Bottom hole pressure adjusting device for adjusting performance parameters of drilling fluid based on self-feedback

• Main Authors: ZHANG JIANBO, SUN BAOJIANG, WANG ZHIYUAN, ZHAO XINXIN, WANG XUERUI, SUN XIAOHUI, PANG YUHANG, YIN BANGTANG
• Format: Patent
• Language: Chinese; English
• Published: 29.03.2024
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; PHYSICS; TESTING

The invention relates to the technical field of oil and gas drilling, in particular to a bottom hole pressure adjusting device for adjusting drilling fluid performance parameters based on self-feedback. According to the technical scheme, the device comprises a simulation shaft unit and a computer processing system, and further comprises a simulation formation gas cut unit and a liquid phase circulation system, the simulation formation gas cut unit comprises an air compressor and a gas adjusting valve, the air compressor is connected to a three-way ball valve through a pipeline and the gas adjusting valve, the three-way ball valve is further connected to a gas-liquid two-phase flow inlet through a pipeline and a balance flow meter, and the gas-liquid two-phase flow inlet is connected to the computer processing system. The liquid phase circulation system comprises a throttle valve, a liquid-solid mixer, a weighting agent storage tank, a weight reducing agent storage tank, a tackifying agent storage tank, a simu