Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS3095031 A
Publication typeGrant
Publication date25 Jun 1963
Filing date28 Dec 1959
Priority date9 Dec 1959
Publication numberUS 3095031 A, US 3095031A, US-A-3095031, US3095031 A, US3095031A
InventorsHarry Sinclair Leif, Oscar Eurenius Malte
Original AssigneeHarry Sinclair Leif, Oscar Eurenius Malte
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Burners for use in bore holes in the ground
US 3095031 A
Images(2)
Previous page
Next page
Description  (OCR text may contain errors)

June 25, 1963 M. o. EURENIUS ETAL 3,095,031

BURNERS FOR USE IN BORE HOLES IN THE GROUND Filed Dec. 28, 1959 2 Sheets-Sheet 1 INVENTOR MALTE OSCAR EURENIUS LEIF HARRY SINCLAIR AT TOR NEY June 25, 1963 M. o. EURENIUS ETAL 3,095,031

BURNERS FOR USE IN BORE HOLES IN THE GROUND Filed Dec. 28, 1959 2 Sheets-Sheet 2 1e 25 -36 ao 32" 31 Fig.3 Fi .1. 7 L7 v15 30- i i i P130 l I 1 I l I l K' B /18 18 i I as u U "32 324' I i -31. I l

A I r INVENTOR MALTE SCAR EURENIUS LEIF HARRY SINCLAIR ATTORNEY United States Patent 3,095,031 BURNERS FOR USE IN BORE HOLES IN THE GROUND Malte Oscar Eurenius, 7 von Rosensteins Vag, and Leif Harry Sinclair, 6 Andreas Vag, both of Kumla, Sweden Filed Dec. 28, 1.959, Ser. No. 862,212 Claims priority, application Sweden Dec. 9, 1959 6 Claims. (Cl. 158-99) This invention relates to burners for use in boreholes deeply penetrating into the ground.

More particularly this invention relates to gas burners of the type adapted to be placed in boreholes deeply penetrating from the surface into sub-surface deposits of bituminous sedimentary geological layers such as oil shale or tar sand for recovery of valuable liquid and/ or gaseous products therefrom by heating said deposits in their natural location in the ground.

Still more particularly this invention relates to a gas burner of the type described in the co-pending U.S. Serial No. 706,789, filed January 2, 1958 by Malte Oscar Eurenius, entitled Method and Means for Heating in Situ of Sub-surface Preferably Fuel Containing Deposits, in which tubular burner a uniform distribution of the temperature along a predetermined dimension of the tube is accomplished by conducting the combustion products or flue gases through a layer of solid granular particles such as sand, for example, so as to cause said particles to be whirled up and kept floating. To the upper endportion of the tube of the burner a mixture containing fuel and oxygen is supplied, the flue gases formed by the com bustion of the mixture within said tubular structure flowing downwards and then turning upwards through a space surrounding the burner tube and forming the zone in which the solid particles are kept floating.

It has now been found that the gas burner of the type set forth after interruption of the supply of the fuel mixture is diflicult to put in operation again unless the whole burner tube is lifted so'much as to cause its lower opening to be positioned above the layer of particles then packed into a dense mass. This lifting operation is elfected without diificulty if the burner is used in the heating of thin sedimentary deposits near the surface of the ground. The burner may then be lifted manually for the purpose of reignition. However, where the burner is used in the heating of thick sedimentary deposits and/ or deposits located at considerable depth below the ground surface its weight will be so great as to necessitate some kind of mechanical elevator device for the lifting operation.

One main object of the present invention is to improve the burner of the type set forth so as to permit easy lifting thereof even when intended for use in boreholes deeply penetrating into sub-surface deposits to be heated.

According to one main feature of the invention the burner tube is formed in two parts adapted to be in sealing connection during the heating operation but to be separated from one another by lifting of the upper part during the operation of igniting the fuel and oxygen mixture. During normal operation the tube parts thus are tightly pressed together and the burner works in the same manner as a non-divided tubular burner, for example of the type described in the co-pending application referred to hereinbefore. For the purpose of ignition of the fuel and oxygen mixture the parts are separated from one another in such a manner as to allow an igniting flame to penetrate into the interior of the burner through the space formed between said two parts.

Further objects and advantages of the invention will become apparent from the following description, considered in connection with the attached drawings, which form part of this specification, and of which:

FIG. 1 is a longitudinal sectional view of a tubular burner constructed according to the invention and illustrated in operative position in a vertical borehole in the ground.

FIGS. 2 and 3 are partial sectional views of adjacent end portions of the tube parts shown separated from one another and in an enlarged scale.

FIG. 4 is a perspective view also in an enlarged scale of end portions of the two tube parts in their abutting sealing position.

