PUNCH AND INJECT TOOL FOR DOWNHOLE CASING AND METHOD FOR USE THEREOF

• Main Authors: VAN MOORSEL SAM GERARD, CORNELISSEN IRIS, CORNELISSEN ERIK KERST, OLIEUX ROBBE IBN
• Format: Patent
• Language: Chinese; English
• Published: 17.12.2021
• 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

A downhole tool, which includes a tool housing having a longitudinal axis, is equipped with a sting for punching a hole in a casing wall and injecting a sealant though said hole. The tube has a fluid channel to establish fluid communication from within the tool housing to an exterior of the tool housing through the fluid channel. A press device acts on the sting to force the sting in a radially outward direction from the tool housing. A check valve is arranged in the fluid channel, which allows fluid communication in a direction from within the tool housing to an exterior of the tool housing and which blocks fluid flow in an opposite direction. In use, the sting can perforate a casing wall and the sealant can be injected into an annular space around the casing. 一种井下工具，其包括具有纵向轴线的工具外壳，其包括用于在套管壁中冲孔并通过所述孔注入密封剂的刺针。该管具有流体通道以通过流体通道形成从工具外壳内部到工具外壳外部的流体连通。压力装置作用在刺针上以迫使刺针沿径向向外从工具外壳移出。止回阀布置在流体通道中，其允许沿从工具外壳内部到工具外壳外部的方向的流体连通并且阻止沿相反方向的流体流动。在使用中，刺针可以穿过套管壁，并且可以将密封剂注入套管周围的环形空间中。