Abstract:
A method for enhanced recovery of hydrocarbonaceous fluids, the method including the steps of creating a plurality of wellbores in a subterranean formation, whereby one or more of the plurality of wellbores may include a directionally drilled portion with solution disposed therein, and an electrode operatively connected with a power source. Other steps include generating an electrical field within the subterranean formation, thereby causing an electrochemical reaction to produce a gas from the solution, such that the gas mixes with hydrocarbonaceous fluids present in the formation and increases pressure within at least one of the plurality of wellbores, the subterranean formation, and combinations thereof, thereby enhancing recovery of the hydrocarbonaceous fluid.
Abstract:
An actuation method according to one or more embodiments includes axially translating an operator in a first direction in response to applying a tubing pressure to a first side in excess of an annulus pressure acting on a second side, axially translating the operator in a second direction to an actuation position in response to applying an underbalance pressure level to the operator and operating a tool element from a first position to a second position in response to translating the operator to the actuation position.
Abstract:
An artificial lift device is useful for inducing artificial gas lift in a well bore fluid present in a horizontal well bore system using electrically conductive aqueous solution. The artificial lift device includes an ion exchange membrane, an electrode pair having an anode and a cathode separated by the ion exchange membrane, a sensor operable to detect the presence of solution and a power relay operable to selectively permit the electrode pair to receive electrical power. The artificial lift device is operable to form hydrogen product gas bubbles from hydrogen product gas. A method for providing artificial gas lift using the artificial lift device includes forming a horizontal well bore system having a well boot, introducing the artificial lift device into the well bore system, introducing electrical power to the electrode pair, and operating the device to introduce hydrogen product gas bubbles into the horizontal well bore system.
Abstract:
Группа изобретений относится к нефтедобывающей промышленности в части обработки призабойной зоны продуктивного пласта и предназначена для повышения его производительности. В скважину спускают корпус (5) с каналом (16) для сообщения с межтрубным пространством, закрытым опорной втулкой (17). В хвостовике (2) установлен регулятор расхода (36). Через опорную втулку (17) и регулятор расхода (36) закачивают рабочую жидкость в пласт. Регистрируют приемистость, по величине которой определяют объем рабочей жидкости для последующей продавки в пласт технологических жидкостей. Изолируют межтрубное пространство выше кровли продуктивного пласта. Закачивают указанные жидкости в пласт через опорную втулку (17) и регулятор расхода (36). Регистрируют приемистость призабойной зоны пласта и по ее величине устанавливают диаметры сопла (23) и камеры смешения (24) струйного насоса для достижения оптимальной производительности. Спускают струйный насос в корпус (5) с упором в опорную втулку (17). Рабочую жидкость под напором подают на сопло (23) струйного насоса, который перемещает опорную втулку (17) вниз. Открывается канал (16) для сообщения с межтрубным пространством. Струйный насос фиксируется с помощью клапанов в соответствующих седлах корпуса (5) и опорной втулки (17). Рабочая жидкость проходит через сопло (23), камеру смешения (24), канал (16) в межтрубное пространство. При этом в интервале продуктивного пласта создают депрессию. Производят откачку пластовой среды из скважины.
Abstract:
Injection of gas into a managed pressure drilling system to provide for operation of the drilling system in a downhole pressure window defined by the pore pressure of a formation being drilled and a fracture pressure of the formation. Gas injection being controlled so as to produce the desired downhole pressure without causing large oscillations in borehole pressure.
Abstract:
A flushing tool for a perforated tubing in a production tubing string is described. The flushing tool includes a chamber that is sealed at a pressure at or below atmospheric pressure when the flushing tool is in its sealed configuration, the chamber arranged to receive wellbore fluids when the flushing tool is in its activated configuration. A port allows ingress of wellbore fluids into the chamber when the flushing tool is in its activated configuration. A sealing means has a first position when the flushing tool is in its sealed configuration and a second position when the flushing tool is in its activated configuration. An actuator releases the flushing tool from its sealed configuration to its activated configuration by releasing the sealing means to move from the first position to the second position.
Abstract:
A process for enhanced oil and gas recovery. An enriched flue gas is synthesized from utility plant flue gas. The enriched flue gas is customizable for specific requirements; however, the gas is formed to have a high concentration of carbon dioxide. This is used as an injectant for enhancing the liberation of gas and/or oil from subterranean formations. The injection elevates recovery while sequestering carbon dioxide from the power plant source.
Abstract:
Gas is supplied from a host facility (2) to an underwater gas compressor (10) via a connecting pipeline (6) and the gas compressor is connected to a plurality of gas injection wells (7) for a hydrocarbon reservoir via well supply flowlines (8). The gas compressor (10) compresses the supplied gas to a higher pressure, and drives the gas into the reservoir via the flowlines (8) and gas injection wells (7) at a pressure at least as high as the pressure of the production fluid in the reservoir. This raises the overall pressure in the reservoir to drive production fluid there to the host facility (2). The compressed gas may alternatively be injected into production fluid in a production well to provide a gas lift effect.
Abstract:
A process and apparatus (200) for treating a wellbore (105) comprising subjecting a substantially same portion of the wellbore (105) to vibratory waves (220) produced by a plurality of wave generators (205 and 210). The waves (220) may have about the same frequency or a plurality of frequencies and the frequencies may partially overlap, not overlap, or be modulated across a range. Additionally, the frequencies may be modulated in an oval, hoop, and flexural modes. The vibratory waves (220) may be produced by firing the vibratory wave generators (205 and 210) simultaneously or in sequence. The wave generators (205 and 210) maybe a vibrating pipe, a piston, or a valve.
Abstract:
A method of producing petroleum from an oil reservoir by using a horizontal well excavated so as to give a proper distance between a gas injection well and a production well according to at least an average vertical permeability/average horizontal permeability ratio (kv/kh ratio) in a petroleum-producing oil reservoir.