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Application Status and Development Prospect of Coil Tubing Based on Logging Technology

Cejing jishu
With the further development of unconventional oil and gas, the application of coiled tubing in logging has gradually increased, but it still faces challenges such as overlap between logging operations and downhole operations, unclear application ...
ZHOU Yang, NIU Buneng, WANG Zhuo, ZHANG Zhijiang, DU Xu, JIANG Long, LIU Ping   +6 more
doaj   +1 more source

Development and Application of Ultra High Strength Cable forDeep Ten Thousand Meter Wells

Cejing jishu
In response to the challenges of high tension and ultra long signal transmission faced by cable logging in deep 10 000-meter wells, this article adopts a combination of theoretical design, data analysis, and experimental testing.
MA Jianghu, ZHANG Bingjun, ZHANG Haijun, YANG Qingjian, SHUAI Shichen, LUO Shengqiang, YOU Zhanhua, SUN Wei, JIANG Songhan   +8 more
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Inverting log blowups in log geometry

Tunisian Journal of Mathematics
40 pages.
openaire   +2 more sources

Log Abelian Varieties over a Log Point

Documenta Mathematica, 2017
We study (weak) log abelian varieties with constant degeneration in the log flat topology. If the base is a log point, we further study the endomorphism algebras of log abelian varieties. In particular, we prove the dual short exact sequence for isogenies, Poincaré complete reducibility theorem for log abelian varieties, and the semi-simplicity of the ...
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Application of Dipole Acoustic Logging Imaging Technology in Fine Description of Reservoir

Cejing jishu
In order to identify the faults, natural fractures along the horizontal well and its distribution between wells in shale oil and gas reservoir, the rich information from the dipole acoustic logging is utilized.
LI Fanhua, SUN Xuekai, ZHANG Tao, YANG Daxiang, SHI Qiang, KAN Hongge, YANG Shihe, GOU Yanhong   +7 more
doaj   +1 more source

Advances in Formation Evaluation and Well Logging Technology: Review of the SPWLA 65th Annual Logging Symposium

Cejing jishu
The Annual Logging Symposium of Society of Petrophysicists and Well Log Analysts (SPWLA) is a key event for the exchange of new theories, methods, technologies, and products in well logging. Based on 145 academic papers presented at the 65th SPWLA Annual
YIN Chengfang, SHEN Zhenzhen, FENG Linwei, DU Xuewei, ZHANG Caitong   +4 more
doaj   +1 more source

Oriented Perforation Techniques with Avoidance of Optical Fibers in Horizontal Wells and Its Application

Cejing jishu
When directional perforating operations are carried out in horizontal wells, the direction is usually achieved by installing a tilted weight in the perforating gun.
HE Hongmin, SUN Zhizhong, HU Yong, JIAO Yan, CHEN Bo, LIU Yachun, NONG Shaozhong   +6 more
doaj   +1 more source

Research on multi-scale digital core construction of carbonate rock with fractures and caves characteristics: a case study of Dengying formation carbonate rocks in Sichuan Basin

Frontiers in Earth Science
Carbonate reservoirs characterized by fractures and caves exhibit a complex spatial distribution and significant heterogeneity. The establishment of precise and reliable three-dimensional geological models is imperative to elucidate the influence ...
Geli Li, Jianbin Zhao, Yuejiao Liu, Zhanshan Xiao, Shitao Cui, Bo Wei, Chenjun Zhang, Yakun Mao, Yang Xia, Lei Xu, Jianmeng Sun, Zuzhi Hu   +11 more
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Method for Improving the Evaluation Quality of the Second Cementing Interface Using Acoustic Time Difference Curve

Cejing jishu
Acoustic variable density logging uses the formation wave amplitude received by the 5 ft probe to evaluate the cement bonding quality at the second cementing interface, which is one of the few logging methods that can effectively evaluate the second ...
QIU Enbo, ZHANG Boxin, DAI Yuexiang, DENG Zhaoyuan, CHEN Jing, YANG Xi, TIAN Shiyong, Tonggulike, QI Fei, CHEN Yu, ZHANG Xu, HUANG Haitao   +11 more
doaj   +1 more source

Investigation of Stress Variation in Push-the-Bit Rotary Steering Bearings Under Weight on Bit and Push Forces

Cejing jishu
As the key component of the push-the-bit rotary steerable system, the accuracy and reliability of the bearing system directly affect the control accuracy and drilling efficiency of the drilling tool on the borehole trajectory.
SHEN Bin, YANG Hao, XUE Zhejing, LI Wei, CHENG Feng, LU Lu, WU Jie   +6 more
doaj   +1 more source