CN105317375A - Target guiding and entering method and device for horizontal well - Google Patents
Target guiding and entering method and device for horizontal well Download PDFInfo
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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
The invention discloses a target guiding and entering method and device for a horizontal well. The method comprises the following steps: acquiring well track parameters including the prediction depth of a marker zone of a target well before drilling, and the predication value of the depth of a target-entering point according to a geological model of a reservoir in a depth domain and a horizontal well track; acquiring the real-time LWD (Logging While Drilling) data of the current marker zone, and determining the actual drilling depth of the current marker zone according to the real-time LWD data; calculating the error value between the actual drilling depth of the current marker zone and the prediction depth, in the well track parameters, of the current marker zone; if the error value is more than a preset threshold, adjusting the geological model of the reservoir in the depth domain according to the actual drilling depth of the current marker zone; modifying the well track parameters of the target well marker zone without being reached in drilling, and the prediction value of the target-entering point depth according to the adjusted geological model of the reservoir in the depth domain. According to the method and the device, the actual drilling track of the horizontal well can be guided to enable a target to accurately enter.
Description
Technical field
The present invention relates to a kind of horizontal well geology and follow the tracks of guiding technique, particularly a kind of horizontal well is inducted into Target process and device.
Background technology
Horizontal well geology is followed the tracks of guiding technique and is mainly referred to: in horizontal well site operation process, according to reservoir geology achievement in research before brill, in conjunction with the various geological informations captured in real drill-through journey, correctly judge the geologic features such as underground drilled strata lithology, structure, off-take target spatial situation.
As shown in Figure 1, horizontal well geology is followed the tracks of to lead and is mainly divided into two stages, i.e. inclination section and horizontal segment.Wherein inclination section geology follows the tracks of the core missions of guiding is guarantee that drilled wellbore trajectories accurately arrives target spot A position, realizes accurately entering target.Described geologic feature can design for horizontal well path and provide required geologic parameter with the adjustment of brill track, thus guides drilling trajectory accurately to enter target, guarantees that horizontal segment creeps in oil reservoir.
At present, find in the geology tracing process of Duo Koujing, cause the design profile in horizontal well path usually to bore section with reality mainly due to factors such as geologic information error, formation variation inconsistent.When design profile with real bore section inconsistent time, horizontal well path will depart from target zone, affects development effectiveness.Particularly for the pellicular water horizontal well of horizontal well targets layer thickness usually below 8 meters, slightly deviation, horizontal well path probably departs from target zone, cannot reach oil reservoir.
Summary of the invention
The object of this invention is to provide a kind of horizontal well and be inducted into Target process and device, it can guide horizontal well drilling trajectory accurately to enter target.
Above-mentioned purpose of the present invention can adopt following technical proposal to realize:
A kind of horizontal well is inducted into Target process, and it comprises: based on Depth Domain geological model of oil accumulation and horizontal well path, obtains the well trajectory parameters comprising the predetermined depth boring front target well reference lamina, the predicted value entering the target spot degree of depth; Obtain the real-time with brill data of current flag layer, according to the described real drilling depth determining described current flag layer in real time with brill data; Calculate the error amount of predetermined depth of current flag layer in the real drilling depth of described current flag layer and described well trajectory parameters; When described error amount is greater than predetermined threshold value, the real drilling depth based on described current flag layer adjusts described Depth Domain geological model of oil accumulation; Based on the Depth Domain geological model of oil accumulation after described adjustment, revise and do not bore the well trajectory parameters of the target well reference lamina reached, enter the predicted value of the target spot degree of depth.
In a preferred embodiment, described well trajectory parameters also comprises:
The hole angle predicted value of target well reference lamina depth location horizontal well path;
Accordingly, the described well trajectory parameters not boring the target well reference lamina reached based on the Depth Domain geological model of oil accumulation correction after described adjustment comprises: the hole angle predicted value of not boring the target well reference lamina reached based on the Depth Domain geological model of oil accumulation correction after described adjustment.
In a preferred embodiment, when brill reaches the specified sign layer of described target well, described method also comprises:
Based on the hole angle of described specified sign layer position horizontal well path, the hole angle of the horizontal well path reached is not bored in adjustment.
In a preferred embodiment, described specified sign layer is above described destination layer and is positioned at K reference lamina of horizontal well path inclination section scope, and the span of described K comprises: 2≤K≤4.
