Crude oil emulsion stability evaluating instrument

Abstract

The invention discloses a crude oil emulsion stability evaluating instrument which comprises an emulsion preparing device, an emulsion standing thermostat and an observing device, wherein the emulsion preparing device is provided with an emulsifying chamber; a liquid inlet is arranged at one end of the emulsifying chamber; a liquid outlet is arranged at the other end of the emulsifying chamber; the emulsifying chamber is internally provided with a porous medium plate which can move axially; the emulsion standing thermostat is provided with an inner layer tank body and an outer layer tank body; the outer layer tank body is sleeved outside the inner layer tank body; a test-tube rack is arranged inside the inner layer tank body; a plurality of test tubes are placed on the test-tube rack; the plurality of test tubes are respectively used for receiving emulsion liquid prepared from the liquid outlet of the emulsifying chamber; transparent observing windows are arranged on the inner layer tank body and the outer layer tank body which are correspondingly provided with test-tube rack; the observing device is provided with a camera mechanism and a walking control mechanism; wherein the walking control mechanism is connected with the camera mechanism; and the camera mechanism faces to the transparent observing window horizontally. With the adoption of the crude oil emulsion stability evaluating instrument, the crude oil emulsified liquid prepared by using the emulsion preparing device can be observed, and the dehydration rate can be tested stability; and the instrument is accurate in measurement, small in repeated experimental error and high in evaluation efficiency.

Description

technical field [0001] The invention relates to a stability evaluator, in particular to a crude oil emulsification stability evaluator for analyzing and measuring the emulsification stability of crude oil in the field of petroleum exploitation. Background technique [0002] In order to meet the world's increasing demand for oil and enhance oil recovery, people have researched and developed a variety of oil recovery technologies, including water flooding, steam flooding, chemical flooding and other methods. These methods eventually make crude oil be recovered in the form of emulsion ; In addition, as crude oil exploitation enters the middle and late stages, the content of colloids and asphaltene in crude oil increases, making the crude oil emulsion more stable. The heating of medium alkali, surfactant and polymer changes the state of conventional crude oil production fluid, aggravates the emulsification phenomenon, and makes the demulsification process more complicated. Acco...

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Problems solved by technology

[0004] In the prior art, when evaluating the stability of crude oil emulsion, it is basically determined by manual judgment, and its subjective factors are very prominent, and all operations are basically manual operations, and human factors have a great influence

Due to the large error caused by human factors, the data results of the experimental evaluation are very different when operated by different people or different batches of experimental operations by the same person, which will lead to the evaluation of crude oil emulsion. The experiment of emulsification stability is inaccurate and has no reference, and the evaluation process is time-consuming, laborious, and has poor objectivity

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