39results about How to "Meet the requirements of degreasing pretreatment" patented technology

The invention belongs to the technical field of oil field wastewater treatment and specifically relates to an efficient de-oiling agent for water generated by oil field polymer flooding. The de-oiling agent is a cationic de-oiling agent which is generated according to the steps: causing n-capric aldehyde react with epoxy bromobutane under the catalysis of a boron trifluoride diethyl etherate solution, thereby acquiring a midbody, and then reacting with pyrimidine, wherein the mole ratio of n-capric aldehyde to epoxy bromobutane to pyrimidine is 1:(0.75-1.5):(0.5-2), preferably, 1:1.2:0.9. The de-oiling agent provided by the invention has the characteristics of simple preparation process, low cost, high adaptability and excellent de-oiling effect; the de-oiling rate is 97% or above; the efficient de-oiling agent can be widely applied to the de-oiling process of the water generated by oil field polymer flooding.

The invention belongs to the technical field of oilfield sewage disposal, and particularly relates to a degreasing agent containing heterocyclic quaternary ammonium binary composite flooding sewage. The degreasing agent is prepared in the steps of performing condensation reaction on 2-furylmethylamine, formaldehyde and cyclohexanone so as to obtain Minnich alkali, and then reacting with alkyl chloride, wherein the molar ratio of the 2-furylmethylamine to the formaldehyde to the cyclohexanone to the alkyl chloride is 1:(5 to 8):(1.5 to 2):(3 to 5), and preferably, the molar ratio is 1:7:1.8:4.5. The degreasing agent has the advantages of simplicity in preparation, high adaptability and low cost, and the degreasing rate reaches up to 95% or above; subsequent crude oil dehydration cannot be influenced by separate recovered oil, and therefore, the degreasing agent can be widely applied to a degreasing process of binary composite produced flooding water.

The invention belongs to the technical field of oilfield sewage treatment, and in particular relates to a degreasing agent for oily sewage and a preparation method thereof. The base pyridine reacts to form a cationic degreaser. Wherein, the molar ratio of perfluorotriethylamine to 3-methyl bromide-5-dodecylpyridine is 1:0.8-1.4, preferably 1:1.0. The degreasing agent of the present invention has the characteristics of simple process, low cost, strong adaptability, strong temperature resistance and good degreasing effect. Some medicaments are increased by more than 50%; and the recovered oil produced by separation does not affect the subsequent dehydration of crude oil. Therefore, the present invention can be widely used in the oil removal treatment process of oily sewage in oil fields.

The invention belongs to the technical field of sewage water treatment in an oil field and particularly relates to a degreasing agent for treating oily sewage in an oil field and a preparation method of the degreasing agent. The degreasing agent is a non-ionic type degreasing agent produced by reacting ethyl benzoate with ethylene oxide, wherein the molar ratio of ethyl benzoate to ethylene oxide is 1: (2-5), preferably 1: 3. The degreasing agent has the characteristics of simple process, low cost, high adaptability, high temperature resistance and good degreasing effect and can resist the highest temperature of 250 DEG C, the degreasing rate of the oily sewage is 98% or higher and increased by 55% or higher than that of the oily sewage treated with existing chemicals, recovered oil produced through separation cannot affect following crude oil dehydration, and accordingly, the degreasing agent can be widely applied to degreasing treatment of the oily sewage in the oil field.

The invention belongs to the technical field of oil field sewage treatment, and in particular relates to a degreasing agent for oily sewage treatment in oil fields and a preparation method thereof. The degreasing agent is composed of perfluorotriethylamine and 3,7-dioctyl 1-Bromomethylnaphthalene reacts to form a cationic degreaser. Wherein, the molar ratio of perfluorotriethylamine to 3,7-dioctyl-1-bromomethylnaphthalene is 1:1-1.6, preferably 1:1.2. The degreasing agent of the present invention has the characteristics of simple process, low cost, strong adaptability, strong temperature resistance and good degreasing effect. Some medicaments are increased by more than 50%; and the recovered oil produced by separation does not affect the subsequent dehydration of crude oil. Therefore, the present invention can be widely used in the oil removal treatment process of oily sewage in oil fields.

