CN106437631B - Oil reservoir exploitation method and device thereof - Google Patents
Oil reservoir exploitation method and device thereof Download PDFInfo
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- CN106437631B CN106437631B CN201610819360.3A CN201610819360A CN106437631B CN 106437631 B CN106437631 B CN 106437631B CN 201610819360 A CN201610819360 A CN 201610819360A CN 106437631 B CN106437631 B CN 106437631B
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000004576 sand Substances 0.000 claims abstract description 160
- 238000011084 recovery Methods 0.000 claims abstract description 21
- 238000007493 shaping process Methods 0.000 claims description 17
- 208000035126 Facies Diseases 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
- 238000004062 sedimentation Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 75
- 238000009826 distribution Methods 0.000 description 18
- 238000010586 diagram Methods 0.000 description 6
- 238000000151 deposition Methods 0.000 description 5
- 230000008021 deposition Effects 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 235000007926 Craterellus fallax Nutrition 0.000 description 1
- 240000007175 Datura inoxia Species 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000013213 extrapolation Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/30—Specific pattern of wells, e.g. optimising the spacing of wells
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
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- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses an oil reservoir exploitation method and an oil reservoir exploitation device. The method comprises the following steps: selecting a plurality of single sand bodies which can be exploited from the reservoir to be exploited; carrying out sedimentation year division on each single sand body in the plurality of mineable single sand bodies to obtain a first division result; according to the first division result, dividing the plurality of single sand bodies into a plurality of geological data bodies which belong to the same formation period and are located in the same river channel to obtain a second division result; and deploying an oil production well in the oil reservoir to be exploited according to the second division result so as to realize exploitation of residual oil in the later stage of the oil reservoir and achieve the purposes of improving the reserve utilization degree of the oil reservoir and improving the block recovery ratio.
Description
Technical field
The present invention relates to petroleum exploration field more particularly to oil reservoir recovery method and its devices.
Background technique
The sandstone reservoir of river parfacies and distributary channel microfacies is particularly important petroleum reservoir type, such reservoir
Petroleum reserves accounted for the half or so of current developed field mining-employed reserves.Not with such reservoir oilfield exploration work
Disconnected to go deep into, many oil fields have entered ultra-high water-containing mining phase, and the remaining oil distribution in reservoir becomes complex, oil extraction operation
Difficulty it is increasing.
For the oil production for how effectively improving this kind of reservoir, currently no effective solution has been proposed.
Summary of the invention
In view of the above-mentioned problems, the purpose of the present invention is to provide oil reservoir recovery method and its device, to realize the oil reservoir later period
The exploitation of remaining oil.
To achieve the goals above, a kind of oil reservoir recovery method provided by the invention, this method comprises:
Multiple single sand body is exploited from wait exploit to choose in oil reservoir；
Each single sand body progress the sedimentary age division in single sand body is exploited to the multiple, obtains the first division result；
According to first division result, by it is the multiple exploit single sand body and be divided into multiple belong to same shaping age
And it is located at the geological data volume in same river, and obtained multiple geological data volumes will be divided as the second division result；
Producing well is disposed in oil reservoir wait exploit described according to second division result.
Further, multiple single sand body is exploited from wait exploit to choose in oil reservoir, comprising:
Single sand body of the thickness greater than preset threshold is chosen in oil reservoir as the first single sand body wait exploit from described；
Selection meets the single sand body that default exploitation requires from first single sand body, as can exploit single sand body.
Further, the preset threshold is 5 meters.
Further, the default exploitation requires to include at least one of: preset well logging form, preset electrically spy
Sign, preset oiliness and preset type of sedimentary facies.
Further, each single sand body progress the sedimentary age division in single sand body is exploited to the multiple, obtains first
Division result, comprising:
Establish the backbone well profile of the oil reservoir to be exploited；
Whole district's connection well comparison is carried out to the oil reservoir to be exploited according to the backbone well profile, obtains the multiple exploit
The development intensity and stacked situation of each single sand body in single sand body；
The sedimentary age division is carried out to each single sand body according to the development intensity of each single sand body and stacked situation,
Obtain first division result.
Further, according to first division result, the multiple single sand body of exploiting is divided into multiple belong to together
One shaping age and the geological data volume for being located at same river, comprising:
Establish the seismic reflection template of the oil reservoir to be exploited；
It is obtained according to the seismic reflection template and the multiple exploits river belonging to each single sand body in single sand body；
River belonging to each single sand body in single sand body and first division result are exploited according to the multiple, it will
The multiple single sand body of exploiting is divided into multiple geological data volumes for belonging to same shaping age and being located at same river.
