Wireless positioning method for coiled tubing downhole operation tool

The invention relates to a wireless positioning method for a coiled tubing downhole operation tool. The wireless positioning method comprises the following steps: S1, connecting a ground sensing system with a coiled tubing truck pump pressure sensor; s2, checking the battery and function condition o...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ZHENG GUANG, CHEN LONG, JIANG QIANG, XU BANGCAI, FENG DEHUA, YANG JIE
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention relates to a wireless positioning method for a coiled tubing downhole operation tool. The wireless positioning method comprises the following steps: S1, connecting a ground sensing system with a coiled tubing truck pump pressure sensor; s2, checking the battery and function condition of the positioner, and ensuring that the function of the positioner is normal before entering the well; s4, ground real-time monitoring is carried out, the lowering depth is observed to be compared with the generated pressure pulse, and whether the situation of missed recognition of the casing coupling exists or not when the positioner passes through the casing coupling in a lowering mode is checked; s5, after the positioner tool completes positioning, the displacement and the pump pressure of the pump are increased until a pin of a valve body on the lower portion of the positioner tool is cut off, the valve body on the lower portion is opened, meanwhile, a bypass is closed, the positioner is lifted and put down, th