7 results about "Mud motor" patented technology

Systems and methods presented herein relate to forming a composite reinforcement lining. A system includes a compression molded elastomer reinforcement composite having a first layer, a second layer, and an intervening layer disposed between the first layer and the second layer. The first layer includes one or more first elastomer materials. The second layer includes one or more second elastomer materials. The intervening layer includes one or more composite reinforcement materials having a hardness greater than the one or more first elastomer materials and the one or more second elastomer materials.

This invention discloses an integrated logging-while-drilling (LOD) and measurement drill string assembly, relating to the field of oil and gas drilling engineering technology. It provides a series connection scheme for core protective drill string components, offering two switchable configurations: one with a mud motor and one without. Both configurations consist of an azimuth density neutron logging sub, a bidirectional communication power supply sub, an acoustic logging sub, a resistivity logging sub, an upper connecting sub, a flexible sub, a lower connecting sub, an azimuth gamma logging sub, and a steering actuator connected in series according to a fixed logic. The configuration with a mud motor only requires adding a mud motor at a designated location to complete the structural switch, without changing the series connection of the remaining subs. This assembly scheme is applicable to various drilling scenarios such as offshore exploration and development, deepwater drilling, complex directional wells, highly deviated wells, and horizontal wells. It enables integrated operations of geological steering, formation evaluation, and wellbore stability analysis during drilling, effectively improving drilling efficiency and reducing operational risks.

A method and a system for detecting a motor stall includes obtaining, in real time, actual or calculated values of sensors comprising at least one of a top drive torque value, a differential pressure value, a surface weight on bit value, or a top drive rotational velocity value and computing a spline representation of the sensor values or derivatives of the sensor values to obtain a spline data set. Further, the method includes determining a presence of the motor stall using the spline data set.

This invention discloses a multi-adaptive rotary steerable logging-while-drilling (LSD) assembly, belonging to the field of oil drilling technology. This assembly uses a traditional steerable actuator as its core, forming multiple integrated solutions compatible with existing logging instruments, dual-master control architectures, Russian platforms, rotary steerable systems, and next-generation integrated systems. It is compatible with both drilling conditions with and without mud motors. Component cascading is achieved through flexible subs, conversion subs, upper and lower communication subs, and extension connection components of existing logging instruments. This effectively improves the problems of poor compatibility, low integration, measurement lag, insufficient communication stability under complex conditions, and weak compatibility of existing drilling assemblies. This invention has the advantages of multi-platform compatibility, near-bit synchronous measurement, bidirectional stable communication, and integrated geological guidance, and is suitable for drilling and formation evaluation operations in directional wells, horizontal wells, and extended reach wells.

Techniques for controlling a trajectory of a mud motor directional drill. A system receives one or more inputs pertaining to constraints for a wellbore in a mud motor drilling operation. The system constructs, as a function of the one or more inputs, a discretized well depth horizon. One or more binary slide and rotate commands for controlling a directional drill within the wellbore is generated based on an analysis of the discretized well depth horizon. The system controls the directional drill according to the one or more binary slide and rotate commands.

An integrated downhole apparatus and method for the efficient clean-out of sand, soft cement, and mud sediments in vertical, deviated, and horizontal oil and gas wellbores. The tool assembly comprises a single-nozzle jet pump coupled with a cup-type packer and a detachable distal drill bit, configured for deployment via hoist systems or coiled tubing at depths up to 4000 meters, The cup packer (rubber or polyurethane, single or dual configuration, 44 / 3- to 98 / 5- inch casing) allows independent rotation of the drill bit without rotating the tubing string via an internal spring mechanism (weight-on-bit) or optional hydraulic mud motor. Surface-pumped water drives the jet pump nozzle creating a pressure differential while the rotating bit agitates and breaks down compacted sediments. The cup packer isolates the target interval, directing power fluid through the jet pump to entrain dislodged debris and lift the slurry to surface in a single trip.

The invention provides a complex multi-phase flow fluid circulation experiment device and an application method thereof, relates to the technical field of petroleum drilling downhole testing, and solves the problems that in an existing experiment, drilling fluid outlet flow needs to be tested on site, time and labor are wasted, and the measurement accuracy is low. A drilling fluid tank and a water tank of the device are respectively connected with a middle pipeline through inlet and outlet pipelines to form a circulating pipeline; the middle pipeline is connected with a flow meter; the middle pipeline is formed by connecting a horizontal pipeline, a vertical pipeline and a 45-degree inclined pipeline, and is used for realizing measurement of drilling fluid in different flowing states through the flowmeter; the experimental method comprises the following steps: when a single-phase flow test is performed, starting a slurry motor pump and a water tank to realize device circulation; when gas-liquid two-phase flow is carried out, the air compressor is started; when gas-liquid-solid three-phase flow is conducted, the drilling fluid box and the stirrer need to be started. The device can realize simulation of single-phase flow, two-phase flow and three-phase flow, and can realize accurate measurement of various flowmeter performances in laboratories.