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Water shutoff agent and preparation method thereof

A technology of water blocking agent and reinforcing agent, applied in the field of water blocking agent and its preparation, can solve the problems of high temperature resistance, poor salinity resistance performance of water blocking agent, clogging of water blocking agent, etc., so as to improve the salinity resistance. performance, improve high temperature resistance, remarkable effect

Active Publication Date: 2017-10-20
山东科兴化工有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention: aiming at the defects that the existing water blocking agent has poor high temperature resistance and salinity resistance and cannot be used in a high temperature and high salinity environment, and at the same time the water blocking agent enters the oil layer and is easy to cause blockage, it provides A kind of water blocking agent and preparation method thereof

Method used

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  • Water shutoff agent and preparation method thereof

Examples

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Effect test

example 1

[0023] Take 20g of graphene powder, 10g of sodium periodate and 100mL of nitric acid solution with a mass fraction of 65% into a beaker, move the beaker into a water bath, control the temperature of the water bath to 85°C, stir and react for 60 minutes and then filter to obtain a filter residue. Wash 3 times with water to obtain a cleaned filter residue, add the cleaned filter residue, 100g of Sphagnum tenifolia and 80mL of water to a mortar and grind for 15min to obtain a mixed slurry, mix the mixed slurry, 10g of glucose, 3g of ammonium tartrate and 600mL of water Add it into the fermenter, and ferment it at 30°C for 5 days. After the fermentation, the fermentation product is obtained, and the fermentation product is moved into an oven, and dried at 120°C for 5 hours to obtain a dry product, which is mixed with 80 mL of methallyl alcohol Add it into a three-necked flask with a thermometer and a reflux device, move the three-necked flask into an oil bath, control the temperatu...

example 2

[0025]Take 25g of graphene powder, 11g of sodium periodate and 150mL of nitric acid solution with a mass fraction of 65% into a beaker, move the beaker into a water bath, control the temperature of the water bath to 90°C, stir and react for 75 minutes and then filter to obtain a filter residue. Wash 4 times with water to obtain a clean filter residue, add the clean filter residue, 150g sphagnum moss and 90mL water to a mortar and grind for 18min to obtain a mixed slurry, mix the slurry, 13g glucose, 4g ammonium tartrate and 700mL water Add it into a fermenter and ferment in a sealed container at 35°C for 5 days. After the fermentation is over, the fermentation product is obtained. The fermentation product is moved into an oven and dried at 125°C for 5 hours to obtain a dried product. The dried product is mixed with 90 mL of methallyl alcohol Add it into a three-necked flask with a thermometer and a reflux device, move the three-necked flask into an oil bath, control the tempera...

example 3

[0027] Take 30g of graphene powder, 12g of sodium periodate and 200mL of nitric acid solution with a mass fraction of 65% into a beaker, move the beaker into a water bath, control the temperature of the water bath to 95°C, stir and react for 90 minutes and then filter to obtain a filter residue. Wash 5 times with water to obtain a cleaned filter residue, add the cleaned filter residue, 200g of Sphagnum tenifolia and 100mL of water to a mortar and grind for 20min to obtain a mixed slurry, mix the mixed slurry, 15g of glucose, 5g of ammonium tartrate and 800mL of water Add it into the fermenter, and ferment in a sealed manner at 40°C for 6 days. After the fermentation is over, the fermentation product is obtained, and the fermentation product is moved into an oven, and dried at 130°C for 6 hours to obtain a dry product, which is mixed with 100 mL of methallyl alcohol Add it into a three-necked flask with a thermometer and a reflux device, move the three-necked flask into an oil b...

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Abstract

The invention discloses a water shutoff agent and a preparation method thereof, which belong to the technical field of oilfield exploitation chemical preparation. According to the invention, after graphene powder, sodium periodate and nitric acid solution are stirred to react, filtration is carried out, filter residue is collected and washed, the filter residue, sphagnum teres herb and water are then mixed and ground, so that mixed slurry is obtained, the mixed slurry, glucose and ammonium tartrate are mixed for fermentation, the obtained fermentation product is dried, and reacts with methallyl alcohol and sulfuric acid solution, the obtained product is filtered, so that a filter cake, which is modified graphene, is obtained, the modified graphene then reacts with itaconic acid, a catalyst and the like, so that a graphene-modified polymer is obtained, the graphene-modified polymer, sodium fluorosilicate, an additive and the like are then mixed, so that the mixture is obtained, and finally, after the mixture is kneaded, dried and cooled, the water shutoff agent is obtained. The water shutoff agent obtained by the invention has a good water shutoff effect, and moreover, the water shutoff agent has excellent temperature-resistant and mineralization-resistant properties; after being injected into a stratum for use, the water shutoff agent cannot easily cause blockage, and can effectively increase the oil and gas recovery rate; and a good application prospect is realized.

Description

technical field [0001] The invention discloses a water blocking agent and a preparation method thereof, and belongs to the technical field of preparation of oil field exploitation chemicals. Background technique [0002] With the deepening of oilfield water injection development and the breakthrough of injected water, edge water and bottom water, excessive water production has become a common problem faced by many oilfields. Excessive water production will cause a series of problems such as decreased oil well production, wellbore corrosion, well wall scaling, and increased sewage treatment costs. Therefore, solving the problem of excessive water production has become a key issue for oilfields to increase oil recovery and reduce costs. Among many measures to control water and stabilize oil production, the chemical water shutoff method has been widely used because of its simple operation, controllable depth of water shutoff and profile control, and partial selectivity. [000...

Claims

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Application Information

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IPC IPC(8): C09K8/512C09K8/514C09K8/504
Inventor 杨士海宋玲潘宏梅
Owner 山东科兴化工有限责任公司
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