CN106979002A - Branch horizontal well predicts the determination method and apparatus of section - Google Patents
Branch horizontal well predicts the determination method and apparatus of section Download PDFInfo
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- CN106979002A CN106979002A CN201710253453.9A CN201710253453A CN106979002A CN 106979002 A CN106979002 A CN 106979002A CN 201710253453 A CN201710253453 A CN 201710253453A CN 106979002 A CN106979002 A CN 106979002A
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- well
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- virtual log
- branch levels
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
Abstract
The application embodiment provides the determination method and apparatus that a kind of branch horizontal well predicts section, wherein, this method comprises the following steps：The well data of multiple drilled wells in the three dimensional seismic data of acquisition target area and target area；According to the well data and three dimensional seismic data of drilled well, the connected graph of multiple branch levels sections is set up in the both sides of main horizontal segment using virtual log；According to the connected graph of multiple branch levels section, determine that branch horizontal well predicts section.Because the program is by using drilled well and three dimensional seismic data, sets up virtual log and obtain the spatial information (such as well depth and core intersection) of virtual log, resettle the vertical connected graph of branch levels section, section is predicted with the branch horizontal well for building three-dimensional.Two dimensional cross-section is used due to that can only build, it is impossible to which characterizing oil reservoir spatial information causes the presence of the technical problem that precision of prediction is poor, data characterization is inaccurate so as to solve existing branch levels prediction section method.
Description
Technical field
The application is related to Reservoir Development technical field, and more particularly to a kind of branch horizontal well predicts the determination method of section
And device.
Background technology
Horizontal well is the important means of current Reservoir Development, and it is typically by expanding oil reservoir drainage area to improve oil
Well production.Wherein, it can further increase drainage area, increase oil well output using branch horizontal well, improve rate of oil production, section
About drilling cost etc..And before deployment branch horizontal well, generally require and first target area is researched and analysed, establish branch's water
Horizontal well predicts section.And then can be by the use of the prediction section as manufacture bases, the deployment for carrying out specific branch horizontal well is applied
Work.Therefore, how to determine that accurate branch horizontal well prediction section is critically important.
The determination method of existing branch levels well profile, often simply builds simply by the drilled well in target area
Vertical two-dimensional prediction profile.This two-dimensional prediction section does not adequately take into account the situation of change of core intersection in region,
The spatial information (such as well depth and core intersection) of oil reservoir in target area can not be symbolized well.Therefore, specific implementation makes
During with this two-dimensional prediction profile, oil reservoirs of horizontal well Drilling ratio is relatively low, and the effect for disposing branch horizontal well is relatively poor.
Therefore, the determination method of existing branch levels well profile is when it is implemented, often have that precision of prediction is poor, data characterization is forbidden
True technical problem.
In view of the above-mentioned problems, not yet proposing effective solution at present.
The content of the invention
The application embodiment provides the determination method and apparatus that a kind of branch horizontal well predicts section, existing to solve
The technical problem that precision of prediction present in method is poor, data characterization is inaccurate.
The application embodiment provides a kind of determination method that branch horizontal well predicts section, including：
The well data of multiple drilled wells in the three dimensional seismic data of acquisition target area and target area；
According to the three dimensional seismic data and the well data of the multiple drilled well, multiple points in main horizontal segment both sides
Multiple virtual logs are set up in each branch levels section in branch horizontal segment, and obtain the well of each virtual log in the multiple virtual log
Depth and core intersection；
According to the well depth and core intersection of the multiple virtual log, each branch levels section in multiple branch levels sections is set up
Connected graph；
According to the connected graph of the multiple branch levels section, determine that branch horizontal well predicts section.
In one embodiment, it is determined that after branch horizontal well prediction section, methods described also includes：
Section is predicted according to the branch horizontal well, the deployment of branch horizontal well is carried out in the target area.
In one embodiment, according to the three dimensional seismic data and the well data of the multiple drilled well, in master
Multiple virtual logs are set up in multiple branch levels section of horizontal segment both sides in each branch levels section, and obtain the multiple virtual
The well depth and core intersection of the virtual log of each in well, including：Set up respectively according to following steps in the multiple branch levels section
Multiple virtual logs, and obtain the well depth and core intersection of each virtual log in the multiple virtual log：
The line of two drilled wells in the multiple drilled well, determines the first virtual log of branch levels section；
According to the well data of the drilled well in the first virtual log preset range, determine first virtual log well depth and
Core intersection；
According to well depth and core intersection, the three dimensional seismic data of first virtual log, the branch levels are determined
The direction of section；
Along the direction of branch levels section, the second virtual log of the branch levels section is determined；
According to the well data of the drilled well in the second virtual log preset range, determine second virtual log well depth and
Core intersection.
In one embodiment, the line of two drilled wells in the multiple drilled well, determines branch levels
First virtual log of section, including：
Using the intersection point of the extended line of the line of two drilled wells of the main horizontal segment homonymy and the main horizontal segment as
The position of first virtual log of the branch levels section；
And/or,
It regard the intersection point of the main the horizontal segment not line of two drilled wells of homonymy and the main horizontal segment as described point
The position of first virtual log of branch horizontal segment.
