Device and method for simulating thickened oil viscosity reduction during wellbore lifting

A simulation device and wellbore simulation technology, which is applied to earth-moving drilling, wellbore/well components, and production fluids, etc. It can solve the problem that the viscosity reduction effect varies greatly and cannot well show the dynamic effect of viscosity reducer and heavy oil. process and other issues to achieve the effect of improving accuracy

Inactive Publication Date: 2013-01-02
CHINA UNIV OF PETROLEUM (BEIJING) +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the viscosity-reducing effect of the viscosity-reducing agent measured by the rotational viscometer or rheometer is the viscosity-reducing effect measured after the viscosity-reducing agent is fully mixed with the heavy oil, which is an ideal state. Viscosity effect,

Method used

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  • Device and method for simulating thickened oil viscosity reduction during wellbore lifting
  • Device and method for simulating thickened oil viscosity reduction during wellbore lifting
  • Device and method for simulating thickened oil viscosity reduction during wellbore lifting

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Embodiment approach 1

[0037] Such as figure 1 As shown, the present invention provides a heavy oil wellbore lift-viscosity simulation device, which includes a wellbore simulation system 1 , a dosing system 2 , a liquid supply system 3 and a monitoring and control system 4 . Wherein: the wellbore simulation system 1 has a simulated wellbore 11, the simulated wellbore 11 is provided with a simulated lifting string 12, and a pressure difference is connected between the liquid inlet 120 and the liquid outlet 121 of the simulated lifting string 12 The sensor 13; the dosing system 2 is connected with the wellbore simulation system 1, the dosing system 2 has a plurality of dosing piston containers 21, and the dosing piston containers 21 are respectively connected with a dosing pipe 22, the The dosing pipe 22 extends into the bottom of the simulated wellbore 11; the liquid supply system 3 is connected with the wellbore simulation system 1, and the liquid supply system 3 has a liquid supply piston container...

Embodiment approach 2

[0068]The present invention also provides a heavy oil wellbore lifting viscosity reduction simulation method, characterized in that the heavy oil wellbore lifting viscosity reduction simulation method adopts the heavy oil wellbore lifting viscosity reduction simulation device described in Embodiment 1, and the heavy oil The structure, working principle and beneficial effects of the wellbore lifting and lowering viscosity simulation device are the same as those in Embodiment 1, and will not be repeated here. The heavy oil wellbore lift-viscosity simulation method includes the following steps:

[0069] a) The viscosity reducer is output through the dosing system 2, and the thick oil is output through the liquid supply system 3;

[0070] b) The viscosity reducer and the heavy oil are jointly injected into the bottom of the simulated wellbore 11 of the wellbore simulation system 1, and mixed at the bottom of the simulated wellbore 11;

[0071] c) The mixed liquid generated after ...

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Abstract

The invention discloses a device and a method for simulating thickened oil viscosity reduction during wellbore lifting. The device comprises a wellbore simulating system, a chemical feeding system, a liquor supply system and a monitoring and control system. The wellbore simulating system comprises a simulating wellbore, a simulating lift string is arranged in the simulating wellbore, and a differential pressure transducer is connected between a liquor inlet and a liquor outlet of the simulating lift string. The chemical feeding system is connected with the wellbore simulating system and comprises a plurality of chemical feeding piston containers, and the chemical feeding piston containers are connected with a chemical feeding pipe extending into the bottom of the simulating wellbore. The liquor supply system is connected with the wellbore simulating system and is provided with a liquor supply piston container connected with a constant-temperature liquor supply water bath, and the constant-temperature liquor supply water bath is communicated with the bottom of the simulating wellbore through a delivery pipe. The monitoring and control system is connected with the liquor outlet of the simulating lift string and provided with a plurality of constant-temperature monitoring water baths in connection. By the method and the device, dynamic mixing viscosity reduction of viscosity reducers and thickened oil during wellbore lifting can be simulated, and changes of dynamic viscosity of mixed liquor during wellbore lifting simulation are monitored in real time.

Description

technical field [0001] The invention relates to a heavy oil viscosity reduction simulation device and method, in particular to a heavy oil wellbore lifting viscosity reduction simulation device and method used in the technical field of oilfield oil and gas recovery engineering. Background technique [0002] With the advancement of technology, more and more heavy oil reservoirs are put into production. At present, the development of heavy oil reservoirs mainly adopts technologies such as steam huff and puff, steam flooding, and heavy oil cold recovery to improve the seepage of heavy oil in the formation. . In the process of heavy oil lifting, as the temperature decreases, the viscosity of heavy oil increases continuously, and the viscosity-reducing lifting agent becomes the main technology of heavy oil wellbore lifting. [0003] In the prior art, the device for evaluating the viscosity reducing effect of the viscosity reducing agent is mainly a rotational viscometer or a rhe...

Claims

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Application Information

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IPC IPC(8): E21B43/22E21B47/00E21B47/06
Inventor 赵仁保柯文奇岳湘安吴亚红
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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