Oil-phase-free triple-play slick water concentration system with effects of synergistically reducing drag, assisting drainage and promoting clay stabilization

Patent metadata

Field	Value
Publication number	US-10081753-B2
Application number	US-201715792735-A
Country	US
Kind code	B2
Filing date	Oct 24, 2017
Priority date	Oct 25, 2016
Publication date	Sep 25, 2018
Grant date	Sep 25, 2018

Abstract

An oil-phase-free triple-play slick water concentration system, is characterized by first synthesizing a water-soluble dispersion polymer drag reducer A; and then preparing an inorganic salt solution B, under mechanical agitation, of high-performance water-soluble fluorocarbon surfactant and a water-soluble of high-performance small molecule or macromolecule clay stabilizer containing quaternary ammonium ions; and finally, the aqueous inorganic salt solution B is slowly added to the drag reducer dispersion A, wherein the ratio of the aqueous inorganic salt solution B and the dispersion A is 20-80:80-20.

First claim

What is claimed is:

1. An oil-phase-free triple-play slick water concentration solution, characterized by first synthesizing a water-soluble dispersion polymer drag reducer A; and then preparing an inorganic salt solution B, under mechanical agitation, of a high-performance water-soluble fluorocarbon surfactant and a water-soluble of high-performance small molecule or macromolecule clay stabilizer containing quaternary ammonium ions; and finally, the aqueous inorganic salt solution B slowly added to the drag reducer dispersion A, wherein the ratio of aqueous inorganic salt solution B and the dispersion polymer drag reducer A is 20-80: 80-20;
wherein the dispersion polymer drag reducer A is prepared from dispersion polymerization at elevated temperature with a water-soluble monomer A1, a water-soluble dispersing agent A2, a water-soluble free radical initiator A3, an inorganic salt A4, and water A5; wherein the weight ratio of each component in the dispersion polymer drag reducer A is: water-soluble monomer A1: 5.0-20.0%; water-soluble dispersant A2: 0.1-5.0%; water-soluble radical initiator A3: 0.000001-0.100%; inorganic salt A4 15.0-40.0%; water A5: remainder;
wherein the aqueous inorganic salt solution B is formulated with a fluorocarbon surfactant B1, a water-soluble cationic quaternary ammonium clay stabilizer B2, an inorganic salt B3, and water B4; wherein the weight ratio of each component in the aqueous inorganic salt solution B is: the water-soluble fluorocarbon surfactant B1: 0.01-10.0%; the water-soluble quaternary ammonium cationic clay stabilizer B2: 0.1-20.0%; the inorganic salt B3: 10.0-50.0%; and water B4: remainder.

2. The oil-phase-free triple-play slick water concentration solution as described in claim 1 , wherein the water-soluble monomer A1 is selected from a group consisting of hydroxyethyl acrylate, hydroxyethyl methacrylate, hydroxypropyl acrylate, hydroxypropyl methacrylate, ethoxylated-2-hydroxyethyl acrylate, ethoxylated-2-hydroxyethyl methacrylate, hydroxymethyl styrene, vinyl acetate, acrylamide, dimethyl diallyl ammonium chloride, [2-(methacryloyloxy)ethyl]trimethylammonium chloride, [2-(acryloyloxy)ethyl]trimethylammonium chloride; (3-acrylamidopropyl)trimethylammonium chloride, [3-(methacryloylamino)propyl]trimethylammonium chloride, acryloxyethyldimethylbenzyl ammonium chloride, methacryloxyethyldimethylbenzyl ammonium chloride, acrylic acid, sodium acrylate, potassium acrylate, methacrylic acid, sodium methacrylate, potassium methacrylate, 2-acrylamido-2-methylpropanesulfonic acid, 2-acrylamido-2-methylpropane sulfonate sodium salt, 2-acrylamido-2-methyl propane sulfonic acid potassium salt and any combination thereof at any weight ratio.

3. The oil-phase-free triple-play slick water concentration solution as described in claim 1 , wherein the water-soluble dispersant A2 is selected from a group consisting of poly{[2-(methacryloyloxy)ethyl]trimethylammonium chloride}, poly{[2-(acryloyloxy)ethyl]trimethylammonium chloride}, poly(vinyl benzyl trimethyl ammonium chloride), poly(dimethyl diallyl ammonium chloride), hydrolyzed polyacrylamide, hydrolyzed poly(vinyl acetate) and any combination thereof at any weight ratio.

4. The oil-phase-free triple-play slick water concentration solution as described in claim 1 , wherein the water-soluble free radical initiator A3 is selected from a group consisting of ammonium persulfate, sodium persulfate, potassium persulfate, hydrogen peroxide, 2,2′-azobisisobutylamidine dihydrochloride, 2,2′-azo[2-(2-imidazolin-2-yl) propane] dihydrochloride, 4,4′-azobis(4-cyanovaleric acid) and any combination thereof at any weight ratio.

