111 results about "Weight on bit" patented technology

The invention provides a petroleum drilling geomechanical characteristic estimation method based on deep learning, and aims to solve the problems of high measurement cost and poor real-time performance of shear wave velocity Vs in traditional geomechanical analysis by fusing logging while drilling LWD data and real-time drilling engineering parameters. According to the method, a Transformer model is adopted to carry out depth correction on logging-while-drilling data, depth offset of a drill bit and a logging sensor is eliminated, and real-time drilling parameters such as torque T, bit pressure WOB and drilling speed ROP are combined and input into a multi-layer perceptron MLP network to predict the shear wave speed Vs. And further calculating key geomechanical parameters based on the predicted shear wave velocity Vs. In practical application, the method improves the shear wave velocity prediction accuracy to 97.2%, the mean absolute error MAE of the shear modulus is reduced from 0.186 to 0.059, and the bulk modulus is reduced from 0.189 to 0.040. The method can be used for outputting stratum elastic parameters, optimizing bit pressure, pre-warning well wall instability and adjusting a well track, well drilling safety and efficiency are improved, and meanwhile dependence on an expensive well logging technology is reduced.

The invention discloses a mucky clay pile foundation drilling parameter regulation and control method and system, and belongs to the technical field of pile foundation drilling construction.The method comprises the steps that historical construction data of mucky clay pile foundation drilling is collected and preprocessed, and a data set is constructed; constructing and training a machine learning model based on the data set to obtain a drilling parameter time sequence prediction model; actual drilling parameters in the drilling process are collected in real time and compared with predicted drilling parameters output by the model, and drilling parameter errors are determined; and dynamically adjusting the drilling parameters of the drilling machine based on the drilling parameter error. According to the method, key parameters such as the drilling pressure, the rotating speed and the slurry concentration are intelligently regulated and controlled, so that the pile foundation construction efficiency and the hole forming quality in the complex soft soil stratum are improved, the construction risk is reduced, and the engineering safety is ensured.

A drilling system and techniques for managing dynamic load during drilling operations. The system includes a drilling device prone to propagate a dynamic load such as vibration and / or shock during drilling and electronics that may be susceptible to such dynamic loads. Thus, a control unit is provided that is configured for communications with both the electronics and with equipment directing the drilling operations. The unit also accommodates processing for directing the operations in terms of adjustment to drilling device rpm and / or weight on bit as applied to the device depending on monitoring of the dynamic load and in light of certain dynamic thresholds. Thus, real-time operational adjustments may be made to avoid dynamic load damage to electronics while maintaining efficient drilling operations.

A method of monitoring the wear of a drill bit of a drilling system is provided. The method includes drilling into a formation using the drill bit of the drilling system, obtaining a weight-on-bit (“WOB”) from sensors of the drilling system, and obtaining a torque-on-bit (“TOB”) from the sensors of the drilling system. A bit damage indicator (“BDI”) is determined that is correlated with the wear of the drill bit based on a relationship between the WOB and the TOB.

The invention discloses a drilling parameter multi-objective optimization method based on an ant colony optimization algorithm-DeepAR model, relates to the technical field of petroleum and natural gas engineering drilling parameter optimization, can predict the mechanical drilling speed in a period of time in the future, and has input and output with adaptive length. Based on a mechanical drilling speed mathematical model, a mechanical specific energy mathematical model and a drill bit wear mathematical model, a multi-objective optimization model is established on the basis of a mechanical drilling speed prediction model, an objective function is optimally solved through a multi-objective optimization algorithm, and three parameters of drilling pressure, rotating speed and displacement are optimized. An intelligent algorithm based on an ant colony optimization algorithm is adopted, and while-drilling multi-target, interactive and dynamic drilling parameter optimization is achieved. The problems that a mechanical drilling speed prediction model is poor in stability, the complex dependency relationship among long-distance drilling data parameters cannot be accurately captured, and a drilling parameter optimization objective function is single and excessively depends on a complex physical drilling speed equation are solved.

