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Atlantic Richfield Company Patents
Assignee:
Atlantic Richfield Company
Address:
Los Angeles, CA
No. of patents:
1836
Patents:












Patent Number Title Of Patent Date Issued
6148911 Method of treating subterranean gas hydrate formations November 21, 2000
A gas hydrate formation is treated by horizontally fracturing the formation, placing electrically conductive proppant particles in the fracture, and passing an electric current through the proppant particles in the fracture to generate sufficient heat to release gas from the hydrate.
6143137 Cooling pocket for a rotary drum cooler having a flexible vent pipe assembly November 7, 2000
A rotary drum cooler for cooling particulate material (e.g. coke particles) having at least one cooling pocket which, in turn, includes a flexible vent pipe assembly which can slide in relation to the shell of the cooler. By making the vent pipe slidable, it can move in response to the e
6142229 Method and system for producing fluids from low permeability formations November 7, 2000
A method and system for producing hydrocarbons from a low permeability formation through a well wherein the formation is first fractured with steam. The pressure of the produced fluids is measured at timed intervals and signals representative of these measurements are inputted into a
6133204 Use of oil-based gel-breaker/inhibitor compounds with polymer gels in well treatments October 17, 2000
A gel-breaking/gel-inhibiting composition containing at least one carboxylic acid or salt thereof is dispersed in a hydrophobic carrier fluid to break down a cross-linked polymer gel or inhibit the gelation of a polymer gel used in plugging in permeable subterranean formations contai
6132560 Rotary drum cooler having adjustable lifters October 17, 2000
A rotary drum cooler having a shell for cooling particulate material (e.g. coke particles) wherein the volumetric capacity of the lifters within the shell which lift the material from the bottom of the shell to the exit thereof can be adjusted to thereby affect the exit parameters (e.g.
6130199 Surfactant composition for cleaning wellbore and oil field surfaces using the surfactant composi October 10, 2000
A method and composition for removing deposits of heavy hydrocarbonaceous materials and finely divided inorganic particulate matter from wellbore and flowline surfaces using a composition containing an alkyl polyglycoside, an ethoxylated alcohol, a caustic and an alkyl alcohol.
6119779 Method and system for separating and disposing of solids from produced fluids September 19, 2000
A method and system for processing a production stream containing a substantial amount of sand for continuously separating and disposing of the sand by re-injecting the sand into a subterranean formation. The production stream is flowed through a separator (e.g. hydrocyclone) which s
6116340 Downhole build-up pressure test using coiled tubing September 12, 2000
A method and an apparatus for carrying out a downhole shut-in, pressure build-up test of a formation by lowering a string of coiled tubing having a pressure sensor and a packer thereon through the production tubing of the well. The packer is set to isolated the formation and the pressure
6112814 Method for cleaning wellbore surfaces using coiled tubing with a surfactant composition September 5, 2000
A method for cleaning a wellbore plugged with deposits of heavy hydrocarbons and finely-divided inorganic solids by circulating a surfactant composition containing an alkyl polyglycoside, an ethoxylated alcohol, a caustic and an alkyl alcohol through the wellbore with a coiled tubing
6110885 Acidic surfactant composition and method for cleaning wellbore and flowline surfaces using the s August 29, 2000
A method and composition for removing deposits of heavy hydrocarbonaceous materials and finely divided inorganic particulate matter from wellbore and flowline surfaces using a composition containing an alkyl polyglycoside, an ethoxylated alcohol, an acid and an alkyl alcohol.
6090754 Surfactant blends for well operation July 18, 2000
Surfactant compositions for wellbore operations consisting essentially of a first surfactant selected from the group consisting of alkyl polyglycosides containing alkyl groups containing an odd number of carbon atoms from about 9 to about 13 carbon atoms and a second surfactant selec
6089832 Through-tubing, retrievable downhole pump system July 18, 2000
A downhole pump system which allows the pump unit to be retrieved and re-installed through the production tubing while leaving the tubing, electrical cable, and the remainder of the components of the pump system in place. Preferably, the pump unit is run on a string of coiled-tubing
6070666 Fracturing method for horizontal wells June 6, 2000
A method for fracturing a horizontal well at a plurality of locations along the length of the horizontal portion of the well by plugging previously fractured downstream fracture zones with a mixture of a proppant and a slump-inhibiting material.
