CN105317375B - Horizontal well is inducted into Target process and device - Google Patents
Horizontal well is inducted into Target process and device Download PDFInfo
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- CN105317375B CN105317375B CN201510666097.4A CN201510666097A CN105317375B CN 105317375 B CN105317375 B CN 105317375B CN 201510666097 A CN201510666097 A CN 201510666097A CN 105317375 B CN105317375 B CN 105317375B
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- 238000005553 drilling Methods 0.000 claims abstract description 69
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- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims description 3
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/046—Directional drilling horizontal drilling
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Abstract
Target process and device are inducted into the invention discloses a kind of horizontal well.Methods described includes：Based on Depth Domain geological model of oil accumulation and horizontal well path, obtain the well trajectory parameters such as predetermined depth of target well reference lamina before including boring, enter the predicted value of target spot depth；The real-time with data are bored of current flag layer is obtained, according to the real drilling depth for determining the current flag layer with brill data in real time；Calculate the error amount of the real drilling depth and predetermined depth of current flag layer in the well trajectory parameters of the current flag layer；When the error amount is more than predetermined threshold value, the real drilling depth based on current flag layer adjusts the Depth Domain geological model of oil accumulation；Based on the Depth Domain geological model of oil accumulation after the adjustment, amendment does not bore the well trajectory parameters of the target well reference lamina reached, enters the predicted value of target spot depth.Horizontal well of the present invention is inducted into Target process and device, and it can guide horizontal well drilling trajectory accurately to enter target.
Description
Technical field
The present invention relates to a kind of horizontal well geology track guiding technique, more particularly to a kind of horizontal well be inducted into Target process and
Device.
Background technology
Horizontal well geology tracking guiding technique is primarily referred to as：During the horizontal well site operation, according to oil reservoir before boring
Matter achievement in research, with reference to the various geological informations captured during real bore, it is correct judge underground drilled strata lithology, construction,
The geologic features such as off-take target spatial situation.
As shown in figure 1, horizontal well geology tracking guiding is broadly divided into two stages, i.e. inclination section and horizontal segment.Wherein make
The core missions that oblique section geology tracking is oriented to are to ensure that drilled wellbore trajectories are accurate to up to target spot location A, realize and accurately enter target.Institute
Stating geologic feature can design for horizontal well path and provide required geologic parameter with track adjustment is bored, so as to guide drilling trajectory
Accurately enter target, it is ensured that horizontal segment is crept into oil reservoir.
At present, found during the geology tracking of multiple wells, mainly due to factors such as geologic information error, formation variations
Cause the design profile in horizontal well path generally inconsistent with real brill section.When design profile and inconsistent real brill section,
Horizontal well path will deviate target zone, influence development effectiveness.Especially for horizontal well targets thickness degree generally below 8 meters
Thin layer horizontal well, slightly deviation, horizontal well path is likely to deviate target zone, it is impossible to reach oil reservoir.
The content of the invention
Target process and device are inducted into it is an object of the invention to provide a kind of horizontal well, it can guide horizontal well to bore rail in fact
Mark accurately enters target.
The above-mentioned purpose of the present invention can be realized using following technical proposal：
A kind of horizontal well is inducted into Target process, and it includes：Based on Depth Domain geological model of oil accumulation and horizontal well path, obtain
The well trajectory parameters of predetermined depth including the preceding target well reference lamina of brill, the predicted value for entering target spot depth；Obtain current flag layer
It is real-time with boring data, according to described in real time with the real drilling depth for boring data and determining current flag layer；Calculate described current
The error amount of the real drilling depth of reference lamina and predetermined depth of current flag layer in the well trajectory parameters；When the error amount is big
When predetermined threshold value, the real drilling depth based on current flag layer adjusts the Depth Domain geological model of oil accumulation；Based on described
Depth Domain geological model of oil accumulation after adjustment, amendment does not bore the well trajectory parameters of the target well reference lamina reached, enters target spot depth
Predicted value.