The present application discloses a downhole WOB and torque measurement method and system, which relates to the field of drilling measurement. The method sets vibration measurement sensors at both ends of the drill collar; during the drilling process, the axial acceleration and tangential acceleration of the two ends of the drill collar are measured in real time by the vibration measurement sensors; the axial relative displacement between the two end sections of the drill collar is calculated based on the axial acceleration at both ends of the drill collar; the relative angular displacement between the two end sections of the drill collar is calculated based on the tangential acceleration at both ends of the drill collar; based on the axial relative displacement between the two end sections of the drill collar, the WOB experienced by the drill collar is obtained by using the relationship between WOB and axial relative displacement; based on the relative angular displacement between the two end sections of the drill collar, the torque experienced by the drill collar is obtained by using the relationship between torque and relative angular displacement. The present application proposes a new WOB and torque measurement method, which is simple to operate, has strong anti-interference performance, and can improve the measurement stability and adaptability of downhole WOB and torque.

The present application provides a kind of formation threshold WOB and threshold torque determination method and device, belong to drilling engineering technical field, the method includes: obtaining different preset top drive speed under, in the preset WOB interval, the mechanical drilling speed, torque value and drill bit vibration parameters corresponding to different WOB value;For each preset top drive speed: based on the WOB value of the preset top drive speed and the mechanical drilling speed corresponding to the WOB value, determine the initial threshold WOB of the preset top drive speed from the WOB value;Based on the initial threshold WOB of the preset top drive speed, the torque value corresponding to the preset top drive speed is determined as the initial threshold torque of the preset top drive speed;Based on the drill bit vibration parameters corresponding to initial threshold WOB, initial threshold WOB and initial threshold torque are corrected, and formation threshold WOB and formation threshold torque are obtained.The present application has the advantages of simple calculation method, more accurate result, can effectively guide the selection of drill bit and screw rod, improve the mechanical drilling speed, and improve the rock breaking efficiency.

This invention relates to the field of exploration and development, and discloses a method, system, and equipment for quantitative analysis of friction resistance in directional drilling. The method includes: acquiring logging information and drill bit speed in the drilled section; constructing a drilling speed prediction model using the drill bit speed and the composite drilling data; determining a bottom hole pressure prediction model based on the directional drilling data and the drilling speed prediction model; combining the bottom hole pressure prediction model with the surface pressure to determine a drill string axial friction resistance model; and calculating the axial friction resistance in the real-time directional drilling process using the drill string axial friction resistance model based on the logging information and drill bit speed. The quantitative friction resistance analysis method disclosed in this application solves the problem of difficulty in accurately assessing bottom hole pressure and axial friction resistance, enabling dynamic assessment of theoretical bottom hole pressure and axial friction resistance. It allows for full-process monitoring and post-drilling analysis of sliding drilling, providing a basis for improving the bottom hole drill string load condition.

A friction manager may receive time data for hookload, weight-on-bit (WOB), and torque for a wellbore. A friction manager may use the time data for the hookload, the WOB, and the torque, identifying a section of steady-state motion in the wellbore. A friction manager may generate friction forces for the section of steady-state motion based on the time data for the hookload, the WOB, and the torque. A friction manager may adjust drilling activities based on the friction forces.

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.

This invention belongs to the field of drilling equipment technology and discloses a PDC drill bit, including a body and multiple cutter wings. The body has flow holes for drilling fluid. Multiple cutter wings are spaced apart circumferentially on the body, and the cutter wings can slide relative to the body along its axial direction. The drilling fluid can drive the cutter wings to extend along the axial direction of the body. By enabling the cutter wings to move relative to the body along its axial direction, and by allowing the drilling fluid to drive the cutter wings to extend along the axial direction of the body, during drilling operations, the PDC drill bit drills into the formation under the drive of the drill pipe's drilling pressure. When the formation resistance experienced by the cutter wings is less than the driving force of the drilling fluid driving the cutter wings to extend, the cutter wings extend under the drive of the drilling fluid; when the formation resistance experienced by the cutter wings is greater than the driving force of the drilling fluid driving the cutter wings to extend, the cutter wings retract under the action of the formation. This allows each cutter wing of the PDC drill bit to automatically extend or retract according to its respective formation resistance, thereby effectively penetrating the formation.

