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7634946 |
Testing of bottomhole samplers using acoustics
A method for testing a hydrocarbon sample. In one embodiment, the apparatus comprises a sheath disposed about the hydrocarbon sample. The apparatus further comprises at least one set of acoustic...
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7596995 |
Single phase fluid sampling apparatus and method for use of same
An apparatus ( 100 ) for obtaining a plurality of fluid samples in a subterranean well includes a carrier ( 104 ), a plurality of sampling chambers ( 102 ) and a pressure source ( 108 ). The...
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7520158 |
Method and apparatus for reservoir characterization using photoacoustic spectroscopy
A method and apparatus are provided that assess reservoir compartmentalization by determining whether there are compositional differences such as whether the isotopic ratios of carbon (13C/12C) or...
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7484563 |
Formation evaluation system and method
A method of evaluating a fluid from a subterranean formation drawn into a downhole tool positioned in a wellbore penetrating the subterranean formation is provided. The method involves drawing...
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7472589 |
Single phase fluid sampling apparatus and method for use of same
An apparatus ( 300 ) for obtaining a fluid sample in a subterranean well includes a housing ( 302 ) having a sample chamber ( 314 ) defined therein. The sample chamber ( 314 ) is selectively in...
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7438128 |
Identifying zones of origin of annular gas pressure
A method for identifying annular gas sources in a wellbore is disclosed. In one embodiment, the method comprises providing a set of parameters, wherein the set of parameters corresponds to depths...
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7373812 |
Apparatus for sampling and logging on all producing zones of a well
The present invention discloses a full reservoir sampling and testing apparatus having a ground surface testing and controlling tool ( 36 ) and a downhole tool ( 1 ), the downhole tool ( 1 )...
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7240546 |
Method and apparatus for downhole detection of CO2 and H2S using resonators coated with CO2 and H2S sorbents
A formation fluid sample is exposed to a rigidly-supported semi-permeable membrane such as silicone rubber to permit diffusion of gases and vapors from the formation fluid into a vacuum chamber,...
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7234521 |
Method and apparatus for pumping quality control through formation rate analysis techniques
The present invention provides a method and apparatus for determination of the quality of a formation fluid sample including monitoring permeability and mobililty versus time to determine a...
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7231819 |
Chemical sensor for wellbore applications
There is described an analyzing device having two separation units to separate molecular species to detect molecular species in wellbore fluids with both separation units operating under forced...
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7210343 |
Method and apparatus for obtaining a micro sample downhole
The present invention provides a downhole sample tank and a plurality of micro sample chambers. The micro sample chambers can have at least one window for introduction of visible, near-infrared...
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7210342 |
Method and apparatus for determining gas content of subsurface fluids for oil and gas exploration
A process to analyze fluid entrained in well boreholes. The process includes gathering trap gas samples from return of drilling mud at multiple depths. The process also includes the steps of...
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7197923 |
Single phase fluid sampler systems and associated methods
A single phase fluid sampler system and associated methods. A fluid sampling method includes the steps of: receiving a fluid sample into a sample chamber of a fluid sampler; pressurizing the fluid...
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7191672 |
Single phase sampling apparatus and method
A single phase sampling apparatus and method for retrieving a formation fluid sample at or above the bubble point of the sample. The apparatus utilizes a gas charge contained between a sample...
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7178391 |
Insertion tube methods and apparatus
A drill string comprises a first drill string member having a male end; and a second drill string member having a female end configured to be joined to the male end of the first drill string...
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7155967 |
Formation testing apparatus and method
A method and apparatus for testing formations surrounding an earth borehole. The method includes the following steps: providing a tool movable through the borehole; providing a flow line in the...
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7100689 |
Sensor apparatus and method of using same
The invention relates to a system and method for sensing the characteristics of a fluid in a sub-surface formation. In one embodiment, the invention relates to a sensor apparatus for sensing a...
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7062958 |
Receptacle for sampling downhole
A receptacle ( 10 ) for use in collecting samples down a well bore ( 14 ) is provided, the receptacle comprising a plurality of interconnecting modules ( 22, 24, 26, 30, 32, 34 ). A main chamber (...
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7032444 |
Module for extracting gas from an underground liquid and installation equipped therewith
This invention concerns a module for extracting samples in gas phase of compounds present in an underground working liquid, the extractor module including a receptacle for the liquid, associated...
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7025138 |
Method and apparatus for hydrogen sulfide monitoring
The present invention relates to a method and apparatus for detection of hydrogen sulfide in downhole operations. A downhole tool is provided with a coupon adapted to react at varying degrees to...
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7008793 |
Method and device for taking a sample of an emulsion circulating in a line
The present invention is intended to take a sample of an emulsion circulating in a line. The emulsion is momentarily diverted from the main circulation line 1 thereof to a bypass line 2 . By...
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6941804 |
Determining the PVT properties of a hydrocarbon reservoir fluid
A method of determining an in situ PVT property of a hydrocarbon reservoir fluid that is present in a hydrocarbon-bearing formation layer traversed by a borehole, which method involves the steps...
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6938691 |
Portable groundwater sampling system
A portable groundwater sampling system utilizing an air pump in combination with a sampling tank, valves, and a pressure gauge to sample a liquid from a below ground surface monitoring well. The...
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6865933 |
Multi-level monitoring well
An apparatus and methods are provided for monitoring a well and for obtaining fluid samples from below the ground. The apparatus includes a single-piece, extruded plastic well stock that extends...
