CN106321041B - A kind of later development method for oil reservoir exploitation - Google Patents
A kind of later development method for oil reservoir exploitation Download PDFInfo
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- CN106321041B CN106321041B CN201510364418.5A CN201510364418A CN106321041B CN 106321041 B CN106321041 B CN 106321041B CN 201510364418 A CN201510364418 A CN 201510364418A CN 106321041 B CN106321041 B CN 106321041B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/70—Combining sequestration of CO2 and exploitation of hydrocarbons by injecting CO2 or carbonated water in oil wells
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Abstract
The present invention relates to a kind of later development methods for oil reservoir exploitation, comprising: by being equipped with multiple drilling tools in formation at target locations, and the drilling tool is compartment setting；By deepening drilling well so that each equal tripping in of the drilling tool is at the oil-water interfaces into the formation at target locations；The first perforated interval on each drilling tool is blocked by capping tools, and injects liquid into each drilling tool respectively, to supplement the displacement of reservoir oil energy of the formation at target locations.This method has the advantages that the energy supplement problem for being able to solve relatively independent Crack Element.
Description
Technical field
The present invention relates to technical field of petroleum extraction more particularly to a kind of later development methods for oil reservoir exploitation.
Background technique
The exploitation of oil reservoir mostly uses greatly the mode of blowdown.The mode of the blowdown is especially suitable for slit formation
Oil reservoir.In the later period of blowdown, carry out renwing stratum energy frequently with the method taken out, this method is a kind of passively energy
Compensation process.Studies have shown that Fractured reservoir has relatively independent Crack Element and connection Crack Element, the Crack Element of connection has
The energy supplement in the external world, yield are higher, independent Crack Element, and water energy is weak, outside energy supplement is insufficient, are especially recovering the oil
In the period, aqueous variation is little, so that field output is lower.
It can be seen that being provided for the exploitation needs of the relatively independent Crack Element in Fractured reservoir a kind of for oil reservoir
The later development method of exploitation, to solve existing for the relatively independent Crack Element in Fractured reservoir, displacement of reservoir oil energy is insufficient to be asked
Topic.
Summary of the invention
In view of the above-mentioned problems, proposing a kind of later development method for oil reservoir exploitation according to the present invention, comprising: pass through
Multiple drilling tools are equipped in formation at target locations, and the drilling tool is compartment setting；By deepening drilling well so that each
The equal tripping in of drilling tool is at the oil-water interfaces into the formation at target locations；Each drilling tool is blocked by capping tools
On the first perforated interval, and liquid is injected into each drilling tool respectively, to supplement the displacement of reservoir oil energy of the formation at target locations.
In this way, when to liquid is injected at the second perforated interval, liquid can the crack through formation at target locations and penetrate into rock, play wet
The effect of rock.Meanwhile also improving the efficiency of the crack displacement of reservoir oil of the matrix in formation at target locations into formation at target locations.
Preferably, after blocking the first perforated interval on each drilling tool, it need to be at the oil reservoir bottom of the formation at target locations
Portion or the oil reservoir bottom are close to perforation at the matrix of the oil-water interfaces, to drive the crude oil in the formation at target locations to described
It is permeated in the crack of formation at target locations.
Preferably, being configured with matrix oil storage unit body in the formation at target locations, the matrix oil storage unit body is to accommodate
The crude oil and liquid form the oil-water interfaces between the crude oil and the liquid.
Preferably, first perforated interval is original oil recovery perforated interval.
Preferably, need to be equipped on each drilling tool and close to the position of the oil-water interfaces after deepening drilling well
Second perforated interval blocks each first perforated interval, and injects the liquid into each second perforated interval respectively.In this way,
It can be so that the liquid being injected into the drilling tool can be through second perforated interval directly towards the flowing underneath of oil-water interfaces.
Preferably, the method also includes when the injection liquid is unable to satisfy the displacement of reservoir oil energy of the formation at target locations,
After blocking each second perforated interval, open each first perforated interval respectively, and at each first perforated interval to
Gas is injected in the matrix oil storage unit body, to supplement the displacement of reservoir oil energy of the formation at target locations.
Preferably, the gas is migrated upwards along the crack of the formation at target locations, thus can be in the matrix oil storage unit
The pneumatic jack space for having the gas is formed on the top of body.In this way, utilizing the elastic energy due to having elastic energy in gas
Carry out the displacement of reservoir oil energy on supplementary target stratum.
Preferably, the method also includes being unable to satisfy the drive of the formation at target locations in the injection liquid or the gas
When oily energy, by blocking each second perforated interval, and to the matrix oil storage unit body at each first perforated interval
It is middle to inject vapor to heat the temperature of the crude oil.
Preferably, the capping tools are bridge plug.In this manner it is ensured that the first perforated interval or second on the drilling tool
The plugging effect of perforated interval avoids above-mentioned each drilling tool at work, and there is a phenomenon where oil leak, leak or gas leakage.
