CN102493766A - Borehole track control method and borehole track control system - Google Patents

Abstract

The invention relates to a borehole track control method and a borehole track control system. The borehole track control system method comprises the following steps: step 1 preparing for guide tool drilling down: namely performing drill tool preparing work according to design of a guide drill tool combination and a drill column structure, measuring into-well drill tools on site, giving numbers to the drill tools and recording the parameters of the drill tools according to into-well sequence; step 2 arranging guide initial work parameters, testing a guide well drilling system to inspect if the system works normally, enabling the drilling tool combination to drill downwards after the guide system is tested to be normal; step 3 after the drill tools drill down to the bottom of a well, performing rotation guide well drilling work according to the initial work parameters set in the step 2, and monitoring a borehole track while performing the work, and adjusting track design in real time according to monitored data; and step 4 finishing guide well drilling operation and tripping out a guide tool. The borehole track control method and the borehole track control system have the advantages of reducing downward transmitting information amount, improving system reliability, well meeting the requirements for underground intelligent guide control and improving work efficiency of a rotation guide well drilling system.

Description

A kind of borehole track control method and system thereof

Technical field

The present invention relates to a kind of method for controlling scrolling and system thereof, especially relate to a kind of borehole track control method and system thereof.

Background technology

The rotary steerable drilling technology is the drilling technology Development Trend, has represented the advanced level of current directed-drilling technique.Rotary steerable drilling is under the situation that drill string rotates continuously, to carry out borehole track control, and have following technical advantage: well is smooth, and the drill string frictional resistance is little, can improve wellbore quality and extend ability with the increase displacement; The well cleaning reduces down hole problem; One cover drilling tool is realized multiple borehole track control function, improves drillng operation efficient.Therefore, the rotary steerable drilling technology is widely used in extended reach well, labyrinth horizontal well and geologic steering drilling.

Rotary steerable drilling system is made up of ground monitoring system, both-way communication system, underground survey control system three parts.Steering tool working condition under the ground monitoring system monitor well, the real-time tracking well track is analyzed drilled wellbore trajectories and the departure degree that designs track, and adjustment is treated to produce new borehole track control instruction by drilling well eye track; Underground survey control system realizes that the down-hole is with boring functions such as parameter measurement (survey data such as instrument attitude parameter and MWD/LWD), information communication, steering tool control; The both-way communication system arrives ground with the underground survey information uploading; Directly pass to supervisory control comuter by communication cable or data line; Ground monitoring system carries out the well track trace analysis, descends transmission control system to instruct the down-hole controlling organization then, realizes the real-time monitoring to well track.

Because can there be deviation in drilled wellbore trajectories with the design borehole track, geologic objective also possibly change, and therefore, can carry out borehole track adjustment design in the real brill process.After deviation exceeded allowed band or the design of adjustment borehole track, the breath (instruction and data) of all must delivering a letter was down controlled the execution of rotary steering mechanism.Because various interference of noise, transmission and decoding error appear in information transmission easily.For the breath that guarantees down to deliver a letter is correctly received the decode, the information that usually down-hole is received the decode passes back to the ground receiving element again.When back information with under deliver a letter breath when consistent, could confirm that the down-hole has correctly received the decode down the breath of delivering a letter; When back information with under deliver a letter breath when inconsistent, the breath of must delivering a letter down again.At present, the rate of information throughput of rotary steerable drilling system is also very low, therefore, passes down continually, with the operating efficiency that has a strong impact on rotary steerable drilling system.Under the breath of delivering a letter influence borehole track control effect less again.

Summary of the invention

The present invention solves the existing in prior technology technical problem; A kind of borehole track design parameters and Surveying Control Point data of in steering tool, prestoring are provided; When brill reaches Surveying Control Point; Send simply and be easy to identified signal to the down-hole steering tool; Parameter measurement is carried out in the down-hole, trace analysis calculates and directly generate steering tool control instruction and controlling parameter, reduces down to pass information content, improves system reliability; Satisfy the requirement of downhole intelligent guiding control better, improve a kind of borehole track control method and the system thereof of rotary steerable drilling system operating efficiency.