Further, the seismic reflection template includes at least one of: chronological change phase, age seismic facies and wave
Shape feature.
Further, producing well is disposed wait exploit described according to second division result in oil reservoir, comprising:
The location information wait exploit remaining oil in oil reservoir is determined according to second division result.
According to the location information wait exploit the remaining oil in oil reservoir, producing well is disposed in oil reservoir wait exploit described.
Further, the river includes the sedimentary sand bodies being overlapped mutually in the period that is differently formed.
Further, the river is mostly braided stream river or delta distributary channel.
The present invention also provides a kind of oil reservoir quarrying apparatus, comprising:
Acquiring unit, for multiple exploiting single sand body from wait exploit to choose in oil reservoir；
First processing units are exploited each single sand body progress the sedimentary age division in single sand body to the multiple, are obtained
First division result；
The second processing unit, for according to first division result, by it is the multiple exploit single sand body be divided into it is more
A geological data volume for belonging to same shaping age and being located at same river, and will divide obtained multiple geological data volumes as
Second division result；
Analytical unit, for disposing producing well in oil reservoir wait exploit described according to second division result.
The present invention is directed to the exploitation of oil reservoir late residual oil, and multiple bases for exploiting single sand body are chosen in oil reservoir from wait exploit
On plinth, each single sand body progress the sedimentary age division in single sand body is exploited to the multiple, obtains the first division result；Then
Further according to first division result, by it is the multiple exploit single sand body and be divided into multiple belong to same shaping age and be located at
The geological data volume in same river obtains the second division result.More rough oil reservoir divides in compared with the existing technology, at this
In second division result, oil reservoir to be exploited is subdivided into the single sand body for belonging to the period of being differently formed and river, and will be belonged to same
The single sand body in one shaping age and river is divided into same geological data volume, so can more accurately treat exploitation oil reservoir into
Row divides, and disposes producing well according in the result for treating the finer division that exploitation oil reservoir carries out, and then reaches raising oil
The purpose hidden reserves exploitation degree, improve block recovery ratio.
Detailed description of the invention
The figures above explanation:
Fig. 1 is the flow chart for the oil reservoir recovery method that the embodiment of the present invention provides；
Fig. 2 is seismic reflection template schematic diagram in the embodiment of the present invention；
Fig. 3 is the form schematic diagram of the single sand body provided in the embodiment of the present invention；
Fig. 4 is the form schematic diagram of the single sand body provided in the embodiment of the present invention；
Fig. 5 is the division schematic diagram of single sand body Body different in the embodiment of the present invention；
Fig. 6 is the division schematic diagram of single sand body Body different in the embodiment of the present invention；
Fig. 7 is the distribution schematic diagram of Body1 to Body5 in the embodiment of the present invention；
Fig. 8 is single sand body Body body distribution map in the embodiment of the present invention.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in example is applied, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described implementation
Example is only some embodiments of the present application, instead of all the embodiments.Based on the embodiment in the application, the common skill in this field
Art personnel every other embodiment obtained without making creative work, all should belong to protection of the present invention
Range.
Single sand body is the relatively independent oil storage unit of one of reservoir.Because of structure, thickness between different single sand bodies
And the type of sedimentary micro is different, so that oil reserve, oil storage position and exploitation difficulty in different single sand bodies are all
It is different.Phase after mining also stores the crude oil not being produced largely in the single sand body of part.Therefore, to the understanding journey of single sand body
Degree and fine divide largely play an important role to the prediction of remaining oil and taping the latent power.
Single sand body has separability in the longitudinal direction, can be subdivided into different deposition lists according to the type of deposition in the longitudinal direction
Member, different sedimentation units represent different shaping ages.Meanwhile horizontally same sedimentation unit has certain distribution rule
Mould.It is single to depositing belonging to it currently, generally only spatially depict the distribution of single sand body to the research method of single sand body
The type and forming process of member lack certain understanding, and the formation phase of sedimentation unit cannot be distinguished.Present invention is generally directed to upper
Deficiency is stated, the type of sedimentation unit and formation phase are applied to simultaneously in single sand body division, and then implement the distribution of single sand body
Range and formation phase dispose oil well according to these data in the exploitation later period of remaining oil to realize opening for late residual oil
It adopts.It is now for viscous crude vapour drives development block by certain oil field block, in the later period of oil field development, thick-layer single sand body lower part is dynamic
Poor with degree, remaining oil distribution is uneven, therefore, is conducive to determine the distribution of thick sand bodies using the oil reservoir recovery method,
More reservoir informations are provided to further taping the latent power.