6062308 Well header for use in frigid environments May 16, 2000
A header capable of fluidly connecting a plurality of spaced terminals (e.g. wellheads} to a centralized location in a frigid environment while eliminating or substantially alleviating freezing within the header. The flowpath through the header is such that it forces a relatively warm fl
6061301 Filtering of overburden azimuthal anisotropy effects from 3D seismic survey signals May 9, 2000
A method and system for correcting seismic survey signals for separating and correcting for the effects of azimuthal anisotropy caused by the overburden, rather than the subsurface reflectivity, is disclosed. Following an initial estimate and normal moveout correction of the traces i
6058074 Method and system for detecting hydrocarbon reservoirs using amplitude-versus-offset analysis wi May 2, 2000
A computer system and method of operating the same to apply overburden corrections to seismic signals prior to amplitude-versus-offset (AVO) analysis is disclosed. The system and method retrieve common midpoint gathers of the seismic signals, and generate analytical, or complex, AVO
6058073 Elastic impedance estimation for inversion of far offset seismic sections May 2, 2000
A computer-implemented method, and system implementing the method, of performing impedance inversion of seismic survey data are disclosed. Sonic and density well logs are used to generate an elastic impedance model, at selected angles of incidence or offset range, using an expression for
6056054 Method and system for separating and injecting water in a wellbore May 2, 2000
A method and system for increasing the production of hydrocarbons from a production well producing a mixture of hydrocarbons and water through a wellbore penetrating a formation having a production zone producing a mixture of hydrocarbons and water, and a selected injection zone, by
6054496 Method for transporting a heavy crude oil produced via a wellbore from a subterranean formation April 25, 2000
A method for producing a heavy crude oil from a subterranean formation through a wellbore, transporting the heavy crude oil to a market location and converting the heavy crude oil into a product distillate hydrocarbon stream and by-products such as heat, steam, electricity and synthesis
6053249 Method and apparatus for injecting gas into a subterranean formation April 25, 2000
A method and apparatus for injecting gas into a subterranean formation wherein the gas to be injected is mixed with a carrier fluid (e.g. water) at the surface to form a mixture which is then flowed down a wellbore. The mixture is flowed through a downhole separator to separate at least
6039507 Method and device for assembling cluster platforms March 21, 2000
A method for assembling a cluster platform in a body of water, by embedding a plurality of conductors in soil underlying the body of water; wet welding in the body of water at least one bracing element between the plurality of conductors, wherein the bracing element is wet welded to at
6039116 Oil and gas production with periodic gas injection March 21, 2000
A method and apparatus for operating a well which has a wellbore which passes into both an oil and gas production zone and a gas injection zone. An oil and gas stream is produced from the production zone through the wellbore to the surface where gas is separated from the oil. After p
6035934 Method and system for separating and injecting gas in a wellbore March 14, 2000
A method and system for increasing oil production from an oil well producing a mixture of oil and gas through a wellbore penetrating an oil-bearing formation containing an oil-bearing zone and a selected injection zone, by driving a turbine in the oil well with the mixture of oil and
6032737 Method and system for increasing oil production from an oil well producing a mixture of oil and March 7, 2000
A method and system for increasing oil production from an oil well producing a mixture of oil and gas at an elevated pressure through a wellbore penetrating an oil-bearing formation containing an oil-bearing zone and an injection zone, by separating at least a portion of the gas from
6026904 Method and apparatus for commingling and producing fluids from multiple production reservoirs February 22, 2000
A method and apparatus for commingling and producing fluids from an upper and lower reservoir wherein one of the reservoirs has a greater flow capacity than does the other. A jet pump is positioned adjacent the upper reservoir and uses the fluid from the higher-flow capacity reservoir as
6026901 Method and system for separating and injecting gas in a wellbore February 22, 2000
A method and system for increasing oil production from an oil well producing a mixture of oil, water, gas, and/or solids through a wellbore penetrating an oil-bearing formation containing an oil-bearing zone and a selected injection zone, by separating from the mixture of oil, water,