Above-mentioned technical problem of the present invention mainly is able to solve through following technical proposals:

A kind of borehole track control method is characterized in that, may further comprise the steps:

Step 1, steering tool are bored preparation process down: promptly carry out drilling tool preparation by shaping-orientation BHA and drill column structure, the scene is measured into the well drilling tool, is pressed into the well order drilling tool parameter is numbered and write down to drilling tool;

Step 2 is provided with guiding initialization parameter, and NDS is tested, and whether checking system work is normal, and the normal back of test guidance system way-type drilling unit begins to bore down;

After getting into the end under the step 3, drilling tool, the initialization parameter that is provided with in 2 set by step is rotated guiding and creeps into work; Work is monitored borehole track simultaneously, and adjusts orbit Design according to the data in real time of monitoring;

Step 4 finishes the steerable drilling operation, trips out steering tool.

A kind of new borehole track method for supervising of the proposition of the invention property; Preceding borehole track design object parameter, pattern number, track node parameter, initial depth and the Surveying Control Point degree of depth of in the steering tool memory and in the ground monitoring computer, prestoring of following brill, monitoring objective and deviation etc.When ground monitoring brill reaches the Surveying Control Point degree of depth; Send the job instruction that is easy to discern to the down-hole; The down-hole according to designing a model and the track node parameter of the depth data that reads, employing, is calculated the orbit Design data of corresponding well depth by the indicated depth data of regular reading command automatically; And measure the drilled wellbore trajectories parameter and upload the underground survey parameter, the orbit monitoring analysis is carried out on down-hole and ground simultaneously.If deviation is less than the control target, then directly generate control instruction according to the down-hole depth data that prestores, the action of control rotary steerable tool executing agency, ground monitoring system carries out necessary supervision to steering tool.If deviation greater than the control target, can directly be carried out track adjustment design by the down-hole by design constraint, and revise the track node parameter that prestores; Also can carry out track adjustment design, following biography orbit Design key parameter and storage by ground monitoring system.Have only when the geology target changes, just must pass target data or track adjustment design key parameter down.

In above-mentioned a kind of borehole track control method, in the said step 2, the concrete steps that guiding initialization parameter is set are following:

Step 2.1 is provided with the borehole track design data: storage well orbit Design model and design track node data in steering tool comprise well depth, hole angle and azimuth;

Step 2.2 is provided with Surveying Control Point: in ground monitoring system and steering tool, press well depth sequential storage Surveying Control Point depth data simultaneously;

Step 2.3 is provided with other guiding parameter: the initial controlling parameter of steering tool, steering tool and MWD/LWD survey mark position, deviational survey data computation method are set, allow track control deviation and adjustment hole curvature.

In above-mentioned a kind of borehole track control method, in the said step 3, the concrete steps of well being carried out orbit monitoring are following:

Step 3.1 is bored when reaching the Surveying Control Point degree of depth when ground system monitors, and sends to the down-hole and measures control instruction, and the well bore parameter measurement is carried out in the down-hole;

Step 3.2 uploads to ground system with the underground survey result parameter, and follow the tracks of and variance analysis drilled wellbore trajectories according to the known depth data simultaneously on down-hole and ground;

Step 3.3 is calculated steering tool control parameter based on the variance analysis result with design track node data;

Step 3.4, steering tool lead by the controlling parameter that calculates and creep into, and upload the steering tool operating attitude simultaneously to ground monitoring system;

Step 3.5 under the guidance system normal operation, continues to lead when creeping into next Surveying Control Point, returns step 3.1;

Step 3.6 is if guidance system then carries out the comprehensive analysis of system and decision-making not by the action of expection attitude, decision step operation down.