In one embodiment, the well data of the drilled well according in the first virtual log preset range, it is determined that
The well depth and core intersection of first virtual log, including：
According to the well data of the drilled well in the first virtual log preset range, by interpolation algorithm, it is determined that described
The well depth and core intersection of first virtual log.
In one embodiment, according to well depth and core intersection, the three dimensional seismic data of first virtual log,
The direction of the branch levels section is determined, including：
According to well depth and core intersection, the three dimensional seismic data of first virtual log, the stability of oil reservoir is selected
Reach that the direction of predetermined threshold value is used as the direction of branch levels section.
In one embodiment, according to the well depth and core intersection of the multiple virtual log, in the both sides of main horizontal segment
The connected graph of multiple branch levels sections is set up, including：
According to the well depth of the first virtual log of each branch levels section and core intersection, the in the multiple branch levels section
The well depth and core intersection of two virtual logs, determine the oil reservoir situation of change of the branch levels section region；
According to the oil reservoir situation of change of branch levels section region, the connected graph of the branch levels section is determined.
In one embodiment, in the oil reservoir situation of change according to branch levels section region, it is determined that described
After the connected graph of branch levels section, methods described also includes：
Determine whether the connectedness of the connected graph of the branch levels section reaches preset requirement；
If being not reaching to the preset requirement, the direction of the branch levels section is redefined.
In one embodiment, according to the connected graph of the multiple branch levels section, determine that branch horizontal well prediction is cutd open
Face, including：
According to the connected graph of the multiple branch levels section, three-dimensional section view is set up；
By the well depth and oil reservoir of the first virtual log that each branch levels section is marked in the three-dimensional section view
The well depth and core intersection of thickness, the second virtual log of each described branch levels section, obtain the branch horizontal well prediction and cut open
Face.
Based on identical inventive concept, embodiment further provides the determination that a kind of branch horizontal well predicts section by the application
Device, including：
Acquisition module, for obtaining the three dimensional seismic data of target area and the well money of multiple drilled wells in target area
Material；
First sets up module, for the well data according to the three dimensional seismic data and the multiple drilled well, in master
Multiple virtual logs are set up in multiple branch levels section of horizontal segment both sides in each branch levels section, and obtain the multiple virtual
The well depth and core intersection of the virtual log of each in well；
Second sets up module, for the well depth and core intersection according to the multiple virtual log, sets up multiple branch levels
The connected graph of each branch levels section in section；
Determining module, for the connected graph according to the multiple branch levels section, determines that branch horizontal well predicts section.
In one embodiment, described device also includes：
Deployment module, for predicting section according to the branch horizontal well, branch horizontal well is carried out in the target area
Deployment.
In one embodiment, described first set up module and include：
First determining unit, for the line of two drilled wells in the multiple drilled well, determines branch levels
First virtual log of section；
Second determining unit, for the well data according to the drilled well in the first virtual log preset range, it is determined that described
The well depth and core intersection of first virtual log；
3rd determining unit, for well depth and core intersection, the three dimensional seismic data according to first virtual log,
Determine the direction of the branch levels section；
4th determining unit, for along the direction of branch levels section, determining that the second of the branch levels section is virtual
Well；
5th determining unit, for the well data according to the drilled well in the second virtual log preset range, it is determined that described
The well depth and core intersection of second virtual log.
In the application embodiment, by using drilled well and three dimensional seismic data, set up virtual log and obtain virtual
The spatial information of well, has taken into full account the well depth and core intersection in target area, sets up the connected graph of multiple branch levels sections,
To set up three-dimensional branch horizontal well prediction section, so as to predict that section is relatively comprehensive, accurate by the three-dimensional branch horizontal well
The specific spatial information of oil-yielding stratum really is characterized, with the Drilling ratio for oil reservoir of improving the standard, is solved pre- present in existing method
The inaccurate technical problem of low precision, data characterization is surveyed, having reached can accurately predicted branches horizontal well, guidance deployment point
The technique effect of branch horizontal well.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments described in application, for those of ordinary skill in the art, are not paying the premise of creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the process chart for the determination method that section is predicted according to the branch horizontal well of the application embodiment；
Fig. 2 is the composition structure chart for the determining device that section is predicted according to the branch horizontal well of the application embodiment.
Embodiment
In order that those skilled in the art more fully understand the technical scheme in the application, it is real below in conjunction with the application
The accompanying drawing in example is applied, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described implementation
Example only some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, should all belong to the application protection
Scope.
The determination method that existing branch horizontal well predicts section is analyzed, when it is implemented, usually not fully analyze,
Using the spatial information of specific oil reservoir data, especially oil reservoir in target area, for example, the thickness change situation of oil reservoir, well
It is deep etc..Therefore the spatial information in oil-yielding stratum can not preferably be characterized by setting up the two-dimensional level well prediction section obtained.Cause profit
During oil reservoir horizontal with two-dimensional level well prediction section, Drilling ratio is relatively low, and the effect for disposing branch horizontal well is relatively poor.
