CN102953722A - Anti-collision obstacle bypassing method and system during drilling operation - Google Patents

Abstract

The invention discloses an anti-collision obstacle bypassing method and an anti-collision obstacle bypassing system during drilling operation, so that the defects of error-ellipse existence and poor real-time performance of the existing measurement while drilling system are overcome. The method comprises the following steps that the magnetic positioning technology is adopted to predict and obtain a first predicting track of an operating well, a first minimum distance between the operating well in the first predicting track and the existing reference well is obtained, and whether the obstacle bypassing operation is required by the operating well or not is determined in accordance with the first minimum distance and a preset safety radius of the operating well. According to the embodiment of the invention, the operating well can be effectively guided to bypass the existing well, so as to prevent the two wells from collision.

Description

Anti-collision in a kind of drillng operation is around the barrier method and system

Technical field

The present invention relates to the anti-collision well operations in the drilling process, relate in particular in a kind of drillng operation anti-collision around the barrier method and system.

Background technology

The cluster well well spacing of offshore work platform is less, and there is the danger that collides existing well bore track in well in operation in drilling process, if two mouthfuls of wells bump, will bring massive losses.Therefore day by day urgent for the demand that can accurately control the technology of distance between well in operation and the existing well.

At present avoid collision between well and the well with trajectory measurement and control tool.The general employing of traditional borehole trace control tool measurement-while-drilling system (MWD) estimated well track based on the mode of earth's magnetic field, terrestrial gravitation field measurement, generally all exist evaluated error and error ellipse cumulative gradually with the degree of depth, have larger limitation.And evaluated error and error of calculation finally can cause the larger error ellipse of error.In addition and since mwd system apart from the distance of drill bit generally about 10 meters, also relatively poor apart from realtime control for drill bit and other wells, the danger that still exists well track to collide in the drilling process.

Summary of the invention

Technical problem to be solved by this invention is to overcome present measurement-while-drilling system to have error ellipse and the relatively poor defective of real-time.

In order to solve the problems of the technologies described above, the invention provides anti-collision in a kind of drillng operation around the barrier method, comprising:

Adopt magnetic orientation technological prediction to obtain the first prediction locus of well in operation;

Obtain described well in operation in described the first prediction locus and existing with reference to the first minimum range between the well;

Whether needs carry out around the barrier operation according to described the first minimum range and for the default radius of safety of described well in operation is determined described well in operation.

Preferably, obtain described well in operation in described prediction locus and existing with reference to the first minimum range between the well, comprising:

Utilize magnetic survey apart from system, obtain a plurality of future positions in the described well in operation according to described with reference to well prediction, obtain described well in operation in described the first prediction locus and described with reference to described the first minimum range between the well according to described a plurality of future positions.

Preferably, obtain described well in operation in described the first prediction locus and described with reference to the first minimum range between the well according to described a plurality of future positions, comprising:

To choose certain reference point identical with certain future position vertical depth in the described well in operation in reference to well be benchmark described, at the described reference field of determining to include a plurality of paragraphs in reference to well, obtain the minimum range of described certain future position and described reference field as described certain future position and described minimum range with reference to well according to described a plurality of paragraphs;

According to each future position in the described well in operation and described minimum range with reference to well, obtain described well in operation in described the first prediction locus with described described the first minimum range with reference to well.

Preferably, whether needs carry out comprising around the barrier operation according to described the first minimum range and for the default radius of safety of described well in operation is determined described well in operation:

Described minimum range is dwindled the measurement spacing in the described magnetic orientation technology and is adopted described magnetic orientation technological prediction to obtain the second prediction locus of described well in operation when being the default radius of safety of described well in operation;

To the second prediction locus of described well in operation and radius of safety and well track design proportion constant with reference to the distance of well the second minimum distance correspondence position, described well in operation, obtain described well in operation in the curvature at described second distance place according to the shaft bottom of described well in operation;

Determine according to described curvature whether described well in operation can carry out around the barrier operation.

