CN110130881A - Method for rapidly identifying water plugging position of oil field horizontal well - Google Patents
Method for rapidly identifying water plugging position of oil field horizontal well Download PDFInfo
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- CN110130881A CN110130881A CN201910314148.5A CN201910314148A CN110130881A CN 110130881 A CN110130881 A CN 110130881A CN 201910314148 A CN201910314148 A CN 201910314148A CN 110130881 A CN110130881 A CN 110130881A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 214
- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000002347 injection Methods 0.000 claims abstract description 42
- 239000007924 injection Substances 0.000 claims abstract description 42
- 238000011161 development Methods 0.000 claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 claims abstract description 19
- 239000003129 oil well Substances 0.000 claims abstract description 10
- 230000009466 transformation Effects 0.000 claims abstract description 7
- 230000004044 response Effects 0.000 claims abstract description 6
- 235000020681 well water Nutrition 0.000 claims description 30
- 239000002349 well water Substances 0.000 claims description 30
- 239000007788 liquid Substances 0.000 claims description 15
- 238000009826 distribution Methods 0.000 claims description 10
- 238000000151 deposition Methods 0.000 claims description 9
- 230000035699 permeability Effects 0.000 claims description 7
- 238000004587 chromatography analysis Methods 0.000 claims description 6
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 5
- 239000007832 Na2SO4 Substances 0.000 claims description 4
- 238000001764 infiltration Methods 0.000 claims 1
- 230000008595 infiltration Effects 0.000 claims 1
- 230000000704 physical effect Effects 0.000 abstract description 3
- 230000003068 static effect Effects 0.000 abstract description 2
- 150000003839 salts Chemical class 0.000 abstract 1
- 239000007921 spray Substances 0.000 abstract 1
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 230000018109 developmental process Effects 0.000 description 15
- 230000000875 corresponding effect Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 208000013201 Stress fracture Diseases 0.000 description 1
- 235000011148 calcium chloride Nutrition 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000700 radioactive tracer Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
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- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/10—Locating fluid leaks, intrusions or movements
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Mining & Mineral Resources (AREA)
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- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a method for quickly judging and identifying the water plugging position of an oil field horizontal well, which comprises the following steps of firstly, determining the water breakthrough type according to the salt-containing data of a water breakthrough; secondly, collecting physical properties and production dynamic data of an oil well reservoir, and determining the lower limit of oil outlet of a well in the stratum and the development condition of a seam network of an injection well; then, the water well in the stratum analyzes the plane oil-containing condition by utilizing the lower limit standard of oil outlet, qualitatively judges the water outlet end by combining the actual production condition of the surrounding oil well, and determines the water outlet end by the dynamic response relation of the water well; finally, comprehensively utilizing the judged water outlet end, and determining the water outlet conditions of different layer sections to determine the water outlet section by combining the chromatographic value of each spray point of a single well; and the water plugging position is determined by combining the pressure and the transformation position. The method starts with the existing dynamic and static data of the horizontal well, quickly identifies the water layer section, and further adopts the measures of water control and oil stabilization; meanwhile, the method is suitable for two water-meeting types of the water-meeting injected water and the water-meeting stratum water.
Description
Technical field
The invention belongs to oilwell water shutoff fields, are related to a kind of oilfield horizontal well water blockoff position quick recognition method.
Background technique
The casing programme of horizontal well is different from straight well, it is made to be easier to the phenomenon that big volume production water, water occur in oil recovery process
Horizontal well can bring about consumption stratum energy once being discharged, and reduce oil production, reduce oil well pump efficiency, aggravate the corrosion of pipeline, equipment
And fouling, a series of problems, such as increasing the load of oil-water process system.The key of water plugging of horizontal well is to be quickly found out out water level
It sets.