In a preferred embodiment, described method also comprises:
According to described in real time with the landing state boring data validation drill bit;
When judge described landing state as normally or land in advance time, do not bore the hole angle of the horizontal well path reached described in increase, carry out when described hole angle and stratigraphic dip match operating into target;
When judging described landing state as postponing to land, based on the Depth Domain geological model of oil accumulation correction after described adjustment current enter the predicted value of the target spot degree of depth, reduce hole angle, carry out when described hole angle and stratigraphic dip match operating into target.
In a preferred embodiment, the described real drilling depth based on described current flag layer adjusts described Depth Domain geological model of oil accumulation, comprises and brings the real drilling depth of current flag layer into velocity field, carry out velocity field rebuilding; Utilize the velocity field after rebuilding to carry out dynamic conditioning to described Depth Domain geological model of oil accumulation simultaneously, obtain the geological model of oil accumulation after adjustment.
In a preferred embodiment, described in real time with bore data comprise following at least one:
Sieve residue log data, well logging during data, gas survey data.
In a preferred embodiment, according to the described real drilling depth determining described current flag layer in real time with brill data, comprising:
Described target well and Reference well are connected well in real time contrast, contrast the cycle of sedimentation similarity feature of the log of described target well and Reference well, according to the results verification of described contrast, whether target well bores and reaches destination layer.
In a preferred embodiment, the span of described predetermined threshold value comprises value and is more than or equal to 2 meters.
A kind of horizontal well is inducted into target assembly, and it comprises: prediction module, for based on Depth Domain geological model of oil accumulation and horizontal well path, obtains the well trajectory parameters comprising the predetermined depth boring front target well reference lamina, the predicted value entering the target spot degree of depth; Real drilling depth determination module, for obtaining the real-time with brill data of current flag layer, according to the described real drilling depth determining described current flag layer in real time with brill data; Model adjusting module, for calculating the error amount of predetermined depth of current flag layer in the real drilling depth of described current flag layer and described well trajectory parameters; When described error amount is greater than predetermined threshold value, the real drilling depth based on described current flag layer adjusts described Depth Domain geological model of oil accumulation; Correcting module, for based on the Depth Domain geological model of oil accumulation after described adjustment, revises and does not bore the well trajectory parameters of the target well reference lamina reached, enters the predicted value of the target spot degree of depth.
The features and advantages of the invention are: horizontal well of the present invention is inducted into the method for target, by in whole drilling process, real drilling depth is determined with brill data according to the real-time of acquisition, and carry out real-time percentage regulation territory geological model of oil accumulation according to described real drilling depth and revise horizontal well path, make the predicted value into the target spot degree of depth constantly approach actual enter target spot depth location, horizontal well drilling trajectory thus can be guided accurately to enter target.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of horizontal well;
Fig. 2 is the flow chart that in the embodiment of the present invention, a kind of horizontal well is inducted into Target process;
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 in the embodiment of the present invention, a kind of horizontal well is inducted into target;
Fig. 5 is that in the embodiment of the present invention, horizontal well reaches the real-time section of Depth Domain reservoir model and the degree of depth, hole angle situation of change figure after F11 by before boring to boring;
Fig. 6 bores 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 in the embodiment of the present invention, a kind of horizontal well is inducted into target assembly.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is elaborated, these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen in the application's claims limited range.
The invention provides method and device that a kind of horizontal well is inducted into target, it can guide horizontal well drilling trajectory accurately to enter target.
Refer to Fig. 2, for horizontal well a kind of in the embodiment of the present invention is inducted into the flow chart of Target process.Described horizontal well is inducted into Target process and can comprises the steps.
Step S10: based on Depth Domain geological model of oil accumulation and horizontal well path, obtains the well trajectory parameters comprising the predetermined depth boring front target well reference lamina, the predicted value entering the target spot degree of depth.
Step S12: obtain the real-time with brill data of current flag layer, according to the described real drilling depth determining described current flag layer in real time with brill data.
Step S14: the error amount calculating predetermined depth of current flag layer in the real drilling depth of described current flag layer and described well trajectory parameters; When described error amount is greater than predetermined threshold value, the real drilling depth based on described current flag layer adjusts described Depth Domain geological model of oil accumulation.
Step S16: based on the Depth Domain geological model of oil accumulation after described adjustment, revises and does not bore the well trajectory parameters of the target well reference lamina reached, enters the predicted value of the target spot degree of depth.
