Results 11 to 20 of about 186 (126)

A Formation Inversion Algorithm Based on Collaborative Fuzzy Gradient Neural Dynamics for Natural Gamma Logging While Drilling

CAAI Transactions on Intelligence Technology
A formation inversion algorithm with real‐time performance and accuracy is crucial for natural gamma logging while drilling (LWD). However, traditional inversion algorithms are often limited by high computational resource consumption and insufficient ...
Juntao Liu, Ruoxiao Liu, Wenxin Li, Zhenming Su, Long Jin   +4 more
doaj   +2 more sources

Universal apparatus module of radioactivity logging for the investigation of oil-and-gas reservoirs while drilling

Геофизический журнал, 2023
Logging-while-drilling (LWD) is the most advanced technology in geophysical well logging. It is widely used for determining the petrophysical and other parameters of oil-and-gas reservoirs in vertical, deviated, and horizontal boreholes.
V. Kulyk, M. Bondarenko
doaj   +1 more source

Mechanically oscillating sample under magnetic field gradients: MOS-NMR

Journal of Magnetic Resonance Open, 2022
Nuclear Magnetic Resonance (NMR) has been widely used in Petroleum Science and Engineering to study geological formations (porous media) in laboratories or under well-logging conditions.
Everton Lucas-Oliveira, Agide Gimenez Marassi, Arthur Gustavo Araújo-Ferreira, Edson Luiz Géa Vidoto, Aparecido Donizeti Fernandes de Amorim, Willian Andrighetto Trevizan, Tito José Bonagamba   +6 more
doaj   +1 more source

A novel artificial intelligence automatic detection framework to increase reliability of PLT gas bubble sensing

Journal of Petroleum Exploration and Production Technology, 2021
Production logging tools (PLTs) and formation testing, even in logging while drilling (LWD) conditions during underbalanced drilling, are key technologies for assessing the productivity potential of a gas well and therefore to maximize recovery.
Klemens Katterbauer, Alberto F. Marsala, Virginie Schoepf, Eric Donzier   +3 more
doaj   +1 more source

Surface Drilling Parameters and Drilling Optimization Techniques: Are They Useful Tools in Gas Hydrate Detection?

Energies, 2022
This paper examines the application of surface drilling parameters and drilling optimization techniques, such as mechanical specific energy (MSE) and equivalent strength (EST), in detecting hydrate gas-bearing sediments during drilling operations.
Adam Wspanialy, Moe Kyaw
doaj   +1 more source

Elastic-Wave Radiation, Scattering, and Reception of a Dipole Acoustic Logging-While-Drilling Source in Unconsolidated Formations

Frontiers in Earth Science, 2022
Single-well acoustic imaging in logging-while-drilling (LWD) has important application potential in evaluating cluster-well drilling safety as it can be applied to the real-time detection of an existing cased borehole from a new well during drilling ...
Zhen Li, Qiaomu Qi, Qiaomu Qi, Chuang Hei, Can Jiang, Xing-Jian Wang   +5 more
doaj   +1 more source

Control method and system design for power saving and power consumption reduction of gamma LWD probe tube

Meikuang Anquan, 2022
In view of the contradiction between the power supply time of the logging probe in hole of the gamma logging while drilling system in coal mine and the construction period of drilling operation, the energy-saving and power-saving control method and ...
TIAN Xiaochao, JIANG Bici
doaj   +1 more source

Detecting hydrodynamic barriers of reservoirs based on drilling of horizontal wells to refine geological models

Известия высших учебных заведений: Нефть и газ, 2023
During the geological modeling process, it can be problematic to substantiate predicted faults or barriers that are estimated from seismic data and require additional research.
Alena V. Ilmendeeva, Nikita V. Nosov
doaj   +1 more source

Design and Implementation of the Controllable-Source Neutron Porosity Logging While Drilling Tool

Cejing jishu, 2023
In order to avoid the construction risk caused by chemical sources in the radioactive logging of highly deviated wells, long horizontal wells and complex operating conditions, to obtain the formation data safely and efficiently, the controllable-source ...
CHEN Hui, LUO Qingfeng, AN Lyuxing, YANG Ting, LIU Wei, ZHANG Jie   +5 more
doaj   +1 more source

Current states of well-logging evaluation of deep-sea gas hydrate-bearing sediments by the international scientific ocean drilling (DSDP/ODP/IODP) programs

Natural Gas Industry B, 2021
Since deep-sea gas hydrate-bearing sediments were drilled for the first time in the Blake Ridge in 1970, gas hydrates have been discovered at 53 drill sites in the continental margins of global oceans with international scientific ocean drilling (DSDP ...
Guangfa Zhong, Di Zhang, Luanxiao Zhao
doaj   +1 more source