Oil field High water cut horizontal well inflow direction is surveyed mainly by water injection well dynamic authentication, dynamic monitoring, production profile at present
The means of examination determine.Water injection well dynamic authentication is to judge water side by changing water injection well working system tracking well water
To, but since horizontal well pair is answered, water injection well is more, proving period is longer, is only applicable to Fractured water breakthrough horizontal well.Dynamic monitoring side
Method mainly utilizes waterflood front test, tracer monitoring to judge inflow direction, but by reservoir micro-fractures development and heterogeneity
It influences, seam gateway system complexity, inflow direction is caused to judge that difficulty is big, the period is long, at high cost.Producing profile testing is to utilize external force
Produced fluid cross section tester device is delivered to perforated interval by oil jacket annulus by (cable or coiled tubing, crawl device etc.), in pumping unit
Do not stop using turbine flowmeter, water holdup tool real-time monitoring flow, aqueous in the case of taking out, but complex process, testing cost are high.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, it is quick to provide a kind of oilfield horizontal well water blockoff position
Sentence knowledge method.
In order to achieve the above objectives, the present invention is achieved by the following scheme:
A kind of oilfield horizontal well water blockoff position quick recognition method, comprising the following steps:
Step 1: according to the water type after oilfield horizontal well water breakthrough, determining water breakthrough type；
Step 2: when water breakthrough type is to see water flooding, determining the fuel-displaced lower limit of oilfield horizontal well；When water breakthrough type is to see
When injecting water, the seam net development condition of oilfield horizontal well is determined；
Step 3: practical raw according to the fuel-displaced lower limit and surrounding oil well of oilfield horizontal well when water breakthrough type is to see water flooding
Situation is produced, determines the water outlet of oilfield horizontal well；When water breakthrough type is to see injection water, developed by the seam net of oilfield horizontal well
Situation and dynamic response relationship, determine the water outlet of oilfield horizontal well；
Step 4: according to the chromatographic parameter value of each specking in water outlet, determining the water exit end of oilfield horizontal well；
Step 5: according to the water exit end of oilfield horizontal well, determining the water blockoff position of oilfield horizontal well.
A further improvement of the present invention lies in that:
Step 1 method particularly includes:
According to the water type after oilfield horizontal well water breakthrough, water breakthrough type is determined；Water type is CaCl after oilfield horizontal well water breakthrough2
When, water breakthrough type is to see water flooding；Water type after oilfield horizontal well water breakthrough is Na2SO4When, water breakthrough type is to see injection water.
The fuel-displaced lower limit of oilfield horizontal well is determined in step 2 method particularly includes:
According to the reservoir properties of oilfield horizontal well and Production development data, draw the resistance of oilfield horizontal well, interval transit time,
Resistance, interval transit time, permeability and the oil reservoir of permeability and core intersection and aqueous relational graph and oilfield horizontal well
The relational graph of thickness and production capacity determines the fuel-displaced lower limit of oilfield horizontal well.
The seam net development condition of oilfield horizontal well is determined in step 2 method particularly includes:
The corresponding relationship of long with depositing the liquid measure of pressure-break of oilfield horizontal well is obtained by underground microseism, and passes through measurement
Ground liquid measure of depositing to obtain pressure-break long；Length is stitched according to transformation and draws seam net distribution map, is sentenced according to seam net distribution map and is known oil field level
The water injection well of well is exchanged information；The seam net development condition for determining oilfield horizontal well of exchanging information with water injection well is grown according to pressure-break.
Dynamic response relationship in step 3 is the aqueous and Advance Water Injection amount of oilfield horizontal well, water injection intensity and adds up
The relationship of water filling.
Step 4 method particularly includes:
According to the specking chromatography value of oilfield horizontal well water outlet, the water exit end of oilfield horizontal well is determined；When water breakthrough type is
When seeing water flooding, the region that the specking chromatographic parameter value of oilfield horizontal well is lower than standard value is the water exit end of oilfield horizontal well；When
Water breakthrough type is when seeing injection water, and the region that the specking chromatographic parameter value of oilfield horizontal well is higher than standard value is oilfield horizontal well
Water exit end.
Step 5 method particularly includes:
It is pre- between water blockoff position and water exit end when water breakthrough type is to see water flooding according to the water exit end of oilfield horizontal well
50m is stayed, determines the water blockoff position of oilfield horizontal well；It is pre- between water blockoff position and water exit end when water breakthrough type is to see injection water
100m is stayed, determines the water blockoff position of oilfield horizontal well.
