Work Files Saved Searches
   My Account                                                  Search:   Quick/Number   Boolean   Advanced       Help   


 The Delphion Integrated View

  Buy Now:   Buy PDF- 8pp  PDF  |   File History  |   Other choices   
  Tools:  Citation Link  |  Add to Work File:    
  View:  Expand Details   |  INPADOC   |  Jump to: 
 
 Email this to a friend  Email this to a friend 
       
Title: US4018279: In situ coal combustion heat recovery method
[ Derwent Title ]


Country: US United States of America

View Images High
Resolution

 Low
 Resolution

 
8 pages

 
Inventor: Reynolds, Merrill J.; Tulsa, OK 74135
Disney, Ralph W.; Tulsa, OK 74103

Assignee: None

Published / Filed: 1977-04-19 / 1975-11-12

Application Number: US1975000631108

IPC Code: Advanced: E21B 43/243; E21B 43/30;
IPC-7: E21B 43/25; F28D 21/00;

ECLA Code: E21B43/243; E21B43/30B;

U.S. Class: Current: 166/258; 048/DIG.006; 060/641.2; 165/045; 166/272.3;
Original: 166/258; 048/DIG.6; 165/045; 166/272;

Field of Search: 048/DIG. 6 165/045 166/261,269,256-258,272 299/004 175/012

Priority Number:
1975-11-12  US1975000631108

Abstract:     A method for recovery of heat generated by the combustion of coal in situ within coal seams in the earth. Three embodiments are described: one, in which the coal seam crops out and into which can be drilled and inserted a pipe, through the coal seam, to a central point, where it is joined with a vertical pipe drilled from the surface. Water is supplied to the pipe at the point of outcrop. Fires are started within the coal seam and supplied with air from the surface by means of drilled boreholes. The heat of combustion converts the water in the pipe to steam which travels up the vertical pipe and is used to drive a turbine generator system. A second embodiment is used where there is an overlying aquafer above the coal seam. Fires are started by means of air supplied through boreholes leading from the surface into the coal seam. The heat of combustion converts the water in the aquafer to steam, which then is circulated out of the aquafer and up to the surface where it drives a turbine generator system. A third embodiment uses the hot combustion gases to heat water to steam in pipes in a vertical borehole.

Attorney, Agent or Firm: Head, Johnson & Chafin ;

Primary / Asst. Examiners: Purser, Ernest R.;

INPADOC Legal Status: None          Buy Now: Family Legal Status Report

Family: Show 2 known family members

First Claim:
Show all 4 claims
What is claimed is:     1. In a geologic province where a shallow coal seam is present contiguous to a porous formation, the method of burning the coal in situ and recovering the heat of combustion, comprising:
  • a. drilling one or more vertical first boreholes from the surface through said porous formation and into said coal seam igniting said coal, and supplying air under pressure through said boreholes to maintain the combustion of said coal;
  • whereby heat will be transferred from said hot coal seam to said contiguous porous formation;
  • b. drilling at least one vertical second borehole from the surface to said porous formation and flowing water under pressure into said porous formation; whereby said water will be heated to steam; and
  • c. drilling at least one vertical third borehole from the surface to said porous formation, inserting a first casing into said third borehole, and connecting said first casing to a steam energy utilization means and simultaneously utilize the heat energy in said steam.


Background / Summary: Show background / summary

Drawing Descriptions: Show drawing descriptions

Description: Show description

Forward References: Show 3 U.S. patent(s) that reference this one

       
U.S. References: Go to Result Set: All U.S. references   |  Forward references (3)   |   Backward references (12)   |   Citation Link

Buy
PDF
Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 4pp US2497868* 1950-02 Dalin    
Get PDF - 6pp US2969226* 1961-01 Huntington    
Get PDF - 3pp US2994375* 1961-08 Hurley    
Get PDF - 3pp US3016953* 1962-01 Mary    
Get PDF - 8pp US3072187* 1963-01 Carr    
Get PDF - 8pp US3159215* 1964-12 Meldau et al.    
Get PDF - 6pp US3294167* 1966-12 Vogel    
Get PDF - 3pp US3323590* 1967-06 Gilchrist et al.    
Get PDF - 4pp US3349846* 1967-10 Trantham et al.    
Get PDF - 9pp US3554285  1971-01 Meldau  Phillips Petroleum Company PRODUCTION AND UPGRADING OF HEAVY VISCOUS OILS
Get PDF - 11pp US3599714  1971-08 Messman et al.   METHOD OF RECOVERING HYDROCARBONS BY IN SITU COMBUSTION
Get PDF - 8pp US3809159  1974-05 Young et al.  Continental Oil Company PROCESS FOR SIMULTANEOUSLY INCREASING RECOVERY AND UPGRADING OIL IN A RESERVOIR
  * some details unavailable
       
Foreign References: None

Inquire Regarding Licensing

Powered by Verity


Plaques from Patent Awards      Gallery of Obscure PatentsNominate this for the Gallery...

Thomson Reuters Copyright © 1997-2014 Thomson Reuters 
Subscriptions  |  Web Seminars  |  Privacy  |  Terms & Conditions  |  Site Map  |  Contact Us  |  Help