In a preferred embodiment, the well trajectory parameters also include：
The hole angle predicted value of target well reference lamina depth location horizontal well path；
Accordingly, the target well mark reached is not bored in the Depth Domain geological model of oil accumulation amendment based on after the adjustment
The well trajectory parameters of layer include：Do not bore the target well mark reached based on the Depth Domain geological model of oil accumulation amendment after the adjustment
The hole angle predicted value of layer.
In a preferred embodiment, when boring the specified sign for reaching target well layer, methods described also includes：
Based on the hole angle of horizontal well path at specified sign layer position, the horizontal well path that reaches is not bored in adjustment
Hole angle.
In a preferred embodiment, the specified sign layer is above the destination layer and positioned at horizontal well path deflecting
K-th reference lamina in segment limit, the span of the K includes：2≤K≤4.
In a preferred embodiment, methods described also includes：
According to described in real time with the landing state for boring data validation drill bit；
When judging the landing state to land normally or in advance, the well of the horizontal well path reached is not bored described in increase
Oblique angle, carries out operating into target when the hole angle matches with stratigraphic dip；
When judging that the landing state lands for delay, based on the Depth Domain geological model of oil accumulation amendment after the adjustment
Currently enter the predicted value of target spot depth, reduce hole angle, carry out operating into target when the hole angle matches with stratigraphic dip.
In a preferred embodiment, the real drilling depth based on current flag layer adjusts the Depth Domain oil reservoir
Geological model, including bring the real drilling depth of current flag layer into velocity field, carry out velocity field rebuilding；Utilize simultaneously after rebuilding
Velocity field enters Mobile state adjustment, the geological model of oil accumulation after being adjusted to the Depth Domain geological model of oil accumulation.
In a preferred embodiment, it is described in real time with brill data including at least one of following：
Sieve residue log data, well logging data, gas survey data.
In a preferred embodiment, according to the real drilling depth for determining the current flag layer with brill data in real time,
Including：
The target well and Reference well are carried out to connect well contrast in real time, to the log of the target well and Reference well
Cycle of sedimentation similarity feature is contrasted, and whether target well is bored up to destination layer according to the results verification of the contrast.
In a preferred embodiment, the span of the predetermined threshold value includes value and is more than or equal to 2 meters.
A kind of horizontal well is inducted into target assembly, and it includes：Prediction module, for based on Depth Domain geological model of oil accumulation and water
Horizontal well track, obtains the well trajectory parameters of predetermined depth of target well reference lamina before including boring, enters the predicted value of target spot depth；It is real
Drilling depth determining module, for obtain current flag layer it is real-time with bore data, according to it is described in real time with bore data determine described in
The real drilling depth of current flag layer；Model adjusting module, real drilling depth and the well rail for calculating the current flag layer
The error amount of predetermined depth of current flag layer in mark parameter；When the error amount is more than predetermined threshold value, based on described current
The real drilling depth of reference lamina adjusts the Depth Domain geological model of oil accumulation；Correcting module, for based on the depth after the adjustment
Domain geological model of oil accumulation, amendment does not bore the well trajectory parameters of the target well reference lamina reached, enters the predicted value of target spot depth.
The features and advantages of the invention are：The method that horizontal well of the present invention is inducted into target, by being drilled entirely
Cheng Zhong, it is real-time with the real drilling depth of brill data determination according to what is obtained, and carry out real-time percentage regulation domain according to the real drilling depth
Geological model of oil accumulation and amendment horizontal well path so that the predicted value for entering target spot depth is constantly approached and actually enters target spot depth position
Put, it is thus possible to guide horizontal well drilling trajectory accurately to enter target.