In above-mentioned a kind of borehole track control method, in the described step 3, the concrete operations step of adjusting orbit Design according to the data in real time of monitoring is following:

Step 4.1, when deviation exceeded allowed band, borehole track adjustment design was carried out by adjustment design limiting condition automatically in the down-hole, and will design major parameter and upload to ground system and confirm:

Step 4.11 is chosen adjustment point position.Choose a bit in former design track minimum distance point the place ahead, spacing is Δ L;

Step 4.12 is calculated adjustment point parameter.Calculate adjustment point hole deviation, orientation and coordinate based on spacing for Δ L;

Step 4.13, carry out track adjustment design: accurately to adjust to former design track is example, carries out track adjustment design by tapered plane method model;

According to allowing steering tool deflecting ability K, choose K₁≤K, then K₂=f (K₁);

If K₂≤K changes step 4.14; Otherwise adjustment Δ L length is changeed step 4.12;

Step 4.14 is uploaded the adjustment design parameters: upload track adjustment design result data Δ L, K₁, K₂

Step 4.15, preserve the design result data: the down-hole receives after ground system confirms information, preserves the adjustment design result.

Step 4.2, when the geology target changes, adopt following two kinds of adjustment designs:

Step 4.21, ground are carried out track adjustment design, and pass the design result parameter down;

Step 4.22, underground passes new target data, and design is adjusted in the down-hole, and the passback design result is confirmed;

Step 4.3 is monitored by borehole track adjustment design, and returns the borehole track monitoring work of carrying out.

In above-mentioned a kind of borehole track control method, in the described step 3.1, send the measurement control instruction to the down-hole and select to select below the execution steps A or select step B:

Select steps A: the simple pointer job instruction: ground and down-hole are by Surveying Control Point depth order storage well depth data; When ground monitoring reaches each Surveying Control Point well depth to brill; Send the well depth arriving signal to the down-hole, after the down-hole receives instruction, carry out the deviational survey operation by established procedure; Record deviational survey parameter and corresponding depth measurement data are carried out orbit monitoring analysis and guiding control operation.

Select step B: two pointer job instructions: instruction 1, measure control basic point pointer, for sending instructions; Control pass point pointer is measured in instruction 2, and it is optional instruction to instruct the basic point of 1 current indication to be starting point.The well depth data are stored by the Surveying Control Point depth order in ground and down-hole, and basic point is indicated.Reach when measuring control basic point well depth when ground monitors to bore, to send instruction 1 to the down-hole; Reach when measuring control pass point well depth when ground monitors to bore, to look borehole track control and to determine whether to send and instruct 2 to the down-hole.After the down-hole receives instruction, carry out the deviational survey operation by established procedure, record deviational survey parameter and the indicated corresponding depth measurement data of instruction are carried out orbit monitoring analysis and guiding control operation.

In above-mentioned a kind of borehole track control method, the concrete operation method of step 3.2 is following:

Step 3.21 is calculated shaft bottom hole deviation and orientation.Well bore parameter, rotary steerable tool survey mark according to rotary steerable tool and MWD/LWD two measuring points calculate shaft bottom hole angle and azimuth from bottom hole spacing and steering tool running parameter;

Step 3.22, deviational survey data computation: the deviational survey data that comprise the hole deviation parameter that calculates in the step 3.21 are carried out drilled wellbore trajectories calculating by deviational survey data computation method is set;

Step 3.23; Trajector deviation is analyzed: by scan method is set the design track is carried out scanning analysis; Obtain the minimum range point on the design track, calculate actual path and offset distance, grid deviation, hole deviation and the azimuth deviation, vector deviation and the hole curvature deviation data that design track.

