CN106337679A - Novel method for measuring and calculating well pattern thickening potential - Google Patents
Novel method for measuring and calculating well pattern thickening potential Download PDFInfo
- Publication number
- CN106337679A CN106337679A CN201510404450.1A CN201510404450A CN106337679A CN 106337679 A CN106337679 A CN 106337679A CN 201510404450 A CN201510404450 A CN 201510404450A CN 106337679 A CN106337679 A CN 106337679A
- Authority
- CN
- China
- Prior art keywords
- well
- recoverable reserves
- calculating
- pattern thickening
- economic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention provides a novel method for measuring and calculating well pattern thickening potential comprising following steps: 1. determining oil well single well economic limit recoverable reserves; 2. determining the relationship between the average single well increased recoverable reserves of a close-spaced well and the well density; 3. determining the density of the economic limit well pattern; 4. calculating the drilling well workload of well pattern thickening; 5. calculating the potential of well pattern thickening for increasing recovery efficiency. The novel method for measuring and calculating well pattern thickening potential can satisfy the demand of calculating technical economical policy limit such as economic limit well pattern density and limit thickening potential of extra high water reservoir, and can be more objective in evaluating the exploitation potential of oil reservoirs and guiding the oil field development production practice.
Description
Technical field
The present invention relates to oil-gas field development field, more particularly, to old filed exploitation potential assessment method, that is,
The measuring and calculating of old filed well pattern infilling workload and the prediction improving recovery ratio.
Background technology
Existing well pattern thickening potentiality on the mining site of oil field typically utilize " well spacing density and recovery ratio pass at present
Be formula " calculated, this relational expression be some simple structures such as Yi Shengtuo, isolated island, oil area big,
The empirical equation that the high development block of permeability returns out for sample point, that is,
Wherein:
erRecovery ratio, decimal；
keEffective permeability, μm2；
μoOil viscosity, mpa s；
N well spacing density, mouth/km2.
The method has preferable directive function for the infilling adjustment of aqueous development period low in oil field, but
After being entrance high water-cut development period, the method contradiction actual with exploitation is increasing, is mainly reflected in
Two aspects: one is from formula in itself, with the increase of well spacing density, simply increase swept volume,
Without changing oil displacement efficiency, mining site, it was verified that can increase displacement pressure reduction between well by encryption, enters
And improve oil displacement efficiency, and and the increasing with well spacing density, the impact to oil displacement efficiency is more and more brighter
Aobvious, this factor is not reflected in former formula；Two be economy ultimate well spacing density computational methods with
Practical situation produces and deviates, although the well spacing density of part ultra-high water cut stage oil reservoir has been over economy
Maximum excavation depth, but still there is development benefit.It can be seen that traditional method has been not suitable with ultra-high water cut stage oil
The feature of field exploitation.We have invented a kind of new method of new measuring and calculating well pattern thickening potentiality, solution for this
Determine above technical problem.
Content of the invention
It is an object of the invention to provide one kind can be encrypted with accurate evaluation ultra-high water-containing development late stage oil reservoir
The new method of the measuring and calculating well pattern thickening potentiality of potentiality.
The purpose of the present invention can be achieved by the following technical measures: the new side of measuring and calculating well pattern thickening potentiality
Method, the new method of this measuring and calculating well pattern thickening potentiality includes: step 1, determines the oil well Single Well Economic limit
Recoverable reserves；Step 2, determines that the average individual well of Encryption Well increases the relation of recoverable reserves and well spacing density
Formula；Step 3, determines economy ultimate well spacing density；Step 4, calculates well pattern thickening drilling effort；
And step 5, calculate well pattern thickening and improve recovery factor potential.
The purpose of the present invention also can be achieved by the following technical measures:
In step 1, this Single Well Economic limited recoverable reserves refers in certain technology, economic condition
Under, the accumulation output value within the investment payback time for the oil well be equal to same period gross investment, accumulation annual running cost with and
Necessary tax sum；The determination method of this Single Well Economic limited recoverable reserves is, according to break even
Principle, sets up Single Well Economic limited recoverable reserves and well depth Core analysis, thus can determine that oil well one
Economic limit recoverable reserves under the conditions of stand oil valency, certain well depth.
