CN103498670B - Horizontal well geological predication method and apparatus - Google Patents
Horizontal well geological predication method and apparatus Download PDFInfo
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- CN103498670B CN103498670B CN201310418264.4A CN201310418264A CN103498670B CN 103498670 B CN103498670 B CN 103498670B CN 201310418264 A CN201310418264 A CN 201310418264A CN 103498670 B CN103498670 B CN 103498670B
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Abstract
The invention provides a kind of horizontal well geological predication method and apparatus, wherein, the method comprises: according to the straight well position of finishing drilling and the horizontal segment position of described horizontal well in work area, horizontal well place, determine the virtual log position of horizontal well geological predication; According to the oil reservoir section of the straight well of described finishing drilling, determine the oil reservoir section of described virtual log; According to the oil reservoir section of described virtual log, determine the oil reservoir section of the horizontal segment of described horizontal well; Oil reservoir section according to the horizontal segment of described horizontal well carries out Geological Prediction.The invention solves prior art when the controlling extent of well is not high, effectively cannot dispose the technical problem of horizontal well, reach and expand the scope that horizontal well is disposed and the technique effect improving the accuracy of disposing.
Description
Technical field
The present invention relates to technical field of petroleum exploration, particularly a kind of horizontal well geological predication method and apparatus.
Background technology
At present, horizontal well is the important means of Reservoir Development, and the horizontal segment design of horizontal well is the primary link that horizontal well is implemented, the quality of horizontal segment design, directly decide water horizontal well can and bore chance oil-gas Layer, and can final decision obtain expected yield and economic benefit.
So-called horizontal well is exactly that hole angle reaches or close to 90 °, well bore creeps into the well of certain length along horizontal direction, the quite long segment length of well horizontal-extending in oil reservoir of horizontal well.Sometimes in order to certain special needs, hole angle can more than 90 °.In general, horizontal well is suitable for various types of oil-gas reservoir, and the object of disposing horizontal well is the contact area increasing pit shaft and oil reservoir.
It is different that the mentality of designing of horizontal well and method for designing laterally drill oil reservoir from conventional straight well, directional well, and it requires longitudinally to bore to meet oil reservoir.In the process determining the degree of depth that horizontal segment is disposed, need the oil reservoir section getting this horizontal segment region.But, the determination process need of oil reservoir section is depended on to the straight well (abbreviation drilled well) of finishing drilling, because these drilled wells directly can react the developmental state of oil reservoir longitudinal direction, then directly by just can determine the oil reservoir section of horizontal segment region to be disposed to the Conjoint Analysis of the oil reservoir section of multiple drilled well, thus the deployed position of horizontal segment can be gone out according to the oil reservoir section effective execution determined.
As the above analysis, dispose horizontal well to need to depend on abundant drilled well, determine the oil reservoir section of horizontal segment, but, abundant drilled well is not had in a lot of oil fields, namely there will be the situation that the controlling extent of well is not high, so also just cannot go out the oil reservoir section of the horizontal segment of horizontal well by Accurate Prediction, also just cause effectively to dispose horizontal well.
For the problems referred to above, at present effective solution is not yet proposed.
Summary of the invention
Embodiments provide a kind of horizontal well geological predication method and apparatus, at least to solve in prior art when the controlling extent of well is not high, cannot effectively to the technical problem that the geology of horizontal well is predicted.
Embodiments provide a kind of horizontal well geological predication method, comprising: according to the straight well position of finishing drilling and the horizontal segment position of described horizontal well in work area, horizontal well place, determine the virtual log position of horizontal well geological predication; According to the oil reservoir section of the straight well of described finishing drilling, determine the oil reservoir section of described virtual log; According to the oil reservoir section of described virtual log, determine the oil reservoir section of the horizontal segment of described horizontal well; Oil reservoir section according to the horizontal segment of described horizontal well carries out Geological Prediction.
In one embodiment, described virtual log is positioned on the horizontal segment of described horizontal well, or on the extended line of described horizontal segment.