In the present embodiment, before Horizontal Well Drilling, Depth Domain reservoir geological modeling method establishment Depth Domain geological model of oil accumulation can be utilized.The described Depth Domain geological model of oil accumulation set up before Horizontal Well Drilling its mainly comprise: the buried depth of the tomography in seismic interpretation, layer position, each cover rock stratum, based on the Seismic Reservoir inverting achievement etc. of boring well-log information and obtaining.Wherein, usually need in seismic data interpretation to carry out velocity analysis, so that depth section and constructional drawing are drawn in follow-up expansion, carry out the work such as time and depth transfer.Described velocity analysis mainly utilizes seismic data in acquisition and processing process and speed data, and in conjunction with the data such as drilling well, well logging, the spread speed of comprehensive analytical calculation seismic wave in subterranean strata, and then calculate the buried depth of Ge Tao rock stratum, underground.
In the present embodiment, refer to Fig. 1, before Horizontal Well Drilling, the aspect data such as drilling well, earthquake, well logging can be utilized to carry out reservoir geology fine description, dope wellbore trajectory geological section, calculate the geologic parameter such as buried depth of kickoff point (KOP) Z to target spot A different lithology section track depth, the target well reference lamina degree of depth, off-take target (i.e. oil reservoir) end face, bottom surface.
In the present embodiment, described reference lamina can be one deck or one group there is the rock stratum that obvious characteristic can be used as Strata Comparison mark.Concrete, described reference lamina can have contained fossil and lithologic character is obvious, layer position is stablized, the feature of the discriminating that has a very wide distribution, is easy to.
In the present embodiment, along in described horizontal well path drilling process, can obtain in real time with brill data by adopting Real-time Measuring Technique, and with brill geologic parameter, Real-Time Evaluation is carried out to drilled strata, thus the real drilling depth of target well reference lamina can be obtained.Described Real-time Measuring Technique mainly comprises MWD (namely with brill deviational survey), LWD (formation evaluation), with brill well logging or FEMWD (formation evaluation measurement-while-drilling system).
Wherein, described measurement-while-drilling system can be made up of downhole sensor package, data transmission or recorded downhole device and ground detection treatment facility.Described While drilling system application measures drilling parameter and formation parameter near the sensor on drill bit top.The real-time data transmission measured during drilling well leads ground.MWD generally can measure hole deviation, orientation and tool-face direction.LWD except above-mentioned points, can also measured resistivity, natural GAMA, the formation parameters such as lithology and density logging, neutron, sound wave.In addition, also directional drilling can be instructed with Drillstring Vibration Analysis Technique.The basis that horizontal well successfully creeps into is LWD data and MWD bearing data.LWD instrument provides the information evaluating well drilled strata.
In the present embodiment, real drilling depth based on described current flag layer adjusts described Depth Domain geological model of oil accumulation, specifically the real drilling depth of current flag layer can be participated in velocity field rebuilding, utilize the velocity field after upgrading to carry out dynamic conditioning to geological model of oil accumulation simultaneously, obtain the geological model of oil accumulation after upgrading.
In one embodiment, described in real time with bore data can comprise following at least one: sieve residue log data, well logging during data, gas survey data.
In the present embodiment, described target well and Reference well are connected well in real time and contrasts, contrast the cycle of sedimentation similarity feature of the log of described target well and Reference well, according to the results verification of described contrast, whether target well bores and reaches destination layer.
The log of horizontal well can be comprised in described well logging during.Based on described in real time with the log bored in data, described target well Reference well adjacent thereto is connected in real time well contrast, contrasted by the cycle similarity feature of the log by described target well and Reference well, can confirm whether described target well bores and reach destination layer.General, when bit drills meets reference lamina, produce between the cycle similarity feature meeting of its log and non-reference lamina and significantly change.By referring to the log of known offset well, concrete, contrasted by both cycle similarity features, can confirm whether described target well bores and reach destination layer.In addition, by analyzing the data in described sieve residue log, well logging landwaste being described, by the characteristic of contrast adjacent well reference lamina landwaste, clearly whether can boring chance reference lamina.
In one embodiment, the span of described predetermined threshold value comprises value and is more than or equal to 2 meters.When the error amount of predetermined depth of current flag layer in the real drilling depth and described well trajectory parameters of described current flag layer is more than 2 meters, need to carry out real-time percentage regulation territory geological model of oil accumulation, will the reference lamina degree of depth that reaches do not bored and the target spot degree of depth is adjusted accordingly.Certainly, for different Oil Reservoir Types, the concrete number range of its error also can adapt to adjustment.Such as the thicker oil reservoir of destination layer, described error amount suitably can be increased; Such as the thin especially oil reservoir of destination layer, can control in 2 meters and following scope, the application does not do concrete restriction at this yet.
