CN107871023A - Optimize the new method of radial direction perforation track - Google Patents
Optimize the new method of radial direction perforation track Download PDFInfo
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- CN107871023A CN107871023A CN201610844126.6A CN201610844126A CN107871023A CN 107871023 A CN107871023 A CN 107871023A CN 201610844126 A CN201610844126 A CN 201610844126A CN 107871023 A CN107871023 A CN 107871023A
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- G06F30/20—Design optimisation, verification or simulation
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Abstract
The present invention provides a kind of new method for optimizing radial direction perforation track, and the new method of the optimization radial direction perforation track includes：Step 1, infinitely great stratigraphic model is established；Step 2, reservoir model is established in stratigraphic model；Step 3, well locus model is established in reservoir model；Step 4, radial direction perforation locus model is established on the basis of well track；Step 5, radial direction perforation orientation and length are optimized according to spatial mathematic.The new method of the optimization radial direction perforation track ensures that high aquifer formation in reservoir, is avoided in perforation track always, prevents interlayer interference, improves radial direction perforation development effectiveness, increases drainage area, reaches the purpose of volume increase.
Description
Technical field
The present invention relates to oil field development technical field, especially relates to a kind of new method for optimizing radial direction perforation track.
Background technology
Radial direction perforating technology is a kind of oil gas field volume increase and completion technique, predominantly thin reservoir, hyposmosis and Margin reservoir
A kind of the way of exploitation of economical and efficient is provided；The reservoir that is particularly suitable for use in is single, and permeability is low, the exploitation of the relatively low oil reservoir of production capacity.
The hole of 100 meters of about 50 mm length of diameter can be radially crept into using the technology.And can according to strata condition,
It is designed to multidirectional multiple-limb radial hole.Trend can be tentatively controlled, can be as a kind of means of completion.
But at the scene in implementation process, occur projecting target zone, be shot through the phenomenon of water layer, cause the full water that brings in,
The purpose not up to increased production.Due to can not effectively be monitored to radial direction perforation track at present, find a kind of excellent to perforation track
The method for changing design is particularly important.For this we have invented a kind of new method of new optimization radial direction perforation track, solve
Above technical problem.
The content of the invention
It is an object of the invention to provide the factors such as a kind of comprehensive wellbore trajectory, formation parameter, perforation orientation, ensure radially to penetrate
Hole completion is smoothly implemented, while the optimization radial direction perforation that can also optimize to implementing radial direction perforated interval early excise wellbore trajectory
The new method of track.
The purpose of the present invention can be achieved by the following technical measures：Optimize the new method of radial direction perforation track, the optimization
The new method of radial direction perforation track includes：Step 1, infinitely great stratigraphic model is established；Step 2, reservoir is established in stratigraphic model
Model；Step 3, well locus model is established in reservoir model；Step 4, radial direction perforation track is established on the basis of well track
Model；Step 5, radial direction perforation orientation and length are optimized according to spatial mathematic.
The purpose of the present invention can be also achieved by the following technical measures：
In step 1, infinitely great stratum threedimensional model is established, X, Y, Z-direction, model is parallel to horizontal direction, wherein X side
To being horizontal plane direction for direction of strata direction, Z-direction, Y-direction is in horizontal plane and X vertical direction.
In step 2, reservoir is simplified, it is believed that reservoir formation change is consistent, ignores reservoir thickness change, according to storage
Inclination layer, thickness establish reservoir model.
In step 3, it is assumed that oil well enters stratum hole deviation unchanged direction, and according to hole deviation, well locus model is established in well orientation.
In step 4, it is assumed that radial direction perforation direction is vertical with well depth track, radial direction perforation direction linear extension, according to penetrating
Hole site, perforation orientation establish perforation locus model.
In steps of 5, according to locus angular relationship, length of the radial direction perforation in reservoir and each variable are derived
Relation：
Wherein, α --- inclination angle,
σ --- tendency,
β --- hole angle,
δ --- drift azimuth,
θ --- perforation orientation angle,
M --- shooting point away from upper headroom height,
L --- perforating length in target zone.
In steps of 5, the various parameters of purpose well are calculated critical distance of the radial direction perforation in reservoir by formula 1, it is excellent
Change perforation orientation, correct wellbore trajectory, avoid water layer and Water Flooding Layer, prevent the interference of high aquifer formation in interlayer and layer, make mesh
Layer in perforating length reach design requirement, while to needing radial direction perforated hole to carry out wellbore trajectory optimization in advance, make radially complete
Well effect reaches optimal.