In one embodiment, according to the straight well position of finishing drilling and the horizontal segment position of described horizontal well in work area, horizontal well place, the virtual log position determining horizontal well geological predication comprises: determine in work area, horizontal well place, two place, finishing drilling straight well position straight lines; By the intersection point of two horizontal segments of finishing drilling straight well position place straight line and described horizontal well, be defined as the position of virtual log; Or by the intersection point of two extended lines of the horizontal segment of finishing drilling straight well position place straight line and described horizontal well, be defined as the position of virtual log; According to the oil reservoir section of the straight well of described finishing drilling, determine the oil reservoir section of described virtual log, comprising: according to the oil reservoir section of described two finishing drilling straight wells, dope the oil reservoir section of this virtual log.
In one embodiment, determine that the oil reservoir section of the horizontal segment of described horizontal well comprises according to the oil reservoir section of virtual log: when only determining a virtual log, according to the oil reservoir section of the virtual log determined, with be positioned at described horizontal well horizontal segment extended line on the oil reservoir section of straight well of finishing drilling, determine the oil reservoir section of the horizontal segment of described horizontal well; Or, when determining more than one virtual log, according in the multiple virtual log determined, the oil reservoir section of nearest with the mid point of the horizontal segment of described horizontal well two virtual log, determine the oil reservoir section of the horizontal segment of horizontal well.
In one embodiment, carry out Geological Prediction according to the oil reservoir section of the horizontal segment of described horizontal well and comprise: according to the oil reservoir section of the horizontal segment of the horizontal well determined, the structure of the horizontal segment of prediction level well and the developmental state of oil reservoir.
The embodiment of the present invention additionally provides a kind of horizontal well geological predication device, comprise: virtual log position determination module, for according to the straight well position of finishing drilling and the horizontal segment position of described horizontal well in work area, horizontal well place, determine the virtual log position of horizontal well geological predication; Virtual log oil reservoir section determination module, for the oil reservoir section of the straight well according to described finishing drilling, determines the oil reservoir section of described virtual log; Horizontal well oil reservoir section determination module, for the oil reservoir section according to described virtual log, determines the oil reservoir section of the horizontal segment of described horizontal well; Geological Prediction module, the oil reservoir section for the horizontal segment according to described horizontal well carries out Geological Prediction.
In one embodiment, the virtual log that described virtual log position determination module is determined is positioned on the horizontal segment of described horizontal well, or on the extended line of described horizontal segment.
In one embodiment, described virtual log position determination module comprises: processing unit, for determining in work area, horizontal well place, and two place, finishing drilling straight well position straight lines; First determining unit, for the intersection point by two horizontal segments of finishing drilling straight well position place straight line and described horizontal well, is defined as the position of virtual log; Or by the intersection point of two extended lines of the horizontal segment of finishing drilling straight well position place straight line and described horizontal well, be defined as the position of virtual log; Described virtual log oil reservoir section determination module, specifically for the oil reservoir section according to described two finishing drilling straight wells, dopes the oil reservoir section of this virtual log.
In one embodiment, horizontal well oil reservoir section determination module comprises: the second determining unit, for when only determining a virtual log, according to the oil reservoir section of the virtual log determined, with be positioned at described horizontal well horizontal segment extended line on the oil reservoir section of straight well of finishing drilling, determine the oil reservoir section of the horizontal segment of described horizontal well; Or, 3rd determining unit, for when determining more than one virtual log, according to the oil reservoir section of two virtual log nearest with the mid point of the horizontal segment of described horizontal well in the multiple virtual log determined, determine the oil reservoir section of the horizontal segment of horizontal well.
In one embodiment, Geological Prediction module specifically for the oil reservoir section of the horizontal segment according to the horizontal well determined, the structure of the horizontal segment of prediction level well and the developmental state of oil reservoir.