A kind of system that uses the borehole track control method is characterized in that, comprising:

One ground monitoring system: be used for real-time collecting underground survey data and send the work of control instruction control steering tool according to survey data;

One information uploading communication module: be used for real-time Transmission steering tool and MWD/LWD survey data and give ground monitoring system;

Pass communication module under one information: be used for the control instruction that the real-time Transmission ground monitoring system sends and give steering tool;

One MWD/LWD steering tool: be used for real-time control measurement downhole data and these data are transferred to ground monitoring system through the information uploading communication module;

One rotary steerable tool: be used for guiding and creep into borehole track.

Therefore, the present invention has following advantage: in steering tool, prestore borehole track design parameters and Surveying Control Point data, when brill reaches Surveying Control Point; Send simply and be easy to identified signal to the down-hole steering tool; Parameter measurement is carried out in the down-hole, trace analysis calculates and directly generate steering tool control instruction and controlling parameter, reduces down to pass information content, improves system reliability; Satisfy the requirement of downhole intelligent guiding control better, improve the operating efficiency of rotary steerable drilling system.

Description of drawings

Fig. 1 is a structural principle sketch map of the present invention.

Fig. 2 is a workflow sketch map of the present invention.

Fig. 3 is design borehole track and Surveying Control Point sketch map.

The specific embodiment

Pass through embodiment below, and combine accompanying drawing, do further bright specifically technical scheme of the present invention.

Embodiment:

Under given drilling geology target conditions, carry out the borehole track design based on rotary steerable tool deflecting ability and drilling technology requirement etc.; In conjunction with bottomhole assembly BHA and drilling parameter BHA is carried out mechanical analysis; Confirm the relation of the control of rotary steerable tool under ideal conditions parameter (thrust or bent angle, tool-face) and bit side force or build angle rate, analysis result or empirical value are controlled the initial value of parameter as rotary steerable tool; After steering tool creeps into certain drilling depth, with the real result that bores rotary steerable tool control parameter is adjusted again, reach the purpose of automatic control borehole track.

Be rotated guiding with the three-dimensional horizontal well of a bite and be controlled to be example; These well design object data: starting point vertical depth 1046.97m, northern coordinate-134.15m, eastern coordinate 2656.86m; Terminating point vertical depth 1045.00m, northern coordinate-877.16m, eastern coordinate 2786.80m; Horizontal segment length 754.29m, 90.15 ° of hole angles, 170.08 ° at azimuth.

Adopt tapered plane circular arc method for designing, the dark KOP=140.00m of kickoff point (KOP), hole curvature is respectively: K₁=3 °/30m, K₂=5 °/30m, the design segment data is seen table 1.

The three-dimensional horizontal well design of table 1 segment data

In the present embodiment, rotary steerable drilling system job step is following:

(1) steering tool bores down and prepares

Carry out drilling tool preparation by shaping-orientation BHA and drill column structure.The scene is measured into the well drilling tool, is pressed into the well order drilling tool parameter is numbered and write down to drilling tool.

(2) the guiding basic data is set

1. the borehole track design data is set.Storage well orbit Design model and design track node data (well depth, hole angle and azimuth) in steering tool.

2. Surveying Control Point is set.In ground monitoring system and steering tool, press well depth sequential storage Surveying Control Point depth data simultaneously.

According to table 1 design segment data, the plan of establishment of a kind of Surveying Control Point degree of depth is as shown in Figure 3.First arc section is two-dimentional borehole track, and it is Surveying Control Point with having bored single well depth point that the track section node can be set; Second arc section is three-dimensional borehole track, and it is big Surveying Control Point with having bored single well depth that the track section node is set, and single is replenished at 1 is closely spaced Surveying Control Point; To steady lower curved section, can bore the column well depth is big Surveying Control Point, and middle is little Surveying Control Point with single spacing.

3. other guiding parameter is set.The initial controlling parameter of steering tool, steering tool and MWD/LWD survey mark position, deviational survey data computation method are set, allow track control deviation and adjustment hole curvature etc.

(3) system testing is bored with following

Before under steering tool, boring, NDS is tested, whether checking system work is normal.The test normal rear of guidance system drilling tool capable of being combined bores down.

