CN102536192B - Dynamic control system and control method for downhole directional power drilling tool face - Google Patents
Dynamic control system and control method for downhole directional power drilling tool face Download PDFInfo
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- CN102536192B CN102536192B CN201210068764.5A CN201210068764A CN102536192B CN 102536192 B CN102536192 B CN 102536192B CN 201210068764 A CN201210068764 A CN 201210068764A CN 102536192 B CN102536192 B CN 102536192B
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Abstract
The invention relates to a dynamic control system and a control method for a downhole directional power drilling tool face. The dynamic control system is characterized in that the dynamic control system comprises a set of tool face decoding system, a set of dynamic tool face control system, a set of top drive/turntable servo and brake system, a set of top drive/turntable angle sensing system and a set of top drive/turntable angle signal processing system; and the input end of the tool face decoding system is connected with the pressure signal sensor of a measurement while drilling (MWD) system in a well drilling system, the output end of the tool face decoding system is connected with the dynamic tool face control system, the dynamic tool face control system is preset in a monitoring computer, the output end of the dynamic tool face control system is connected with the top drive/turntable servo and brake system, the top drive/turntable servo and brake system is connected with a top drive/turntable and the top drive/turntable angle sensing system, the output end of the top drive/turntable angle sensing system is connected with the top drive/turntable angle signal processing system, and the output end of the top drive/turntable angle signal processing system is connected with the dynamic tool face control system. The dynamic control system and the control method can be widely used for the dynamic adjustment control of the downhole directional power drilling tool face.
Description
Technical field
The present invention relates to the control system and control method thereof that during oilfield drilling, tool-face are controlled, particularly about a kind of downhole orientation power drilling tool tool-face kinetic-control system and control method thereof.
Background technology
In conventional drilling operation process, straight well section and steady tilted section adopt top to drive or carousel mode rotary drilling usually, steerable drilling section is according to down-hole bent angle formula deflecting power drilling tool, then usually use slide drilling mode, under the conditions such as pumpage adjustment, formation lithology change, power drilling tool wearing and tearing, the drift of easy generation drilling tool face, the problem such as cause hole trajectory control unsuccessfully.In the face of this situation, common way is after downhole tool face drift, adopt stop boring, on carry drilling tool method reset tool-face, and this will affect operation timeliness.Meanwhile, in conventional steering drilling tool slipping drilling process, because drilling tool can not rotate, cause apply the pressure of the drill delayed, hole cleaning is difficult, easily causes the problems such as operating efficiency is low, complex procedures.Therefore, a kind of dynamic control method that can realize downhole orientation power drilling tool tool-face is badly in need of.
Summary of the invention
For the problems referred to above, the object of this invention is to provide one and can increase substantially directional well drilling operating efficiency, reduce down hole problem, improve downhole orientation power drilling tool tool-face kinetic-control system and the control method thereof of oilfield prospecting developing economic benefit.
For achieving the above object, the present invention takes following technical scheme: a kind of downhole orientation power drilling tool tool-face kinetic-control system, is characterized in that: and it comprises kit face decode system, a set of dynamic tool face control system, a set of top are driven/rotating disk servo and brakes, a set of top drive/and rotating disk angle sensing system and a set of top drive/rotating disk angle signal processing system, the input of described tool-face decode system connects the mwd system pressure signal sensor in well system, output connects described dynamic tool face control system, described dynamic tool face control system is preset in supervisory control comuter, the output of described dynamic tool face control system connects described top and drives/rotating disk servo and brakes, described top drives/and rotating disk servo is connected top with brakes drives/and rotating disk and described top drive/rotating disk angle sensing system, described top drives/and the output of rotating disk angle sensing system connects described top and drives/rotating disk angle signal processing system, described top drives/and the output of rotating disk angle signal processing system connects described dynamic tool face control system, wherein, MWD represents measurement while drilling.
Drilling dynamics system is the setting under situation is driven on top: drill bit connecting bending angie type deflecting power drilling tool, described bent angle formula deflecting power drilling tool connects measurement-while-drilling system, described measurement-while-drilling system jointed rod, described drilling rod upper end is through rig floor, connection top, described drilling rod top is driven, described top is driven and is arranged top and drive angular transducer, and connection standpipe is driven on described top, described standpipe is arranged mwd system pressure signal sensor; Described mwd system pressure signal sensor fastening means face decode system, described top is driven connection top and is driven servo and brakes, described top is driven angular transducer and is connected top and drive angle signal treatment system, and described tool-face decode system, top drive servo and drive angle signal treatment system with brakes, top and be all connected described dynamic tool face control system.