5. The oil-phase-free triple-play slick water concentration solution as described in claim 1 , wherein the inorganic salt A4 is selected from a group consisting of sodium chloride, ammonium chloride, ammonium bicarbonate, ammonium carbonate, ammonium sulfate, potassium chloride, sodium sulfate, aluminum tribromide, aluminum trichloride, aluminum nitrate, aluminum sulfate, potassium aluminum sulfate, ammonium chromate, ammonium chlorate, ammonium nitrate, ammonium sulfamate, ammonium sulfide, ammonium sulfite, ammonium perchlorate, barium nitrate, barium oxalate, cesium chloride, cesium chromate, calcium chloride, calcium chromate, calcium oxalate, copper nitrate, copper sulfate, ferrous chloride, ferric chloride, lithium bromide, lithium carbonate, lithium chloride, lithium hypochlorite, lithium chlorate, lithium perchlorate, lithium iodide, lithium nitrate, lithium sulfide, lithium sulfite, lithium sulfate, magnesium chloride, magnesium perchlorate, magnesium sulfate, manganese dichloride, manganese trichloride, potassium bromide, potassium bicarbonate, potassium bisulfite, potassium carbonate, potassium chlorate, potassium iodide, potassium nitrate, potassium iodate, potassium permanganate, potassium sulfate, potassium sulfite, potassium sulfide, rubidium bromide, rubidium chloride, rubidium iodide, rubidium nitrate, silver nitrate, sodium bicarbonate, sodium bisulfite, sodium borate, sodium borohydride, sodium bromide, sodium bromate, sodium carbonate, sodium chlorate, sodium chlorite, sodium sulfite, sodium hydrosulfide, sodium hypochlorite, sodium hypophosphite, sodium nitrate, sodium nitrite, sodium perchlorate, sodium periodate, sodium permanganate, sodium sulfide, strontium carbonate, strontium chloride, strontium nitrate, strontium titanate, stannous chloride, stannic chloride, vanadium chloride, zinc bromide, zinc carbonate, zinc chloride, zinc iodide, zinc sulfate, zinc sulfide and any combination thereof at any weight ratio.

6. The oil-phase-free triple-play slick water concentration solution as described in claim 1 , wherein the fluorocarbon monomer B1 is selected from a group consisting of pentafluorophenyl acrylate, 1,1,1,3,3,3-hexafluoro isopropyl acrylate, 1H,1H,3H-hexafluorobutyl acrylate, 2,2,2-trifluoroethyl acrylate, perfluorodecyl acrylate and any combination thereof at any weight ratio.

7. The oil-phase-free triple-play slick water concentration solution as described in claim 1 , wherein the quaternary ammonium salt B2 is selected from a group consisting of tetramethylammonium chloride, choline chloride, butyl trimethylammonium chloride, octyl trimethyl ammonium chloride, dodecyl trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, poly(dimethyl diallyl ammonium chloride) and any combination thereof at any weight ratio.

8. The oil-phase-free triple-play slick water concentration solution as described in claim 1 , wherein the inorganic salt B3 is selected from a group consisting of sodium chloride, ammonium chloride, ammonium bicarbonate, ammonium carbonate, ammonium sulfate, potassium chloride, sodium sulfate, aluminum tribromide, aluminum trichloride, aluminum nitrate, aluminum sulfate, potassium aluminum sulfate, ammonium chromate, ammonium chlorate, ammonium nitrate, ammonium sulfamate, ammonium sulfide, ammonium sulfite, ammonium perchlorate, barium nitrate, barium oxalate, cesium chloride, cesium chromate, calcium chloride, calcium chromate, calcium oxalate, copper nitrate, copper sulfate, ferrous chloride, ferric chloride, lithium bromide, lithium carbonate, lithium chloride, lithium hypochlorite, lithium chlorate, lithium perchlorate, lithium iodide, lithium nitrate, lithium sulfide, lithium sulfite, lithium sulfate, magnesium chloride, magnesium perchlorate, magnesium sulfate, manganese dichloride, manganese trichloride, potassium bromide, potassium bicarbonate, potassium bisulfite, potassium carbonate, potassium chlorate, potassium iodide, potassium nitrate, potassium iodate, potassium permanganate, potassium sulfate, potassium sulfite, potassium sulfide, rubidium bromide, rubidium chloride, rubidium iodide, rubidium nitrate, silver nitrate, sodium bicarbon

Assignees

• Univ Yangtze

Inventors

• Wu Jun
• Yu Wei-Chu

Classifications

• C09K2208/28

  Friction or drag reducing additives · CPC title

• C09K8/05 Primary

  containing inorganic compounds only, e.g. mixtures of clay and salt · CPC title

• C08F2/06

  Organic solvent · CPC title

• C08F2/20

  with the aid of macromolecular dispersing agents · CPC title

• C09K8/584 Primary

  characterised by the use of specific surfactants · CPC title