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A kind of acidification diverting agent and preparation method thereof

A technology of acidification diversion and compound, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of acidification diversion agent with many components, complicated preparation method, high cost, etc. Simple, low-cost preparation effects

Active Publication Date: 2021-11-30
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the acidification diverting agent has many components, the preparation method is complicated, and the cost is relatively high

Method used

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  • A kind of acidification diverting agent and preparation method thereof
  • A kind of acidification diverting agent and preparation method thereof
  • A kind of acidification diverting agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0046] The preparation of preparation example 1 synthetic polymer

[0047] S1: Dissolve 94% of the polymer monomer of formula III, 1% of the polymer monomer of formula IV, and 5% of the polymer monomer of formula V in deionized water in order to obtain a mixed solution A;

[0048] S2: Use sodium hydroxide as an alkaline regulator to adjust the pH value of the mixed solution A to 7.0, add the initiator azobisisobutylamidine hydrochloride to initiate the polymerization reaction, the dosage is 0.50% of the total mass of the polymer, and the polymerization reaction Carried out at 50°C for 6 hours to obtain a gel-like product;

[0049] S3: Wash the gel product obtained in step S2 with ethanol three times, dry at 50° C. for 24 hours, and pulverize to obtain a synthetic polymer.

[0050] The acidification diverted polymer obtained by the preparation method of Preparation Example 1, its infrared spectrum characterization is as follows image 3 shown, of which, 3397cm- 1 It is the N...

preparation example 2

[0052] The preparation of preparation example 2 synthetic polymers

[0053] The preparation method of the synthetic polymer is the same as Preparation Example 1, the difference is that the molar proportions of the three polymer monomers in step S1 are different, the formula III polymer monomer is 95.5%, the formula IV polymer monomer is 1.5%, and the formula V Polymer monomer 3%.

Embodiment 1

[0054] Embodiment 1 acidification diverting agent and the preparation of diverting acid

[0055] Mix 10 parts of the synthetic polymer prepared in Preparation Example 1 with 0.5 part of sodium lauryl sulfate to prepare an acidifying diverting agent. Take 100 parts of 20% hydrochloric acid solution, 1.2 parts of acidifying diverting agent, 1.5 parts of acidizing corrosion inhibitor, and 1 part of iron ion stabilizer, stir and mix to obtain diverting acid.

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Abstract

The invention discloses an acidification diversion agent. The acidification diversion agent includes 90-100 parts of synthetic polymer and 5-10 parts of surfactant. The synthetic polymer is composed of acrylamide compound monomer and acrylammonium chloride. The compound is formed by polymerizing monomers, and the surfactant is selected from one or a combination of sodium dodecyl sulfate and sodium tetradecyl sulfate. The acidification diversion agent provided by the invention has simple composition and preparation method, low product cost, small addition amount during construction, and good temperature resistance and other obvious advantages.

Description

technical field [0001] The invention belongs to petrochemical technology, and in particular relates to an acidifying diverting agent, a preparation method thereof, and a diverting acid comprising the acidifying diverting agent. Background technique [0002] Since my country became an oil-importing country in 1993, its oil imports have grown at a rate of 10 million tons per year. In 2000, my country's total oil imports reached 70.73 million tons, making it a major oil importer. Long-term large-scale oil imports not only cause a heavy economic burden to the country, but also affect national security. In order to meet the demand for crude oil for rapid economic development, improvement of people's living standards and national defense security, it is necessary to increase the exploration and development of oil and natural gas. [0003] The acidification of carbonatite reservoirs in oilfields is one of the indispensable production stimulation measures in the process of oilfield...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/74C08F220/56C08F226/02C08F220/60
CPCC08F220/56C09K8/74C08F226/02C08F220/60
Inventor 全红平蒋思龙吴洋段文猛陈中豪甄学乐
Owner SOUTHWEST PETROLEUM UNIV
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