Methods for identifying compounds useful for producing heavy oils from underground reservoirs

a technology for underground reservoirs and heavy oils, applied in the direction of survey, instruments, borehole/well accessories, etc., can solve the problems of requiring significant time and energy consumption to recover all contained oil, and affecting the recovery of heavy oils, so as to facilitate the development of chemicals, improve physicochemical properties, and increase the efficiency of heavy oil removal
US20090114387A1Inactive Publication Date: 2009-05-07SCHLUMBERGER TECH CORP
10 Cites 15 Cited by

Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
SCHLUMBERGER TECH CORP
Publication Date
2009-05-07
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

Described herein are methods for identifying compounds useful for producing heavy oil from an underground reservoir. The methods facilitate the development of chemicals with improved physicochemical features. The methods generally involve first identifying a physicochemical property of a compound that needs to be improved in order to increase the efficiency of heavy oil removal from underground reservoirs. Next, the physicochemical property is calculated by molecular modeling using semi-empirical or ab-initio calculations. By modifying the molecular model of the compound, the targeted physicochemical property can be optimized. After a suitable compound has been identified, the compound can be synthesized and evaluated.
Need to check novelty before this filing date? Find Prior Art

Description

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority from U.S. Provisional Application No. 60 / 985,316, filed Nov. 5, 2007, which is incorporated herein by reference in its entirety.BACKGROUND OF THE INVENTION

[0002] 1. Field of the Invention

[0003] The number of steam assisted gravity drainage (SAGD) wells drilled in countries such as Canada is expected to increase in view of current demands for oil and fuels. In view of this, improving the production rate and / or increasing the total recovery from SAGD wells, and by Huff and Puff and cyclic steam stimulation (CSS) of wells, through the use of chemicals is highly desirable. Chemistry that can enhance the sweeping efficiency of the injected steam or hot water in the heavy oil reservoir is particularly desirable. When this approach is used globally in a reservoir, the production rate and total recovery is enhanced. Alternatively, when it is used locally, the use of chemicals can increase the local sweeping efficien...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More