Results 61 to 70 of about 16,459 (288)

Test and Evaluation of Double-flap Check Valve for Coiled Tubing Drag Fracturing

Shiyou jixie, 2018
To prevent the sand in the annular from entering the coiled tubing during the process of coiled tubing drag fracturing, which results in jet nozzle sand plugging and energy leakage owing to accidental damage and crack of coiled tubing, the double flap ...
Gao Sen, Yang Hongbin, Liu Leilei
doaj  

Pipe inspection and repair system [PDF]

, 2004
A multi-module pipe inspection and repair device. The device includes a base module, a camera module, a sensor module, an MFL module, a brush module, a patch set/test module, and a marker module. Each of the modules may be interconnected to construct one
Boehmke, Scott, Chemel, Brian, Crowley, William, Mutschler, Edward, Schempf, Hagen   +4 more
core   +1 more source

Countercurrent chromatography in analytical chemistry (IUPAC technical report) [PDF]

, 2009
© 2009 IUPACCountercurrent chromatography (CCC) is a generic term covering all forms of liquid-liquid chromatography that use a support-free liquid stationary phase held in place by a simple centrifugal or complex centrifugal force field. Biphasic liquid
Abbey, Abe, Abe, Abe, Akiba, Akiba, Akiba, Alain Berthod, Bauer, Bauer, Berthod, Berthod, Berthod, Berthod, Berthod, Berthod, Billardello, Boris Spivakov, Chen, Chen, Chen, Chen, Chmutova, Chmutova, Chmutova, Conway, Conway, Conway, Countercurrent Chromatography, Dekker, Fedotov, Fitz, Friesen, Fujita, Garcia Dominguez, Hashimoto, Hashimoto, Ian A. Sutherland, Ikai, Ito, Ito, Ito, Ito, Ito, Jin, Jin, Jin, Kawamura, Kawamura, Kidwell, Kitazume, Kitazume, Kitazume, Kitazume, Kitazume, Kong, Lee, Lee, Lee, Lee, Liu, Ma, Ma, Mandava, Mandava, Marston, Marston, Marston, Maryutina, Maryutina, Maryutina, Maryutina, Maryutina, Matsuda, Menet, Muralidharan, Nakamura, Nakamura, Oleg Shpigun, Pauli, Pukhovskaya, Ruiz, Ruiz, Ruth, Schaufelberger, Schaufelberger, Schreiber, Shang, Spivakov, Spivakov, Spivakov, Stark, Sutherland, Tanaka, Tatyana Maryutina, Thurman, Tian, Usuda, Usuda, Wang, Wang, Watkins, Winterhalter, Wood, Wu, Yanagida, Yang, Yang, Yang, Yoshida, Yu, Zhang, Zhang   +112 more
core   +2 more sources

Smart Closed‐Loop Systems in Personalized Healthcare: Advances and Outlook

Advanced Materials Technologies, EarlyView.
A smart closed‐loop e‐textile integrates multimodal sensing, onboard processing, wireless communication, and wearable power to enable real‐time physiological/biochemical monitoring and feedback‐controlled therapy. ABSTRACT Smart textiles represent a revolutionary frontier in healthcare, seamlessly blending fabric and advanced technologies to create ...
Safoora Khosravi, Sang Won Lee, Mohammad Abrar Uddin, Sina Hassanpoor, Neha Suvindran, Katherine Le, Harun Arkaz, Harishkumar Narayana, Saeid Soltanian, Danial Khorsandi, Negar Hosseinzadeh Kouchehbaghi, Taeil Kim, Yangzhi Zhu   +12 more
wiley   +1 more source

Distribution of Gripper Lift Force during Chain Transmitting in Coiled Tubing Injector Head

Shiyou jixie, 2018
In the process of coiled tubing operation, the coiled tubing trips in and out by gripper block driven by the injector head chain. The equalibrium of the lifting forces of the gripper block is of great significance for safe operation and prevention of ...
Zhou Zhihong, Yu Li
doaj  

Development and Application of Coiled Tubing Flushing Fluid Recycling Treatment Unit

Shiyou jixie, 2021
Existing descaling and well-flushing trucks are mainly applied for conventional descaling and well flushing operations, which are not applicable for coiled tubing operation.
Hu Zhiqiang, Lu Mingchun, Wu Yuanping, Yang Xiaofeng, Liu Kaiwen, Pu Xiaoli, Wang Zhidong   +6 more
doaj  

A model of calculating the circulating pressure loss in coiled tubing ultra-short radius radial drilling

Petroleum Exploration and Development, 2012
By analyzing the relationship between measured values of pressure loss in a high-pressure hose and calculated values of metal tubing pressure loss formula under the same condition, a calculation formula of pressure loss in a high-pressure hose is revised
Dongjun MA, Gensheng LI, Zhongwei HUANG, Jilei NIU, Cheng HOU, Mingjuan LIU, Jingbin LI   +6 more
doaj   +1 more source

Hydrogel‐Based Functional Materials: Classifications, Properties, and Applications

Advanced Materials Technologies, EarlyView.
Conductive hydrogels have emerged as promising materials for smart wearable devices due to their outstanding flexibility, multifunctionality, and biocompatibility. This review systematically summarizes recent progress in their design strategies, focusing on monomer systems and conductive components, and highlights key multifunctional properties such as
Zeyu Zhang, Zao Cheng, Patrizio Raffa
wiley   +1 more source

Dynamic Mechanical Behavior of Coiled Tubing under Wave Injection Hydraulic Fracturing

Shiyou jixie, 2019
To understand the dynamic mechanical behavior of coiled tubing in wave injection fracturing operation, based on the theory of fluid mechanics and elastic mechanics, the dynamic load and stress model of coiled tubing are established to analyze the ...
Tong Shaokai, Gao Deli
doaj  

Study on helical post-buckling of motional coiled tubing in horizontal wells

Journal of Petroleum Exploration and Production Technology
Coiled tubing is widely used in oil and gas operations. However, the long coiled tubing may undergo sinusoidal or helical buckling deformations, and even lock-up, leading to property damage and serious accidents.
Zhuang Li, Liangyu Chen, Fei Yuan, Lei Zhao   +3 more
doaj   +1 more source