Basic reason for producing above mentioned problem, the application analysis can set up virtual log first with the well data of drilled well；Enter
And the spatial information of the oil reservoir in target area can be obtained using virtual log, drilled well and seismic data, it is multiple to set up
The connected graph of branch levels section；Three-dimensional horizontal well prediction section is determined further according to the connected graph of multiple branch levels section.So as to
To predict that section accurately characterizes the spatial information (well depth and core intersection etc.) of oil-yielding stratum using the three-dimensional horizontal well of acquisition.
Therefore, the technical problem that precision of prediction present in existing method is poor, data characterization is inaccurate is solved, having reached can be with calibrated
Really instruct the technique effect of deployment branch horizontal well.
Based on above-mentioned thinking thinking, the application embodiment provides the determination side that a kind of branch horizontal well predicts section
Method.Refer to the process chart of the determination method of Fig. 1 branch horizontal well prediction section.Point that the application embodiment is provided
Branch horizontal well predicts the determination method of section, may comprise steps of (including step 101 to step 104).
Step 101：The well data of multiple drilled wells in the three dimensional seismic data of acquisition target area and target area.
Step 102：According to the three dimensional seismic data and the well data of the multiple drilled well, in main horizontal segment both sides
Multiple branch levels section in set up multiple virtual logs in each branch levels section, and obtain the void of each in the multiple virtual log
Intend the well depth and core intersection of well.
In one embodiment, for the virtual log required for setting up and the spatial information (virtual log of virtual log is obtained
Power shot and core intersection), when it is implemented, according to following steps (S1 to S5) the multiple branch levels can be set up respectively
Multiple virtual logs in section, and then obtain the well depth and core intersection of each virtual log in the multiple virtual log.
S1：The line of two drilled wells in the multiple drilled well, determines the first virtual log of branch levels section.
It is not real in the present embodiment, it is necessary to which explanation is that above-mentioned virtual log is commonly referred to as virtual straight well
Drilled well, i.e., it is a bite straight well that it is assumed at a certain position, and the information data of the straight well, example are obtained by neighbouring drilled well
Such as spatial information：Well depth and core intersection etc..
In one embodiment, can be by the main level during specific implementation in order to determine the position of the first virtual log
The extended line of line of two drilled wells of section homonymy is used as the first of branch levels section with the intersection point of the main horizontal segment
The position of virtual log；Can also be by the intersection point of the main the horizontal segment not line of two drilled wells of homonymy and the main horizontal segment
It is used as the position of the first virtual log of branch levels section.Which kind of specifically chosen mode determines the position of the first virtual log, can
With as the case may be and specific requirement, flexibly selection.
S2：According to the well data of the drilled well in the first virtual log preset range, the well of first virtual log is determined
Depth and core intersection.
In one embodiment, in order to determine the spatial information of the first virtual log, wherein, the spatial information specifically may be used
, specifically can be according in the first virtual log preset range with data such as well depths and core intersection including the first virtual log
The well data of drilled well, by interpolation algorithm, determines the well depth and core intersection of first virtual log.That is, using known
Drilled well data, toward virtual log carry out interpolation calculation, obtain required for virtual log data.For example, positioned at virtual log
The drilled well A and drilled well B at two ends well depth are respectively 900 meters and 800 meters, when it is implemented, can be according to drilled well A well
Deep and drilled well B well depth, by interpolation calculation, the well depth for drawing the virtual log between two mouthfuls of drilled wells at position is
850 meters.It should be noted that this method is main to carry out interpolation calculation according to the data of oil reservoir section, so that it is virtual to obtain first
The data such as the well depth and core intersection of well.When it is implemented, the well spacing of two mouthfuls of drilled wells is generally 70 meters to 100 meters.If will
Other data of virtual log are calculated, or more precisely compute the data of virtual log, or calculate big between drilled well
Virtual log data, when it is implemented, the data of the data combination seismic profile of oil reservoir section can be comprehensively utilized, inserted
It is worth computing, to obtain the data of corresponding virtual log.Certainly, the process of the spatial information of virtual log is obtained, it is specific using corresponding
Algorithm, is realized by the software for working out oil reservoir section.
In the present embodiment, it is necessary to which explanation, the spatial information of virtual log can specifically include the well depth of virtual log
And core intersection, other corresponding data can also be included.In the present embodiment, the sky of virtual log is obtained using interpolation algorithm
Between information, when it is implemented, the information data needed for can also being obtained as the case may be using other algorithms.In this regard, this
Application is not restricted.
S3：According to well depth and core intersection, the three dimensional seismic data of first virtual log, branch's water is determined
The direction of flat section.
In one embodiment, in order to improve the oil recovery effect of branch horizontal well, it is determined that the direction of branch levels section
When, it according to well depth and core intersection, the three dimensional seismic data of first virtual log, can specifically select the stabilization of oil reservoir
Property reach predetermined threshold value direction be used as the branch levels section direction.For example, using the first virtual log as starting point, along just
Dong Fangxiang, due west direction and direct north core intersection all sharp reduce, and change feelings along the core intersection in due south direction
Condition is smaller, and relative stability is preferable.In this case it is considered that reaching default threshold along the stability of due south direction oil reservoir
Value, using due south direction as the branch levels section point to.
S4：Along the direction of branch levels section, the second virtual log of the branch levels section is determined.
