High-strength nano water plugging agent and preparation method thereof

A water-blocking agent and high-strength technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve problems such as high shrinkage rate, high water precipitation rate, and high temperature resistance, and achieve enhanced plugging rate and improved Strength, safety-enhancing effects

Inactive Publication Date: 2020-09-01
SHANDONG BOSAITE PETROLEUM TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing water blocking agent has a high shrinkage rate after curing, is not resistant to high temperature, and has a high water separation rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A high-strength nano-water blocking agent, including the following raw materials in proportions by weight: 20 parts of nano-silicon oxide, 15 parts of nano-iron oxide, 30 parts of nano-calcium carbonate, 25 parts of nano-alumina, 20 parts of nano-cement, triethanolamine 5 parts, 10 parts of acrylamide, 3 parts of methyl methacrylate, 8 parts of cyclohexane, 2 parts of surfactant, the surfactant is sodium octadecyl sulfate C18H37-NaO4S and sodium stearate C17H35-COONa where 12 parts of flame retardant, the flame retardant is one of tributyl phosphate, tricresyl phosphate, triphenyl phosphate, chlordane anhydride, tellurium compound, aluminum hydroxide, magnesium hydroxide and borate Or two, 30 parts of deionized water.

[0029] A preparation method of high-strength nanometer water blocking agent, comprising the following steps:

[0030] 1) Put nano-silica, nano-iron oxide, nano-calcium carbonate, nano-alumina, and nano-cement into the dryer, dry out the water, and then ...

Embodiment 2

[0039] A high-strength nano-water blocking agent, including the following raw materials in proportions by weight: 25 parts of nano-silicon oxide, 20 parts of nano-iron oxide, 35 parts of nano-calcium carbonate, 28 parts of nano-alumina, 30 parts of nano-cement, triethanolamine 8 parts, 12 parts of acrylamide, 8 parts of methyl methacrylate, 10 parts of cyclohexane, 5 parts of surfactant, the surfactant is sodium octadecyl sulfate C18H37-NaO4S and sodium stearate C17H35-COONa where 20 parts of flame retardant, the flame retardant is one of tributyl phosphate, tricresyl phosphate, triphenyl phosphate, chlordane anhydride, tellurium compound, aluminum hydroxide, magnesium hydroxide and borate Or two, 40 parts of deionized water.

[0040] A preparation method of high-strength nanometer water blocking agent, comprising the following steps:

[0041] 1) Put nano-silica, nano-iron oxide, nano-calcium carbonate, nano-alumina, and nano-cement into the dryer, dry out the water, and then...

Embodiment 3

[0050] A high-strength nano water blocking agent, including the following raw materials in proportion by weight: 35 parts of nano-silicon oxide, 30 parts of nano-iron oxide, 40 parts of nano-calcium carbonate, 30 parts of nano-alumina, 20-35 parts of nano-cement, 10 parts of triethanolamine, 15 parts of acrylamide, 10 parts of methyl methacrylate, 15 parts of cyclohexane, 8 parts of surfactant, the surfactant is sodium octadecyl sulfate C18H37-NaO4S and sodium stearate C17H35- One of COONa, 30 parts of flame retardant, the flame retardant is tributyl phosphate, tricresyl phosphate, triphenyl phosphate, chlordane anhydride, tellurium compound, aluminum hydroxy, magnesium hydroxide and borate One or two, 50 parts of deionized water.

[0051] A preparation method of high-strength nanometer water blocking agent, comprising the following steps:

[0052] 1) Put nano-silica, nano-iron oxide, nano-calcium carbonate, nano-alumina, and nano-cement into the dryer, dry out the water, and...

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PUM

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Abstract

The invention discloses a high-strength nano water plugging agent. The high-strength nano water plugging agent comprises the following raw materials in parts by weight: 20 to 35 parts of nanometer silicon oxide; 15-30 parts of nano iron oxide; 30-40 parts of nano calcium carbonate; 25-30 parts of nano aluminum oxide; 20-35 parts of nano cement; 5-10 parts of triethanolamine; 10-15 parts of acrylamide; 3-10 parts of methyl methacrylate; 8-15 parts of cyclohexane; 2-8 parts of a surfactant; 12-30 parts of a flame retardant; and 30-50 parts of deionized water. The invention discloses a preparation method of the high-strength nano water plugging agent. The preparation method comprises the following step of: 1) putting nano silicon oxide, nano iron oxide, nano calcium carbonate, nano aluminum oxide and nano cement into a dryer, and drying the raw material to remove moisture. By adding acrylamide, the water plugging agent does not shrink when being cured, so that the plugging rate of the water plugging agent is increased; by adding the nano silicon oxide, nano iron oxide, nano calcium carbonate, nano aluminum oxide and nano cement, the plugging rate of the water plugging agent is furthergreatly increased, and the strength of the water plugging agent is improved.

Description

technical field [0001] The invention relates to the technical field of water blocking agents, in particular to a high-strength nano water blocking agent and a preparation method thereof. Background technique [0002] In the process of oilfield exploitation, due to channeling of water layer, coning of bottom water or intrusion of water injection and edge water, some oil wells will see water prematurely or be flooded. In order to remove or reduce water flooding, control the flow of water in the water-producing layer and change the flow direction of water in water-flooding oil, and improve the recovery rate of water-flooding oil, the chemistry used to seal the water-producing layer on the production well or injection well The treatment agent is called water blocking agent. [0003] The existing water blocking agent has a high shrinkage rate after curing, is not resistant to high temperature, and has a high water separation rate. Contents of the invention [0004] (1) Solved...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/504C09K8/506C09K21/12C09K21/02C09K21/06
CPCC09K8/5045C09K8/506C09K21/02C09K21/06C09K21/12C09K2208/10
Inventor 李江涛李海波李烁孟凡臻
Owner SHANDONG BOSAITE PETROLEUM TECH CO LTD
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