Hydraulic control layered control switch device and use method thereof

• Main Authors: MAO XIAONAN, LI YUBAO, ZHU YINGHUI, YAN LILI, LIU JIANXIN, LIU YUGUO, WEI WEI
• Format: Patent
• Language: Chinese; English
• Published: 30.04.2024
• 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 a hydraulic control layered control switch device and a using method thereof. A layer changing pressing hole is formed in an upper connector of the switch device, a center pipe is provided with a layer changing track, a balance hole and a layer changing hole are formed in a lower pipe body, sealing rings are arranged on the two sides of the layer changing hole, and streaming channels are formed in a streaming cylinder and a lower connector; the outer circle of the upper connector is sequentially in threaded connection with a sliding ring limiting cylinder, an outer cylinder and a connecting cylinder from top to bottom, a limiting ring and a sliding ring are installed in an annular space between the upper connector and the sliding ring limiting cylinder, and a sliding pin is installed in the sliding ring. The center pipe and the limiting ring can move up and down along the outer wall of the lower portion of the upper connector and a sliding pin in the sliding ring, so that the first lay