organic deposits in oil and gas production pdf

Organic Deposits In Oil And Gas Production Pdf

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Most of the oil and gas deposits on the Norwegian shelf originate from a thick layer of black clay that currently lies several thousand metres under the seabed. The black clay is a source rock, which means a deposit containing significant quantities of organic residue. The clay was deposited around million years ago at the bottom of a sea that covered much of present-day northwestern Europe. Much of the seabed here was dead and stagnant, while the upper water layers were teeming with life. As the microscopic phytoplankton died, they sank to the bottom and accumulated in large quantities in the oxygen-free sediments.

EP2459843A1 - A method and system for removing organic deposits - Google Patents

Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. Escobedo and Dynora Vazquez Gurrola and G. The production and transportation of petroleum fluids could be severely affected by flocculation and deposition of heavy organics i. This is, in many instances, of devastating consequences if the amount of precipitation is rather large. Save to Library. Create Alert.

Al-Taq, Ali A. Organic deposit including asphaltene and paraffin may damage the near wellbore area and obstruct production tubings resulting in partial or total loss of well productivity. Most of asphaltene deposits are associated with paraffin. The deposition is expected to take place due to long shut-in time as experienced in this well with high GOR. A bailer samples was obtained from this well.

Natural gas also called fossil gas ; sometimes just gas is a naturally occurring hydrocarbon gas mixture consisting primarily of methane , but commonly including varying amounts of other higher alkanes , and sometimes a small percentage of carbon dioxide , nitrogen , hydrogen sulfide , or helium. Natural gas is a non-renewable [4] hydrocarbon used as a source of energy for heating, cooking, and electricity generation. It is also used as a fuel for vehicles and as a chemical feedstock in the manufacture of plastics and other commercially important organic chemicals. The extraction and consumption of natural gas is a major and growing driver of climate change. Natural gas is found in deep underground rock formations or associated with other hydrocarbon reservoirs in coal beds and as methane clathrates. Petroleum is another fossil fuel found close to and with natural gas. Most natural gas was created over time by two mechanisms: biogenic and thermogenic.

EP2459843A1 - A method and system for removing organic deposits - Google Patents

You must log in to edit PetroWiki. Help with editing. Content of PetroWiki is intended for personal use only and to supplement, not replace, engineering judgment. SPE disclaims any and all liability for your use of such content. More information. ISBN Get permission for reuse. Their mutual interactions, induced in part by changes in pressure and temperature, can lead to the accumulation of solids, both organic and inorganic scaling within the production system, as well as deterioration of the metals that the fluids contact corrosion.

Shepherd, A. Organic field deposits from distinct geographical regions were analysed using a wide range of analytical techniques, viz. Clear distinctions for end member soap types were observed with regard to the type and amount of cations, the naphthenic acid content, as well as their thermal behaviour. Specific soap samples were analysed along with their parent soap forming crude oils collected from the same field over a period of one year. The nature of two of these soap samples were found to be related to the particular chemical treatment on site.

This paper presents a case study where wellbore organic deposits were cleaned out using an emulsified system. The organic scale deposits exist in a well that was drilled and completed to inject water to maintain the oil reservoir pressure. The water injector well completion was located above a tar formation. The organic deposits in the wellbore affected the injectivity of water and restricted the water injection operations. Samples were collected from the downhole from the water injector well, and these samples were analyzed in the laboratory using IRS infrared spectroscopy and extraction by solvents.


Request PDF | On Jan 1, , Wayne W> Frenier and others published Organic Deposits in Oil and Gas Production | Find, read and cite all the research you.


PEH:Well Production Problems

SPE Member Price USD Organic Deposits in Oil and Gas Production provides an overview of the science and technology of organic solids formation, deposition, removal, and prevention, with emphasis on the basic chemical and mechanical principles of deposition control. Chapters describe the flow systems in which arterial deposits occur, place the technical aspects of deposition management in the perspective of the upstream oil and gas business, and address multiple aspects of organic deposits, including the chemical and physical driving forces for deposit formation, the methods for managing deposits, and the simulation tools that may be used to forecast the magnitude of potential problems. Together, these books will help you diagnose and resolve deposition issues in your operations.

The major parameters that influence the time-frame of this process are related to the properties of the crude oil and to the reservoir pressure and temperature. Failure to achieve expected well production could also occur, suddenly, after a well intervention or after the wellbore construction. In general, traditional treatments do not target all possible causes of crude oil flow-path reduction at the same time, and a sequence of treatment fluids are pumped to clean up the multiple damages e. The long cleanup time and high volume of fluids used in a multi-step treatment could impact the economics of the projects, especially offshore.

How is petroleum formed?

Oil shale is an organic-rich fine-grained sedimentary rock containing kerogen a solid mixture of organic chemical compounds from which liquid hydrocarbons can be produced, called shale oil. Shale oil is a substitute for conventional crude oil; however, extracting shale oil from oil shale is more costly than the production of conventional crude oil both financially and in terms of its environmental impact. A estimate of global deposits set the total world resources of oil shale equivalent of 6.

Formation, Removal and Inhibition of Organic Scale in the Oilfield Environment gives an overview of the science and technology of scale formation, removal, and inhibition to a general technical audience, with emphasis placed on the basic chemical and mechanical principles for scale control. Learn about the environment in which damaging scales occur and the technical aspects of scale management from an upstream oil and gas industry perspective. The text and more than illustrations describe aspects of inorganic scales, including the chemical driving forces for scale formation, methods for removing and preventing scale, and the mathematical methods behind engineering guidelines, along with a discussion of best practices and case histories for control of the various types of inorganic deposits. Together, these books will help you diagnose and resolve deposition issues in your operations. Wayne W. Frenier recently retired from Schlumberger after more than 30 years of research and development activities in the energy industry. His most recent assignment was as a Schlumberger advisor in product development in Sugar Land, Texas.

Al-Taq, Ali A. Organic deposit including asphaltene and paraffin may damage the near wellbore area and obstruct production tubings resulting in partial or total loss of well productivity. Most of asphaltene deposits are associated with paraffin.

Shepherd, A. Organic field deposits from distinct geographical regions were analysed using a wide range of analytical techniques, viz. Clear distinctions for end member soap types were observed with regard to the type and amount of cations, the naphthenic acid content, as well as their thermal behaviour. Specific soap samples were analysed along with their parent soap forming crude oils collected from the same field over a period of one year.

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