Houston, TX, United States
Houston, TX, United States

Apache Corporation is an American independent oil and gas corporation. It is headquartered in 1 Post Oak Central in the Uptown district of Houston, Texas.Apache has become a large multinational company, with regional offices and operations in the United States, Argentina, Australia, Canada, Egypt and UK North Sea.The company's proved reserves at year-end 2010 totaled 2.95 billion barrels of oil equivalent, roughly half oil and half natural gas. Wikipedia.

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A method for analyzing total oil in place and fraction that is movable oil in a fine grain rock formation includes monitoring thermal extraction of hydrocarbon and non- hydrocarbon compounds from a sample of a subsurface formation by heating the sample. The heating has a selected initial temperature, and a temperature increase at a selected rate to a final temperature. The extracted hydrocarbon and non-hydrocarbon compounds are passed through a capillary column to a flame ionization detector. Types of hydrocarbon and non-hydrocarbon compounds and relative fractional amounts of each type thereof are determined from the sample by analyzing a chemical thermogram generated by the flame ionization detector.


A method for analyzing total oil in place and fraction that is movable oil in a fine gain rock formation includes monitoring thermal extraction of hydrocarbon and non-hydrocarbon compounds from a sample of a subsurface formation by heating the sample. The heating has a selected initial temperature, and a temperature increase at a selected rate to a final temperature. The extracted hydrocarbon and non-hydrocarbon compounds are passed through a capillary column to a flame ionization detector. Types of hydrocarbon and non-hydrocarbon compounds and relative fractional amounts of each type thereof are determined from the sample by analyzing a chemical thermogram generated by the flame ionization detector.


Patent
Apache Corporation | Date: 2015-06-15

A method for seismic surveying includes deploying a group of vertically sensitive seismic particle motion responsive sensors at each of a plurality of geodetic survey positions. The groups each include at least two sensors spaced apart by a first selected horizontal distance. The groups are separated from each other by a second selected distance larger than the first distance. Signals detected by each of the sensors resulting from actuation of a seismic energy source are recorded. At least one of an in-line and a cross-line component of a gradient of the vertical component of the seismic wavefield is determined at each group location by determining a difference between the signals detected by each sensor in a respective group.


Patent
Apache Corporation | Date: 2015-04-29

A method for optimizing a well production forecast includes a) inputting initial production rate measurements made at selected times, b) inputting probability distributions to estimate production forecast model parameters, c) generating an initial forecast of fluid production rates and total produced fluid volumes using a selected production forecast model, d) at a time after a last one of the selected times, comparing the initial forecast with actual production rate and total produced fluid volume measurements to generate an error measurement, e) adjusting parameters of the selected production forecast model to minimize the error measurement, thereby generating an adjusted production forecast model, f) repeating (d) and (e) for a plurality of iterations to generate a plurality of production forecast models each having a determined likelihood of an error measurement and displaying the plurality of production forecast models with respect to likelihood of error.


The present disclosure pertains to materials for CO_(2 )adsorption at pressures above 1 bar, where the materials include a porous carbon material with a surface area of at least 2800 m^(2)/g, a total pore volume of at least 1.35 cm^(3)/g, and a carbon content of 80%-95%. The porous carbon material is prepared by heating organic polymer precursors or biological materials in the presence of KOH at 700 C.-800 C. The present disclosure also pertains to materials for the separation of CO_(2 )from natural gas at partial pressures above 1 bar, where the material includes a porous carbon material with a surface area of at least 2000 m^(2)/g, a total pore volume of at least 1.00 cm^(3)/g, and a carbon content of greater than 90%. The porous carbon materials can be prepared by heating organic polymer precursors or biological materials in the presence of KOH at 600 C.-700 C.


Patent
Lawrence Livermore National Laboratory and Apache Corporation | Date: 2016-08-02

A system for cementing a wellbore penetrating an earth formation into which a pipe extends. A cement material is positioned in the space between the wellbore and the pipe by circulated capsules containing the cement material through the pipe into the space between the wellbore and the pipe. The capsules contain the cementing material encapsulated in a shell. The capsules are added to a fluid and the fluid with capsules is circulated through the pipe into the space between the wellbore and the pipe. The shell is breached once the capsules contain the cementing material are in position in the space between the wellbore and the pipe.


A method for selecting core points in subsurface formations includes selecting a zone from at least one subsurface formation. At least one statistical measure of at least one petrophysical measurement with respect to position along the selected zone is calculated. A predetermined number of core points at randomly selected positions along the selected zone is selected The at least one statistical measure is calculated for the randomly selected positions. Using a Monte Carlo iteration, the positions along the selected zone are randomly reselected and the at least one statistical measure is recalculated for the randomly reselected points until the at least one statistical measure for the randomly selected points is a maximum for a user selected statistical criterion applied to the at least one statistical measure of at least one petrophysical measurement with respect to position along the selected zone.


Patent
Apache Corporation | Date: 2016-05-06

Methods and systems of enhanced carbon dioxide recovery from an inlet gas stream are provided, by introducing the gas stream to one or more membrane-based separation units to produce a permeate byproduct gas stream having increased concentration of carbon dioxide compared to the inlet gas stream and then introducing the permeate byproduct gas stream to one or more pressure swing adsorption units or trains to enhance recovery of hydrocarbons, such as methane, lost in the byproduct stream and to produce a substantially pure carbon dioxide stream, while minimizing process compression and eliminating process heat for process regeneration. The methods introduced herein are for enhancing product recovery by enhancing carbon dioxide recovery from gas streams with pressures greater than atmospheric conditions. Further refinement to the methods would be the introduction of hydrogen sulfide polishing units within the process to produce product that meets or exceeds sales quality specifications.


A method for removing acid-gases from water includes introducing acid into a flow of aqueous solution having acid-gases and associated conjugate bases having an initial pH to lower the pH. The lowered pH solution has a stripping gas passed therethrough, resulting in a vapor phase of liberated acid-gas and stripping gas vapors, and a liquid phase comprising a lower concentration of acid-gases and associated conjugate bases than the aqueous solution. The liberated acid-gas and stripping gas vapors are collected and treated to remove acid-gas components, resulting in clean stripping gas product. The liquid phase is separated and collected with a second treating step, resulting in a final aqueous product having a lower concentration of acid-gases and associated conjugate bases than the liquid phase.


A pressure swing adsorption (PSA) system and a PSA process including a PSA cycle schedule are disclosed. The PSA cycle schedule includes an unlimited number of equalization steps, no idle steps, no dead time and a minimum number of three PSA adsorbent beds assisted with two or more equalization tanks. The PSA system, process and cycle schedule include the following sequence of cycle steps: a feed step, two or more down equalization steps either between beds or between a bed and a tank, an optional forced cocurrent depressurization step coupled with a forced intermediary light end pressurization step, a countercurrent depressurization step, a light reflux step, two or more up equalization steps between beds or between a bed and a tank, an optional forced intermediary light end pressurization step coupled with the forced cocurrent depressurization step, and a light product pressurization step.

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