(4) beginning guiding creeps into

After getting into the end under the drilling tool, be rotated guiding by the initialization parameter that is provided with and creep into work.

(5) borehole track monitoring

1. bore when reaching the Surveying Control Point degree of depth when ground system monitors, send to the down-hole and measure control instruction, the well bore parameter measurement is carried out in the down-hole.

The definite of Surveying Control Point is principle to satisfy the requirement of track Control Engineering, and generally including borehole track design node is Surveying Control Point with having bored the single degree of depth.Single when being Surveying Control Point to have bored, carry out deviational survey when making up a joint whenever suspending circulation, with the static hole deviation parameter that records as real foundation of boring track following and variance analysis calculating.Can eliminate the influence of underground vibrating like this, both can obtain survey data accurately, save the static measurement time again, also can satisfy the requirement of on the engineering borehole track being controlled measurement result.

With two pointer job instructions is example, changes the well section at direction of deflection, serves as to measure the control basic point with the orbit Design node with having bored single; In order to implement meticulousr borehole track control strategy,, design hole deviation and orientation can increase by one or two measurement control pass point between changing well section greatly, be single.For long steady tilted section, be big measurement control basic point with column, single in the column is little measurement control pass point, according to the working control needs, sends instruction and carries out the borehole track monitoring, can reduce teletype command down like this.

2. the underground survey result parameter is uploaded to ground system, follow the tracks of and variance analysis drilled wellbore trajectories according to the known depth data simultaneously on down-hole and ground.

(1) calculates shaft bottom hole deviation and orientation.Well bore parameter, rotary steerable tool survey mark according to rotary steerable tool and MWD/LWD two measuring points calculate shaft bottom hole angle and azimuth from bottom hole spacing and steering tool running parameter etc.;

(2) deviational survey data computation.By deviational survey data computation method is set the deviational survey data that comprise the hole deviation parameter that calculates in (1) are carried out drilled wellbore trajectories calculating.

(3) trajector deviation analysis.By scan method is set the design track is carried out scanning analysis, obtain the minimum range point on the design track, calculate actual path and the data such as offset distance, grid deviation, hole deviation and azimuth deviation, vector deviation and hole curvature deviation that design track.

3. calculate the steering tool controlling parameter according to the variance analysis result with design track node data.

4. steering tool leads by the controlling parameter that calculates and creeps into, and uploads the steering tool operating attitude simultaneously to ground monitoring system.

5. under the guidance system normal operation, continue to lead when creeping into next Surveying Control Point, return step 1.

6. if guidance system not by the action of expection attitude, then carries out the comprehensive analysis of system and decision-making, decision step operation down.

(6) track adjustment design

1. when deviation exceeds allowed band, borehole track adjustment design is carried out by adjustment design limiting condition automatically in the down-hole, and will design major parameter and upload to ground system and confirm.

(1) chooses adjustment point position.Choose a bit in former design track minimum distance point the place ahead, spacing is Δ L.

(2) calculate adjustment point parameter.Calculate adjustment point hole deviation, orientation and coordinate based on spacing for Δ L.

(3) carry out track adjustment design.Accurately to adjust to former design track is example, carries out track adjustment design by tapered plane method model.

According to allowing steering tool deflecting ability K, choose K₁≤K, then K₂=f (K₁).

If K₂≤K changes step (4); Otherwise adjustment Δ L length is changeed step (2).

(4) upload the adjustment design parameters.Upload track adjustment design result data Δ L, K₁, K₂

(5) preserve the design result data.The down-hole receives after ground system confirms information, preserves the adjustment design result.

2. when the geology target changes, can adopt following two kinds of adjustment designs.

(1) track adjustment design is carried out on ground, and passes the design result parameter down.

(2) underground passes new target data, and design is adjusted in the down-hole, and the passback design result is confirmed.

