11 results about "Mud weight" patented technology

A downhole mud motor includes a driveshaft rotatably disposed in a driveshaft housing, a bearing mandrel coupled to the driveshaft, wherein the bend adjustment assembly includes a first configuration that provides a first deflection angle between the driveshaft housing and the bearing mandrel, wherein the bend adjustment assembly includes a second configuration that provides a second deflection angle between the driveshaft housing and the bearing mandrel, and a locking assembly including a locked configuration configured to lock the bend adjustment assembly into one of the first configuration and the second configuration until the downhole mud motor has at least one of reached a predefined depth in the wellbore, and a mud weight has reached a predefined mud weight threshold at a given depth, in response to which the locking assembly is configured to actuate from the locked configuration to an unlocked configuration.

A downhole mud motor includes a driveshaft rotatably disposed in a driveshaft housing, a bearing mandrel coupled to the driveshaft, wherein the bend adjustment assembly includes a first configuration that provides a first deflection angle between the driveshaft housing and the bearing mandrel, wherein the bend adjustment assembly includes a second configuration that provides a second deflection angle between the driveshaft housing and the bearing mandrel, and a locking assembly including a locked configuration configured to lock the bend adjustment assembly into one of the first configuration and the second configuration until the downhole mud motor has at least one of reached a predefined depth in the wellbore, and a mud weight has reached a predefined mud weight threshold at a given depth, in response to which the locking assembly is configured to actuate from the locked configuration to an unlocked configuration.

Detection technology to monitor a flare stack during drilling operations and determine information based on the imaging. Various actions may be taken based on the determined information. For example, subterranean geology may be mapped. This may include mapping formation properties, fractures, faults or reservoir zones. Additionally, drilling operational parameters may be adjusted. This may include adjusting rate of direction, penetration, weight on bit, rotary speed, mud flow rate, mud weight, actuating a valve, or changing the pump speed.

The utility model relates to the technical field of weighting agents, in particular to a production device of an oil field slurry weighting agent, which comprises a bottom frame and a top plate arranged at the top of the bottom frame, a supporting seat is fixed at the top of the top plate, a charging barrel is fixed on the inner wall of the supporting seat, and the top of the charging barrel is communicated with a feeding hopper. A driving mechanism used for mixing and stirring materials is arranged in the charging barrel, a screening mechanism used for processing and granulating the materials is arranged on one side of the charging barrel, two sets of conveying mechanisms used for conveying finished product particles are arranged in the bottom frame, and a crushing mechanism used for processing raw materials is arranged at the top of the charging barrel; a bottom plate is fixed to the inner wall of the bottom frame, and supporting legs are fixed to the bottom of the bottom plate. By arranging the crushing mechanism, raw materials for production can be crushed when a slurry weighting agent is produced, so that the crushed materials are uniform in particle size and further can be mixed with an additive more uniformly, and finally the performance of a product cannot be affected.

A method for monitoring a risk to a stability of a wellbore in a subsurface formation includes receiving first input data 2024 / 243558 representing the wellbore or the subsurface formation. The method also includes extracting parameter-value pairs from the first input data. The method also includes determining an expected pore pressure gradient based upon the parameter-value pairs. The method also includes determining an expected fracture gradient based upon the parameter-value pairs. The method also includes determining a mud weight uncertainty profile for the wellbore based upon the expected pore pressure gradient and the expected fracture gradient.

Systems and methods include a method for determining drilling information. A cutting concentration in annulus (CCA) is determined while drilling a well using drilling parameters and mud properties. An effective mud weight of mud and an equivalent circulating density (ECD) of mud used in the well are determined. A bulk formation rock density (RHOB) of cuttings from the well is estimated using the ECD, a bulk density model, and a bulk density log, where the cuttings are produced by drilling the well through rock formations. A fluid formation density (RHOF) and a mud matrix formation rock density (RHOM) for the well are estimated. A porosity of geological structures through which the well is drilled and a formation resistivity factor (FR) of formations are estimated. A velocity of wave propagation of waves through the formations is evaluated. An ultimate compressive strength (UCS) is estimated for the well.