Drilling dynamics system is the setting in rotating disk situation: drill bit connecting bending angie type deflecting power drilling tool, described bent angle formula deflecting power drilling tool connects measurement-while-drilling system, described measurement-while-drilling system jointed rod, described drilling rod upper end connection side's drilling rod, described kelly bar is through the rotating disk be arranged on rig floor, described rotating disk is provided with rotating disk angular transducer, described kelly bar upper end connecting tap, described tap upper end connects standpipe, described standpipe is installed mwd system pressure signal sensor, described mwd system pressure signal sensor fastening means face decode system, described rotating disk connects rotating disk servo and brakes, described rotating disk angular transducer connects rotating disk angle signal processing system, described tool-face decode system, rotating disk servo and brakes, rotating disk angle signal processing system all connects described dynamic tool face control system.
The control method of above-mentioned a kind of downhole orientation power drilling tool tool-face kinetic-control system, it comprises the following steps: MWD signal under the mwd system pressure signal sensor production wells 1) in well system, and send the down-hole MWD signal collected to tool-face decode system, tool-face decode system is according to the down-hole MWD signal received, solve downhole tool surface information, and downhole tool surface information is passed to dynamic tool face control system; 2) the downhole tool surface information received is decoded by dynamic tool face control system, and carry out Logic judgment, judge whether to exceed the threshold value set in the control system of dynamic tool face: if do not exceed setting threshold value, then do not take regulating measures, continue to creep into; If exceed setting threshold value, then start top to drive/rotating disk servo and brakes in servo-drive system; 3) top drive/rotating disk servo and brakes in servo-drive system adjustment top drive the/angle of rotating disk, now, top drives/and top drives by rotating disk angle sensing system/and the angle value of rotating disk feeds back to top and drives/rotating disk angle signal processing system, top drives/and feedback signal carried out signal transacting, passes to dynamic tool face control system by rotating disk angle signal processing system; 4) dynamic tool face control system judge to push up drive/whether the current angle value of rotating disk reach the angle value of setting, if do not reach the angle value of setting, then return step 3), top drives/rotating disk servo and brakes in servo-drive system continue adjustment top and drive/the angle of rotating disk; If reach the angle value of setting, then start top to drive/rotating disk servo and brakes in brakes; 5) top drive/rotating disk servo and brakes in brake system top drive/rotating disk, realize brake, locking tool face also continues to creep into; 6) step 1 is returned), tool-face decode system continuous reception down-hole MWD signal, real-time tracking downhole tool face situation, carries out dynamic conditioning control to downhole tool face.
The control method of described a kind of downhole orientation power drilling tool tool-face kinetic-control system, its be applicable to creep into dynamical system be top drive/rotating disk time: setting initial tool face, Dynamic controlling tool-face and the pressure of the drill hysteresis effect eliminated during slipping drilling, three kinds of duties.
The present invention is owing to taking above technical scheme, and it has the following advantages: 1, the present invention is provided with tool-face decode system ,/rotating disk angle sensing system is driven on top, top is driven/rotating disk servo and brakes, dynamic tool face control system, tool-face decode system is according to the down-hole MWD received (Measure While Drilling, measurement-while-drilling system) signal, solve downhole tool surface information, and information is passed to dynamic tool face control system, dynamic tool face control system is by decoding and Logic judgment, start top and drive/rotating disk servo-drive system, adjustment top drives/and the angle of rotating disk is to setting value, / rotating disk brakes realization brake is driven by top, locking tool face also continues to creep into, therefore, the dynamic conditioning of tool-face during the present invention can realize downhole orientation power drilling tool slip deflecting, the downhole tool face drifting problem because a variety of causes causes can be solved, control accuracy and the operating efficiency of directional well well track can be improved.2, the present invention is during mud motor slide drilling, due to can the automatic adjustment in implementation tool face, so allow suitably to rotate top drilling tool, mud motor tool-face automatically can return to setting value under the adjustment of dynamic tool face control system, and therefore, during the present invention can reduce drilling well, drilling tool glues card risk, realize effective transmission of the pressure of the drill, improve hole cleaning problem, reduce drilling complexity accident, improve directed drilling operating efficiency.The present invention can increase substantially directional well drilling operating efficiency, reduce down hole problem, reduce oilfield prospecting developing drillng operation cost, improve the economic benefit of oilfield prospecting developing, therefore, can be widely used in downhole orientation power drilling tool tool-face dynamic conditioning control procedure.
