Abstract:
A system and method is disclosed for contaminant extraction from a contaminated region of a borehole. The system includes a production pipe extending from a surface of the earth through a water permeable layer and into an underlying production zone. A side remediation borehole is located proximate the borehole and extends through the water permeable layer towards the production zone, the side remediation borehole including a remediation pipe. A vacuum source is in fluid communication with the side remediation borehole, the vacuum source being configured to extract gaseous contaminants from the side remediation borehole and the region of the borehole.
Abstract:
A vacuum chamber (104) is evacuated by a vacuum pump (102). The vacuum chamber is positioned within a wellbore. A wellbore is fluidically exposed to an interior of the vacuum chamber after the vacuum chamber has been evacuated. At least a portion of condensate within the wellbore is flashed responsive to fluidically exposing a wellbore to an interior of the vacuum chamber.
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:
Method for the re-injection and use of low-pressure associated gas in a partially exhausted reservoir (10) with which a production plant comprising a plurality of production wells (11,12) is associated, the method comprising the following steps: conveying the low- pressure associated gas extracted from at least one first extraction well (12) of the plurality of wells (11, 12, 13) to the inlet of a mixer (21); mixing the low-pressure associated gas with water at the surface; injecting said mixture of associated gas and water into an injection well (11) selected from the plurality of wells (11, 12) so as to generate a hydrostatic head which re-pressurizes and sends said associated gas into the partially exhausted reservoir.
Abstract:
The disclosed embodiments include a computer implemented method, apparatus, and computer program product that includes executable instructions that when executed performs operations for method for determining flow control device (FCD) properties for both an injection well and a production well in coupled injector-producer liquid flooding systems that yields uniform flooding along the production wel.
Abstract:
Systems and methods for filling submerged voids (102) with a foam-fluidized fill material (104) in an efficient and economical manner are disclosed herein. The foam fluidized fill material (104) is a granular solid material fluidized with a foam. The foam-fluidized fill material (104) is pumped or gravity-fed through an insertion tube (118) into the submerged void (102). The insertion tube (118) terminates at a point lying below a surface (122) of the liquid (106) within the void (102). Since the foam-fluidized fill material (104) is heavier than the liquid (104), the foam-fluidized fill material (104) exiting the insertion tube (118) sinks to the bottom of the void (102) and expands laterally at the bottom of the void (102) displacing the liquid (104). The liquid (104) is forced upward and out of the void (102) where it may be collected. Further, as the fill material (104) fills the void (102), the foam dissipates and the fill material (104) self compacts, making the filled void sufficiently load bearing.
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:
Water is supplied from a host facility (2) to a pump (10) in a seabed facility (5) via a connecting pipeline (6). The pump (10) pumps the water to a higher pressure, and injects the pumped water into a hydrocarbon reservoir at a pressure higher than the pressure of the fluid in the reservoir so that it drives production fluid there to the host facility (2).
Abstract:
In order to reduce discharge of environmentally harmful gases, particularly CO2, hot exhaust gas (G) from gas turbines used on oil recovery installations is injected into the oil reservoir, upon having passed through an afterburner/heat recovery assembly (E) and compressor equipment (C1 - C5) in which the O2 content of the exhaust gas is reduced to desired level. Heat energy recovered by the afterburner/heat recovery assembly (E) is preferably used for operating the compressor equipment (C1 - C5).
Abstract:
A pumping system including two pumps (7) operable in tandem is capable of developing a power of the order of 1000kW. The pumping system is used downhole in a reservoir to withdraw water at a sufficiently high rate or pressure to effect depressurising of the reservoir and enhance the recovery factor. The pumping system has two pump assemblies (1) each discharging fluid into a respective bypass conduit (2). The conduits (2) discharge fluid flowing therein into a production tubing (3). An anti-recirculation means (10) is coupled to the outlet of the discharge head (8) of each pump assembly (1) by way of a housing (11). The anti-recirculation means (10) is a one way valve arranged to prevent the flow of fluid from the bypass conduit (2) towards the pump or pumps (7). Two bypass conduits (2') may be provided for the two pump assemblies (1) or an elongate conduit (2'') having a crescent shaped cross section may be provided to have an increased fluid capacity.