Abstract: A pressure vessel defines an opening with a shoulder around a periphery of the opening. A door is configured to regulate access to the opening. The door is configured to compress against the shoulder when in the closed position. A first seal is between the door and the shoulder. The first seal touches an interior side of the door and the shoulder when the door is in the closed position. The first seal is configured to seal fluid within the pressure vessel. A second, active seal surrounds a periphery of the opening. The seal is actuable between an engaged position and a disengaged position regardless of a position of the door. The second, active seal touches the periphery of the door, perpendicular to the first seal, when in the engaged position and the door is in the closed position. The second, active seal is configured to seal fluid within the pressure vessel.

Abstract: A method and a system for determining reservoir pressure in a wellbore during a falloff test are provided. An exemplary method includes shutting in a wellbore, measuring pressure versus time using a wellhead sensor, calculating a reservoir pressure versus time from the measured pressure, and determining if the measured pressure has dropped to zero. If the measured pressure has dropped to zero, measuring distance from the wellhead sensor to a liquid level versus time, calculating a vertical depth versus time from the distance versus time, and calculating the reservoir pressure versus time based, at least in part, on the distance and the vertical depth of the well. The method also includes creating a falloff curve from the reservoir pressure versus time and providing the falloff curve.

Abstract: Techniques for hydraulic fracturing a subsurface formation can include using a deterministic model to simulate a deviated well comprising a casing and at least one perforation tunnel. The techniques can include determining a different statistical distribution for each of one or more parameters to the deterministic model. The statistical distributions can be determined from the log data along the measured depth within the wellbore. The techniques can include probabilistically solving the deterministic model to determine a mean and a standard deviation of breakdown pressures along the measured depth within the wellbore. The techniques can include processing the mean and the standard deviation of breakdown pressures to determine an upper bound breakdown pressure based on a level of confidence. The techniques can include drilling and completing a deviated well based on the determined upper bound breakdown pressure and injecting hydraulic fluid to cause hydraulic fracturing of the subsurface formation.

Abstract: Catalyst systems suitable for tetramerizing ethylene to form 1-octene may include a catalyst having a structure according to Formula (VI) or Formula (VII). In Formulas (VI) and (VII), X is a halogen, a (C2-C30) carboxylate, acetylacetonate, or a (C1-C30) hydrocarbyl; L1 is a neutral coordinating ligand; n is an integer from 0 to 6; Y is a (C6-C20)fluorine-substituted aryl, a (C6-C20)fluorine-substituted aryloxy, or a (C1-C20)fluorine-substituted alkoxy; and L?L is a bidentate chelating ligand. The catalyst system may also include an aluminum containing agent which includes a reaction product of an organoaluminum compound and an antifouling compound. The antifouling compound may include one or more quaternary salts.

Abstract: A solids removal apparatus for glycol reclamation includes a first tubular, a second tubular, and a strainer. The first tubular includes an open end configured to receive a brine stream including solid material. The second tubular is connected to and protrudes from the first tubular. The second tubular is configured to discharge an outlet stream. The strainer is disposed within the second tubular. The strainer is configured to prevent at least a portion of the solid material from flowing through the strainer, such that the outlet stream discharging from the second tubular has a solids content that is less than a solids content of the brine stream.

Abstract: A temperature monitoring system includes an access port configured to mount to an inspection window of a process heater that includes heating tubulars mounted in an inner volume of the process heater, the access port including at least one visual access portion configured to provide visual access to at least a portion of the heating tubulars; a flange assembly including a bore that extends from a first side configured to mount to the access port to a second side; and a thermal imaging system configured to mount to the second side of the flange assembly, the thermal imaging system including at least one thermal image capture device including a field of view through the bore of the flange of assembly and the at least one visual access portion and into the inner volume of the process heater to capture at least one image of radiation emitted from the heating tubulars.

Abstract: A method of removing condensate banking in a subsurface formation using a treatment fluid includes injecting a treatment fluid including nanoparticles and a thermochemical component, the thermochemical component including sodium nitrite and ammonium chloride, into a wellbore having condensate banking, thereby exposing the treatment fluid to subsurface formation conditions. The method further includes allowing a temperature of the wellbore to activate the thermochemical component, causing an exothermic reaction generating nitrogen gas, pressure, and heat. The method further includes allowing the treatment fluid and generated nitrogen gas to mix with the condensate banking, thereby forming a homogenous multi-phase foam and lowering hydrostatic pressure in the wellbore. The method further includes allowing the homogenous multi-phase foam to flow back to the surface due to the pressure generated by the exothermic reaction and lowered hydrostatic pressure in the wellbore, thereby removing the condensate banking.

Abstract: In an example method, a system obtains a data record indicating an anticipated change in an employment status of a user at an organization, including a data field indicating an effective time of the anticipated change. At a first time prior to the effective time, the system modifies an access privilege of the user with respect to computer resources of the organization, including (i) allowing the user to perform first operations using the computer resources between the first time and a second time subsequent to the first time, and (ii) preventing the user from performing second operations using the computer resources starting at the first time. At the second time, the system further modifies the access privilege of the user, including preventing the user from performing the operations using the computer resources starting at the second time.

Abstract: Systems, methods, and a machine readable medium for measuring conductivity in a hydrocarbon sample are provided. An example conductivity analyzer includes a peristaltic pump to flow the hydrocarbons over a temperature controller and a conductivity probe. The temperature controller includes a Peltier block. The conductivity analyzer also includes the conductivity probe.