Accompanying drawing explanation
Fig. 1 is control system control flow schematic diagram of the present invention
Fig. 2 be the present invention creep into dynamical system be top drive time schematic diagram is set
Fig. 3 is that the present invention arranges schematic diagram when creeping into dynamical system and being rotating disk
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in detail.
As shown in Figure 1, control system of the present invention is applicable to drilling dynamics system is that to drive with drilling dynamics system be the situation of rotating disk on top.Control system of the present invention comprises kit face decode system 1, a set of dynamic tool face control system 2, a set of top are driven/and rotating disk servo and brakes 3, a set of top drive/and/rotating disk angle signal processing system 5 is driven on rotating disk angle sensing system 4 and a set of top.The input of tool-face decode system 1 connects MWD (the Measure While Drilling in well system, measurement while drilling) system pressure signal sensor, output connects dynamic tool face control system 2, dynamic tool face control system 2 is preset in supervisory control comuter, the output of dynamic tool face control system 2 connects top and drives/rotating disk servo and brakes 3, top drives/and rotating disk servo is connected top with brakes 3 drives/and rotating disk and top drive/rotating disk angle sensing system 4, top drives/and the output of rotating disk angle sensing system 4 connects top and drives/rotating disk angle signal processing system 5, top drives/and the output of rotating disk angle signal processing system 5 connects dynamic tool face control system 2.
As shown in Figure 1, the control method of control system of the present invention comprises the following steps:
1) MWD signal under the mwd system pressure signal sensor production wells in well system, and send the down-hole MWD signal collected to tool-face decode system 1, tool-face decode system 1 is according to the down-hole MWD signal received, solve downhole tool surface information, and downhole tool surface information is passed to dynamic tool face control system 2;
2) the downhole tool surface information received is decoded by dynamic tool face control system 2, and carry out Logic judgment, judge whether to exceed the threshold value of setting in dynamic tool face control system 2: if do not exceed setting threshold value, then do not take regulating measures, continue to creep into; If exceed setting threshold value, then start top to drive/rotating disk servo and brakes 3 in servo-drive system;
3) top drive/rotating disk servo and brakes 3 in servo-drive system adjustment top drive the/angle of rotating disk, now, top drives/and top drives by rotating disk angle sensing system 4/and the angle value of rotating disk feeds back to top and drives/rotating disk angle signal processing system 5, top drives/and feedback signal carried out signal transacting, passes to dynamic tool face control system 2 by rotating disk angle signal processing system 5;
4) dynamic tool face control system 2 judge to push up drive/whether the current angle value of rotating disk reach the angle value of setting, if do not reach the angle value of setting, then return step 3), top drives/rotating disk servo and brakes 3 in servo-drive system continue adjustment top and drive/the angle of rotating disk; If reach the angle value of setting, then start top to drive/rotating disk servo and brakes 3 in brakes;
5) top drive/rotating disk servo and brakes 3 in brake system top drive/rotating disk, realize brake, locking tool face also continues to creep into;
6) step 1 is returned), tool-face decode system 1 continuous reception down-hole MWD signal, real-time tracking downhole tool face situation; If when tool-face floats to more than the threshold value of dynamic tool face control system 5 setting, again will start inventive article face dynamic conditioning control system, the tool-face of carrying out a new round adjusts operation automatically.
As shown in Figure 2, control system of the present invention is the setting under situation is driven on top in drilling dynamics system: drill bit 6 connecting bending angie type deflecting power drilling tool 7, bent angle formula deflecting power drilling tool 7 connects measurement-while-drilling system 8, measurement-while-drilling system 8 jointed rod 9, drilling rod 9 upper end is through rig floor 10, and connection top, drilling rod 9 top drives 11, and top is driven and arranged top on 11 and drive angular transducer 12,11 connection standpipes 13 are driven on top, standpipe 13 are arranged mwd system pressure signal sensor 14.Mwd system pressure signal sensor 14 fastening means face decode system 1, top is driven 11 connection tops and is driven servo and brakes 3, top is driven angular transducer 12 and is connected top and drive angle signal treatment system 5, and tool-face decode system 1, top drive servo and drive angle signal treatment system 5 with brakes 3 and top and be all connected dynamic tool face control system 2.
