Sliding sleeve type packer for non-metal oil pipe

• Main Authors: ZENG WENGUANG, CHEN MIAO, HU GUOLIANG, ZHANG JIANGJIANG, LI FANG, GUO YUJIE, ZHAO HAIYANG, XIAO WENWEN, PAN YANGQIU, LIU BIN, GAO QIUYING, TAN HUI, LIU QINGSHAN
• Format: Patent
• Language: Chinese; English
• Published: 16.08.2022
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; METALLURGY; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The invention provides a sliding sleeve type packer for a non-metal oil pipe. The sliding sleeve type packer comprises an outer cylinder and a sliding sleeve, the central pipe is concentrically arranged in the outer cylinder and comprises a first pipe body and a second pipe body connected to the lower end of the first pipe body; the ball seat is arranged between the axial direction of the first pipe body and the axial direction of the second pipe body, and the ball seat is used for being matched with a ball sealer to carry out pressure building; the first rubber sleeve, the second rubber sleeve and the third rubber sleeve are arranged on the central pipe in a sleeving mode at intervals in the axial direction and used for expansion sealing, and the first rubber sleeve, the second rubber sleeve and the third rubber sleeve are each of a multi-layer rubber sleeve structure; wherein the inner diameter of the upper end part of the ball seat is configured to be gradually reduced inwards from the end part in the axia