The invention discloses a method and system for determining a comprehensive anisotropy index, and the method comprises the steps: measuring basic parameters which comprise a well track parameter, a drill string structure parameter and a stratigraphic dip angle parameter; according to the basic parameters, a pre-bending BHA three-dimensional mechanical model is used for calculating the drill bit deviation prevention force of the drilling tool in the drilled stratum; and taking the anti-deflection force of the drill bit under the maximum bit pressure as the deflecting force of the drilled stratum, and inverting the anisotropy index of the stratum based on the deflecting force. According to the method, the drilling characteristics and the pre-bending structure can be comprehensively considered, so that a comprehensive anisotropy index determination scheme is formed.

The invention discloses a triaxial pressure detection device, which relates to the technical field of drilling simulation detection and comprises a mounting platform. The device has the beneficial effects that by integrating the longitudinal pressure assembly, the vertical pressure assembly and the horizontal pressure assembly and by means of the universal pressure assembly on the inner sides, pressure in three mutually perpendicular directions can be independently and accurately applied to a rock sample, the real three-direction stress state of underground rock is simulated, the tunneling unit is integrated in the pressure cavity, and the tunneling efficiency is improved. Under the condition that preset triaxial pressure is maintained, a drill bit can be directly driven to drill a pressed rock, key parameters such as drilling pressure and drilling speed are monitored in real time, the limitation that traditional rock detection equipment can only conduct uniaxial loading is overcome, and longitudinal, vertical and horizontal triaxial synchronous and multi-angle real pressure environment simulation and in-situ drilling testing are achieved.

The invention belongs to the technical field of oil and gas resource drilling engineering, and provides a drill bit while-drilling engineering parameter measuring device, method and equipment and a storage medium. The first measurement and control assembly is mounted on the corner shell; the second measurement and control assembly is mounted on the drilling tool lower main shaft; the power supply unit comprises an energy transmitting antenna and an energy receiving antenna; and the antenna unit comprises a first communication module mounted on the corner shell and a second communication module mounted on the lower main shaft of the drilling tool. The measurement and control method of the device can combine measured bit pressure torque bending moment parameters, compare and analyze time-frequency characteristics of two groups of three-axis acceleration and rotating speed data, evaluate the absorption effect of the screw drill on abnormal vibration such as high-frequency torsion and the like, solve the monitoring and evaluation problem of high-frequency torsion at a drill bit, and improve the working efficiency. The method is of great significance in optimizing drilling parameters and improving the rock breaking efficiency of the drill bit.

The invention discloses a negative pressure suction and powerful embedding anchoring system, which relates to the technical field of underwater navigation objects, and comprises a plurality of suction cups, a suction cup power suction pump and a plurality of powerful anchor nails, a plurality of suckers are embedded in the front end face of the sucker shell and are connected with the sucker power suction pump parent body through a negative pressure suction pipe and a four-way valve; the sucker power suction pump matrix is positioned in the sucker shell; the powerful anchor is embedded in the suction cup in a sliding mode, the powerful anchor comprises an anchoring bullet and a powerful anchor electric trigger, the anchoring bullet is arranged at the front end of the powerful anchor electric trigger, a steel cable is connected to the anchoring bullet, and the other end of the steel cable is fixedly connected with a suction cup shell. The purposes of preliminary stabilization and semi-permanent fixing are achieved, the functions of negative pressure suction and powerful embedded anchoring are achieved, and enough bit pressure is provided for an independently-feeding double-drill-bit torque self-balancing drilling system, so that the double-drill-bit torque self-balancing drilling system rapidly drills to form holes.

The invention relates to a dynamic cooperative control method and system for static sounding equipment, drilling equipment and a ship. The dynamic cooperative control method comprises the steps that the static sounding equipment collects stratum parameters of stratums of all depths in real time, and ship posture monitoring equipment collects the real-time rolling angle of the ship; calculating target drilling parameters according to the formation parameters, wherein the target drilling parameters comprise target drilling pressure and target rotating speed; the drilling equipment collects real-time drilling parameters, wherein the real-time drilling parameters comprise real-time drilling pressure and real-time rotating speed; and the drilling equipment is dynamically adjusted until the difference value of the target drilling parameter and the real-time drilling parameter is within a set error range, and meanwhile, the real-time rolling angle of the ship body is within a set safety threshold value. According to the invention, a multi-source data real-time fusion mechanism is constructed, and dynamic cooperative control is carried out on the stratum parameters obtained by the static sounding equipment, the drilling parameters obtained by the drilling equipment and the rolling angle obtained by the ship attitude monitoring equipment, so that the static sounding equipment, the drilling equipment and the ship are integrated, and the quality and efficiency of geological exploration are remarkably improved.

