Inventor

ZHANG ETUAN

US88 patents

⚠️ This page may combine multiple inventors who share the name “ZHANG ETUAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ZHANG ETUAN

SHELL OIL CO

Creating fluid injectivity in tar sands formations

Heating tar sands formations while controlling pressure

In situ thermal processing of an oil shale formation using a pattern of heat sources

In situ thermal processing of a relatively permeable formation while controlling pressure

In situ thermal processing of a coal formation using a movable heating element

In situ thermal processing of a coal formation with heat sources located at an edge of a coal layer

In situ thermal processing of a hydrocarbon containing formation using heat sources positioned within open wellbores

In situ thermal processing of an oil reservoir formation

In situ thermal processing through an open wellbore in an oil shale formation

Thermal processing of an oil shale formation to increase permeability of the formation

In situ thermal processing of a relatively impermeable formation using an open wellbore

In situ thermal processing of a relatively permeable formation in a reducing environment

In situ thermal processing of an oil shale formation using a controlled heating rate

In situ thermal processing of a hydrocarbon containing formation to increase a porosity of the formation

In situ recovery from a kerogen and liquid hydrocarbon containing formation

In situ thermal processing of a hydrocarbon containing formation to produce hydrocarbons having a selected carbon number range

In situ thermal processing of an oil shale formation with a selected property

In situ thermal processing while controlling pressure in an oil shale formation

In situ thermal processing of an oil shale formation using a pattern of heat sources

Situ thermal processing of a coal formation using pressure and/or temperature control

In situ thermal processing of a hydrocarbon containing formation to produce oxygen containing formation fluids

In situ thermal processing of a coal formation with a selected ratio of heat sources to production wells

Thermal processing of a hydrocarbon containing formation to increase a permeability of the formation

In situ thermal processing of an oil shale formation using horizontal heat sources

In situ thermal processing of a hydrocarbon containing formation with a selected hydrogen content

In situ thermal processing of an oil shale formation to produce a condensate

In situ thermal processing of an oil shale formation to produce hydrocarbons having a selected carbon number range

In situ thermal processing of an oil shale formation in a reducing environment

In situ thermal processing of a hydrocarbon containing formation using a movable heating element

In situ thermal processing of a hydrocarbon containing formation having a selected total organic carbon content

In situ thermal processing of a hydrocarbon containing formation with a selected moisture content

In situ thermal processing of an oil shale formation to produce a desired product

In situ thermal processing of a hydrocarbon containing formation using pressure and/or temperature control

In situ thermal processing of a coal formation to increase a permeability/porosity of the formation

In situ thermal processing of coal formation with a selected hydrogen content and/or selected H/C ratio

In situ thermal processing of a relatively impermeable formation to increase permeability of the formation

In situ thermal processing of a hydrocarbon containing formation using a relatively slow heating rate

In situ thermal processing of a coal formation using heat sources positioned within open wellbores

In situ thermal processing of a coal formation using a controlled heating rate

In situ thermal processing of a hydrocarbon containing formation using a controlled heating rate

In situ thermal processing of a hydrocarbon containing formation by controlling a pressure of the formation

Situ thermal processing of a hydrocarbon containing formation to control product composition

In situ thermal processing of a hydrocarbon containing formation to produce formation fluids having a relatively low olefin content

In situ thermal processing of a coal formation and tuning production

In situ thermal processing of a hydrocarbon containing formation, in situ production of synthesis gas, and carbon dioxide sequestration

In situ thermal processing of a hydrocarbon containing formation to pyrolyze a selected percentage of hydrocarbon material

In situ thermal processing of a hydrocarbon containing formation to produce a mixture with a selected hydrogen content

In situ thermal processing of a hydrocarbon containing formation with a selected ratio of heat sources to production wells

In situ thermal processing of a hydrocarbon containing formation with a selected vitrinite reflectance

WELLINGTON SCOTT LEE

In situ thermal processing of a hydrocarbon containing formation with a selected hydrogen to carbon ratio