The new method of optimization radial direction perforation track in the present invention, it is contemplated that reservoir inclination angle, tendency, wellbore trajectory, perforation
The parameters such as depth, orientation, space multistory model is built, an important factor for analyzing influence perforation track, establish a set of optimization perforation
The effective ways of design.This method is to be applicable the computational methods of optimization radial direction perforation track, to solve perforation track in the earth formation
The problem of can not monitoring, ensure that high aquifer formation in reservoir, is avoided in perforation track always, prevent interlayer interference, improve and radially penetrate
Hole development effectiveness, increase drainage area, reach the purpose of volume increase.While to the well of radial direction perforation will be implemented, optimization storage in advance
The wellbore trajectory of interval.
Brief description of the drawings
Fig. 1 is the flow chart of a specific embodiment of the new method of the optimization radial direction perforation track of the present invention；
Fig. 2 is radial direction perforation space and floor map in a specific embodiment of the invention；
Fig. 3 is that reversely ridge type fault block oil reservoir difference wellbore trajectory influences to show on perforation in a specific embodiment of the invention
It is intended to；
Fig. 4 is the Spatial Relational Model figure for including principal element in the specific embodiment of the present invention；
Fig. 5 is day degree production curve figure in a specific embodiment of the invention；
Fig. 6 is inclined shaft radial direction well schematic diagram in a specific embodiment of the invention；
Fig. 7 is inclined shaft group well pattern figure in a specific embodiment of the invention；
Fig. 8 is inclined shaft log in a specific embodiment of the invention.
Embodiment
For enable the present invention above and other objects, features and advantages become apparent, it is cited below particularly go out preferable implementation
Example, and coordinate shown in accompanying drawing, it is described in detail below.
As shown in figure 1, Fig. 1 is the flow chart of the new method of the optimization radial direction perforation track of the present invention.
In step 101, infinitely great stratigraphic model is established.
Infinitely great stratum threedimensional model is established, X, Y, Z-direction, wherein X-direction are direction of strata direction, and Z-direction is level
Face vertical direction, Y-direction is in horizontal plane and X vertical direction.
In step 102, reservoir model is established in stratigraphic model.
Reservoir is simplified, it is believed that reservoir formation change is consistent, ignores reservoir thickness change, thick according to reservoir inclination angle
Degree establishes reservoir model.
In step 103, well locus model is established in reservoir model.
Assuming that oil well enters stratum hole deviation unchanged direction, according to hole deviation, well locus model is established in well orientation.
In step 104, radial direction perforation locus model is established on the basis of well track.
Assuming that radial direction perforation direction is vertical with well depth track, radial direction perforation direction linear extension, according to perforating site, perforation
Perforation locus model is established in orientation.
In step 105, radial direction perforation orientation and length are optimized according to spatial mathematic.
According to locus angular relationship, the relation of length of the radial direction perforation in reservoir and each variable is derived：
Wherein, inclination angle：α, tendency：σ, hole angle：β, drift azimuth：δ, perforation orientation angle：θ, shooting point is away from upper top layer
Highly：M, perforating length in target zone：L
The various parameters of purpose well are calculated critical distance of the radial direction perforation in reservoir by (formula 1), optimize perforation side
Position, wellbore trajectory is corrected, water layer and Water Flooding Layer is avoided, prevents the interference of high aquifer formation in interlayer and layer, make to penetrate in target zone
Hole length reaches design requirement, so as to realize the seepage channel for changing stratum, increases the purpose of drainage area.Simultaneously to needing footpath
Wellbore trajectory optimization is carried out in advance to perforated hole, radial direction completion effect is reached optimal.
In fig. 2 it can be seen that when wellbore trajectory and oil reservoir have angle, the perforation distance of radial direction perforation is in oil reservoir
There is limiting length；
In figure 3, found by the research to different wellbore trajectory oil well perforation length in reverse ridge fault block oil reservoir,
Along ridge vertical oil reservoir well limiting length it is most long；Next to that along ridge well and straight well；The well of wellbore trajectory reversed fault is worst.
In Fig. 4, the relation of the different parameters such as different reservoir, oil-water well, perforation is placed in spatial model, derives and find
Influence the important parameter of perforation track.
Fig. 5-Fig. 8 is to be penetrated in the specific embodiment of the present invention in field result proof diagram, foundation this method, optimization
Hole parameter, the good effect that radial direction perforation completion obtains, it was demonstrated that the correctness and practicality of this method.
The present invention has derived a set of optimization perforating length, perforation orientation by creating the Spatial Relational Model of each parameter
Formula method, and this method is applied in the implementation at scene.Compared with former radial direction perforation is not optimized, this method is used
After optimizing to perforating parameter, purpose is strong, and perforation accuracy gets a promotion, and avoids interlayer interference, reduces the wind of radial direction perforation
Danger.This method is applied to during Shengli Oil Field oil-water well radial direction perforation completion, 3 mouthfuls of oblique 65, oblique 27 wells of river 159- of 86- etc. in river
Using remarkable result is obtained in well, perforation TRAJECTORY CONTROL is successfully caused in target zone, to avoid high aquifer formation, increase former well
Aerial drainage radius and area, reduce oil flow resistance, reach effect of increasing production.
