全通径永久式锚定封隔器的研制与应用

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中图分类号：TE931.2 文献标志码：B doi：10.3969/j.issn.1001-3482.2025.05.011

Abstract：The existing anchors for casing sidetracking are unable to provide production channels for the main wellbore and prevent reservoir contamination caused by rock debris during branch wel sidetracking. To address this issue，a full port permanent anchor packer was designed.The anchor packer had reliable anchoring capacity and had alarge internal diameter to preserve production access to the main wellbore， without requiring recovery. The rubber cylinder sealing mechanism had good annular pressure and sealing functions，which could effectively prevent rock debris from falling into the main wellbore and avoid reservoir contamination.Laboratory tests and field applications show that the compressive and tensile capacity of the tool is up to 1 OOO kN，and the torsion resistance is up to 50kN⋅m . After the rubber cylinder is set， the pressure-bearing capacity can be 21MPa .This tool has reliable anchoring capacity and annular pressure-bearing capacity during casing sidetracking in branch wels and has broad market promotion and field application prospects.

Keywords：casing sidetracking; full port; permanent; anchoring; sealing

随着油田开发不断推进，海上油田面临着老井增多、废弃井数量上升的问题，而海上油田可开发的井槽数量又受到平台区域面积的限制[1-9]。（剩余6070字）