Brief description of the drawings
Fig. 1 is a kind of structural representation of horizontal well；
Fig. 2 is the flow chart that a kind of horizontal well is inducted into Target process in the embodiment of the present invention；
Fig. 3 is a kind of horizontal well reference lamina distribution map in the embodiment of the present invention；
Fig. 4 is the logic chart that a kind of horizontal well is inducted into target in the embodiment of the present invention；
Fig. 5 is that horizontal well reaches the real-time section of Depth Domain reservoir model and depth after F11 to boring before boring in the embodiment of the present invention
Degree, hole angle situation of change figure；
Fig. 6 is to bore in the embodiment of the present invention to reach the real-time section of Depth Domain reservoir model after F14；
Fig. 7 is the schematic diagram that a kind of horizontal well is inducted into target assembly in the embodiment of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, technical scheme is elaborated, it should be understood that these realities
Example is applied to be only illustrative of the invention and is not intended to limit the scope of the invention, after the present invention has been read, people in the art
Modification of the member to the various equivalent form of values of the present invention is each fallen within the application appended claims limited range.
The present invention provides the method and device that a kind of horizontal well is inducted into target, and it can guide horizontal well drilling trajectory accurate
Enter target.
Referring to Fig. 2, being inducted into the flow chart of Target process for a kind of horizontal well in the embodiment of the present invention.The horizontal well draws
Target process is imported to may include steps of.
Step S10：Based on Depth Domain geological model of oil accumulation and horizontal well path, target well reference lamina before including boring is obtained
The well trajectory parameters of predetermined depth, the predicted value for entering target spot depth.
Step S12：Obtain the real-time with boring data of current flag layer, according to it is described in real time with bore data determine it is described current
The real drilling depth of reference lamina.
Step S14：Calculate the real drilling depth of current flag layer with the well trajectory parameters current flag layer it is pre-
The error amount of depth measurement degree；When the error amount is more than predetermined threshold value, the real drilling depth based on current flag layer adjusts institute
State Depth Domain geological model of oil accumulation.
Step S16：Based on the Depth Domain geological model of oil accumulation after the adjustment, the target well reference lamina reached is not bored in amendment
Well trajectory parameters, enter the predicted value of target spot depth.
In the present embodiment, before Horizontal Well Drilling, it is possible to use Depth Domain reservoir geological modeling method sets up Depth Domain
Geological model of oil accumulation.The Depth Domain geological model of oil accumulation set up before Horizontal Well Drilling its mainly include：In seismic interpretation
Tomography, layer position, the buried depth of each set rock stratum, based on Seismic Reservoir inverting achievement for boring well-log information acquisition etc..Wherein, seismic data
Usually require to carry out velocity analysis in explanation, so that depth section and structural map are drawn in follow-up expansion, carry out the works such as time and depth transfer
Make.The velocity analysis mainly uses the seismic data and speed data in collection and processing procedure, and combines drilling well, well logging
Etc. data, comprehensive analysis calculates spread speed of the seismic wave in subterranean strata, and then calculates burying for underground Ge Tao rock stratum
Depth.
In the present embodiment, referring to Fig. 1, before Horizontal Well Drilling, it is possible to use provided in terms of drilling well, earthquake, well logging
Material carries out reservoir geology fine description, predicts wellbore trajectory geologic section, calculates kickoff point (KOP) Z to target spot A different lithologies section
The geologic parameters such as track depth, target well mark layer depth, off-take target (i.e. oil reservoir) top surface, the buried depth of bottom surface.
In the present embodiment, the reference lamina can have obvious characteristic can be as Strata Comparison mark for one layer or one group
Rock stratum.Specifically, the reference lamina can be stablized, have a very wide distribution, be easy in obvious, layer position with contained fossil and lithologic character
The characteristics of discriminating.
In the present embodiment, can be by using real-time measurement skill along in the horizontal well path drilling process
Art is obtained in real time with brill data, and carries out Real-Time Evaluation with geologic parameter is bored to drilled strata, so as to obtain target well
Reference lamina reality drilling depth.The Real-time Measuring Technique mainly includes MWD (i.e. with brill deviational survey), LWD (formation evaluation), with brill well logging
Or FEMWD (formation evaluation measurement-while-drilling system).
