WELL LOCATION DETERMINATION DEVICE WITH FLUID SUPPLY CONTROL ELEMENT Russian patent published in 2009 - IPC E21B47/09 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to well devices that can be used for determining the location of sleeves and/or other elements in the well shaft and that transfer to the surface the signal of such location, or when in inverted position, they can be used for applying the specified load to the column bottom layout. The device consists of one or more clamps which can be engaged with the sleeve cavity or the restricting adapter inside the well. Clamps are made with the possibility of protruding from the sleeve offset in opposite directions and bear against the mandrel. Clamps can be drawn into the mandrel slots in order to pass the obstacle on the way to the well. When clamps are moved upwards to the sleeve that can just been passed, they are engaged, and the upward force applied to the mandrel moves the fluid through the throttling point, which creates the time interval which is enough in order to receive on the surface the significant signal of excess draft force. The device can be inverted and used for maintaining the constant load on the column bottom equipment during underwater sinking by using heave compensator.

EFFECT: decreasing jerk effect.

26 cl, 8 dwg