An Intro to Depth Monitoring
In order to have an efficient, well-run oil platform or drilling rig operation, an asset owner must take the necessary steps and use the right equipment. Depth monitoring systems need to be effective in collecting and cataloging information about well sites while also meeting the work and safety needs of oilfield personnel.
Laversab Oilfield offers a comprehensive depth monitoring tool that combines a host of services and features in one convenient package. The Laversab Model 4210 is a standalone depth tracker with the capacity to record depth data while drilling within a well or reservoir. Relevant applications range from simple depth collection to advanced data logging and reporting. This depth tracker device is certified for use in areas with a Zone 2 classification, defined as a hazardous area in which the atmosphere contains a mixture of air and flammable substances in the form of gas, vapour, or mist that is not likely to occur in normal operation, but if it does occur, will persist for a short period only.
The Model 4210 includes easy-to-use software for sensor calibration and data recording. Existing encoder and hook-load sensors/cables can be used, or new ones can be provided. It can be stored locally or used by any external applications. If no electronic drilling recorder (EDR) is available, the standalone depth tracker can serve as an oilfield’s primary depth logger.
More About Depth Monitoring
Aside from features already mentioned, the Laversab’s Model 4210 also includes the following data formats and reporting application software features:
WITS0, or wellsite information transfer standard level 0, is a communications protocol used to transfer wellsite drilling data between computer systems using the serial streaming of pre-defined records, channels, and values.
WITSML, or well-site information transfer standard markup language, transmits wellsite data to oilfield stakeholders and archives it for future use. In addition, it calculates both time-based and depth-based measurements, as well as drilling parameters that are securely managed through the Laversab WITSML Store.
Depth vs MWD & LWD
Measurement while drilling (MWD) is a process in which a drilling rig creates a borehole or well in order to extract natural resources, while logging while drilling (LWD) is a technique of conveying well logging tools into the well or borehole. Although the terms MWD and LWD are related, MWD typically refers to directional-drilling measurements while LWD refers to measurements concerning the geological formation made while drilling.
Also known as gamma ray logging, it is a method used in many wellsite operations of measuring naturally occurring gamma radiation in order to characterize the rock or sediment in a borehole or drill hole.
Resistivity logging is a method of well logging that characterizes the rock or sediment in a borehole by measuring its electrical resistivity, which measures how strongly a material opposes the flow of electric current.
Well (or borehole) logging is the practice of keeping detailed records, also known as a well log, of the geologic formations penetrated by a borehole.
Stand-alone Depth Tracker: Model 4210
The Laversab Model 4210 is a stand-alone depth tracker, capable of recording depth data while drilling. The stand-alone depth tracker is certified for use in Zone 2 hazardous locations. It includes easy-to-use software for sensor calibration and data recording. Existing encoder and hook-load sensors/cables can be used, or new ones can be provided. Relevant application range from simple depth collection to advanced data logging and reporting.
Depth data is formatted as WITS0 and/or WITSML™. It can be stored locally or used by any external applications. If no EDR is available, the stand-alone Depth Tracker can be the primary depth logger.