The present disclosure provides for a ranging and proximity detection system that includes a radiation source, the radiation source positioned within a first wellbore and a radiation detector positioned within a second wellbore.

A system includes a ground based area, an electromagnetic (EM) interrogation device having an EM emitter that directs an EM beam at the ground based area. The EM interrogation device includes a detector array that receives reflected EM radiation from the EM beam, and a controller having a ground movement description module that determines a movement profile of the ground based area in response to the reflected EM radiation.

Methods for correcting temperatures measured in producing wells are provided. In one embodiment, a method includes receiving formation fluid within a completion string in a well, wherein the formation fluid passes from a formation and radially into the completion string through at least one opening in the completion string. The method also includes measuring temperatures outside the completion string at multiple depths in the well at which the formation fluid passes from the formation and radially into the completion string. The temperatures measured outside the completion string at the multiple depths in the well are converted into axial temperatures inside the completion string at the multiple depths. Additional systems, devices, and methods are also disclosed.

Embodiment disclosed herein include systems and methods for azimuthally imaging a borehole, A logging tool having one or more gamma radiation sensors is disposed at a depth position within a borehole, with the one or more gamma radiation sensors positioned to measure gamma radiation within multiple azimuthally offset sectors. The gamma radiation sensors measure gamma radiation at one or more positions within each of the azimuthally offset sectors. A spectral gamma radiation profile is determined for three radioelements at the one or more positions within each of the azimuthally offset sectors based on the gamma radiation measurements. Concentrations of each of the radioelements are determined at the one or more positions based, at least in part, on the spectral gamma radiation profiles, A plurality of color coded points that each encode the combined concentrations of one or more of the radioelements are generated by mapping each of the determined concentrations to an axis point on each of three color coded axes that define a three dimensional display space. The color coded points are rendered in an azimuthal radioelement borehole image.

A method for wireline or logging-while-drilling systems that uses pulsed neutron sources coupled to multiple dual-function radiation detectors of neutrons and gamma rays, as well as a non-transitory computer readable memory device that can distinguish using pulse shape discrimination techniques the neutrons from the gamma rays in order to measure thermal neutron time-decay signals and thermal neutron capture gamma ray time-decay signals that are later further process using the non-transitory computer readable memory device to obtain a borehole sigma and formation sigma that are not affected by near-wellbore environments.

Systems, methods, and devices are provided for radiation detector windows that have an improved shape or density and/or provide collimation of radiation that passes through. Thus, a radiation-based logging tool may include a source that emits radiation and a detector that detects, through a detector window, a first portion of the radiation scattered off of a geological formation. The detector window may include a dome having a first surface and a second surface and a support structure that provides support for the dome. The detector window may include a window insert that shields the detector from a second portion of the radiation.

An instrumented coupling for pipe joints is described herein. The instrumented coupling includes a first threaded end configured to thread to a first pipe joint and a second threaded end configured to thread to a second pipe joint. The instrumented coupling also includes a sensor configured to obtain a measurement of a parameter of a well and a communications device configured to communicate to a receiving device outside of the well. The instrumented coupling further includes a processor configured to execute instructions in a data store. The instructions direct the processor to read the measurement from the sensor, compare the measurement from the sensor to a preset limit, and generate a signal within the communications device based, at least in part, on the measurement.

Embodiment disclosed herein include systems and methods for azimuthally imaging a borehole, A logging tool having one or more gamma radiation sensors is disposed at a depth position within a borehole, with the one or more gamma radiation sensors positioned to measure gamma radiation within multiple azimuthally offset sectors. The gamma radiation sensors measure gamma radiation at one or more positions within each of the azimuthally offset sectors. A spectral gamma radiation profile is determined for three radioelements at the one or more positions within each of the azimuthally offset sectors based on the gamma radiation measurements. Concentrations of each of the radioelements are determined at the one or more positions based, at least in part, on the spectral gamma radiation profiles, A plurality of color coded points that each encode the combined concentrations of one or more of the radioelements are generated by mapping each of the determined concentrations to an axis point on each of three color coded axes that define a three dimensional display space. The color coded points are rendered in an azimuthal radioelement borehole image.

A method of fracturing multiple productive zones of a subterranean formation penetrated by a wellbore is disclosed. The method comprises injecting a fracturing fluid into each of the multiple production zones at a pressure sufficient to enlarge or create fractures in the multiple productive zones, wherein the fracturing fluid comprises an upconverting nanoparticle that has a host material, a dopant, and a surface modification such that the upconverting nanoparticle is soluble or dispersible in water, a hydrocarbon oil, or a combination thereof; recovering a fluid from one or more of the multiple production zones; detecting the upconverting nanoparticle in the recovered fluid by exposing the recovered fluid to an excitation radiation having a monochromatic wavelength; and identifying the zone that produces the recovered fluid or monitoring an amount of water or oil in the produced fluid by measuring an optical property of the upconverting nanoparticle in the recovered fluid.

A method of fracturing multiple productive zones of a subterranean formation penetrated by a wellbore is disclosed. The method comprises injecting a fracturing fluid into each of the multiple production zones at a pressure sufficient to enlarge or create fractures in the multiple productive zones, wherein the fracturing fluid comprises an upconverting nanoparticle that has a host material, a dopant, and a surface modification such that the upconverting nanoparticle is soluble or dispersible in water, a hydrocarbon oil, or a combination thereof; recovering a fluid from one or more of the multiple production zones; detecting the upconverting nanoparticle in the recovered fluid by exposing the recovered fluid to an excitation radiation having a monochromatic wavelength; and identifying the zone that produces the recovered fluid or monitoring an amount of water or oil in the produced fluid by measuring an optical property of the upconverting nanoparticle in the recovered fluid.