Oil & Gas Transport

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Hytech provides pipeline design and assessment services for different transport requirements (gas, crude oil, water, and multiphase

transmission). Our company employs a team of specialized professionals trained in the use of the multiphase transient simulator OLGA, which is the standard tool used by major companies in offshore and onshore large pipeline projects.

The Flow Assurance discipline applies to single and multiphase pipelines and helps define the optimal parameters and design to ensure adequate functioning in stable operation as well as during transient conditions (start-up, shutdown, pigging, etc.) along the pipeline lifetime. This allows the transient evaluation of several scenarios, such as:

• Visualization, conceptual selection and design of the appropriate flow system.

• Flow system evolution. Definition of safe operating envelopes.

• Flow Assurance Philosophy and Strategy.

• Prediction and control of Hydrates and Paraffins formation/deposition.

• Corrosion studies (Conventional, Top Of Line). Corrosion inhibitor injection studies.

• Slugs Prediction. Sizing of new Slug Catchers.

• Capacity verification and control loops of existing Slug Catchers.

• Evaluation of optimal pipeline diameter to avoid flooding or generation of big slugs during a variety of operation modes.

• Pressurization and Glycol injection schemes to avoid hydrate formation during initial startup with surroundings still cold.

• Alternatives for pigging procedures with limited slug catching capacity.

• Scheduled and Emergency Shutdown.

• Packing and despressuring.

• Restart with packed line and flooded valleys

• Slug generation during rampups. Maximum rampup speed (ramp / staggered) to prevent Slug Catcher flooding.

• Cool down and hydrate risk after shutdown.

• Determination of “No-touch time” in order to perform a safe hot restart.