Compared with prior art, the invention has the following advantages:
Start with by using existing oilfield horizontal well dynamic and static data, determine the fuel-displaced lower limit of insight layer well and sees
Inject the seam net development condition of well；And then determine water outlet, the chromatographic parameter of each specking is combined in determining water outlet
Value, can quickly recognize water section, determine water blockoff position, and then take water and oil control measure；Meanwhile, it is capable to be suitable for seeing injection
Water and see two kinds of water breakthrough types of water flooding, strong applicability.The existing theoretical foundation of this method, and have measured data support, Neng Gouzhun
Really sentence and know horizontal well water exit position, provides foundation for the formulation of High water cut horizontal well control measures.
Detailed description of the invention
Fig. 1 is flow chart of the method for the present invention；
Fig. 2 is shown in water flooding horizontal well CP-X oil saturation isogram for of the invention；
Fig. 3 is that injection water horizontal well CP-Y adds up water filling distribution map for of the invention seeing.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover
Cover it is non-exclusive include, for example, the process, method, system, product or equipment for containing a series of steps or units are not necessarily limited to
Step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, product
Or other step or units that equipment is intrinsic.
The invention will be described in further detail with reference to the accompanying drawing:
Referring to Fig. 1, a kind of oilfield horizontal well water blockoff of the invention position quick recognition method is provided according to water breakthrough well saliferous first
Material determines water breakthrough type, collects oil reservoir physical property and Production development data, determines the fuel-displaced lower limit of insight layer well and sees injection
Well stitches net development condition；Insight layer well utilizes fuel-displaced lower limit standard, analyzes plane oil-containing situation, in conjunction with surrounding oil well reality
The condition of production, qualitatively judge water outlet；See that injection well by dynamic response relationship, determines water outlet.Then it comprehensively utilizes
The water outlet judged determines different interval water outlet status in conjunction with each specking chromatography value height of individual well；Last combination pressure,
Position is transformed, determines packer block-up position.
Specific technical solution is:
Step 1: according to the saliferous data after oilfield horizontal well water breakthrough, determining water breakthrough type；After oilfield horizontal well water breakthrough
Water type is CaCl2When, water breakthrough type is to see water flooding；Water type after oilfield horizontal well water breakthrough is Na2SO4When, water breakthrough type is
See injection water.
Step 2: when water breakthrough type is to see water flooding, according to the reservoir properties of oilfield horizontal well and Production development data,
Resistance, interval transit time, permeability and the core intersection of drafting oilfield horizontal well and aqueous relational graph and oilfield horizontal well
Resistance, interval transit time, permeability and core intersection and production capacity relational graph, determine the fuel-displaced lower limit of oilfield horizontal well；When
Water breakthrough type is to obtain the corresponding pass of long with depositing the liquid measure of pressure-break of oilfield horizontal well when seeing injection water by underground microseism
System, and to obtain pressure-break long for the ground liquid measure of depositing by measuring；Seam net distribution map is drawn according to pressure-break is long, according to seam net distribution map
The water injection well for sentencing knowledge oilfield horizontal well is exchanged information；The seam for determining oilfield horizontal well of exchanging information with water injection well is grown according to transformation seam
Net development condition；Wherein, long with depositing the liquid measure of pressure-break is positively correlated.
Step 3: when water breakthrough type is to see water flooding, according to the fuel-displaced lower limit of oilfield horizontal well, plane oil-containing situation is
It is no be lower than fuel-displaced lower limit standard, it is no, be not discharged；It is, in conjunction with surrounding oil well practical condition, to determine the water outlet of oilfield horizontal well
End；When water breakthrough type be see injection water when, by oilfield horizontal well seam net development condition and oilfield horizontal well it is aqueous and super
The relationship of preceding water injection rate, water injection intensity and accumulative water filling, whether water injection intensity and accumulative water injection rate are excessive, no, are not discharged；
It is the water outlet for determining oilfield horizontal well；
Step 4: according to the specking chromatography value of the water outlet of oilfield horizontal well, determining the water exit end of oilfield horizontal well；When seeing
Water type is when seeing water flooding, and the specking chromatographic parameter value of oilfield horizontal well is going out for oilfield horizontal well lower than the region of standard value
Water section；When water breakthrough type is to see injection water, the region that the specking chromatographic parameter value of oilfield horizontal well is higher than standard value is oil field
The water exit end of horizontal well.