The present invention also provides anti-collision in a kind of drillng operation around the barrier system, comprising:

Prediction module is configured to adopt magnetic orientation technological prediction to obtain the first prediction locus of well in operation;

Acquisition module is configured to obtain described well in operation in described the first prediction locus and existing with reference to the first minimum range between the well;

Determination module is configured to whether needs carry out around the barrier operation according to described the first minimum range and for the default radius of safety of described well in operation is determined described well in operation.

Preferably, described acquisition module comprises:

The first predicting unit is configured to utilize magnetic survey apart from system, according to the described a plurality of future positions that obtain in the described well in operation of predicting with reference to well;

Distance acquiring unit is configured to obtain described well in operation in described the first prediction locus and described with reference to described the first minimum range between the well according to described a plurality of future positions.

Preferably, described distance acquiring unit comprises:

Choose subelement, be configured to described that to choose certain reference point identical with certain future position vertical depth in the described well in operation in reference to well be benchmark, at the described reference field of determining to include a plurality of paragraphs in reference to well;

First obtains subelement, is configured to obtain the minimum range of described certain future position and described reference field as described certain future position and described minimum range with reference to well according to described a plurality of paragraphs;

Second obtains subelement, is configured to according to each future position in the described well in operation and described minimum range with reference to well, obtain described well in operation in described the first prediction locus with described described the first minimum range with reference to well.

Preferably, described determination module comprises:

The second predicting unit is configured to described minimum range less than for the default radius of safety of described well in operation the time, dwindles the measurement spacing in the described magnetic orientation technology and adopts described magnetic orientation technological prediction to obtain the second prediction locus of described well in operation;

The curvature acquiring unit, be configured to according to the shaft bottom of described well in operation to obtain described well in operation in the curvature at described second distance place to the second prediction locus of described well in operation and radius of safety and well track design proportion constant with reference to the distance of well the second minimum distance correspondence position, described well in operation;

Determining means is configured to determine according to described curvature whether described well in operation can carry out around the barrier operation.

The application's embodiment is different from that mode that tradition adopt to estimate obtains well in operation and with reference to the distance between the well, accurately measure well in operation and with reference to the actual distance between the well but adopt based on the 3-D scanning of magnetic orientation commercial measurement data, and carry out accordingly anti-collision and analyze around barrier, improved certainty of measurement, for the operating personnel provides accurately around the barrier scheme, can effectively instruct well in operation to get around existing well, prevent that two mouthfuls of wells from producing collision.The application's embodiment has solved at present and has estimated and the lower problem of accuracy to have degree of accuracy advantages of higher around the main well track that relies on of barrier, compares.The application's embodiment is not only applicable to the needs of operation on the sea cluster well etc., can satisfy equally the anti-collision of land well in operation around the needs of barrier.The application's embodiment goes for the oil drilling industry, is equally applicable to other drilling well class industries.

Other features and advantages of the present invention will be set forth in the following description, and, partly from manual, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in manual, claims and accompanying drawing.

Description of drawings

Accompanying drawing is used to provide the further understanding to technical solution of the present invention, and consists of the part of manual, is used from the application's embodiment one and explains technical scheme of the present invention, does not consist of the restriction to technical solution of the present invention.

Fig. 1 is that anti-collision in the drillng operation of the embodiment of the present application is around the schematic flow sheet of barrier method.

Fig. 2 is the scene schematic diagram of the 3-D scanning used in the embodiment of the present application.

Fig. 3 is with the scene schematic diagram of determining flatly future position in the well in operation with reference to well in the embodiment of the present application.

Fig. 4 is the schematic flow sheet that calculates around barrier in the embodiment of the present application.

Fig. 5 is that anti-collision in the drillng operation of the embodiment of the present application is around the organigram of barrier system.

Fig. 6 is the organigram of middle acquisition module embodiment illustrated in fig. 5.

Fig. 7 is the organigram of distance acquiring unit shown in Figure 6.

