Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 8185311 | Multiuser oilfield domain analysis and data management A method of oilfield data management including collecting oilfield data from an oilfield, executing instructions on a processor to perform a domain analysis of the oilfield data by a first analysis team to generate a first analysis, the first analysis team comprisin... | 05/22/2012 |
| 8170799 | Method for determining in-situ relationships between physical properties of a porous medium from a sample thereof A method for determining in-situ relationships between physical properties of a porous medium from a sample thereof includes acquiring a three-dimensional image of the sample and segmenting the image into pixels representing pore space and pixels representing rock g... | 05/01/2012 |
| 8145427 | Assessing petroleum reservoir production and potential for increasing production rate Determining a production gain index (PGI) for a petroleum reservoir provides a novel leading indicator and metric that is designed to quickly assess the potential for increases in production of petroleum from an operating petroleum reservoir when implementing a reco... | 03/27/2012 |
| 8135541 | Wellbore tracking Wellbore tracking by developing a wellbore deviation survey, including collecting wellbore deformation data using a caliper at each of a plurality of depths within the wellbore, collecting wellbore deviation data using a tiltmeter at ones of the plurality of depths,... | 03/13/2012 |
| 8131468 | Apparatus and methods for estimating a downhole property Apparatus and methods for estimating a downhole property are provided. The apparatus may include a downhole tool having a predetermined temperature calibration based at least in part on an expected downhole temperature and a temperature controller in communication w... | 03/06/2012 |
| 8126646 | Perforating optimized for stress gradients around wellbore A technique includes determining a stress tensor in a formation that surrounds a wellbore. The stress tensor varies with respect to the wellbore. The technique includes running a perforating charge into the wellbore to perforate the formation and performing at least... | 02/28/2012 |
| 8121788 | Method and system to automatically correct LWD depth measurements A method for correcting errors in LWD depths includes performing torque and drag model analysis using drillstring weight, downhole friction, weight on bit, thermal expansion, rig heave and tide to produce a corrected time-depth file, wherein the torque and drag mode... | 02/21/2012 |
| 8099240 | Blasting method Methods for evaluating drill pattern parameters such as burden, spacing, borehole diameter, etc., at a blast site are disclosed. One method involves accumulating the burden contributed by successive layers of rock and matching the accumulated rock burden to a target... | 01/17/2012 |
| 8078402 | Method of ranking geomarkers and compositional allocation of wellbore effluents A method of method of determining relative contributions of two or more producing subterranean sources to a total flow is described using the steps of selecting a subset from a set of identifiable components in the total flow and using the subset to determine the re... | 12/13/2011 |
| 8065085 | System and method for measuring depth and velocity of instrumentation within a wellbore using a bendable tool An apparatus and method for measuring depth, velocity, or both depth and velocity of instrumentation within a wellbore is provided. The apparatus includes a downhole portion movable within the wellbore in a direction generally parallel to the wellbore. The apparatus... | 11/22/2011 |
| 8065086 | Method for estimating missing well log data The invention relates generally to the field of oil and gas exploration and specifically to the use of well logs for exploration. This invention is directed to a method for estimating data that would have been collected in a region of a well log where there is a gap... | 11/22/2011 |
| 8065087 | Reducing error contributions to gyroscopic measurements from a wellbore survey system A method reduces error contributions to gyroscopic measurements from a wellbore survey system having two gyroscopic sensors adapted to generate signals indicative of at least one component of the Earth's rotation substantially perpendicular to the wellbore and indic... | 11/22/2011 |
| 8055446 | Methods of processing magnetotelluric signals A method for processing magnetotelluric data to identify subterranean deposits is provided for. The data comprise the amplitude of alternating magnetic or electrical fields recorded over time in at least two vector components at one or more locations in an area of i... | 11/08/2011 |
