SURFACE CONTROLLED REVERSIBLE COILED TUBING VALVE ASSEMBLY

    公开(公告)号:US20190017333A1

    公开(公告)日:2019-01-17

    申请号:US16133371

    申请日:2018-09-17

    Abstract: A valve assembly for reversibly governing fluid flow through coiled tubing equipment. Valves of the assembly may be directed by a telemetric line running from an oilfield surface. In this manner, valve adjustment and/or reversibility need not require removal of the assembly from the well in order to attain manual accessibility. Similarly, operation of the valves is not reliant on any particular flow rate or other application limiting means. As such, multiple fluid treatments at a variety of different downhole locations may take place with a reduced number of trips into the well and without compromise to flow rate parameters of the treatments.

    Methods Using Viscoelastic Surfactant Based Abrasive Fluids for Perforation and Cleanout
    4.
    发明申请
    Methods Using Viscoelastic Surfactant Based Abrasive Fluids for Perforation and Cleanout 审中-公开
    使用基于粘弹性表面活性剂的研磨剂用于穿孔和清洗的方法

    公开(公告)号:US20160341017A1

    公开(公告)日:2016-11-24

    申请号:US14717588

    申请日:2015-05-20

    Abstract: A method includes positioning at least one fluid nozzle disposed upon a distal end of a fluid conduit in a cased borehole penetrating a subterranean formation at a target zone of the subterranean formation. An abrasive laden fluid is then continuously pumped through the fluid conduit and through the at least one fluid nozzle at a pressure adequate to form at least one slot through the cased borehole. The abrasive fluid contains an aqueous medium, an abrasive, an optional acid, and a viscoelastic surfactant. While continuously pumping the abrasive fluid through the fluid conduit, the wellbore may be cleaned by returning debris and material generated in the operation to the surface with the fluid. In some instances, a portion of the forming a slot through the cased borehole is conducted simultaneous with the cleanout of the wellbore.

    Abstract translation: 一种方法包括将设置在流体导管的远端上的至少一个流体喷嘴定位在穿过地下地层的目标区域的地下地层的套管钻孔中。 然后将磨料填充的流体连续地泵送通过流体导管并通过至少一个流体喷嘴,压力足以形成穿过套管钻孔的至少一个槽。 研磨液含有水性介质,研磨剂,任选的酸和粘弹性表面活性剂。 在持续地将磨料流体泵送通过流体导管时,可以通过将流体中产生的碎屑和材料返回到表面来清洁井筒。 在一些情况下,形成穿过套管钻孔的槽的一部分与井眼的清洁同时进行。

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