As shown in Figure 3, the setting of control system of the present invention under drilling dynamics system is rotating disk situation: drill bit 6 connecting bending angie type deflecting power drilling tool 7, bent angle formula deflecting power drilling tool 7 connects measurement-while-drilling system 8, measurement-while-drilling system 8 jointed rod 9, drilling rod 9 upper end connection side's drilling rod 15, kelly bar 15 is through the rotating disk 16 be arranged on rig floor 10, and kelly bar 15 is for the power transmission between rotating disk 16 and drilling rod 9.Rotating disk 16 is provided with rotating disk angular transducer 17, kelly bar 15 upper end connecting tap 18, tap 18 upper end connects standpipe 13, standpipe 13 is installed mwd system pressure signal sensor 14.Mwd system pressure signal sensor 14 fastening means face decode system 1, rotating disk 16 connects rotating disk servo and brakes 3, rotating disk angular transducer 17 connects rotating disk angle signal processing system 5, and tool-face decode system 1, rotating disk servo are all connected dynamic tool face control system 2 with brakes 3 with rotating disk angle signal processing system 5.
In above-described embodiment, top drive/rotating disk angle sensing system 4 can drive angular transducer 12 for top, also can be disc angle degree sensor 17.
The control method of control system of the present invention can be applicable to following three kinds of duties.
1) initial tool face is set: conventional mud motor is before slip deflecting starts, and by by drill bit lift-off shaft bottom, the well pump that spuds in circulates, measure the untwist angle of mud motor under this discharge capacity, according to untwist angle, set and lock top and drive/rotating disk, then start slipping drilling operation.The present invention can utilize above-mentioned conventional method to set initial tool face, also can realize not measuring untwist angle, directly start to creep into operation, according to the real-time MWD signal in down-hole after spudding in, by top drive/rotating disk servo and brakes setting top drive/rotating disk original locked position (angle).
As shown in Figure 2, creeping into dynamical system is that top is when driving, the control method of control system of the present invention is: after pumpage is stable, tool-face decode system 1 receives the down-hole MWD signal of measurement-while-drilling system 8 by mwd system pressure signal sensor 14, analysis draws real-time tool surface information and sends it to dynamic tool face control system 2, dynamic tool face control system 2 requires to determine latched position/angle after calculating top drives the angle of 11 needs rotations according to hole trajectory control, servo and brakes 3 starting-up response are driven in top, untie brakes and start top and drive 11 rotations, top is driven angular transducer 12 and is monitored the angle that rotates and it is driven angle signal treatment system 5 by top feed back to dynamic tool face control system 2, drive the latched position/angle of 11 arrival settings on top after, servo is driven and brakes 3 is braked by top, top is driven 11 and is locked in the position/angles preset, downhole orientation power drilling tool is and guided to start directed drilling operation.
As shown in Figure 3, when to creep into dynamical system be rotating disk, the control method of control system of the present invention is: after pumpage is stable, tool-face decode system 1 receives the down-hole MWD signal from measurement-while-drilling system 8 by mwd system pressure signal sensor 14, analysis draws real-time tool surface information and sends it to dynamic tool face control system 2, dynamic tool face control system 2 requires to determine latched position/angle after calculating rotating disk 16 needs the angle rotated according to hole trajectory control, rotating disk servo and brakes 3 starting-up response, untie brakes and start rotating disk 16 and rotate, rotating disk angular transducer 17 is monitored the angle of rotation and it is fed back to dynamic tool face control system 2 by rotating disk angle signal processing system 5, arrive the latched position/angle of setting at rotating disk 16 after, braked by rotating disk servo and brakes 3, rotating disk 16 is locked in the position/angles preset, downhole orientation power drilling tool is and guided to start directed drilling operation.
2) Dynamic controlling tool-face: conventional mud motor is during slip deflecting, as the drift of generating tool face, usually pass through drill bit lift-off shaft bottom, the well pump that spuds in circulates, redeterminate the untwist angle of mud motor under this discharge capacity, according to untwist angle, reset and lock top and drive/rotating disk, then recover slipping drilling operation.When the present invention can be implemented in downhole tool face drift, without the need on carry drilling tool measure untwist angle, can according to the real-time MWD signal in down-hole, driven/rotating disk servo and brakes by top, reset top to drive/Rolling disc lock allocation (angle), reach the object of dynamic conditioning mud motor tool-face.