In one embodiment, described well trajectory parameters also comprises: the hole angle predicted value of target well reference lamina depth location horizontal well path; Accordingly, the described well trajectory parameters not boring the target well reference lamina reached based on the Depth Domain geological model of oil accumulation correction after described adjustment comprises: the hole angle predicted value of not boring the target well reference lamina reached based on the Depth Domain geological model of oil accumulation correction after described adjustment.
In one embodiment, when brill reaches the specified sign layer of described destination layer, described method also comprises: the hole angle of the horizontal well path reached is not bored in the hole angle adjustment based on described specified sign layer position horizontal well path.
In the present embodiment, described specified sign layer can for being positioned at the several reference laminas above destination layer, and it can be positioned at hole deviation section depth bounds.From described specified sign layer met by brill, according in real time with brill data, adjust the hole angle not boring the horizontal well path reached, consistent with stratigraphic dip to ensure the hole angle entering target spot.
In a concrete embodiment, described specified sign layer is above described destination layer and is positioned at K reference lamina of horizontal well path inclination section scope, and the span of described K comprises: 2≤K≤4.
Refer to Fig. 3, in the present embodiment, the specified sign layer above described destination layer starts upwards to be respectively the first reference lamina F1, the second reference lamina F2, the 3rd reference lamina F3, the 4th reference lamina F4 near destination layer.Can select when choosing described second reference lamina F2 in the 4th reference lamina F4 or these.From described specified sign layer met by brill, according in real time with brill data, the hole angle not boring the horizontal well path reached can be adjusted, consistent with stratigraphic dip to ensure the hole angle entering target spot.
If only choose described first reference lamina F1, then due to described in real time with boring data and drill bit is actual bores that to have the regular hour between the stratum that reaches poor, probably also do not receive described in real time with brill data or before also not having enough time to adjust, drill bit deviate from into target spot.In addition, experimentally experience shows that, after circulation have adjusted about 3 times, drill bit accurately can enter target substantially.When reference lamina is greater than 4, any impact can't be brought to increase data processing amount on the contrary for the raising entering target precision.
In one embodiment, described method can also comprise: according to described in real time with the landing state boring data validation drill bit.
When judge described landing state as normally or land in advance time, do not bore the hole angle of the horizontal well path reached described in increase, carry out when described hole angle and stratigraphic dip match operating into target.
When judging described landing state as postponing to land, based on the Depth Domain geological model of oil accumulation correction after described adjustment current enter the predicted value of the target spot degree of depth, reduce hole angle, carry out when described hole angle and stratigraphic dip match operating into target.
In one embodiment, describedly can to comprise with the landing state boring data validation drill bit in real time according to described: based on Depth Domain geological model of oil accumulation and horizontal well path, obtain the predicted value of the target well landing point degree of depth before boring.According to described in real time with the brill data acquisition landing point A degree of depth; When the described landing point A degree of depth is less than described predicted value, judge that described landing state is as landing in advance; When the described landing point A degree of depth is greater than described predicted value, judge that described landing state lands as postponing.
Horizontal well of the present invention is inducted into the method for target, by in whole drilling process, real drilling depth is determined with brill data according to the real-time of acquisition, and carry out real-time percentage regulation territory geological model of oil accumulation according to described real drilling depth and revise horizontal well path, make the predicted value into the target spot degree of depth constantly approach actual enter target spot depth location, horizontal well drilling trajectory thus can be guided accurately to enter target.
Refer to Fig. 4 to Fig. 6, apply horizontal well of the present invention and be inducted into Target process and be exemplified below.
1) Depth Domain reservoir geological modeling method establishment Depth Domain geological model of oil accumulation is first utilized.Then on the basis of this model, three reference laminas and the degree of depth entering target spot A on the well course bearing of acquisition design level well.Described reference lamina is respectively: F I 1, F I 3, F I 4.The degree of depth that each reference lamina described is concrete, can consult the prediction before drilling data division of the first row shown in table 1.