6026057 Method and system for correcting for offset-dependent directivity effects in seismic survey sign February 15, 2000
A method and computer system for correcting seismic signals in a seismic survey, sensed in horizontal and vertical directions at receiver locations, is disclosed. According to the disclosed method and system, the horizontal and vertical seismic signal traces are processed in prestack
6024171 Method for stimulating a wellbore penetrating a solid carbonaceous subterranean formation February 15, 2000
A method for stimulating a wellbore penetrating a solid carbonaceous subterranean formation by positioning a hydrajet in an uncased portion of the wellbore penetrating the formation; perforating the formation with the hydrajet; and producing carbonaceous fluids and particulates from the
6009940 Production in frigid environments January 4, 2000
A method and apparatus for producing (e.g. heavy oil) through a wellbore which passes through a permafrost layer. To maintain an acceptable flow temperature inside the production tubing, a heating element (e.g. electrical power cable having its leads short-circuited) is lowered down
6000412 Method for cleaning deposits from a tank using a surfactant composition December 14, 1999
A method for removing deposits of heavy hydrocarbonaceous materials and finely divided inorganic particulate matter from a tank using a composition containing an alkyl polyglycoside, an ethoxylated alcohol, a caustic and an alkyl alcohol.
5996692 Surfactant composition and method for cleaning wellbore and oil field surfaces using the surfact December 7, 1999
A method and composition for removing deposits of heavy hydrocarbonaceous materials and finely divided inorganic particulate matter from wellbore and flowline surfaces using a composition containing an alkyl polyglycoside, an ethoxylated alcohol, a caustic and an alkyl alcohol.
5992521 Method and system for increasing oil production from an oil well producing a mixture of oil and November 30, 1999
A method for enriching a mixture of a first fluid and a second fluid in the second fluid by separating at least a portion of the first fluid from the mixture of the first fluid and the second fluid; directing the separated first fluid into a jet pump; injecting a power fluid into the jet
5989336 Cement composition November 23, 1999
A cement slurry composition suitable for well bore cementation is provided containing as an essential component a synthetic hectorite clay in amount sufficient to reduce free water formation and solids segregation.
5988950 Method and system for preventing upward migration of contaminants in soil November 23, 1999
A system for preventing upward migration of contaminants in soil having capillary pores defined therein, the system comprising the soil and a hydrophobic substance applied to the soil, the substance being attracted to enter the capillary pores so that a barrier is formed which, under
5988278 Using a horizontal circular wellbore to improve oil recovery November 23, 1999
A method for increasing the recovery of oil from a subterranean formation having at least one producer wellbore drilled therein, whereby a generally horizontal and generally circular wellbore is drilled so that oil is located between the generally horizontal and generally circular wellbo
5988275 Method and system for separating and injecting gas and water in a wellbore November 23, 1999
A method and system for increasing oil production from an oil well producing a mixture of oil, water, and gas through a wellbore penetrating an oil-bearing formation containing an oil-bearing zone, an aqueous zone, and a gas zone by separating from the mixture of oil, water, and gas in
5987388 Automated extraction of fault surfaces from 3-D seismic prospecting data November 16, 1999
An automated method of processing a fault-enhanced 3-D seismic volume (V) to locate and interpret faults is disclosed. The method includes processing of individual lateral slices (LS.sub.j) of the volume (V). For each slice (LS.sub.j), stripe artifacts are eliminated (36) by adjusting
5982706 Method and system for determining normal moveout parameters for long offset seismic survey signa November 9, 1999
A method and computer system for deriving and applying normal moveout corrections to seismic survey traces is disclosed. In each common midpoint (CMP) gather, a stacking velocity function of travel time is first determined for near-offset traces. For each reflective event, a time win
5977032 Acidic surfactant composition and method for cleaning wellbore and flowline surfaces using the s November 2, 1999
A method and composition for removing deposits of heavy hydrocarbonaceous materials and finely divided inorganic particulate matter from wellbore and flowline surfaces using a composition containing an alkyl polyglycoside, an ethoxylated alcohol, an acid and an alkyl alcohol.