Referring now to FIG. 1, the fuel-carrying deposit to be heated is denoted by reference numeral 10. covered by a layer 12 consisting of limestone, shale, garden earth or the like. The burner comprises an external tube or protective casing 14 closed at its base and positioned in a hole bored through the layers 10 and 12, the space between the wall of the hole and the tube being filled With sand 15, if desired. The external tube 14 encloses a burner tube composed of two parts 16 and 18 which both have the same diameter and are kept in concentric position within the tube 14 by means of guide fins 20. The lower portion of the tubular burner part 18 constitutes the exhaust portion and is spaced by means of spacers or feet 22 for a predetermined distance from the base of the external tube 14 so as to permit the flue gases produced by the combustion of the fuel and oxygen containing mixture to escape from the burner tube. The lower end of the tube part 16 and the upper end of the tube part 18 are shaped so as to form a gas-tight fitting or seal when the two tube ends are pressed against one another. Said ends may be ground to constitute an external and internal conical sealing face 24 and 26, respectively (FIG. 2) or a conical and a part-spherical sealing face 27 and 2-8, respectively (FIG. 3). The sealing face of the lower part is preferably formed so as to prevent solid particles precipitated on said face from remainingthere and thereby obstructing gas-tight contact between the adjacent ends of the two tube parts. To eifect a well centered engagement between said adjacent tube ends either the upper or the lower end portion is provided with guide fins 30 forcing the other end portion into the correct position when the parts are pressed together.

These guide fins may preferably at the same time for their further purpose have to maintain the tube part centered relatively to the external tube 14.

Since the upper tube part 16 is in sealing engagement with the lower tube part 18 there may arise the danger of a change in pressure of the supplied mixture of fuel' and oxygen-containing gas forcing the burner parts apart from one another during a short time so as to allow gas to escape through the space between the adjacent end surfaces. This danger is eliminated by locking the burner' parts together in their sealing position. The lower burner part 18 is provided with at least one locking means such as projections 32 having their lower face 34 inclining slightly relatively to the horizontal plane. The guide fins 30 of the upper burner part are formed with recesses- 36 disposed so as to cause said recesses upon contact being established between the burner parts 16 and 18 to extend over and engage the locking projections 32 after a partrotational movement of the upper burner part relative to the lower part 18. This locking device has not only for its purpose to ensure the gas-tight seal between the burner parts but also to render possible simultaneous withdrawal of both burner parts from the external casing tube 14 by a single lifting operation.

The upper tube part 16 merges at its upper open end into a downwardly tapering conical part 38 which at its top is rigidly connected with a tube of reduced diameter for supply of fuel and an oxygen-containing gas such as a combustible gas and air or pure oxygen. This supply tube is through a coupling 42 and a hose 43 connected in a known manner with a piping system (not shown) Patented June 25, 1963 It is located above the ground and intended for controlled supply of fuel and oxygen-containing gas. The space between the lower burner part 18 and the external tube 14 is-fill'ed with sandor similar granular material 44 to a levelcausing saidmaterial during operation of the burner to be carried upwards and kept floating by the escaping flue gases within a zone, the upper level of which substantially coincides with the upper limit of the deposit 10 to be heated. The lower tube part 18 has such longitudinal dimension as in its position on the closed base of the'external tube-.14 with its upper end to project at least about one half yard over the upper level of the layer-f the granular material in its packed state of rest;

When :the burner is tobe ignited theupper tube part 16 is turnedso much as to disengage the locking members 32 and 36, whereupon it is lifted between approximately 2 and 4 inches. This lifting may be etfectedmanually or by means of a simple lifting device 46 operating according to the lever principle. Fuel and air or oxygen are supplied through the tube 40. When the air initially present in the burner has been driven out, the upwards flowing mixture of fuel and oxygen-is ignited when escaping from the external tube 14. The supply of said gas-mixture is then controlled so as to force the flame to migrate downwards in the space between the external tube 14 and the upper tube part of the burner and-into said burner through the'opening between theupper tube part 1-6 and the lower tube part 18 and to continue its migration upwards within the upper part 16 towards the conical part 38 in which the flame is normally maintained during operation. The upper part 16- is then lowered towards the lower part 18 and the parts :are locked together in the mannerdescribed hereinbefore. As soon as the sealing between the parts has been completed the flue gases will find their way through thelower endof the tube part 18 into the space between said part 18 and the external tube 14 and cause fluidization of-the layer of granular material 44. Thereafter the supply of fuel is adjusted-so as to cause a desired quantity of heat to be genera-ted in the burner and uponuniform distribution transferred into the deposit.

Whileseveral more 'or less specific embodiments of the invention have been described, it is to be understood that this is for purpose of illustration only and the-invention is not to be limited thereby but its scope is to be determined by the appended claims.

What we claim is:

1. A burner for heating a sub-surface deposit for recovery of valuable products and'constituted of a burner tube adapted to be lowered into a-vertical hole formed in the ground and penetrating from the surface into the deposit, said burner tube comprising a feeder portion connectable with its upper end to a source of a mixture containing fuel and oxygen and merging atits lower end intoa downwardly conically tapering portion constituting the zone of combustion of said mixture during normal operationof the-burner, and an exhaust portion having a combustion of said mixture, a casing surrounding said exhaust portion and 'feder portion, andat its base in open communication with the open base of the exhaust portion to constitute a flow passage in an upward direction to and above the surface of-the ground for the flue gases leaving the open base end of the exhaust portion, said casing containing a body of solid granular particles providing particles between thelower part thereof and the lower part of-the burner tube infloatingcondition by upwardly moving flue gases within'a zone substantially coinciding with that part of the deposit to be heated, characterized by said exhaust portion being subdivided at a slight distance from the conically tapering portion into two individual end-to-end communicating parts of which a first part is integral with said conically tapering portion and a second part formed'as a separate member, means to keep said'two parts of the exhaust portion in end to-end abutting and sealing connection with one another and to lift the first part together with the conically tapering portionand the feeder portion during the operation of igniting said fuel and oxygen mixture with the second part remaining in its location within the hole.