Fig. 8 is the organigram of middle determination module embodiment illustrated in fig. 5.

The specific embodiment

For making the purpose, technical solutions and advantages of the present invention clearer, hereinafter be elaborated in connection with the embodiment of accompanying drawing to the application.Need to prove, in the situation that do not conflict, the embodiment among the application and the feature among the embodiment be any combination mutually.

As shown in Figure 1, the anti-collision in the drillng operation of the embodiment of the present application mainly comprises the steps around the barrier method.

Step S110 adopts the well track of magnetic orientation commercial measurement well in operation, carries out trajectory predictions according to the development and change rule of the well track of well in operation, obtains the first prediction locus of well in operation.Wherein, the development and change rule of this well track comprises the rate of over-all angle change of well track.

Step S120 obtains well in operation and existing with reference to the position relationship between the well, comprises well in operation and with reference to the distance and bearing relation of well etc.

Step S130 by 3-D scanning, obtains well in operation in this first prediction locus and with reference to the first minimum range between the well.

Step S140, when well in operation in this section the first prediction locus and with reference to the first minimum range between the well when being the predefined radius of safety of well in operation, think well in operation and may bump with reference to well.At this moment, need to design new well track in the current shaft bottom of well in operation, existing with reference to well effectively to avoid.

Among the application's the embodiment, adopt 3-D scanning mode as shown in Figure 2, determine in one section well track of well in operation, well in operation and with reference to the first minimum range between the well.

Among Fig. 2, W0 represents well in operation, and W1, W2 and W3 represent three mouthfuls with reference to well; P0_0, P0_1 ... a series of future position in the expression well in operation; P1_0, P1_1 ... represent with reference to a series of reference points among the well W1, P2_0, P2_1 ... represent with reference to a series of reference points among the well W2, P3_0, P3_1 ... expression is with reference to a series of reference points among the well W3.

3-D scanning among the step S130 specifically comprises following step.

Flatly with reference to well, the future position i at well in operation different depth place adopts following expression to calculate this future position with respect to the distance D of well in operation for certain _Ij

$D_{\mathrm{ij}}=\sqrt{\mathrm{\&Delta;}{\mathrm{<figure-callout\; id="2"\; label="H\; ij"\; filenames="HDA00002547184800021.png"\; state="\{\{state\}\}">H</figure-callout>}}_{\mathrm{ij}}^{}+\mathrm{\&Delta;}{\mathrm{<figure-callout\; id="2"\; label="N\; ij"\; filenames="HDA00002547184800021.png"\; state="\{\{state\}\}">N</figure-callout>}}_{\mathrm{ij}}^{}+\mathrm{\&Delta;}{\mathrm{<figure-callout\; id="2"\; label="E\; ij"\; filenames="HDA00002547184800021.png"\; state="\{\{state\}\}">E</figure-callout>}}_{\mathrm{ij}}^{}}$ Formula (1)

Wherein, i represents the numbering of future position in the well in operation, and j represents the numbering with reference to reference point in the well.

Δ H _IjBe illustrated in future position i and poor with reference to the vertical depth of reference point j in the well in the well in operation.

Δ N _IjBe illustrated in future position i and poor with reference to the shifting between south and north of reference point j in the well in the well in operation.

Δ E _IjBe illustrated in future position i in the well in operation and thing displacement difference with reference to reference point j in the well.

The application's embodiment utilizes magnetic survey to predict the future position that obtains in the well in operation apart from system according to the survey data of reference well.The parameter of future position comprises vertical depth, shifting between south and north and thing displacement, and these parameters can transform acquisition according to the survey data such as well depth, azimuth and hole deviation of reference well.

Think in the well in operation and to determine that a future position is example, in the reference well, determine the method for the reference point identical with future position vertical depth in the well in operation, with reference among the figure 3 shown in the dotted line.