Wherein, the measurement-while-drilling system can be by downhole sensor package, data transfer or recorded downhole device and ground
Detection process equipment is constituted.The While drilling system is applied the sensor against drill bit top and joined to measure drilling parameter with stratum
Number.The real-time data transmission measured during drilling well leads ground.MWD can typically measure hole deviation, orientation and tool-face direction.LWD is removed
It is above-mentioned outer, can be with measured resistivity, natural GAMA, the formation parameter such as lithology and density logging, neutron, sound wave.In addition, also can use drilling tool
Vibration Analysis Technology instructs directional drilling.The basis that horizontal well is successfully crept into is LWD data and MWD bearing datas.LWD tool
Offer can evaluate the information of well drilled strata.
In the present embodiment, the real drilling depth based on current flag layer adjusts the Depth Domain reservoir geology mould
Type, specifically can participate in velocity field rebuilding by the real drilling depth of current flag layer, while using the velocity field after updating to oil
Hide geological model and enter Mobile state adjustment, the geological model of oil accumulation after being updated.
In one embodiment, it is described in real time with bore data can include it is at least one of following：Sieve residue log number
According to, well logging data, gas survey data.
In the present embodiment, the target well and Reference well are carried out connecting well contrast in real time, to the target well and ginseng
Contrasted according to the cycle of sedimentation similarity feature of the log of well, target well is according to the results verification of the contrast
No bore reaches destination layer.
The log of horizontal well can be included in the well logging.Based on described bent with the well logging bored in data in real time
Line, target well Reference well adjacent thereto is carried out to connect well contrast in real time, by by the survey of the target well and Reference well
The cycle similarity feature of well curve is contrasted, and can confirm that whether the target well is bored up to destination layer.General, work as drill bit
Obvious change is produced when boring chance reference lamina, between the cycle similarity feature meeting of its log and non-reference lamina.Pass through ginseng
According to the log of known offset well, specifically, being contrasted by both cycle similarity features, the target well can confirm that
Whether brill reaches destination layer.In addition, by analyzing the data in the sieve residue log, well logging landwaste is described, pass through contrast
Whether the characteristic of adjacent well reference lamina landwaste, clear and definite can bore chance reference lamina.
In one embodiment, the span of the predetermined threshold value includes value and is more than or equal to 2 meters.When the current mark
When the error amount of predetermined depth of current flag layer is more than 2 meters in real drilling depth and the well trajectory parameters of will layer, it is necessary to
Real-time percentage regulation domain geological model of oil accumulation is carried out, the mark layer depth reached will not be bored and target spot depth is adjusted accordingly.Certainly,
For different Oil Reservoir Types, the concrete numerical value scope of its error can also adapt to adjustment.For example it is thicker for destination layer
Oil reservoir for, the error amount can suitably be increased；For example for the extremely thin oil reservoir of destination layer, it can also control
In 2 meters and following scope, the application does not make specific limit herein.
In one embodiment, the well trajectory parameters also include：Target well reference lamina depth location horizontal well path
Hole angle predicted value；Accordingly, the mesh reached is not bored in the Depth Domain geological model of oil accumulation amendment based on after the adjustment
The well trajectory parameters of mark well reference lamina include：Do not bore the mesh reached based on the Depth Domain geological model of oil accumulation amendment after the adjustment
Mark the hole angle predicted value of well reference lamina.
In one embodiment, when boring the specified sign for reaching destination layer layer, methods described also includes：It is based on
The hole angle of the horizontal well path reached is not bored in the hole angle adjustment of horizontal well path at the specified sign layer position.
In the present embodiment, the specified sign layer can be several reference laminas above close destination layer, its
It can be located in hole deviation section depth bounds.Since being bored the chance specified sign layer, according to data are bored, adjustment, which is not bored, to be reached in real time
The hole angle of the horizontal well path arrived, it is consistent with stratigraphic dip in the hole angle for entering target spot to ensure.