2. A burner accordingto claim 1, characterized by a spacer at the base of the-casing, on .and to support the secondmemberin spaced relation from the bottom of the protective casing, said second member further having a longitudinal dimension sufli'cient to raise the upper level of the tube portion of said second member above the upper level of the layer of the mass of granular particles in their packed state at rest;

3. A burner according to claim 1, characterized by the means to keep the parts of the exhaust portion in releasable sealing connection comprising locking members adapted to connect said parts axially by apart-rotational displacement of the first part relative to the second part, the abutting ends having inter-mating taperedfaces.

4. A burner according to claim 1, characterized by the means to keep the parts of'tlie exhaust portion in releasable sealing connection comprising locking members adapted to connect said parts axially by apart-rotational displacementof the first part relative to the-second part, one of the abuttingends being conical and the other being of part-spherical shape.

5. A burner accordingto claim 3, characterized by the locking members being formed' as guide means to center the first part'relative to the second part.

6. A burner according. to claim 5, characterized by additional guide fins provided on at least one of the parts of the exhaust portion to center said part relative to the other part of said exhaust portion.

References Cited in the fileof'this patent UNITED STATESPATENTS 2,051,713 Howard Aug. 18, 1936 2,260,167 Cope Oct. 21, 1941 2,269,699 Stoecker et al. Jan. 13, 1942 2,515,618 Wallerius -J-uly 18,.1950 2,890,755 Eurenius et al June 16, 1959 2,902,270 Salomonsson et-al. Sept. 1, 1959 2,927,640 Kenneday Mar. 8, 1960

