supported by the National Natural Science Foundation of China(Nos.11574347,11374322,11134011,11734017,and 91630309);PetroChina Innovation Foundation(No.2016D-5007-0304)
In this paper, we theoretically and numerically study a combined monopole–dipole measurement mode to show its capability to overcome the issues encountered in conventional single-well imaging, i.e., the low signal-to...
Project supported by the National Natural Science Foundation of China(Grant Nos.40974067,41474098,and 11134011);the State Key Laboratory of Acoustics,China(Grant No.SKLA201608)
Water-saturated porous media often exhibit a seismoelectric effect due to the existence of an electrical double layer and a relative flow of pore fluid. Here we consider the seismoelectric waves in an open borehole su...
supported by the National Natural Science Foundation of China (Grant Nos. 41474098, 11134011);by State Key Laboratory of Acoustics (Grant No. SKLA201608)
The relationship between the maximum shear stress in a substrate solid and the elastic wave reflection coefficient from the interface between the substrate solid and an overlying solid half-space is investigated. Both...
supported by the Research and Development of Key Instruments and Technologies for Deep Resources Prospecting(No.ZDYZ2012-1-07);the National Natural Science Foundation of China(Nos.41204099,11134011,and 11274341)
Ultrasonic leaky Lamb waves are sensitive to defects and debonding in multilayer media. In this study, we use the finite-difference method to simulate the response of flexural waves in the presence of defects owing to...
supported by the National Natural Science Foundation of China(Nos.11204380,11374371,61102102,and11134011);National Science and Technology Major Project(No.2011ZX05020-009);China National Petroleum Corporation(Nos.2014B-4011,2014D-4105,and 2014A-3912);PetroChina Innovation Foundation(No.2014D-5006-0307)
We developed a novel cement evaluation logging tool,named the azimuthally acoustic bond tool(AABT),which uses a phased-arc array transmitter with azimuthal detection capability.We combined numerical simulations and ...
supported by the National Natural Science Foundation of China (Grant Nos.11204380,11374371,61102102,11134011);National Science and Technology Major Project (Grant No.2011ZX05020-009);China National Petroleum Corporation (Grant Nos.2014B-4011,2014D-4105,2014A3912);Petro China Innovation Foundation (2014D-5006-0307);China Scholarship Council (No.201306445018)
Better well logging techniques for geologic investigations are urgently needed to identify and evaluate complex reservoirs.We describe a new type of 3D transmitter station with corresponding circuits and bodies.They c...