FLOAT SHOE, FLOAT COLLAR & CEMENTING PLUG

E-MAIL: irislea@sj-drilling.com;irislea@163.com

FLOAT SHOE & FLOAT COLLAR

SHUANGJIA Float shoe: when landing the casing, the drill fluid has no resistance to float shoes. The pressure of circulating mud make the valve head down a displacement, the disc of valve rod’s end will fall off automatically; after stop pumping, the valve press the valve seat upwards under the action of spring, the float valve becomes one-way valve. So that can pump the drilling fluid and cement slurry into it from up to down, but the fluid in the casing or outside casing annulus can’t be return to prevent from back flow.

SHUANGJIA Float Collar: the using method is the same as float shoes except the lower end is pin. It is connected with casing. The usage of float collar is to make the casing landing easily by reducing the loading. When landing the casing, make sure to prevent from the drill fluid flow into the casing. After cementing, the float collar can prevent the cement slurry retuning to the casing. 

TOP PLUG&BOTTOM PLUG

SHUANGJIA Cementing Plug: when the drilling fluid make the bottom plug move into the end, raised plum flower petal of the bottom plug’s lower end engaging with the hollow plum flower petal of float collar’s upper end. At the same time, the pressure rise, when reach the definite pressure, the burst disk in the bottom plug crush, the passageway open, and the pump pressure descent, at this time can cementing. After cementing, pumping into the top plug to clean cement slurry on the inner wall, the raised plum flower petal of the top plug engaging with the hollow plum flower petal of the bottom plug.

HEILONGJIANG NORTH SHUANGJIA DRILLING TOOLS CO., LTD.

Iris lea

Sales Manager

International Marketing Dept.

Add: No.56, Xingye Road, Yangming District，Mudanjiang City, Heilongjiang P.R, China 
E-mail:irislea@163.com；irislea@sj-drilling.com
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