Optimization of Multiphase Pumping Stations Based on Reliability Analysis and Monitoring of Process Conditions at Huyapari Field-PetroPiar, Orinoco Belt

摘要

The Huyapari field currently produces 160,000 BPD of 8.5°API extra heavy oil in cold production method.Blending naphtha of up to 60°API to obtain finally diluted crude of about 15.2°API. Twin-screw multiphase pumps(MPP)are responsible for transporting the fluids from the well pads to the“Centro Operacional Bare”(COB),where the produced fluids are treated.The production is in charge of 21 pumps geographically distributed in 10 multiphase pumping stations,strategically located in the field. In order to keep surface pressures controlled as low as possible and therefore contribute to achieve production commitments and business plan in the JV PetroPiar,an integral monitoring methodology has been designed.This work helps to evaluate and provide real-time recommendations for reaching optimum operating conditions contributing to maximize daily production as well as identifying opportunities for reliability improvements. This monitoring program is linked to a reliability study conducted on a quarterly basis,which contributes to the execution of the work plans of the departments supporting the operation,with focus on reducing Lost Production Opportunity(LPO)with grater effectiveness. The continuous evaluation and optimization of the performance of the MPP stations in real time according to operational changes(surface pressure,diluent injection rates,diluent quality,water cuts,and gas production rates,among others)allow for improving the reliability of this equipment and help to meet the production plan,which is currently over 96%. This work also describes the results from the failure analysis conducted in the last three years to identify the main factors affecting the LPO.Additionally,the methodology to continue with the operational performance of each MPP station and its influence in the production system of the whole field is included.