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Systems and methods for producing oil and/or gas

A technology for oil recovery and oil enhancement, used in chemical instruments and methods, earthmoving, wellbore/well components, etc., to solve problems such as harmful effects on the environment, air pollution, etc.

Inactive Publication Date: 2011-07-20
SHELL INT RES MAATSCHAPPIJ BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The resulting sulfur oxides may be a major cause of air pollution, and may have harmful effects on the environment

Method used

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  • Systems and methods for producing oil and/or gas
  • Systems and methods for producing oil and/or gas
  • Systems and methods for producing oil and/or gas

Examples

Experimental program
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Embodiment approach

[0079] In some embodiments, the carbon disulfide derived salt may be dissolved in water and the resulting solution pumped into the formation 206 and / or 306 . The dissolved carbon disulfide formulation may decompose to produce carbon disulfide in the formation 206 and / or 306 .

[0080] In some embodiments of the invention, the gases and liquids produced by wells 212 and / or 312 may be separated using gravity separators or centrifugal separators or other methods known in the art. The gas portion may be sent to carbon disulfide formulation production facilities 230 and / or 330 .

[0081] In some embodiments of the invention, all components of system 200 and / or system 300 may be within about 10 km, such as about 5, 3 or 1 km, of each other.

[0082] In some embodiments, oil and / or gas produced by wells 212 and / or 312 may be sent to a refinery and / or processing facility. Oil and / or gas can be processed to produce commercial products such as transportation fuels such as gasoline and...

Embodiment

[0086] Table 1 gives the flammability properties of carbon disulfide, including flash point, autoignition temperature, and flammability limit in air at 25°C. Corresponding flammability data for other commonly used oilfield and chemical industry substances are also given. It can be seen that the distinguishing feature of carbon disulfide solvents is their very low autoignition temperature, or the minimum temperature at which they are capable of spontaneous ignition in the presence of air in the absence of an ignition source. A wide flammability limit makes this ignition more likely. Even highly flammable hydrocarbons (ie octane and decane) and hydrocarbon mixtures (ie diesel or LPG) have auto-ignition temperatures above 100°C, and narrower flammability limits. In fact, the low autoignition temperature puts carbon disulfide itself in the combustible class of substances, as there have also been reports of fires caused by contact of drifting carbon disulfide vapors with incandesc...

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Abstract

A system for producing oil and / or gas comprises a formation comprising a mixture of oil and / or gas and an enhanced oil recovery mixture comprising an additive to increase an auto-ignition temperature of the mixture and a carbon disulfide formulation and / or a carbon oxysulfide formulation; and a mechanism for recovering at least a portion of the oil and / or gas.

Description

technical field [0001] The present invention relates to systems and methods for producing oil and / or gas. Background technique [0002] Large quantities of sour natural gas are produced today from natural gas wells, oil wells (eg, associated gas), and natural gas reservoirs that have been contaminated with hydrogen sulfide-producing bacteria. The presence of hydrogen sulfide and other sulfur compounds in fuels and other gases has long been of concern to users and producers of these gases. In addition to the corrosion and other negative effects of these impurities on equipment and processes, the combustion of natural gas often produces toxic emissions due to the oxidation of sulfur compounds. The resulting sulfur oxides may be a major cause of air pollution, and may have harmful effects on the environment. As a result, increasingly stringent federal and state laws have been issued aimed at reducing or eliminating sulphur-containing emissions, and the corresponding benefit l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/00
CPCE21B43/25E21B43/16C09K8/592
Inventor D·C·王
Owner SHELL INT RES MAATSCHAPPIJ BV
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