Specifically, the invention discloses a kind of oil reservoir recovery method, this method may include: shown in referring to Fig.1
S1: multiple single sand body is exploited from wait exploit to choose in oil reservoir；
In this step, multiple early periods for exploiting single sand body are being chosen in oil reservoir from wait exploit, for example, can be by 5 meters
It is defined as the lower threshold of single sand body thickness.This is primarily due to inventor and finds longitudinal upper single sand body physical property thickness when greater than 5
Meter Hou Hui changes.Meanwhile in conjunction with geology sedimentary facies research as a result, oil when single sand body thickness is greater than 5 meters, in the sand body
Concentration is compared in layer development, therefore, 5 meters can be defined as the lower threshold of single sand body thickness.It, can be with when specific implementation
Preferential to exclude single sand body of the single sand body thickness less than 5 meters, only the single sand body using thickness more than or equal to 5 meters is as the target studied,
Be conducive to the excavation and exploitation to remaining oil in turn.
Referring to table 1, in addition to according to 5 meters for lower limit threshold values other than, can also according in table 1 well logging form, electrical property feature, contain
Oiliness and the parameter of deposition properties equivalent are chosen and multiple exploit single sand body, that is, select to meet the single sand body of 1 conditional of table as
Research object.
Table 1
S2: each single sand body progress the sedimentary age division in single sand body is exploited to multiple, obtains the first division result；
In this step, to it is multiple exploit that each single sand body carries out the sedimentary age division in single sand body when, Ke Yixian
Determination can exploit the developmental state of single sand body.Specifically, the early period of single sand body developmental state can be exploited in determination, first in oil reservoir
Backbone well profile is established in region.Wherein, backbone well is exactly that brill chance oil reservoir is more, is layered more careful well.On such well
The data of single sand body can determine other similar wells with such well compared with horn of plenty for reference, then connection bones more as far as possible
Dry-well establishes connection well profile, the standard as fine Strata Comparison.
More specifically, backbone well can preferably take following principle:
(1) sealed coring well of abundant information, it is substantially all it can be assumed that for layering backbone well；
(2) well for drilling target oil reservoir whole layer position is selected to be layered backbone well；
(3) the biggish development well of well spacing density is chosen as layering backbone well；
(4) simple structure of present position, tomography are few；
(5) deposition characteristics of log reflection are obvious.
It is important to note, however, that several principles cited in this are merely to be better described the present invention, in reality
When border is realized, other backbone well selection principles can also be taken, the application comparison is not construed as limiting.
It include the developmental state of single sand body in tetra- kinds of backbone wells of a, b, c, d referring to Fig. 2, in the figure.It is then possible to pass through figure
In each backbone well fine correlation is carried out to stratum, then carry out whole district's comparison according to comparing result extrapolation, and then can determine
The developmental state of most of determined single sand bodies for exploiting single sand body in one oil reservoir.
Further, the developmental state of single sand body can be summarized on the basis of the whole district joins well comparison.Wherein, it develops
Situation refers to the thickness of single sand body, the unit of distribution, the degree of concentration and stacked situation etc..According to these above-mentioned developmental states,
Each single sand body progress the sedimentary age division in single sand body can be exploited to multiple.In view of the identical single sand body of the sedimentary age
Its development degree and stacked situation are essentially identical, therefore, the identical single sand body of the sedimentary age can be divided to same number
According to body, and then obtain the first division result.
S3: according to the first division result, by it is multiple exploit single sand body and be divided into multiple belong to same shaping age and position
In the geological data volume of same distributary channel, and obtained multiple geological data volumes will be divided as the second division result.
In this step, on the basis of the first division result, then the single sand body by summarizing different geologic features is right
Chronological change phase, seismic facies and the wave character (referring to shown in Fig. 2) answered, as standard, establish seismic reflection template.So
Afterwards, referring to the seismic reflection template established, specify the distribution of single sand body (referring to shown in Fig. 3)；Then on connection well profile
Based on seismic profile, single sand body longitudinally superposition form is sketched the contours, the contact relation between single sand body is implemented, determines single sand body
Form (referring to shown in Fig. 4).
