75 results about "Weight on bit" patented technology

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 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 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 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 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 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.

This disclosure relates to an adjustable frequency pulsed particle jet rock-breaking device and its control method. The device includes an upper connector, a frequency-adjustable thruster, a housing, an upper flow channel, a cavity liner, a lower flow channel, a lower connector, a PID drill bit, and frequency-increasing nozzles. An acceleration chamber is formed between the upper connector and the upper flow channel; a pulse modulation chamber is formed between the upper flow channel, the cavity liner, and the lower flow channel; a rectifier chamber is provided inside the lower flow channel; a flow stabilizing chamber is provided between the lower connector and the PID drill bit; the device is equipped with four frequency-increasing nozzles. The particle jet, composed of particles and drilling fluid, is accelerated through the acceleration chamber and then enters the pulse modulation chamber, causing the particle jet to produce a pulse effect. The solution provided in this disclosure can generate high-frequency, high-speed pulsed particle jets, and the pulse frequency can be adjusted to improve rock-breaking efficiency, increase drilling speed at lower drilling pressure and torque, and purify the bottom hole flow field, reducing repeated wear of particles, cuttings, and the drill bit.

The invention discloses a linear slip ring type bit pressure adjusting mechanism for a bionic self-balancing drilling tool, and relates to the technical field of drilling tests, the linear slip ring type bit pressure adjusting mechanism comprises a transition joint, a connecting joint, a torque motor stator, an upper torque-isolating pressure-transmitting joint and a lower torque-isolating pressure-transmitting joint which are coaxially and fixedly connected, and a displacement monitoring assembly A is arranged in the transition joint; the mud guide pipe, the pressure regulating motor transmission shaft, the pressure regulating and transmitting lead screw and the torque-isolating and pressure-transmitting upper shaft are coaxially and fixedly connected, the pressure regulating motor transmission shaft can rotate along with a torque motor rotor and can axially move along the torque motor rotor, the pressure regulating and transmitting lead screw is in threaded connection with the inner wall of the torque-isolating and pressure-transmitting upper connector, and the torque-isolating and pressure-transmitting assembly D is arranged on the outer side of the torque-isolating and pressure-transmitting lower shaft. The upper end of the torsion-isolating pressure-transmitting lower shaft penetrates through the torsion-isolating pressure-transmitting upper shaft and then extends into the pressure-regulating pressure-transmitting lead screw, and the copper sliding assembly C is arranged between the torsion-isolating pressure-transmitting assembly D and the torsion-isolating pressure-transmitting lower connector and used for transmitting signals of a pressure sensor in the torsion-isolating pressure-transmitting assembly D.

This invention relates to the field of ore crushers and provides an adaptive high-speed ore crusher, including a crushing box with a feed chute, and a support fixedly connected to the crushing box. The support is fixedly equipped with a thrust mechanism, which is slidably connected within the crushing box and capable of vertical movement. An air guide assembly is provided between the thrust mechanism and the end face of the crushing box, allowing air from outside the crushing box to be introduced into the crushing box during vertical movement. A drilling and pressing mechanism is fixedly connected to the thrust mechanism, capable of elastic extension and retraction, and capable of drilling and pressing crushing the ore. A pushing mechanism is rotatably connected to the drilling and pressing mechanism; when the drilling and pressing mechanism moves vertically, under the thrust of the drilling and pressing mechanism, the pushing mechanism reciprocates relative to the drilling and pressing mechanism, thereby crushing and flattening the stones.

The application discloses a non-homogeneous structure impregnated diamond drill bit and a preparation method thereof. The non-homogeneous structure impregnated diamond drill bit comprises a non-homogeneous structure working layer, the non-homogeneous structure working layer is in a ring structure, a plurality of water gap areas are distributed in the circumferential direction of the whole ring structure, the non-homogeneous structure working layer is uniformly divided into a plurality of fan-shaped sections, and any one fan-shaped section comprises a boundary area and a middle area. The volume fraction of diamonds in the boundary area is greater than that in the middle area, and the any one fan-shaped section further comprises a plurality of blocks with different components or different particle sizes. The drill bit provided by the application is provided with diamond concentration to form multi-dimensional non-uniform changes. The differentiated wear can make the originally flat drill bit bottom lip surface naturally form a wavy or toothed profile. The area of the convex hard layer is small, and under the same drilling pressure, a very high local specific pressure can be obtained, so that the diamond can be more easily eaten into hard rock, and the mechanical drilling speed is greatly improved.

