A carbon dioxide fracturing sand mixing device for oil fields

By designing multiple sets of parallel mixing stirrers and infusion components, the problem of long mixing time and insufficient continuity of the carbon dioxide fracturing sand mixing device in the prior art is solved, and efficient and uniform fracturing fluid preparation and continuous sand pressing are achieved. Cracking improves the efficiency and control accuracy of the carbon dioxide fracturing sand mixing device in oil fields.

CN118949764BActive Publication Date: 2024-12-10EASTERN GANSU UNIVERSITY
View PDF 6 Cites 0 Cited by

Patent Information

Application Number
CN202411443752.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-10-16
Publication Date
2024-12-10
Estimated Expiration
2044-10-16

AI Technical Summary

Technical Problem

The existing carbon dioxide fracturing sand mixing device requires a long time to stir when mixing liquid carbon dioxide and proppant, and cannot achieve continuous sand fracturing, resulting in low sand fracturing efficiency, inaccurate sand concentration control, complex equipment control, and failure rate high.

Method used

Design a carbon dioxide fracturing sand mixing device for oil fields, adopting multiple sets of parallel mixing agitators, each set of stirrers is connected to the carbon dioxide storage tank and the proppant storage tank, and mixing liquid carbon dioxide and proppant through electric valves, and In the agitator, the infusion assembly and the stirring assembly are arranged, and uniform mixing and stirring are achieved using the spray unit and the stirring blade.

Benefits of technology

The sand mixing efficiency and uniformity of the fracturing fluid are improved, and the continuous preparation of fracturing fluid is achieved, which reduces the inaccurate sand concentration and equipment failure rate, and improves the efficiency and control accuracy of sand fracturing.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN118949764B_ABST
    Figure CN118949764B_ABST
Patent Text Reader

Abstract

The invention relates to the technical field of petroleum and natural gas development, and in particular to a carbon dioxide fracturing sand mixing device for oil fields, which is connected to a wellhead device and then introduced with prepared fracturing fluid, and comprises a carbon dioxide storage tank, a proppant storage tank, and a plurality of mixing agitators arranged in parallel, wherein the input end of each group of mixing agitators is respectively connected with the carbon dioxide storage tank, the additive storage tank and the proppant storage tank; the mixing agitator comprises a shell; an infusion component is arranged on the upper part of the shell, and a stirring component is arranged on the lower part; the infusion component is connected with the carbon dioxide storage tank or a liquid output pipeline through an inlet pipe, the shell is connected with the output end of the proppant storage tank through a plurality of input ports arranged on the upper end, and the passage between the input port and the proppant storage tank is connected with a solid output pipeline; the invention can adjust the injection rate of liquid carbon dioxide and the mixing ratio of liquid carbon dioxide and proppant, and can also continuously prepare fracturing fluid, thereby improving the efficiency of fracturing operation.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Fracturing construction device for oil and gas development

    CN112647920A

  • Visual carbon dioxide fracturing sand mixing device and method

    CN113967426A

  • Continuous closed sand mixing device for carbon dioxide fracturing

    CN116785990A

  • A rotatory sand formula area pressure sand mulling device that adds for oilfield fracturing

    CN207004503U

  • Method and apparatus for preparing homogeneous mixture continuously

    JP1999221453A