Travel, Business and Petroleum Engineering

In this article, we will discuss the graph above, whose Y axis displays pressure and X axis displays distance from well.   Rw represents the radius of the well , Re represents the distance of the reservoir limit from our well, while Rs is the distance of the skin zone from the well. The picture explains about the skin zone which is located near the well, created as the result from damages of our interventions to the formation. This skin zone will give vast amount of problems, as in the picture, the pressure will alter to be smaller near the well. But, the skin itself does not always make the pressure become lower. The skin also may be engineered to make the permeability near the wellbore become even higher than the natural permeability, thus increase the pressure higher than what supposed to be naturally. That might be the method to solve the problem which may be seen from the picture, as the higher pressure near the well will be advantageous for us. But first, let’s...

Picture source: Permadi,A.K.2004.Diktat Teknik Reservoir 1.Bandung This picture shows the isopach map , a map which is used in original hydrocarbon in place calculation, namely volumetric estimation . Original hydrocarbon in place is the hydrocarbon which is stored in reservoir prior to production. By this definition, the hydrocarbon in place will not show how much volume of hydrocarbon we may obtain from the formation. Although the original hydrocarbon in place does not show how much we can gain, There is thing called Recovery Factor , a percentage range about how much hydrocarbon we might obtain typically, whose value depend on the drive mechanism of the reservoir and the reservoir fluid type. We will see why isopach map is important here, in volumetric reserve calculation. The volumetric method is a method to count the volume of hydrocarbon from geological, log, or core data . This is a good estimation method before the production data can be achieved. This method i...

Binary cycle of geothermal plant is a very fascinating geothermal engineering which utilize the geothermal energy to the extent of zero withdrawal from underground. It is a kind of method which might be dreamed by people concerning the environmental issues, such as pollution, spill, and perhaps, the answer for renewable energy . Indeed, the geothermal energy itself is a clean energy that should be developed, but one special feature of the binary cycle is that the temperature of water in the reservoir doesn’t need to be as high as usual geothermal energy. Most of the time, the power plant for geothermal energy will need steam with temperature of 200 deg C, but by using this scheme, the reservoir fluid will only need as hot as 100-200 deg C . Among other renewable energy that can be used, perhaps geothermal energy should be considered more since the efficiency and technical knowledge are simply modifications of the system of petroleum production.  Looking at the picture ...