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2051713 *5 Oct 193418 Aug 1936J H Mcevoy & CompanySet shoe seal and setting tool
US2260167 *9 Jun 193821 Oct 1941Electric Furnace CoPilot for fuel burners
US2269699 *23 May 193813 Jan 1942Askania Werke AgFuel burner for air heating apparatus
US2515618 *13 Apr 194418 Jul 1950Sunbeam CorpLiquid bath furnace
US2890755 *4 Jan 195416 Jun 1959Husky Oil CompanyApparatus for recovering combustible substances from subterraneous deposits in situ
US2902270 *1 Sep 19531 Sep 1959Husky Oil CompanyMethod of and means in heating of subsurface fuel-containing deposits "in situ"
US2927640 *16 May 19578 Mar 1960Jersey Prod Res CoWell tool placement apparatus
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4886118 *17 Feb 198812 Dec 1989Shell Oil CompanyConductively heating a subterranean oil shale to create permeability and subsequently produce oil
US5255742 *12 Jun 199226 Oct 1993Shell Oil CompanyHeat injection process
US5297626 *12 Jun 199229 Mar 1994Shell Oil CompanyOil recovery process
US5392854 *20 Dec 199328 Feb 1995Shell Oil CompanyOil recovery process
US5404952 *20 Dec 199311 Apr 1995Shell Oil CompanyHeat injection process and apparatus
US6056057 *15 Oct 19972 May 2000Shell Oil CompanyHeater well method and apparatus
US658168424 Apr 200124 Jun 2003Shell Oil CompanyIn Situ thermal processing of a hydrocarbon containing formation to produce sulfur containing formation fluids
US658850424 Apr 20018 Jul 2003Shell Oil CompanyIn situ thermal processing of a coal formation to produce nitrogen and/or sulfur containing formation fluids
US659190624 Apr 200115 Jul 2003Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation with a selected oxygen content
US659190724 Apr 200115 Jul 2003Shell Oil CompanyIn situ thermal processing of a coal formation with a selected vitrinite reflectance
US660703324 Apr 200119 Aug 2003Shell Oil CompanyIn Situ thermal processing of a coal formation to produce a condensate
US660957024 Apr 200126 Aug 2003Shell Oil CompanyIn situ thermal processing of a coal formation and ammonia production
US668838724 Apr 200110 Feb 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to produce a hydrocarbon condensate
US669851524 Apr 20012 Mar 2004Shell Oil CompanyIn situ thermal processing of a coal formation using a relatively slow heating rate
US670201624 Apr 20019 Mar 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation with heat sources located at an edge of a formation layer
US670875824 Apr 200123 Mar 2004Shell Oil CompanyIn situ thermal processing of a coal formation leaving one or more selected unprocessed areas
US671213524 Apr 200130 Mar 2004Shell Oil CompanyIn situ thermal processing of a coal formation in reducing environment
US671213624 Apr 200130 Mar 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using a selected production well spacing
US671213724 Apr 200130 Mar 2004Shell Oil CompanyIn situ thermal processing of a coal formation to pyrolyze a selected percentage of hydrocarbon material
US671554624 Apr 20016 Apr 2004Shell Oil CompanyIn situ production of synthesis gas from a hydrocarbon containing formation through a heat source wellbore
US671554724 Apr 20016 Apr 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to form a substantially uniform, high permeability formation
US671554824 Apr 20016 Apr 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to produce nitrogen containing formation fluids
US671554924 Apr 20016 Apr 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation with a selected atomic oxygen to carbon ratio
US671904724 Apr 200113 Apr 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation in a hydrogen-rich environment
US672242924 Apr 200120 Apr 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation leaving one or more selected unprocessed areas
US672243024 Apr 200120 Apr 2004Shell Oil CompanyIn situ thermal processing of a coal formation with a selected oxygen content and/or selected O/C ratio
US672243124 Apr 200120 Apr 2004Shell Oil CompanyIn situ thermal processing of hydrocarbons within a relatively permeable formation
US672592024 Apr 200127 Apr 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to convert a selected amount of total organic carbon into hydrocarbon products
US672592124 Apr 200127 Apr 2004Shell Oil CompanyIn situ thermal processing of a coal formation by controlling a pressure of the formation
US672592824 Apr 200127 Apr 2004Shell Oil CompanyIn situ thermal processing of a coal formation using a distributed combustor
US672939524 Apr 20014 May 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation with a selected ratio of heat sources to production wells
US672939624 Apr 20014 May 2004Shell Oil CompanyIn situ thermal processing of a coal formation to produce hydrocarbons having a selected carbon number range
US672939724 Apr 20014 May 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation with a selected vitrinite reflectance
US672940124 Apr 20014 May 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation and ammonia production
US673279424 Apr 200111 May 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to produce a mixture with a selected hydrogen content
US673279524 Apr 200111 May 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to pyrolyze a selected percentage of hydrocarbon material
US673279624 Apr 200111 May 2004Shell Oil CompanyIn situ production of synthesis gas from a hydrocarbon containing formation, the synthesis gas having a selected H2 to CO ratio
US673621524 Apr 200118 May 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation, in situ production of synthesis gas, and carbon dioxide sequestration
US673939324 Apr 200125 May 2004Shell Oil CompanyIn situ thermal processing of a coal formation and tuning production
US673939424 Apr 200125 May 2004Shell Oil CompanyProduction of synthesis gas from a hydrocarbon containing formation
US674258724 Apr 20011 Jun 2004Shell Oil CompanyIn situ thermal processing of a coal formation to form a substantially uniform, relatively high permeable formation
US674258824 Apr 20011 Jun 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to produce formation fluids having a relatively low olefin content
