Electric direct reading test sealing checking tool

Abstract

The invention discloses an electric direct reading test sealing checking tool, which is designed for realizing the direct-reading type electric sealing checking of an underground packer of a separate injection well and improving the test efficiency and reliability. The electric direct reading test sealing checking tool consists of an upper joint, a magnetic positioning device (a coil assembly, magnetic steel and the like arranged in a sheath), an integrated controller (a power supply module connected with a control framework, a main control panel, motor, a magnetic positioning plate and the like), a motive power transmission mechanism (a motor connected with a lead screw, a position limiting slide block, a thrust slide block and the like), a positioning mechanism (a positioning claw connected with a middle joint), a pressure data collector (comprising a thrust slide block, a pressure sensor and the like) and a test sealing device (upper and lower rubber tubes connected with a sleeve, a mandrel and the like) through sequential connection. The electric direct reading test sealing checking tool has the advantages that the real-time observation sealing checking effect is realized in a ground direct reading mode, the sealing checking efficiency is high, the rubber tube packing and unpacking are controlled in an electric way, the sealing checking success rate is high, the magnetic positioning device is utilized for realizing the precise positioning, the positioning claw can open and withdraw at any time according to the instructions, and the goal of completing the test sealing checking in all layer positions through once well descending can be realized.

Description

technical field [0001] The invention relates to an electric direct-reading testing and sealing tool, which belongs to the technical field of testing water injection wells in oil fields. Background technique [0002] Fine layered water injection is the most economical and effective method to replenish formation energy, expand the swept volume of water injection, reduce interlayer difference and improve recovery during the development of multilayer reservoirs. Separated to achieve layered water injection. The effective setting of the packer plays a decisive role in layered water injection. Therefore, after the completion of the layered water injection string or before the deployment of the layered test, the packer seal must be checked to confirm the working status of the packer. [0003] At present, the eccentric dispensing process technology has the following problems: (1) It needs to be repeatedly lifted and released by steel wire to realize setting and unsealing, which has...

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Problems solved by technology

[0003] At present, the eccentric dispensing process technology has the following problems: (1) It needs to be repeatedly lifted and released by steel wire to realize setting and unsealing, which has a large workload and low efficiency. ; (2) The pressure gauge used is a storage type, and the ground playback data and analysis need to be completed after the whole test is completed, and the real-time performance is poor; (3) The rubber cup is compressed by the gravity of the weight bar and the instrument to realize the setting. The sealing reliability is poor, the test error is large, and the test effect is not ideal; (4) The test instrument string is long, which reduces the passing capacity in highly deviated wells and increases the difficulty of test fishing

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