The invention belongs to the technical field of oilfield sewage disposal, and particularly relates to a temperature-resisting and salt-resisting three-compound combination flooding produced water degreaser and a preparation method thereof. The degreaser is formed by compounding adamantine mono-quaternaries cationic surface active agent, peregal, dimethyl oleylamine sodium oxide, oleic diethanolamide and water, wherein the adamantine mono-quaternaries cationic surface active agent is a molecule having long-carbon chain alkyl non-polar group and adamantyl polar group. The degreaser is featured by simple preparation process, low cost, strong temperature resistance and salt resistance and good oil removing effect; the temperature resistance can reach 230 DEG C, the mineralization resistance can reach 230000 mg / L, and the oil removal rate can reach over 97%, which is improved by over 50% in comparison to the existed drug. Therefore, the invention can be widely applied to the oil removal technique of three-compound combination flooding produced water.

The invention belongs to the technical field of oil field sewage treatment, and particularly relates to a binary compound flooding sewage degreasing agent. Benzene methanamine, formaldehyde and cyclohexanone are subjected to condensation reaction to obtain Minnich alkali and then react with alkyl chloride to obtain the degreasing agent. The mole ratio of the benzene methanamine, the formaldehyde, the cyclohexanone to the alkyl chloride is 1:(5-10):(1.2-2):(2.5-5), and preferably 1:8:1.5:4. The degreasing agent is simple in prepare, high in adaptability, low in cost and high in degreasing rate reaching 95% or more, and recovered oil generated by separation cannot affect subsequent crude oil dehydration, so that the degreasing agent can be widely applied to the degreasing process of binary compound flooding produced water.

The invention belongs to the technical field of oil field wastewater treatment, and particularly relates to an adamantine mono-quaternary ammonium salt cationic three compound combination flooding produced water oil remover, which is prepared from compounding an adamantine mono-quaternary ammonium salt cationic surface active agent, 4A zeolite, sodium carboxymethylcellulose, alcohol polyoxyethylene hydrogenated butter (11) ether and water. The adamantine mono-quaternary ammonium salt cationic surface active agent is a molecule with a long carbon chain alkyl non-polar group and an adamantyl polar group. The oil remover provided by the invention has the characteristics of simple preparation process, low cost, high temperature resistance and salt tolerance performances and good oil removing effect, the temperature resistance achieves 240 DEG C, the salinity tolerance degree achieves 240,000mg / L, and the oil removal rate reaches 97 percent or above and is improved by not less than 50 percent compared with an existing medicament. Therefore, the adamantine mono-quaternary ammonium salt cationic three compound combination flooding produced water oil remover provided by the invention can be applied in an oil removal process of three compound combination flooding produced water.

The invention belongs to the technical field of oil field sewage treatment, and particularly relates to a heat-resistant high-effective oil removal agent for oil-containing sewage and a preparation method thereof. The oil removal agent is a cationic oil removal agent prepared by performing a reaction to perfluorotriethylamine and 3-dodecyl-5-octylbenzylbromine in an ethanol solution, wherein the molar ratio of the perfluorotriethylamine to the 3-dodecyl-5-octylbenzylbromine is 1:0.8-1.5, preferably 1:1.1. The oil removal agent has simple process, low cost and strong adaptability, has good heat resistance and oil removal effect, is 250 DEG C in maximum temperature resistance and reaches more than 97% in oil removal rate to the oil-containing sewage, which is increased by more than 50% than medicines in the prior art. In addition, recovered oil, produced through separation, has no influence on subsequent crude oil dehydration, so that the oil removal agent can be widely applied to oil removal process for oil-containing sewage in an oil field.