In a specific embodiment, the specified sign layer is above the destination layer and positioned at horizontal well path
K-th reference lamina in the range of inclination section, the span of the K includes：2≤K≤4.
Referring to Fig. 3, in the present embodiment, specified sign layer above the destination layer from close destination layer to
Upper is respectively the first reference lamina F1, the second reference lamina F2, the 3rd reference lamina F3, the 4th reference lamina F4.It can select described during selection
Second reference lamina F2 one into the 4th reference lamina F4 or these., can basis since being bored the chance specified sign layer
In real time with data are bored, the hole angle of the horizontal well path reached is not bored in adjustment, to ensure with stratum to incline in the hole angle for entering target spot
Angle is consistent.
If only choosing the first reference lamina F1, then the stratum reached is bored with brill data and drill bit are actual in real time due to described
Between have the regular hour poor, it is likely that do not receive also and described data or do not have enough time also being adjusted it with brill in real time
Before, drill bit has had deviated from target spot.In addition, shown according to experiment experience after circulation have adjusted 3 times or so, substantially drill bit
Target can accurately be entered.When reference lamina is more than 4, the raising for entering target precision can't bring any influence to increase number on the contrary
According to treating capacity.
In one embodiment, methods described can also include：According to it is described in real time with bore data validation drill bit
Land state.
When judging the landing state to land normally or in advance, the well of the horizontal well path reached is not bored described in increase
Oblique angle, carries out operating into target when the hole angle matches with stratigraphic dip.
When judging that the landing state lands for delay, based on the Depth Domain geological model of oil accumulation amendment after the adjustment
Currently enter the predicted value of target spot depth, reduce hole angle, carry out operating into target when the hole angle matches with stratigraphic dip.
In one embodiment, it is described to be included with the landing state for boring data validation drill bit in real time according to described：
Based on Depth Domain geological model of oil accumulation and horizontal well path, the predicted value of target well landing point depth before boring is obtained.According to described
In real time with brill data acquisition landing point A depth；When the landing point A depth is less than the predicted value, the landing shape is judged
State is to land in advance；When the landing point A depth is more than the predicted value, judge that the landing state lands for delay.
The method that horizontal well of the present invention is inducted into target, by whole drilling process, according to obtain it is real-time with
Bore data and determine real drilling depth, and real-time percentage regulation domain geological model of oil accumulation and amendment level are carried out according to the real drilling depth
Well track so that the predicted value for entering target spot depth is constantly approached and actually enters target spot depth location, it is thus possible to guide horizontal well real
Bore track and accurately enter target.
Fig. 4 to Fig. 6 is referred to, being inducted into Target process using horizontal well of the present invention is exemplified below.
1) Depth Domain geological model of oil accumulation is set up first with Depth Domain reservoir geological modeling method.Then in the model
On the basis of, obtain three reference laminas and the depth for entering target spot A on the well course bearing of design level well.The reference lamina difference
For：FⅠ1、FⅠ3、FⅠ4.The specific depth of each reference lamina, see the prediction before drilling data portion of the first row shown in table 1
Point.
2) before Horizontal Well Drilling probes into target, contrasted by the well reference lamina that connects in real time of positive horizontal well drilling and surrounding offset well,
The real drilling depth of each reference lamina is progressively confirmed from top to bottom.(the real of the Oxford gray of table 1 bores data), marks in the drill-through F I 1 of the horizontal well
(equivalent to boring before reaching F I 3) after will layer, by specify that the reference lamina top surfaces of F I 1 bore height above sea level depth in fact with brill data in real time
For -1358 meters, there is larger depth error in its -1361 meter with prediction before drilling.
3) it is above-mentioned on the basis of horizontal well reference lamina prediction before drilling depth and real drilling depth error analysis, by reference lamina F I
1 real drilling depth participates in velocity field rebuilding, while enter Mobile state adjustment to geological model of oil accumulation using the velocity field after renewal,
Geological model of oil accumulation after being updated.
