Abstract: A method of determining the depth of a sidewall core sample taken from a borehole relative to a reference log of the borehole. The method includes obtaining a reference log recorded on a reference log depth scale and a borehole image log recorded on a borehole image log depth scale of a portion of the borehole from which the sidewall core sample has been taken. The method further includes generating a calibrated borehole image log from the borehole image log and the reference log and identifying a candidate sidewall core image artifact in the calibrated borehole image log. The method also includes assigning a confidence value for the candidate sidewall core image artifact based on a characteristic of the candidate sidewall core image artifact, and determining, using the confidence value, a probability that the sidewall core sample was collected at a certain depth on the reference log depth scale.

Abstract: Systems and methods identify events during a well operation. Systems and methods receive data identifying parameters for the event related to the downhole well. An interactive graphical representation of a hierarchical taxonomy for selection of a selected classification for the event is displayed. The hierarchical taxonomy includes a plurality of classifications of well operation. A tool for identification and classification for the event is presented. The tool also serves for the purpose of data collection to allow development of automatic well operation events recognition models. The data identifying the parameters for the event are compared to historic data related to a plurality of events identified with the selected classification to determine one or more performance parameters for the event.

Abstract: A method includes building a mud-gas hydrocarbon oil fraction database comprising historical data, training a machine learning model using the historical data in the mud-gas hydrocarbon oil fraction database, drilling a new wellbore, processing drilling mud returns, from the new wellbore, through a gas sampler comprising a gas chromatograph and a gas mass spectrometer, retrieving real-time mud-gas data from the gas sampler, and generating a real-time hydrocarbon oil fraction log for the new wellbore by processing the real-time mud-gas data through the trained machine learning model and producing estimated hydrocarbon oil fraction data.

Abstract: Systems and methods identify events during a well operation. Systems and methods receive data identifying parameters for the event related to the downhole well. An interactive graphical representation of a hierarchical taxonomy for selection of a selected classification for the event is displayed. The hierarchical taxonomy includes a plurality of classifications of well operation. A tool for identification and classification for the event is presented. The tool also serves for the purpose of data collection to allow development of automatic well operation events recognition models. The data identifying the parameters for the event are compared to historic data related to a plurality of events identified with the selected classification to determine one or more performance parameters for the event.

Abstract: A method of determining the depth of a sidewall core sample taken from a borehole relative to a reference log of the borehole. The method includes obtaining a reference log recorded on a reference log depth scale and a borehole image log recorded on a borehole image log depth scale of a portion of the borehole from which the sidewall core sample has been taken. The method further includes generating a calibrated borehole image log from the borehole image log and the reference log and identifying a candidate sidewall core image artifact in the calibrated borehole image log. The method also includes assigning a confidence value for the candidate sidewall core image artifact based on a characteristic of the candidate sidewall core image artifact, and determining, using the confidence value, a probability that the sidewall core sample was collected at a certain depth on the reference log depth scale.

Abstract: Disclosed are methods, systems, and computer-readable medium to perform operations including: receiving a mud gas log and a reference log of a subterranean formation; comparing a shape of a graph of the mud gas log to a shape of a graph of the reference log to determine an extent of similarity between the shape of the mud gas log graph and the shape of the reference log graph; and in response to determining that the mud gas log graph and the reference log graph have a threshold extent of similarity, transforming the mud gas log graph to track the shape of the reference log graph, wherein the transformation is performed while maintaining a total gas sum of the mud gas log.

Abstract: A wellbore radial positioning apparatus includes a tool body and a motor that actuates a traction wheel. The tool body is configured to be positioned within a wellbore. The motor driving the traction wheel is connected to the tool body and is configured to rotate the tool body in the wellbore. The traction tool is configured to frictionally contact or attach to the wellbore. The tool body is rotated in the wellbore by the action of the motor actuating the traction wheel.

Abstract: A positioning device for adjusting an axial position of a tool within a wellbore includes an anchor configured for attachment to the wellbore at a fixed axial location within the wellbore, a shaft coupled to the anchor, and a coupling member to which the tool is rigidly attached. The coupling member is configured to be translated along the shaft to adjust the axial position of the tool with respect to the fixed axial location of the anchor within the wellbore.

Abstract: A wellbore radial positioning apparatus includes a tool body and a motor that actuates a traction wheel. The tool body is configured to be positioned within a wellbore. The motor driving the traction wheel is connected to the tool body and is configured to rotate the tool body in the wellbore. The traction tool is configured to frictionally contact or attach to the wellbore. The tool body is rotated in the wellbore by the action of the motor actuating the traction wheel.

Abstract: A positioning device for adjusting an axial position of a tool within a wellbore includes an anchor configured for attachment to the wellbore at a fixed axial location within the wellbore, a shaft coupled to the anchor, and a coupling member to which the tool is rigidly attached, the coupling member configured to be translated along the shaft to adjust the axial position of the tool with respect to the fixed axial location of the anchor within the wellbore