As shown in Figure 2, creeping into dynamical system is that top is when driving, the control method of control system of the present invention is: downhole orientation power drilling tool is in directional drilling process, tool-face decode system 1 is by the down-hole MWD signal of mwd system pressure signal sensor 14 real-time reception from measurement-while-drilling system 8, analysis draws real-time tool surface information and sends it to dynamic tool face control system 2, and dynamic tool face control system 2 requires to calculate the position/angles that top drives 11 according to hole trajectory control; If result of calculation does not exceed the threshold value that dynamic tool face control system 2 sets, then do not adjust the position/angles that top drives 11, if exceed the threshold value that dynamic tool face control system 2 sets, then start top and drive servo and brakes 3, after the position/angles of 11 arrival settings is driven on adjustment top, drive servo by top and brakes 3 is braked, the position/angles that 11 are locked in setting is driven on top, and guides downhole orientation power drilling tool to proceed to creep into operation.Creep into operation in tool-face adjustment process to proceed, unaffected.
As shown in Figure 3, when to creep into dynamical system be rotating disk, the control method of control system of the present invention is: downhole orientation power drilling tool is in directional drilling process, tool-face decode system 1 is by the down-hole MWD signal of mwd system pressure signal sensor 14 real-time reception from measurement-while-drilling system 8, analysis draws real-time tool surface information and sends it to dynamic tool face control system 2, and dynamic tool face control system 2 requires according to hole trajectory control the position/angles calculating rotating disk 16; If result of calculation does not exceed the threshold value that dynamic tool face control system 2 sets, the then position/angles of uncomfortable turn over dish 16, if exceed the threshold value that dynamic tool face control system 2 sets, then start rotating disk servo and brakes 3, after adjustment rotating disk 16 arrives the position/angles of setting, braked by rotating disk servo and brakes 3, rotating disk 11 is locked in the position/angles of setting, and guide downhole orientation power drilling tool to proceed to creep into operation.Creep into operation in tool-face adjustment process to proceed, unaffected.
3) the pressure of the drill hysteresis effect during slipping drilling is eliminated: conventional mud motor, during slip deflecting, being stablized to maintain tool-face, cannot be realized top drilling tool and rotating.Affect by the factor such as wall friction, cutting bed, especially under well track complicated situation, be difficult in drilling process apply available weight to drill bit, cause drilling efficiency low, rate of penetration is slow.
As shown in Figure 2, creeping into dynamical system is that top is when driving, the control method of control system of the present invention is: when judging that the pressure of the drill lag situation occurs in down-hole, servo and brakes 3 are driven in automatic startup top, and drive servo by dynamic tool face control system 2 to top and brakes 3 sends instruction, the order of severity delayed according to the pressure of the drill provides rotating speed and the number of turns that 11 rotations are driven on top, by rotary tools, discharges the frictional resistance between drilling tool and the borehole wall when not affecting well track.When reaching predetermined rotating cycle, start duty 2) Dynamic controlling tool-face flow process, adjustment tool-face, to setting value, proceeds slipping drilling.
As shown in Figure 3, when to creep into dynamical system be rotating disk, the control method of control system of the present invention is: when judging that the pressure of the drill lag situation occurs in down-hole, automatic startup rotating disk servo and brakes 3, and send instruction by dynamic tool face control system 2 to rotating disk servo and brakes 3, the order of severity delayed according to the pressure of the drill provides rotating speed and the number of turns of rotating disk 16 rotation, by rotary tools, discharges the frictional resistance between drilling tool and the borehole wall when not affecting well track.When reaching predetermined rotating cycle, start duty 2) Dynamic controlling tool-face flow process, adjustment tool-face, to setting value, proceeds slipping drilling.
Above-mentioned each example is only for illustration of the present invention, and wherein the composition of each system and fit system all can change to some extent, and every equivalents of carrying out on the basis of technical solution of the present invention and improvement, all should not get rid of outside protection scope of the present invention.
