Abstract: The invention relates to a slim sonic logging tool with multiple modules for borehole resonance mode and pitch-catch measurement, comprising a cylindrical housing, a monopole transmitter, a pair of cross-dipole transmitters and a ring of receivers disposed between the monopole transmitter and the pair of cross-dipole transmitters within the cylindrical housing, the ring of receivers, being axially around a circumference of the first cylindrical housing.

Abstract: Methods and systems herein may be configured to utilize a downhole tool comprising: a transmitter configured to transmit an acoustic signal into at least part of a conduit string, wherein the transmitter is a first downhole element. In addition, receiver configured to measure an incoming signal from at least part of the conduit string, wherein the receiver is the first downhole element or a second downhole element. Further, disposing a downhole tool into a wellbore, wherein the downhole tool and transmitting an acoustic signal into at least part of a conduit string with the transmitter; and receiving the incoming signal from at least part of a conduit string with the receiver.

Abstract: Described herein are systems and techniques for improving the accuracy of determinations made using sensed data. Sensors used to collect acoustic data may collect unwanted noises when collecting data useful for a given purpose. Since unwanted noises may reduce the signal to noise ratio (SNR) of a sensing system, these unwanted noises can reduce the reliability of determinations made by the sensing system. Sensors of the present disclosure may include a chamber that may be filled with gas or be configured to resist pressures that exist in wellbore. Differences in acoustic transmission coefficients and shapes used to build the sensor may attenuate noise that propagates from certain directions. Sensing devices of the present disclosure may be used to attenuate noise from one direction while passing and sensing sounds that propagate from another direction.

Abstract: The invention relates to a slim sonic logging tool with multiple modules for borehole resonance mode and pitch-catch measurement, comprising a cylindrical housing, a monopole transmitter, a pair of cross-dipole transmitters and a ring of receivers disposed between the monopole transmitter and the pair of cross-dipole transmitters within the cylindrical housing, the ring of receivers, being axially around a circumference of the first cylindrical housing.

Abstract: Aspects of the subject technology relate to systems and methods for providing a TTCE dense acoustic array slim tool. An example through tubing cement evaluation (TTCE) tool comprising: a housing including a longitudinal axis; a transmitter being positioned within the housing, the transmitter being configured to operate in sonic and ultrasonic frequencies and being angled with respect to the longitudinal axis; a plurality of receivers being positioned within the housing, each of the plurality of receivers being isolated from the transmitter; one or more processors; and at least one computer-readable storage medium having stored therein instructions which, when executed by the one or more processors, cause the TTCE tool to: receive at least one of sonic and ultrasonic data from the plurality of receivers; and determine tubing or cement angular information based on the at least one of the sonic and ultrasonic data received from the plurality of receivers.