ماهنامه نفت، گاز و انرژی
سال هفتم شماره 44 (دی 1396)

As we know, there are two ways to combat pollution in the atmosphere. One of the best ways to reduce emissions from sources pollution and other sources of emissions control. Nanotechnology can help to remove the pollution source. Economic methods for the purification of this material, using a combination of micro filtration systems - is a nano-filtration. The system of micro filtration to remove suspended particles such as oil and lubricants and cleaners used to remove nano filtration. Therefore these materials have been developed to remove contaminants that are metallic and organic compounds. It seems that this branch of nano science to eliminate organic pollutants, to remove salts and heavy metals is very good.

The mud loss of the largest and most costly problems in the drilling operation. So that it can be 10 to 20 percent of the cost of a well to be included. As a result of this problem, caused many problems, including lack of access to full information geological formation, wellbore instability, blowout, pipe sticking drilling and production losses in layers. One way to avoid the loss, in the event of loss prevention materials are inert, cement plug is used. Cement plugs into the holes and gaps in the zone of influence of the loss and loss due to the obstruction. In this paper, the design of a plug of cement with the use of nano-silica as accelerators are discussed to minimize thickening time and at the same time the highest strength that is where the least amount of time possible circulation losses avoided and also loss wellbore stability and be part of it. The overall objective of adding cement accelerators, reducing time is woc. Among the most common and traditional substances that are used to accelerate thickening time of cement, mineral salts such as CaCl2 that the accelerator can have a negative effect on the permeability and strength of cement. However, the nano-silica can be used as a accelerator in a cement slurry design, its particles due to the nanoscale permeability reduces the resistance and strength of cement to increase and better alternative to the accelerator salt. In this paper two tests on two samples is done the first instance, the cement used in applications in consolidate and cement plug in Azar oil field and Dalpari location gas field, and the second one under the same programs with the difference that, in the nano-silica is used. Laboratory results of the two samples were compared and checked.

Natural sour gas stream containing hydrogen and carbon dioxide. Gas separation processes, including acid gas sweetening process using chemical solvents. The study using simulation software Aspen plus absorption tower is simulated gas sweetening unit and impact of two amine MDEA and DIPA and amine temperature on mole fraction of sweet gas has been checked. Result have shown that the simulation error is less than 5 percent. Select the appropriate amine should be done due to the purpose of separation and reduce the temperature of the incoming amine also reduces the mole fraction and flow rate of methane in the output.