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, progressively confirm the real drilling depth of each reference lamina from top to bottom.(reality of table 1 Oxford gray bores data), after this horizontal well drill-through F I 1 reference lamina (be equivalent to brill reach F I 3 before), by in real time specify that the real height above sea level degree of depth of boring of F I 1 reference lamina end face is-1358 meters with brill data ,-1361 meters of itself and prediction before drilling exist larger depth error.
3) above-mentioned on the basis of the horizontal well reference lamina prediction before drilling degree of depth and real drilling depth error analysis, the real drilling depth of reference lamina F I 1 is participated in velocity field rebuilding, utilize the velocity field after upgrading to carry out dynamic conditioning to geological model of oil accumulation simultaneously, obtain the geological model of oil accumulation after upgrading.
4) utilize the geological model of oil accumulation after upgrading, the reference lamina to below F I 1: namely F I 3, F I 4 the degree of depth and enter the target spot height above sea level degree of depth and again predict, shown in data as light grey in table 1 secondary series.
5) along with the probing of horizontal well, continue brill and reach below F I 3, F I 4 reference lamina, F I 3, the F I 4 reference lamina degree of depth confirm and enter the basic procedure of target spot degree of depth dynamic prediction, with above-mentioned 2), 3), 4) operating process consistent.
6) bore and to reach above horizontal well landing layer after last reference lamina F I 4 (brill reach target spot A before), based on the geological model of oil accumulation of the latest round of, predict that the height above sea level degree of depth into target spot is-1415.2 meters.
7) the target spot degree of depth is entered according to above-mentioned prediction, timely adjust well oblique angle is consistent with entering stratigraphic dip near target spot, simultaneously by analyzing with brill geologic assessment data (comprising sieve residue log, well logging during, gas survey data etc.), being confirmed whether to bore and meeting oil reservoir and normal landing.
8) by finishing drilling analysis, the target actual grade that enters of this well is-1415.5 meters, that predicts with above-mentioned the latest round of enters compared with the target spot degree of depth-1415.2 meters, enters target depth error and is only 0.3 meter, and basic guarantee accurately enters target.
Table 1
Refer to Fig. 7, present invention also offers a kind of horizontal well and be inducted into target assembly 100, it comprises: prediction module 10, real drilling depth determination module 12, real drilling depth determination module 12, model adjusting module 14, correcting module 16.
Described prediction module 10, for based on Depth Domain geological model of oil accumulation and horizontal well path, obtains the well trajectory parameters comprising the predetermined depth boring front target well reference lamina, the predicted value entering the target spot degree of depth.
Described real drilling depth determination module 12, for obtaining the real-time with brill data of current flag layer, according to the described real drilling depth determining described current flag layer in real time with brill data.
Described model adjusting module 14, for calculating the error amount of predetermined depth of current flag layer in the real drilling depth of described current flag layer and described well trajectory parameters; When described error amount is greater than predetermined threshold value, the real drilling depth based on described current flag layer adjusts described Depth Domain geological model of oil accumulation.
Described correcting module 16, for based on the Depth Domain geological model of oil accumulation after described adjustment, revises and does not bore the well trajectory parameters of the target well reference lamina reached, enters the predicted value of the target spot degree of depth.
Horizontal well of the present invention is inducted into the device of target, by in whole drilling process, real drilling depth is determined with brill data according to the real-time of acquisition, and carry out real-time percentage regulation territory geological model of oil accumulation according to described real drilling depth and revise horizontal well path, make the predicted value into the target spot degree of depth constantly approach actual enter target spot depth location, horizontal well drilling trajectory thus can be guided accurately to enter target.
Each embodiment above-mentioned in this manual all adopts the mode of going forward one by one to describe, and between each embodiment, identical similar portion is cross-referenced, and what each embodiment stressed is and other embodiment differences.Especially for device embodiment, because it is substantially similar to embodiment of the method, so description is fairly simple, relevant part illustrates see embodiment of the method part.
The foregoing is only several embodiments of the present invention, although the embodiment disclosed by the present invention as above, the embodiment that described content just adopts for the ease of understanding the present invention, is not intended to limit the present invention.Any those skilled in the art; under the prerequisite not departing from the spirit and scope disclosed by the present invention; any amendment and change can be done on the formal of embodiment and details; but scope of patent protection of the present invention, the scope that still must define with appended claims is as the criterion.
