Abstract: The present disclosure provides methods and systems for monitoring a drilling system, including methods and systems for estimating the life consumption of downhole drilling tools. The system employs a plurality of sensors that provide sensor signals related to the status of components in the drilling system. The sensor signals are analyzed using Functional Principal Component Analysis (FPCA) to give estimations for one or more performance metrics, including the life consumption of downhole drilling tools.

Abstract: The present disclosure provides a managed pressure drilling (MPD) system and methods for assessing and optimizing. For example, reliability models such as Failure Modes and Effects Analysis (FMEA), Fault Tree Analysis (FTA), Ishikawa diagram, Pareto chart, Reliability Block Diagram (RBD) are used in assessing the system reliability. The MPD drilling system is suitable for offshore drilling operations.

Abstract: The present disclosure provides the printed circuit board assembly suitable for operating downhole at high temperatures. The printed circuit board assembly has a ceramic circuit board with a plurality of chips installed on it. At least one of the chips has an aluminum nitride or a silicon nitride substrate. In some of the chips, aluminum nitride is used as the oxide layer in a Si-on-Insulator configuration. In other chips, integrated circuits are fabricated on a substrate made from aluminum nitride, silicon nitride, silicon carbide, or sapphire.

Abstract: A method and apparatus for estimating a time to failure of an electronic component used in a downhole environment is disclosed. A stress is applied to the electronic component to cause failure of a plurality of prognostic sensors associated with the electronic component, wherein the stress level at which a prognostic sensor fails is indicative of a stress level at which the electronic component fails. Failure times are obtained due to the applied stress for the plurality of prognostic sensors. A trend is determined from the obtained failure times of the prognostic sensors. The time of failure of the electronic component is estimated from the determined trend.

Abstract: A manufacturing method for a stator structure and a micromotor having the same. The method includes: providing a flexible printed circuit (FPC) on which configuration positions of coil windings and a configuration position of at least one position signal generating unit are formed, wherein the FPC is further provided with an interface part; disposing the coil windings and the position signal generating unit on the coil winding configuration positions and the position signal generating unit configuration position, respectively, wherein the interface part is further provided with a connector pattern which is electrically coupled with the coil windings and the position signal generating unit; forming a FPC assembly including the coil windings and the position signal generating unit; and winding the FPC assembly to form the stator. The stator is applied in a micromotor in which a rotor, the stator and a case are disposed outward in a radial direction.

Abstract: A method, apparatus and computer-readable medium for determining a lifespan of an electronic component in a downhole environment is disclosed. A first wear-out model is created that is related to a selected electronic component. A physical condition of the selected electronic component is examined at a selected examination time. The physical condition is generally due to the downhole environment in which the electronic component is disposed. A second wear-out model for the selected electronic component is created from the first wear-out model and the examined physical condition of the selected electronic component.

Abstract: A method and apparatus for estimating a time to failure of an electronic component used in a downhole environment is disclosed. A stress is applied to the electronic component to cause failure of a plurality of prognostic sensors associated with the electronic component, wherein the stress level at which a prognostic sensor fails is indicative of a stress level at which the electronic component fails. Failure times are obtained due to the applied stress for the plurality of prognostic sensors. A trend is determined from the obtained failure times of the prognostic sensors. The time of failure of the electronic component is estimated from the determined trend.

Abstract: A stator structure, a micromotor having the same, and a micromotor manufacturing method therefor are provided. In the micromotor configured with the stator, a rotor, the stator and a case are disposed outward in a radial direction. The rotor is pivotly connected in the case and the stator includes a FPC assembly which is configured with a plurality of coil windings and at least one position signal generating unit and is circumferentially disposed between the rotor and the case, with the rotor as the axis. Configuration positions of the coil windings and the position signal generating unit are corresponding to magnetic poles of the rotor.