Micro-cylindrical resistivity focusing system and control method thereof

• Main Authors: LI FANGONG, MA GUANGBIN, XIA JIGEN, LEE JUN-IL, LI ZHIQIANG
• Format: Patent
• Language: Chinese; English
• Published: 05.05.2023
• 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 invention discloses a micro-cylindrical resistivity focusing system and a control method thereof. The system comprises a DSP microprocessor, two paths of DA converters, two paths of power amplifiers, a micro-cylindrical focusing polar plate, a focusing controller, a multiplexer and an AD converter. The micro-cylindrical resistivity focusing system disclosed by the invention is a soft and hard dual-drive focusing circuit system based on DSP (Digital Signal Processor) control, realizes simultaneous focusing in longitudinal and transverse directions, solves the problem of inaccurate measurement of the resistivity of a flushing zone caused by current divergence, meets the requirements for measuring the resistivity of the flushing zone with complex lithology, a thin layer and a thin interbed, and improves the measurement accuracy of the resistivity of the flushing zone. And permeability stratum evaluation is facilitated. 本发明公开了一种微柱形电阻率聚焦系统及其控制方法：该系统包括DSP微处理器、两路DA转换器、两路功率放大器、微柱形聚焦极板、聚焦控制器、多路复用器和AD转换器。本发明所公开的微柱形