Results 61 to 70 of about 24,031,090 (295)
Zuanjingye yu wanjingyeThe proved undeveloped shale oil reserves in block Qibei of Dagang oilfield are still very high and their burial depths can be 4,500 m or deeper. This oil and gas enrichment area is located in the Shahejie reservoir which has high content of clays as ...
Hong MA +6 more
doaj +1 more source
STUDY ON CASTOR OIL AS OIL BASED FLUID IN DRILLING OPERATION [PDF]
, 2012 Drilling fluid is a critical component in the drilling process, where it provides the gel to efficiently lift cuttings, maintain stable wellbore and produce sufficient hydrostatic pressure that could prevent the influx of formation fluids into the ...
Preveen Kumar A/L Rajan, Preveen
core
Advanced Science, EarlyView.Neuronal activation leads to astrocytic transient volume changes, activating transient receptor potential ankyrin 1 (TRPA1) channels, leading to Ca2+ influx. Activation of TRPA1 causes the release of D‐serine through BEST1. Finally, the augmented extracellular levels of D‐serine boost neuronal activity by binding GluN1‐containing NMDARs, leading to CBV
Kayoung Han +11 more
wiley +1 more source
Iraqi Journal of Chemical and Petroleum EngineeringDifferential pipe sticking (DSP) is a main challenge when using water-based drilling fluids developed with bentonite clay. This study employed a Fann VG meter, a self-fabricated tester, and a stickance tester to examine the effect of oil on water ...
Karrar Talib Alhisnawy +2 more
doaj +1 more source
Effect of Additives on Rheological Properties and Fluid Loss of Oil Based Drilling Fluids
Annual Transactions of the Nordic Rheology SocietyOil-based drilling fluids are often used to drill geothermal or petroleum wells in hot locations. These fluids normally consist of dispersion of organophilic clays in water-in-oil emulsions. If loss of fluid to the formation is expected, fibres or other additives for fluid loss prevention are added.
Feneuil, Blandine Fleur Prudence +2 more
openaire +2 more sources
PRESSURE PREDICTION AND UNDERBALANCED DRILLING IN THE DEEPWATER NIGER DELTA [PDF]
, 2012 The mechanisms that cause overpressure can be broadly classified into two categories: loading and unloading. This study looks at eight wells from the deepwater Niger Delta; the wells were evaluated with three aims in mind. The first aim was to determine
GOODWYNE, OLAR,KAMAL
core
Retrospective Grid Cells in the Medial Entorhinal Cortex Encode Past Paths During Spatial Navigation
Advanced Science, EarlyView.Retrospective grid cells are identified in the medial entorhinal cortex, with spatial firing patterns that become most grid‐like when activity is projected onto recently traversed locations. Their coding loses spatial precision in darkness and is disrupted during assisted movement, indicating that entorhinal representations incorporate recent path ...
Ruojin Liu +10 more
wiley +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 +3 more sources
Research progress and development of deep and ultra-deep drilling fluid technology
Petroleum Exploration and DevelopmentThe research progress of deep and ultra-deep drilling fluid technology systematically reviewed, the key problems existing are analyzed, and the future development direction is proposed.
Jinsheng SUN +4 more
doaj +1 more source
Intrinsic Mechanical Parameters and their Characterization in Solid‐State Lithium Batteries
Advanced Energy Materials, Volume 15, Issue 11, March 18, 2025.This review focuses on the intrinsic mechanical parameters and their associated characterization in solid‐state batteries. The physical significance of mechanics parameters is introduced with exhaustive classifications by elastic, plastic deformations and fracture in bulk, adhesion, friction at interfaces, and mechanical fatigue in cells ...
Shuai Hao +5 more
wiley +1 more source