Claims (7)
1. optimize the new method of radial direction perforation track, it is characterised in that the new method of the optimization radial direction perforation track includes：
Step 1, infinitely great stratigraphic model is established；
Step 2, reservoir model is established in stratigraphic model；
Step 3, well locus model is established in reservoir model；
Step 4, radial direction perforation locus model is established on the basis of well track；
Step 5, radial direction perforation orientation and length are optimized according to spatial mathematic.
2. the new method of optimization radial direction perforation track according to claim 1, it is characterised in that in step 1, establish nothing
Big stratum threedimensional model, X, Y, Z-direction are limited, model is direction of strata direction parallel to horizontal direction, wherein X-direction, and Z-direction is
Horizontal plane direction, Y-direction is in horizontal plane and X vertical direction.
3. the new method of optimization radial direction perforation track according to claim 1, it is characterised in that in step 2, to reservoir
Simplified, it is believed that reservoir formation change is consistent, ignores reservoir thickness change, according to reservoir inclination angle, thickness establishes reservoir model.
4. the new method of optimization radial direction perforation track according to claim 1, it is characterised in that in step 3, it is assumed that oil
Well enters stratum hole deviation unchanged direction, and according to hole deviation, well locus model is established in well orientation.
5. the new method of optimization radial direction perforation track according to claim 1, it is characterised in that in step 4, it is assumed that footpath
Vertical with well depth track to perforation direction, radial direction perforation direction linear extension, according to perforating site, perforation orientation establishes perforation rail
Mark model.
6. the new method of optimization radial direction perforation track according to claim 1, it is characterised in that in steps of 5, according to sky
Between position angle relation, derive the relation of length of the radial direction perforation in reservoir and each variable：
Wherein, α --- inclination angle,
σ --- tendency,
β --- hole angle,
δ --- drift azimuth,
θ --- perforation orientation angle,
M --- shooting point away from upper headroom height,
L --- perforating length in target zone.
7. the new method of optimization radial direction perforation track according to claim 6, it is characterised in that in steps of 5, purpose
The various parameters of well calculate critical distance of the radial direction perforation in reservoir by formula 1, optimize perforation orientation, correct wellbore trajectory,
Water layer and Water Flooding Layer are avoided, prevents the interference of high aquifer formation in interlayer and layer, perforating length is reached design will
Ask, while to needing radial direction perforated hole to carry out wellbore trajectory optimization in advance, radial direction completion effect is reached optimal.
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| CN201610844126.6A CN107871023B (en) | 2016-09-23 | 2016-09-23 | Method for optimizing radial perforation trajectory |
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| CN201610844126.6A CN107871023B (en) | 2016-09-23 | 2016-09-23 | Method for optimizing radial perforation trajectory |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111287718A (en) * | 2018-12-07 | 2020-06-16 | 中国石油天然气股份有限公司 | Method and device for determining perforation parameters and storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150276978A1 (en) * | 2012-12-13 | 2015-10-01 | Landmark Graphics Corporation | System, Method and Computer Program Product For Determining Placement of Perforation Intervals Using Facies, Fluid Boundaries, Geobodies and Dynamic Fluid Properties |
| CN105484710A (en) * | 2015-12-07 | 2016-04-13 | 西南石油大学 | Method for selecting fracturing perforation orientation for inclined shaft |
-
2016
- 2016-09-23 CN CN201610844126.6A patent/CN107871023B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150276978A1 (en) * | 2012-12-13 | 2015-10-01 | Landmark Graphics Corporation | System, Method and Computer Program Product For Determining Placement of Perforation Intervals Using Facies, Fluid Boundaries, Geobodies and Dynamic Fluid Properties |
| CN105484710A (en) * | 2015-12-07 | 2016-04-13 | 西南石油大学 | Method for selecting fracturing perforation orientation for inclined shaft |
Non-Patent Citations (1)
| Title |
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| 赵春森 等: "《葡萄花油层高含水期水平井参数优化》", 《黑龙江科技学院学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111287718A (en) * | 2018-12-07 | 2020-06-16 | 中国石油天然气股份有限公司 | Method and device for determining perforation parameters and storage medium |
| CN111287718B (en) * | 2018-12-07 | 2022-05-06 | 中国石油天然气股份有限公司 | Method and device for determining perforation parameters and storage medium |
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