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Augmented injection liquid, preparation method and application thereof

A liquid injection and liquid-carrying technology, which is applied in chemical instruments and methods, earthwork drilling, and mining fluids, etc., can solve the problems of lack of green environmental protection blockage removal and injection technology, short validity period, etc., to reduce fluid seepage resistance and improve validity period , the effect of preventing water from entering the interior of the clay

Active Publication Date: 2021-05-28
CHINA OILFIELD SERVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And when the effect of plugging removal measures fails for the first time in the well history, the same system will continue to be used for the second and third rounds of conventional plugging removal measures; after multiple rounds of plugging removal for low-production and low-efficiency wells, the effective period is getting shorter and shorter
And there is currently a lack of green environmental protection, long-term depressurization technology for deblocking and increasing injection

Method used

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  • Augmented injection liquid, preparation method and application thereof
  • Augmented injection liquid, preparation method and application thereof
  • Augmented injection liquid, preparation method and application thereof

Examples

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preparation example Construction

[0063] In yet another aspect, the present application provides a method for preparing the above-mentioned injection liquid, which includes the following steps: after uniformly mixing the raw materials of the carrier liquid and the nano-silicon material, the temperature is raised to 25° C. to 40° C., and the temperature is kept for 0 h to 2 h, and then cooled again. Add nano-silicon material, mix and stir evenly to obtain nano-silicon material carrier liquid;

[0064] In the examples of the present application, the raw materials are added to the container in the order of water, biosurfactant, bioenzyme, cosolvent, microbial polysaccharide, and nanosilicon material.

[0065] In the examples of this application, the sophorolipid CAS number is 148409-20-5.

[0066] In the examples of the present application, the rhamnolipid is CAS: 147858-26-2.

Embodiment 1

[0068] In this embodiment, the lipase is a mixture of Pseudomonas sp. microorganisms and Bacillus sp. microorganisms producing lipase in a ratio of (W / W) 1:1;

[0069] The protease is the protease produced by the microorganism of Bacillus sp. and the protease produced by the microorganism of the genus Curtobacterium sp. mixed according to (W / W) 1:1;

[0070] Esterase is a mixture of Acinetobacter sp. microbial esterase and Pseudomonas sp. microbial esterase (W / W) 1:1

[0071] In the present embodiment, the xanthan gum was purchased from Nantong Yingruida Biotechnology Co., Ltd., Freetech brand;

[0072] The hydrophobic nano-polysilicon aminosilane-modified silicon material was purchased from Changtai Micro-Nano Chemical Factory in Shouguang, Shandong Province, Changtai CT-617.

[0073] Example The total amount of biological nano-injection system is 223m 3 , where biological nanofluid: water = 1:9 (V / V).

[0074] The composition of the biological nano-carrier fluid is as fol...

Embodiment 2

[0078] In this embodiment, the isomerase is selected from isomerase produced by microorganisms of the genus Rhodobacter sp., isomerase produced by microorganisms of the genus Lactobacillus acidophilus sp. (W / W) 1: 1 mix;

[0079] In this embodiment, the amylase is selected from Bacillus sp. microorganism producing amylase;

[0080] In this embodiment, the biological macromolecule stabilizer is a fermentation broth of microorganisms belonging to the genus Lactobacillus.

[0081] The hydrophobic nano-polysilicon is a vinylsilane-modified silicon material, which was purchased from Changtai Micro-Nano Chemical Factory in Shouguang, Shandong Province, Changtai CT-619 brand.

[0082] Example The total amount of biological nano-injection system is 178m 3 , where biological nanofluid: water = 1:9 (V / V).

[0083] The composition ratio of the biological nano-carrier liquid is as follows (w / w): , microbial fermentation biosurfactant (6%), isomerase (1.5%), amylase (2.5%), isoamyl alco...

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Abstract

The invention discloses an augmented injection liquid, a preparation method and application thereof. The augmented injection liquid comprises a carrying liquid and a nanometer silicon material, wherein the carrying liquid comprises the following components by weight: 0.1-1% of a biological surfactant, 0.1-2% of a biological enzyme, 0.5-2% of a cosolvent, 0.01-0.1% of microbial polysaccharide, and the balance of water, wherein the weight ratio of the carrying liquid to the nano silicon material is 100: (0.01-10). According to the augmented injection liquid, microbial metabolites are used as a dispersion system, synthesis and performance of a nano resistance-reducing augmented injection material are utilized, and technical mechanisms such as wetting reversal, adsorption, scouring resistance and pore and permeability increase of a nano material are comprehensively applied to reduce seepage resistance near a shaft, so that the validity period of measures is greatly prolonged.

Description

technical field [0001] This article relates to, but is not limited to, an oilfield working fluid, especially but not limited to a boosting fluid and its preparation method and application. Background technique [0002] Most of the reservoirs in offshore oilfields are of loose sandstone type. Due to the high shale content of the reservoir, poor reservoir cementation, and the quality of the injected water, such oilfields generally have problems such as high water injection pressure, frequent operations, and failure to achieve distribution and injection, which seriously restricts the development effect of oilfield water injection. Increase in the degree of reserve utilization. In order to solve the problem of injection difficulties in conventional water injection wells and improve the water absorption index of the reservoir, acidification measures such as hydrochloric acid, fluoroboric acid, and soil acid are generally used to dissolve the blockages in the reservoir. However,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/514C09K8/90E21B43/22
CPCC09K8/514C09K8/905E21B43/16C09K2208/10C09K2208/12
Inventor 李啸南冯青黄子俊李敬松张宁徐文娟宫汝祥刘子雄杨慰兴曾鸣杨浩姜杰王飞汪超王绪性高杰
Owner CHINA OILFIELD SERVICES
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