In one embodiment, for the position of the second virtual log for determining branch levels section, when it is implemented, can be with
With reference to the location method for determining the first virtual log, along the direction of branch levels section, with reference to seismic data and core intersection change feelings
Condition, selects suitable position as the position of the second virtual log in branch levels section.
S5：According to the well data of the drilled well in the second virtual log preset range, the well of second virtual log is determined
Depth and core intersection.
In one embodiment, in order to determine branch levels section the second virtual log well depth and core intersection, specifically
During implementation, the method that may be referred to determine the well depth and core intersection of the first virtual log, i.e. can be according to second virtual log
The well data of drilled well in preset range, by interpolation algorithm, determines the well depth and core intersection of second virtual log.
Similar step, the application is repeated no more.
Step 103：According to the well depth and core intersection of the multiple virtual log, each point in multiple branch levels sections is set up
The connected graph of branch horizontal segment.
In one embodiment, in order to set up the connected graph of multiple branch levels section in the both sides of main horizontal segment, specifically
During implementation, it can be performed according to following steps (including S1 to S2).
S1：It is thick according to the well depth and oil reservoir of the first virtual log of each branch levels section in the multiple branch levels section
Degree, the well depth and core intersection of the second virtual log, determine the oil reservoir situation of change of the branch levels section region.
S2：According to the oil reservoir situation of change of branch levels section region, the connected graph of branch levels section is determined.
In one embodiment, in order to ensure that the connected graph obtained meets the requirements, and then it can obtain more accurate
Branch horizontal well predicts section, it is determined that after the connected graph of branch levels section, methods described can also be wrapped during specific implementation
Include following steps (including S1 to S2).
S1：Determine whether the connectedness of the connected graph of the branch levels section reaches preset requirement.
S2：If being not reaching to the preset requirement, the direction of the branch levels section is redefined.
In the present embodiment, the connectedness of the connected graph reaches that preset requirement can be specifically each in the circulation figure
Virtual log, the well depth of drilled well have changed the situation of change of the thickness of oil reservoir in connected graph in the range of a limitation.For example, should
The difference of core intersection and the average thickness of oil reservoir in the connected graph at the position of each in connected graph is less than or equal to 60 meters, at this
In the case of kind, it is believed that the connected graph reaches preset requirement, otherwise it is considered that the connected graph of the branch levels section of gained does not have
Have and reach preset requirement, it is necessary to redefine the direction of branch levels section to obtain the company for the branch levels section for reaching preset requirement
Logical figure.
Certainly, above-mentioned cited preset requirement is intended merely to that a kind of schematic of the application embodiment is better described
Illustrate, when it is implemented, whether the connected graph that corresponding preset requirement can be determined as the case may be to detect acquisition is suitable,
Whether need to redefine the direction of branch levels section to obtain more particularly suitable connected graph.
Step 104：According to the connected graph of the multiple branch levels section, determine that branch horizontal well predicts section.
In one embodiment, can be according to described many in order to set up more accurate branch horizontal well prediction section
The connected graph of individual branch levels section, determines that branch horizontal well predicts section.Specific implementation can include following steps, and (S1 is extremely
S2)。
S1：According to the connected graph of the multiple branch levels section, three-dimensional section view is set up.
In the present embodiment, due to having been obtained for spatial information (well depth and the oil reservoir of the virtual log in target area
Thickness), the well depth and core intersection of drilled well, and target area core intersection situation because can be according to each branch
The connected graph of horizontal segment, sets up three-dimensional section view.It should be noted that the three-dimensional section view, is used different from existing method
Two-dimensional cross section can clearly symbolize the spatial informations such as the thickness of target area oil reservoir.Therefore, compared to common two
Position and the correlation circumstance of branch horizontal well can be more accurately predicted in dimension profile.
S2：By the well depth and oil of the first virtual log that each branch levels section is marked in the three-dimensional section view
The well depth and core intersection of thickness degree, the second virtual log of each described branch levels section, obtain the branch horizontal well prediction
Section.
In one embodiment, in order to dispose branch horizontal well in target area, when it is implemented, can be it is determined that dividing
After branch horizontal well prediction section, section is predicted according to the branch horizontal well, branch horizontal well is carried out in the target area
Deployment.Certainly it should be noted that when it is implemented, except using branch horizontal well prediction section deployment branch horizontal well in addition to,
It can also predict that section is further researched and analysed to the oil reservoir situation of target area according to branch horizontal well；Can also be with
Branch horizontal well predict section as reference frame, further designed in target area other corresponding branch horizontal wells or other
Structure etc..For how the branch horizontal well obtained using the application embodiment predicts section, the application is not restricted.
In the embodiment of the present application, compared to existing method, by using drilled well and three dimensional seismic data, set up virtual
Well and the spatial information for obtaining virtual log, have taken into full account the well depth and core intersection in target area, set up multiple branch's water
The connected graph of flat section, and then three-dimensional branch horizontal well prediction section is set up, so as to be predicted by the three-dimensional branch horizontal well
Section compared with comprehensively, symbolize the specific spatial information of oil reservoir in target area exactly, with the Drilling ratio for oil reservoir of improving the standard, solution
Determine the technical problem that precision of prediction present in existing method is poor, data characterization is inaccurate, having reached accurately to refer to
Lead the technique effect of deployment branch horizontal well.