In the reference well, can respectively choose up and down respectively n point (coordinate of each point for reference to the well coordinate) from the some reference point identical with the future position vertical depth, put and reference point consists of the reference field that comprises 2n paragraph altogether for this 2n.The paragraph numbering can be the numbering of carrying out with natural code from top to bottom.

Because the paragraph distance between two points is crossed the accuracy decline that conference causes measurement in each reference field, therefore, paragraph length in the reference field is affected greatly the situation of measurement accuracy and precision, each paragraph in the reference field is carried out interpolate value to be processed, acquisition comprises a plurality of encoded points (there is shown segment number is the situation that 1 first paragraph carries out interpolation) of paragraph end points, and wherein two of reference field end points are also as two encoded points.Interpolation method is for to cut apart the well depth value with the minimum precision of needs.If paragraph length is less and can not affect the situation of measurement accuracy and precision in the reference field, then also can not carry out the interpolate value of paragraph is processed.

Adopt future position in above-mentioned expression formula (1) the computational tasks well (among the figure take this future position of P02 as example) and with reference to the distance between each encoded point in each paragraph in the well, obtain accordingly the minimum range of future position and each paragraph.

The above-mentioned interpolate value that each paragraph in the reference field is carried out is processed, and all carries out following calculating.

Δ L=L2-L1 formula (2)

Δ H=H2-H1 formula (3)

Δ N=N2-N1 formula (4)

Δ E=E2-E1 formula (5)

$\frac{\mathrm{\&Delta;}{L}_i}{\mathrm{\&Delta;L}}=\frac{\mathrm{\&Delta;}{H}_i}{\mathrm{\&Delta;H}}=\frac{\mathrm{\&Delta;}{N}_i}{\mathrm{\&Delta;N}}=\frac{\mathrm{\&Delta;}{E}_i}{\mathrm{\&Delta;E}}$ Formula (6)

Wherein, L1, H1, N1 and E1 represent respectively well depth, vertical depth, shifting between south and north and the thing displacement of paragraph upper extreme point; L2, H2, N2 and E2 represent respectively well depth, vertical depth, shifting between south and north and the thing displacement of paragraph lower extreme point.

Determine the interpolation interval delta L that a paragraph is interior according to expression formula (6) _i, then determine the quantity m of encoded point according to expression formula (7).

Formula (7)

Wherein, symbol

Expression rounds up.

Calculate the coordinate of each encoded point in the paragraph according to expression formula (8), (9) and (10).

$H_k=\mathrm{<figure-callout\; id="1"\; label="H"\; filenames="HDA00002547184800021.png"\; state="\{\{state\}\}">H</figure-callout>}1+2*\mathrm{\&Delta;H}*\frac{k*\mathrm{\&Delta;}{L}_i}{\mathrm{\&Delta;L}}$ Formula (8)

$N_k=\mathrm{<figure-callout\; id="1"\; label="N"\; filenames="HDA00002547184800021.png"\; state="\{\{state\}\}">N</figure-callout>}1+2*\mathrm{\&Delta;N}*\frac{k*\mathrm{\&Delta;}{L}_i}{\mathrm{\&Delta;L}}$ Formula (9)

$E_k=\mathrm{<figure-callout\; id="1"\; label="E"\; filenames="HDA00002547184800021.png"\; state="\{\{state\}\}">E</figure-callout>}1+2*\mathrm{\&Delta;E}*\frac{k*\mathrm{\&Delta;}{L}_i}{\mathrm{\&Delta;L}}$ Formula (10)

Wherein, 1≤k≤m.

Calculate the distance that obtains with reference to the future position in the well (H, N, E) and each encoded point according to following expression (11).

$D_k=\sqrt{{(H-H_k)}^2+{(E-E_k)}^2+{(N-N_k)}^2}$ Formula (11)

Choose minimum D _k, and record segment in number.The D that this is minimum _kBe in one section first prediction locus of well in operation certain future position with reference to the corresponding reference field minimum range in the well, this minimum range also is this future position and with reference to the first minimum range of well.