The invention provides an anchor rod drilling machine self-adaptive drilling control method and device based on constant bit pressure. According to the method, self-adaptive constant drilling is achieved by obtaining operation parameters of an anchor rod drilling machine during drilling; based on a fuzzy PID control method, first self-adaptive feedback parameters of the jumbolter are calculated through the jumbolter operation parameters; on the basis of a feed-forward compensation method, second self-adaptive feedback parameters of the jumbolter are calculated through the jumbolter operation parameters; based on the first self-adaptive feedback parameter and the second self-adaptive feedback parameter, self-adaptive drilling feedback parameters of the jumbolter are determined; according to the self-adaptive drilling feedback parameters, feedback current of a drilling box feeding electromagnetic valve of the jumbolter is adjusted, so that self-adaptive drilling control over the jumbolter is achieved. By means of the method, rock stratum changes can be predicted, the control strategy can be adjusted in a self-adaptive mode, and the drilling straightness and the anchoring force qualification rate are remarkably improved; and meanwhile, overload damage of equipment is effectively avoided by reducing invalid energy consumption.

The present application relates to the field of oil and gas field drilling development technology, and particularly relates to a reentry method of an ultra-short radius horizontal well bore, which uses a slider arranged in a guide tool, and realizes the rotational displacement of the guide tool in the horizontal direction by the principle of lifting the swing joint of the slider after pressing, so that the effect of horizontally entering the lateral drilling hole by the running string without fulcrum in the vertical section is realized, and then the deflection angle of the guide tool and the change of the drilling pressure are measured by a gyroscope inserted into the drill pipe string, and the lateral drilling hole is positioned and inserted. The reentry guide tool of the well hole is designed to solve the problem that there is no support point in the vertical section of the well bore, and the running tool moves downward under the action of gravity and does not enter the lateral drilling hole. Through the design of the reentry guide tool and the reasonable construction method, the running string and the like successfully enter the lateral drilling hole, the horizontal section is fractured, the running string is unblocked, and the like, and the oil production capacity of the well hole is restored and improved.

A friction manager may receive time data for hookload, weight-on-bit (WOB), and torque for a wellbore. A friction manager may use the time data for the hookload, the WOB, and the torque, to identify a section of steady-state motion in the wellbore. A friction manager may generate friction forces for the section of steady-state motion based on the time data for the hookload, the WOB, and the torque. A friction manager may adjust drilling activities based on the friction forces.

The invention discloses a shale formation horizontal well drill string system dynamics simulation experiment device and method, and the device comprises a data collection system, a control system, and a power system, a drill string system, a rock breaking system and a drilling fluid circulation system which are connected in sequence. The data acquisition system is used for acquiring drilling pressure, rotating speed, torque, drilling footage, mechanical drilling speed and vibration acceleration of a well bottom and the ground in a rock breaking experiment in real time; and the control system is used for regulating and controlling the drilling parameters and the drilling fluid circulating pressure in the experiment process on line. The device can simulate the motion state of the drill bit and the drill string horizontally drilling into the shale stratum, accurately measure the vibration characteristics of the coupling system in real time, and provide experimental data support for subsequent research on the dynamics of the shale layer horizontal well drill bit-drill string coupling system.

The application discloses a kind of ultra-deep well drilling methods based on helical gear PDC drill bit, it is related to deep well drilling technical field, comprising the following steps: receiving by multi-source decision model and concurrent generation for the parameter optimization instruction of speed-up, leakage prevention and anti-stuck target;Based on real-time downhole working condition data, calculate dynamic priority for multiple concurrent generated instructions;When conflict is identified, generate the current drilling parameter state snapshot with unique session identification, and the conflicting instruction is sorted according to dynamic priority and generates an ordered execution sequence;Execute the instruction in execution sequence in order, and monitor the working condition index after execution in the preset monitoring period;If the working condition index is monitored to deteriorate more than the safety threshold, then generate reverse adjustment instruction based on state snapshot to roll back, and adjust the priority strategy of subsequent instruction again;The application avoids the dramatic oscillation of drilling pressure, rotating speed and other parameters caused by the mutual offset of parameter adjustment effects of different instructions.