| 8055447 | System and method to measure and track fluid movement in a reservoir using electromagnetic transmission Systems and methods of enhancing crude oil recovery include radiating electromagnetic energy in the form of focused electromagnetic pulses into a permeable formation containing the crude oil and/or fluid via an array of antennae transmitting immediately in the far f... | 11/08/2011 |
| 8036829 | Apparatus for analysis and control of a reciprocating pump system by determination of a pump card An instrumentation system for assessing operation of a reciprocating pump system which produces hydrocarbons from a non-vertical or a vertical wellbore. The instrumentation system periodically produces a downhole pump card as a function of a directly or indirectly m... | 10/11/2011 |
| 8027790 | Interpretation and mapping of electromagnetic survey data A structured computer-implemented method (1000) based on graphical user interfaces for interpretation and mapping of data from a controlled-source electromagnetic survey, featuring capability to store electromagnetic data in layers (1004), each layer h... | 09/27/2011 |
| 8024121 | Data compression method for use in downhole applications Borehole image data is compressed and transmitted to the surface one pixilated trace at a time. The compression methodology typically includes transform, quantization, and entropy encoding steps. The invention advantageously provides for sufficient data compression ... | 09/20/2011 |
| 7991553 | Method and system for removing effects of conductive casings and wellbore and surface heterogeneity in electromagnetic imaging surveys Characterizing a reservoir with electromagnetic imaging surveys includes normalizing measured voltage data by transmitter moment, sorting the normalized voltage data into common receiver profiles, densely resampling transmitter locations using common positions for t... | 08/02/2011 |
| 7974785 | Method for quantitative evaluation of fluid pressures and detection of overpressures in an underground medium Method for evaluating fluid pressures in an underground zone by means of seismic and well data. The zone studied is divided into several time analysis intervals. For each of these intervals, a pre-stack stratigraphic inversion of the seismic data is then carried out... | 07/05/2011 |
| 7957903 | Gas trap for sampling fluid from a well A low maintenance adjustable gas trap with a plurality of couplings, each coupling securing to a flow line of a drilling rig; a plurality of hammer unions each engaging a coupling; a plurality of base manifold pipes, each engaging a hammer union; a base manifold flo... | 06/07/2011 |
| 7937221 | Method and apparatus for gradient electromagnetic induction well logging The method and apparatus for determining the conductivity of anisotropic formations surrounding a borehole. The method comprises measuring the gradient of the magnetic field by an electromagnetic logging tool in a borehole in the subsurface formation. The instrument... | 05/03/2011 |
| 7917293 | Method and system for controlling a well service rig based on load data The present invention is directed to methods for controlling the operations of a well service rig at a well site by evaluating load sensor data obtained from sensors on or associated with the well service rig. A rig load data chart can be reviewed and an average rig... | 03/29/2011 |
| 7912647 | Method and apparatus for measuring true vertical depth in a borehole A system for measuring a true vertical depth of a downhole tool is provided. The system includes: a first optical clock located at a first depth and having a first frequency; a second optical clock disposable at a downhole location and having a second frequency at t... | 03/22/2011 |
| 7894990 | Method of generating a deep resistivity image in LWD measurements A pseudo-image is produced by combining deep-reading azimuthally sensitive resistivity measurements with azimuthally insensitive resistivity measurements made by a multiple propagation resistivity tool. This image is useful in reservoir navigation. Features on the a... | 02/22/2011 |
| 7873475 | Device and method of measuring depth and azimuth A method of measuring depth and/or azimuth of logging data, the logging data being related to at least one property of a zone GF, CS, CA surrounding a wellbore and being measured by at least a sensor array SA1D, SA2D, the method comprising the steps of... | 01/18/2011 |
| 7873476 | Well log correlation A method of automatically correlating well logs includes selecting well loops from the well logs and creating a set of possible marker positions for each well log in each well loop. From the possible marker positions, alternate marker sets are iteratively selected. ... | 01/18/2011 |
| 7844400 | System for sampling fluid from a well with a gas trap A low maintenance adjustable system for sampling gas from a well using a gas analyzer; a conditioning and filtering device; a gas trap having a plurality of couplings, a plurality of hammer unions, a plurality of base manifold pipes, a base manifold flow line, a chi... | 11/30/2010 |
