摘要:
Process for the preparation of a water-in-oil or oil-in-water nanoemulsion wherein the dispersed phase is distributed in the dispersing phase in the form of droplets having a diameter ranging from 1 to 500 nm, comprising: 1) the preparation of a homogeneous water/oil blend (I) characterized by an interface tension lower than 1 mN/m, comprising water in an amount of 30 to 70% by weight, at least two surface-active agents having a different HLB, selected from non-ionic, anionic, polymeric surface-active agents, said surface-active agents being present in such a quantity as to make the blend homogeneous; 2) the dilution of the blend (I) in a dispersing phase consisting of oil or water with the addition of a surface-active agent, selected from non-ionic, anionic, polymeric surface-active agents, the quantity of the dispersing phase and surface--active agent being such as to obtain a nanoemulsion having a HLB different from that of the blend (I).
摘要:
The invention relates to the use of quaternary polyamines having formula (I) for the recovery of oil from reservoirs formula (I), wherein n>=1 R1 represents H, CH3, CH2CH3, CnH2n+1 R2 represents H2CHOHCH2, CH2, CH2CH═CH2 R3 represents CH3, CH2CH3, CnH2n+1 R4 represents CH2, CH2CH═CH2 when R2 and R4 are allyl group, they can jointly form aliphatic cyclic structures, the ratio between the carbon atoms and nitrogen atoms (C/N) ranges from 2 to 30.
摘要翻译:本发明涉及具有式(I)的四元多胺用于从储存器式(I)中回收油的用途,其中n> = 1 R 1表示H,CH 3,CH 2 CH 3,C n H 2n + 1 R 2表示H 2 CHOHCH 2,CH 2,CH 2 CH = 当R 2和R 4为烯丙基时,它们可以共同形成脂族环状结构,碳原子和氮原子之间的比例(C / N)为2,其中R 3表示CH 3,CH 2 CH 3,C n H 2n + 1,R 4表示CH 2,CH 2 CH = CH 2 到30。
摘要:
Process for the disposal of sulfur which comprises melting the sulfur, optionally in the presence of hydrogen sulfide, and injecting the molten sulfur into geological structures having a temperature ranging from 90 to 160° C.
摘要:
For reducing the restart pressure of streams selected from waxy crude oils, water-in-crude emulsions and dispersions of hydrocarbon hydrates, at least partially structured, a mechanic disturbance is applied, in flow-stop conditions, on the streams. The temperatures are lower than the WAT (Wax Appearance Temperature) for the waxy crude oils and water-in-crude emulsions. The temperatures are also lower than the forming temperatures of the hydrates and pressures higher than the forming pressure of the hydrates, for the dispersions of hydrocarbon hydrates.
摘要:
Process for reducing the adsorption of hydrosoluble polymers onto rock matrix, which comprises putting the rock matrix in contact with an aqueous solution of polymers containing sacrificial agents, preferably selected from ionic and non-ionic oligomeric surface-active agents. In the preferred embodiment the surface-active agents are non-ionic.
摘要:
Provided is a device which can be used to create cavities within the growing media of plant containers to prevent or mitigate against the effects of too much liquid being applied to the growing media. These cavities generally fall into two categories: exfiltration cavities or venting cavities. The exfiltration cavities created by the device allow for the exfiltration of liquid from the growing media of a plant container into the cavities. The venting cavities created by the device provide a space for airflow between the exfiltration cavities and airspace above the growing media in the planting container, so as to facilitate evaporation of the liquid collected in the exfiltration cavity. Also provided is a method for mechanical removal of liquid from the cavities created by the device.
摘要:
A process for reducing the restart pressure of streams selected from waxy crude oils, water-in-crude emulsions and dispersions of hydrocarbon hydrates, at least partially structured. A mechanic disturbance is applied, in flow-stop conditions, on the streams, having: temperatures lower than the WAT (Wax Appearance Temperature) for the waxy crude oils and water-in-crude emulsions; temperatures lower than the forming temperatures of the hydrates and pressures higher than the forming pressure of the hydrates, for the dispersions of hydrocarbon hydrates.
摘要:
Process for the production of sulfur, obtained in pure form, and possibly easily disposable even at ambient temperature, starting from hydrogen sulphide contained in natural gas, which includes: a) oxidizing a portion of hydrogen sulphide to sulfur dioxide; b) dissolving in water the sulfur dioxide obtained in step (a); c) carrying out the reaction (I): 2H2S+SO2→3S+2H2O (I) making the remaining hydrogen sulphide to react with the solution prepared in step (b); and d) using the thus obtained sulfur suspension for the production sulfur or, alternatively, to use it for the disposal of the sulfur itself in a site reserved for such purpose.
摘要翻译:即使在环境温度下也可以容易地一次性地获得硫的方法,其从天然气中所含的硫化氢开始,其包括:a)将一部分硫化氢氧化成二氧化硫; b)将在步骤(a)中获得的二氧化硫溶于水; c)进行反应(I):2H 2 S + SO 2→3S + 2H 2 O(I),使剩余的硫化氢与步骤(b)中制备的溶液反应; 和d)使用由此获得的硫悬浮液来生产硫磺,或者用于将硫自身处置在为此目的而保留的场所中。
摘要:
Process for the preparation of a water-in-oil or oil-in-water nanoemulsion wherein the dispersed phase is distributed in the dispersing phase in the form of droplets having a diameter ranging from 1 to 500 nm, comprising: 1) the preparation of a homogeneous water/oil blend (I) characterized by an interface tension lower than 1 mN/m, comprising water in an amount of 30 to 70% by weight, at least two surface-active agents having a different HLB, selected from non-ionic, anionic, polymeric surface-active agents, said surface-active agents being present in such a quantity as to make the blend homogeneous; 2) the dilution of the blend (I) in a dispersing phase consisting of oil or water with the addition of a surface-active agent, selected from non-ionic, anionic, polymeric surface-active agents, the quantity of the dispersing phase and surface-active agent being such as to obtain a nanoemulsion having a HLB different from that of the blend (I).
摘要:
A process is described for reducing the production of water in oil wells which comprises the injection into the formation around the well of an aqueous solution of one or more polymers selected from those having general formula (I), wherein: n ranges from 0.70 to 0.98; m ranges from 0.30 to 0.02; n+m=1; X1 and X2, the same or different, are selected from H and CH3; R1, R2, R3, the same or different, are selected from C1–C10 monofunctional hydrocarbyl groups; and x ranges from 2 to 5.
摘要翻译:描述了一种用于减少油井中的水的产生的方法,其包括将一种或多种选自具有通式(I)的聚合物的一种或多种聚合物的水溶液注入井内的地层中,其中n在0.70至0.98范围内 ; m范围为0.30〜0.02; n + m = 1; X 1和X 2相同或不同,选自H和CH 3; R 1,R 2,R 3,R 3,R 3,R 3,R 3,R 3,R 3相同或不同,选自C 1 -C 3, 单官能烃基; x的范围为2到5。