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| Number | Title | Issue Date |
| 7584785 | Groundwater sampling device A replaceable DC electric motor and kit for a groundwater sampling and pumping device and system for withdrawing groundwater from a well. The motor is provided with means to align the motor with an alignment pin in the groundwater sampling device. ... | 09/08/2009 |
| 7347259 | Downhole oilfield erosion protection by using diamond A device for use with components for a downhole tool—such as a throat, a nozzle, or a diffuser—used for cleaning a wellbore, are disclosed which decreases the erosion of the components. The device may be comprised of a hardened material, such as stack of pure di... | 03/25/2008 |
| 7347256 | Portable well fluid extraction apparatus Well fluid extraction apparatus includes a resiliently downwardly biased discharge head and a canister lowerable from the discharge head into the well to receive fluid therefrom, and then liftable into telescoped engagement with the discharge head. A specially confi... | 03/25/2008 |
| 7343969 | Secondary packing arrangement for reciprocating pump polished rod A secondary packing arrangement is provided for use with a well having a reciprocating pump and polished rod, and in combination with a stuffing box, the stuffing box being modified. Packing seals, a barrier fluid and a pressure transmitter cooperate with modified s... | 03/18/2008 |
| 7331397 | Gas drive fluid lifting system A passive collection and pneumatic lifting system located in a well comprising a pneumatic tube, a fluid tube mounted within the pneumatic tube creating an annulus and a jet barrel chamber formed between the pneumatic tube and fluid tube in fluid communication at th... | 02/19/2008 |
| 7311152 | Gas operated pump for hydrocarbon wells The present invention generally relates to an apparatus and method for improving production from a wellbore. In one aspect, a downhole pump for use in a wellbore is provided. The downhole pump includes two or more chambers for the accumulation of formation fluids an... | 12/25/2007 |
| 7150325 | ROV retrievable sea floor pump A subsea pumping assembly locates on a seafloor for pumping well fluid from subsea wells to the level. The pumping assembly has a tubular outer housing that is at least partially embedded in the seafloor. A tubular primary housing locates in the outer housing and ha... | 12/19/2006 |
| 7114572 | System and method for offshore production with well control A system and method is provided for artificially lifting fluids from a formation. The system utilizes a production control unit having a jet pump assembly and valving to both lift the desired fluids and to provide well control. ... | 10/03/2006 |
| 7021373 | Downhole hydraulic ram A system and method for pumping water from a wellbore to a surface location using an improved motorless water pump. The improved motorless water pump is a downhole hydraulic ram pump powered by the renewable energy source, groundwater. As water falls down a wellbore... | 04/04/2006 |
| 6810953 | Shock absorber for oil well pumping unit A shock absorber for use between the reciprocating member of an oil well pumping mechanism and a polish rod connected to the rod spring and movable along a vertical pumping axis. The shock absorber comprises an upper and lower end plate having a peripheral surface a... | 11/02/2004 |
| 6659176 | Method for monitoring remediation of non aqueous phase solution A method and apparatus for remediation of non-aqueous phase liquids (NAPL), including the use of a prior art hydrophobic adsorption system including a continuous loop of adsorptive material, with a weighted pulley on the free end of the loop to allow for ... | 12/09/2003 |
| 6354371 | Jet pump assembly A jet pump assembly 10 for use in a subterranean wellbore 82 to lift produced fluids 72 to the surface, comprising a fixed type jet pump assembly 10 including a retrievable insert assembly 30 for retrieving substantially all working components of the jet ... | 03/12/2002 |
| 6318471 | Method for installing tubular members axially into the earth A method is disclosed for installing a tubular member, having an upper end and a closed lower end, axially into and through an over-pressured region of the earth by using a mandrel to drive the tubular member from near the bottom, which results in a signi... | 11/20/2001 |
| 6227226 | Fire activated, fail safe, gate valve bonnet A well control system having well controlled fluids distributed through pipes includes valves that are opened by a heat softened valve obstruction element. The translation of a fluid flow obstructing gate in a gate valve is driven by a stem element attach... | 05/08/2001 |
| 6092602 | Sealed lateral wellbore junction assembled downhole Apparatus and methods are provided which may be used in completing a wellbore junction. A lateral wellbore junction is sealed utilizing an apparatus assembled within the well. The apparatus may include multiple housings which are engaged with each other t... | 07/25/2000 |
| 5928520 | Method and apparatus for extracting ground water contaiminants An oil skimmer and method of operation for removing hydrocarbon contaminates from ground water are disclosed. A drive pulley and upper portions of a pickup belt of a belt type oil skimmer are encased within a hermetically sealed housing. A seal collar for... | 07/27/1999 |
| 5896924 | Computer controlled gas lift system Computer control and sensory information are combined with gas lift valve having a plurality of individual openings which are openable or closeable individually to provide varying flow rates of the lift gas. Each of the openings is controlled and is sensi... | 04/27/1999 |
| 5706892 | Downhole tools for production well control A plurality of electronically controlled downhole tools and systems for use in production wells is presented. These tools and systems include safety valve and pressure monitoring systems, remotely controlled inflation/deflation devices, remotely actuated ... | 01/13/1998 |
| 5692567 | Portable fluid lifting apparatus A portable oil recovery apparatus especially for use at de-pressurized wells. It is simple and inexpensive to build and to operate. The apparatus is small and lightweight enough so that it can be transported in a pickup truck for easy movement between wel... | 12/02/1997 |
| 5431228 | Downhole gas-liquid separator for wells A downhole gas-liquid separator for multiphase fluid producing wells includes a tubular member with a spiral baffle disposed therein and a duct including an inlet disposed adjacent the discharge end of the spiral baffle. Fluid flow into the separator unde... | 07/11/1995 |
| 5322119 | Submersible well probe sleeve A submersible well probe sleeve made of a cylindrical tube attached to a submersible pump. The cylindrical tube has a number of slots exposing access to a protective pouch. Inside the protective pouch a fluid level sensing probe is placed. The fluid has a... | 06/21/1994 |
| 5080781 | Down-hole hydrocarbon collector A portable low-viscosity hydrocarbon collector incorporating an endless absorption belt for collecting low-viscosity hydrocarbon liquids from a well and pumping those liquids to the surface. The collector incorporates a plurality of rollers which may be a... | 01/14/1992 |
| 4779682 | Method for the grit-free withdrawal of water from a well and also a device suitable therefor In a well with filter tube and filter gravel fill a slot profile for a collection element forming the suction tube has larger suction cut-outs at the bottom than at the top and effects an equalization of the flow velocity of the water passing into the fil... | 10/25/1988 |
| 4119150 | Method for treating well bores and apparatus therefor The method and apparatus of the invention involves treatment of a subterranean site, i.e., the producing sand sites, in a well bore to prevent infiltration of subterranean solids into the well bore or to stabilize or modify the area surrounding a portion ... | 10/10/1978 |
| 3993137 | Method and device for extinguishing fires in oil wells Method and apparatus for extinguishing fires in oil wells. The method includes the steps of: attaching a shell which is integral with required guides and valves to the outer oil producing pipe or its casing; inserting at least one positioning pin member t... | 11/23/1976 |
