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Redesign improvement of a hydrocarbon sampling tool using robust design

The paper describes the redesign of a hydrocarbon sampler tool, which is an important tool used to obtain petroleum samples from the bottom of the reservoir, conserving its physical characteristics and carrying it to the surface, in order to characterize the problematic of wax and asphaltene precipitation over the production pipelines. The aforementioned phenomena is highly non-linear, so slight variations in temperature and pressure can spark irreversible changes of the fluid properties and produce diminished performance in the exploitation of the reservoir. The storage container that is a part of design is outlined. The container is used to obtain and keep a volume of hydrocarbon in a single phase and is a part of the hydrocarbon sampler tool, so laboratory studies can be conducted to assess correctly the reservoir condition. The new design must be capable of maintaining the pressure and temperature conditions of the sample through the sampling and analysis process. The storage container includes an automatic electric heater and temperature sensors installed on the container to restrain pressure variations through the control of the temperature. A reduction of the energy consume was achieved, improving up to 13% of the heat loss. For this stage of the project robust design was used, because it is an efficient and systematic methodology that applies static and dynamic experimental design to improve products and manufacture processes, and its focus is to make an output response insensitive to or robust to difficult to control variation (noise).