Step 5: according to the water exit end of oilfield horizontal well, when water breakthrough type is to see water flooding, water blockoff position and water exit end
Between reserve 50m, determine the water blockoff position of oilfield horizontal well；When water breakthrough type is to see injection water, water blockoff position and water exit end
Between reserve 100m, determine the water blockoff position of oilfield horizontal well.
Embodiment 1
Water breakthrough well data: more 10 sections of cluster pressure break of CP-X segmentation, add sand 335m3, acid adding 50m3, initial stage daily output liquid of going into operation
9.6m3, produce liquid 4.8t daily, aqueous 41.7%, saliferous 34486mg/l, water type CaCl after water breakthrough2。
Step 1: water breakthrough type sentences knowledge.
Since the well saliferous is higher (general > 30000mg/l), water type CaCl2 is shown in water flooding.
Step 2: collecting CP-X well reservoir properties and Production development data.
Resistance, interval transit time, permeability and the core intersection of drafting oilfield horizontal well and aqueous relational graph, and oil
Resistance, interval transit time, permeability and the core intersection of water in field horizontal well and the relational graph of production capacity determine the fuel-displaced offline of horizontal well
Resistance is 30 Ω, and the velocity of sound is greater than 220 μm/m, and core intersection is greater than 10m.
Step 3: determining water outlet.
According to fuel-displaced lower limit standard, plane oil-containing situation is analyzed, in conjunction with the actual condition of production of surrounding oil well, referring to fig. 2,
Determine that the well water outlet is southeastern direction.
Step 4: determining water exit end.
According to chromatography value, oiliness and the actual condition of production of surrounding oil well, judge on the south water exit end 2705m.
Step 5: determine water blockoff position: combination pressure, transformation position are reserved 50m, are determined between water blockoff position and water exit end
Packer block-up position.
Embodiment 2
Water breakthrough well data: more 15 sections of cluster pressure break of CP-Y segmentation, add sand 491m3, acid adding 84m3, there is 3 mouthfuls of corresponding wells before operation
Accumulative super note 7421m3；Operation initial stage produces liquid 14.03m daily3, produce liquid 0t, aqueous 100%, saliferous 9644mg/l, water type daily
Na2SO4。
Step 1: water breakthrough type sentences knowledge
Since the well saliferous is lower (general < 15000mg/l), water type is sodium sulphate, sees injection water.
Step 2: collecting CP-X well reservoir properties and Production development data.
The corresponding relationship of long with depositing the liquid measure of pressure-break of oilfield horizontal well is obtained by underground microseism, and passes through measurement
Ground liquid measure of depositing to obtain pressure-break long；Seam net distribution map is drawn according to pressure-break is long, it is horizontal to sentence knowledge oil field according to seam net distribution map
The water injection well of well is exchanged information；The seam net development condition for determining oilfield horizontal well of exchanging information with water injection well is grown according to transformation seam；
Wherein, long with depositing the liquid measure of pressure-break is positively correlated.Pressure-break length=α deposits ground liquid measure, and α is positive correlation coefficient.
Step 3: determining water outlet.
By the seam net development condition and the aqueous and Advance Water Injection amount of oilfield horizontal well of oilfield horizontal well, water injection intensity with
And the relationship of accumulative water filling, southern water breakthrough, is shown in Fig. 3 from the point of view of water drive distribution.
Step 4: determining water exit end.
The following chromatography value of well depth 3255m is high, physical property is good, Yi Jianshui；
Step 5: determining water blockoff position.
By water outlet fragment position and combination pressure and transformation situation, reserved between water blockoff position and water exit end
100m determines packer block-up position.
