A low-pressure natural gas harvesting system that injects motive fluid into a first well by a compressor, which flows into a motive manifold that utilizes the Coandă effect to introduce a reduced pressure effect. The reduced pressure effect draws natural gas into the system from natural gas reservoirs through one or more inflow ports that are part of inflow manifolds, which may connect to a motive manifold. The natural gas and motive fluid mix after the motive fluid flows over a Coandă effect surface and the mixture is subsequently directed to flow to a production well.

A low-pressure natural gas harvesting system that injects motive fluid into a first well by a compressor, which flows into a motive manifold that utilizes the Coandă effect to introduce a reduced pressure effect. The reduced pressure effect draws natural gas into the system from natural gas reservoirs through one or more inflow ports that are part of inflow manifolds, which may connect to a motive manifold. The natural gas and motive fluid mix after the motive fluid flows over a Coandă effect surface and the mixture is subsequently directed to flow to a production well.

A method of drawing a fluid into a wellbore from a formation. The wellbore is separated into a first section and a second section via an annulus closure device, the annulus closure device having a passage therethrough. A pump at a surface location, circulates a circulation fluid in the first section to reduce a pressure in the second section. Reducing the pressure in the second section draws the fluid from the formation into the second section.

A method of drawing a fluid into a wellbore from a formation. The wellbore is separated into a first section and a second section via an annulus closure device, the annulus closure device having a passage therethrough. A pump at a surface location, circulates a circulation fluid in the first section to reduce a pressure in the second section. Reducing the pressure in the second section draws the fluid from the formation into the second section.

A pressure-up blow-down method for recovering oil from an underground hydrocarbon formation, comprising the steps of: injecting an injection fluid into alternatingly-spaced multiple-induced fractures which extend radially outwardly and along a horizontal portion of a wellbore in the formation; ceasing injection of said injection fluid; recovering to surface oil which flows from remaining of the multiple induced fractures into the wellbore; and successively repeating the foregoing steps one or more times. Gas preferentially is initially used as the injection fluid and after one successive iteration water is then used. A sliding sleeve or sleeves which may be selectively slid open and closed within the wellbore in accordance with the method to allow and prevent, at various time periods in the method, fluid communication with fluid injection fractures and oil production fractures.

A pressure-up blow-down method for recovering oil from an underground hydrocarbon formation, comprising the steps of: injecting an injection fluid into alternatingly-spaced multiple-induced fractures which extend radially outwardly and along a horizontal portion of a wellbore in the formation; ceasing injection of said injection fluid; recovering to surface oil which flows from remaining of the multiple induced fractures into the wellbore; and successively repeating the foregoing steps one or more times. Gas preferentially is initially used as the injection fluid and after one successive iteration water is then used. A sliding sleeve or sleeves which may be selectively slid open and closed within the wellbore in accordance with the method to allow and prevent, at various time periods in the method, fluid communication with fluid injection fractures and oil production fractures.

A marine vessel may be configured with a water pump and seawater treatment equipment for use in providing a marine vessel water pumping platform for pumping water into a subsea reservoir to help maintain or increase pressure to assist with producing oil and/or natural gas. The marine vessel water pumping platform allows for the pump and seawater treatment equipment to be continuously used for pumping operations as the marine vessel may be moved between subsea reservoir sites, which helps reduce maintenance costs. The water pump may be lower in minimal flow capacity than water pumps on platforms, thereby allowing for more diversity in supporting different oil and/or gas pumping in offshore drilling operations.

A marine vessel may be configured with a water pump and seawater treatment equipment for use in providing a marine vessel water pumping platform for pumping water into a subsea reservoir to help maintain or increase pressure to assist with producing oil and/or natural gas. The marine vessel water pumping platform allows for the pump and seawater treatment equipment to be continuously used for pumping operations as the marine vessel may be moved between subsea reservoir sites, which helps reduce maintenance costs. The water pump may be lower in minimal flow capacity than water pumps on platforms, thereby allowing for more diversity in supporting different oil and/or gas pumping in offshore drilling operations.

There is provided system and methods for restimulating a hydrocarbon producing well using water and pressures below the closure pressure, which results in production rates approaching the initial production rate of the well. There is provided multiple restimulation techniques using water based fluids at or below the closure pressure of the well, which results in production rates approach that of the prior rate upon stimulation.

There is provided system and methods for restimulating a hydrocarbon producing well using water and pressures below the closure pressure, which results in production rates approaching the initial production rate of the well. There is provided multiple restimulation techniques using water based fluids at or below the closure pressure of the well, which results in production rates approach that of the prior rate upon stimulation.