Filling sliding sleeve tool assembly, out-of-pipe high-choked-flow segmented completion pipe string and segmented sand prevention method

• Main Authors: ZHOU YANGQI, JI SHUANGLING, CHEN DAZHAO, LUO LIPING, CONG ZHIXIN, SHI LEI, ZHANG JIANJUN, LYU YIWEN, CHEN LEI, YU XIAOXI, LYU MIN, MA LILI, ZHANG SHUO
• Format: Patent
• Language: Chinese; English
• Published: 28.06.2024
• 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 an infinite filling sliding sleeve tool assembly which comprises a filling sliding sleeve tool and a filling service tool, and the filling service tool is arranged in the filling sliding sleeve tool in a penetrating mode and can horizontally move and slide in the filling sliding sleeve tool in the axial direction. The filling sliding sleeve tool comprises a sliding sleeve working barrel and a sliding sleeve pipe. The filling service tool comprises a filling pipe, a lower guide rod and an elastic component. When the filling service tool slides in the filling sliding sleeve tool in the first direction, the filling sliding sleeve tool is opened, and when the filling service tool slides in the filling sliding sleeve tool in the second direction opposite to the first direction, the filling sliding sleeve tool is closed. The invention further discloses an out-of-pipe high-flow-resistance segmented well completion pipe string and a method for conducting segmented sand prevention through the o