The above content is merely illustrative of the invention's technical idea, and this does not limit the scope of protection of the present invention, all to press
According to technical idea proposed by the present invention, any changes made on the basis of the technical scheme each falls within claims of the present invention
Protection scope within.
Claims (7)
1. a kind of oilfield horizontal well water blockoff position quick recognition method, which comprises the following steps:
Step 1: according to the water type after oilfield horizontal well water breakthrough, determining water breakthrough type；
Step 2: when water breakthrough type is to see water flooding, determining the fuel-displaced lower limit of oilfield horizontal well；When water breakthrough type is to see injection
When water, the seam net development condition of oilfield horizontal well is determined；
Step 3: when water breakthrough type is to see water flooding, according to the fuel-displaced lower limit of oilfield horizontal well and surrounding oil well actual production feelings
Condition determines the water outlet of oilfield horizontal well；When water breakthrough type is to see injection water, pass through the seam net development condition of oilfield horizontal well
With dynamic response relationship, the water outlet of oilfield horizontal well is determined；
Step 4: according to the chromatographic parameter value of each specking in water outlet, determining the water exit end of oilfield horizontal well；
Step 5: according to the water exit end of oilfield horizontal well, determining the water blockoff position of oilfield horizontal well.
2. oilfield horizontal well water blockoff according to claim 1 position quick recognition method, which is characterized in that the step 1
Method particularly includes:
According to the water type after oilfield horizontal well water breakthrough, water breakthrough type is determined；Water type is CaCl after oilfield horizontal well water breakthrough2When, see
Water type is to see water flooding；Water type after oilfield horizontal well water breakthrough is Na2SO4When, water breakthrough type is to see injection water.
3. oilfield horizontal well water blockoff according to claim 1 position quick recognition method, which is characterized in that the step 2
The fuel-displaced lower limit of middle determining oilfield horizontal well method particularly includes:
According to the reservoir properties of oilfield horizontal well and Production development data, resistance, the interval transit time, infiltration of oilfield horizontal well are drawn
Resistance, interval transit time, permeability and the core intersection of rate and core intersection and aqueous relational graph and oilfield horizontal well
With the relational graph of production capacity, the fuel-displaced lower limit of oilfield horizontal well is determined.
4. oilfield horizontal well water blockoff according to claim 1 position quick recognition method, which is characterized in that the step 2
The seam net development condition of middle determining oilfield horizontal well method particularly includes:
The corresponding relationship of long with depositing the liquid measure of pressure-break of oilfield horizontal well is obtained by underground microseism, and being deposited by what is measured
It is long that ground liquid measure obtains pressure-break；Long draw is stitched according to transformation and stitches net distribution map, is sentenced according to seam net distribution map and is known oilfield horizontal well
Water injection well is exchanged information；The seam net development condition for determining oilfield horizontal well of exchanging information with water injection well is grown according to pressure-break.
5. oilfield horizontal well water blockoff according to claim 1 position quick recognition method, which is characterized in that the step 3
In dynamic response relationship be the aqueous and Advance Water Injection amount of oilfield horizontal well, water injection intensity and the accumulative relationship filled the water.
6. oilfield horizontal well water blockoff according to claim 1 position quick recognition method, which is characterized in that the step 4
Method particularly includes:
According to the specking chromatography value of oilfield horizontal well water outlet, the water exit end of oilfield horizontal well is determined；When water breakthrough type is insight
When layer water, the region that the specking chromatographic parameter value of oilfield horizontal well is lower than standard value is the water exit end of oilfield horizontal well；Work as water breakthrough
Type is when seeing injection water, and the region that the specking chromatographic parameter value of oilfield horizontal well is higher than standard value is the water outlet of oilfield horizontal well
Section.
7. oilfield horizontal well water blockoff according to claim 1 position quick recognition method, which is characterized in that the step 5
Method particularly includes:
It is reserved between water blockoff position and water exit end according to the water exit end of oilfield horizontal well when water breakthrough type is to see water flooding
50m determines the water blockoff position of oilfield horizontal well；When water breakthrough type is to see injection water, reserved between water blockoff position and water exit end
100m determines the water blockoff position of oilfield horizontal well.
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