4) using the geological model of oil accumulation after updating, to the reference lamina of the lower sections of F I 1：That is F I 3, F I 4 depth and target is entered
Point height above sea level depth is predicted again, as shown in the light grey data of the secondary series of table 1.
5) with the probing of horizontal well, continue bore reach lower section F I 3, the reference laminas of F I 4, F I 3, F I 4 mark layer depth confirm and
Enter the basic procedure of target spot depth dynamic prediction, it is consistent with above-mentioned operating process 2), 3), 4).
6) bore up to after last reference lamina F I 4 above horizontal well landing layer (brill is reached before target spot A), based on newest
The geological model of oil accumulation of one wheel, the height above sea level depth predicted into target spot is -1415.2 meters.
7) target spot depth is entered according to above-mentioned prediction, nearby stratigraphic dip is consistent with entering target spot for adjustment hole angle in time,
Simultaneously by analyzing with geologic assessment data (including sieve residue log, well logging, gas survey data etc.) are bored, it is confirmed whether to bore and meets oil
Layer and normal landing.
8) by finishing drilling analysis, the target actual grade that enters of the well is -1415.5 meters, is predicted with above-mentioned the latest round of
Enter -1415.2 meters of target spot depth to compare, it is only 0.3 meter to enter target depth error, basic guarantee accurately enters target.
Table 1
Referring to Fig. 7, being inducted into target assembly 100 present invention also offers a kind of horizontal well, it includes：Prediction module 10,
Real drilling depth determining module 12, real drilling depth determining module 12, model adjusting module 14, correcting module 16.
The prediction module 10, for based on Depth Domain geological model of oil accumulation and horizontal well path, acquisition to include mesh before boring
Mark the well trajectory parameters of predetermined depth of well reference lamina, enter the predicted value of target spot depth.
The real drilling depth determining module 12, for obtaining the real-time with data are bored of current flag layer, according to described real-time
The real drilling depth of the current flag layer is determined with brill data.
In the model adjusting module 14, the real drilling depth and the well trajectory parameters for calculating the current flag layer
The error amount of predetermined depth of current flag layer；When the error amount is more than predetermined threshold value, based on current flag layer
Real drilling depth adjusts the Depth Domain geological model of oil accumulation.
The correcting module 16, for based on the Depth Domain geological model of oil accumulation after the adjustment, amendment not to bore what is reached
The well trajectory parameters of target well reference lamina, the predicted value for entering target spot depth.
Horizontal well of the present invention is inducted into the device of target, by whole drilling process, according to obtain it is real-time with
Bore data and determine real drilling depth, and real-time percentage regulation domain geological model of oil accumulation and amendment level are carried out according to the real drilling depth
Well track so that the predicted value for entering target spot depth is constantly approached and actually enters target spot depth location, it is thus possible to guide horizontal well real
Bore track and accurately enter target.
Each above-mentioned embodiment in this specification is described by the way of progressive, identical similar between each embodiment
Part is cross-referenced, and what each embodiment was stressed is and other embodiment difference.It is real particularly with device
Apply for example, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is referring to embodiment of the method
Part illustrates.
The foregoing is only several embodiments of the present invention, although disclosed herein embodiment as above, it is but described
Content is only to facilitate the embodiment for understanding the present invention and using, is not intended to limit the present invention.Belonging to any present invention
Those skilled in the art, do not depart from disclosed herein spirit and scope on the premise of, can be in embodiment
Make any modification and change, but the scope of patent protection of the present invention in form and in details, still must be with appended claims
The scope defined is defined.
Claims (10)
1. a kind of horizontal well is inducted into Target process, it is characterised in that including：
Based on Depth Domain geological model of oil accumulation and horizontal well path, the well of predetermined depth of target well reference lamina before including boring is obtained
Trajectory parameters, the predicted value for entering target spot depth；
The real-time with data are bored of current flag layer is obtained, determines that the real of current flag layer is bored with brill data in real time according to described
Depth；
Calculate the error of the real drilling depth and predetermined depth of current flag layer in the well trajectory parameters of the current flag layer
Value；When the error amount is more than predetermined threshold value, the real drilling depth based on current flag layer adjusts the Depth Domain oil reservoir
Geological model；
Based on the Depth Domain geological model of oil accumulation after the adjustment, the well track ginseng of the target well reference lamina reached is not bored in amendment
Number, the predicted value for entering target spot depth.