Preferably, the gas is nitrogen, carbon dioxide or natural gas.
According to the present invention, this method has the advantages that the energy supplement problem for being able to solve relatively independent Crack Element, with
And also have the advantages that quickly to improve the energy of matrix oil storage unit body using the elastic energy of gas.In addition, this method is also
Vapor is injected with passing through, and by the own temperature of vapor come heating in crude oil, reduction viscosity of crude, to improve original
Mobility and improve recovery ratio the advantages of.
Detailed description of the invention
The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.In figure:
Fig. 1 is step flow diagram of the present invention for the later development method of oil reservoir exploitation.
Fig. 2 is schematic diagram of the present invention for the embodiment one of the later development method of oil reservoir exploitation.
Fig. 3 is schematic diagram of the present invention for the embodiment two of the later development method of oil reservoir exploitation.
In the accompanying drawings, identical component uses identical appended drawing reference.Attached drawing is not according to actual scaling.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings.
As shown in Figure 1, relatively only method of the invention is particularly suitable for solving matrix slit formation carbonate stone heavy crude reservoir
The energy supplement problem of vertical Crack Element.
In embodiments herein, this method comprises:
Step S410, by formation at target locations compartment be equipped with multiple drilling tools.As increase oil production, it can be in mesh
Mark adds multiple drilling tools in stratum, and each drilling tool is worked at the same time, thus to improve oil production, improve work effect
Rate.
In embodiments herein, which can be casing or oil pipe.
Step S420 is in the current location in formation at target locations based on drilling tool, and the method by deepening drilling well makes respectively
The equal tripping in of drilling tool is at the oil-water interfaces into formation at target locations.In this way, the bottom end of each drilling tool may make to be respectively positioned on or connect
At nearly oil-water interfaces.
Step S430 blocks the first perforated interval on each drilling tool by capping tools, and respectively to each drilling tool
Middle injection liquid, to supplement the displacement of reservoir oil energy of the formation at target locations.Specifically, since each drilling tool is in non-tripping in formation at target locations
In oil-water interfaces at when, in the corresponding position of each drilling tool can open up the first perforated interval.When above-mentioned each drilling tool is equal
After tripping in is at the oil-water interfaces into formation at target locations, need on the peripheral wall close to the bottom at oil-water interfaces of each drilling tool
Open up the second perforated interval as described below.In this way, liquid can be along the spudder when injecting liquid into the drilling tool from ground
The inner wall of tool flows out from second perforated interval, and under the self gravitation effect of liquid, towards the water body below oil-water interfaces
Flowing.As a result, due to the increase of liquid, can oil-water interfaces be increased, further, also improve the interface of crude oil, thus
Play the role of supplementing the displacement of reservoir oil energy of the formation at target locations.
In embodiments herein, which can be for water or containing oil displacement assistant liquid etc..
As shown in Figures 2 and 3, in a preferred embodiment, after above-mentioned steps S430, that is, each drilling well is being blocked
It, need to be at the matrix of the oil reservoir bottom or oil reservoir bottom of formation at target locations 1 close to oil-water interfaces 5 after the first perforated interval 3 on tool 2
Perforation, so that the crude oil in the formation at target locations 1 be driven to permeate into the crack of formation at target locations.In this way, at the second perforated interval 4
Inject liquid when, liquid can the crack through formation at target locations 1 and penetrate into rock, play the role of wet rock.Meanwhile it also mentioning
The efficiency of the crack displacement of reservoir oil of the matrix into formation at target locations 1 in high formation at target locations 1.Wherein, which can be slit formation
Oil reservoir independence Crack Element.
As shown in Fig. 2, being equipped with valve 21 at the upper port of the drilling tool 2 in embodiments herein.The valve
21 setting can be played the role of controlling opening or closing for drilling tool 2.I.e. when needing to recover the oil, by opening valve
21, to realize the opening of the drilling tool 2.It, can be by closing valve 21, to realize the spudder when not needing to recover the oil
The closing of tool 2.
As shown in Figures 2 and 3, in a preferred embodiment, matrix oil storage unit body is configured in the formation at target locations 1
8, which forms oil-water interfaces 5 to accommodate crude oil 6 and liquid 7 between crude oil 6 and liquid 7.Specifically
Ground, the crude oil 8 are located at the top of liquid 7.
In a preferred embodiment, which is original oil recovery perforated interval.The original oil recovery perforated interval away from
Farther out from oil-water interfaces 5.
