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A kind of compound oil-displacing agent containing lipopeptide and using method thereof

A technology for compound oil displacement and lipopeptide, which is applied in the directions of drilling compositions, chemical instruments and methods, and earth-moving drilling, etc., can solve problems such as inability to improve oil recovery, and achieve the effect of improving oil recovery.

Active Publication Date: 2022-04-05
DAQING OILFIELD CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] For this reason, the present invention provides a kind of composite oil displacement agent containing lipopeptide and its use method, can solve the technical problem that can't improve the crude oil recovery rate through the use method of oil displacement agent

Method used

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  • A kind of compound oil-displacing agent containing lipopeptide and using method thereof
  • A kind of compound oil-displacing agent containing lipopeptide and using method thereof
  • A kind of compound oil-displacing agent containing lipopeptide and using method thereof

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Embodiment

[0107] Embodiment: The compound oil displacement agent containing lipopeptide in the embodiment of the present invention, its unique evaluation method, including the optimal method for compounding the composite oil displacement agent compound system containing lipopeptide and the anti-adsorption and anti-adsorption properties of the system, dilution, Salt resistance, hard water resistance research:

[0108] (1) Optimization of different compounding ratios

[0109] By adjusting the concentration ratio and compound ratio of the lipopeptide / petroleum sulfonate weak base compound system, the system formula was optimized, and the optimal compound surfactant concentration and ratio were screened, see Table 1.

[0110] Table 1 Composite oil displacement agent containing lipopeptide

[0111]

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PUM

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Abstract

The present invention relates to a compound oil displacement agent containing lipopeptide and its use method, including step S1, injecting a weak alkali solution into a stirring chamber through a first injection port for stirring, and mixing petroleum sulfonate and lipopeptide into the first The composition is injected into the stirring chamber through the second injection port and stirred with the weak base solution to form a second composition, and the polymer is injected into the stirring chamber through the third injection port and mixed with the second composition to form a composite oil displacement agent containing lipopeptide; Step S2, turn on the infusion pump, the composite oil displacement agent containing lipopeptide is delivered to the liquid injection pipe through the detection tube, the central control unit opens the regulating valve, and injects the composite oil displacement agent containing lipopeptide into the natural core; step S3, the central control unit Control the oil extraction device to extract oil. In the present invention, a central control unit is set, and according to the real-time viscosity of the formed composite oil-displacing agent, different injection ports are set to control the input amount of different materials; Oil recovery rate.

Description

technical field [0001] The invention relates to the field of oil displacing agents, in particular to a lipopeptide-containing composite oil displacing agent and a use method thereof. Background technique [0002] The development of an oil field is divided into three processes: first, use natural energy such as the elastic energy of the reservoir fluid, the hydraulic pressure of the edge water, the gravity of the crude oil itself, and the gas cap pressure to carry out extraction, which is called primary oil recovery. The recovery rate is about 20% to 30%; second, when the natural energy is gradually consumed and there is no production capacity, measures such as gas injection and water injection are artificially taken to maintain the pressure of the reservoir to continue production, that is, gas flooding and water flooding. Secondary oil recovery, the recovery rate is about 20% to 40%; third, after replenishing the reservoir pressure and still unable to continue the production...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/22C09K8/588C09K8/584
CPCE21B43/16C09K8/588C09K8/584
Inventor 黄文庆董喜贵赵劲毅李国桥郝金生孙琦孙远卓纪海龙闵洁仲丛欣董帅孙雨飞
Owner DAQING OILFIELD CO LTD
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