Abstract: A shaker screen system for use during a well-drilling operation at an oilfield involves the use of a shale shaker and a main container that stores an assortment of replacement screens for the shaker. Each screen has an affixed ID marker (e.g., an RFID tag). An ID reader monitors the inventory of screens in the main container. As screens are removed from the main container and installed in the shaker, the ID reader collects and records data pertaining to the event along with other related events such which screen was removed, who removed it, when was it removed, etc. The data provides a recorded history of events that are wirelessly transmitted to a remote offsite location. In some examples, the shale shaker destroys the ID marker to ensure the used screen is not later mistaken for a new one.

Abstract: H2S (hydrogen sulfide) alarm methods include automated systems for creating reports, initiating different safety drills and/or recording certain calibration and bump tests. The methods being automated reduces the chance of human error and falsified records. The H2S alarm methods are particularly useful for ensuring the safety of workers at remote worksites.

Abstract: H2S (hydrogen sulfide) alarm methods include automated systems for creating reports, initiating different safety drills and/or recording certain calibration and bump tests. The methods being automated reduces the chance of human error and falsified records. The H2S alarm methods are particularly useful for ensuring the safety of workers at remote worksites.

Abstract: H2S (hydrogen sulfide) alarm methods include automated systems for creating reports, initiating different safety drills and/or recording certain calibration and bump tests. The methods being automated reduces the chance of human error and falsified records. The H2S alarm methods are particularly useful for ensuring the safety of workers at remote worksites.

Abstract: H2S (hydrogen sulfide) alarm methods include automated systems for creating reports, initiating different safety drills and/or recording certain calibration and bump tests. The methods being automated reduces the chance of human error and falsified records. The H2S alarm methods are particularly useful for ensuring the safety of workers at remote worksites.

Abstract: An H2S (hydrogen sulfide) monitor includes a hydrogen sulfide sensor and a moisture sensor. In some examples, the H2S monitor emits a moisture alarm if the moisture sensor detects liquid water in an amount that exceeds or approaches a moisture tolerance limit of the hydrogen sulfide sensor. In some examples, the moisture sensor prevents the hydrogen sulfide sensor from triggering a false H2S alarm caused by moisture contaminating the hydrogen sulfide sensor.

Abstract: A person-carried portable transceiver unit informs a remote home base of the person's activities, location, and/or exposure to a toxic gas. The person uses the portable transceiver unit for sending different predetermined chosen text messages to the home base. In some examples, the particular message is chosen by the number of times the person sequentially triggers a single switch on the unit. In cases where the single switch is a pushbutton, pressing the button three times, for example, could indicate the person is heading to a worksite, and pressing the button four times could indicate the person arrived at the worksite. For the home base to determine whether the person is still conscious and alert while at the worksite, the home base periodically sends to the portable unit reminder signals that prompt the person for a certain response, such as, for example, the person pressing the button twice in succession.

Abstract: A method allows an H2S alarm system installed at a remote wellsite to be monitored and configured from a distant location. Alert-signals from the alarm system to the distant location and configuration settings from the distant location to the alarm system can be transmitted using the text-messaging feature of a conventional cell phone. The cell phone, for example, can send the H2S alarm system a text message that sets the H2S concentration threshold at which the alarm system triggers an alert. When the H2S concentration reaches the threshold or a fault occurs with the alarm system, the system can send the cell phone a text message that describes the problem, identifies the location of the wellsite, and lists the names and telephone numbers of those that should be notified.

Abstract: A mobile system travels with a work crew to various remote well sites and monitors the presence of H2S (hydrogen sulfide gas) at those sites. If the concentration of H2S reaches a toxic level, the system notifies a distant host computer of not only the problem but also where the problem exists. Help can then be dispatched to the known area. In some embodiments, the system notifies the work crew when help is on the way.

Abstract: A person-carried hydrogen sulfide instrument is adapted for use with a conventional SCADA system or other type of fault monitoring system normally intended for monitoring well-related conditions at a well site. In response to detecting an abnormally high concentration of hydrogen sulfide gas, the instrument triggers the fault monitoring system to record an H2S fault and convey that information to a remote computer. In some embodiments, the instrument includes a signal relay unit that listens to a conventional H2S monitor. The signal relay unit has a learning mode that teaches the unit to recognize an audible alarm from the H2S monitor. In response to hearing the H2S alarm, the signal relay unit emits a trigger signal to the fault monitoring system.

Abstract: A mobile system travels with a work crew to various remote well sites and monitors the presence of H2S (hydrogen sulfide gas) at those sites. If the concentration of H2S reaches a toxic level, the system notifies a distant host computer of not only the problem but also where the problem exists. Help can then be dispatched to the known area. In some embodiments, the system notifies the work crew when help is on the way.

Abstract: A person-carried hydrogen sulfide instrument is adapted for use with a conventional SCADA system or other type of fault monitoring system normally intended for monitoring well-related conditions at a well site. In response to detecting an abnormally high concentration of hydrogen sulfide gas, the instrument triggers the fault monitoring system to record an H2S fault and convey that information to a remote computer. In some embodiments, the instrument includes a signal relay unit that listens to a conventional H2S monitor. The signal relay unit has a learning mode that teaches the unit to recognize an audible alarm from the H2S monitor. In response to bearing the H2S alarm, the signal relay unit emits a trigger signal to the fault monitoring system.