这种安全接头主要由弹力爪、锁套、滑套和剪钉组成。

This joint is mainly comprised of elastic jaw, sliding sleeve and shear pin.

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为了克服剪钉式和反扣式两种安全接头的不足，研制出一种滑套式井下安全接头。

To overcome the shortcomings of the shear pin type joint and left-hand thread type joint, a sliding sleeve subsurface safety joint is developed.

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针对倒扣式常规安全接头在井下退开难度较大，剪钉式安全接头完井作业易中途断脱的问题，研制了一种液压控制型安全接头。

To solve problems of difficultly releasing and easily breaking off of the conventional safety joint while operating in downhole, a new hydraulic controlling joint is developed.

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