In step 2, since determining development block operation, the average individual well of all previous encrypted adjustment well increases
The Changing Pattern of recoverable reserves, and set up the relational expression of itself and well spacing density, according to this relation, predict
The individual well of development block stepout well under the conditions of a certain well spacing density increases recoverable reserves.
In step 3, the Single Well Economic limit under the conditions of different oil prices according to determined by step 1 can
Adopt the economy ultimate well spacing density that reserves inverse goes out under different oil prices, that is, under the conditions of a certain well spacing density
When the individual well of stepout well increases recoverable reserves equal to economic limit recoverable reserves, its corresponding well spacing density
For economy ultimate well spacing density.
In step 4, according to current well spacing density and economy ultimate well spacing density, the different oil of measuring and calculating
Well pattern thickening limit drilling effort under the conditions of valency.
In steps of 5, recoverable reserves and well spacing density relational expression are increased according to Encryption Well individual well, pass through
Mathematic integral can get economic limit increases recoverable reserves, and then obtains economic limit raising recovery ratio.
The new method of the measuring and calculating well pattern thickening potentiality in the present invention, according to the actual development rule of development block
Rule determines that the effect of well pattern infilling, with the variation tendency of well spacing density, overcomes traditional method in spy
Contradiction in high water cut viscous heavy crude oil application, can meet the economic limit well pattern of ultra-high water cut stage oil reservoir
Density, the limit encrypt the needs that the techno-economic policy boundaries such as potentiality calculate.Therefore, it can more objective
See and evaluate oil reservoir development potentiality, instruct oil field development production practices.
Brief description
Fig. 1 is the flow chart of the specific embodiment of new method of measuring and calculating well pattern thickening potentiality of the present invention；
Fig. 2 is Single Well Economic limited recoverable reserves and well depth relation in a specific embodiment of the present invention
Calculate plate；
Fig. 3 is that the Encryption Well average individual well recoverable reserves in a specific embodiment of the present invention is close with well pattern
The graph of relation of degree；
Fig. 4 is that the economic limit well pattern under the conditions of the different oil prices in a specific embodiment of the present invention is close
The schematic diagram of degree；
Fig. 5 is the economic limit spudder under the conditions of the different oil prices in a specific embodiment of the present invention
The schematic diagram that work is measured；
Economic limit raising under the conditions of Fig. 6 is the different oil prices in a specific embodiment of the present invention is adopted
The schematic diagram of yield amplitude.
Specific embodiment
Above and other objects, features and advantages for enabling the present invention become apparent, cited below particularly
Go out preferred embodiment, and coordinate institute's accompanying drawings, be described in detail below.
As shown in figure 1, Fig. 1 is the specific embodiment of the new method of measuring and calculating well pattern thickening potentiality of the present invention
Flow chart.With Tuo21 fault block victory two area husky 283-5As a example unit, using its well pattern of the method tentative calculation
Encryption ultimate potential.
This unit oil area 8.2km2, mining-employed reserves 2296 × 104T, current recoverable reserves 907 ×
104T, current recovery ratio 39.5%, current 17.4 mouthfuls/km of well spacing density2, deep 2142m in oil reservoir.
In a step 101, oil well Single Well Economic limited recoverable reserves are determined.According to Profit and loss balance principle,
Set up Single Well Economic limited recoverable reserves and well depth Core analysis, thus can determine that oil well in a stand oil
Economic limit recoverable reserves under the conditions of valency, certain well depth.So-called Single Well Economic limited recoverable reserves are
Refer under certain technology, economic condition, the accumulation output value within the investment payback time for the oil well is equal to the same period
Gross investment, accumulation annual running cost are used and necessary tax sum.