The application discloses a kind of silt clay pile foundation drilling parameter regulation methods and systems, belong to pile foundation drilling construction technical field, method includes: collection and pretreatment silt clay pile foundation drilling well historical construction data, constructs data set;Based on data set construction and training machine learning model, obtain drilling parameter time series prediction model;Real-time acquisition of actual drilling parameter in the process of drilling, and compared with the predicted drilling parameter of model output, determine drilling parameter error;Based on drilling parameter error, the drilling parameter of rig is dynamically adjusted.The application method realizes the intelligent control method of key parameters such as drilling pressure, rotational speed and mud concentration, to improve the efficiency and hole quality of pile foundation construction in complex soft soil layer, reduce construction risk, ensure engineering safety.

The invention discloses a reamer with replaceable cutting teeth, and belongs to the technical field of underground reaming, the reamer comprises a shell, a blade part is arranged on the shell, two ends of the blade part are connected with cutting tooth groups suitable for different stratums, the blade part can swing by taking the blade part as an axis, a driving part is arranged in the shell, and the driving part can axially slide along the shell through drilling pressure. A switching assembly is arranged between the shell and the driving part, the switching assembly can rotate relative to the driving part, and when the driving part slides in the axial direction of the shell, the switching assembly rotates relative to the driving part, so that the two cutting tooth sets of the blade part alternately stretch out, and the cutting modes are switched. When different cutting teeth are switched, complete tripping operation is not needed, and the non-drilling auxiliary operation time is remarkably shortened, so that the comprehensive drilling efficiency is improved; and secondly, the time cost, the equipment loss and the labor cost caused by frequent complete tripping are avoided, and the total drilling cost of a single well is effectively reduced.

The invention relates to the technical field of geological monitoring, in particular to a multi-arm drilling operation real-time geological advanced detection method based on a sensor network. Multi-source time sequence data such as drilling pressure, drilling speed, torque, vibration and drill bit position are collected in real time; dynamic characteristics such as bit pressure change difference, drilling speed fluctuation and torque confusion degree are analyzed, a geological joint performance value is determined, and geological dynamic change is captured in real time; further combining a torque change trend, a vibration frequency domain characteristic (a low-frequency energy ratio) and drill bit position movement data, quantitatively evaluating a geological joint water-containing filling degree, and identifying a communication risk of a current drilling position and a deep water-containing layer; finally, the joint performance value and the geological water content filling degree are fused, comprehensive judgment of the joint filler in the complex geology is achieved, the early warning reliability of hidden high-risk geologic bodies (such as water burst points) is improved, a real-time and accurate geological advanced detection result is provided for construction, and the risk of water burst and the like is effectively reduced.

The application discloses a kind of instruments for downhole measurement of well, it is related to drilling engineering technical field, to solve the technical problems of low efficiency, big data error, difficult to adapt to complex environment of traditional downhole measurement, including: drilling fluid monitoring device, for measuring downhole environmental parameter, to quickly capture abnormal change of drilling fluid parameter when mud performance mutates in soft and hard staggered stratum;Drill bit pressure monitoring device, for measuring downhole pressure of drill bit, to real-time perceive the pressure pulsation characteristics generated when drill bit breaks different lithology stratum;Drilling pressure and torque monitoring device, downhole measuring tool, downhole measurement control device.The application dynamically optimizes the sampling frequency and measurement accuracy of each monitoring device based on real-time acquisition of multi-source data, solves the core technical problem that existing fixed sampling frequency system cannot consider data accuracy and system load, realizes the dynamic balance of multi-parameter accurate monitoring and system efficient operation in soft and hard staggered stratum.

