By Smithers Rapra
Smithers Rapra's excessive functionality Elastomers & Polymers for Oil and gasoline 2012 convention has been built for operators, contractors, apparatus and part providers, fabric providers and examine corporations concerned with polymers and their use in oil and fuel functions to percentage their stories during this quarter. The convention represents a terrific platform to determine in regards to the most up-to-date advancements and learn into excessive functionality polymeric suggestions, and offers an discussion board to community with a high-level, foreign peer crew.
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Additional resources for High Performance Elastomers and Polymers for Oil and Gas Applications 2012
Therefore, to measure the borehole size precisely is important for swellable packer applications. The second dominate factor is the molecular volume of the fluid. Because 1 the mixing energy is scaled by k BT / , one can anticipate that the swelling pressure is also scaled by , as demonstrated through Figure 3a. Therefore, the quality of sealing depends significantly on the type of downhole fluid. For example, the packer can seal stronger with the downhole fluid to be light oil than than to be heavy oil.
As illustrated in Figure 4, the system set-up is rather simple. A cylindrical high pressure cell is fitted with two sapphire windows, one on each end. A polymer sample is secured in the pressure vessel and subjected to particular pressure and temperature conditions. The physical changes it undergoes are monitored using a camera placed in front of one of the windows and is linked to a computer running dedicated image acquisition software. A picture of the polymer specimen can be taken every 10 seconds to 100 minutes.
At 50 bar, surface change is very close to equilibrium swelling: 25%. As the pressure differential between the environment and the material increases, more gas is driven out of the elastomer. Moreover, less surrounding pressure is available, effectively promoting expansion. e. when the pressure differential between the gas concentration within the polymer and its environment decreases. As for step , this process is not instantaneous (see Figure 11). 5 minutes once atmospheric pressure is achieved to reach most of the sample contraction.