Horizontal interval umbrella type rock debris fishing tool
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A technique for fishing tools and horizontal wells, which is applied in wellbore/well components, measurement, earthwork drilling and production, etc., and can solve problems such as poor results
Active Publication Date: 2020-04-14
SOUTHWEST PETROLEUM UNIV
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In the process of bottom hole cuttings salvage, small size cuttings can be discharged by high-pressure well flushing, but this method is less effective for large pieces of cuttings that have collapsed in the open hole completion well
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[0018] According to the drawings, the umbrella-type cuttings fishing tool mainly includes a special joint, a shell 1, a right-angle flange, a motor, a sleeve cup 1, a sleeve cup 2, a shell 2, a fishing inner cylinder, a shell 3, a pressure sensor, Circular plate, lead screw 1, arc rod, plate 1, plate 2, spring, micro motor, nut, connecting rod 1, connecting rod 2, lead screw 2, sealing head, coupling; said plate 1, plate 2 Connected by a hinge, there is a spring support plate 2 at the bottom of the plate 1; the arc rod is a 1 / 4 arc rod, which is connected with the salvage inner cylinder and the plate 1 through interference fit, and drives the plate 1 to protrude through the salvage inner cylinder. Then the spring supports the plate 2 to gather cuttings; the pressure sensors are two in total, radially symmetrically installed on the upper end of the casing 3, and a circular plate is installed on the two pressure sensors to measure whether the cuttings are full; the connecting rod...
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Abstract
The invention relates to a horizontal interval umbrella type rock debris fishing tool for the petroleum and natural gas industry. The fishing tool comprises a motor, a fishing inner cylinder, a pressure sensor, a lead screw I, a plate I, a plate II, a spring, a micro motor, a nut, a connecting rod I, a connecting rod II, a lead screw II and the like; the motor is powered on, the lead screw I is driven to rotate, the rotary motion of the lead screw I is converted into linear motion of the fishing inner barrel, the fishing inner barrel, the plate I and the plate II are driven to extend out, thespring supports the plate II, and rock debris is gathered; the micro-motor is powered on to rotate, a lead screw nut mechanism is used for converting the rotary motion into the linear motion, so thatthe connecting rod I and the connecting rod II are driven to open into an umbrella shape; and the motor rotates reversely, and the rock debris is fished, and the pressure sensor is used for measuringwhether the rock debris is filled or not. The fishing tool has the advantages that the rock debris in the front cannot be pushed away, multiple times of operation can be achieved, the rock debris canbe gathered, a barrel opening is well sealed during recovery, and falling of the rock debris is prevented.
Description
technical field [0001] The invention relates to an umbrella-type fishing tool used in the oil and gas industry to fish cuttings in a horizontal well section. Background technique [0002] Petroleum is the blood of industry, and its importance is self-evident. In order to ensure the normal operation and production of the oil field, improve the recovery rate, and pursue better economic benefits, it is necessary to ensure that the oil and water wells can work normally and efficiently. [0003] However, the downhole technical conditions of oil and water wells are complex and diverse. At the same time, various failures and downhole accidents are prone to occur during the completion process, especially downhole falling objects or wellhead collapse lead to cuttings falling, causing the oil well to fail to work. In severe cases, the oil well may be scrapped , and then cause huge losses to the production and economic benefits of the oil field. [0004] Therefore, timely handling of...
Claims
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Application Information
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