| 7826973 | Optimizing seismic processing and amplitude inversion utilizing statistical comparisons of seismic to well control data A method for obtaining enhanced seismic data and optimized inverted reflectivities includes computing statistical well characterizations based upon band-limited well reflectivities for a subsurface region. Sets of processed seismic data are computed by applying diff... | 11/02/2010 |
| 7822554 | Methods and apparatus for analysis of downhole compositional gradients and applications thereof A method and system are provided for characterizing a reservoir of interest by comparing measured downhole fluid analysis measurement data with predicted downhole fluid analysis measurement data for the corresponding depth within the reservoir. The downhole fluid an... | 10/26/2010 |
| 7813878 | Gyroscopic steering tool using only a two-axis rate gyroscope and deriving the missing third axis A two-axis gyroscope used on a bottom hole assembly can be used for determining a rate of rotation about the rotational axis of a BHA. The method takes advantage of possible misalignment of at least one axis of the two axis gyroscope from orthogonality with respect ... | 10/12/2010 |
| 7805247 | System and methods for well data compression Systems and methods in which data compression techniques are utilized to fill a predetermined channel capacity are shown. According to one configuration, event data points within test data are selected for communication via the data communication channel and a data ... | 09/28/2010 |
| 7805248 | System and method for water breakthrough detection and intervention in a production well A system and method is provided for estimating an occurrence of a water breakthrough in a production well that includes estimating, at least periodically, a measure of water in the fluid produced from one or more production zones and estimating the occurrence of the... | 09/28/2010 |
| 7756641 | Computation of sensitivity for resistivity measurements The present invention provides methods and systems for numerically computing tool response sensitivities of subterranean measurement tools such as resistivity logging tools. The methods and systems enable much faster computation of sensitivities than previously avai... | 07/13/2010 |
| 7739050 | Software-based quality control analysis of well log data Software-based quality control analysis of well log data. At least some of the various embodiments are computer-readable mediums storing a program that, when executed by a processor, causes the processor to read data from a well log, and perform a quality control an... | 06/15/2010 |
| 7739049 | Method and apparatus for multi-mode signal processing A method is disclosed that may include separating modes in a plurality of coherent time-domain signals to form a plurality of separated modes, generating frequency coherence information for each of the plurality of separated modes, and combining the frequency cohere... | 06/15/2010 |
| 7729860 | Drilling system powered by energy-harvesting sensor A method and system is provided for determining the value of an attribute of ambient energy at a drilling assembly at the bottom of a borehole. Ambient energy includes kinetic energy, hydraulic energy and thermal energy. Attributes include vibration frequency spectr... | 06/01/2010 |
| 7689362 | Determining the impedance of material behind a casing in a borehole A method for estimating an impedance of a material behind a casing wall in a borehole, the method comprises exciting the casing wall with an acoustic pulse, and measuring by means of a transducer an experimental acoustic waveform (W) reflected from the casing wall. ... | 03/30/2010 |
| 7672784 | Using statistics of a fitting function for data-driven dispersion slowness processing Dispersive array acoustic data are acquired. A histogram is determined from the semblance-frequency coherence of the data. The low frequency limit of the data is estimated by matching the statistics of the histogram to the statistics of a modeling function. ... | 03/02/2010 |
| 7660673 | Coarse wellsite analysis for field development planning A new method for assessing the probability of production at a wellsite. The process includes the four steps of: 1) Data Collection and Uncertainty Analysis; 2) Wellsite Preparation; 3) Treatment Selection/Job Execution; and 4) Evaluation and Upscaling to Field Level... | 02/09/2010 |
| 7660671 | Method and apparatus for electromagnetic logging of a formation Using an electromagnetic logging tool, desired antenna responses are synthesized from a combination of measured antenna responses, as well as antenna arrays particularly suited to provide the measurements. Those arrays may include cross dipole and double cross dipol... | 02/09/2010 |