All future positions in one section first prediction locus of well in operation are carried out above-mentioned processing successively, according to each future position in the well in operation with reference to the minimum range of well, obtain well in operation in the first prediction locus with the first minimum range with reference to well.Particularly, from the minimum range of each future position distance reference well of well in operation, choose reckling, as well in operation in the first prediction locus with reference to the first minimum range of well.

Among the above-mentioned steps S140, if judge well in operation and with reference to the first minimum range between the well less than may bump for the predefined radius of safety of well in operation the time, dwindle the measurement spacing of magnetic orientation and again carry out the magnetic orientation measurement, to carry out as described below calculating around barrier.

As shown in Figure 4, mainly comprise the steps around barrier calculating.

Step S141, dwindle the measurement spacing of magnetic orientation technology, the use measurement spacing less than the measurement spacing of using among the step S110 measured again to the well track of well in operation, obtain the intensive survey mark of well in operation, these intensive survey marks can show the orientation of well in operation and shape etc. more exactly.

Utilize the magnetic orientation survey data that well in operation is done correction, correction specifically to as if the well in operation prediction locus before the magnetic orientation survey mark.In case need to then will use the magnetic orientation system that the well track in well in operation shaft bottom is done closely spaced multimetering around barrier, to obtain accurate well in operation shaft bottom track data, the well in operation data that the measurement spacing of using before this with this data correction is larger.

Step S142, azimuth and the hole angle of the intensive survey mark of computational tasks well and place, well in operation shaft bottom well track.

Step S143 utilizes the intensive survey mark of well in operation and azimuth and the hole angle of place, well in operation shaft bottom well track to re-start trajectory predictions, obtains the second prediction locus of well in operation.

Step S144 according to coordinate parameters and the 3-D scanning of each intensive survey mark in the second prediction locus, calculate to obtain in the second prediction locus each intensive survey mark and with reference to the second minimum range Dmin between the well.

Step S145 judges whether that the second prediction locus drops within the radius of safety of well in operation, if the second prediction locus have a few all outside radius of safety R1, then do not need around barrier.

Step S146 calculates from the shaft bottom to the well in operation the second prediction rail and with reference to the distance L between well the second minimum distance correspondence position in well in operation.Like this, can be reduced to distance at a distance of L around barrier calculating, skew P=R1-Dmin can avoid colliding, and wherein R1 is the radius of safety of well in operation.

Step S147 calculates around the barrier radius R according to following expression (12), and according to the curvature K of following expression (13) computational tasks well in this second minimum distance _Min

$R=\frac{{\mathrm{<figure-callout\; id="3"\; label="P"\; filenames="HDA00002547184800021.png"\; state="\{\{state\}\}">P</figure-callout>}}^3+{\mathrm{<figure-callout\; id="3"\; label="L"\; filenames="HDA00002547184800021.png"\; state="\{\{state\}\}">L</figure-callout>}}^3}{4P}$ Formula (12)

$K_{\min }=\frac{180<figure-callout\; id="2"\; label="*\; C\; k"\; filenames="HDA00002547184800021.png"\; state="\{\{state\}\}">*</figure-callout>C_k{}_{}}{2*\mathrm{\&pi;}*R}$ Formula (13)

Wherein, C _kExpression well track design proportion constant.

Step S148 checks this curvature K _Min, such as curvature K _MinToo large, prove and can't get around, such as curvature K _MinSuitable, then can carry out around barrier.Curvature is suitable to refer to the curvature that calculates less than the maximum feasible curvature of operation, and the maximum feasible curvature of operation is by the field operation conditional decision.

Step S149 calculates partial node hole angle α according to following expression (14) and (15) _iWith azimuth Φ _i, and hole angle and azimuth be converted to vertical depth, shifting between south and north and thing displacement, then carry out the operation of well in operation, and whether normal according to the operation of the data of reference well and range finding pattern checking well in operation.