3. monitor by borehole track adjustment design, change step (five) 1.

(7) finish the steerable drilling operation

When brill reaches re-set target and maybe need pull out of hole more situation such as bit change, then finish guiding to creep into, carry out subsequent jobs such as circulation of drilling fluid and trip-out.

In the present embodiment, the system of the borehole track control method of use comprises:

One ground monitoring system: be used for real-time collecting underground survey data and send the work of control instruction control steering tool according to survey data;

One information uploading communication module: be used for real-time Transmission steering tool and MWD/LWD survey data and give ground monitoring system;

Pass communication module under one information: be used for the control instruction that the real-time Transmission ground monitoring system sends and give steering tool;

One MWD/LWD steering tool: be used for real-time control measurement downhole data and these data are transferred to ground monitoring system through the information uploading communication module;

One rotary steerable tool: be used for guiding and creep into borehole track.

Specific embodiment described herein only is that the present invention's spirit is illustrated.Person of ordinary skill in the field of the present invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.

Claims (7)

1. a borehole track control method is characterized in that, may further comprise the steps:

Step 1, steering tool are bored preparation process down: promptly carry out drilling tool preparation by shaping-orientation BHA and drill column structure, the scene is measured into the well drilling tool, is pressed into the well order drilling tool parameter is numbered and write down to drilling tool;

Step 2 is provided with guiding initialization parameter, and NDS is tested, and whether checking system work is normal, and the normal back of test guidance system way-type drilling unit begins to bore down;

After getting into the end under the step 3, drilling tool, the initialization parameter that is provided with in 2 set by step is rotated guiding and creeps into work; Work is monitored borehole track simultaneously, and adjusts orbit Design according to the data in real time of monitoring;

Step 4 finishes the steerable drilling operation, trips out steering tool.

2. a kind of borehole track control method according to claim 1 is characterized in that, in the said step 2, the concrete steps that guiding initialization parameter is set are following:

Step 2.1 is provided with the borehole track design data: storage well orbit Design model and design track node data in steering tool comprise well depth, hole angle and azimuth;

Step 2.2 is provided with Surveying Control Point: in ground monitoring system and steering tool, press well depth sequential storage Surveying Control Point depth data simultaneously;

Step 2.3 is provided with other guiding parameter: the initial controlling parameter of steering tool, steering tool and MWD/LWD survey mark position, deviational survey data computation method are set, allow track control deviation and adjustment hole curvature.

3. a kind of borehole track control method according to claim 1 is characterized in that, in the said step 3, the concrete steps of well being carried out orbit monitoring are following:

Step 3.1 is bored when reaching the Surveying Control Point degree of depth when ground system monitors, and sends to the down-hole and measures control instruction, and the well bore parameter measurement is carried out in the down-hole;

Step 3.2 uploads to ground system with the underground survey result parameter, and follow the tracks of and variance analysis drilled wellbore trajectories according to the known depth data simultaneously on down-hole and ground;

Step 3.3 is calculated steering tool control parameter based on the variance analysis result with design track node data;

Step 3.4, steering tool lead by the controlling parameter that calculates and creep into, and upload the steering tool operating attitude simultaneously to ground monitoring system;

Step 3.5 under the guidance system normal operation, continues to lead when creeping into next Surveying Control Point, returns step 3.1;

Step 3.6 is if guidance system then carries out the comprehensive analysis of system and decision-making not by the action of expection attitude, decision step operation down.

