High temperature test agent sealer

Abstract

The invention relates to the field of heavy oil steam huff and puff production, in particular to a high-temperature test agent seal tester used for testing the sealing effect of a plugging pipe string in a thermal recovery well. The high-temperature authentication seal tester includes a central tube, a storage cavity is arranged on the periphery of the central tube, and an identification agent outflow channel is provided on the cavity wall of the storage cavity. On the upper end and / or lower end of the storage cavity, the switch mechanism is a temperature-controlled valve. The temperature-controlled valve includes a valve seat and a valve core. One end of the valve core is fixedly connected with a temperature-controlled deformation part. The part is driven to open by heat and has the first closed position, the open position, and the second closed position in sequence on the set forward movement stroke. The second closed position moves to the open position, and the temperature control valve also includes a locking device. The temperature control valve in the present invention is in a closed state when the packer is set and before the oil well is blown out.

Description

technical field [0001] The invention relates to the field of heavy oil steam huff and puff production, in particular to a high-temperature test agent seal tester used for testing the sealing effect of a plugging pipe string in a thermal recovery well. Background technique [0002] The Chinese patent with the application number 201110316646.7 discloses a seal tester, which is a device for checking the sealing condition of the packer by using the seal test method. The device is put into the corresponding blockage space, and the seal inspection agent in the storage chamber flows into the corresponding blockage space through the switch mechanism, and then the liquid in the pipe string at the corresponding position is extracted and judged according to the concentration of the seal inspection agent in the liquid. It is convenient to judge whether the plugging of the corresponding packer is effective. However, this seal tester is not suitable for the seal test of plugging strings ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a seal verification agent packer in which the switch mechanism is closed during the packer setting process, so as to solve the problem in the prior art that the switch mechanism is opened during the packer setting process to make the seal verification agent The problem of long residence time of the sealing test agent in the water blocking closed area due to release

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