The present application relates to a kind of drill tools that can measure hole bottom drilling parameter, including drill bit and drill pipe, the both ends of drill pipe are connected drill bit and drilling machine respectively, further include: sleeve, sleeve is located in drill bit, and annular accommodating cavity is formed between the inner peripheral wall of sleeve and drill bit.Measuring assembly is located in accommodating cavity, measuring assembly includes weight-on-bit measuring bridge, torque measuring bridge and signal transmission unit.Weight-on-bit measuring bridge can collect the weight-on-bit of drill bit and transmit weight-on-bit information to signal transmission unit, torque measuring bridge can collect the torque of drill bit and transmit torque information to signal transmission unit, signal transmission unit can transmit weight-on-bit information and torque information to drilling machine.Its beneficial effect is that, in the drilling process of drill bit, drilling machine can adjust the weight-on-bit and torque applied to drill bit through drill pipe in real time according to demand, improve the adjustment accuracy of weight-on-bit and torque on drill bit, avoid the breakage of drill pipe and other hole accidents.

The invention discloses an ultra-deep well drilling method based on a spiral tooth distribution PDC drill bit, and relates to the technical field of deep well drilling, and the method comprises the following steps: receiving a parameter optimization instruction which is generated by a multi-source decision model and aims at acceleration, leakage prevention and jamming prevention targets; calculating a dynamic priority for a plurality of concurrent instructions based on the real-time downhole condition data; when a conflict is identified, generating a current drilling parameter state snapshot with a unique session identifier, sorting conflicting instructions according to dynamic priorities, and generating an ordered execution sequence; sequentially executing the instructions in the execution sequence, and monitoring the executed working condition indexes in a preset monitoring period; if it is monitored that deterioration of the working condition index exceeds a safety threshold value, a reverse adjustment instruction is generated based on the state snapshot for rollback, and a priority strategy of a subsequent instruction is readjusted; according to the invention, violent oscillation of parameters such as bit pressure and rotating speed caused by mutual offset of parameter adjustment effects of different instructions is avoided.

The invention discloses an underground coring system which can provide bit pressure in a hydraulic mode, does not need additional balance weight and can ensure accurate adjustment of the bit pressure. The underground coring device comprises an underground coring device body and an operation carrier, the underground coring device body comprises a hydraulic feeding assembly and a rotary sampling assembly, the hydraulic feeding assembly comprises a power assembly and a hydraulic oil cylinder assembly, the hydraulic oil cylinder assembly comprises a first cavity and a second cavity, and the power assembly is connected with the first cavity through a first oil way; the power assembly is connected with the second cavity through a second oil way. When the power assembly extracts oil from the first cavity and conveys the oil to the second cavity, the hydraulic oil cylinder assembly drives the rotary sampling assembly to drill into hard rock; when the power assembly extracts oil from the second cavity and conveys the oil to the first cavity, the hydraulic oil cylinder assembly drives the rotary sampling assembly to be separated from the hard rock; the operation carrier is provided with winding and unwinding equipment and a cable connected with the hydraulic feeding assembly, and the winding and unwinding equipment can drive the underground coring device to dive or float upwards by unwinding or winding the cable.

The application relates to a dynamic cooperative control method and system of a static sounding device, a drilling device and a ship, which comprises the following steps: the static sounding device collects stratum parameters of strata at different depths in real time; a ship body posture monitoring device collects a real-time roll angle of the ship body; target drilling parameters are calculated according to the stratum parameters, the target drilling parameters comprising target drilling pressure and target rotating speed; the drilling device collects real-time drilling parameters, the real-time drilling parameters comprising real-time drilling pressure and real-time rotating speed; the drilling device is dynamically adjusted until the difference between the target drilling parameters and the real-time drilling parameters is within a set error range, and the real-time roll angle of the ship body is within a set safety threshold. The application constructs a multi-source data real-time fusion mechanism, dynamically cooperatively controls the stratum parameters obtained by the static sounding device, the drilling parameters obtained by the drilling device and the roll angle obtained by the ship body posture monitoring device, and integrates the static sounding device, the drilling device and the ship, so that the quality and efficiency of geological exploration are significantly improved.

The invention discloses a dual-drive type self-balancing rotary self-pressurization drilling system and a reverse circulation process. Comprising a double-drill-bit rock breaking subsystem for the self-balancing drilling system, a resistance increasing feeding subsystem for the self-balancing drilling system, a bit pressure adjusting subsystem for the self-balancing drilling system, a back reaming subsystem for the self-balancing drilling system, a multi-channel electric conduction direct insertion type connector for the self-balancing drilling system and a reverse circulation continuous pipe system for the self-balancing drilling system. The invention aims to effectively reduce the disturbance of the drill bit to the stratum while efficiently completing the drilling work, stabilize the hole wall and complete the efficient and high-quality coring work, and can autonomously pressurize and feed.