NGSTech Conference January 17-18, 2018 LNG Sampling at Low Pressure

NGSTech Conference LNG Sampling at Low Pressure 2

The 6th biennial NGSTech Conference is presented in association with Natural Gas Sampling Technology, Inc., an emerging non-profit industry association dedicated to providing educational opportunities to the energy industry in the science and advancement of hydrocarbon sampling.  The NGSTech Conference is an educational and informational forum in which energy industry professionals share the latest in hydrocarbon sampling research, technological developments, processes, and applications.  The conference will feature presentations and discussions related to the sampling and analysis of natural gas, gas condensate, liquefied natural gas and petroleum liquids, as well as other important associated topics. Manufacturers of equipment, as well as service specialists will be on hand to exhibit the systems and services that can enable participants to achieve their sampling and analytical objectives.  NGSTech is a unique opportunity for energy industry professionals to participate in the world’s first, one-of-a-kind petroleum sampling and technology conference.v

NGSTech Conference LNG Sampling at Low Pressure

Hans-Peter Visser, Analytical Solutions and Products B.V.
A typical LNG mixture start to boil at -260°F (-162°C) at atmospheric pressure. For application like Ship-to-Ship (StS) transfer of LNG typical pressures are below 1 barg. This means that LNG nearly start to boil in the LNG transfer line.

For custody transfer the energy content should be determined with the lowest uncertainty possible. According to latest standards like G.I.I.G.N.L. version 5.00 and ISO 8943: 2007, LNG is sampled from the transfer line and vaporized in order to measure the gas mixture by a Gas Chromatograph (GC) or a Calorific Value Determine Device (CVDD). Based on the measurement the calorific value and other properties are determined.

This paper and presentation describe the challenges and solutions to sample and vaporize LNG at low pressures. Extensive tests and experiments have been done. During the tests videos were made, showing the low pressure LNG behaviour at the tip of the probe where the LNG for sampling was taken.

Based on the low pressure LNG observations via a stethoscope, the measuring results could be better explained/interpreted.

NGSTech Conference LNG Sampling location

Houston Marriott Westchase
2900 Briarpark Dr.
Houston, Texas 77042

Keep your head cool with our LNG products & services

Service engineer Vinicius Rossetti with LNG Sampler

LNG vaporizing, sampling, and analytical products

Time is money! Every hour an LNG carrier can sail away earlier from a FSRU will have a significant positive financial impact. So it is important that a FSRU can always operate at its maximum flow rate to minimize transfer time.

ASaP Phazer LNG Probe-Vaporizer

LNG probe-vaporizer for accurate LNG samples – The Phazer

The Phazer is the only cryogenic LNG probe-vaporizer that provides verifiably accurate and representative LNG samples from as low as 0,5 barg.

ASaP LNG Sampler - LNG Sampling System doors open

LNG sampling with the ASaP LNG Sampler System

ASaP engineers and manufactures LNG analysis and LNG sampling systems with a wide variety of gas analyzing and LNG sampling options and solutions.

ASaP AIM predictive maintenance software rugged tablet

Predictive maintenance software & analyzer data collection – AIM

AIM is easy to use predictive maintenance software and centralizes analyzer data collection for operators and reliability engineers similar to AMADAS to get insight into their measurement and analyzer equipment.

Natural gas analyzer ABB NGC8206 chromatograph

LNG analysis for LNG energy determination

The cycle time of traditional GC analyzers that are used for LNG analysis and energy determination is several minutes.