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Method for measuring viscosity reduction rate of thick oil viscosity reducer

A thick oil viscosity reducer and measurement method technology, applied in the direction of measuring devices, flow characteristics, instruments, etc., can solve the problems that are not suitable for widespread promotion and use, complex process flow, etc., achieve low cost, low technical requirements, The effect of the simple measurement process

Inactive Publication Date: 2011-06-15
武侯区巅峰机电科技研发中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defect that the current method for measuring the viscosity reduction rate of heavy oil viscosity reducer is complicated and not suitable for widespread popularization and use, and to provide a kind of thick oil that is not only simple in process flow, but also very practical. Determination method of viscosity reduction rate of oil viscosity reducer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The measurement process of this embodiment is as follows: take 70mL of heavy oil and place it in a beaker, and let it stand in a constant temperature water bath at 40°C for 1h; then measure the viscosity η0 of the heavy oil with an NDJ-4 type rotational viscometer; 0.5% viscosity reducer aqueous solution at constant temperature and heavy oil with a volume ratio of 3:4 are added to the heavy oil, and stirred with a glass rod until the emulsification is uniform; Measure the viscosity η of the emulsion; calculate the viscosity reduction rate of the viscosity reducer to heavy oil according to the formula (η0-η) / η0×100%.

Embodiment 2

[0020] The measurement process of this embodiment is as follows: take 75mL of heavy oil and place it in a beaker, and let it stand in a constant temperature water bath at 45°C for 1h; then measure the viscosity η0 of the heavy oil with an NDJ-4 type rotational viscometer; Add the viscosity reducer aqueous solution with a concentration of 0.8% at a constant temperature to the heavy oil at a volume ratio of 3:5, and stir it with a glass rod until the emulsification is uniform; Measure the viscosity η of the emulsion; calculate the viscosity reduction rate of the viscosity reducer to heavy oil according to the formula (η0-η) / η0×100%.

Embodiment 3

[0022] The measurement process of the present embodiment is as follows: get 80mL of heavy oil and place it in a beaker, and let it stand in a constant temperature water bath at 50°C for 1.5h; then use the NDJ-4 type rotational viscometer to measure the viscosity η0 of the heavy oil; Add the viscosity reducer aqueous solution with a concentration of 1.0% at constant temperature to the thick oil at a volume ratio of 3:6, and stir it with a glass rod until the emulsification is uniform; use a NDJ-4 rotary viscometer at 50 Rapidly measure the viscosity η of the emulsion; calculate the viscosity reduction rate of the viscosity reducer to heavy oil according to the formula (η0-η) / η0×100%.

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Abstract

The invention discloses a method for measuring the viscosity reduction rate of a thick oil viscosity reducer, which is characterized by mainly comprising the following steps of: (a) putting 70 to 100mL of thick oil into a beaker, and standing in a 40 to 60 DEG C constant-temperature water bath for 1 to 2 hours; (b) measuring the viscosity eta0 of the thick oil by using an NDJ-4 rotary viscosimeter; (c) adding 0.5 to 1.5 percent aqueous solution of viscosity reducer with the constant temperature of 50 DEG C into the thick oil in a volume ratio of 3:4-3:8, and stirring by using a glass rod until emulsification is uniform; (d) quickly measuring the viscosity eta of emulsion at the temperature of between 40 and 60 DEG C by using the NDJ-4 rotary viscosimeter; and (e) calculating the viscosity reduction rate of the thick oil viscosity reducer according to a formula (eta0-eta) / eta0*100 percent. The measuring process is simple, and the measuring technical requirement is low, so measuring cost is low, and measuring accuracy can reach 92 percent.

Description

technical field [0001] The invention relates to a measuring method, in particular to a measuring method for the viscosity reducing rate of a heavy oil viscosity reducing agent. Background technique [0002] At present, the methods used in the process of heavy oil viscosity reduction at home and abroad are mainly divided into two categories: chemical viscosity reduction and physical viscosity reduction. Chemical viscosity reduction includes heavy oil upgrading by means of visbreaking, delayed coking, and catalytic cracking. Viscosity reducer and wax crystal improver, surfactant, heavy oil adding alkali, hydrothermal cracking and microbial degradation, etc. The physical viscosity reduction mainly includes methods such as heating viscosity reduction, adding thin oil and physical field viscosity reduction. Blending thin oil to reduce viscosity refers to mixing light oil with heavy oil to reduce viscosity. The smaller the relative density and viscosity of the blended light oil,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N11/14
Inventor 黄友华
Owner 武侯区巅峰机电科技研发中心
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