Monitoring gas hydrate formation and transport in a flow loop with acoustic emission

Cameirão, Ana; Serris, Eric; Melchuna, Aline; Herri, Jean‐Michel; Glénat, Philippe

doi:10.1016/j.jngse.2018.04.035

Cited by 10 publications

(4 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lv et al experimentally demonstrated that the accumulation of hydrate particles is the key factor that leads to blockage under water-dominant flow conditions using focused beam reflectance measurements in a high-pressure loop. Cameirao et al verified the feasibility of using acoustic emission to monitor hydrate formation, accumulation, and plugging processes by conducting flow loop experiments. Zhou et al .…”

Section: Introductionmentioning

confidence: 99%

“…Lv et al 27 experimentally demonstrated that the accumulation of hydrate particles is the key factor that leads to blockage under water-dominant flow conditions using focused beam reflectance measurements in a high-pressure loop. Cameirao et al 28 verified the feasibility of using acoustic emission to monitor hydrate formation, accumulation, and plugging processes by conducting flow loop experiments. Zhou et al 29 visually demonstrated that the CO 2 hydrate formation rate increased as the initial pressure increased and decreased with an increase in temperature, flow rate, and liquid loading via a flow loop test.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental Investigation on Hydrate Plugging Formation in Horizontal Single-Pass Gas-Dominant Flows

Zhang

Chen²,

Pan

et al. 2022

Energy Fuels

View full text Add to dashboard Cite

Hydrate plugging is a common hazard that threatens pipeline safety in the oil and gas industry. Previous research on hydrate plugging mainly focused on oil- or water-dominant flow. In this study, the formation of hydrate plugging in single-pass gas-dominant flows was analyzed in real time. The results suggest that a sudden increase in pressure drop, a sudden drop in temperature, and gas flow rate are important signals that indicate the formation of hydrate plugging. As the subcooling of hydrate formation increased, the hydrate deposition ratio increased gradually and the number of sloughing events and the time required for hydrate plugging decreased significantly. Finally, based on the research results, the formation mechanism and early warning method for hydrate plugging in single-pass gas-dominant flows were proposed. The results of this study can provide a valuable reference for the monitoring and prevention of hydrate plugging during the development of natural gas fields.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Hydrate Plugging Formation in Horizontal Single-Pass Gas-Dominant Flows

Zhang

Chen²,

Pan

et al. 2022

Energy Fuels

View full text Add to dashboard Cite

show abstract

“…Gas hydrate formation applied to flow assurance has been studied in a variety of bench- and pilot-scale experimental rigs, such as stirred cells, − high-pressure rheometers, , rocking cells, , rock-flow cell, and flow loops. − The different testing rigs are used exclusively or in combination with the purpose of providing information on the outcomes of the test that may be applicable to manage solid precipitation at field conditions. As seen in the literature mentioned above, the data obtained from different testing rigs use different methods and procedures, making the interpretation and application of the results subjective without clearly defined criteria for assessing solid transportability.…”

Section: Introductionmentioning

confidence: 99%

Flow Risk Index: A New Metric for Solid Precipitation Assessment in Flow Assurance Management Applied to Gas Hydrate Transportability

Melchuna

Zhang

et al. 2020

Energy Fuels

View full text Add to dashboard Cite

Flow assurance is a central component of oil and gas production, concerning all methods applied to ensure stable, safe, and economical transport of hydrocarbons during all stages of production. As production conditions become more critical, flow assurance issues involving solid precipitation (hydrates, wax, asphaltenes, and scale) are increasingly important, requiring data and knowledge that can be used to develop risk management strategies and guidelines to minimize their impact on production. Much of the knowledge for solid precipitation comes from experimental measurements using a myriad of experimental apparatuses. The large amount of experimental studies performed using different experimental apparatuses can produce conflicting results. Development of an analysis method able to easily compare different experimental conditions would represent great improvement, and that is the proposition of this paper. For this study, rock-flow cell experiments of gas hydrate formation in the presence of anti-agglomerants were analyzed using a new analysis method. The outcome of this method introduces the flow risk index, which is obtained from the scores given to three different categories (aggregation, wall deposition, and bedding) related to conditions leading to flowline plugging. The value obtained for the flow risk index determines the risk of observing flow disruption at a given set of conditions.

show abstract

“…Experimental results showed that the agglomeration and formation of crystals could be detected from the amplitude of the acoustic signal. 3 Wang 4 designed a detection system of hydrate plugging in gas pipeline with the pressure wave propagation method; multiple plugging could be detected, and the location as well as degree of single hydrate plugging could be achieved. Xinghua et al proposed a new detection methodology of multiple leaks in a natural gas pipeline based on observer and mixed-integer partial differential equation constrained optimization.…”

Section: Introductionmentioning

confidence: 99%

Event classification for natural gas pipeline safety monitoring based on long short-term memory network and Adam algorithm

Wang

Chu

et al. 2019

Structural Health Monitoring

View full text Add to dashboard Cite

Hydrate plugging and pipeline leak can impair the normal operation of natural gas pipeline and may lead to serious accidents. Since natural gas pipeline safety monitoring based on active acoustic excitation can detect and locate not only the two abnormal events but also normal components such as valves and pipeline elbows, recognition and classification of these events are of great importance to provide maintenance guidance for the pipeline operators and avoid false alarm. In this article, long short-term memory (LSTM) network is introduced and applied to classify detection signals of hydrate plugging, pipeline leak, and elbow. Adaptive moment estimation (Adam) algorithm is introduced and utilized to accelerate the long short-term memory network convergence in training. Experimental results demonstrate that the network with three layers and 64 units per cell performs the best. The cross-entropy loss in training is 0.0005, and classification accuracies are all 100% in training, validation, and testing which verify the validity of the long short-term memory network. Therefore, the method based on the long short-term memory network and adaptive moment estimation algorithm can work efficiently on pipeline events classification and has great guiding significance for safety assurance of natural gas transmission.

show abstract

Monitoring gas hydrate formation and transport in a flow loop with acoustic emission

Cited by 10 publications

References 6 publications

Experimental Investigation on Hydrate Plugging Formation in Horizontal Single-Pass Gas-Dominant Flows

Experimental Investigation on Hydrate Plugging Formation in Horizontal Single-Pass Gas-Dominant Flows

Flow Risk Index: A New Metric for Solid Precipitation Assessment in Flow Assurance Management Applied to Gas Hydrate Transportability

Event classification for natural gas pipeline safety monitoring based on long short-term memory network and Adam algorithm

Contact Info

Product

Resources

About