... Abstract High porosity, high saturation natural gas hydrate-filled sands are of interest as potential natural gas reservoirs. We describe and compare the two most explored high saturation hydrate-bearing reservoir sands in the northern Gulf of Mexico, the Sigsbee sand in Green Canyon block 955...

... Abstract We performed uniaxial compression tests on specimens from a sandy silt reservoir with a hydrate saturation greater than 80% and on specimens of the same reservoir without hydrate present. During loading, the hydrate-bearing reservoir samples are stiffer than equivalent samples without...

... Abstract Gas hydrates and shallow gas are common hazards encountered during drilling. They also are important components of the global carbon cycle and a potential energy resource. Predicting the occurrence of free gas and hydrates, particularly highly concentrated accumulations, is therefore...

... Abstract Gas Hydrates represent vast energy resources and are considered to be a potential clean fuel of the future. Under the National Gas Hydrate Program (NGHP), DGH and ONGC have been carrying out research work for exploration and development of the gas hydrates in Indian Offshore. Based...

... Abstracts The results of the on-site geological exploration of Block XX-1 in the South China Sea indicate the existence of a geological composition of deep-water shallow gas overlying hydrate layer. Prior studies have not sufficiently considered the impact of shallow gas on the overlying...

... Abstract Gas hydrates are increasingly acknowledged as a potential future natural gas resource, sparking extensive global research into their geological characteristics and the technology needed for production. This paper offers a comprehensive review of gas hydrate-related research initiatives...

... Abstract Deepwater natural gas hydrates have attracted widespread attention as a clean energy resource, but their decomposition process will significantly change the physical and mechanical properties of the formation, posing a threat to the stability of the casing during drilling. Deepwater...

... Abstract During depressurization production of natural gas hydrate, the reformation of hydrate is likely to occur in the reservoir, hindering the efficient development of hydrate. Previous studies on the reformation of hydrate in the process of natural gas hydrate production were mainly focused...

... Abstract In the process of extracting naturally-occurring oceanic gas hydrates, the dissociation of hydrates can cause a reduction in soil strength. This reduction has the potential to trigger slope failure and submarine landslides, which present a catastrophic threat to offshore facilities...

... Abstract Radial wells are recognized as a promising type of well for achieving the commercial development of natural gas hydrate (NGH). Previous research has confirmed the positive impact of radial wells on enhancing the efficiency of NGH exploitation. However, the impact of radial wells...

... of solidification such as dry ice and CO 2 hydrate via process simulation and lab scale experiments. The results indicated the risk of dry ice is affected from circumstance and phase of CO 2 . The CO 2 hydrate risk is assessed by conducting a matching experimental data of batch reactor with experimental data...

... In normal operation, a gas condensate field can be operated in pressure and temperature conditions where hydrates are stable. To mitigate the formation and deposition of hydrates, Mono Ethylene Glycol (MEG) is injected in the subsea flowline at high concentration (30 to 60% vol. versus water...

... Abstract Flow assurance problems usually impede fluid transfer across process facilities especially in low-temperature regions, where oil and gas produced contain more wax as fields mature, and hydrates form at certain temperatures and pressures in facilities transporting acidic gases produced...

... for a designated number of iterations (epochs) or until ℒ if minimized below some predetermined value. There has been demonstrated success in the application of DNNs to hydrate plugging. Qin et al. developed a DNN for this problem [6] trained on data from two laboratory-scale flowloops. The network showed...

... Abstract South China Sea hydrate reservoirs, mostly weakly cemented silty sandstones, are prone to landslides during extraction. Prior studies have inadequately considered factors such as dynamic decomposition of hydrates during depressurization, and the impacts on the reservoir's geomechanical...

... subsea separation coupled with mitigation of flow assurance concerns, primarily hydrates. The performance of the PDG unit was predicted by linking the field data with PDG test data. The test was conducted on a 6" flow loop with 6" PDG prototype with pilot scale unit, covering the operational pressure...

... assurance aspects that are beyond the standard welltest playbook. Several failures and operational issues related to flow assurance such as the plugging of pipelines and/or tubing by wax or hydrates have hindered the interpretability of data, compromised well test objectives, significantly increased...

... Abstract Given the challenges posed by CO 2 's distinct thermophysical properties (i.e., its expansive behavior and attendant risks of causing hydrate, dry ice, and/or water ice formation), a dynamic multiphase flow simulator is employed to evaluate the effectiveness and suitability of using...

... Abstract Hydrates are one of the most serious issues in deepwater production systems. Remediation operations are usually time-consuming and expensive, especially if the low-cost methods using the existing infrastructure e.g. injecting thermodynamic hydrate inhibitor (THI) at the vicinity...

... Abstract Wellbore integrity in a gas hydrate bearing formation during drilling and production is a great challenge in the energy industry since a complex thermal-hydraulic-mechanical interaction with decomposed solid hydrate process is involved. A wellbore temperature increase...