In this embodiment, as shown in Figure 2.This unit oil price 50 $/bbl, 60 $/bbl, 70 $/bbl,
Single Well Economic limited recoverable reserves when 80 $/bbl, 90 $/bbl, 100 $/bbl be respectively 8221t,
7073t、6296t、5673t、5162t、4736t.
In step 103, since determining development block operation, the average individual well of all previous encrypted adjustment well increases
Plus the Changing Pattern of recoverable reserves, and set up the relational expression of itself and well spacing density.According to this relation, can
The individual well of prediction development block stepout well under the conditions of a certain well spacing density increases recoverable reserves.
In this embodiment, the history according to this unit develops data, determines different times Encryption Well list
Well increases the relation of recoverable reserves and well spacing density, as shown in figure 3, and returning out relational expression.This is single
First individual well increases recoverable reserves:
ndj=21.9334 × e-0.1764n
ndjIndividual well increase recoverable reserves, ten thousand tons；
N well spacing density, mouth/km2.
In step 105, determine economy ultimate well spacing density.Newly bore under the conditions of a certain well spacing density
When the individual well of well increases recoverable reserves and is equal to economic limit recoverable reserves, its corresponding well spacing density be through
Ji maximum excavation depth.
In this embodiment, gone out according to the Single Well Economic limited recoverable reserves inverse under the conditions of different oil prices
Economy ultimate well spacing density under different oil prices, as shown in Figure 4.For example be under the conditions of oil price 80 $/bbl should
The economy ultimate well spacing density of unit is 20 mouthfuls/km2.
In step 107, calculate well pattern thickening drilling effort.According to current well spacing density and warp
Ji maximum excavation depth can calculate limit drilling effort.
In this embodiment, the limit drilling well in conjunction with current well spacing density, under the conditions of the different oil price of measuring and calculating
Workload, as shown in Figure 5.For example under the conditions of oil price 80 $/bbl, this unit at most also can stepout well 21
Mouthful.
In step 109, calculate well pattern thickening and improve recovery factor potential.Increased according to Encryption Well individual well
Recoverable reserves and well spacing density relational expression, can get economic limit increase by mathematic integral and can adopt storage
Amount, and then obtain economic limit raising recovery ratio.
In this embodiment, as shown in fig. 6, this unit economic limit under the conditions of such as oil price 80 $/bbl
Improve 0.7 percentage point of recovery ratio.
Claims (6)
1. the new method of measuring and calculating well pattern thickening potentiality is it is characterised in that the new method of this measuring and calculating well pattern thickening potentiality includes:
Step 1, determines oil well Single Well Economic limited recoverable reserves；
Step 2, determines that the average individual well of Encryption Well increases the relational expression of recoverable reserves and well spacing density；
Step 3, determines economy ultimate well spacing density；
Step 4, calculates well pattern thickening drilling effort；And
Step 5, calculates well pattern thickening and improves recovery factor potential.
2. the new method of measuring and calculating well pattern thickening potentiality according to claim 1, it is characterized in that, in step 1, this Single Well Economic limited recoverable reserves refers under certain technology, economic condition, and the accumulation output value within the investment payback time for the oil well is equal to same period gross investment, accumulation annual running cost is used and necessary tax sum；The determination method of this Single Well Economic limited recoverable reserves is, according to Profit and loss balance principle, sets up Single Well Economic limited recoverable reserves and well depth Core analysis, thus can determine that economic limit under the conditions of certain oil price, certain well depth for the oil well can.
3. the new method of measuring and calculating well pattern thickening potentiality according to claim 1, it is characterized in that, in step 2, since determining development block operation, the average individual well of all previous encrypted adjustment well increases the Changing Pattern of recoverable reserves, and set up the relational expression of itself and well spacing density, according to this relation, predict that the individual well of development block stepout well under the conditions of a certain well spacing density increases recoverable reserves.