US674258924 Apr 20011 Jun 2004Shell Oil CompanyIn situ thermal processing of a coal formation using repeating triangular patterns of heat sources
US674259324 Apr 20011 Jun 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using heat transfer from a heat transfer fluid to heat the formation
US674583124 Apr 20018 Jun 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation by controlling a pressure of the formation
US674583224 Apr 20018 Jun 2004Shell Oil CompanySitu thermal processing of a hydrocarbon containing formation to control product composition
US674583724 Apr 20018 Jun 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using a controlled heating rate
US674902124 Apr 200115 Jun 2004Shell Oil CompanyIn situ thermal processing of a coal formation using a controlled heating rate
US675221024 Apr 200122 Jun 2004Shell Oil CompanyIn situ thermal processing of a coal formation using heat sources positioned within open wellbores
US675826824 Apr 20016 Jul 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using a relatively slow heating rate
US676121624 Apr 200113 Jul 2004Shell Oil CompanyIn situ thermal processing of a coal formation to produce hydrocarbon fluids and synthesis gas
US676388624 Apr 200120 Jul 2004Shell Oil CompanyIn situ thermal processing of a coal formation with carbon dioxide sequestration
US676948324 Apr 20013 Aug 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using conductor in conduit heat sources
US676948524 Apr 20013 Aug 2004Shell Oil CompanyIn situ production of synthesis gas from a coal formation through a heat source wellbore
US678962524 Apr 200114 Sep 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using exposed metal heat sources
US680519524 Apr 200119 Oct 2004Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to produce hydrocarbon fluids and synthesis gas
US682068824 Apr 200123 Nov 2004Shell Oil CompanyIn situ thermal processing of coal formation with a selected hydrogen content and/or selected H/C ratio
US686609724 Apr 200115 Mar 2005Shell Oil CompanyIn situ thermal processing of a coal formation to increase a permeability/porosity of the formation
US687170724 Apr 200129 Mar 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation with carbon dioxide sequestration
US687755424 Apr 200112 Apr 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using pressure and/or temperature control
US687755524 Apr 200212 Apr 2005Shell Oil CompanyIn situ thermal processing of an oil shale formation while inhibiting coking
US688063324 Apr 200219 Apr 2005Shell Oil CompanyIn situ thermal processing of an oil shale formation to produce a desired product
US688063524 Apr 200119 Apr 2005Shell Oil CompanyIn situ production of synthesis gas from a coal formation, the synthesis gas having a selected H2 to CO ratio
US688976924 Apr 200110 May 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation with a selected moisture content
US689605324 Apr 200124 May 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using repeating triangular patterns of heat sources
US690200324 Apr 20017 Jun 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation having a selected total organic carbon content
US690200424 Apr 20017 Jun 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using a movable heating element
US691053624 Apr 200128 Jun 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor
US691307824 Apr 20015 Jul 2005Shell Oil CompanyIn Situ thermal processing of hydrocarbons within a relatively impermeable formation
US691585024 Apr 200212 Jul 2005Shell Oil CompanyIn situ thermal processing of an oil shale formation having permeable and impermeable sections
US691844224 Apr 200219 Jul 2005Shell Oil CompanyIn situ thermal processing of an oil shale formation in a reducing environment
US691844324 Apr 200219 Jul 2005Shell Oil CompanyIn situ thermal processing of an oil shale formation to produce hydrocarbons having a selected carbon number range
US692325724 Apr 20022 Aug 2005Shell Oil CompanyIn situ thermal processing of an oil shale formation to produce a condensate
US692325812 Jun 20032 Aug 2005Shell Oil CompanyIn situ thermal processsing of a hydrocarbon containing formation to produce a mixture with a selected hydrogen content
US692906724 Apr 200216 Aug 2005Shell Oil CompanyHeat sources with conductive material for in situ thermal processing of an oil shale formation
US693215524 Oct 200223 Aug 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation via backproducing through a heater well
US694856224 Apr 200227 Sep 2005Shell Oil CompanyProduction of a blending agent using an in situ thermal process in a relatively permeable formation
US694856324 Apr 200127 Sep 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation with a selected hydrogen content
US695124724 Apr 20024 Oct 2005Shell Oil CompanyIn situ thermal processing of an oil shale formation using horizontal heat sources
US695308724 Apr 200111 Oct 2005Shell Oil CompanyThermal processing of a hydrocarbon containing formation to increase a permeability of the formation
US695976124 Apr 20011 Nov 2005Shell Oil CompanyIn situ thermal processing of a coal formation with a selected ratio of heat sources to production wells
US696430024 Apr 200215 Nov 2005Shell Oil CompanyIn situ thermal recovery from a relatively permeable formation with backproduction through a heater wellbore
US696637224 Apr 200122 Nov 2005Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to produce oxygen containing formation fluids
US696637424 Apr 200222 Nov 2005Shell Oil CompanyIn situ thermal recovery from a relatively permeable formation using gas to increase mobility
US696912324 Oct 200229 Nov 2005Shell Oil CompanyUpgrading and mining of coal
US697396724 Apr 200113 Dec 2005Shell Oil CompanySitu thermal processing of a coal formation using pressure and/or temperature control
US698154824 Apr 20023 Jan 2006Shell Oil CompanyIn situ thermal recovery from a relatively permeable formation
US699103124 Apr 200131 Jan 2006Shell Oil CompanyIn situ thermal processing of a coal formation to convert a selected total organic carbon content into hydrocarbon products