In the above-described embodiments, according to the straight well position of finishing drilling being positioned at same work area with horizontal well, and the position of virtual log is determined in the position of the horizontal segment of horizontal well, and then the oil reservoir section of virtual log is determined according to the oil reservoir section of the straight well of finishing drilling, and the oil reservoir section of the horizontal segment of horizontal well is doped according to the oil reservoir section of virtual log, the Geological Prediction of horizontal well is finally carried out according to the oil reservoir section of the horizontal segment of horizontal well.By the way, efficiently solve prior art when the controlling extent of well is not high, cannot effectively to the technical problem that the geology of horizontal well is predicted, reach the effective prediction realizing the geology to horizontal well when the controlling extent of well is not high, expand the deployment scope of horizontal well and improve the technique effect of the accuracy of disposing.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms a application's part, does not form limitation of the invention.In the accompanying drawings:
Fig. 1 is the flow chart of the horizontal well geological predication method of the embodiment of the present invention;
Fig. 2 is the position view of the horizontal well of the embodiment of the present invention and the straight well of finishing drilling around;
Fig. 3 is the position view of two virtual log of the determination of the embodiment of the present invention;
Fig. 4 is the oil reservoir generalized section of the virtual log 2 of the embodiment of the present invention;
Fig. 5 is the oil reservoir generalized section of the virtual log 1 of the embodiment of the present invention;
Fig. 6 is the oil reservoir generalized section of the horizontal segment of the horizontal well of the embodiment of the present invention;
Fig. 7 is the structured flowchart of the horizontal well geological predication device of the embodiment of the present invention;
Fig. 8 is the structured flowchart of the instantiation of the horizontal well geological predication device of the embodiment of the present invention.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with embodiment and accompanying drawing, the present invention is described in further details.At this, exemplary embodiment of the present invention and illustrating for explaining the present invention, but not as a limitation of the invention.
Embodiments provide a kind of horizontal well geological predication method, as shown in Figure 1, comprise the following steps:
Step 101: according to the straight well position of finishing drilling and the horizontal segment position of described horizontal well in work area, horizontal well place, determine the virtual log position of horizontal well geological predication;
Step 102: according to the oil reservoir section of the straight well of described finishing drilling, determines the oil reservoir section of described virtual log;
Step 103: according to the oil reservoir section of described virtual log, determines the oil reservoir section of the horizontal segment of described horizontal well;
Step 104: the oil reservoir section according to the horizontal segment of described horizontal well carries out Geological Prediction.
In the above-described embodiment, according to the straight well position of finishing drilling being positioned at same work area with horizontal well, and the position of virtual log is determined in the position of the horizontal segment of horizontal well, and then the oil reservoir section of virtual log is determined according to the oil reservoir section of the straight well of finishing drilling, and the oil reservoir section of the horizontal segment of horizontal well is doped according to the oil reservoir section of virtual log, the Geological Prediction of horizontal well is finally carried out according to the oil reservoir section of the horizontal segment of horizontal well.By the way, efficiently solve prior art when the controlling extent of well is not high, cannot effectively to the technical problem that the geology of horizontal well is predicted, reach the effective prediction realizing the geology to horizontal well when the controlling extent of well is not high, expand the deployment scope of horizontal well and improve the technique effect of the accuracy of disposing.
In order to realize the prediction of the oil reservoir section of the horizontal segment to horizontal well more accurately, determined virtual log can be positioned on the horizontal segment of horizontal well, or on the extended line of horizontal segment.The virtual log determined like this because be located along the same line with the horizontal segment of horizontal well, predicting the outcome, also just closer to the oil reservoir section of the horizontal segment of horizontal well so to the oil reservoir section of virtual log.
For how determining that the position of virtual log can be as shown in Figures 2 and 3, based on the position view of the straight well (referred to as drilled well) of the horizontal well shown in Fig. 2 and finishing drilling around, wherein, comprise: the first finishing drilling straight well 201, second finishing drilling straight well 202, the 3rd finishing drilling straight well 203, the 4th finishing drilling straight well 204, the 5th finishing drilling straight well 205, horizontal well 206, wherein, A and B 2 represents two end points of horizontal well 206 horizontal segment.The position of virtual log can be determined in accordance with the following methods, comprising:
1) determine in work area, horizontal well place, two place, finishing drilling straight well position straight lines;
2) by two place, finishing drilling straight well position straight lines, with the intersection point of the horizontal segment of the described horizontal well position as the virtual log determined, or using the intersection point of two extended lines of the horizontal segment of finishing drilling straight well position place straight line and described horizontal well as the position of the virtual log determined.
It should be noted that, the position of a virtual log at most only can be determined in position above by two finishing drilling straight wells, when there being multiple straight well of finishing drilling, combination of two just can determine the position of multiple virtual log, therefore, as long as determine that the mode of the position of a virtual log carries out operating the position just can determining multiple virtual log according to above-mentioned.
