Gas hydrates are cage-like structures of water molecules surrounding molecules of gas, primarily methane. They form under conditions of low temperature and high pressure. It is estimated that up to 270 million trillion cubic feet of natural gas could exist trapped in gas hydrate deposits globally. There are several methods for producing natural gas from hydrates, including depressurization, thermal stimulation, and chemical inhibition. Significant challenges remain regarding the economic and environmentally-safe production of gas from hydrate deposits.
A presentation illustrating the phenomena of NGH including a brief introduction about the NGH , the conditions required for their initiation , different structures , suitable environments , different detection methods , major challenges , extraction methods , importance and distribution of reserves worldwide.
It is a power point presentation on Gas Hydrates.
It consist of Energy Scenario, Basic Definition, methodology,
Methane Hydrate formation condition.
Future Scope
A presentation illustrating the phenomena of NGH including a brief introduction about the NGH , the conditions required for their initiation , different structures , suitable environments , different detection methods , major challenges , extraction methods , importance and distribution of reserves worldwide.
It is a power point presentation on Gas Hydrates.
It consist of Energy Scenario, Basic Definition, methodology,
Methane Hydrate formation condition.
Future Scope
Introduction to Gas Transportation and Storage technology including pipeline, CNG, LNG, GTL, GTW, methane hydrate, and the importance of gas sales agreement in a gas value chain.
Clathrates ; Hydrate ; Gas Hydrate; Hydrates Fundamentals; Typical Hydrate forming Gases; STRUCTURAL GEOMETRIES OF GAS HYDRATES; CONCERN ASSOCIATED WITH GAS HYDRATE; TYPES OF METHANE HYDRATE DEPOSITS; The stability of methane hydrate in nature; GAS HYDRATE PETROLEUM SYSTEM:; Gas hydrate stability conditions; WORLD GAS HYDRATE RESOURCE; Resource Pyramid for Gas Hydrates; Do We have the Technology to Extract Methane from Gas Hydrates?; DEPOSITIONAL ENVIRONMENT OF METHANE HYDRATE ; Where are Gas Hydrates Located?; PRODUCTION FROM HYDRATES; Gas Production Methods form Hydrates’ Thermal Stimulation; Depressurization; Inhibitor Injection; CO2 Sequestration; THE FUTURE OF METHANE HYDRATES
What is a Typical Unconventional Gas Reservoir?
Compare between Conventional vs. Unconventional Reservoir
What are Unconventional Resources…!
Why Do We Need Unconventional Reservoirs ?
Unconventional Gas Reservoir; Unconventional Resources; Worldwide Unconventional Gas Production; Types of Natural Gas Resource; The Resource Triangle
COAL BED METHANE (CBM); Coal Seam Gas (CSG), or Coal-mine Methane (CMM); What and why CBM?; How do we estimate the amount of methane gas which will come from a region underlain by coal? ; Benefits of CBM ; Coal seams as aquifers; CBM product water ; What is saline water and why is it considered saline?; What is sodic water and why is it considered sodic? ; Irrigation of crops with CBM water; Current management practices for disposal of CBM product water
Le 03 Natural Gas (NG) Transportation and DistributionNsulangi Paul
This module describes means of transportation and distribution of natural gas from production area to the end user or consumers. The module analyzes various methods such as pipeline, liquefied natural gas (LNG), compressed natural gas (CNG), gas to liquid fuel (GtL), gas to wire (GtW) as well as gas to hydrate (GtH).
About Gas Hydrates, Indian Scenario, Worldwide Occurrence, Phase Diagram for the presence of Gas Hydrates in Permafrost region and Marine Environment, Techniques for Extraction, Problems and Challenges, Major Players for Production of Gas Hydrates, Policy's for Production and Future of Gas Hydrates.
Some information regarding the basics and formation of petroleum and its by products and also its exploration methods.. also in new technology of discovery is included
Gas hydrate
To prepare natural gas for sale, its undesirable components (water, H2S and CO2) must be removed. Most natural gas contains substantial amounts of water vapor due to the presence of connate water in the reservoir rock. At reservoir pressure and temperature, gas is saturated with water vapor
Introduction to Gas Transportation and Storage technology including pipeline, CNG, LNG, GTL, GTW, methane hydrate, and the importance of gas sales agreement in a gas value chain.