I.e., it is possible to determine to be differently formed period and difference according to actually determined single sand body form and developmental state
The single sand body of distributary channel.It wherein, include the sedimentary sand bodies being overlapped mutually in the period that is differently formed in distributary channel,
It may include multiple single sand bodies in sedimentary sand bodies.It is further for convenience to divide, it can be by shaping age and affiliated underwater
The identical single sand body of distributary channel is defined as same single sand body Body body.The name of single sand body Body body does not contain particularly
Justice is intended merely to that the second division result is facilitated to do the cell cube for more specifically dividing and defining.Shown in referring to figure 5 and figure 6, figure
In there is single sand body Body1 and single sand body Body2.Wherein, the shaping age of single sand body Body1 and single sand body Body2 and institute
It is different to belong to distributary channel.
Referring to shown in Fig. 7, the distribution map of the single sand body of Body1 to Body5 is labelled in the figure.In tree-shaped distribution in figure
Strip is delta front sub-facies distributary channel, it can be seen that different single sand body Body bodies belongs to the underwater of not same period time
Distributary channel.Distributary channel is exactly the region for being configured producing well the later period and recovering the oil.
Point-line-face drawing thinking can be used in target block, according to determining single sand body developmental state, then root
According to single sand body longitudinal direction form and stacked rule, and combine choose moved towards along sand body and perpendicular to sand body trend backbone section and
The whole district joins well profile, and single sand body Body body, the continuity of predictability analysis single sand body body body, geometric form are tracked out on section
State and inter-well boundary, and segment out early, late formation phase.
It is tracked according to single sand body section as a result, a plurality of Profile Correlation research within the scope of the whole district, implements different single sand bodies
The distribution of Body body.The tracking of single sand body Body body is realized in the plane, the vertical of the not same period secondary single sand body Body body of sketching out
Cross direction profiles feature and plane distribution mode obtain single sand body flat distribution map namely the second division result as shown in Figure 8.
S4: horizontal well is being disposed wait exploit according to the second division result in oil reservoir；
Wherein, the flat distribution map of the second division result as shown in Figure 8, the deeper region of color is thick sand bodies in figure
The area of development.During remaining oil exploitation, a certain similar single sand body Body body can be selected as oil extraction
Region.Again as shown in connection with fig. 7, each single sand body Body body just represents same phase distributary channel in figure.River is exactly
Therefore original oil recovery region is more subdivided into different underwater shuntings according to different single sand body Body bodies by the region of oil recovery
Then river recovers the oil for these new determining single sand bodies.The area of single sand body body body distribution is exactly the area developed
In conjunction with remaining oil distribution, and then the regional deployment horizontal well that can be circled on plan view, to realize oil reservoir late residual oil
Exploitation.
In addition, it is the underwater distributary river in braided stream river or delta that method provided by the invention, which can be applicable to river,
Road.
The present invention is directed to the exploitation of oil reservoir late residual oil, and multiple bases for exploiting single sand body are chosen in oil reservoir from wait exploit
On plinth, each single sand body progress the sedimentary age division in single sand body is exploited to the multiple, obtains the first division result；Then
Further according to first division result, by it is the multiple exploit single sand body and be divided into multiple belong to same shaping age and be located at
The geological data volume in same river obtains the second division result.More rough oil reservoir divides in compared with the existing technology, at this
In second division result, oil reservoir to be exploited is subdivided into the single sand body for belonging to the period of being differently formed and river, and will be belonged to same
The single sand body in one shaping age and river is divided into same geological data volume, so can more accurately treat exploitation oil reservoir into
Row divides, and disposes producing well according in the result for treating the finer division that exploitation oil reservoir carries out, and then reaches raising oil
The purpose hidden reserves exploitation degree, improve block recovery ratio.
The invention also discloses a kind of oil reservoir quarrying apparatus, comprising: acquiring unit, for from wait exploit in oil reservoir choose it is more
It is a to exploit single sand body；First processing units exploit each single sand body progress the sedimentary age stroke in single sand body to the multiple
Point, obtain the first division result；The second processing unit, for exploiting list for the multiple according to first division result
Sand body be divided into it is multiple belong to same shaping age and be located at same river geological data volumes, and by divide obtain multiplely
Matter data volume is as the second division result；Analytical unit, for according to second division result described wait exploit in oil reservoir
Dispose producing well.
It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouch
It states, many embodiments and many applications except provided example all will be aobvious and easy for a person skilled in the art
See.Therefore, the range of this introduction should not be determined referring to foregoing description, but should referring to appended claims and this
The full scope of the equivalent that a little claims are possessed determines.For comprehensive purpose, all articles and with reference to including special
The disclosure of benefit application and bulletin is all by reference to being incorporated herein.Theme disclosed herein is omitted in preceding claims
Any aspect is not intended to abandon the body matter, also should not be considered as inventor the theme is not thought of as it is disclosed
A part of subject matter.
