Results 161 to 170 of about 464 (176)

A New Design of Unipole Source For Azimuth Acoustic Logging While Drilling

2019 13th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA), 2019
A new model of unipole source with U shape was designed for azimuthal acoustic logging while drilling. The transmitter was simulated numerically by finite elements method. The model was established and multi-mode couplings were analyzed by eigenfrequency calculations.
Qian WEI, Bin LIU, Cheng-xuan CHE, Jian-sheng CONG, Xiu-ming WANG   +4 more
exaly   +2 more sources

Fit-For-Purpose Acoustic Cement Evaluation Using Logging While Drilling in Deepwater

SPE/IADC Drilling Conference and Exhibition, 2015
Abstract Cement evaluation is a critical part of a cementing operation. Recent industry events and the continuous tightening of regulations for cement placement have elevated the importance of cement evaluation to heights greater than ever.
George Allen Fuller, Nadish Gupta, Matthew Blyth, Alfredo Aparicio   +3 more
openaire   +1 more source

On perfectly matched layer schemes in finite difference simulations of acoustic Logging‐While‐Drilling

SEG Technical Program Expanded Abstracts 2011, 2011
In the wave propagation simulation by finite difference time domain (FDTD), the perfectly matched layer (PML) is often applied to eliminate the reflection artifacts due to the truncation of the finite computational domain. In the acoustic Logging-While-Drilling (LWD) FDTD simulation, due to high impedance contrast between the drill collar and fluid in ...
Hua Wang, Xuefeng Shang, Xinding Fang, Guo Tao   +3 more
openaire   +1 more source

Numerical Simulation of Acoustic Field Ahead of Drill Bit in Formation Generated by Multipole Source During Logging While Drilling

IEEE Geoscience and Remote Sensing Letters
Chuang Hei, Wei Hu
exaly   +2 more sources

Collar Mode Wave Attenuation in Characteristics Acoustic Logging While Drilling and Isolator Design

Chinese Journal of Geophysics, 2011
AbstractThe acoustic logging while drilling (LWD) technology has developed rapidly in recent years. A key technology of this method is the design of an acoustic isolator to suppress acoustic propagation along the drill pipe, such that the acoustic signals from formation can be effectively measured under the LWD conditions.
openaire   +1 more source

Characteristics of the collar wave in acoustic logging while drilling (LWD)

SEG Technical Program Expanded Abstracts 2016, 2016
Wei Guan, Yufeng Yang, Hengshan Hu
openaire   +1 more source

An analysis for unipole acoustic logging while drilling wavefields with varying eccentered collar positions

Journal of Geophysics and Engineering, 2022
Xin Fu, Yang Gou
exaly  

Numerical simulation of acoustic reflection logging while drilling based on a cylindrical phased array acoustic receiver station

Journal of Petroleum Science and Engineering, 2019
Shubo Yang, Wenxiao Qiao, Xiaohua Che
exaly  

Numerical simulation of acoustic fields in formation generated by linear phased array acoustic transmitters during logging while drilling

Journal of Petroleum Science and Engineering, 2019
Shubo Yang, Wenxiao Qiao, Xiaohua Che
exaly  

Dual-Band Transmitter Transducer for Acoustic Logging While Drilling

IEEE Transactions on Instrumentation and Measurement
Yang Gou, Xin Fu, Cong Li
openaire   +1 more source