Centralizer for improving centering degree of long horizontal section sleeve

The utility model belongs to the technical field of well drilling, and particularly relates to a centralizer for improving the centering degree of a long horizontal section sleeve, which comprises a cylindrical hollow body, the upper end of the body is connected with an upper joint, and the lower en...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LIANG WEIWEI, YANG QUANZHI, LUO LIN
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The utility model belongs to the technical field of well drilling, and particularly relates to a centralizer for improving the centering degree of a long horizontal section sleeve, which comprises a cylindrical hollow body, the upper end of the body is connected with an upper joint, and the lower end is connected with a lower joint; the device is characterized in that push block grooves are uniformly formed in the inner side wall of the body, through holes penetrating through the body are formed in the push block grooves in the horizontal direction, push blocks are arranged in the push block grooves, supporting columns are arranged at the ends, close to the push block grooves, of the push blocks, and the supporting columns are inserted into the through holes; a push cylinder is further arranged in the body, a center runner is arranged in the center of the push cylinder, a conical end is arranged below the push cylinder, a conical surface is arranged above the push block, and the conical surface is matched wit