Just two virtual log (virtual log 1 and virtual log 2) as shown in Figure 3 can be obtained in the manner described above, wherein, the point of intersection of the horizontal segment (line segment AB) that the first virtual log is positioned at horizontal well 206 and the second finishing drilling straight well and the 3rd finishing drilling straight well place straight line, the point of intersection of the extended line and the 4th that the second virtual log 202 is positioned at the horizontal segment (AB) of horizontal well 206 finishing drilling straight well 204 and the 5th finishing drilling straight well 205 place straight line.The first virtual log 301 determined by the way and the second virtual log 302 are all positioned on the horizontal segment of horizontal well.As long as the oil reservoir section determining the first virtual log 301 and the second virtual log 302 so just effectively can dope the oil reservoir section of the horizontal segment of horizontal well.
In the process implemented, if the number ratio of the straight well of finishing drilling is more, the first virtual log 301 and the second virtual log 302 so can be determined as Fig. 3, but, in the process implemented, consider also likely only there is the 4th finishing drilling straight well 204 and the 5th finishing drilling straight well 205, and there is not the second finishing drilling straight well 202 and the 3rd finishing drilling straight well 203, or only there is the second finishing drilling straight well 202 and the 3rd finishing drilling straight well 203, and there is not the 4th finishing drilling straight well 204 and the 5th finishing drilling straight well 205.So also just can only determine a virtual log.For above-mentioned two situations, provide following two kinds of processing modes in embodiments of the present invention:
1) when only determining a virtual log, according to the oil reservoir section of this virtual log determined, and be positioned at horizontal well horizontal segment extended line on the oil reservoir section of straight well of finishing drilling, determine the oil reservoir section of the horizontal segment of horizontal well; That is, if only determine a virtual log (supposing the first virtual log only determined as shown in Figure 3), so just can according to the oil reservoir section of the first finishing drilling straight well, and the oil reservoir section of the first virtual log carrys out the oil reservoir section of the horizontal segment of prediction level well.
2) when determining more than one virtual log, according in the multiple virtual log determined, the oil reservoir section of nearest with the mid point of the horizontal segment of horizontal well two virtual log, determine the oil reservoir section of the horizontal segment of horizontal well to be measured.Namely, if determine two or more virtual log, so can select two wherein nearest apart from the mid point of the horizontal segment of this horizontal well to be measured virtual log, determine the oil reservoir section of the horizontal segment of horizontal well, because be also close apart from the oil reservoir section situation near region, the result determined by the oil reservoir section of the virtual log of close together is also just more close to the truth of the horizontal segment oil reservoir section of horizontal well.
In the process implemented, the horizontal segment that also may appear at horizontal well to be measured only has the straight well of a finishing drilling, the namely situation of individual well, just need the structure in conjunction with work area so in this case, adopt the mode of extrapolation (namely, individual well based on current finishing drilling outwards carries out extension and infers) determine a virtual log, and the oil reservoir section of this virtual log.
In the oil reservoir section defining method of the horizontal segment of above-mentioned horizontal well, the prediction one of the oil reservoir section related to has two places, one is predict the oil reservoir section of virtual log, and one is the oil reservoir section predicting the horizontal segment of horizontal well to be measured according to the oil reservoir section of virtual log.Wherein, determine that the oil reservoir section of one or more virtual log can comprise according to the oil reservoir section of the straight well of finishing drilling: according to the oil reservoir section of two straight wells of finishing drilling, dope the oil reservoir section of virtual log, wherein, the straight well position of described two finishing drillings be positioned at determine this virtual log position straight line on.