Claims (10)
1. horizontal well is inducted into a Target process, it is characterized in that, comprising:
Based on Depth Domain geological model of oil accumulation and horizontal well path, obtain the well trajectory parameters comprising the predetermined depth boring front target well reference lamina, the predicted value entering the target spot degree of depth;
Obtain the real-time with brill data of current flag layer, according to the described real drilling depth determining described current flag layer in real time with brill data;
Calculate the error amount of predetermined depth of current flag layer in the real drilling depth of described current flag layer and described well trajectory parameters; When described error amount is greater than predetermined threshold value, the real drilling depth based on described current flag layer adjusts described Depth Domain geological model of oil accumulation;
Based on the Depth Domain geological model of oil accumulation after described adjustment, revise and do not bore the well trajectory parameters of the target well reference lamina reached, enter the predicted value of the target spot degree of depth.
2. the method for claim 1, is characterized in that, described well trajectory parameters also comprises:
The hole angle predicted value of target well reference lamina depth location horizontal well path;
Accordingly, the described well trajectory parameters not boring the target well reference lamina reached based on the Depth Domain geological model of oil accumulation correction after described adjustment comprises: the hole angle predicted value of not boring the target well reference lamina reached based on the Depth Domain geological model of oil accumulation correction after described adjustment.
3. method as claimed in claim 2, is characterized in that, when brill reaches the specified sign layer of described target well, described method also comprises:
Based on the hole angle of described specified sign layer position horizontal well path, the hole angle of the horizontal well path reached is not bored in adjustment.
4. method as claimed in claim 3, it is characterized in that, described specified sign layer is above described destination layer and is positioned at K reference lamina of horizontal well path inclination section scope, and the span of described K comprises: 2≤K≤4.
5. method as claimed in claim 2, it is characterized in that, described method also comprises:
According to described in real time with the landing state boring data validation drill bit;
When judge described landing state as normally or land in advance time, do not bore the hole angle of the horizontal well path reached described in increase, carry out when described hole angle and stratigraphic dip match operating into target;
When judging described landing state as postponing to land, based on the Depth Domain geological model of oil accumulation correction after described adjustment current enter the predicted value of the target spot degree of depth, reduce hole angle, carry out when described hole angle and stratigraphic dip match operating into target.
6. the method for claim 1, is characterized in that, the described real drilling depth based on described current flag layer adjusts described Depth Domain geological model of oil accumulation, comprises and brings the real drilling depth of current flag layer into velocity field, carry out velocity field rebuilding; Utilize the velocity field after rebuilding to carry out dynamic conditioning to described Depth Domain geological model of oil accumulation simultaneously, obtain the geological model of oil accumulation after adjustment.
7. the method for claim 1, is characterized in that, described in real time with bore data comprise following at least one:
Sieve residue log data, well logging during data, gas survey data.
8. method as claimed in claim 7, is characterized in that, according to the described real drilling depth determining described current flag layer in real time with brill data, comprising:
Described target well and Reference well are connected well in real time contrast, contrast the cycle of sedimentation similarity feature of the log of described target well and Reference well, according to the results verification of described contrast, whether target well bores and reaches destination layer.
9. the method for claim 1, is characterized in that, the span of described predetermined threshold value comprises value and is more than or equal to 2 meters.
10. horizontal well is inducted into a target assembly, it is characterized in that, it comprises:
Prediction module, for based on Depth Domain geological model of oil accumulation and horizontal well path, obtains the well trajectory parameters comprising the predetermined depth boring front target well reference lamina, the predicted value entering the target spot degree of depth;
Real drilling depth determination module, for obtaining the real-time with brill data of current flag layer, according to the described real drilling depth determining described current flag layer in real time with brill data;
Model adjusting module, for calculating the error amount of predetermined depth of current flag layer in the real drilling depth of described current flag layer and described well trajectory parameters; When described error amount is greater than predetermined threshold value, the real drilling depth based on described current flag layer adjusts described Depth Domain geological model of oil accumulation;
Correcting module, for based on the Depth Domain geological model of oil accumulation after described adjustment, revises and does not bore the well trajectory parameters of the target well reference lamina reached, enters the predicted value of the target spot degree of depth.
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| CN113323587A (en) * | 2021-06-28 | 2021-08-31 | 数皮科技(湖北)有限公司 | Multidimensional horizontal well guiding quantitative method based on drilling, recording and measuring data |
| CN113536574A (en) * | 2021-07-20 | 2021-10-22 | 北京蓝海智信能源技术有限公司 | Geological oriented modeling method, system and computer readable storage medium |
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