High-temperature identifying agent sealing examination device

Abstract

The invention relates to the field of heavy oil cyclic steam stimulation exploitation, in particular to a high-temperature identifying agent sealing examination device used for examining sealing effect of a plugging pipe column of a thermal production well. The high-temperature identifying agent sealing examination device comprises a central pipe and a switch mechanism, a storage cavity is arranged in the periphery of the central pipe, an identifying agent outflow passage is arranged on the cavity body wall of the storage cavity, and the identifying agent outflow passage is arranged at the upper end and / or the lower end of a cavity body of the storage cavity; the switch mechanism is a temperature control valve which comprises a valve seat, a valve core and a locking device, a temperature control deforming member is fixedly connected at one end of the valve core, the valve core driven by unfolding of the temperature control deforming member after being heated has a first closing position, a second closing position and a third closing position on a set forward moving stroke sequentially, and the valve core driven by contracting of the temperature control deforming member after being cooled moves from the second closing position to an opening position on a set backward moving stroke. The temperature control valve is in a closed state when a packer sets and before an oil well is opened for gushing.

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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