Dynamic optimization design method for measuring mud pressure wave signal period while drilling

• Main Authors: YANG FANGSHU, WEI CHUNMING, XU CHAOYANG, ZHANG MENG, WU DONGFENG, GAO TINGZHENG, WANG WEI, ZHANG SUOSHENG, ZHAO XIAOYONG, WANG YUHANG, CHENG JIN, ZHANG AIBING, GUO JINGSONG, HU XIUFENG
• Format: Patent
• Language: Chinese; English
• Published: 11.12.2020
• 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 relates to the technical field of measurement while drilling of petroleum and natural gas engineering, and discloses a dynamic optimization design method for measuring a mud pressure wave signal period while drilling. The method comprises the following steps of: calculating the change of attenuation of a mud pressure wave signal along with the period according to drilling engineeringconstruction parameters; measuring noise through a pressure sensor and analyzing a noise spectrum; calculating the signal-to-noise ratio of the attenuated signal to the measured noise based on a signal attenuation prediction result; and selecting a mud pressure wave signal period based on the signal-to-noise ratio and the noise spectrum according to the decoding accuracy and the required data transmission rate. According to the method, the mud pressure wave signal period measured while drilling can be adjusted according to the specific construction condition of a single well; and the method is simple, convenient and