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Polymer suspension emulsion for fracturing fluid and preparation method thereof

A technology of suspending emulsions and polymers, which is applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems that polymer powders and emulsions cannot meet the requirements of continuous mixing and large-displacement construction, and achieve process safety and environmental protection risks Low, good salt resistance, rapid dissolution effect

Pending Publication Date: 2021-01-05
江西富诚生态环境科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a polymer suspoemulsion for fracturing fluid and its preparation method in view of the problem that the existing polymer powder and emulsion cannot meet the requirements of continuous mixing and large displacement construction

Method used

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  • Polymer suspension emulsion for fracturing fluid and preparation method thereof
  • Polymer suspension emulsion for fracturing fluid and preparation method thereof
  • Polymer suspension emulsion for fracturing fluid and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] A polymer suspoemulsion for fracturing fluid, comprising components in the following proportions by weight:

[0036] 350 parts of mineral oil, 20 parts of carboxymethyl cellulose, 550 parts of polyacrylamide powder for oil field drilling, 70 parts of potassium chloride, 75 parts of ammonium lauryl ether sulfate, 60 parts of polyoxyethylene ether, and 10 parts of propylene glycol.

[0037] The preparation process method is as follows:

[0038] (1) Place the ton barrel with mineral oil on the ton scale, open the discharge valve, oil well pump and feed valve in turn, add mineral oil to the production kettle according to the process regulations, turn on the stirring motor of the production kettle, and the stirring frequency is 25Hz .

[0039] (2) Put the weighed carboxymethyl cellulose, polyacrylamide powder and potassium chloride into the feed bin in sequence, open the powder feed valve and conveyor, and add the powder into the production kettle.

[0040] (3) Adjust the ...

Embodiment 2

[0045] A polymer suspoemulsion for fracturing fluid, comprising components in the following proportions by weight:

[0046] 450 parts of mineral oil, 16 parts of bentonite, 350 parts of polyacrylamide powder for oil field drilling, 80 parts of inorganic potassium salt, 100 parts of ammonium lauryl ether sulfate, 35-60 parts of polyoxyethylene ether, and 10 parts of propylene glycol.

[0047] Preparation method is with embodiment 1.

Embodiment 3

[0049] A polymer suspoemulsion for fracturing fluid, comprising components in the following proportions by weight:

[0050] 400 parts of mineral oil, 18 parts of a mixture of carboxymethyl cellulose and bentonite in equal mass ratios, 450 parts of polyacrylamide powder for oil field drilling, 75 parts of inorganic potassium salt, 90 parts of ammonium cetyl ether sulfate, polyoxyethylene ether 50 parts, 10 parts of propylene glycol.

[0051] Preparation method is with embodiment 1.

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Abstract

The invention discloses a polymer suspension emulsion for fracturing fluid. The polymer suspension emulsion comprises the following components in parts by weight: 350-450 parts of mineral oil, 16-20 parts of a suspending agent, 350-550 parts of polymer powder, 70-80 parts of inorganic potassium salt, 75-100 parts of alkyl ether ammonium sulfate, 35-60 parts of a demulsifying agent and 10 parts ofa wetting agent. The preparation method of the suspension emulsion comprises the following steps: (1) adding mineral oil into a production kettle, and starting stirring at the stirring frequency of 25Hz; (2) sequentially adding the suspending agent, the polymer powder and the sylvite into a production kettle; (3) adjusting the stirring frequency to 35Hz, opening a circulating valve of the production kettle, starting a primary circulating pump, and circularly stirring the materials for 30min; and (4) adding alkyl ether ammonium sulfate, the demulsifying agent and the wetting agent, closing theprimary circulating pump, starting the secondary circulating pump, and continuously and circularly stirring for 30 minutes to obtain the polymer suspension emulsion for the fracturing fluid. The suspension emulsion prepared by the invention has the advantages of rapid dissolution, good salt resistance, good stability and low cost, and meets the technical requirements of continuous blending large-displacement hydraulic fracturing construction.

Description

technical field [0001] The invention relates to the technical field of oil and gas field exploitation, in particular to a polymer additive suspend emulsion for fracturing fluid and a preparation method thereof. Background technique [0002] The exploitation of unconventional energy shale gas and tight gas requires continuous mixing and large-displacement hydraulic fracturing. At the same time, in order to save costs and reduce environmental damage, on-site water and flowback water will be used to mix the fracturing fluid. Additives put forward the basic requirements of rapid dissolution and good salt resistance. [0003] At present, the polyacrylamide additives used in the exploitation of unconventional oil and gas resources are mainly divided into two forms: dry powder and emulsion. Among them, the performance of powder is better (affected by the polymerization process), and the use of emulsion is more convenient (form). Among them, the powder has problems such as slow dis...

Claims

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Application Information

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IPC IPC(8): C08J3/11C08J3/09C09K8/64C09K8/68C09K8/88C08L33/26
CPCC08J3/11C08J3/092C09K8/64C09K8/68C09K8/882C09K8/885C09K8/90C08J2333/26
Inventor 张学文张学武宋劲
Owner 江西富诚生态环境科技集团有限公司
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