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Oilfield polymer viscosity loss inhibitor and use method thereof

A viscosity loss and polymer technology, which is applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems of unstable polymer viscosity and large loss, and achieve easy acquisition, improved stability, and reduced production input costs Effect

Pending Publication Date: 2020-09-15
HUACHEN ENVIRONMENTAL PROTECTION ENERGY (GUANGZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the problem of unstable polymer viscosity and large loss in the process of injecting the existing prepared polymer into the ground, and further provides an oilfield polymer viscosity loss inhibitor and its application method

Method used

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  • Oilfield polymer viscosity loss inhibitor and use method thereof
  • Oilfield polymer viscosity loss inhibitor and use method thereof
  • Oilfield polymer viscosity loss inhibitor and use method thereof

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Experimental program
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specific Embodiment approach 1

[0015] Embodiment 1: In this embodiment, an oilfield polymer viscosity loss inhibitor is composed of 5-20% nitrite, 0.1% sodium hydroxide, 0.01-0.03% nutrient elements, 0.1-0.5% % of synergistic inhibitors and the balance made of water.

specific Embodiment approach 2

[0016] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the nutrient element is a mixture of sodium nitrate, potassium nitrate and sodium nitrite; wherein, the volume ratio of sodium nitrate, potassium nitrate and sodium nitrite is 0.5 :0.5:1. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0017] Specific embodiment three: what this embodiment is different from specific embodiment one or two is: described synergistic inhibitor is the mixture of ammonium molybdate and sodium molybdate; Wherein, the volume ratio of ammonium molybdate and sodium molybdate is 1: 1. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses an oilfield polymer viscosity loss inhibitor and a use method thereof, relates to an oilfield polymer viscosity loss inhibitor and a use method thereof, and aims to solve the problems of unstable viscosity and large loss of the polymer in the process of injecting the prepared polymer into the underground in the prior art. The auxiliary agent is prepared from nitrite, sodiumhydroxide, nutrient elements, a synergistic inhibitor and water in percentage by mass. The oilfield polymer viscosity loss inhibitor is used for preparing polymer mother liquor and diluting polymersand then used for oil exploitation.

Description

technical field [0001] The invention relates to an oilfield polymer viscosity loss inhibitor and a method for using the same. Background technique [0002] With the continuous development of the oil field, the water content of the conventional water flooding oil recovery method is getting higher and higher, and the output of the oil field is declining, so as to promote the progress of oil recovery technology and improve the recovery rate of the oil field. At present, it has developed to the third generation of oil recovery technology, which is a three-component composite oil flooding technology using polymer + alkali + surfactant, which has been widely used in oil fields. With the gradual increase of the mining scale, the water consumption is also gradually increasing. At the same time, the large amount of produced water in the oilfield will also cause serious environmental pollution. In order to reduce the use of clean water and the sewage discharge of the oilfield, oilfiel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/58C09K8/588C09K8/88
CPCC09K8/58C09K8/588C09K8/882C09K8/845
Inventor 魏利赵云发魏东张昕昕欧阳嘉潘春波李春颖
Owner HUACHEN ENVIRONMENTAL PROTECTION ENERGY (GUANGZHOU) CO LTD
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