Based on same inventive concept, the determination that a kind of branch horizontal well predicts section is additionally provided in embodiment of the present invention
Device, as described in following embodiment.Because branch horizontal well predicts that the determining device of section solves the principle of problem with dividing
The determination method of branch horizontal well prediction section is similar, therefore the implementation of the determining device of branch horizontal well prediction section may refer to
The implementation of the determination method of branch horizontal well prediction section, repeats part and repeats no more.It is used below, term " unit " or
Person's " module " can realize the combination of the software and/or hardware of predetermined function.Although the device described by following examples is preferable
Ground is realized with software, but hardware, or the realization of the combination of software and hardware is also that may and be contemplated.Refer to figure
The composition structure chart of the determining device of 2 branch horizontal well prediction section, the device can specifically include：Acquisition module 201,
One sets up module 202, second sets up module 203 and determining module 204, and the structure is specifically described below.
Acquisition module 201, specifically can be used for obtain target area three dimensional seismic data and target area in it is multiple complete
The well data of drilling well.
First sets up module 202, specifically can be used for the well according to the three dimensional seismic data and the multiple drilled well
Ophthalmic record, sets up multiple virtual logs, and obtain in multiple branch levels section of main horizontal segment both sides in each branch levels section
The well depth and core intersection of each virtual log in the multiple virtual log.
Second sets up module 203, specifically can be used for well depth and core intersection according to the multiple virtual log, sets up many
The connected graph of each branch levels section in individual branch levels section.
Determining module 204, specifically can be used for the connected graph according to the multiple branch levels section, determines branch horizontal well
Predict section.
In one embodiment, in order to predict that section carries out the deployment of branch horizontal well using the branch horizontal well,
Described device can also specifically include：Deployment module, specifically can be used for predicting section according to the branch horizontal well, described
Target area carries out the deployment of branch horizontal well.
In one embodiment, in order to set up virtual log and obtain the spatial information of virtual log (well depth and oil reservoir are thick
Degree), described first, which sets up module 202, can specifically include：
First determining unit, the line for two drilled wells that specifically can be used in the multiple drilled well, it is determined that
First virtual log of branch levels section；
Second determining unit, specifically can be used for the well data according to the drilled well in the first virtual log preset range,
Determine the well depth and core intersection of first virtual log；
3rd determining unit, specifically can be used for well depth and core intersection according to first virtual log, the three-dimensional
Seismic data, determines the direction of the branch levels section；
4th determining unit, specifically can be used for the direction along branch levels section, determine the branch levels section
Second virtual log；
5th determining unit, specifically can be used for the well data according to the drilled well in the second virtual log preset range,
Determine the well depth and core intersection of second virtual log.
In one embodiment, in order to determine the position of the first virtual log, when it is implemented, above-mentioned first determining unit
It can specifically be performed according to following steps：By the extended line of the line of two drilled wells of the main horizontal segment homonymy and the master
The intersection point of horizontal segment as the branch levels section the first virtual log position；And/or, by the main horizontal segment not homonymy
The intersection point of the line of two drilled wells and the main horizontal segment as the first virtual log of branch levels section position.
In one embodiment, it is specific real in order to obtain the spatial information (well depth and core intersection) of the first virtual log
Shi Shi, the second determining unit can specifically be performed according to following steps：According to the finishing drilling in the first virtual log preset range
The well data of well, by interpolation algorithm, determines the well depth and core intersection of first virtual log.
In one embodiment, in order to determine suitable direction as the branch levels section direction, specific implementation
When, the 3rd determining unit can specifically be performed in following manner：According to the well depth and core intersection of first virtual log, institute
Three dimensional seismic data is stated, the stability of selection oil reservoir reaches that the direction of predetermined threshold value is used as the direction of branch levels section.
In one embodiment, in order to set up the connected graph of multiple branch levels section in the both sides of main horizontal segment, specifically
During implementation, above-mentioned second, which sets up module 203, can specifically include：
First subelement, specifically can be used for the first void according to each branch levels section in the multiple branch levels section
Intend the well depth and core intersection, the well depth and core intersection of the second virtual log of well, determine the branch levels section region
Oil reservoir situation of change；
Second subelement, specifically can be used for the oil reservoir situation of change according to branch levels section region, it is determined that
The connected graph of the branch levels section.
In one embodiment, in order that the connected graph that must be obtained meets the requirements, to improve the branch's water finally obtained
Horizontal well predicts the degree of accuracy of section, when it is implemented, described device can also include：
Whether detection unit, the connectedness for being specifically determined for the connected graph of the branch levels section reaches default want
Ask；
Unit is corrected, the connected graph that specifically can be used in above-mentioned branch levels section is not reaching to the feelings of the preset requirement
Under condition, the direction of the branch levels section is redefined.
