Investigations in Separator Modelling & Performance in ADNOC, Utilizing Equation of State (EOS) Fluid Models

Abstract

The objective of this paper is to share the results of investigations carried out in the area of separator modelling and performance within the context of ADNOC's Integrated Capacity Model (ICM). Field production from wells is collected via multiple sets of remote degassing stations (RDS) or towers to a centralized separation facility where single or multiple separators allow the separation of the lighter components (contributing to a gas stream) from the heavy components (contributing to the oil stream). We share the investigation results on the following areas related to this separation: Range of pressure and Temperature of 1st stage separators Range of feed (field/asset) compositions & contributing well compositions Effect of separation performance of streams ExclusiveIn presence of other streams Effectiveness of using pseudo k-values in separation performance compared to full EOS separation Use of EOS based approach to production back allocation Comparison of GOR correction methods The primary method used is the performing of simulations with an Equation of State (EOS) model. For the purpose of this study, the single EOS model developed for ADNOC's Integrated Capacity Model (ICM) is used. This model has 15 components and their associated properties. The relative molar content of each component (i.e. the composition of a stream) determines its behavior. The difference in behavior is due to the difference in compositions of streams originating from the various fields/reservoirs/wells. An off-the-shelf software package dedicated to fluid modelling with an EOS is used, with automation, to efficiently execute the EOS computations for thousands of streams. This type of automation is necessary for the purpose of this investigation. The paper depicts the range of compositions from different assets/fields and shows the impact on the range when the streams are aggregated. The paper also shows result of investigation on the efficiency and separation of components in the gas or oil stream if a single well is routed through a separator and when the same well is commingled with other wells. The use of k-values for the separation of streams and their accuracy is also demonstrated in this paper. Novel/Additive Information: A methodological investigation into the performance of separators and the use of k-values in the use of EOS-based production allocation solutions is presented. Secondly, the difference in well stream separation performance when done individually and when in combination with other well streams is computed.

Analysis of the Impact of Modern Livestock Technology Implementation, Resource Availability, and Marketing Strategy on the Sustainability of Chicken Farming Business in Central Java

“…Bootstrapping: To estimate the standard errors and confidence intervals of the path coefficients, bootstrapping will be applied. Model Fit: Several fit indices will be utilized to assess the overall fit of the structural model [20]- [23].…”