A kind of microbial oil displacement agent and preparation method thereof

A technology for microbial oil flooding and coconut oil is applied in chemical instruments and methods, earthwork drilling, drilling compositions, etc., can solve problems such as restricting popularization and application, achieve high economic benefits, strong reliability, and improve crude oil recovery. Yield effect

Active Publication Date: 2020-10-27
DAQING HUAYING CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The oil recovery rate of microbial oil recovery technology after polymer flooding can only be increased by 2~4%, which greatly limits the popularization and application of this technology

Method used

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  • A kind of microbial oil displacement agent and preparation method thereof
  • A kind of microbial oil displacement agent and preparation method thereof
  • A kind of microbial oil displacement agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] 50kg of coconut oil, 30kg of starch, NaNO 3 6kg, K 2 HPO 4 2kg, KH 2 PO 4 2.5kg, NaCl 1.5kg, MgSO 4 0.5 kg, K 2 SO 4 0.08 kg and 950 kg of deionized water were placed in a fermenter, the temperature was raised to 33 °C and continuously stirred, the pH of the solution was adjusted to 7.2 with a 3% NaOH solution by mass, and the solution was sterilized at 115 °C for 20 min.

[0047] Cool to 28°C, add 10kg of Bacillus amyloliquefaciens bacterial liquid to the fermenter, then add 80kg of lauryl aminopropionic acid, and ferment at constant temperature for 7 days. That is, the desired microbial oil-displacing agent is obtained.

Embodiment 2

[0049] 60kg of coconut oil, 40kg of starch, NaNO 3 7kg, K 2 HPO 4 2.3kg, KH 2 PO 4 2.0kg, NaCl 1.3kg, MgSO 4 0.4kg, K 2 SO 4 0.06kg and 900kg of deionized water were placed in a fermenter, heated to 40°C and continuously stirred, the pH of the solution was adjusted to 7.2 with 3% NaOH solution by mass, and sterilized at 115°C for 20min.

[0050] Cool to 40° C., add 20 kg of Bacillus amyloliquefaciens bacterial liquid to the fermentation tank, add 90 kg of lauryl aminopropionic acid, and ferment at constant temperature for 6 days. That is, the desired microbial oil-displacing agent is obtained.

Embodiment 3

[0052] 80kg of coconut oil, 50kg of starch, NaNO 3 8kg, K 2 HPO 4 2.5kg, KH 2 PO 4 1.5kg, NaCl 1kg, MgSO 4 0.3kg, K 2 SO 4 0.05kg and 800kg of deionized water were placed in a fermenter, heated to 55°C and continuously stirred, the pH of the solution was adjusted to 7.2 with 3% NaOH solution by mass, and sterilized at 115°C for 20min.

[0053] Cool to 55°C, add 40kg of Bacillus amyloliquefaciens bacterial liquid to the fermentation tank, then add 100kg of lauryl aminopropionic acid, and ferment at constant temperature for 5 days. That is, the desired microbial oil-displacing agent is obtained.

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Abstract

The invention relates to a microbial oil displacement agent, the composition and weight of which are: coconut oil 50~80kg, starch 30~50kg, NaNO 3 6~8kg, K 2 HPO 4 2~2.5kg, KH 2 PO 4 1.5~2.5kg, NaCl 1~1.5kg, MgSO 4 0.3~0.5kg,K 2 SO 4 0.05-0.08 kg, Bacillus amyloliquefaciens bacteria liquid 10-40kg, lauryl alanine 80-100kg, deionized water 800-950kg. The invention also provides a preparation method of the microbial oil displacement agent. The microbial oil displacement agent of the present invention has strong oil washing ability, can effectively increase the oil recovery rate by 6-9%, has the characteristics of strong reliability, good use effect and high economic benefit as a whole, and is suitable for popularization and application in oil fields in a wide range.

Description

technical field [0001] The invention belongs to the technical field of tertiary oil recovery, and relates to a microbial oil-displacing agent and a preparation method thereof. Background technique [0002] The principle of chemical oil recovery technology that is widely used at present is to use chemical recovery aids such as surfactants, polymers, etc. to reduce the viscosity of heavy oil and improve oil recovery. This method has remarkable effect and wide application range. It is the most important tertiary oil recovery technology in the world today, and has defects such as destroying the formation and polluting the environment. Microbial oil recovery technology mainly uses the movement of microorganisms and their metabolites to play a role. These substances can be biodegraded, the effect is lasting, and it is clean and environmentally friendly. [0003] Microbial oil recovery technology refers to the technology of injecting screened microorganisms or microbial metabolite...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/582C09K8/60E21B43/22
CPCC09K8/582C09K8/605E21B43/16
Inventor 孙安顺
Owner DAQING HUAYING CHEM IND
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