Salt-resistant suspending agent as well as preparation method and application thereof

A suspending agent and solvent technology, applied in the field of salt-resistant suspending agent and its preparation, can solve the problems of limited suspension performance, achieve the best suspension effect, good salt resistance, and quick use

Inactive Publication Date: 2020-08-18
ANTON OILFIELD SERVICES (GRP) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned prior art is to process the proppant step by step (modified coating-drying treatment), and a kind of self-suspending proppant obtained is still based on the complex pretreatment of the proppant in principle. Preparation of suspension proppant
And most of the suspension proppants have experimental effect in fresh water, and the suspension performance in high salinity brine is limited

Method used

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  • Salt-resistant suspending agent as well as preparation method and application thereof
  • Salt-resistant suspending agent as well as preparation method and application thereof
  • Salt-resistant suspending agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0060] The preparation method of above-mentioned anti-salt suspending agent, comprises the following steps:

[0061] Weigh each component by weight and stir evenly to obtain the salt-resistant suspending agent; the stirring speed is 150-250rpm / min, and the stirring time is 25-35min; the stirring speed is preferably 200rpm / min, The stirring time is preferably 30 min.

[0062] The using method of above-mentioned anti-salt suspending agent, comprises the following steps:

[0063] The above-mentioned anti-salt suspending agent, solvent and proppant are mixed, stirred evenly, and nitrogen gas is passed; the volume ratio of the anti-salt suspending agent and solvent is 0.2%-0.4%.

[0064] During specific implementation, the using method of above-mentioned anti-salt suspending agent can specifically comprise the following steps:

[0065] Add the above-mentioned anti-salt suspending agent into the solvent, continue to add proppant, stir evenly, and pass nitrogen gas;

[0066] Or ad...

Embodiment 1

[0072] 1. Preparation of salt-resistant suspending agent

[0073] 0.057g surfactant (polyoxyethylene fatty alcohol ether), 0.1g silane coupling agent (0.03g perfluoroheptadecanetrimethyloxysilane, 0.03g N-(β-aminoethyl)-γ-ammonia Propyltrimethyl(ethyl)oxysilane, 0.03g γ-glycidyl etheroxypropyltrimethoxysilane, 0.01g methylphenyldimethoxysilane), 0.1g foaming agent (0.05g terpineol, 0.05g coconut oil fatty acid sodium alanine), 0.12g foam stabilizer (0.1g aminosilanol; 0.02g polyethyleneimine, molecular weight is 20,000), 0.4g dispersant (polyvinyl alcohol, molecular weight is 10-150,000 ), 2.75g hydrophobic agent (4-hydroxyl-7-(trifluoromethyl) quinoline-3-carboxylate ethyl ester), 0.04g pH adjuster (0.04g sodium carbonate) and 20g water mix, stir well, stir The rotation speed is 200rpm / min, and the stirring time is 30min to obtain the salt-resistant suspension concentrate.

[0074] 2. Use of anti-salt suspending agent

[0075] 1) First add to slippery water

[0076] Take ...

Embodiment 2

[0080] 1. Preparation of salt-resistant suspending agent

[0081] 0.605g surfactant (0.5g imidazoline, 0.005g octadecyltrimethylammonium bromide, 0.1g sodium dioctyl succinic acid sulfonate), 0.1g silane coupling agent (0.02g γ-mercaptopropyl Trimethoxysilane + 0.02g tridecafluorooctyltriethoxysilane + 0.06g dodecyltrimethoxysilane), 0.05g foaming agent (0.02g polyethoxy fatty alcohol, 0.02g linoleic acid, 0.01g lauroyl glutamic acid), 0.2g foam stabilizer (0.1g polymeric diamine, 0.1g dimethylformamide), 0.4g dispersant (0.2g polyvinylpyrrolidone, 0.2g polyethylene glycol, molecular weight is 4000), 2g hydrophobic agent (1g perfluorooctyl quaternary ammonium iodine, 1g dioctadecyl dimethyl hydroxypropyl polyammonium chloride), 0.01g pH regulator (0.01g sodium carbonate) and 20g water mixed, Stir evenly, the stirring speed is 200rpm / min, and the stirring time is 30min, and the salt-resistant suspending agent can be obtained.

[0082] 2. Use of anti-salt suspending agent

[00...

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Abstract

The invention relates to a salt-resistant suspending agent as well as a preparation method and application thereof. The salt-resistant suspending agent is prepared from the following components in parts by volume: 0.01-2 parts of a surfactant; 0.01 to 0.5 part of a silane coupling agent; 0.05 to 0.5 part of a foaming agent; 0.1 to 3 parts of a foam stabilizer; 0.4-4 parts of a dispersing agent; 0.5 to 3 parts of a hydrophobic agent; 0.01 to 0.1 part of a pH adjusting agent; and 15-20 parts of water. The salt-resistant suspending agent provided by the invention has good salt resistance, is relatively low in viscosity (less than 5mPa. S), and can be used for realizing a relatively good suspending effect under the conditions that the mineralization degree is 300-100000mg / L, the concentrationof divalent cations (calcium and magnesium) is 10-5000mg / L and nitrogen is introduced.

Description

technical field [0001] The invention belongs to the technical field of oil and gas development, and in particular relates to a salt-resistant suspending agent capable of suspending minerals in water, a preparation method and application thereof. Background technique [0002] With the increasing enthusiasm for investment in global oil and gas resources, the oil industry has entered a new round of growth cycle, and the advancement of oil and gas development technology is the main way to alleviate people's thirst for oil resources. The development of unconventional oil and gas is the main trend of oil resource development in the future. According to the characteristics of unconventional oil reservoirs, slick water fracturing technology is mainly used at home and abroad to develop this type of oil reservoirs. Compared with the conventional melon gum fracturing technology, Slippery water fracturing fluid has technical advantages such as low viscosity, low cost, and no need for fl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/80C09K8/86E21B43/267
CPCC09K8/805C09K8/86E21B43/267
Inventor 吕永国马立飞
Owner ANTON OILFIELD SERVICES (GRP) LTD
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