Clathrates ; Hydrate ; Gas Hydrate; Hydrates Fundamentals; Typical Hydrate forming Gases; STRUCTURAL GEOMETRIES OF GAS HYDRATES; CONCERN ASSOCIATED WITH GAS HYDRATE; TYPES OF METHANE HYDRATE DEPOSITS; The stability of methane hydrate in nature; GAS HYDRATE PETROLEUM SYSTEM:; Gas hydrate stability conditions; WORLD GAS HYDRATE RESOURCE; Resource Pyramid for Gas Hydrates; Do We have the Technology to Extract Methane from Gas Hydrates?; DEPOSITIONAL ENVIRONMENT OF METHANE HYDRATE ; Where are Gas Hydrates Located?; PRODUCTION FROM HYDRATES; Gas Production Methods form Hydrates’ Thermal Stimulation; Depressurization; Inhibitor Injection; CO2 Sequestration; THE FUTURE OF METHANE HYDRATES
What is a Typical Unconventional Gas Reservoir?
Compare between Conventional vs. Unconventional Reservoir
What are Unconventional Resources…!
Why Do We Need Unconventional Reservoirs ?
Unconventional Gas Reservoir; Unconventional Resources; Worldwide Unconventional Gas Production; Types of Natural Gas Resource; The Resource Triangle
COAL BED METHANE (CBM); Coal Seam Gas (CSG), or Coal-mine Methane (CMM); What and why CBM?; How do we estimate the amount of methane gas which will come from a region underlain by coal? ; Benefits of CBM ; Coal seams as aquifers; CBM product water ; What is saline water and why is it considered saline?; What is sodic water and why is it considered sodic? ; Irrigation of crops with CBM water; Current management practices for disposal of CBM product water
Le 03 Natural Gas (NG) Transportation and DistributionNsulangi Paul
This module describes means of transportation and distribution of natural gas from production area to the end user or consumers. The module analyzes various methods such as pipeline, liquefied natural gas (LNG), compressed natural gas (CNG), gas to liquid fuel (GtL), gas to wire (GtW) as well as gas to hydrate (GtH).
About Gas Hydrates, Indian Scenario, Worldwide Occurrence, Phase Diagram for the presence of Gas Hydrates in Permafrost region and Marine Environment, Techniques for Extraction, Problems and Challenges, Major Players for Production of Gas Hydrates, Policy's for Production and Future of Gas Hydrates.
Some information regarding the basics and formation of petroleum and its by products and also its exploration methods.. also in new technology of discovery is included
Gas hydrate
To prepare natural gas for sale, its undesirable components (water, H2S and CO2) must be removed. Most natural gas contains substantial amounts of water vapor due to the presence of connate water in the reservoir rock. At reservoir pressure and temperature, gas is saturated with water vapor
The current assignment discusses the formation of natural gas hydrates in gas transmission pipelines. Hydrates are crystalline compounds, consisting of a gas molecule and water, which form under certain thermodynamic conditions, which include high pressure and low temperature. Natural gas hydrates are responsible for pipeline plugging and corrosion. Thus, handling the issue of the formation is a matter of vital importance for the industry. At the theoretical background of the assignment the topic is presented and analyzed towards the hydrate structure and development, the formation, the consequences and, finally, the solutions as well as the inspection processes. In order to provide the optimal strategy in dealing with hydrate formation, it is of vital importance to have an understanding of the conditions that cause hydrate formation. The most accurate predictions can be conducted with the use of computer software. In the current assignment the chemical simulations software Aspen Hysys is used for studying the formation conditions. Three potential natural gas streams, with different compositions, were modeled and studied towards the conditions of hydrate formation.