US699103224 Apr 200231 Jan 2006Shell Oil CompanyIn situ thermal processing of an oil shale formation using a pattern of heat sources
US699103324 Apr 200231 Jan 2006Shell Oil CompanyIn situ thermal processing while controlling pressure in an oil shale formation
US699103624 Apr 200231 Jan 2006Shell Oil CompanyThermal processing of a relatively permeable formation
US699104524 Oct 200231 Jan 2006Shell Oil CompanyForming openings in a hydrocarbon containing formation using magnetic tracking
US699416024 Apr 20017 Feb 2006Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to produce hydrocarbons having a selected carbon number range
US699416124 Apr 20017 Feb 2006Kevin Albert MaherIn situ thermal processing of a coal formation with a selected moisture content
US6994168 *24 Apr 20017 Feb 2006Scott Lee WellingtonIn situ thermal processing of a hydrocarbon containing formation with a selected hydrogen to carbon ratio
US699416924 Apr 20027 Feb 2006Shell Oil CompanyIn situ thermal processing of an oil shale formation with a selected property
US699725524 Apr 200114 Feb 2006Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation in a reducing environment
US699751824 Apr 200214 Feb 2006Shell Oil CompanyIn situ thermal processing and solution mining of an oil shale formation
US700424724 Apr 200228 Feb 2006Shell Oil CompanyConductor-in-conduit heat sources for in situ thermal processing of an oil shale formation
US700425124 Apr 200228 Feb 2006Shell Oil CompanyIn situ thermal processing and remediation of an oil shale formation
US701115424 Oct 200214 Mar 2006Shell Oil CompanyIn situ recovery from a kerogen and liquid hydrocarbon containing formation
US701397224 Apr 200221 Mar 2006Shell Oil CompanyIn situ thermal processing of an oil shale formation using a natural distributed combustor
US701766124 Apr 200128 Mar 2006Shell Oil CompanyProduction of synthesis gas from a coal formation
US7032660 *24 Apr 200225 Apr 2006Shell Oil CompanyIn situ thermal processing and inhibiting migration of fluids into or out of an in situ oil shale formation
US703658324 Sep 20012 May 2006Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to increase a porosity of the formation
US704039824 Apr 20029 May 2006Shell Oil CompanyIn situ thermal processing of a relatively permeable formation in a reducing environment
US704039924 Apr 20029 May 2006Shell Oil CompanyIn situ thermal processing of an oil shale formation using a controlled heating rate
US704040024 Apr 20029 May 2006Shell Oil CompanyIn situ thermal processing of a relatively impermeable formation using an open wellbore
US705180724 Apr 200230 May 2006Shell Oil CompanyIn situ thermal recovery from a relatively permeable formation with quality control
US705180824 Oct 200230 May 2006Shell Oil CompanySeismic monitoring of in situ conversion in a hydrocarbon containing formation
US705181124 Apr 200230 May 2006Shell Oil CompanyIn situ thermal processing through an open wellbore in an oil shale formation
US705560024 Apr 20026 Jun 2006Shell Oil CompanyIn situ thermal recovery from a relatively permeable formation with controlled production rate
US706314524 Oct 200220 Jun 2006Shell Oil CompanyMethods and systems for heating a hydrocarbon containing formation in situ with an opening contacting the earth's surface at two locations
US706625424 Oct 200227 Jun 2006Shell Oil CompanyIn situ thermal processing of a tar sands formation
US706625724 Oct 200227 Jun 2006Shell Oil CompanyIn situ recovery from lean and rich zones in a hydrocarbon containing formation
US707357824 Oct 200311 Jul 2006Shell Oil CompanyStaged and/or patterned heating during in situ thermal processing of a hydrocarbon containing formation
US707719824 Oct 200218 Jul 2006Shell Oil CompanyIn situ recovery from a hydrocarbon containing formation using barriers
US707719924 Oct 200218 Jul 2006Shell Oil CompanyIn situ thermal processing of an oil reservoir formation
US708646524 Oct 20028 Aug 2006Shell Oil CompanyIn situ production of a blending agent from a hydrocarbon containing formation
US708646824 Apr 20018 Aug 2006Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using heat sources positioned within open wellbores
US709001324 Oct 200215 Aug 2006Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation to produce heated fluids
US709694124 Apr 200129 Aug 2006Shell Oil CompanyIn situ thermal processing of a coal formation with heat sources located at an edge of a coal layer
US709694224 Apr 200229 Aug 2006Shell Oil CompanyIn situ thermal processing of a relatively permeable formation while controlling pressure
US709695324 Apr 200129 Aug 2006Shell Oil CompanyIn situ thermal processing of a coal formation using a movable heating element
US710099424 Oct 20025 Sep 2006Shell Oil CompanyProducing hydrocarbons and non-hydrocarbon containing materials when treating a hydrocarbon containing formation
US710431924 Oct 200212 Sep 2006Shell Oil CompanyIn situ thermal processing of a heavy oil diatomite formation
US711456624 Oct 20023 Oct 2006Shell Oil CompanyIn situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor
US712134124 Oct 200317 Oct 2006Shell Oil CompanyConductor-in-conduit temperature limited heaters
US712134223 Apr 200417 Oct 2006Shell Oil CompanyThermal processes for subsurface formations
US712815324 Oct 200231 Oct 2006Shell Oil CompanyTreatment of a hydrocarbon containing formation after heating
US715617624 Oct 20022 Jan 2007Shell Oil CompanyInstallation and use of removable heaters in a hydrocarbon containing formation
US716561524 Oct 200223 Jan 2007Shell Oil CompanyIn situ recovery from a hydrocarbon containing formation using conductor-in-conduit heat sources with an electrically conductive material in the overburden
US721973424 Oct 200322 May 2007Shell Oil CompanyInhibiting wellbore deformation during in situ thermal processing of a hydrocarbon containing formation
US722586631 Jan 20065 Jun 2007Shell Oil CompanyIn situ thermal processing of an oil shale formation using a pattern of heat sources
US732036422 Apr 200522 Jan 2008Shell Oil CompanyInhibiting reflux in a heated well of an in situ conversion system
US735387222 Apr 20058 Apr 2008Shell Oil CompanyStart-up of temperature limited heaters using direct current (DC)
