Heavy oil well shaft viscosity reduction test device

Abstract

The invention belongs to the technical field of petroleum industry, and specifically relates to a heavy oil well shaft viscosity reduction test device. The device comprises a simulation shaft unit, an oil and water injection unit, a viscosity reducer feeding unit, an oil reservoir pressure simulating unit, an output liquid processing and recovering unit, a viscosity online testing unit, and a control unit. The oil and water injection unit and the viscosity reducer feeding unit are respectively connected to the bottom of the simulation shaft unit and the bottom of the lateral wall of the simulation shaft unit through a high pressure pipeline. The oil reservoir pressure simulating unit and the output liquid processing and recovering unit are connected to the top of the simulation shaft unit through a high pressure pipeline. The viscosity online testing unit is connected to the lateral wall of the simulation shaft unit. The device has the characteristics of high automation degree and high simulation degree. At the same time, the device can simulate the viscosity reduction rate and microscopic viscosity reduction mechanism of a heavy oil well shaft chemical agent under different conditions and provides reliable theoretical reference for determining onsite technological parameters of a heavy oil well viscosity reducer. The device can be widely used in heavy oil well chemical viscosity reduction onsite tests.

Description

technical field [0001] The invention belongs to the technical field of petroleum development, and in particular relates to a heavy oil well shaft viscosity reducing test device, which is used for process optimization of heavy oil well shaft viscosity reducing agents. Background technique [0002] Heavy oil is an important part of petroleum. It is not only a power fuel, but also an important raw material for the chemical industry and construction industry. The world's heavy oil and bitumen resources are extremely rich, with geological reserves of about 6.18 trillion barrels. Heavy oil has poor fluidity and high viscosity. The key issue in production is to reduce viscosity and improve its fluidity. Wellbore viscosity reduction technology refers to keeping the fluid in the wellbore low-viscosity through thermal, chemical, dilution and other measures, so as to improve the flow conditions of the wellbore fluid, alleviate the incompatibility of pumping equipment, and improve the ...

AI Technical Summary

Problems solved by technology

At present, the on-site dosing process of heavy oil viscosity reducer (dosing amount and dosing cycle of viscosity reducer) is mainly determined according to the working experience of scientific researchers. Since this method lacks theoretical basis, the accuracy and reliability are not strong.

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