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Conclusion
While methane may be broken down into a less harmful form, when methane is oxidized the problem doesn't simply go away. Methane oxidizes into carbon dioxide both in seawater and in the atmosphere, adding to the carbon dioxide levels in both these realms. As we have seen, carbon dioxide in seawater contributes to ocean acidity, while atmospheric carbon dioxide traps heat and promotes warming – though not quite to the extent that methane would – and as atmospheric CO2 levels rise, so too will the CO2 that is absorbed into the ocean. It is a classic feedback loop that feeds into itself, having the potential to accelerate global warming and climate change to a tipping point – the point of no return.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Safalta Digital marketing institute in Noida, provide complete applications that encompass a huge range of virtual advertising and marketing additives, which includes search engine optimization, virtual communication advertising, pay-per-click on marketing, content material advertising, internet analytics, and greater. These university courses are designed for students who possess a comprehensive understanding of virtual marketing strategies and attributes.Safalta Digital Marketing Institute in Noida is a first choice for young individuals or students who are looking to start their careers in the field of digital advertising. The institute gives specialized courses designed and certification.
for beginners, providing thorough training in areas such as SEO, digital communication marketing, and PPC training in Noida. After finishing the program, students receive the certifications recognised by top different universitie, setting a strong foundation for a successful career in digital marketing.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
2. INTRODUCTION
Gas hydrates are cage-like structures of water
molecules, surrounding molecules of gas, primarily
methane.
Methane is the principal component of natural gas.
They form when water and natural gas combine at
sufficiently low temperatures and high pressures.
They seen in the regions of permafrost and in
subseafloor sediments.
Theoretically estimated that maximum of 270 million
trillion cubic feet of natural gas exist in hydrate deposits.
3. HISTORY
Russian scientists in the late 1960s were the first to
propose that gas hydrate might occur naturally in marine
and onshore locations (Makogon and Medovskiy,1969)
In the early 1970s, scientists found that gas hydrate
existed below the permafrost and in marine sediments
(Stollet al., 1971; Bily and Dick, 1974).
Deep sea drilling expeditions confirmed that gas hydrate
occurred naturally in deepwater sediments along outer
continental margins (Paull et al., 1996; Tréhu et al.,
2003;Riedel et al., Proceedings of the ODP, 2006).
4. OCCURANCE
Natural gas hydrates are solid, crystalline, ice-like
substances composed of water, methane, and usually a
small amount of other gases,
With the gases being trapped in the interstices of a
water-ice lattice.
They form under moderately high pressure and at
temperatures near the freezing point of water.
In the United States, very large methane hydrate
deposits are located both on- and offshore northern
Alaska.
5. OCCURANCE
Fig:3 Location of known and inferred gas hydrate
occurrences
Kvenvolden and Rogers, 2005)
Reproduced with permission from Keith Kvenvolden and Bruce Rogers.
6. HYDRATE STABILITY
stability of the gas hydrate mostly depends on pressure
and temperature.
the mechanical properties of gas hydrate are similar to
those of ice because gas hydrate contains about 85 %
water by mass.
It may look like ice, it does not behave like ice — for
example, it burns when lit with a match.
colder temperatures and/or higher pressures — the gas
hydrate is stable.
8. NATURAL GAS HYDRATES
Gas hydrates form when water and natural gas combine
at low temperatures and high pressures.
Gas hydrates are cage-like structures of water
molecules.
surrounding molecules of gas, primarily methane.
Methane is the principal component of natural gas.
They are members of a highly varied class of substances
called clathrates.
9. NATURAL GAS HYDRATES cont..
Natural gas hydrate is a potentially vast source of
hydrocarbon energy that is currently unexploited.
They are seen in the regions of permafrost and in marine
subseafloor sediments.
They substances composed of water, methane, and
usually a small amount of other gases.
It has been estimated that a maximum of 270 million
trillion cubic feet of natural gas could theoretically exist in
hydrate deposits
10. NATURAL GAS HYDRATES cont..
It is highly inflammable and are called "Fiery ice"
or ―Ice that burns‖
12. PRODUCTION METHODS
There are three mainly used production methods are
1. DEPRUSSURIZATION.
2. THERMAL STIMULATION
3. CHEMICAL INHIBITION
13. PRODUCTION METHODS Cotd..
1. DEPRUSSURIZATION.
Its objective is to lower the pressure in the free-gas
zone immediately beneath the hydrate stability zone,
causing the hydrate at the base of the hydrate stability
zone to decompose and the freed gas to move toward
a wellbore.
