A downhole tool measurement device mounting system includes a chassis with a body and a chassis axis extending through the body. A monolithic assembly is mounted on the body of the chassis. The monolithic assembly includes a sensor mounted in a block. The monolithic assembly is mounted on the body of the chassis parallel to the chassis axis such that a sensing axis of the sensor is offset from a center of the body of the chassis.

A downhole tool measurement device mounting system and method are provided. The mounting system may include a chassis and a first sensor area and a second sensor area in the chassis capable of housing a first sensor and a second sensor that measure a characteristic along a first axis and a second axis, respectively. The system may also have a sensor assembly mounted in a cavity of the chassis in a third sensor area wherein a sensing axis of the sensor assembly is orthogonal to the first and second axes, the sensor assembly having a block and an orthogonal sensor mounted in the block to form a monolithic assembly that is secured into the cavity.

An embodiment of a system for estimating a parameter of an earth formation includes at least one formation parameter sensor disposed at a first downhole component and configured to measure a parameter of an earth formation to generate formation parameter data, and one or more processors in operable communication with the at least one formation parameter sensor. The one or more processors are configured to perform: generating a mechanics model of at least one of the first downhole component and a second downhole component, the mechanics model based on geometrical data representing at least one of the first downhole component and the second downhole component; estimating a misalignment of the at least one formation parameter sensor by using the mechanics model; and correcting the formation parameter data based on the misalignment.

A method of optimising the cross-sectional shape of a logging tool sensor includes the step of, for a given major axis dimension, selecting the minor axis dimension such that for a circular borehole geometry the cross-sectional area of the space between the sensor and a said circular borehole with which the sensor is pressed into contact is minimised. Logging tools optimised according to this technique exhibit beneficial sensor stand-off characteristics.

A downhole tool measurement device mounting system and method and provided.

Well trajectory adjustment is provided. In one possible implementation, an initial 3D model of a portion of a formation in which a well is being drilled is accessed. Subsurface data associated with the formation is then used to tune the initial 3D model to create a revised 3D model. In another possible implementation, subsurface data associated with a formation in which a well is being drilled is used to tune an initial 3D model of the formation to create a revised 3D model. An initial planned trajectory of the well can also be adjusted to reach a sweet spot in the revised 3D model.

A method and system for simulating reservoir recovery include taking into account inaccuracies in well spacing due to wellbore positional uncertainty.

The present disclosure relates to the field of rock soil detection and in particular to a multi-probe nuclear magnetic resonance (NMR) rock soil in-situ monitoring system, which includes a multi-probe component, a spectrograph component, an industrial control computer and a power cable. The multi-probe component includes a shell and multiple nuclear magnetic probes disposed inside the shell. The multiple nuclear magnetic probes are respectively located at the soil layers of different depths and have different measurement frequencies. The spectrograph component is used to transmit and receive NMR-measured radio frequency signals, the industrial control computer is used to transmit a measurement instruction and perform real-time processing on the measurement data, and the power cable is connected with the multiple nuclear magnetic probes, the spectrograph component and the industrial control computer to supply power and transmit the measurement data.

A measurement vehicle includes a geophysical sensor. One or more operational sensors are configured to detect operational data related to operation of the measurement vehicle. A driving system is configured to move the measurement vehicle in a travel direction relative to a measurement point. A controller is configured to receive information from the geophysical sensor and the operational sensors, and to control the driving system based on the information.

The present invention relates to a ground subsidence detection apparatus, which is capable of continuous detection of ground subsidence, predicts the occurrence of sinkholes and thus can preemptively prevent a sinkhole from forming, and due to having a simple structure, can increase durability and reduce cost. Provided is a ground subsidence detection apparatus exhibiting an alarm color using reflection of a light source and a detection weight, which, without using a separate power source, falls due to gravity in the event of cavity formation in the ground, or falls due to ground movement when ground movement occurs.