The invention belongs to the technical field of sewage treatment, and in particular relates to a degreasing agent used for the treatment of poly-containing sewage in oil fields and a preparation method thereof. The degreasing agent is a zwitterionic type degreasing agent, and its molecular formula is as follows: wherein n=500-5000, m=1000-34000, p=800-42000. The degreasing agent of the present invention has the characteristics of high degreasing efficiency, and the degreasing rate of the polymer-containing sewage reaches more than 99.0%, which is more than 60% higher than that of the existing agent. Therefore, it can be widely used in oil field degreasing treatment of the polymer-containing sewage In process.

The invention belongs to the technical field of oil field sewage treatment, and in particular relates to an oil remover for produced water treatment of ASP flooding. The oil remover is the amphoteric ionic type oil remover formed by first reacting p-phenylenediamine with formaldehyde and formic acid to generate an intermediate and then reacting the intermediate with the sodium chloro-dodecanoic acid. The mol ratio of the p-phenylenediamine, the formaldehyde, the formic acid to the sodium chloro-dodecanoic acid is 1: 3-8: 3-8:1-5.5, preferably 1: 4: 4.5: 1.25. The oil remover disclosed by the invention is simple in preparation, strong in adaptability and low in cost, and the oil removal rate reaches up to 97% and above; the recycled oil produced by separation cannot influence the subsequent crude oil dehydration; therefore, the oil remover can be extensively applied to the oil removal process of the ASP flooding produced water.

The invention belongs to the technical field of oil field wastewater treatment, and specifically relates to a degreaser used for treating ternary compound flooding produced water in an oil field. The degreaser is prepared by compounding an adamantine mono-quaternary cationic surface active agent, sodium percarbonate, tallow soap, sodium ethylene diamine tetracetate and water, wherein the adamantine mono-quaternary cationic surface active agent is a molecule with a long carbon chain alkyl non-polar group and an adamantyl polar group. The degreaser has the characteristics of simple preparation process, low cost, strong temperature resistance and salt tolerance, and excellent degreasing effect; the degreaser can resist the temperature up to 230 DEG C, the resistance degree of mineralization is 230000mg / L, and the oil removal rate is more than 97%, and is improved by more than 50% compared with an existing agent. Therefore, the degreaser is widely applied in the degreasing process of the ternary compound flooding produced water.

The invention belongs to the technical filed of oil field sewage treatment, and in particular relates to a high-temperature high-salt resistant thick oil thermal recovery sewage degreasing agent which is compounded from a dication surfactant, activated silica, sodium carboxymethylcellulose and water, wherein the dication surfactant is a symmetric molecule with long-carbon-chain alkyl and biquaternary ammonium salt cation polar groups. The degreasing agent provided by the invention has the characteristics of simple preparation process, low cost and good temperature and salt resistance, the mineralization resistance degree of the degreasing agent can be up to 250000mg / L, the temperature resistance of the degreasing agent is up to 250 DEG C, and a good degreasing effect can be achieved; the degreasing rate of thick oil thermal recovery sewage can be greater than 96%, and compared with that of a conventional agent, the degreasing rate of the degreasing agent is increased by more than 40%. Therefore, the degreasing agent can be widely applied to degreasing processes of thick oil thermal recovery sewage.

The invention belongs to the technical field of oilfield sewage disposal, and particularly relates to a degreaser for treating produced water of polymer flooding. The degreaser is formed by compounding Gemini surface active agent, diatomite, sodium laurylsulfate and water, wherein the Gemini surface active agent is an achiral molecule with long carbon chain alkyl group and polar group of bi-benzene sulfonate. The degreaser is simple in preparation process, low in cost, and good in salt resistance; the mineralization resistance is up to 250, 000 mg / L, and the oil removal effect is good; the oil removal rate of the produced water of polymer flooding can reach 97% or above, and is improved by 50% or more as compared with that of the existed chemicals. Therefore, the degreaser is widely applied to the oil removal technique of the produced water of polymer flooding.