The principle of this forecasting process institute foundation is the change of oil reservoir section is in the same horizontal line generally regular.Such as, as shown in Figure 3, 4th finishing drilling straight well 204, 5th finishing drilling straight well 205 and the second virtual log 302 are in the same horizontal line, because, 4th finishing drilling straight well 204 and the 5th finishing drilling straight well 205 be all the well of finishing drilling, therefore the oil reservoir section of these two straight wells directly can be measured and obtain, suppose to measure the result that obtains as shown in Figure 4, wherein, in Fig. 4 204 represents that the 4th finishing drilling straight well of its correspondences, in Fig. 4 1600, 1597.7 etc. represent the degree of depth, its unit be m(in like manner, also be this representation in fig. 5 and fig., follow-uply will to repeat no more), because the oil reservoir section on same level line regularly changes, so after the oil reservoir section getting the 4th finishing drilling straight well 204 and the 5th finishing drilling straight well 205, reckoning can obtain the oil reservoir section of the second virtual log 302.In like manner, obtain as shown in Figure 5 in measurement, after the oil reservoir section of the second finishing drilling straight well 202 and the 3rd finishing drilling straight well 203, also can dope the oil reservoir section of the first virtual log 301.
After the oil reservoir section of acquisition first virtual log 301 and the second virtual log 302, also just can dope the oil reservoir section of the horizontal segment of horizontal well to be measured as shown in Figure 6.
The structure in structure work area, determines the straight well set up near horizontal well, and the straight well then based on the finishing drilling determined sets up virtual log, then carrys out the oil reservoir section of the horizontal segment of prediction level well.Just can based on the oil reservoir developmental state of the horizontal segment of this prediction level well after the oil reservoir section of horizontal segment determining horizontal well, thus can the design and implementation of effective Guidance Levels well, such as, can according to the structure situation of the oil reservoir section determination target zone of prediction, the developmental state of oil reservoir, and reservoir is every the distribution characteristics of interlayer, effectively can determine the position etc. of horizontal segment in underground, improve the standard reservoir-encountered rate, the horizontal well yield of guarantee of well, the design and implementation for horizontal well provides effectively and foundation intuitively.Such as, according to the oil reservoir section of the horizontal segment of the horizontal well determined, the structure of the horizontal segment of horizontal well and the developmental state of oil reservoir can be doped; Then, according to the structure of horizontal segment and the developmental state of oil reservoir of the horizontal well of prediction, just effectively can determine the enforcement track of horizontal well, wherein, the parameter of the enforcement track of horizontal well can comprise following one of at least: the degree of depth, azimuth etc. that hole angle, horizontal segment are laid.The enforcement track of so-called horizontal well can comprise, and horizontal segment is arranged from which position, and arranges the hole angle etc. of what kind of degree of depth or what angle.But, it should be noted that the above-mentioned cited parameter included by enforcement track is only an example, the present invention is not limited thereto, the parameter information that other is used to indicate horizontal well enforcement can also be comprised,
The example disposed below in conjunction with an actual horizontal well illustrates the effect of above-mentioned horizontal well geological predication method:
The reservoir buried depth in certain oil field is 1918 ~ 2065m, and high-order bit oil reservoir is grown thicker, and thinning to edge oil reservoir, the average thickness of oil reservoir is 13.5m, is lithology structural oil pool.In this oil field region, have oil well 21 mouthfuls, but, straight well due to its production effect poor, only 1 mouthful of well is normally produced, and other well is all closed down.
Therefore, in this oil field region, dispose horizontal well, horizontal section length is 320m.But horizontal well deployment district's drilled well is less, and the controlling extent of well is lower, dispose horizontal well nearest finishing drilling straight well 118m.Dispose horizontal well by the oil reservoir section defining method of the horizontal segment of above-mentioned horizontal well, utilize finishing drilling straight well to set up 2 mouthfuls of virtual log, established the prediction section of this horizontal well by virtual log, and implement to the concrete enforcement track of horizontal well.Terminal level well successfully enters target, and horizontal segment is implemented smoothly, and horizontal segment reservoir-encountered rate reaches 95%, and well production capacity after coming into operation is higher.
Based on same inventive concept, additionally provide a kind of horizontal well geological predication device in the embodiment of the present invention, as described in the following examples.The principle of dealing with problems due to horizontal well geological predication device is similar to the horizontal segment Geological Prediction method of horizontal well, and therefore the enforcement of horizontal well geological predication device see the enforcement of horizontal well geological predication method, can repeat part and repeat no more.Following used, term " unit " or " module " can realize the software of predetermined function and/or the combination of hardware.Although the device described by following examples preferably realizes with software, hardware, or the realization of the combination of software and hardware also may and conceived.Fig. 7 is a kind of structured flowchart of the horizontal well geological predication device of the embodiment of the present invention, as shown in Figure 7, comprise: virtual log position determination module 701, virtual log oil reservoir section determination module 702, horizontal well oil reservoir section determination module 703 and Geological Prediction module 704, be described this structure below.