US735718022 Apr 200515 Apr 2008Shell Oil CompanyInhibiting effects of sloughing in wellbores
US736058817 Oct 200622 Apr 2008Shell Oil CompanyThermal processes for subsurface formations
US737070422 Apr 200513 May 2008Shell Oil CompanyTriaxial temperature limited heater
US738387722 Apr 200510 Jun 2008Shell Oil CompanyTemperature limited heaters with thermally conductive fluid used to heat subsurface formations
US742491522 Apr 200516 Sep 2008Shell Oil CompanyVacuum pumping of conductor-in-conduit heaters
US743107622 Apr 20057 Oct 2008Shell Oil CompanyTemperature limited heaters using modulated DC power
US743503721 Apr 200614 Oct 2008Shell Oil CompanyLow temperature barriers with heat interceptor wells for in situ processes
US746169123 Jan 20079 Dec 2008Shell Oil CompanyIn situ recovery from a hydrocarbon containing formation
US748127422 Apr 200527 Jan 2009Shell Oil CompanyTemperature limited heaters with relatively constant current
US749066522 Apr 200517 Feb 2009Shell Oil CompanyVariable frequency temperature limited heaters
US750052821 Apr 200610 Mar 2009Shell Oil CompanyLow temperature barrier wellbores formed using water flushing
US751000022 Apr 200531 Mar 2009Shell Oil CompanyReducing viscosity of oil for production from a hydrocarbon containing formation
US751678510 Oct 200714 Apr 2009Exxonmobil Upstream Research CompanyMethod of developing subsurface freeze zone
US751678710 Oct 200714 Apr 2009Exxonmobil Upstream Research CompanyMethod of developing a subsurface freeze zone using formation fractures
US752709421 Apr 20065 May 2009Shell Oil CompanyDouble barrier system for an in situ conversion process
US753371920 Apr 200719 May 2009Shell Oil CompanyWellhead with non-ferromagnetic materials
US754032419 Oct 20072 Jun 2009Shell Oil CompanyHeating hydrocarbon containing formations in a checkerboard pattern staged process
US754687321 Apr 200616 Jun 2009Shell Oil CompanyLow temperature barriers for use with in situ processes
US754947020 Oct 200623 Jun 2009Shell Oil CompanySolution mining and heating by oxidation for treating hydrocarbon containing formations
US755609520 Oct 20067 Jul 2009Shell Oil CompanySolution mining dawsonite from hydrocarbon containing formations with a chelating agent
US755609620 Oct 20067 Jul 2009Shell Oil CompanyVarying heating in dawsonite zones in hydrocarbon containing formations
US755936720 Oct 200614 Jul 2009Shell Oil CompanyTemperature limited heater with a conduit substantially electrically isolated from the formation
US755936820 Oct 200614 Jul 2009Shell Oil CompanySolution mining systems and methods for treating hydrocarbon containing formations
US756270620 Oct 200621 Jul 2009Shell Oil CompanySystems and methods for producing hydrocarbons from tar sands formations
US756270719 Oct 200721 Jul 2009Shell Oil CompanyHeating hydrocarbon containing formations in a line drive staged process
US757505221 Apr 200618 Aug 2009Shell Oil CompanyIn situ conversion process utilizing a closed loop heating system
US757505321 Apr 200618 Aug 2009Shell Oil CompanyLow temperature monitoring system for subsurface barriers
US758158920 Oct 20061 Sep 2009Shell Oil CompanyMethods of producing alkylated hydrocarbons from an in situ heat treatment process liquid
US758478920 Oct 20068 Sep 2009Shell Oil CompanyMethods of cracking a crude product to produce additional crude products
US759714720 Apr 20076 Oct 2009Shell Oil CompanyTemperature limited heaters using phase transformation of ferromagnetic material
US760405220 Apr 200720 Oct 2009Shell Oil CompanyCompositions produced using an in situ heat treatment process
US761096220 Apr 20073 Nov 2009Shell Oil CompanySour gas injection for use with in situ heat treatment
US763168920 Apr 200715 Dec 2009Shell Oil CompanySulfur barrier for use with in situ processes for treating formations
US763169019 Oct 200715 Dec 2009Shell Oil CompanyHeating hydrocarbon containing formations in a spiral startup staged sequence
US763169125 Jan 200815 Dec 2009Exxonmobil Upstream Research CompanyMethods of treating a subterranean formation to convert organic matter into producible hydrocarbons
US763502320 Apr 200722 Dec 2009Shell Oil CompanyTime sequenced heating of multiple layers in a hydrocarbon containing formation
US763502419 Oct 200722 Dec 2009Shell Oil CompanyHeating tar sands formations to visbreaking temperatures
US763502520 Oct 200622 Dec 2009Shell Oil CompanyCogeneration systems and processes for treating hydrocarbon containing formations
US764476519 Oct 200712 Jan 2010Shell Oil CompanyHeating tar sands formations while controlling pressure
US764797123 Dec 200819 Jan 2010Exxonmobil Upstream Research CompanyMethod of developing subsurface freeze zone
US764797223 Dec 200819 Jan 2010Exxonmobil Upstream Research CompanySubsurface freeze zone using formation fractures
US766965710 Oct 20072 Mar 2010Exxonmobil Upstream Research CompanyEnhanced shale oil production by in situ heating using hydraulically fractured producing wells
US767368119 Oct 20079 Mar 2010Shell Oil CompanyTreating tar sands formations with karsted zones
US767378620 Apr 20079 Mar 2010Shell Oil CompanyWelding shield for coupling heaters
US767731019 Oct 200716 Mar 2010Shell Oil CompanyCreating and maintaining a gas cap in tar sands formations
US767731419 Oct 200716 Mar 2010Shell Oil CompanyMethod of condensing vaporized water in situ to treat tar sands formations
US768164719 Oct 200723 Mar 2010Shell Oil CompanyMethod of producing drive fluid in situ in tar sands formations
US768329620 Apr 200723 Mar 2010Shell Oil CompanyAdjusting alloy compositions for selected properties in temperature limited heaters
US770351319 Oct 200727 Apr 2010Shell Oil CompanyWax barrier for use with in situ processes for treating formations
US771717119 Oct 200718 May 2010Shell Oil CompanyMoving hydrocarbons through portions of tar sands formations with a fluid
US773094519 Oct 20078 Jun 2010Shell Oil CompanyUsing geothermal energy to heat a portion of a formation for an in situ heat treatment process
US773094619 Oct 20078 Jun 2010Shell Oil CompanyTreating tar sands formations with dolomite
US773094719 Oct 20078 Jun 2010Shell Oil CompanyCreating fluid injectivity in tar sands formations