4. a kind of borehole track control method according to claim 1 is characterized in that, in the described step 3, the concrete operations step of adjusting orbit Design according to the data in real time of monitoring is following:

Step 4.1, when deviation exceeded allowed band, borehole track adjustment design was carried out by adjustment design limiting condition automatically in the down-hole, and will design major parameter and upload to ground system and confirm:

Step 4.11, choose adjustment point position: choose a bit in former design track minimum distance point the place ahead, spacing is Δ L;

Step 4.12 is calculated adjustment point parameter: calculate adjustment point hole deviation, orientation and coordinate based on spacing for Δ L;

Step 4.13, carry out track adjustment design: accurately to adjust to former design track is example, carries out track adjustment design by tapered plane method model;

According to allowing steering tool deflecting ability K, choose K₁≤K, then K₂=f (K₁);

If K₂≤K changes step 4.14; Otherwise adjustment Δ L length is changeed step 4.12;

Step 4.14 is uploaded the adjustment design parameters: upload track adjustment design result data Δ L, K₁, K₂

Step 4.15, preserve the design result data: the down-hole receives after ground system confirms information, preserves the adjustment design result;

Step 4.2, when the geology target changes, adopt following two kinds of adjustment designs:

Step 4.21, ground are carried out track adjustment design, and pass the design result parameter down;

Step 4.22, underground passes new target data, and design is adjusted in the down-hole, and the passback design result is confirmed;

Step 4.3 is monitored by borehole track adjustment design, and returns the borehole track monitoring work of carrying out.

5. a kind of borehole track control method according to claim 3 is characterized in that, in the described step 3.1, sends the measurement control instruction to the down-hole and selects to select below the execution steps A or select step B:

Select steps A: the simple pointer job instruction: ground and down-hole are by Surveying Control Point depth order storage well depth data; When ground monitoring reaches each Surveying Control Point well depth to brill; Send the well depth arriving signal to the down-hole; After the down-hole receives instruction; Program is carried out the deviational survey operation in accordance with regulations; Record deviational survey parameter and corresponding depth measurement data are carried out orbit monitoring analysis and guiding control operation;

Select step B: two pointer job instructions: instruction 1, measure control basic point pointer, for sending instructions; Instruction 2; Measure control pass point pointer, it is optional instruction to instruct the basic point of 1 current indication to be starting point; Ground and down-hole are by Surveying Control Point depth order storage well depth data; And basic point indicated, when monitoring to bore, ground reaches when measuring control basic point well depth, send instruction 1 to the down-hole; When monitoring to bore, ground reaches when measuring control pass point well depth; Looking borehole track control need determine whether to send instruction 2 to the down-hole; After the down-hole receives instruction; Carry out the deviational survey operation by established procedure, record deviational survey parameter and the indicated corresponding depth measurement data of instruction are carried out orbit monitoring analysis and guiding control operation.

6. a kind of borehole track control method according to claim 3 is characterized in that the concrete operation method of step 3.2 is following:

Step 3.21, calculate shaft bottom hole deviation and orientation: well bore parameter, rotary steerable tool survey mark according to rotary steerable tool and MWD/LWD two measuring points calculate shaft bottom hole angle and azimuth from bottom hole spacing and steering tool running parameter;

Step 3.22, deviational survey data computation: the deviational survey data that comprise the hole deviation parameter that calculates in the step 3.21 are carried out drilled wellbore trajectories calculating by deviational survey data computation method is set;

Step 3.23; Trajector deviation is analyzed: by scan method is set the design track is carried out scanning analysis; Obtain the minimum range point on the design track, calculate actual path and offset distance, grid deviation, hole deviation and the azimuth deviation, vector deviation and the hole curvature deviation data that design track.

7. a system that uses the described a kind of borehole track control method of claim 1 is characterized in that, comprising:

One ground monitoring system: be used for real-time collecting underground survey data and send the work of control instruction control steering tool according to survey data;

One information uploading communication module: be used for real-time Transmission steering tool and MWD/LWD survey data and give ground monitoring system;

Pass communication module under one information: be used for the control instruction that the real-time Transmission ground monitoring system sends and give steering tool;

One MWD/LWD steering tool: be used for real-time control measurement downhole data and these data are transferred to ground monitoring system through the information uploading communication module;

One rotary steerable tool: be used for guiding and creep into borehole track.

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