Method and device for measuring dissolution rate of solid paraffin inhibitor

Abstract

The embodiment of the invention provides a method and device for measuring the dissolution rate of a solid paraffin inhibitor. The method comprises a step of preparing condensate gas by adopting single degassing gas and condensate oil according to standards and putting prepared condensate gas into a condensate gas intermediate container, a step of uniformly mixing the solid paraffin inhibitor anda propping agent and then filling a rock core model with a mixture and weighing the filled rock core model to obtain a first rock core model weight, a step of setting experimental pressure, enabling the condensate gas in the condensate gas intermediate container to flow through the rock core model according to a preset flow rate and contact time under the action of a pressure difference, weighingthe rock core model again to obtain a second rock core model weight, and a step of calculating to obtain a dissolution rate of the solid paraffin inhibitor according to the first rock core model weight, the second rock core model weight, a total condensate gas volume flowing through the rock core model and the contact time of the condensate gas and the solid paraffin inhibitor. The effect evaluation of the solid paraffin inhibitor is achieved.

Description

technical field [0001] The invention relates to the field of oil and gas exploitation, in particular to a method and a device for measuring the dissolution rate of a solid wax inhibitor. Background technique [0002] During oil and gas production, wellbore wax deposition will adversely affect the normal production of oil and gas wells, and severe wax deposition will lead to complex situations such as stuck pipe strings and blocked surface pipelines. With the continuous development of condensate gas wells, the formation temperature and pressure of oil and gas wells will inevitably drop, and the phenomenon of wax condensation of deep high-temperature and high-pressure condensate gas will become more and more common. [0003] At present, solid paraffin inhibitors are used in oil wells as wax removal and anti-wax measures, and there are few relevant studies on the application of solid paraffin inhibitors for condensate gas wells, and the determination of the relationship between...

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Problems solved by technology

[0005] The present invention provides a method and device for measuring the dissolution rate of a solid wax inhibitor, which is used to solve the problem of measuring the dissolution rate of a solid wax inhibitor and condensate gas under high temperature and high pressure conditions and a device for solving the problem in the prior art. Issues that make the evaluation of solid wax inhibitors inaccurate, affecting oil and gas production

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