α _i=α ₁Formula (14)

${\mathrm{\&Phi;}}_i={\mathrm{\&Phi;}}_1\&PlusMinus;\frac{\mathrm{\&Delta;}{L}_i}{R}$ Formula (15)

Carry out operation around the barrier track according to segmentation, above-mentioned partial node refers to the end point of each segmentation.Δ L in the formula (15) _iThe length of segmentation, α ₁The hole angle of expression segmentation end point, Φ ₁The azimuth of expression segmentation end point.

As shown in Figure 5, the anti-collision in the drillng operation of the embodiment of the present application mainly comprises prediction module 510, acquisition module 520 and determination module 530 around the barrier system, wherein:

Prediction module 510 is configured to adopt magnetic orientation technological prediction to obtain the first prediction locus of well in operation;

Acquisition module 520 links to each other with prediction module 510, is configured to obtain described well in operation in described the first prediction locus and existing with reference to the first minimum range between the well;

Determination module 530 links to each other with acquisition module 520, is configured to whether needs carry out around the barrier operation according to described the first minimum range and for the default radius of safety of described well in operation is determined described well in operation.

As shown in Figure 6, above-mentioned acquisition module 520 comprises the first predicting unit 610 and distance acquiring unit 620.

The first predicting unit 610 is configured to utilize magnetic survey apart from system, according to the described a plurality of future positions that obtain in the described well in operation of predicting with reference to well.

Distance acquiring unit 620 links to each other with the first predicting unit 610, is configured to obtain described well in operation in described the first prediction locus and described with reference to described the first minimum range between the well according to described a plurality of future positions.

As shown in Figure 7, above-mentioned distance acquiring unit 620 comprises that choosing subelement 710, second chooses subelement 720 and the 3rd and choose subelement 730.

Choose subelement 710, be configured to described that to choose certain reference point identical with certain future position vertical depth in the described well in operation in reference to well be benchmark, at the described reference field of determining to include a plurality of paragraphs in reference to well.

First obtains subelement 720, and chooses subelement 710 and links to each other, and is configured to obtain the minimum range of described certain future position and described reference field as described certain future position and described minimum range with reference to well according to described a plurality of paragraphs.

Second obtains subelement 730, choose subelement 720 and link to each other with second, be configured to according to each future position in the described well in operation and described minimum range with reference to well, obtain described well in operation in described the first prediction locus with described described the first minimum range with reference to well.

As shown in Figure 8, above-mentioned determination module 530 comprises the second predicting unit 810, curvature acquiring unit 820 and determining means 830.

The second predicting unit 810 is configured to described minimum range less than for the default radius of safety of described well in operation the time, dwindles the measurement spacing in the described magnetic orientation technology and adopts described magnetic orientation technological prediction to obtain the second prediction locus of described well in operation.

Curvature acquiring unit 820, link to each other with the second predicting unit 810, be configured to according to the shaft bottom of described well in operation to obtain described well in operation in the curvature at described second distance place to the second prediction locus of described well in operation and radius of safety and well track design proportion constant with reference to the distance of well the second minimum distance correspondence position, described well in operation.

Determining means 830 links to each other with curvature acquiring unit 820, is configured to determine according to described curvature whether described well in operation can carry out around the barrier operation.

The application's embodiment adopts magnetic orientation technology detailed measurements well in operation track to revise data when the discovery risk of collision, and then prediction judges whether to exist risk of collision again, has reduced the disconnected possibility of erroneous judgement by correction.

Although the disclosed embodiment of the present invention as above, the embodiment that described content just adopts for the ease of understanding the present invention is not to limit the present invention.Those of skill in the art under any the present invention; under the prerequisite that does not break away from the disclosed spirit and scope of the present invention; can do any modification and variation in the details that reaches of implementing in form; but scope of patent protection of the present invention still must be as the criterion with the scope that appending claims was defined.

