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Sodium lauroyl sarcosine-glycylglycine compound and composite oil displacement agent

A technology of double glycoside peptide compound oil displacement agent, sodium lauroyl sarcosinate, applied in drilling composition, peptide, organic chemistry and other directions, can solve the problem of reducing the effect of microbial oil displacement, inability to achieve microbial oil displacement, and microbial movement. It can improve the efficiency of synergistic reaction, the operability and applicability are strong, and the method is simple.

Active Publication Date: 2020-10-13
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the addition of chemical oil displacement agents and their reaction process often destroy the physiological functions of microorganisms, reduce the effect of microbial oil displacement, and even cause large-scale death of microorganisms, resulting in the failure of microbial oil displacement.
In addition, the addition of chemical oil displacement agents will also lead to the weakening of microbial movement and permeability, making it difficult to produce substantial oil displacement in low permeability reservoirs

Method used

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  • Sodium lauroyl sarcosine-glycylglycine compound and composite oil displacement agent
  • Sodium lauroyl sarcosine-glycylglycine compound and composite oil displacement agent
  • Sodium lauroyl sarcosine-glycylglycine compound and composite oil displacement agent

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Effect test

Embodiment 1

[0069] This embodiment provides a kind of microbial-chemical composite oil displacement agent, and it is prepared through the following steps:

[0070] (1) Add 200mL of the culture medium of the inoculated strain to a 500mL Erlenmeyer flask, place it in an air-bath shaker at 65°C and 170r / min for cultivation, and when the bacteria grow to the late logarithmic period, centrifuge at 8000r / min for 15min to collect the cells , washed with dilute sulfuric acid (pH value = 2) to remove impurities, and suspend the bacteria to make a suspension (1cm cuvette) with an absorbance value of 1 at a wavelength of 600nm. Centrifuge for 10 minutes to collect the lower layer of bacteria;

[0071] (2) Bacteria were eluted with water at 40°C for 12h, centrifuged, and the upper capsule solution was taken for chromatographic separation and purification to obtain the diglycopeptide (during the chromatographic separation, the retention time of the upper capsule solution was determined according to th...

Embodiment 2

[0078] This embodiment provides a kind of microbial-chemical composite oil displacement agent, and it is prepared through the following steps:

[0079] (1) Add 200mL of the culture medium of the inoculated strain to a 500mL Erlenmeyer flask, place it in an air-bath shaker at 65°C and 170r / min for cultivation, and when the bacteria grow to the late logarithmic period, centrifuge at 8000r / min for 15min to collect the cells , washed with dilute sulfuric acid (pH value = 2) to remove impurities, and suspend the bacteria to make a suspension (1cm cuvette) with an absorbance value of 1 at a wavelength of 600nm. Centrifuge for 10 minutes to collect the lower layer of bacteria;

[0080] (2) Bacteria were eluted with water at 40°C for 12h, centrifuged, and the upper capsule solution was taken for chromatographic separation and purification to obtain the diglycopeptide (during the chromatographic separation, the retention time of the upper capsule solution was determined according to th...

Embodiment 3

[0084] This embodiment provides a kind of microbial-chemical composite oil displacement agent, and it is prepared through the following steps:

[0085] (1) Add 200mL of the culture medium of the inoculated strain to a 500mL Erlenmeyer flask, place it in an air-bath shaker at 65°C and 170r / min for cultivation, and when the bacteria grow to the late logarithmic period, centrifuge at 8000r / min for 15min to collect the cells , washed with dilute sulfuric acid (pH value = 2) to remove impurities, and suspend the bacteria to make a suspension (1cm cuvette) with an absorbance value of 1 at a wavelength of 600nm. Centrifuge for 10 minutes to collect the lower layer of bacteria;

[0086] (2) Bacteria were eluted with water at 40°C for 12h, centrifuged, and the upper capsule solution was taken for chromatographic separation and purification to obtain the diglycopeptide (during the chromatographic separation, the retention time of the upper capsule solution was determined according to th...

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Abstract

The invention provides a sodium lauroyl sarcosine-glycylglycine compound and a composite oil displacement agent. The chemical structural formula of the sodium lauroyl sarcosine-glycylglycine compoundis shown in the description. The sodium lauroyl sarcosine-glycylglycine composite oil displacement agent including the sodium lauroyl sarcosine-glycylglycine compound obtained through the reaction ofsodium lauroyl sarcosine and glycylglycine is provided. The compounding of the composite oil displacement agent and oil production function bacteria can be well realized, so that a microbial-chemicalcomposite oil displacement agent can be formed. The microbial-chemical composite oil displacement agent has the efficacy of microorganisms to degrade crude oil and reduce the viscosity of the crude oil, and also has the effects of chemical flooding to emulsify the crude oil and reduce the viscosity of the crude oil; and through the mode of biological carrying, the swept volume and dispersion efficiency of a chemical oil displacement agent in oil layers can be expanded, so that the synergistic reaction efficiency of the microorganisms and the chemical agent can be effectively enhanced, and thepurpose of 1+1>2 can be realized.

Description

technical field [0001] The invention belongs to the technical field of tertiary oil recovery, and relates to the preparation and application of a microbial-chemical composite oil displacement agent, in particular to a sodium lauroyl sarcosinate-diglycoside peptide compound and a composite oil displacement agent. Background technique [0002] With the rapid development of the national economy, the demand for oil continues to increase, and the contradiction between oil consumption and supply has become more prominent. In order to solve the above contradictions, in addition to increasing exploration efforts and continuing to search for oil resources, increase crude oil recovery in developed oil fields Rate is also one of the effective ways. [0003] Microbial enhanced oil recovery (MEOR) is a technology that enhances oil recovery by utilizing the natural biochemical effects (biodegradation and metabolites) of living cells of microorganisms. By injecting microorganisms and / or n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07K5/083C07K1/02C09K8/584
CPCC07K5/0804C09K8/584
Inventor 王璐赵越宋文枫章骏江航田茂章
Owner PETROCHINA CO LTD
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