It in a preferred embodiment, i.e., need to be in each drilling tool 2 after deepening drilling well in above-mentioned steps S420
It above and close to the position of the oil-water interfaces 5 is equipped with the second perforated interval 4, blocks each first perforated interval 3, and respectively to each second perforation
Liquid 7 is injected in section 4.It can play the role of supplementing the displacement of reservoir oil energy of the formation at target locations 1 in this way.Second perforated interval 4 can be
Fluid injection perforated interval or water filling steam perforated interval.Specifically, which is located adjacent to the position of oil-water interfaces 5, in this way,
It can be so that the liquid being injected into the drilling tool 2 can directly be flowed towards the lower section of oil-water interfaces 5 through second perforated interval 4
It is dynamic.Further, since the liquid of 5 lower section of oil-water interfaces is increasing, to improve the position of oil-water interfaces 5.
As shown in figure 3, in a preferred embodiment, this method further includes that the liquid 7 is unable to satisfy the mesh in injection
When marking the displacement of reservoir oil energy on stratum 1, after blocking each second perforated interval 4, each first perforated interval 3 is opened respectively, and each first
Gas is injected in matrix oil storage unit body 8 at from perforated interval 3 to formation at target locations 1, with the displacement of reservoir oil energy on supplementary target stratum 1.
In a preferred embodiment, which migrates upwards along the crack of formation at target locations 1, thus can be in matrix oil storage
The pneumatic jack space 81 for having gas is formed on the top of cell cube 8.
Specifically, by way of fluid injection come when realizing oil recovery, with substantial oil along each drilling tool 2 towards returning on ground
While, a large amount of gas can be taken away, it is thereby possible to lead to the presence of degassing in formation at target locations 1.At this point, can be by dividing
Gas is not injected into each drilling tool 2, so that gas flows out from first perforated interval 3.The gas of outflow is because of Gravity Separation
Effect can migrate upwards along the crack of formation at target locations 1, and migrate to the pneumatic jack space 81 of matrix oil storage unit body 8.In this way, by
There is elastic energy in gas, using the elastic energy come the displacement of reservoir oil energy on supplementary target stratum 1.I.e. when in pneumatic jack space 81
In when having gas, certain air pressure can be generated in the pneumatic jack space 81.Under the action of gas pressure, so that the interface of oil and gas
It moves down.However, due to the space of matrix oil storage unit body 8 be it is certain, occupy certain space (gas in the above-mentioned gas injected
When between head space 81), pneumatic jack energy can be made to improve, so that the displacement of reservoir oil for formation at target locations 1 provides displacement of reservoir oil energy.
After having injected liquid or gas injection in above-mentioned formation at target locations 1, returned in crude oil meeting constantly, while upper return,
Certain liquids and gases can be taken away.In that way it is possible to will affect the pressure balance in formation at target locations 1.It is then desired to close each brill
2 a period of time of well tool, with the pressure in balancing objective stratum 1.It avoids since injection liquid or gas are too fast causing that water occurs
It alters or the drawbacks of has channeling.
In a preferred embodiment, the gas of above-mentioned injection can be nitrogen, carbon dioxide or natural gas etc..
As shown in figure 3, in a preferred embodiment, this method further includes being unable to satisfy this in injection liquid or gas
When the displacement of reservoir oil energy of formation at target locations 1, by blocking each second perforated interval 4, and to matrix oil storage unit at each first perforated interval 3
Vapor is injected in body 8, with the temperature of heating in crude oil.Specifically, when crude oil constantly returns to ground from the drilling tool 2
When, part crude oil may exist on the inner wall of drilling tool 2 or remain in the crack of formation at target locations 1.It is thereby possible to because
The drawbacks of toughness of crude oil is larger, leads to the mobility for slowing down crude oil.Therefore it can be at the first perforated interval 3 into formation at target locations 1
Matrix oil storage unit body 8 in inject vapor.Since the vapor itself injected has certain heat, Ke Yiqi
To the effect of heating in crude oil.After crude oil is heated, reduce the viscosity of the crude oil, to improve
The mobility of crude oil.Further, it facilitates crude oil production, improve crude oil yield.
In embodiments herein, the temperature range of the vapor is more than or equal to 100 degree and to be less than or equal to 320
Degree.In this way, preferably heating in crude oil can be played the role of.In embodiments herein, which can be bridge plug.
In this manner it is ensured that the plugging effect of the first perforated interval 3 or the second perforated interval 4 on the drilling tool 2, avoids above-mentioned each drilling well
At work, there is a phenomenon where oil leak, leak or gas leakage for tool 2.
In conclusion the method in the present invention has the excellent of the energy supplement problem for being able to solve relatively independent Crack Element
Point, and also have the advantages that quickly to improve the energy of matrix oil storage unit body using the elastic energy of gas.In addition, the party
Method also has by injecting vapor, and sticky crude oil is heated by itself thermal energy of vapor, to improve original
The advantages of mobility and raising recovery ratio.