In one embodiment, in order to set up more reliable, accurate branch horizontal well prediction section, it is embodied
When, above-mentioned determining module 204 can specifically include：
Unit is set up, specifically can be used for the connected graph according to the multiple branch levels section, set up three-dimensional section view；
Mark unit, specifically can be used for by each branch levels section is marked in the three-dimensional section view the
The well depth and core intersection of the well depth and core intersection of one virtual log, the second virtual log of each described branch levels section, are obtained
The branch horizontal well predicts section.
Each embodiment in this specification is described by the way of progressive, identical similar portion between each embodiment
Divide mutually referring to what each embodiment was stressed is the difference with other embodiment.It is real especially for system
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 explanation.
It should be noted that system, device, module or unit that above-mentioned embodiment is illustrated, specifically can be by computer
Chip or entity are realized, or are realized by the product with certain function.For convenience of description, in this manual, retouch
It is divided into various units when stating apparatus above with function to describe respectively.Certainly, can be the function of each unit when implementing the application
Realized in same or multiple softwares and/or hardware.
In addition, in this manual, adjective can be only used for an element or dynamic such as first and second
Make to make a distinction with another element or action, without requiring or implying any actual this relation or order.Permit in environment
Perhaps in the case of, one should not be interpreted as limited to reference to element or part or step (s) in only element, part or step
It is individual, and can be one or more of element, part or step etc..
As can be seen from the above description, the branch horizontal well that the application embodiment is provided predicts the determination of section
Method and apparatus, by using drilled well and three dimensional seismic data, set up virtual log and obtain the spatial information (well depth of virtual log
And core intersection), the spatial information of oil reservoir in target area has been taken into full account, the connected graph of multiple branch levels sections has been set up, uses
To set up three-dimensional branch horizontal well prediction section, so as to predict that section is relatively comprehensive, accurate by the three-dimensional branch horizontal well
Ground symbolizes the specific spatial information of oil reservoir in target area, with the Drilling ratio for oil reservoir of improving the standard, solves in existing method
The technical problem that precision of prediction is poor, data characterization is inaccurate of presence, reached can accurately predicted branches horizontal well, refer to
Lead the technique effect of deployment branch horizontal well；Further through the thickness change situation according to the oil reservoir in target area, branch is determined
The direction of horizontal segment, has reached the technique effect for improving and instructing the deployment branch horizontal well degree of accuracy.
Scene is embodied at one, the determination method and apparatus pair that branch horizontal well predicts section are provided using the application
Branch horizontal well prediction section in certain block is determined.It can be performed in such a way during specific implementation.
Wherein, the data of certain block is obtained, the data can specifically include the three dimensional seismic data of the block, in the block
The well data of multiple drilled wells etc..By the analysis of the data to the block, certain block reservoir buried depth can be primarily determined that
For 909~955m, the average thickness of oil reservoir is 14.0m in certain block, and is lithology structural oil pool.In addition, specific in certain block
Also include 11 mouthfuls of oil well, drive a well 9 mouthfuls.Specifically, because by depositing, reservoir is influenceed, different parts straight well production effect in the block
Fruit differs greatly.
Preliminary situation is obtained according to above-mentioned analysis, in view of deployment area thing both sides straight well production effect difference is big, and due to
Two mouthfuls of drilled wells brill chance core intersection respectively positioned at north and south two ends is unbalanced, in order at utmost employ area's oil in place,
Carry out branch horizontal well deployment design.Using the application embodiment provide branch horizontal well prediction section determination method and
Device, the main horizontal segment of master-plan is extended from the thicker south of oil reservoir to the relatively thin the north of oil reservoir, wherein the length of the main horizontal segment
Spend for 450.3m.Four branches are designed in the both sides of the main horizontal segment.When it is implemented, can (S1 be extremely according to following steps
S4).That is, Type B virtual log 10 is first set up, recycles virtual log, drilled well and seismic data to set up connected graph, finally obtains branch
Horizontal well predicts section.
S1：The construction of virtual log on the hatching, oil reservoir developmental state are predicted by main horizontal segment oil reservoir profile first.
S2：Then the construction of remaining virtual log, oil reservoir developmental state are predicted by each branch levels section seismic cross-section.
S3：It is final to set up connected graph using 2 mouthfuls of drilled wells, 10 mouthfuls of virtual logs.
S4：Mark branch horizontal well design parameter.
It should be noted that the branch horizontal well obtained using this Sample Scenario predicts that section is in the block design and disposes
During branch horizontal well, the branch horizontal well can be disposed successfully.Specifically, backbone mark (main horizontal segment) and each branch track
(branch levels section) successfully enters target；And during Specific construction, the real horizontal section length that bores is consistent with design, and reservoir-encountered rate reaches
100%, operation postpeak oil-producing on duty for the day reaches 47.7t, and average day oil-producing is 2~3 times of conventional horizontal well in area, obtains preferable implementation
Effect.
In this Sample Scenario, in addition it is also necessary to explanation, during Specific construction, in branch horizontal well deployment area, with level
Section both sides drilled well connects between well, horizontal segment homonymy drilled well connects well extended line and the foundation of inside horizontal segment or extended line crosspoint
A type virtual logs, A types virtual log construction, oil reservoir developmental state are predicted using drilled well；With main horizontal segment and each branch levels section
Type B virtual log is set up in entrance, end points, by excessively main horizontal segment and each branch levels section oil reservoir profile or seismic cross-section,
Utilize drilled well, A types virtual log prediction Type B virtual log construction, oil reservoir developmental state；It is virtual using drilled well in area, Type B is disposed
Well sets up connected graph, marks branch horizontal well design parameter.
