weighing Material for Oil-Based Drilling Fluid. [PDF]

ACS Omega, 2023
Basfar S, Al-Hakami M, Elkatatny S, Ahmed A.   +3 more
europepmc   +1 more source

Risk-based Reliability Assessment of Subsea Control module for Offshore Oil and Gas production [PDF]

, 2014
Offshore oil and gas exploitation is principally conducted using dry or wet tree systems, otherwise called the subsea Xmas tree system. Due to the shift to deeper waters, subsea production system (SPS) has come to be a preferred technology with ...
Umofia, Anietie Nnana
core