Method for lowering tubular pump by applying inserting tube type bridge plug

• Main Authors: YAN XIAOMIN, TIAN SHENGMIN, FAN ZHENGANG, WANG LIN, ZHANG SHILIN, LIU ZHENGDE, LIU YUZHOU, WU YINGXIN, ZHAO YONGJIE, PING ENSHUN
• Format: Patent
• Language: Chinese; English
• Published: 19.06.2020
• 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 a method for lowering a tubular pump by applying an inserting tube type bridge plug. The method is used for exploration and development of shale oil, tight oil, low-permeability and ultra-low-permeability oil and gas reservoirs; in the under-pressure state, a coiled tubing, a setting tool and the inserting tube type bridge plug are lowered, an oil layer is temporarily closed after the bridge plug is set, and the coiled tubing is pulled out; an inserting pipe tool is lowered, an inner sliding sleeve of the inserting pipe type bridge plug is opened, and after it is verified that an oil sleeve annulus communicates, the later-period pump lowering well completion technology is conducted; according to the process method, well flushing and killing by high-density kill fluid are avoided, the oil layer is not polluted by the kill fluid, the time for preparing the high-density kill fluid is saved, and the operation cost of the high-density kill fluid is reduced; and wellflushing and killing tim