Virtual log position determination module 701, for according to the straight well position of finishing drilling and the horizontal segment position of described horizontal well in work area, horizontal well place, determines the virtual log position of horizontal well geological predication;
Virtual log oil reservoir section determination module 702, for the oil reservoir section of the straight well according to described finishing drilling, determines the oil reservoir section of described virtual log;
Horizontal well oil reservoir section determination module 703, for the oil reservoir section according to described virtual log, determines the oil reservoir section of the horizontal segment of described horizontal well;
Geological Prediction module 704, the oil reservoir section for the horizontal segment according to described horizontal well carries out Geological Prediction.
In one embodiment, the virtual log that virtual log position determination module 701 is determined is positioned on the horizontal segment of described horizontal well, or on the extended line of described horizontal segment.
In one embodiment, as shown in Figure 8, virtual log position determination module 701 comprises: processing unit 801, for determining in work area, horizontal well place, and two place, finishing drilling straight well position straight lines; First determining unit 802, for the intersection point by two horizontal segments of finishing drilling straight well position place straight line and described horizontal well, is defined as the position of virtual log; Or by the intersection point of two extended lines of the horizontal segment of finishing drilling straight well position place straight line and described horizontal well, be defined as the position of virtual log.Virtual log oil reservoir section determination module, specifically for the oil reservoir section according to described two finishing drilling straight wells, dopes the oil reservoir section of this virtual log.
In one embodiment, described horizontal well oil reservoir section determination module comprises: the second determining unit, for when only determining a virtual log, according to the oil reservoir section of the described virtual log determined, with be positioned at horizontal well horizontal segment extended line on the oil reservoir section of straight well of finishing drilling, determine the oil reservoir section of the horizontal segment of horizontal well; Or, 3rd determining unit, for when determining more than one virtual log, according in the multiple virtual log determined, the oil reservoir section of nearest with the mid point of the horizontal segment of horizontal well two virtual log, determine the oil reservoir section of the horizontal segment of horizontal well.
In one embodiment, Geological Prediction module specifically may be used for the oil reservoir section of the horizontal segment according to the horizontal well determined, the structure of the horizontal segment of prediction level well and the developmental state of oil reservoir.
From above description, can find out, the embodiment of the present invention achieves following technique effect: according to the straight well position of finishing drilling being positioned at same work area with horizontal well, and the position of virtual log is determined in the position of the horizontal segment of horizontal well, and then the oil reservoir section of virtual log is determined according to the oil reservoir section of the straight well of finishing drilling, and the oil reservoir section of the horizontal segment of horizontal well is doped according to the oil reservoir section of virtual log, the Geological Prediction of horizontal well is finally carried out according to the oil reservoir section of the horizontal segment of horizontal well.By the way, efficiently solve prior art when the controlling extent of well is not high, cannot effectively to the technical problem that the geology of horizontal well is predicted, reach the effective prediction realizing the geology to horizontal well when the controlling extent of well is not high, expand the deployment scope of horizontal well and improve the technique effect of the accuracy of disposing.
Obviously, those skilled in the art should be understood that, each module of the above-mentioned embodiment of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the embodiment of the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the embodiment of the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a horizontal well geological predication method, is characterized in that, comprising:
According to the straight well position of finishing drilling and the horizontal segment position of described horizontal well in work area, horizontal well place, determine the virtual log position of horizontal well geological predication;
According to the oil reservoir section of the straight well of described finishing drilling, determine the oil reservoir section of described virtual log;
According to the oil reservoir section of described virtual log, determine the oil reservoir section of the horizontal segment of described horizontal well;
Oil reservoir section according to the horizontal segment of described horizontal well carries out Geological Prediction;
Wherein, according to the straight well position of finishing drilling and the horizontal segment position of described horizontal well in work area, horizontal well place, the virtual log position determining horizontal well geological predication comprises: determine in work area, horizontal well place, two place, finishing drilling straight well position straight lines; By the intersection point of two horizontal segments of finishing drilling straight well position place straight line and described horizontal well, be defined as the position of virtual log; Or by the intersection point of two extended lines of the horizontal segment of finishing drilling straight well position place straight line and described horizontal well, be defined as the position of virtual log; According to the oil reservoir section of the straight well of described finishing drilling, determine the oil reservoir section of described virtual log, comprising: according to the oil reservoir section of described two finishing drilling straight wells, dope the oil reservoir section of this virtual log.
