Results 11 to 20 of about 135 (92)

Study on Prevention and Control of Confined Water Hazard in Deep Resource Exploitation: Scientific Basis of “GCD‐D” Design

Geofluids, Volume 2023, Issue 1, 2023., 2023
Deep mining of resources has destroyed the stress balance of original rock, formed water gushing channel, and caused the outburst of confined water, thus causing disaster. At present, “Ground Controlled Directional Bedding Branch Drilling (GCD‐D)” grouting has achieved remarkable results in controlling water disasters.
Yanbo Hu, Jiaze Xu, Qiqing Wang, Jingying Li, Qingguo Xu, Shuangfeng Guo, Jinpeng Zhang   +6 more
wiley   +1 more source

Errors in positioning of borehole measurements and how they influence seismic inversion

Geophysical Prospecting, Volume 70, Issue 8, Page 1338-1345, October 2022., 2022
Abstract Inversion of seismic data using information from horizontal wells is often hampered by cumulative well‐location errors. These errors can have a significant influence on the final subsurface model derived from the data. To achieve a proper data integration and arrive at correct uncertainty estimates, we formulate the problem in a fully ...
Iris Fernandes, Klaus Mosegaard
wiley   +1 more source

Direct Multi‐Modal Inversion of Geophysical Logs Using Deep Learning

Earth and Space Science, Volume 9, Issue 9, September 2022., 2022
Abstract Geosteering of wells requires fast interpretation of geophysical logs which is a non‐unique inverse problem. Current work presents a proof‐of‐concept approach to multi‐modal probabilistic inversion of logs using a single evaluation of an artificial deep neural network (DNN). A mixture density DNN (MDN) is trained using the ”multiple‐trajectory‐
Sergey Alyaev, Ahmed H. Elsheikh
wiley   +1 more source

Quantifying the lateral heterogeneity of distal submarine lobe deposits, Point Loma Formation, California: Implications for subsurface lateral facies prediction

The Depositional Record, Volume 8, Issue 2, Page 472-501, June 2022., 2022
Submarine fan deposits are volumetrically the largest sediment accumulations on Earth and host significant hydrocarbon reserves. Extensive research has documented the bed‐scale architecture of sandy, high net‐to‐gross (N:G), proximal and axial environments, which can have bed thicknesses of several metres; however, less well‐understood are thin‐bedded ...
Kaci B. Kus, Zane R. Jobe, Fabien Laugier, Wylie Walker, Morgan Sullivan   +4 more
wiley   +1 more source

Development Evaluation and Optimization of Deep Shale Gas Reservoir with Horizontal Wells Based on Production Data

Geofluids, Volume 2021, Issue 1, 2021., 2021
The implementation of horizontal wells is a key to economic development of the deep shale gas reservoir. In order to optimize the key parameters for drilling, stimulation, and the production system, the development effect of a horizontal well in deep shale gas formations was investigated from various aspects in this study. The drilling, fracturing, and
Wuguang Li, Hong Yue, Yongpeng Sun, Yu Guo, Tianpeng Wu, Nanqiao Zhang, Yue Chen, Xiaohu Dong   +7 more
wiley   +1 more source

Study on the azimuth sensitivity of azimuthal γ ray logging while drilling

He jishu, 2021
BackgroundThe response of azimuth gamma well logging in multiple sectors around the well cannot reflect the actual radioactive distribution of the formation.PurposeThis study aims to obtain the contribution factors of different sectors around the ...
YU Huawei, WANG Wending, ZHANG Li, XIAO Hongbing, YANG Quanjin, ZHANG Yuxin, YANG Zhengchun   +6 more
doaj   +1 more source

Application of new geosteering technology in thin reservoir [PDF]

E3S Web of Conferences, 2022
Because some oilfields in China belong to the thin bottom water reservoir model, the actual drilling process is technically difficult. In order to ensure the maximum drilling operation of the target layer and the basic development effect of the oilfield,
Yang Lidong
doaj   +1 more source

Real‐Time Intelligent Recognition Method for Horizontal Well Marker Bed

Mathematical Problems in Engineering, Volume 2020, Issue 1, 2020., 2020
The accurate identification of the horizontal well marker bed is to guarantee the soft landing of the well trajectory. With the intelligent development of the petroleum industry, it is feasible to apply computers to identify the marker bed automatically. In case‐based reasoning technology, the data of well logging while drilling (LWD) as characteristic
Xuning Wu, Qian Li, Hu Yin, Zaoyuan Li, Jianhua Jiang, Menghan Si, Yangyang Zhang, Raffaele Solimene   +7 more
wiley   +1 more source

An interactive sequential-decision benchmark from geosteering

Applied Computing and Geosciences, 2021
During drilling, to maximize future expected production of hydrocarbon resources, the experts commonly adjust the trajectory (geosteer) in response to new insights obtained through real-time measurements.
Sergey Alyaev, Sofija Ivanova, Andrew Holsaeter, Reidar Brumer Bratvold, Morten Bendiksen   +4 more
doaj   +1 more source

Logging-while-drilling formation dip interpretation based on long short-term memory

Petroleum Exploration and Development, 2021
Azimuth gamma logging while drilling (LWD) is one of the important technologies of geosteering but the information of real-time data transmission is limited and the interpretation is difficult.
Qifeng SUN, Na LI, Youxiang DUAN, Hongqiang LI, Haiquan TANG   +4 more
doaj   +1 more source