Abstract: A method that includes transforming a relative amplitude preserved 3D seismic volume acquired in the time-domain into a plurality of isofrequency volumes, extracting from the plurality of isofrequency volumes a first isofrequency spectral amplitude volume and a second isofrequency spectral amplitude volume. The method further includes determining an attribute volume from the two isofrequency spectral amplitude volumes, and determining a presence of gas in a subterranean region of interest based on the attribute volume.

Abstract: An automatic online analyzer validation and calibration system receives operating parameter input signals from sensors, receives a measured value of a selected process variable from a physical analyzer, determines a difference between the measured value and an inferred value of the selected process variable determined by a controller based on the operating parameter input signals using an inferential analyzer; and if the difference between the measured value and the inferred value exceeds a threshold, initiates a recalibration of the physical analyzer or recalibration of the inferential analyzer. In one example, the automatic online analyzer validation and calibration is used in a gas dehydration system to validate and calibrate a physical moisture analyzer.

Abstract: Methods and systems for improving the efficiency of ALFT are disclosed. The methods include obtaining a seismic dataset of a subterranean region, generating a window function, transforming the seismic dataset from a first domain to a second domain using a transform function, and transforming the window function from the first domain to the second domain using the transform function. The methods also include generating an input spectrum from the transformed seismic dataset, iteratively, or recursively, until a condition is met, for each slice, estimating a weight function, generating a weighted input spectrum, identifying a strongest attribute, determining an output spectrum based on the identified strongest attribute, and updating the input spectrum by removing the identified strongest attribute.

Abstract: A security tool includes a vulnerability classifier for classifying vulnerabilities based on an assessment report, an exploitability classifier for determining an exploitability level for a vulnerability of a list of vulnerabilities of the assessment report based on data of an intelligence feed, a risk classifier for calculating an overall risk level for a computer application associated with the vulnerability of the list of vulnerabilities based on an impact score for the computer application, and a remediation prioritizer to determine an order of remediation for the computer application and to generate a remediation prioritization report including the order of remediation.

Abstract: An submarine cable system includes a first and a second submarine cable circuit branches arranged in parallel between an onshore BSP and an offshore BSP, and a first and a second bus reactor circuits arranged in parallel and connected to the onshore BSP. The first and second submarine cable circuit branches each includes a first circuit breaker, a submarine cable circuit, and a second circuit breaker connected in series, a first line reactor of which one end is grounded and another end is connected between the submarine cable circuit and the first circuit breaker, and a second line reactor of which one end is grounded and another end is connected between the submarine cable circuit and the second circuit breaker. The first and second bus reactor circuits each includes a bus reactor and a circuit breaker connected in series. An example switching method for this system is also disclosed.

Abstract: A method may include obtaining seismic data regarding a geological region of interest. The seismic data may correspond to a seismic survey that is divided into various bins in a predetermined bin grid. The method may further include determining a first multiblock bin within the seismic survey. The first multiblock bin may correspond to a source bin and a receiver bin among the bins. The method may further include determining traveltime table data using the seismic data and various multiblock bins that include the first multiblock bin. The method further includes determining migrated data using the seismic data, the traveltime table data, a velocity model, a migration function, and various parallel processors. The method further includes generating a seismic image of the geological region of interest using the migrated data.

Abstract: method for characterizing an oil well may include obtaining measurements of petrophysical properties relating to the oil/gas or water well, obtaining a computer-aided tomography index measured on a core sample relating to the well that is matched to geochemical concentration from geochemical logs or rock-analysis, correcting the measurements of petrophysical properties as a function of the computer-aided tomography index, and developing a model of a subterranean formation using the measurements that were corrected.

Abstract: A flapper holder tool may have a tubular body defining a bore extending a length from a first end to a second end. Additionally, a lip may extend radially outward at the first end. Further, an internal fish neck may be provided on an inner surface of the tubular body. The second end of the tubular body may be configured to engage a flapper of a tubing-retrievable subsurface safety valve.

Abstract: A lower completion screen, for operating in a wellbore, includes: a body; a screening surface disposed on the body, wherein the screening surface includes a plurality of holes; a plurality of rollers disposed on the body; and a power system. A first group of the plurality of rollers is disposed on a first end of the body, and a second group of the plurality of rollers is disposed on a second end of the body. The power system is disposed on the second end of the body, and controls movement of the lower completion screen in the wellbore.

Abstract: The present disclosure relates to systems and/or methods for automatically collecting and evaluating PI data from one or more controllers of a production facility. For example, various embodiments described herein can relate to a method for evaluating the performance of a production facility that includes establishing an authenticated connection with a performance indicator server in accordance with a defined schedule. The performance indicator server stores data from one or more controllers that manage assets of a production facility. The method can include automatically evaluating a performance of the production facility, via a performance evaluation algorithm, in response to collecting performance indicator data via the authenticated connection.

Abstract: A sample while logging tool for downhole fluid sampling and production logging may include a sample collector sub and a sensor sub. The sample collector sub may include a body defining a bore extending from a first end to a second end. One or more sample chambers may be housed in the bore. The sample chamber may collect a fluid sample. At least one probe may be coupled to the sample chamber to measure fluid properties of the collected fluid sample within the sample chamber and transmit the fluid properties. A piston may be coupled to the first end having a gate distal to the first end. The piston may be actuated to open and close an opening of the sample chamber. Additionally, the sensor sub may measure and transmit data on fluids within a well to form production logging data.