4. the new method of measuring and calculating well pattern thickening potentiality according to claim 1, it is characterized in that, in step 3, Single Well Economic limited recoverable reserves inverse under the conditions of different oil prices according to determined by step 1 goes out the economy ultimate well spacing density under different oil prices, when i.e. under the conditions of a certain well spacing density, the individual well of stepout well increases recoverable reserves equal to economic limit recoverable reserves, its corresponding well spacing density is economy ultimate well spacing density.
5. the new method of measuring and calculating well pattern thickening potentiality according to claim 1 it is characterised in that in step 4, according to current well spacing density and economy ultimate well spacing density, calculates the well pattern thickening limit drilling effort under the conditions of different oil prices.
6. the new method of measuring and calculating well pattern thickening potentiality according to claim 1, it is characterized in that, in steps of 5, recoverable reserves and well spacing density relational expression are increased according to Encryption Well individual well, can get economic limit by mathematic integral increases recoverable reserves, and then obtains economic limit raising recovery ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510404450.1A CN106337679A (en) | 2015-07-10 | 2015-07-10 | Novel method for measuring and calculating well pattern thickening potential |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510404450.1A CN106337679A (en) | 2015-07-10 | 2015-07-10 | Novel method for measuring and calculating well pattern thickening potential |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106337679A true CN106337679A (en) | 2017-01-18 |
Family
ID=57826900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510404450.1A Pending CN106337679A (en) | 2015-07-10 | 2015-07-10 | Novel method for measuring and calculating well pattern thickening potential |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106337679A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829719A (en) * | 2017-02-21 | 2018-03-23 | 中国石油化工股份有限公司 | The Optimization Design of marine oil reservoir new district economic optimum well pattern |
| CN107939371A (en) * | 2017-10-19 | 2018-04-20 | 中国石油天然气股份有限公司 | A kind of method and device of definite well pattern thickening feasibility |
| CN108180007A (en) * | 2017-12-26 | 2018-06-19 | 中国石油化工股份有限公司 | Old filed economic limit drilling well potentiality and recovery ratio measuring and calculating new method |
| CN109025965A (en) * | 2018-08-31 | 2018-12-18 | 中国石油天然气股份有限公司 | A kind of method of determining Oil in Super-low Permeability compact reservoir waterflooding extraction permeability limits |
| CN109214022A (en) * | 2017-07-04 | 2019-01-15 | 中国石油化工股份有限公司 | A kind of individual well can adopt the method for building up and exploration project reserves index prediction technique of changing rule dynamic model |
| CN110344795A (en) * | 2019-07-10 | 2019-10-18 | 中国海洋石油集团有限公司 | One kind is poly- to drive and well pattern thickening combination and exploitation mode relevance grade evaluation method |
| CN110578509A (en) * | 2019-07-27 | 2019-12-17 | 大庆油田有限责任公司 | Encryption adjusting method suitable for horizontal well region of low-permeability oil field |
| CN112796719A (en) * | 2021-01-15 | 2021-05-14 | 大庆石油管理局有限公司 | Drilling and closing method for oil field encryption adjusting well |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839959A (en) * | 2012-09-04 | 2012-12-26 | 中国石油天然气股份有限公司 | Longitudinally superposed developing two-strata oil reservoir well pattern, and arrangement method of two-strata oil reservoir well pattern |
| CA2789537A1 (en) * | 2011-09-06 | 2013-03-06 | IFP Energies Nouvelles | Method for exploiting an oil deposit based on a position selection technique of the wells to be drilled |