Methods and systems are provided for monitoring operational characteristics of a drilling system that includes a bottom hole assembly having a drill collar operably coupled to a drill bit. A device having an elongate beam and at least one pair of sensors is rigidly secured to a part of the bottom hole assembly to measure strain in the part of the bottom hole assembly. The measurement of strain can be used to derive a measurement of at least one operational parameter of the drilling system, such as dog leg severity of a wellbore, torque on bit, and / or weight on bit.

The application belongs to the technical field of drilling trajectory control, and specifically discloses a drilling trajectory azimuth control method with drilling pressure fluctuation suppression, which comprises the following steps: establishing a nonlinear delay differential equation describing the evolution relationship between the drilling trajectory azimuth and the bottom hole assembly azimuth; separating and modeling the drilling pressure change term in the equation as a drilling pressure uncertainty term to obtain a trajectory azimuth dynamic state equation containing the drilling pressure uncertainty term; based on the state equation, a double-loop control system containing an inner loop and an outer loop is constructed, the inner loop comprises a state observer and an angle estimator, and the outer loop comprises an inner model controller and a state feedback controller; a Lyapunov function is constructed based on the state space equation of the double-loop control system, the system robust stability condition is converted into a linear matrix inequality through stability analysis, and the gain matrix of the state observer and the state feedback controller is solved to obtain the gain matrix of the state observer and the state feedback controller. The application can effectively suppress the influence of drilling pressure fluctuation on drilling trajectory azimuth control.

A method for calibrating a model of a subterranean formation includes capturing one or more measurements at a surface extending to a wellbore in the subterranean formation. The measurements include a surface torque (STOR) on a drill string extending into the wellbore and a surface bit pressure (SWOB) on the drill string. The method further includes determining a coefficient of friction based on the STOR when the drill bit is off-bottom in the wellbore. The drill bit is coupled to a lower end of the drill string. The method also includes determining a downhole torque (DTOR) on the drill bit and a downhole bit pressure (DWOB) on the drill bit when the drill bit is bottomed in the wellbore. The method further includes identifying a rock type in the subterranean formation based at least in part on the coefficient of friction, the DTOR, and the DWOB.

The invention provides a low-bit-pressure efficient rock breaking method and a drill bit, and belongs to the technical field of drill bits. The low-bit-pressure efficient rock breaking drill bit comprises a main body part, a drilling part and a reaming part. The drilling part is arranged at the end part of the main body part, a plurality of cutting wings are arranged on the peripheral surface of the drilling part, the cutting wings are uniformly distributed in a radial shape, the cutting wings are arc-shaped, and a plurality of cutting teeth are uniformly fixed on the cutting wings along the arc direction; the reaming part is arranged on the peripheral surface of the main body part, the reaming part is of a conical spiral structure, the small-diameter end of the reaming part abuts against the drilling part, and a plurality of reaming teeth are evenly fixed to the reaming part in the spiral line direction. In this way, the drilling part is in stable contact with the stratum through the arc-shaped cutting wings, vibration and deflection of the drill bit can be restrained, and drilling stability is enhanced. Meanwhile, by means of the arrangement of the cutting teeth of the conical spiral structure, rotating kinetic energy is converted into axial propelling force, the self-advancing capacity of the drill bit can be enhanced, dependence on external bit pressure is reduced, and the low-bit-pressure drilling effect is achieved.

The invention relates to the technical field of casing detection, in particular to a casing deformation section shape obtaining method and device.The casing deformation section shape obtaining method comprises the following steps that firstly, the casing deformation section shape obtaining device is put into a well; and 2, the casing deformation section shape obtaining device is tripped into the deformation position of the underground casing, and tripping is stopped after resistance is encountered. The device is reasonable and compact in structure and convenient to operate, the device for obtaining the shape of the deformation section of the casing pipe is lowered to the deformation position of the casing pipe, printing is conducted at certain drilling pressure after resistance is met, under the drilling pressure effect, the inner pipe and the outer pipe expand and extrude the inner wall of the deformed casing pipe, and therefore three-dimensional marks are formed; the casing deformation section shape obtaining device is pulled out of a well mouth, and the size of the casing deformation section shape obtaining device is observed and measured, so that the shape and the size of the casing deformation section are obtained, the deformation condition of the whole casing deformation section can be displayed in a three-dimensional mode, and a more complete and more real basis is provided for casing shaping work.