The present application provides a kind of mud specific gravity automatic control system and control method, the control system includes stake machine unit, clean water pool and slurry pool, the stake machine unit is connected with slurry pool by first conveying device for conveying slurry, and the clean water pool is connected with stake machine unit by second conveying device for conveying clean water;The stake machine unit includes stake hole, stake machine is arranged above stake hole, mud specific gravity detection device is arranged in stake hole, the mud specific gravity detection device includes concentration meter, first gear, first sensor and first processor, first sensor is by collecting the angle of rotation of concentration meter drive first gear, and then the mud specific gravity in first processor is collected, and second conveying device is driven to carry out mud specific gravity adjustment.The present application ensures high-precision measurement of mud specific gravity, and further improves work efficiency through automatic control system.

A system for determining a direction for drilling a well is disclosed. The system has a device in a portion of a conveyance mechanism comprising a cylindrical housing with at least one sensor that tracks a position of the portion during a drilling operation, the device being configured to obtain a plurality of drilling parameters, and a control system coupled to the device and configured to perform at least one reservoir simulation, and prepare a plurality of required parameters while drilling. The device uses an optimization box to simulate increasing an angle between a drilling direction and a maximum horizontal stress by calculating a minimum mud pressure required to prevent borehole collapse. The control system generates an engineering curve representative of each angle simulated and a corresponding mud weight or pressure, and the device and the control system identify an optimal direction corresponding to a minimum drilling mud pressure parameter.

The invention discloses nano excitation flow state solidified soil based on drilling muck, which is formed by mixing drilling muck slurry and a curing agent, the doping amount of the curing agent is 6%-12% of the weight of the drilling muck slurry, and the drilling muck slurry is formed by mixing drilling muck and water; wherein the curing agent comprises the following components in percentage by weight: 85%-92% of sulphoaluminate cement, 0.3%-1.0% of an underwater non-dispersing agent, 0.5%-2.0% of a nano early strength agent and 5%-10% of an active mineral admixture; the nanometer early strength agent is a nanometer C-S-H nucleating agent or nanometer lithium carbonate with the particle size smaller than or equal to 100 nm, through efficient excitation of the nanometer C-S-H nucleating agent or nanometer lithium carbonate, the 1d strength of the fluid-state solidified soil can reach 180 kPa, the 2d strength is larger than or equal to 150 kPa, the early strength is improved by 80% or above compared with traditional solidified soil, the transition time of a rotary drilling rig is shortened to 24-48 h, and the construction efficiency is greatly improved.

The present disclosure directs to a computer-implemented method for monitoring and treatment of a drilling fluid during a drilling operation by utilizing machine learning techniques. The method determines a mud density of the drilling fluid at a first predetermined time interval by measuring a mud weight (MW) of the drilling fluid. The method further performs a Marsh funnel (MF) measurement to assess a drilling fluid viscosity of the drilling fluid at the first predetermined time interval. The method further predicts a gel strength of the drilling fluid for a second predetermined time interval in real-time using an artificial neural network based on the measured mud density and the drilling fluid viscosity. The method further adjusts density of the drilling fluid to optimize well cuttings suspension and removal by adding an additive in response to the predicted gel strength.

A method for drilling a wellbore comprises using drilling mud having a mud weight less than the formation pore pressure while drilling the horizontal section, to release some formation gas to mix with the drilling mud. As the mixture flows up the wellbore annulus, the resulting pressure in the vertical section is within the mud weight window (MWW) of the weak zones, thereby maintaining wellbore stability without the need for intermediate casings. The wellbore is killed by introducing a volume of heavy mud via a circulation sub in the drill string and periodically introducing additional heavy mud to fill the void left behind by the drill string as it is pulled uphole. The ratio of light mud and heavy mud in the killed well is such that the resulting pressure in the vertical section is within the MWW of the weak zones.