2. the method for claim 1, is characterized in that, described virtual log is positioned on the horizontal segment of described horizontal well, or on the extended line of described horizontal segment.
3. the method for claim 1, is characterized in that, determines that the oil reservoir section of the horizontal segment of described horizontal well comprises according to the oil reservoir section of virtual log:
When only determining a virtual log, according to the oil reservoir section of the virtual log determined, and be positioned at described horizontal well horizontal segment extended line on the oil reservoir section of straight well of finishing drilling, determine the oil reservoir section of the horizontal segment of described horizontal well;
Or, when determining more than one virtual log, according in the multiple virtual log determined, the oil reservoir section of nearest with the mid point of the horizontal segment of described horizontal well two virtual log, determine the oil reservoir section of the horizontal segment of horizontal well.
4. method as claimed any one in claims 1 to 3, is characterized in that, carry out Geological Prediction comprise according to the oil reservoir section of the horizontal segment of described horizontal well:
According to the oil reservoir section of the horizontal segment of the horizontal well determined, the structure of the horizontal segment of prediction level well and the developmental state of oil reservoir.
5. a horizontal well geological predication device, is characterized in that, comprising:
Virtual log position determination module, for according to the straight well position of finishing drilling and the horizontal segment position of described horizontal well in work area, horizontal well place, determines the virtual log position of horizontal well geological predication;
Virtual log oil reservoir section determination module, for the oil reservoir section of the straight well according to described finishing drilling, determines the oil reservoir section of described virtual log;
Horizontal well oil reservoir section determination module, for the oil reservoir section according to described virtual log, determines the oil reservoir section of the horizontal segment of described horizontal well;
Geological Prediction module, the oil reservoir section for the horizontal segment according to described horizontal well carries out Geological Prediction.
6. device as claimed in claim 5, it is characterized in that, the virtual log that described virtual log position determination module is determined is positioned on the horizontal segment of described horizontal well, or on the extended line of described horizontal segment.
7. device as claimed in claim 5, it is characterized in that, described virtual log position determination module comprises:
Processing unit, for determining in work area, horizontal well place, two place, finishing drilling straight well position straight lines;
First determining unit, for the intersection point by two horizontal segments of finishing drilling straight well position place straight line and described horizontal well, is defined as the position of virtual log; Or by the intersection point of two extended lines of the horizontal segment of finishing drilling straight well position place straight line and described horizontal well, be defined as the position of virtual log;
Described virtual log oil reservoir section determination module, specifically for the oil reservoir section according to described two finishing drilling straight wells, dopes the oil reservoir section of this virtual log.
8. device as claimed in claim 7, it is characterized in that, described horizontal well oil reservoir section determination module comprises:
Second determining unit, for when only determining a virtual log, according to the oil reservoir section of the virtual log determined, and be positioned at described horizontal well horizontal segment extended line on the oil reservoir section of straight well of finishing drilling, determine the oil reservoir section of the horizontal segment of described horizontal well;
Or, 3rd determining unit, for when determining more than one virtual log, according in the multiple virtual log determined, the oil reservoir section of nearest with the mid point of the horizontal segment of described horizontal well two virtual log, determine the oil reservoir section of the horizontal segment of horizontal well.
9. the device according to any one of claim 5 to 8, is characterized in that, described Geological Prediction module specifically for the oil reservoir section of the horizontal segment according to the horizontal well determined, the structure of the horizontal segment of prediction level well and the developmental state of oil reservoir.
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| CN105631753B (en) * | 2015-12-14 | 2020-03-10 | 中国石油天然气集团公司 | Horizontal well oil reservoir profile modeling method based on stratum attitude |
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| CN106761672B (en) * | 2016-12-06 | 2019-07-09 | 中国石油天然气股份有限公司 | Every interlayer inter-wells predicting method and device |
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