Title:
CARBON DIOXIDE FLUIDITY CONTROL DEVICE AND METHOD
Document Type and Number:
WIPO Patent Application WO/2020/216142
Kind Code:
A1
Abstract:
Provided is a carbon dioxide fluidity control device. The device comprises a sample preparation tank (1), a high-pressure stirring unit (7), a reciprocating plunger pump (12) and a booster pump (6), wherein the high-pressure stirring unit (7) comprises one or more high-pressure stirring tanks, each of the high-pressure stirring tanks is provided with an atomizing spray probe (8) and a piston (11), a discharge port of the sample preparation tank (1) is connected to the atomizing spray probe (8) via the plunger pump (4), the reciprocating plunger pump (12) is connected to the piston (11) so as to push the piston (11) to reciprocate, the booster pump (6) is connected to the high-pressure stirring tank so as to provide supercritical carbon dioxide to the high-pressure stirring tank, and a discharge port of the high-pressure stirring tank is connected to an oilfield well group. Also provided is a carbon dioxide fluidity control method, comprising the following steps: (i) adding surfactants and nanoparticles into a sample preparation tank (1) to prepare a mixed solution of the surfactants and the nanoparticles; (ii) injecting carbon dioxide into a high-pressure stirring tank by means of a booster pump (6), and heating same; (iii) after the mixed solution prepared in step (i) is pumped by a plunger pump (12) and atomized by an atomizing spray probe (8), spraying same into the high-pressure stirring tank, and stirring same; and (iv) injecting a microemulsion of supercritical carbon dioxide and nano-silicon dioxide as prepared in step (iii) into a subsequent oilfield well group.
Inventors:
ZHANG CHAO (CN)
LI ZHAOMIN (CN)
LI SONGYAN (CN)
WANG YONG (CN)
LV GUANGZHONG (CN)
WU SHOUYA (CN)
XI LINGHUI (CN)
WANG MEIJIA (CN)
LI ZHAOMIN (CN)
LI SONGYAN (CN)
WANG YONG (CN)
LV GUANGZHONG (CN)
WU SHOUYA (CN)
XI LINGHUI (CN)
WANG MEIJIA (CN)
Application Number:
PCT/CN2020/085292
Publication Date:
October 29, 2020
Filing Date:
April 17, 2020
Export Citation:
Assignee:
UNIV CHINA PETROLEUM EAST CHINA (CN)
International Classes:
B01F3/08; B01F11/02; B01F13/06; B01F13/10; B01F15/02; C09K8/594; E21B43/22
Foreign References:
| CN109999684A | 2019-07-12 | |||
| CN103867169A | 2014-06-18 | |||
| CN104549021A | 2015-04-29 | |||
| US20180333692A1 | 2018-11-22 | |||
| CN105257264A | 2016-01-20 | |||
| US10047275B2 | 2018-08-14 | |||
| US20190010382A1 | 2019-01-10 |
Attorney, Agent or Firm:
RUNPING & PARTNERS (CN)
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