A steam operated flow control device and method is disclosed. In one mode, the flow control device enables steam to be injected into a subterranean formation region containing hydrocarbons. In another mode, the flow control device enables the hydrocarbons to be produced from the subterranean formation to the surface. The flow control device includes a piston disposed between a housing and a mandrel having aligned ports, which slides between a first position where one set of ports align with the ports in the housing and the mandrel and a second position where another set of smaller ports align with the ports in the housing and mandrel. The piston is operated by a bellows having a chamber which contains a fluid. The fluid responds to temperature and/or pressure variations.

A steam operated flow control device and method is disclosed. In one mode, the flow control device enables steam to be injected into a subterranean formation region containing hydrocarbons. In another mode, the flow control device enables the hydrocarbons to be produced from the subterranean formation to the surface. The flow control device includes a piston disposed between a housing and a mandrel having aligned ports, which slides between a first position where one set of ports align with the ports in the housing and the mandrel and a second position where another set of smaller ports align with the ports in the housing and mandrel. The piston is operated by a bellows having a chamber which contains a fluid. The fluid responds to temperature and/or pressure variations.

Methods and systems for stimulating light tight shale oil formations to recover hydrocarbons from the formations. One embodiment includes positioning a downhole burner in a first well, supplying a fuel, oxidizer, and water to the burner to form steam, injecting the steam and surplus oxygen into the shale reservoir to form a heated zone within the shale reservoir, wherein the surplus oxygen reacts with hydrocarbons in the reservoir to generate heat; wherein the heat from the reactions with the hydrocarbons and the steam increases permeability in a kerogen-rich portion of the shale reservoir, and producing hydrocarbons from the shale reservoir.

Methods and systems for stimulating light tight shale oil formations to recover hydrocarbons from the formations. One embodiment includes positioning a downhole burner in a first well, supplying a fuel, oxidizer, and water to the burner to form steam, injecting the steam and surplus oxygen into the shale reservoir to form a heated zone within the shale reservoir, wherein the surplus oxygen reacts with hydrocarbons in the reservoir to generate heat; wherein the heat from the reactions with the hydrocarbons and the steam increases permeability in a kerogen-rich portion of the shale reservoir, and producing hydrocarbons from the shale reservoir.

Methods for providing wellbores for electromagnetic heating of a hydrocarbon formation positioned below a ground surface and apparatus thereof are provided. The apparatus includes two or more wellbore casings positioned within two or more wellbores. The two or more wellbores extend from a proximal end at the ground surface to a distal end at the underground hydrocarbon formation. Each of the two or more wellbore casings have a proximal portion and a distal portion. The two or more wellbores are in proximity to one another at a junction. The apparatus also includes a first electrical connection between the proximal portions of the two or more wellbore casings for grounding the two or more wellbore casings and a second electrical connection between the distal portions of the two or more wellbore casings. The second electrical connection is located at the junction and provides a short circuit that reduces current traveling on the two or more wellbore casings to the ground surface.

Present disclosure a multi-component supercritical thermal fluid generation system and method with segmented air supply. The outlet of a water tank is communicated with the preheated water inlet of a multi-component supercritical thermal fluid generator body, the preheated water outlet of the multi-component supercritical thermal fluid generator body is communicated with the cold fluid inlet of a heat exchanger, the product outlet at the upper part of the multi-component supercritical thermal fluid generator body is communicated with the thermal fluid inlet of the heat exchanger, and the slag outlet at the lower part of the multi-component supercritical thermal fluid generator body is communicated with the inlet of a slag discharge lock hopper. Through the reasonable coupling design of the supercritical water gasification heat absorption zone and the oxidation reaction heat release zone in the multi-component thermal fluid generator, the self-heating of the multi-component supercritical thermal fluid generation system is realized.

Present disclosure a multi-component supercritical thermal fluid generation system and method with segmented air supply. The outlet of a water tank is communicated with the preheated water inlet of a multi-component supercritical thermal fluid generator body, the preheated water outlet of the multi-component supercritical thermal fluid generator body is communicated with the cold fluid inlet of a heat exchanger, the product outlet at the upper part of the multi-component supercritical thermal fluid generator body is communicated with the thermal fluid inlet of the heat exchanger, and the slag outlet at the lower part of the multi-component supercritical thermal fluid generator body is communicated with the inlet of a slag discharge lock hopper. Through the reasonable coupling design of the supercritical water gasification heat absorption zone and the oxidation reaction heat release zone in the multi-component thermal fluid generator, the self-heating of the multi-component supercritical thermal fluid generation system is realized.

Provided is a method and apparatus for predicting oil and gas yields in in-situ oil shale exploitation, the method includes: acquiring an original TOC value, a Ro value and an original HI value of a shale to be measured; and obtaining oil and gas yields in in-situ exploitation of the shale based on the original TOC value, Ro value, original HI value thereof and pre-established models for predicting oil and gas yields in in-situ oil shale exploitation, the models are pre-established based on oil and gas yield data obtained by performing a thermal simulation experiment on a plurality of different shale samples, and the original TOC value, Ro value and original HI value thereof. The above technical solution achieves a quantitative prediction of oil and gas yields in in-situ oil shale exploitation, and improves the accuracy and efficiency of prediction of oil and gas yields in in-situ oil shale exploitation.

Provided is a method and apparatus for predicting oil and gas yields in in-situ oil shale exploitation, the method includes: acquiring an original TOC value, a Ro value and an original HI value of a shale to be measured; and obtaining oil and gas yields in in-situ exploitation of the shale based on the original TOC value, Ro value, original HI value thereof and pre-established models for predicting oil and gas yields in in-situ oil shale exploitation, the models are pre-established based on oil and gas yield data obtained by performing a thermal simulation experiment on a plurality of different shale samples, and the original TOC value, Ro value and original HI value thereof. The above technical solution achieves a quantitative prediction of oil and gas yields in in-situ oil shale exploitation, and improves the accuracy and efficiency of prediction of oil and gas yields in in-situ oil shale exploitation.

Systems and methods for deployment of electric-based fracturing tools in vertical wells are disclose. A method of electric-based fracturing may include lowering an electrical stimulation tool into a wellbore using a drill pipe and isolating a lower portion of the wellbore that is downhole from an upper portion of the wellbore. The electrical stimulation tool may be disposed in the lower portion of the wellbore. A system for electric-based fracturing may include an isolation mechanism and an electrical stimulation tool. The isolation mechanism may be configured to expand from a retracted configuration spaced from an interior surface of a wellbore to an expanded configuration in contact with the inner surface of the wellbore. The electrical stimulation tool may be operatively coupled with the isolation mechanism and may be configured to be disposed distally relative to the isolation mechanism when positioned in the wellbore.