Coordinated Control of separation processes for better produced water treatment
Author
Panev, Kiril Vasilev
Term
4. term
Education
Publication year
2016
Submitted on
2016-06-09
Abstract
Dette projekt undersøger to separationsprocesser i topside olie- og gasproduktion med fokus på styring og automatisering. Den første proces adskiller en flerfaset strømning i gas, olie og vand ved hjælp af en tyngdekraftsseparator. Der opstilles en model af tyngdekraftsseparatoren, som bruges til at designe og vurdere styringen. Den anden proces filtrerer det producerede vand i en hydrocyklon (en enhed, der bruger centrifugalkræfter). Her estimeres en model af hydrocyklonen til styringsformål. De to modeller kobles for at undersøge koordineret styring af de to separationsprocesser med henblik på bedre rensning af produceret vand. En flerindgangs/flerudgangs lineær kvadratisk regulator (MIMO LQR) defineres og simuleres. Yderligere undersøgelser og implementering overvejes.
This project examines two separation steps used in topside oil and gas production, with a focus on control and automation. The first step separates a multiphase flow into gas, oil, and water using a gravity separator. A model of the gravity separator is developed to support control design and evaluation. The second step filters the produced water using a hydrocyclone (a device that uses centrifugal forces). A hydrocyclone model is estimated for control purposes. The two models are combined to study coordinated control of the separation processes to improve produced water treatment. A Multi-Input Multi-Output Linear Quadratic Regulator (MIMO LQR) is defined and simulated. Further investigation and implementation are considered.
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