By above-mentioned Sample Scenario, demonstrate the offer of the application embodiment can solve really deposited in existing method
The technical problem that precision of prediction is poor, data characterization is inaccurate, reach accurately predicted branches horizontal well position, guidance department
Affix one's name to the technique effect of branch horizontal well.
Although mentioning the determination method or apparatus that different branch horizontal wells predict section in teachings herein, this
Application is not limited to be professional standard or the situation described by embodiment etc., some professional standards or using self-defined
Embodiment amended slightly can also realize that above-described embodiment is identical, equivalent in mode or the practice processes of embodiment description
Or the implementation result being anticipated that after close or deformation.Using the data acquisition after these modifications or deformation, processing, output, judgement
Within the scope of the embodiment of mode etc., the optional embodiment that still may belong to the application.
Although this application provides the method operating procedure as described in embodiment or flow chart, based on conventional or noninvasive
The means for the property made can include more or less operating procedures.The step of being enumerated in embodiment order is only numerous steps
A kind of mode in execution sequence, unique execution sequence is not represented., can when device or client production in practice is performed
To perform or perform parallel (such as at parallel processor or multithreading according to embodiment or method shown in the drawings order
The environment of reason, even distributed data processing environment).Term " comprising ", "comprising" or its any other variant are intended to contain
Lid nonexcludability is included, so that process, method, product or equipment including a series of key elements not only will including those
Element, but also other key elements including being not expressly set out, or also include being this process, method, product or equipment
Intrinsic key element.In the absence of more restrictions, be not precluded from the process including the key element, method, product or
Also there are other identical or equivalent elements in person's equipment.
Device or module that above-described embodiment is illustrated etc., can specifically be realized by computer chip or entity, or by having
There is the product of certain function to realize.For convenience of description, it is divided into various modules during description apparatus above with function to retouch respectively
State.Certainly, the function of each module can be realized in same or multiple softwares and/or hardware when implementing the application,
The module for realizing same function can be realized by the combination of multiple submodule etc..Device embodiment described above is only
Schematically, for example, the division of the module, only a kind of division of logic function, can there is other draw when actually realizing
The mode of dividing, such as multiple module or components can combine or be desirably integrated into another system, or some features can be ignored,
Or do not perform.
It is also known in the art that in addition to realizing controller in pure computer readable program code mode, it is complete
Controller can be caused with gate, switch, application specific integrated circuit, programmable by the way that method and step is carried out into programming in logic entirely
Logic controller realizes identical function with the form of embedded microcontroller etc..Therefore this controller is considered one kind
Hardware component, and the device for realizing various functions included to its inside can also be considered as the structure in hardware component.Or
Person even, not only can be able to will be the software module of implementation method but also can be hardware for realizing that the device of various functions is considered as
Structure in part.
The application can be described in the general context of computer executable instructions, such as program
Module.Usually, program module includes performing particular task or realizes routine, program, object, the group of particular abstract data type
Part, data structure, class etc..The application can also be put into practice in a distributed computing environment, in these DCEs,
Task is performed by the remote processing devices connected by communication network.In a distributed computing environment, program module can
With positioned at including in the local and remote computer-readable storage medium including storage device.
As seen through the above description of the embodiments, those skilled in the art can be understood that the application can
Realized by the mode of software plus required general hardware platform.Understood based on such, the technical scheme essence of the application
On the part that is contributed in other words to prior art can be embodied in the form of software product, the computer software product
It can be stored in storage medium, such as ROM/RAM, magnetic disc, CD, including some instructions are to cause a computer equipment
(can be personal computer, mobile terminal, server, or network equipment etc.) performs each embodiment of the application or implementation
Method described in some parts of example.
Each embodiment in this specification is described by the way of progressive, same or analogous portion between each embodiment
Divide mutually referring to what each embodiment was stressed is the difference with other embodiment.The application can be used for crowd
In more general or special purpose computing system environments or configuration.For example：Personal computer, server computer, handheld device or
Portable set, laptop device, multicomputer system, the system based on microprocessor, set top box, programmable electronics are set
Standby, network PC, minicom, DCE of mainframe computer including any of the above system or equipment etc..
Although depicting the application by embodiment, it will be appreciated by the skilled addressee that the application have it is many deformation and
Change is without departing from spirit herein, it is desirable to which appended claim includes these deformations and changed without departing from the application.
Claims (12)
1. a kind of branch horizontal well predicts the determination method of section, it is characterised in that including：
The well data of multiple drilled wells in the three dimensional seismic data of acquisition target area and target area；
According to the three dimensional seismic data and the well data of the multiple drilled well, multiple branch's water in main horizontal segment both sides
Set up multiple virtual logs in each branch levels section in flat section, and obtain in the multiple virtual log the well depth of each virtual log with
Core intersection；
According to the well depth and core intersection of the multiple virtual log, the company of each branch levels section in multiple branch levels sections is set up
Logical figure；
According to the connected graph of the multiple branch levels section, determine that branch horizontal well predicts section.