.
14. PRODUCTION METHODS Cotd..
2. THERMAL STIMULATION.
which a source of heat provided directly in the form of
injected steam or hot water or another heated liquid, or
indirectly via electric or sonic means.
It is applied to the hydrate stability zone to raise its
temperature, causing the hydrate to decompose.
The direct approach could be accomplished in either of
two modes: a frontal sweep similar to the steam floods
that are routinely used to produce heavy oil, or by
pumping hot liquid through a vertical fracture between
an injection well and a production well.
15. PRODUCTION METHODS Cotd..
3. CHEMICAL INHIBITION.
It is similar in concept to the chemical means presently
used to inhibit the formation of water ice.
This method seeks to displace the natural gas hydrate
equilibrium condition beyond the hydrate stability
zone’s thermodynamic conditions through injection of a
liquid inhibitor chemical adjacent to the hydrate.
16. PRODUCTION METHODS Cotd..
Fig:3 Schematic of proposed gas hydrate production
methods: (a) thermal injection (b) depressurization, and (c)
inhibitor or other additive.
17. TRANSPORTATION
There are at least three ways to transport the gas
ashore;
by conventional pipeline;
by converting the gas hydrates to liquid middle distillates
via the newly-improved Fischer-Tropsch process and
loading it onto a conventional tanker or barge; or
by reconverting the gas into solid hydrate and shipping it
ashore in a close-to-conventional ship or barge
18. SAFETY &ENVIRONMENTAL
CONCERNS
Normal drilling can generate enough downhole heat to
decompose surrounding hydrates, possibly resulting in
loss of the well.
While large volumes of oceanic natural gas hydrate
deposits are known to have decomposed in the past
absent human influence.
It is clear that the release of large quantities of methane
into the atmosphere, can cause increase its greenhouse
capability since methane is 21 times more potent a
greenhouse gas than is CO2.
20. CHALLENGES
During drilling wells as part of the development of gas
hydrate will produce significant amount of cuttings
containing methane gas.
CO2 produced when methane is burned as a fuel.
methane itself is a greenhouse gas with 21 times than of
carbon dioxide.
High cost for long pipe lines across unstable continental
slops.
21. COMPARISONS
The natural gas is found is gaseous state, while gas
hydrate is a solid .
When natural gas is burned, it emits CO2, leads to
global warming. But the amount released is less than
that of coal or oil is burned.
Oil and coal, emit air pollutants like SO2 & nitrogen
oxides. But in natural gas no such emissions.
Methane gas is the cleanest fuel, because it emits
minimum residue in the environment.
22. CONCLUSION
exploration and quantification of gas- hydrates are very
much required for evaluating the resource potential and
hazard assessment.
Proper exploitation of methane at one hand can meet
the ever-increasing demand of energy and on the other
hand will reduce the environmental and submarine geo-
hazard.
There are several technical problems in extracting and
producing gas from gas-hydrates at this moment.
The recoverability of gas from gas hydrate may be
evaluated if the hydrate occurs in unfrozen sandy
sediments
23. REFERENCES
Sain, K., ZeIt, C.A., and Reddy,P.R., 2002.Imaging of subvolcanic
Mesozoics using traveltime inversion of wide-angle seismic data in the
Saurastra peninsula of India, Geophysical Journal International, 150,
Global Resource Potential of Gas Hydrate – ANew Calculation By Arthur H.
Johnson (Hydrate Energy International) ,vol 11,issue 2,methane hydrate
news letter .
The 2nd South Asain Geoscience Conference and
Exhibition,GEOIndia2011, 12-14th Jan,2011,Gearter Noida,New Delhi,India
,Asit Kumar Samadder, Petrophysist, ONGC , Mumbai,India Exploration of
Gas Hydrate and the present global scenario.
Gas Hydrates Resource Potential of South Asia, Published by SAARC
Energy Centre Plot No. 18, Street No. 6, Sector - H9/1 Islamabad,
Pakistan ,Mr .m .jamaluddin, Mr .malcolm v. lall.
Alternative energy sources: Methane hydrates – in from the cold By Michael
Richardson For the Straits Times, 12 April 2010.