Multi-layer filling sand prevention and layered injection and production integrated tubular column

• Main Authors: ZHANG LIANG, ZHANG SHAOPENG, ZHANG BIN, ZHANG JIJIANG, ZUO KAI, SUN XIAOFENG, CHEN SHENGHONG, BAO CHENYI, WANG MINGJIE, MA YINGWEN, ZHANG BINQI
• Format: Patent
• Language: Chinese; English
• Published: 03.12.2021
• 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 utility model provides a multi-layer filling sand prevention and layered injection and production integrated tubular column. An internal tubular column is located in an external tubular column; the top isolation assembly, the bypass flow passing screen pipe assembly, the isolation packer assembly, the bypass flow passing screen pipe assembly and the bottom isolation assembly are sequentially connected from top to bottom. The head end of the feeding tool is connected with a drill rod or an oil pipe, the tail end of the feeding tool is connected with the head end of the washing pipe, the tail end of the washing pipe is connected with the head end of the inserting center pipe, and the inserting center pipe can be inserted into the head end of the filling tool. The internal pipe column of the integrated pipe column is only provided with one layer of washing pipe, the drift diameter is large, the friction resistance is low, and the operation requirements of large-displacement fracturing filling and layered cir