US77359351 Jun 200715 Jun 2010Shell Oil CompanyIn situ thermal processing of an oil shale formation containing carbonate minerals
US778542720 Apr 200731 Aug 2010Shell Oil CompanyHigh strength alloys
US779372220 Apr 200714 Sep 2010Shell Oil CompanyNon-ferromagnetic overburden casing
US779822018 Apr 200821 Sep 2010Shell Oil CompanyIn situ heat treatment of a tar sands formation after drive process treatment
US779822131 May 200721 Sep 2010Shell Oil CompanyIn situ recovery from a hydrocarbon containing formation
US783113421 Apr 20069 Nov 2010Shell Oil CompanyGrouped exposed metal heaters
US783248418 Apr 200816 Nov 2010Shell Oil CompanyMolten salt as a heat transfer fluid for heating a subsurface formation
US784140119 Oct 200730 Nov 2010Shell Oil CompanyGas injection to inhibit migration during an in situ heat treatment process
US784140818 Apr 200830 Nov 2010Shell Oil CompanyIn situ heat treatment from multiple layers of a tar sands formation
US784142518 Apr 200830 Nov 2010Shell Oil CompanyDrilling subsurface wellbores with cutting structures
US784541119 Oct 20077 Dec 2010Shell Oil CompanyIn situ heat treatment process utilizing a closed loop heating system
US784992218 Apr 200814 Dec 2010Shell Oil CompanyIn situ recovery from residually heated sections in a hydrocarbon containing formation
US786037721 Apr 200628 Dec 2010Shell Oil CompanySubsurface connection methods for subsurface heaters
US786638520 Apr 200711 Jan 2011Shell Oil CompanyPower systems utilizing the heat of produced formation fluid
US791235820 Apr 200722 Mar 2011Shell Oil CompanyAlternate energy source usage for in situ heat treatment processes
US793108618 Apr 200826 Apr 2011Shell Oil CompanyHeating systems for heating subsurface formations
US795045318 Apr 200831 May 2011Shell Oil CompanyDownhole burner systems and methods for heating subsurface formations
US798686921 Apr 200626 Jul 2011Shell Oil CompanyVarying properties along lengths of temperature limited heaters
US802757121 Apr 200627 Sep 2011Shell Oil CompanyIn situ conversion process systems utilizing wellbores in at least two regions of a formation
US804261018 Apr 200825 Oct 2011Shell Oil CompanyParallel heater system for subsurface formations
US807084021 Apr 20066 Dec 2011Shell Oil CompanyTreatment of gas from an in situ conversion process
US808299514 Nov 200827 Dec 2011Exxonmobil Upstream Research CompanyOptimization of untreated oil shale geometry to control subsidence
US808381320 Apr 200727 Dec 2011Shell Oil CompanyMethods of producing transportation fuel
US80874607 Mar 20083 Jan 2012Exxonmobil Upstream Research CompanyGranular electrical connections for in situ formation heating
US810453715 Dec 200931 Jan 2012Exxonmobil Upstream Research CompanyMethod of developing subsurface freeze zone
US812295518 Apr 200828 Feb 2012Exxonmobil Upstream Research CompanyDownhole burners for in situ conversion of organic-rich rock formations
US814666421 May 20083 Apr 2012Exxonmobil Upstream Research CompanyUtilization of low BTU gas generated during in situ heating of organic-rich rock
US815187718 Apr 200810 Apr 2012Exxonmobil Upstream Research CompanyDownhole burner wells for in situ conversion of organic-rich rock formations
US81518809 Dec 201010 Apr 2012Shell Oil CompanyMethods of making transportation fuel
US815188410 Oct 200710 Apr 2012Exxonmobil Upstream Research CompanyCombined development of oil shale by in situ heating with a deeper hydrocarbon resource
US819163028 Apr 20105 Jun 2012Shell Oil CompanyCreating fluid injectivity in tar sands formations
US819268226 Apr 20105 Jun 2012Shell Oil CompanyHigh strength alloys
US822416324 Oct 200317 Jul 2012Shell Oil CompanyVariable frequency temperature limited heaters
US822416424 Oct 200317 Jul 2012Shell Oil CompanyInsulated conductor temperature limited heaters
US822416521 Apr 200617 Jul 2012Shell Oil CompanyTemperature limited heater utilizing non-ferromagnetic conductor
US822586621 Jul 201024 Jul 2012Shell Oil CompanyIn situ recovery from a hydrocarbon containing formation
US823092917 Mar 200931 Jul 2012Exxonmobil Upstream Research CompanyMethods of producing hydrocarbons for substantially constant composition gas generation
US823873024 Oct 20037 Aug 2012Shell Oil CompanyHigh voltage temperature limited heaters
US832768118 Apr 200811 Dec 2012Shell Oil CompanyWellbore manufacturing processes for in situ heat treatment processes
US835562322 Apr 200515 Jan 2013Shell Oil CompanyTemperature limited heaters with high power factors
US838181518 Apr 200826 Feb 2013Shell Oil CompanyProduction from multiple zones of a tar sands formation
US845935918 Apr 200811 Jun 2013Shell Oil CompanyTreating nahcolite containing formations and saline zones
US854002021 Apr 201024 Sep 2013Exxonmobil Upstream Research CompanyConverting organic matter from a subterranean formation into producible hydrocarbons by controlling production operations based on availability of one or more production resources
US859635510 Dec 20103 Dec 2013Exxonmobil Upstream Research CompanyOptimized well spacing for in situ shale oil development
US860609120 Oct 200610 Dec 2013Shell Oil CompanySubsurface heaters with low sulfidation rates
US860824926 Apr 201017 Dec 2013Shell Oil CompanyIn situ thermal processing of an oil shale formation
US86162797 Jan 201031 Dec 2013Exxonmobil Upstream Research CompanyWater treatment following shale oil production by in situ heating
US861628017 Jun 201131 Dec 2013Exxonmobil Upstream Research CompanyWellbore mechanical integrity for in situ pyrolysis
US862212717 Jun 20117 Jan 2014Exxonmobil Upstream Research CompanyOlefin reduction for in situ pyrolysis oil generation
US86221337 Mar 20087 Jan 2014Exxonmobil Upstream Research CompanyResistive heater for in situ formation heating
US864115011 Dec 20094 Feb 2014Exxonmobil Upstream Research CompanyIn situ co-development of oil shale with mineral recovery
USRE35696 *28 Sep 199523 Dec 1997Shell Oil CompanyHeat injection process
EP2098683A14 Mar 20089 Sep 2009ExxonMobil Upstream Research CompanyOptimization of untreated oil shale geometry to control subsidence
Classifications
U.S. Classification166/59, 175/11, 431/7, 431/202, 299/6
International ClassificationE21B36/00, E21B36/02
Cooperative ClassificationE21B36/02
European ClassificationE21B36/02