Air-suspended sand agent, air-suspended sand and air-suspended sand agent, preparation method and application of air-suspended sand
A technology of air suspension and production method, which is applied in the direction of chemical instruments and methods, earthwork drilling, drilling composition, etc., which can solve the problems of increasing construction difficulty, complex preparation and high cost, and achieve ideal sanding effect and good environmental benefits , good suspension effect
Active Publication Date: 2021-01-19
北京培康佳业技术发展有限公司
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Problems solved by technology
[0008] CN106832145A is to solidify a hydrophobic and aerophilic coating on the outside of the aggregate particles to absorb nitrogen, and to improve the self-suspension ability by forming tiny bubbles in slippery water. The hydrophobic and aerophilic emulsion is composed of fluoropolymer monomers, polymer binders , silane coupling agent and surfactant, and achieved a good suspending effect, but this self-suspending proppant needs to undergo cross-linking reaction, the preparation is complicated and costly, and in practical application, it needs to be in the slick water fracturing process Injection of 10-20% nitrogen in the middle increases the difficulty of construction
Method used
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Embodiment 1
[0030] Take 9 parts of lauryl dimethyl betaine by weight and add it to the reaction kettle, add 65 parts of industrial grade absolute ethanol and 10 parts of industrial grade ethylene glycol under stirring, and stir evenly at normal temperature to obtain Colorless transparent liquid, obtains the air-suspended sand preparation of the present embodiment.
Embodiment 2
[0032] Take 12 parts of lauryl dimethyl betaine by weight and add it to the reaction kettle, add 70 parts of industrial grade absolute ethanol and 18 parts of industrial grade ethylene glycol under stirring, and stir evenly at normal temperature to obtain Colorless transparent liquid, obtains the air-suspended sand preparation of the present embodiment.
Embodiment 3
[0034] Take 15 parts of dodecyl dimethyl betaine by weight and add it to the reaction kettle, add 85 parts of industrial grade anhydrous ethanol and 20 parts of industrial grade ethylene glycol under stirring, and stir evenly at normal temperature to obtain Colorless transparent liquid, obtains the air-suspended sand preparation of the present embodiment.
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Abstract
The invention discloses an air-suspended sand agent for surface modification of quartz sand used for fracturing in an oil field, an air-suspended sand and its production method and application. Described air-suspension sand agent is alkyl dimethyl betaine, ethylene glycol and dehydrated alcohol, wherein the molecular formula of the alkyl dimethyl betaine is C n h 2n+1 N + (CH 3 ) 2 CH 2 COO ‑ , where n=12‑16. Mix alkyl dimethylamine betaine, ethylene glycol and absolute ethanol evenly in proportion to prepare air-suspension sand agent; add air-suspension sand agent to quartz sand used as proppant, mix evenly to obtain air-suspension sand agent sand. The application of the air-suspended sand in oil and gas field fracturing stimulation. Quartz sand proppant migrates farther and distributes wider, which can effectively improve the migration and distribution of quartz sand proppant. The preparation method is simple to operate; the components do not contain harmful components to the environment, and the environmental benefit is good.
Description
technical field [0001] The invention relates to the technical field of fracturing stimulation in oil and gas fields, and in particular to FloatX, an air-suspended sand agent for oil field fracturing, which can realize the suspension of quartz sand by modifying the surface of quartz sand so that it can generate and absorb air bubbles. Background technique [0002] With the development of oil and gas exploration and development, hydraulic sand fracturing technology is inseparable from the increase of oil and gas field production. By injecting proppant into the fractures opened in the formation, multiple long fillings with certain conductivity can be formed in the formation. sand fractures, and finally realize oil and gas production increase. Extended-reach horizontal wells, densely cut segments, and high sand loading intensity (7.5t / m) are new trends in oil and gas field development, requiring higher sand suspension and sand-carrying capabilities. [0003] Compared with the t...
Claims
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IPC IPC(8): C09K8/80
CPCC09K8/80
Inventor 姚少全李君勋
Owner 北京培康佳业技术发展有限公司