Sleeve floating coupling and well cementing method

Sleeve floating coupling and well cementing method

The invention discloses a sleeve floating coupling and a well cementing method. The sleeve floating coupling comprises a tubular body, a blind flange and a retainer ring, wherein a first connection end and a second connecting end are respectively formed at the two ends of the tubular body, and a cir...

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Hauptverfasser: TONG WENKE, ZHANG GENGJUAN, YE NENGCHUAN, YAN JIA, ZHOU FUXIAN, DUAN HUIZHU, LU GUOZHU, CAO XUEHONG, LI WEIPING
Format: Patent
Sprache:chi ; eng
Schlagworte:
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
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creator TONG WENKE
ZHANG GENGJUAN
YE NENGCHUAN
YAN JIA
ZHOU FUXIAN
DUAN HUIZHU
LU GUOZHU
CAO XUEHONG
LI WEIPING
description The invention discloses a sleeve floating coupling and a well cementing method. The sleeve floating coupling comprises a tubular body, a blind flange and a retainer ring, wherein a first connection end and a second connecting end are respectively formed at the two ends of the tubular body, and a circular step and a circular groove are formed on the inner wall of the tubular body; the retainer ring is located in the circular groove; and the blind flange is located between the circular step and the retainer ring, and the blind flange is a brittle board which is broken into fine and small particles when impacted by 15-35 MPa hydraulic force. The well cementing method is implemented by adopting the sleeve floating coupling to carry out well cementing operation. By using the sleeve floating coupling, the well cementing process is simple and reliable to operate, thus the well cementing operation time and operation cost are greatly reduced, and the economic benefits are high.
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The sleeve floating coupling comprises a tubular body, a blind flange and a retainer ring, wherein a first connection end and a second connecting end are respectively formed at the two ends of the tubular body, and a circular step and a circular groove are formed on the inner wall of the tubular body; the retainer ring is located in the circular groove; and the blind flange is located between the circular step and the retainer ring, and the blind flange is a brittle board which is broken into fine and small particles when impacted by 15-35 MPa hydraulic force. The well cementing method is implemented by adopting the sleeve floating coupling to carry out well cementing operation. 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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
title Sleeve floating coupling and well cementing method
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