2. the method as described in claim 1, it is characterised in that the well trajectory parameters also include：
The hole angle predicted value of target well reference lamina depth location horizontal well path；
Accordingly, the target well reference lamina that reaches is not bored in the Depth Domain geological model of oil accumulation amendment based on after the adjustment
Well trajectory parameters include：Do not bore the target well reference lamina that reaches based on the Depth Domain geological model of oil accumulation amendment after the adjustment
Hole angle predicted value.
3. method as claimed in claim 2, it is characterised in that described when boring the specified sign for reaching target well layer
Method also includes：
Based on the hole angle of horizontal well path at specified sign layer position, the hole deviation of the horizontal well path reached is not bored in adjustment
Angle.
4. method as claimed in claim 3, it is characterised in that the specified sign layer is above the destination layer and positioned at water
K-th reference lamina in the range of the inclination section of horizontal well track, the span of the K includes：2≤K≤4.
5. method as claimed in claim 2, it is characterised in that methods described also includes：
According to described in real time with the landing state for boring data validation drill bit；
When judging the landing state to land normally or in advance, the hole deviation of the horizontal well path reached is not bored described in increase
Angle, carries out operating into target when the hole angle matches with stratigraphic dip；
It is current based on the Depth Domain geological model of oil accumulation amendment after the adjustment when judging that the landing state lands for delay
Enter the predicted value of target spot depth, reduce hole angle, carry out operating into target when the hole angle matches with stratigraphic dip.
6. the method as described in claim 1, it is characterised in that the real drilling depth based on current flag layer adjusts institute
Depth Domain geological model of oil accumulation is stated, including brings the real drilling depth of current flag layer into velocity field, velocity field rebuilding is carried out；Simultaneously
Enter Mobile state adjustment, the reservoir geology mould after being adjusted to the Depth Domain geological model of oil accumulation using the velocity field after reconstruction
Type.
7. the method as described in claim 1, it is characterised in that described in real time with brill data including at least one of following：
Sieve residue log data, well logging data, gas survey data.
8. method as claimed in claim 7, it is characterised in that determine the current flag layer with brill data in real time according to described
Real drilling depth, including：
The target well and Reference well are carried out to connect well contrast in real time, to the deposition of the target well and the log of Reference well
Cycle similarity feature is contrasted, and whether target well is bored up to destination layer according to the results verification of the contrast.
9. the method as described in claim 1, it is characterised in that the span of the predetermined threshold value includes value and is more than or equal to 2
Rice.
10. a kind of horizontal well is inducted into target assembly, it is characterised in that it includes：
Prediction module, for based on Depth Domain geological model of oil accumulation and horizontal well path, acquisition to include target well reference lamina before boring
Predetermined depth well trajectory parameters, enter the predicted value of target spot depth；
Real drilling depth determining module, for obtaining the real-time with data are bored of current flag layer, according to described true with data are bored in real time
The real drilling depth of the fixed current flag layer；
Model adjusting module, real drilling depth and current flag layer in the well trajectory parameters for calculating the current flag layer
Predetermined depth error amount；When the error amount is more than predetermined threshold value, the real drilling depth based on current flag layer is adjusted
The whole Depth Domain geological model of oil accumulation；
Correcting module, for based on the Depth Domain geological model of oil accumulation after the adjustment, the target well mark reached not to be bored in amendment
The well trajectory parameters of layer, the predicted value for entering target spot depth.
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| NL2028480A (en) * | 2020-06-22 | 2021-09-16 | Univ Yangtze | Stratum dynamic correction method of guidance while drilling |
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