Sound producing device for measurement of downhole pressure of moving liquid surface and wireless transmission

• Main Authors: SU FENG, MA XIANPING, REN GUISHAN, MI LIFEI
• Format: Patent
• Language: Chinese; English
• Published: 26.03.2019
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The embodiment of the invention relates to a sound producing device for measurement of downhole pressure of a moving liquid surface and wireless transmission and belongs to the technical field of oilfield logging. Specifically, the sound producing device includes a body with a first inner cavity and a power source device for power supply, wherein a pressure sensor, a signal processing unit electrically connected to the pressure sensor and a longitudinal wave transducer electrically connected to the signal processing unit are arranged in the first inner cavity. The sound producing device measures a pressure signal through the pressure sensor, the pressure signal is converted into a sound signal by the signal processing unit, then sound waves are converted into longitudinal waves by a longitudinal wave transducer, the downhole pressure is transmitted to a ground receiving device wirelessly, and thus parameter information such as the moving liquid surface is calculated by the ground receiving device. The sound p