2. according to the method described in claim 1, it is characterised in that it is determined that after branch horizontal well prediction section, methods described
Also include：
Section is predicted according to the branch horizontal well, the deployment of branch horizontal well is carried out in the target area.
3. according to the method described in claim 1, it is characterised in that according to the three dimensional seismic data and the multiple drilled well
Well data, main horizontal segment both sides multiple branch levels section in each branch levels section in set up multiple virtual logs, and
The well depth and core intersection of each virtual log in the multiple virtual log are obtained, including：Set up described respectively according to following steps
Multiple virtual logs in multiple branch levels sections, and it is thick to obtain the well depth of each virtual log and oil reservoir in the multiple virtual log
Degree：
The line of two drilled wells in the multiple drilled well, determines the first virtual log of branch levels section；
According to the well data of the drilled well in the first virtual log preset range, the well depth and oil reservoir of first virtual log are determined
Thickness；
According to well depth and core intersection, the three dimensional seismic data of first virtual log, the branch levels section is determined
Direction；
Along the direction of branch levels section, the second virtual log of the branch levels section is determined；
According to the well data of the drilled well in the second virtual log preset range, the well depth and oil reservoir of second virtual log are determined
Thickness.
4. method according to claim 3, it is characterised in that the company of two drilled wells in the multiple drilled well
Line, determines the first virtual log of branch levels section, including：
Using the intersection point of the extended line of the line of two drilled wells of the main horizontal segment homonymy and the main horizontal segment as described
The position of first virtual log of branch levels section；
And/or,
It regard the intersection point of the main the horizontal segment not line of two drilled wells of homonymy and the main horizontal segment as branch's water
The position of first virtual log of flat section.
5. method according to claim 3, it is characterised in that the drilled well according in the first virtual log preset range
Well data, determine the well depth and core intersection of first virtual log, including：
According to the well data of the drilled well in the first virtual log preset range, by interpolation algorithm, described first is determined
The well depth and core intersection of virtual log.
6. method according to claim 3, it is characterised in that according to the well depth and core intersection of first virtual log,
The three dimensional seismic data, determines the direction of the branch levels section, including：
According to well depth and core intersection, the three dimensional seismic data of first virtual log, the stability of selection oil reservoir reaches
The direction of predetermined threshold value as the branch levels section direction.
7. method according to claim 3, it is characterised in that according to the well depth and core intersection of the multiple virtual log,
The connected graph of multiple branch levels sections is set up in the both sides of main horizontal segment, including：
According to the well depth and core intersection of the first virtual log of each branch levels section, the second void in the multiple branch levels section
Intend the well depth and core intersection of well, determine the oil reservoir situation of change of the branch levels section region；
According to the oil reservoir situation of change of branch levels section region, the connected graph of the branch levels section is determined.
8. method according to claim 7, it is characterised in that become according to the oil reservoir of branch levels section region
After change situation, the connected graph for determining the branch levels section, methods described also includes：
Determine whether the connectedness of the connected graph of the branch levels section reaches preset requirement；
If being not reaching to the preset requirement, the direction of the branch levels section is redefined.
9. method according to claim 3, it is characterised in that according to the connected graph of the multiple branch levels section, it is determined that
Branch horizontal well predicts section, including：
According to the connected graph of the multiple branch levels section, three-dimensional section view is set up；
By the well depth and core intersection of the first virtual log that each branch levels section is marked in the three-dimensional section view,
The well depth and core intersection of second virtual log of each branch levels section, obtain the branch horizontal well prediction section.
10. a kind of branch horizontal well predicts the determining device of section, it is characterised in that including：
Acquisition module, for obtaining the three dimensional seismic data of target area and the well data of multiple drilled wells in target area；
First sets up module, for the well data according to the three dimensional seismic data and the multiple drilled well, in main level
Multiple virtual logs are set up in each branch levels section in multiple branch levels section of section both sides, and are obtained in the multiple virtual log
The well depth and core intersection of each virtual log；
Second sets up module, for the well depth and core intersection according to the multiple virtual log, sets up in multiple branch levels sections
The connected graph of each branch levels section；
Determining module, for the connected graph according to the multiple branch levels section, determines that branch horizontal well predicts section.
11. device according to claim 10, it is characterised in that described device also includes：
Deployment module, for predicting section according to the branch horizontal well, the portion of branch horizontal well is carried out in the target area
Administration.
12. device according to claim 10, it is characterised in that described first, which sets up module, includes：
First determining unit, for the line of two drilled wells in the multiple drilled well, determines branch levels section
First virtual log；
Second determining unit, for the well data according to the drilled well in the first virtual log preset range, determines described first
The well depth and core intersection of virtual log；
3rd determining unit, for well depth and core intersection, the three dimensional seismic data according to first virtual log, it is determined that
The direction of the branch levels section；
4th determining unit, for along the direction of branch levels section, determining the second virtual log of the branch levels section；
5th determining unit, for the well data according to the drilled well in the second virtual log preset range, determines described second
The well depth and core intersection of virtual log.
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