Claims (4)
1. a downhole orientation power drilling tool tool-face kinetic-control system, it comprises drill bit, bent angle formula deflecting power drilling tool, measurement-while-drilling system, drilling rod, rig floor, top is driven and servo and brakes are driven in standpipe top, described drill bit connects described bent angle formula deflecting power drilling tool, described bent angle formula deflecting power drilling tool connects described measurement-while-drilling system, described measurement-while-drilling system connects described drilling rod, described drilling rod upper end is through described rig floor, described drilling rod top connects described top and drives, described top is driven and is connected described standpipe, described standpipe is provided with the pressure signal sensor of described measurement-while-drilling system, it is characterized in that: it also comprises kit face decode system, a set of dynamic tool face control system, angle sensing system is driven on a set of top, angle signal treatment system is driven on a set of top and servo and brakes are driven in a set of top, the input of described tool-face decode system connects the pressure signal sensor of described measurement-while-drilling system, output connects described dynamic tool face control system, described dynamic tool face control system is preset in supervisory control comuter, the output of described dynamic tool face control system connects described top and drives servo and brakes, described top is driven servo and is connected top with brakes and drives and drive angle sensing system with described top, the output that angle sensing system is driven on described top connects described top and drives angle signal treatment system, the output that angle signal treatment system is driven on described top connects described dynamic tool face control system.
2. a downhole orientation power drilling tool tool-face kinetic-control system, it comprises drill bit, bent angle formula deflecting power drilling tool, measurement-while-drilling system, drilling rod, kelly bar, rig floor, rotating disk, tap and standpipe, described drill bit connects described bent angle formula deflecting power drilling tool, described bent angle formula deflecting power drilling tool connects described measurement-while-drilling system, described measurement-while-drilling system connects described drilling rod, described drilling rod upper end connects described kelly bar, described kelly bar is through the described rotating disk be arranged on described rig floor, described rotating disk is provided with rotating disk angular transducer, described kelly bar upper end connects described tap, described tap upper end connects described standpipe, described standpipe is installed the pressure signal sensor of described measurement-while-drilling system, it is characterized in that: it also comprises kit face decode system, a set of dynamic tool face control system, a set of rotating disk angle sensing system, servo and brakes are driven in a set of rotating disk angle signal processing system and a set of top, the input of described tool-face decode system connects the pressure signal sensor of described measurement-while-drilling system, output connects described dynamic tool face control system, described dynamic tool face control system is preset in supervisory control comuter, the output of described dynamic tool face control system connects described rotating disk servo and brakes, described rotating disk servo is connected rotating disk and described rotating disk angle sensing system with brakes, the output of described rotating disk angle sensing system connects described rotating disk angle signal processing system, the output of described rotating disk angle signal processing system connects described dynamic tool face control system.
3. a control method for downhole orientation power drilling tool tool-face kinetic-control system as claimed in claim 1 or 2, it comprises the following steps:
1) MWD signal under the mwd system pressure signal sensor production wells in well system, and send the down-hole MWD signal collected to tool-face decode system, tool-face decode system is according to the down-hole MWD signal received, solve downhole tool surface information, and downhole tool surface information is passed to dynamic tool face control system;
2) the downhole tool surface information received is decoded by dynamic tool face control system, and carry out Logic judgment, judge whether to exceed the threshold value set in the control system of dynamic tool face: if do not exceed setting threshold value, then do not take regulating measures, continue to creep into; If exceed setting threshold value, then start top to drive/rotating disk servo and brakes in servo-drive system;
3) top drive/rotating disk servo and brakes in servo-drive system adjustment top drive the/angle of rotating disk, now, top drives/and top drives by rotating disk angle sensing system/and the angle value of rotating disk feeds back to top and drives/rotating disk angle signal processing system, top drives/and feedback signal carried out signal transacting, passes to dynamic tool face control system by rotating disk angle signal processing system;
4) dynamic tool face control system judge to push up drive/whether the current angle value of rotating disk reach the angle value of setting, if do not reach the angle value of setting, then return step 3), top drives/rotating disk servo and brakes in servo-drive system continue adjustment top and drive/the angle of rotating disk; If reach the angle value of setting, then start top to drive/rotating disk servo and brakes in brakes;
5) top drive/rotating disk servo and brakes in brake system top drive/rotating disk, realize brake, locking tool face also continues to creep into;
6) step 1 is returned), tool-face decode system continuous reception down-hole MWD signal, real-time tracking downhole tool face situation, carries out dynamic conditioning control to downhole tool face.
4. the control method of a kind of downhole orientation power drilling tool tool-face kinetic-control system as claimed in claim 3, its be applicable to creep into dynamical system be top drive/rotating disk time: setting initial tool face, Dynamic controlling tool-face and the pressure of the drill hysteresis effect eliminated during slipping drilling, three kinds of duties.
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