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| Number | Title | Issue Date |
| 7409999 | Downhole inflow control device with shut-off feature A system and method for controlling inflow of fluid into a production string. In aspects, the invention provides a downhole sand screen and inflow control device with a gas or water shut-off feature that can be operated mechanically or hydraulically from the surface... | 08/12/2008 |
| 7357186 | Recirculation gas separator A submersible pumping system includes a pump, a motor that drives the pump and a separator assembly. The separator assembly is for separating gas from the fluid and includes an intake and a vent above the intake. Fluid enters the separator assembly at the intake and... | 04/15/2008 |
| 7347255 | Device for detecting water in product-only pump flow stream A device for detecting the presence of water in a product-only hydrocarbon pump system particularly used for the removal of subterraneous hydrocarbons from a remediation site through a well. The device comprises a sealed float switch chamber, positioned either upstr... | 03/25/2008 |
| 7328748 | Thermal actuated plunger A downhole plunger for a gas/oil well comprises a valve to regulate fluid flow past the plunger and a thermal actuator to control the valve. The thermal actuator of the disclosed device enables the valve to open and close aperatures without relying on the physical i... | 02/12/2008 |
| 7314080 | Slidable sleeve plunger An improved plunger lift mechanism comprises an internal hollow body having bypass orifices that, when exposed, allow fluid to pass through during plunger descent in a downhole tube to the bottom of a production well. A slidable sleeve slides along the hollow body t... | 01/01/2008 |
| 7290606 | Inflow control device with passive shut-off feature Devices and methods for control flow of formation fluids respect to one or more selected parameter relating to the wellbore fluid. In one embodiment, a flow control device for controlling fluid flow into the production tubular uses a flow restriction member that is ... | 11/06/2007 |
| 7290602 | Internal shock absorber bypass plunger A bypass plunger having one or more internal shock absorbing elements and a variety of bypass orifice options is disclosed. ... | 11/06/2007 |
| 7249748 | Electric motor actuated stop and self-closing check valve An electric motor actuated stop/check valve for industrial use such as liquid pumping systems which has a controlled opening and closing rate when liquid flow is in a forward direction but closes quickly upon reverse flow of liquid with no action from the electric m... | 07/31/2007 |
| 7219725 | Instrumented plunger for an oil or gas well A plunger for use in a plunger lift system of an oil or natural gas well includes one or more sensor assemblies, each including one or more sensors for measuring various physical and operational conditions during the operation of the well. The data acquired from the... | 05/22/2007 |
| 7185706 | Arrangement for and method of restricting the inflow of formation water to a well An arrangement for restricting the inflow of formation water from an underground formation to a hydrocarbon producing well, where, between the underground formation and a production tubing (38) located in the well, there is disposed at least one flow chamber ... | 03/06/2007 |
| 7100710 | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells The steel drill string attached to a drilling bit during typical rotary drilling operations used to drill oil and gas wells is used for a second purpose as the casing that is cemented in place during typical oil and gas well completions. Methods of operation are des... | 09/05/2006 |
| 7013997 | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells The steel drill string attached to a drilling bit during typical rotary drilling operations used to drill oil and gas wells is used for a second purpose as the casing that is cemented in place during typical oil and gas well completions. Methods of operation are des... | 03/21/2006 |
| 6962199 | Method for removing condensables from a natural gas stream, at a wellhead, downstream of the wellhead choke The present invention relates to a method for removing condensables from a natural gas stream, at a wellhead, downstream of the wellhead choke thereof. In accordance with the invention there is provided a method for removing condensables from a natural gas stream at... | 11/08/2005 |
| 6520259 | Method and apparatus for fluid entrainment The present invention presents an improved method and apparatus for liquid entrainment by a two-phase flow system. The present invention provides an apparatus that recovers liquids by entrainment without experiencing deadhead conditions, choking or dry re... | 02/18/2003 |
| 6367547 | Downhole separator for use in a subterranean well and method In accordance with the present invention, a downhole separation tool is provided which utilizes a downhole separation chamber with a series of fluid regulators responsive to a formation fluid and constituent components for separate desirable formation yie... | 04/09/2002 |
| 5873410 | Method and installation for pumping an oil-well effluent Installation for pumping a liquid coming from an underground source, comprising a well (10) extending from the surface (12) towards the liquid source (14), the well having a chamber (40) extending substantially over its entire length, at least one tubing ... | 02/23/1999 |
| 5333684 | Downhole gas separator A tool (400) is disclosed for use in recovering gas from a gas well without the production of water as well. The tool (400) uses a member, such as plurality of vertically stacked balls (430) which are lighter than water to close a channel 422 when the wat... | 08/02/1994 |
| 5307872 | Automatic choke An automatic choke has two piston-cylinder assemblies mounted within a housing having an inlet and an outlet. The piston-cylinder assemblies are connected in a closed hydraulic loop configuration. One piston-cylinder assembly is responsive to pressures at... | 05/03/1994 |
| 5301749 | Dual pump floating layer recovery apparatus There is provided a dual pump floating layer recovery apparatus for pumping a floating layer of contaminant out of a well. The apparatus comprises an upper pump and a lower pump. The lower pump creates a cone of depression which increases the amount of th... | 04/12/1994 |
| 5002130 | System for handling reeled tubing A system for handling a reeled tubing including a guide, a shear for cutting the tubing and a tubing injector including upper and lower strippers and guides and an enclosure for the injector. The enclosure in one form excludes sea water in an open bottome... | 03/26/1991 |
| 4527632 | System for increasing the recovery of product fluids from underwater marine deposits A system according to the invention includes a working well head 1 whose producing head is connected by a rigid or flexible pipe to at least one underwater degasifier tank. A pump 4 for lifting the product from the well or wells 1 is regulated by a contro... | 07/09/1985 |
| 4249598 | Outdoor well depth indicator An outdoor well depth indicator including a sleeve vertically slidable along a pipe extending above the well house and connected by a line to a float on the surface of the water in the well. The indicator sleeve can be seen from a distance and from any di... | 02/10/1981 |
| 4173255 | Low well yield control system and method A low well yield control system and method for preventing over pumping of wells and other fluid reservoirs. The control is positioned in the reservoir and includes a plurality of relief valves which are opened to replenish liquid in the reservoir from the... | 11/06/1979 |
| 4171016 | Water removal system for gas wells Water, with gas entrained therein, collecting in the bottom of the casing of a gas producing well is continuously removed using an ejector in the inner of a pair of coaxial tubes mounted in the casing by continuously pumping drive water downwardly between... | 10/16/1979 |
| 4035023 | Apparatus and process for hydraulic mining Apparatus for and process of mining a subterranean granular ore deposit through a well bore where the ore is eroded from the ore matrix by one or more laterally directed jets of fluid, e.g. water, forming an ore-bearing slurry. The apparatus comprises: A.... | 07/12/1977 |
| 4020902 | Well point system A well point system is provided having automatic regulation of the flow of fluid through each riser in order to shut off an individual riser when the water level drops below the well point of that particular riser. The automatic regulation of the flow of ... | 05/03/1977 |
| 3995690 | Well point system A well point system is provided having automatic regulation of the flow of fluid through each riser in order to shut off an individual riser when the water level drops below the well point of that particular riser. The automatic regulation in the flow of ... | 12/07/1976 |
| 3954612 | Septic tank system A septic tank system is provided with an indicator above the ground surface to indicate the water level in the tributaries leading from the tank so that any excess water therein may be pumped out before it causes a back up of sewage upstream of the septic... | 05/04/1976 |