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6845657 |
Apparatus for sampling drill hole cuttings
A sample collection device for collecting a sample of drill cuttings from a hole being drilled as the hole is being drilled includes a stem collector surrounding the drill pipe. Pressurized air is...
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6826972 |
Lysimeter methods and apparatus
A suction lysimeter for sampling subsurface liquids includes a lysimeter casing having a drive portion, a reservoir portion, and a tip portion, the tip portion including a membrane through which...
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6823721 |
Method and system for mass flow balance accounting
A system which receives as inputs various measurements of solids and liquids in a clarification system and, from these measurements, determines the various constituents and their fractional makeup...
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6758090 |
Method and apparatus for the detection of bubble point pressure
The present invention discloses a method and apparatus to detect bubbles in a fluid sample to determine if gases are present, wherein an ultrasonic source is used and its properties monitored....
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6745835 |
Method and apparatus for pressure controlled downhole sampling
A method for sampling a subsurface formation includes positioning a formation testing tool in a borehole having borehole fluid with a pressure less than formation pressure such that a pressure...
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6499344 |
Apparatus and method to obtain representative samples of oil well production
A well tester adapted to select among members of an oil well family to provide a purged and clean vessel to receive samples of well production that include gas and oil, and by selective use of...
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6435021 |
Process for verifying the effectiveness of drilling fluids in stabilizing oil well walls
Process for measuring the effects on the mechanical proper-ties of shales due to interaction with drilling fluids, which comprises: (a) preparation of a shale sample; (b) measurement of the...
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6430994 |
Process for the continuous determination of the interaction between drilling fluids and shale formations
Process for the continuous determination of the interaction between drilling fluids and shale formations, which comprises: (a) preparation of a water- or oil-based drilling fluid; (b) preparation...
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6415659 |
Method for analyzing purge water
The present invention provides a method for monitoring select purge water parameters and determining when the parameters have stabilized. The method includes the steps of selecting which parameters...
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6408691 |
Well monitoring system
A well monitoring apparatus for burial in the ground to sample and monitor subsurface water having a cylindrical bailer unit with an internal reservoir chamber for collection of samples...
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6301959 |
Focused formation fluid sampling probe
A formation fluid sampling probe uses two hydraulic lines to recover formation fluids from two zones in a borehole. One of the zones is a guard zone and the other is a probe zone. The guard zone...
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6232598 |
Process and devices for characterizing ground water measurement points by distinguishing ground water from subterranean water accumulation
The invention describes a method and apparatuses for characterizing groundwater measuring sites by differentiating between groundwater and static water and serves, for example, for determining the...
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6194216 |
Method for determination of amine-based additives in drilling fluid filtrates
The invention concerns a method for determining the presence and quantity of an amine-based additive in fluids, particularly aqueous fluids used in hydrocarbon recovery such as drilling fluids,...
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6164127 |
Well flowmeter and down-hole sampler
An apparatus for and a process of evaluating well bore flow of water and for sampling of water within a well. A hose is inserted into the well to a known depth. To evaluate the water, a tracer...
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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...
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6092416 |
Downholed system and method for determining formation properties
In this invention, drill pipe or tubing is attached to a sampling tool that is suspended in a borehole. A wireline cable also connects the tool to surface equipment and establishes electrical...
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6029744 |
Method and apparatus for retrieving fluid samples during drill stem tests
A nipple is provided downhole as part of a tubing (drill string or production) string. The nipple has an interior passage with recesses therein and a seat. A data probe attached to a wireline...
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5901788 |
Well fluid sampling tool and well fluid sampling method
A well fluid sampling tool and method for retrieving reservoir fluid samples from deep wells. The sampling tool is lowered to the required depth, an internal sample chamber is opened to admit well...
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5775424 |
Depth-discrete sampling port
A sampling port is provided which has threaded ends for incorporating the port into a length of subsurface pipe. The port defines an internal receptacle which is in communication with subsurface...
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5759859 |
Sensor and method for detecting trace underground energetic materials
A subsurface soil contaminant identification system employs a cone penetrometer unit for continuously measuring the concentration of energetic materials in potentially contaminated soils. The...
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5520046 |
Process for the chemical logging of a liquid and chemical logging installation for performing said process
The invention relates to a process for the chemical logging of a liquid and to an installation for performing the process. An object of the invention is to develop a process which makes it possible...
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5388456 |
Procedure in order to detect the gas potential in sedimentary basins and the oil potential obtained from this
Thermocatalytically generated gaseous hydrocarbons from gas or oil prone source rocks in subsiding sedimentary basins and those penetrating the seal of gas or oil accumulations at the surface reach...
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5351525 |
Process for generating, by way of experimental tests, the capillary pressure curve in a porous medium
A technique is disclosed for obtaining the true capillary pressure curve directly from experimental measurements. The above said technique is based on the use of a small-size sample being into...
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5345819 |
Method and apparatus for wellbore stability analysis
Method and apparatus for the nondestructive testing of rock samples as a function of time are disclosed. A rock sample is placed in a sample vessel which simulates in-situ wellbore conditions of...
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5337838 |
Method and an apparatus for taking and analyzing level determined samples of pore gas/liquid from a subterranean formation
A method and an apparatus serve to take and analyze level determined samples of pore gas/liquid, e.g. water from a subterranean formation, in which a borehole is drilled and pore gas/liquid samples...
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5319966 |
Determining location and composition of liquid contaminants in geologic formations
A method is provided for locating non-aqueous phase liquid in an aquifer. An aqueous solution having the capacity to solubilize the contaminating liquid to concentrations greater than the...
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