Claims (10)
1. a kind of oil reservoir recovery method characterized by comprising
Multiple single sand body is exploited from wait exploit to choose in oil reservoir；
Each single sand body progress the sedimentary age division in single sand body is exploited to the multiple, obtains the first division result；
According to first division result, by it is the multiple exploit single sand body and be divided into multiple belong to same shaping age and position
Geological data volume in same river, and obtained multiple geological data volumes will be divided as the second division result；
Producing well is disposed in oil reservoir wait exploit described according to second division result；
Wherein, each single sand body progress the sedimentary age division in single sand body is exploited to the multiple, obtains the first division result,
Include:
Establish the backbone well profile of the oil reservoir to be exploited；
Whole district's connection well comparison is carried out to the oil reservoir to be exploited according to the backbone well profile, acquisition is the multiple to exploit single sand
The development intensity and stacked situation of each single sand body in body；
The sedimentary age division is carried out to each single sand body according to the development intensity of each single sand body and stacked situation, is obtained
First division result.
2. oil reservoir recovery method according to claim 1, which is characterized in that choose multiple exploit in oil reservoir from wait exploit
Single sand body, comprising:
Single sand body of the thickness greater than preset threshold is chosen in oil reservoir as the first single sand body wait exploit from described；
Selection meets the single sand body that default exploitation requires from first single sand body, as can exploit single sand body.
3. oil reservoir recovery method according to claim 2, which is characterized in that the preset threshold is 5 meters.
4. oil reservoir recovery method according to claim 2, which is characterized in that it is described it is default exploitation require to include it is following at least
One of: preset well logging form, preset electrical property feature, preset oiliness and preset type of sedimentary facies.
5. oil reservoir recovery method according to claim 1, which is characterized in that, will be described according to first division result
Multiple single sand bodies of exploiting are divided into multiple geological data volumes for belonging to same shaping age and being located at same river, comprising:
Establish the seismic reflection template of the oil reservoir to be exploited；
It is obtained according to the seismic reflection template and the multiple exploits river belonging to each single sand body in single sand body；
River pattern belonging to each single sand body in single sand body and first division result are exploited according to the multiple, it will
The multiple single sand body of exploiting is divided into multiple geological data volumes for belonging to same shaping age and being located at same river.
6. oil reservoir recovery method according to claim 5, which is characterized in that the seismic reflection template include it is following at least
One of: chronological change phase, age seismic facies and wave character.
7. oil reservoir recovery method according to claim 1, which is characterized in that according to second division result it is described to
Producing well is disposed in exploitation oil reservoir, comprising:
The location information wait exploit remaining oil in oil reservoir is determined according to second division result；
According to the location information wait exploit the remaining oil in oil reservoir, producing well is disposed in oil reservoir wait exploit described.
8. oil reservoir recovery method according to claim 1, which is characterized in that the river includes the phase in the period that is differently formed
The sedimentary sand bodies being mutually superimposed.
9. oil reservoir recovery method according to claim 1, which is characterized in that the river is mostly braided stream river or triangle
Continent distributary channel.
10. a kind of oil reservoir quarrying apparatus characterized by comprising
Acquiring unit, for multiple exploiting single sand body from wait exploit to choose in oil reservoir；
First processing units exploit each single sand body progress the sedimentary age division in single sand body to the multiple, obtain first
Division result；
The second processing unit, for according to first division result, the multiple single sand body of exploiting to be divided into multiple categories
In same shaping age and positioned at the geological data volume in same river, and obtained multiple geological data volumes will be divided as second
Division result；
Analytical unit, for disposing producing well in oil reservoir wait exploit described according to second division result；
Wherein, the first processing units are specifically used for establishing the backbone well profile of the oil reservoir to be exploited；According to the backbone
Well profile carries out whole district's connection well comparison to the oil reservoir to be exploited, and acquisition is the multiple to exploit each single sand body in single sand body
Develop intensity and stacked situation；According to the development intensity of each single sand body and stacked situation to each single sand body
The sedimentary age division is carried out, first division result is obtained.
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| 三角洲平原复合分流河道内部单砂体划分——以扶余油田中区南部泉头组四段为例;封从军等;《石油与天然气地质》;20120228;第33卷(第1期);第77-83页 |
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