Claims (8)

1. the anti-collision in the drillng operation comprises around the barrier method:

Adopt magnetic orientation technological prediction to obtain the first prediction locus of well in operation;

Obtain described well in operation in described the first prediction locus and existing with reference to the first minimum range between the well;

Whether needs carry out around the barrier operation according to described the first minimum range and for the default radius of safety of described well in operation is determined described well in operation.

2. method according to claim 1 wherein, obtains described well in operation in described prediction locus and existing with reference to the first minimum range between the well, comprising:

Utilize magnetic survey apart from system, obtain a plurality of future positions in the described well in operation according to described with reference to well prediction, obtain described well in operation in described the first prediction locus and described with reference to described the first minimum range between the well according to described a plurality of future positions.

3. method according to claim 2 wherein, obtains described well in operation in described the first prediction locus and described with reference to the first minimum range between the well according to described a plurality of future positions, comprising:

To choose certain reference point identical with certain future position vertical depth in the described well in operation in reference to well be benchmark described, at the described reference field of determining to include a plurality of paragraphs in reference to well, obtain the minimum range of described certain future position and described reference field as described certain future position and described minimum range with reference to well according to described a plurality of paragraphs;

According to each future position in the described well in operation and described minimum range with reference to well, obtain described well in operation in described the first prediction locus with described described the first minimum range with reference to well.

4. method according to claim 1, wherein, whether needs carry out comprising around the barrier operation according to described the first minimum range and for the default radius of safety of described well in operation is determined described well in operation:

Described minimum range is dwindled the measurement spacing in the described magnetic orientation technology and is adopted described magnetic orientation technological prediction to obtain the second prediction locus of described well in operation when being the default radius of safety of described well in operation;

To the second prediction locus of described well in operation and radius of safety and well track design proportion constant with reference to the distance of well the second minimum distance correspondence position, described well in operation, obtain described well in operation in the curvature at described second distance place according to the shaft bottom of described well in operation;

Determine according to described curvature whether described well in operation can carry out around the barrier operation.

5. the anti-collision in the drillng operation comprises around the barrier system:

Prediction module is configured to adopt magnetic orientation technological prediction to obtain the first prediction locus of well in operation;

Acquisition module is configured to obtain described well in operation in described the first prediction locus and existing with reference to the first minimum range between the well;

Determination module is configured to whether needs carry out around the barrier operation according to described the first minimum range and for the default radius of safety of described well in operation is determined described well in operation.

6. system according to claim 5, wherein, described acquisition module comprises:

The first predicting unit is configured to utilize magnetic survey apart from system, according to the described a plurality of future positions that obtain in the described well in operation of predicting with reference to well;

Distance acquiring unit is configured to obtain described well in operation in described the first prediction locus and described with reference to described the first minimum range between the well according to described a plurality of future positions.

7. system according to claim 6, wherein, described distance acquiring unit comprises:

Choose subelement, be configured to described that to choose certain reference point identical with certain future position vertical depth in the described well in operation in reference to well be benchmark, at the described reference field of determining to include a plurality of paragraphs in reference to well;

First obtains subelement, is configured to obtain the minimum range of described certain future position and described reference field as described certain future position and described minimum range with reference to well according to described a plurality of paragraphs;

Second obtains subelement, is configured to according to each future position in the described well in operation and described minimum range with reference to well, obtain described well in operation in described the first prediction locus with described described the first minimum range with reference to well.

8. system according to claim 5, wherein, described determination module comprises:

The second predicting unit is configured to described minimum range less than for the default radius of safety of described well in operation the time, dwindles the measurement spacing in the described magnetic orientation technology and adopts described magnetic orientation technological prediction to obtain the second prediction locus of described well in operation;

The curvature acquiring unit, be configured to according to the shaft bottom of described well in operation to obtain described well in operation in the curvature at described second distance place to the second prediction locus of described well in operation and radius of safety and well track design proportion constant with reference to the distance of well the second minimum distance correspondence position, described well in operation;

Determining means is configured to determine according to described curvature whether described well in operation can carry out around the barrier operation.

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