Carbon dioxide geological sequestration method based on mixed fluid self-detaching

Carbon dioxide geological sequestration method based on mixed fluid self-detaching

  • CN 101,190,743 B
  • Filed: 11/30/2007
  • Issued: 11/06/2013
  • Est. Priority Date: 11/30/2007
  • Status: Active Grant
First Claim
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1. the carbon dioxide geologic sequestration method based on the fluid-mixing self-separation, is characterized in that comprising the following steps:

  • 1. form Injection Well (10) and drainage well (20) in selected geological storage place, run through cap rock (41) always and enter geological storage layer (43);

    2. will contain CO by the high pressure injection device 2fluid-mixing continuously by Injection Well (10), inject geological storage layer (43);

    In fluid-mixing, gas concentration lwevel is between 60%~

    90%;

    3. after Injection Well (10) injects certain hour, discharge the fluid that moves to drainage well (20) by drainage well (20), control the pressure of drainage well (20) well head in certain scope simultaneously;

    4. continue to carry out the injection of fluid-mixing and the release of drainage well (20), until CO in the fluid that drainage well (20) is discharged 2till concentration is greater than economic concentration value, stop the whole process of sealing up for safekeeping;

    Described geological storage place is deep bittern layer, seals place up for safekeeping and at least comprises an Injection Well (10) and a drainage well (20).

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