5972103 Universal well cement additives and methods October 26, 1999
The present invention provides universal well cement additives and methods. The universal well cement additives improve the properties of a well cement slurry and are basically comprised of iron chloride, an alkali or alkaline-earth metal halide, an organic acid and a hydratable polymer.
5970422 Method for generating a flow profile of a wellbore from pulsed neutron logs October 19, 1999
A method for generating a flow profile of a wellbore whereby a first measurement and a second measurement are collected for each point of a sequence of selected points along the wellbore. For each respective point in the sequence of points, the arithmetic difference between the first and
5968255 Universal well cement additives and methods October 19, 1999
The present invention provides universal well cement additives and methods. The universal well cement additives improve the properties of a well cement slurry and can be comprised of iron chloride, a dispersing agent, an organic acid, a hydratable polymer and an ultra-fine particulate
5963508 System and method for determining earth fracture propagation October 5, 1999
Hydraulic fracture extension in earth formation zones of interest may be monitored by placing one or more monitor wells in predetermined positions on opposite sides of an azimuth aligned with the expected fracture plane extending from a fluid waste injection well. The monitor wells are
5963037 Method for generating a flow profile of a wellbore using resistivity logs October 5, 1999
A method for generating a flow profile of a wellbore whereby a resistivity tool is run through the wellbore, while the wellbore is being drilled, to sequentially measure and record, at each of a sequence of selected points along the wellbore, a sequential series of resistivities measured
5961279 Turbine power plant having minimal-contact brush seal augmented labyrinth seal October 5, 1999
A stationary gas turbine engine includes an axial compressor; a turbine; a stationary inner barrel downstream of the compressor; a brush seal including a ring-shaped holder supported by the inner barrel, and a multiplicity of inwardly extending bristle members having an ambient tempe
5959170 Methane conversion process September 28, 1999
A method for converting methane to higher hydrocarbon products and coproduct water wherein a gas comprising methane and a gaseous oxidant are contacted with a nonacidic catalyst at temperatures within the range of about 700 to 1200.degree. C. A preferred catalyst comprises an alkali
5958365 Method of producing hydrogen from heavy crude oil using solvent deasphalting and partial oxidati September 28, 1999
Heavy crude oil is recovered and processed at a refinery through (a) a distillation zone(s), (b) a solvent deasphalting unit (c ) a high pressure air partial oxidation gasifier to produce a CO-rich gas mixture including hydrogen, (d) a shift reactor and (e) a purification step to produce
5951204 Process to decontaminate soil September 14, 1999
A process for removing water-soluble contaminates from soil includes laying a mat over and in contact with the contaminated soil, applying water to the soil, permitting the water to be transferred from the soil to the mat, permitting the contaminants to be carried via the water into the
5947200 Method for fracturing different zones from a single wellbore September 7, 1999
A method for fracturing a plurality of different subterranean production zones which are spaced along a wellbore wherein flow is established into a first or lower zone while a removable sleeve blocks flow into the other upper zones. The first zone is fractured and the sleeve is then notc
5944101 Apparatus for milling a window in well tubular August 31, 1999
An apparatus for milling a window in a well tubular, e.g. a well casing, which is comprised of a whipstock and a cooperating mill. The mill has a nose portion depending from the bottom thereof and has cutting surfaces on both the bottom and the sides. The whipstock is comprised of a body

 
 
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