Class 166/165 - With valved or closed top

Subclass of Class 166 - Wells
Definition: Devices in which the top of the container is closed or there
No. of patents: 26
Last issue date: 12/14/2010

Number	Title	Issue Date
7849917	Marginal oil extraction device A marginal oil extraction system having an upper extraction unit, an extraction container, and a lower valve assembly. The marginal oil extraction system uses at least some of these components to cheaply extract oil from a stripper oil well. In some cases the system...	12/14/2010
7481271	Marginal oil extraction system A marginal oil extraction system having an upper extraction unit, an extraction container, and a lower valve assembly. The marginal oil extraction system uses at least some of these components to cheaply extract oil from a stripper oil well. In some cases the system...	01/27/2009
7392719	Devices and methods for sampling groundwater Some embodiments of the present invention are related to devices and methods for sampling groundwater at multiple target depths, wherein each of the devices for sampling groundwater at multiple target depths comprises: a hammer part having a spring for generating in...	07/01/2008
7219750	Process and system for drilling and lining a bore hole An apparatus is provided for the drilling of a borehole and its simultaneous lining with cement or the like by the same apparatus. The apparatus comprises a combination spray head and reamer head, a means to drive the reamer head through a borehole and a means for d...	05/22/2007
7080686	Devices and methods for extraction, transportation and/or release of material Provided are methods and apparatuses for extracting, transporting and/or releasing various kinds of liquid and semi-liquid materials. The materials may have very high viscosity and may include solids. Generally speaking, the apparatus includes a container, a gateway...	07/25/2006
7028564	Low flow bailer system An improved bailer which allows for the variance of flow into the bailer through use of attachments with varying inflow orifice sizes. As the size of the orifice changes, the weight of the apparatus can also be changed allowing for an only slightly negative buoyancy...	04/18/2006
6966587	Self-emptying bailer A bailer has a check valve housing at its leading end. A free-floating ball in the check valve housing is unseated and admits liquid fluid into the bailer as the bailer enters a body of liquid fluid. The free-floating ball is seated and seals the liquid fluid within...	11/22/2005
6955216	Device for injecting a fluid into a formation A device for injecting a fluid into an earth formation surrounding a wellbore, comprising a body suitable to be arranged in the wellbore and being provided with means for connecting the body to a tubing, a fluid chamber for storage of said fluid, and a pair of infla...	10/18/2005
6817409	Double-acting reciprocating downhole pump A positive displacement pump for pumping fluids from a downhole formation to the earth's surface is provided. The pump first comprises a plunger. The plunger is reciprocated axially within the wellbore by a linear actuator, such as a submersible electrical pump, in ...	11/16/2004
6557632	Method and apparatus to provide miniature formation fluid sample An apparatus and method is given for evaluating a well fluid sub-sample at the well surface as the sample is transported to the well surface from a downhole wellbore location. The invention collects a formation fluid sample under pressure. The fluid sampl...	05/06/2003
6293346	Method and apparatus for relieving pressure A pressure relief system includes a closed space having fluid trapped therein, a chamber defined in the closed space, and a pressure responsive member for controlling fluid flow from the closed space to the chamber. Fluid flows from the closed space to th...	09/25/2001
6148914	Sampling hydrocarbons in a well using a flexible bag To take a sample of liquid and/or gaseous hydrocarbon at the surface or down an oil well, use is made of a flexible bag suspended by a tube from a top region of a wall of a closed receptacle. The bag and the tube are made of a flexible material that is le...	11/21/2000
5957196	Apparatus for enhanced bioremediation of underground contaminants A tall cylindrical silicone rubber gas permeable tube is adapted to fit in an injection well at least partly below the water table for the bioremediation of organic contaminants and to contain pressurized oxygen and/or other gases supportive of the anaero...	09/28/1999
5533570	Apparatus for downhole injection and mixing of fluids into a cement slurry An apparatus for downhole injection and mixing of fluids into a cement slurry. The apparatus includes embodiments which either carry a fluid to the proper injection point in a wellbore or maintain it at the proper injection point until activated. In a fir...	07/09/1996
5485881	Groundwater sampler For extracting samples of groundwater from a borehole. A down-hole fixture has a check-valve positioned at the foot of the borehole. A sampler is lowered down into the borehole. Pushing down on the sampler causes a stem on the sampler to unseat the check-...	01/23/1996
5343946	High pressure packer for a drop-in check valve A packer assembly for a drop-in check valve includes a series of stacked rings in the annulus between the housing of the drop-in check valve assembly and the surface of the bore of the landing sub. The rings include at least two elastomer rings of differe...	09/06/1994
5139085	Fluid sampling bottle usable in deep bore holes A sample bottle makes it possible to sample mixtures of water and gases in deep bore or drill holes. The filling of the volume (4) of the bottle is obtained by placing a volume (4) under a vacuum beforehand. Once in place, the pipe (10) is opened by withd...	08/18/1992
4949784	Wellhead leak containment An apparatus for producing fluid from a wellbore using a reciprocating pump which moves a sucker-rod string through the wellhead of the wellbore, a catch basin is carried by the wellhead in the vicinity where the sucker-rod string exits from the wellhead,...	08/21/1990
4886116	Natural gas production apparatus with bottom-hole separator There is disclosed apparatus for facilitating gas production in a flooded or partially flooded gas well. The well is provided with normal casing perforated in the production zone; tubing of about two inches in diameter is run from the surface inside the c...	12/12/1989
4848454	Downhole tool for use with a ball and seat traveling valve for a fluid pump A downhole tool for use with a ball and seat travelling valve associated with a moveable plunger includes a means for causing relative movement between the upper and lower housings forming the downhole tool, whereby a bumping force may be imparted to the ...	07/18/1989
4760881	Downhole steam sampler A downhole steam sampler for collecting the liquid phase content of a steam flow, immediately prior to the latter being injected into a substrate surrounding a hole or well. A reservoir within the sampler separates and retains the liquid phase while permi...	08/02/1988
4738311	Heat exchanger A heat exchanger for use for example in a laundry dryer comprises a plurality of plates defining flow passages therebetween for a first heat exchange medium. Each plate is made up of a plurality of aluminum elements having mutually co-operating positive a...	04/19/1988
4690216	Formation fluid sampler An apparatus for taking a sample of formation fluid and obtaining temperature and pressure data when the apparatus is lowered into a well casing or pipe string, said apparatus comprising: a sampling device; a gun perforator; two packers, one positioned ab...	09/01/1987
4463804	Vented non-pressurized, uncontaminated well fluid sampler A method is disclosed for recovering a non-pressurized and uncontaminated fluid sample from deep in a well or the like in an elongated sampler having a sample chamber formed by valves at both ends thereof in a tubular housing for trapping the fluid sample...	08/07/1984
4429742	Tubular alignment assembly Hollow tubular members used as piling to support offshore platforms and the like are more easily aligned with a stabbing means. The base of the stabbing means is flexibly attached to the inner surface of one end of a tubular member; the tip of the stabbin...	02/07/1984
4372382	Method and sampler for collecting a non-pressurized well fluid sample A method for collecting a non-pressurized sample of fluid from a well is disclosed and an illustrative sampler for performing the method is shown comprising two elongated sampler chamber interconnected upper and lower valves wherein the upper valve is mou...	02/08/1983

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Class 166/165 - With valved or closed top