Although by reference to preferred embodiment, invention has been described, the case where not departing from the scope of the present invention
Under, various improvement can be carried out to it and can replace component therein with equivalent.Especially, as long as there is no structures to rush
Prominent, items technical characteristic mentioned in the various embodiments can be combined in any way.The invention is not limited to texts
Disclosed in specific embodiment, but include all technical solutions falling within the scope of the claims.
Claims (5)
1. a kind of later development method for oil reservoir exploitation, comprising:
By in formation at target locations compartment be equipped with multiple drilling tools；
By deepening drilling well so that each equal tripping in of the drilling tool is at the oil-water interfaces into the formation at target locations；
The first perforated interval on each drilling tool is blocked by capping tools, and is injected respectively into each drilling tool
Liquid, to supplement the displacement of reservoir oil energy of the formation at target locations；It, need to be in institute after blocking the first perforated interval on each drilling tool
The oil reservoir bottom or the oil reservoir bottom for stating formation at target locations are close to perforation at the matrix of the oil-water interfaces, to drive the target
Crude oil in stratum is permeated into the crack of the formation at target locations；
Matrix oil storage unit body is configured in the formation at target locations, the matrix oil storage unit body is to accommodate the crude oil and liquid
Body forms the oil-water interfaces between the crude oil and the liquid；
After deepening drilling well, it need to be equipped with the second perforated interval on each drilling tool and close to the position of the oil-water interfaces,
Each first perforated interval is blocked, and injects the liquid into each second perforated interval respectively；
The method also includes passing through and block each institute when the injection liquid is unable to satisfy the displacement of reservoir oil energy of the formation at target locations
After stating the second perforated interval, each first perforated interval is opened respectively, and to the matrix oil storage at each first perforated interval
Gas is injected in cell cube, to supplement the displacement of reservoir oil energy of the formation at target locations；
The method also includes leading to when injecting the liquid or the gas is unable to satisfy the displacement of reservoir oil energy of the formation at target locations
It crosses and blocks each second perforated interval, and inject vapor into the matrix oil storage unit body at each first perforated interval
To heat the temperature of the crude oil.
2. the later development method according to claim 1 for oil reservoir exploitation, which is characterized in that first perforated interval
For original oil recovery perforated interval.
3. the later development method according to claim 1 for oil reservoir exploitation, which is characterized in that the gas is described in
The crack of formation at target locations is migrated upwards, so that the pneumatic jack for having the gas can be formed at the top of the matrix oil storage unit body
Space.
4. the later development method according to claim 1 for oil reservoir exploitation, which is characterized in that the capping tools are
Bridge plug.
5. the later development method according to claim 1 for oil reservoir exploitation, which is characterized in that the gas is nitrogen
Gas, carbon dioxide or natural gas.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1834403A (en) * | 2006-04-17 | 2006-09-20 | 尤尼斯油气技术（中国）有限公司 | Hot air filling balance oil recovery technique 'zhanqian' mountain oil reservoir |
| CN101793138A (en) * | 2010-03-10 | 2010-08-04 | 大庆油田有限责任公司 | Hydrocyclone and screw pump combined downhole oil-water separation method |
| CN101942984A (en) * | 2010-01-27 | 2011-01-12 | 中国石油化工股份有限公司 | Fracture-cave type carbonate reservoir waterflooding oil replacement recovery method |
| RU2431744C1 (en) * | 2010-04-16 | 2011-10-20 | Открытое акционерное общество "Татнефть" имени В.Д. Шашина | Procedure for extraction of high viscous oil and bitumen with application of horizontal producing and horizontal-inclined wells |
| CN103742124A (en) * | 2013-12-28 | 2014-04-23 | 中国石油天然气股份有限公司 | Method for re-separating produced liquid of underground oil-water separation same-well injection and production well |
-
2015
- 2015-06-26 CN CN201510364418.5A patent/CN106321041B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1834403A (en) * | 2006-04-17 | 2006-09-20 | 尤尼斯油气技术（中国）有限公司 | Hot air filling balance oil recovery technique 'zhanqian' mountain oil reservoir |
| CN101942984A (en) * | 2010-01-27 | 2011-01-12 | 中国石油化工股份有限公司 | Fracture-cave type carbonate reservoir waterflooding oil replacement recovery method |
| CN101793138A (en) * | 2010-03-10 | 2010-08-04 | 大庆油田有限责任公司 | Hydrocyclone and screw pump combined downhole oil-water separation method |
| RU2431744C1 (en) * | 2010-04-16 | 2011-10-20 | Открытое акционерное общество "Татнефть" имени В.Д. Шашина | Procedure for extraction of high viscous oil and bitumen with application of horizontal producing and horizontal-inclined wells |
| CN103742124A (en) * | 2013-12-28 | 2014-04-23 | 中国石油天然气股份有限公司 | Method for re-separating produced liquid of underground oil-water separation same-well injection and production well |
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