Abstract: A stratigraphic analysis of a subject wellbore may include determining a heat map curve indicative of misfit values between stratigraphic vertical depth obtained using logged data from an offset wellbore and measured depth over a depth range of the wellbore. A first likelihood that the target measured depth is equal to or within a tolerance of stratigraphic vertical depth respectively for each of a sets of sequences of stratigraphic vertical depth may be calculated. Also, a probability weighted average and an uncertainty that the target measured depth is equal to or within a tolerance of stratigraphic vertical depth may be calculated. A continuous probability function over a range of measured depth that the target measured depth is equal to or within a tolerance of stratigraphic vertical depth may also be calculated. The first likelihood, the probability weighted average, the uncertainty, and the continuous probability function may be used to make and evaluate drilling decisions of the wellbore.

Abstract: Systems and methods for using stratigraphic heat maps to steer a well being drilled. Data from one or more offset wells can be provided to a computer system and used with data from a well being drilled to generate one or more stratigraphic heat maps during the drilling of the subject well. The stratigraphic heat maps can be displayed and used to determine the location of the wellbore relative to one or more geological formations, including one or more target formations or within a target formation. Based on the use of the heat maps and the location of the wellbore relative to a target, the drill plan can be adjusted or updated and/or one or more drilling parameters or operations may be adjusted to drill the wellbore, such as to drill the wellbore to the target or to maximize the length of the wellbore within a target zone.

Abstract: A method and system for geosteering may generate a misfit function using a spline function. The misfit function may be used to accurately map errors or differences between TVD-based measurement data for one or more reference wells and MD-based measurement data collected during drilling of a subject well, in order to accurately determine a stratigraphic location of the subject well.

Abstract: Packaging plant data exchange comprising at least one intermediate store for packaging plant status data comprising status values, at least one data input interface, the data input interface communicating with at least one program module adapted to a packaging device of the packaging plant, characterized in that the program module creates a machine data object comprising at least metadata of the packaging device via a data input interface.

Abstract: A method and system for simulating reservoir recovery include taking into account inaccuracies in well spacing due to wellbore positional uncertainty.

Abstract: A method for correcting geomagnetic reference field includes measuring Earth magnetic field elements at least one known geodetic position. Earth magnetic field elements are measured at a position proximate the location. A disturbance function is determined from the Earth magnetic field measurements made at the at least one known geodetic position. A magnetic disturbance field measurement transfer function is estimated between the at the at least one known geodetic and proximate positions to estimate a disturbance function at the proximate position. The estimated magnetic disturbance function is used to correct geomagnetic reference field or measurements made at the location.

Abstract: A system and method for magnetic survey uses an autonomous vehicle configured to traverse over the area in a grid pattern with a magnetometer coupled to the autonomous vehicle and configured to obtain magnetic measurements at a controlled rate, the magnetometer obtaining a uniform sampling of the magnetic measurements in each grid of the grid pattern; and a processor configured to obtain the magnetic survey based on the magnetic measurements.

Abstract: A method of drilling a wellbore to a target includes measuring attitudes at two adjacent survey stations along a wellbore using a downhole surveying tool. An actual change in wellbore position over a survey leg linking the two survey stations is determined. Corrections are applied to the measured attitude at one or both of the survey stations such that a modeled well path joining the survey stations reflects the determined actual change in wellbore positon between the two survey stations.

Abstract: A method of validating a directional survey includes measuring the gravity and magnetic field vectors using a surveying tool and computing an overall statistical distance of the measurement. The statistical distance may be calculated from reference values associated with the surveying tool using corresponding surveying tool codes with error values. In a further aspect, an error covariance matrix may be used to determine whether the new errors m a survey are consistent or not with errors from one or more previous surveys.

Abstract: A system and method of drilling a wellbore to a target may include measuring attitudes at two adjacent survey stations along a wellbore using a downhole surveying tool. An actual change in wellbore position over a survey leg linking the two survey stations may be determined. Corrections may be applied to the measured attitude at one or both of the survey stations such that an estimated well path joining the survey stations indicates the determined actual change in wellbore position between the two survey stations.

Abstract: A method of improving quality of directional surveys includes receiving from a first location raw survey data acquired by a survey tool configured to make a survey measurement from a wellbore. The quality of the raw survey data is verified using at least one quality control metric. The verified raw survey data is stored in a database in a cloud.

Abstract: A method and system for simulating reservoir recovery include taking into account inaccuracies in well spacing due to wellbore positional uncertainty.

Abstract: A system and method for magnetic survey uses an autonomous vehicle configured to traverse over the area in a grid pattern with a magnetometer coupled to the autonomous vehicle and configured to obtain magnetic measurements at a controlled rate, the magnetometer obtaining a uniform sampling of the magnetic measurements in each grid of the grid pattern; and a processor configured to obtain the magnetic survey based on the magnetic measurements.

Abstract: A method for correcting geomagnetic reference field includes measuring Earth magnetic field elements at least one F G known geodetic position. Earth magnetic field elements are measured at a position proximate the location. A disturbance function is determined from the Earth magnetic field measurements made at the at least one known geodetic position. A magnetic disturbance field measurement transfer function is estimated between the at the at least one known geodetic and proximate positions to estimate a disturbance function at the proximate position. The estimated magnetic disturbance function is used to correct geomagnetic reference field or measurements made at the location.

Abstract: A method of assigning geophysical reference values to a well trajectory includes defining a set of geophysical reference parameters and assigning a range threshold to each geophysical reference parameter. A Geomodel is processed to determine values of the geophysical reference parameters at a plurality of locations along the well trajectory. The well trajectory is partitioned into a plurality of segments such that variations in the values of the geophysical reference parameters within each segment do not exceed the respective range thresholds. A representative value of each geophysical reference parameter is calculated for each segment and stored or displayed along with the segments.

Abstract: For the precise, low-cost measurement of the power loss of a solar installation (17) caused by dirt. The device comprises: a first photovoltaic cell (1) for transforming solar energy into a first current (8); cleaning means (4) of the first cell (1); a second photovoltaic cell (2) for transforming solar energy into a second current (9); a first voltmeter (10) and a second voltmeter (11) for measuring the electric current of the first voltage (8) and the second voltage (9); and a control module (12) for comparing the measurements of the voltmeters (10, 11) and determining the power drops.