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Preparation method of oil recovery sand-carrying fluid treatment agent

A treatment agent and sand-carrying liquid technology, applied in chemical instruments and methods, mining fluids, earthwork drilling, etc., can solve problems such as weak wetting and penetration ability, inability to maximize functions, and inability to achieve compatibility. To achieve the effect of improving wetting and penetrating ability, increasing sand-carrying function, and increasing clay stability

Active Publication Date: 2019-08-09
ZHEJIANG TAI CHUEN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the sand-carrying fluid has considerable functions, but in general, the performance of the sand-carrying fluid cannot be maximized without the promotion of the treatment agent.
For example, the clay stability of the sand-carrying liquid, anti-salt scaling, compatibility and other properties cannot achieve the best results, resulting in weak wetting and penetrating ability

Method used

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  • Preparation method of oil recovery sand-carrying fluid treatment agent
  • Preparation method of oil recovery sand-carrying fluid treatment agent
  • Preparation method of oil recovery sand-carrying fluid treatment agent

Examples

Experimental program
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preparation example Construction

[0009] The preparation method of oil recovery sand-carrying fluid treatment agent is characterized in that it includes the following steps: (a) material selection: 50% dimethylamine-epichlorohydrin polycondensate, the dimethylamine-epoxychlorohydrin polycondensate Appearance: light yellow-yellow viscous liquid, solid content greater than or equal to 50%, less than 100%, pH value at 1% concentration: 6-9, viscosity (CPS): 500-6500. 20% propylene Amide-diethyldiallyl ammonium chloride copolymer, the appearance of the described acrylamide-diethyldiallyl ammonium chloride copolymer: pale yellow viscous liquid; solid content: 10% to 20% %; pH value at 1% concentration: 3-7, viscosity (cps): 500-12000cps. 25% diallylamine-acrylamide-dimethyl diallyl ammonium chloride copolymer, 5% potassium chloride; (b) mixing: put the raw materials into the reaction kettle, start stirring, and fully stir Uniform, used as oil recovery sand-carrying fluid treatment agent.

[0010] Experimental met...

Embodiment 2

[0030] In this embodiment, the technical scheme is basically the same as that in Embodiment 1, the only difference is that the polycondensate of dimethylamine-epichlorohydrin accounts for 48% of the total content, and the polycondensate of diallylamine-acrylamide-dimethyl diene Propyl ammonium chloride copolymer accounts for 25% of the total content, potassium chloride accounts for 7% of the total content, and acrylamide-diethyl diallyl ammonium chloride copolymer accounts for 20% of the total content.

Embodiment 3

[0032] In this embodiment, the technical scheme is basically the same as that in Embodiment 1, the only difference is that the polycondensate of dimethylamine-epichlorohydrin accounts for 52% of the total content, and the polycondensate of diallylamine-acrylamide-dimethyl diene Propyl ammonium chloride copolymer accounts for 25% of the total content, potassium chloride accounts for 3% of the total content, and acrylamide-diethyl diallyl ammonium chloride copolymer accounts for 20% of the total content.

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Abstract

The invention relates to the technical field of chemical production and relation to a production method, in particular to a preparation method of an oil extraction sand carrying liquid treating agent. The method includes the steps that a, materials are selected; b, the materials are mixed. The method has the advantages that the oil extraction sand carrying liquid treating agent can improve performance of sand carrying liquid and enhance the functions of the sand carrying liquid. Meanwhile, after the oil extraction sand carrying liquid treating agent is added, stability of clay, salt prevention and scale prevention performance and compatibility are enhanced, and therefore wetting infiltration capacity is remarkably improved, and the oil extraction sand carrying liquid treating agent is multipurpose. Meanwhile because of excellent compatibility of the oil extraction sand carrying liquid treating agent and good compatibility of other components in the sand carrying liquid, the oil extraction sand carrying liquid treating agent is an ideal addition agent improving the sand carrying function of the sand carrying liquid.

Description

technical field [0001] The invention relates to the technical field of chemical production, and relates to a production method, in particular to a preparation method of an oil recovery sand-carrying fluid treatment agent. Background technique [0002] The sand-carrying fluid is the liquid used to carry the proppant into the fracture after the formation is broken and a fracture of a certain width is formed. It also has the function of creating fractures and cooling the formation. In addition to good sand-suspending performance, the sand-carrying liquid also requires low filter loss. The sand-carrying fluid can be divided into two types according to its ability to suspend sand: full-suspension sand-carrying (sand does not settle in the sand-carrying fluid) and subsidence-carrying sand (sand slowly sinks in the sand-carrying fluid). It can be seen that the sand-carrying fluid has considerable functions, but in general, the performance of the sand-carrying fluid cannot be maxi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/80C09K8/03C09K8/88
CPCC09K8/03C09K8/80C09K8/882C09K8/885C09K2208/12
Inventor 俞益平周铁林俞敏达
Owner ZHEJIANG TAI CHUEN NEW MATERIAL TECH CO LTD
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