| CN104453834A (en) * | 2014-10-31 | 2015-03-25 | 中国石油化工股份有限公司 | Injection-production relation optimizing and adjusting method for well group |
| CN104695934A (en) * | 2013-12-06 | 2015-06-10 | 中国石油天然气股份有限公司 | Tight sandstone gas reservoir development well pattern optimization method |
-
2015
- 2015-07-10 CN CN201510404450.1A patent/CN106337679A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2789537A1 (en) * | 2011-09-06 | 2013-03-06 | IFP Energies Nouvelles | Method for exploiting an oil deposit based on a position selection technique of the wells to be drilled |
| CN102839959A (en) * | 2012-09-04 | 2012-12-26 | 中国石油天然气股份有限公司 | Longitudinally superposed developing two-strata oil reservoir well pattern, and arrangement method of two-strata oil reservoir well pattern |
| CN104695934A (en) * | 2013-12-06 | 2015-06-10 | 中国石油天然气股份有限公司 | Tight sandstone gas reservoir development well pattern optimization method |
| CN104453834A (en) * | 2014-10-31 | 2015-03-25 | 中国石油化工股份有限公司 | Injection-production relation optimizing and adjusting method for well group |
Non-Patent Citations (1)
| Title |
|---|
| 张金铸: "油藏特高含水期井网加密潜力评价新方法", 《油气地质与采收率》 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829719A (en) * | 2017-02-21 | 2018-03-23 | 中国石油化工股份有限公司 | The Optimization Design of marine oil reservoir new district economic optimum well pattern |
| CN109214022A (en) * | 2017-07-04 | 2019-01-15 | 中国石油化工股份有限公司 | A kind of individual well can adopt the method for building up and exploration project reserves index prediction technique of changing rule dynamic model |
| CN107939371A (en) * | 2017-10-19 | 2018-04-20 | 中国石油天然气股份有限公司 | A kind of method and device of definite well pattern thickening feasibility |
| CN107939371B (en) * | 2017-10-19 | 2019-09-10 | 中国石油天然气股份有限公司 | A kind of method and device of determining well pattern thickening feasibility |
| CN108180007B (en) * | 2017-12-26 | 2021-11-16 | 中国石油化工股份有限公司 | New method for measuring and calculating economic ultimate drilling potential and recovery ratio of old oil field |
| CN108180007A (en) * | 2017-12-26 | 2018-06-19 | 中国石油化工股份有限公司 | Old filed economic limit drilling well potentiality and recovery ratio measuring and calculating new method |
| CN109025965A (en) * | 2018-08-31 | 2018-12-18 | 中国石油天然气股份有限公司 | A kind of method of determining Oil in Super-low Permeability compact reservoir waterflooding extraction permeability limits |
| CN110344795A (en) * | 2019-07-10 | 2019-10-18 | 中国海洋石油集团有限公司 | One kind is poly- to drive and well pattern thickening combination and exploitation mode relevance grade evaluation method |
| CN110344795B (en) * | 2019-07-10 | 2021-07-27 | 中国海洋石油集团有限公司 | Method for evaluating applicability of polymer flooding and well pattern encryption combined development mode |
| CN110578509A (en) * | 2019-07-27 | 2019-12-17 | 大庆油田有限责任公司 | Encryption adjusting method suitable for horizontal well region of low-permeability oil field |
| CN110578509B (en) * | 2019-07-27 | 2022-03-08 | 大庆油田有限责任公司 | Encryption adjusting method suitable for horizontal well region of low-permeability oil field |
| CN112796719A (en) * | 2021-01-15 | 2021-05-14 | 大庆石油管理局有限公司 | Drilling and closing method for oil field encryption adjusting well |
| CN112796719B (en) * | 2021-01-15 | 2022-05-20 | 大庆石油管理局有限公司 | Drilling and closing method for encryption adjusting well in oil field |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106337679A (en) | Novel method for measuring and calculating well pattern thickening potential | |
| Clark | Determination of recovery factor in the Bakken formation, Mountrail County, ND | |
| Wang et al. | Predicting production and estimated ultimate recoveries for shale gas wells: A new methodology approach | |
| CN104912528B (en) | A kind of ultra-high water cut stage WATER FLOODING CHARACTERISTIC CURVE flex point sentences knowledge method | |
| CN104929594B (en) | Oil well measure effect evaluation method | |
| CN104634713B (en) | Method for representing non-linear relationship of oil-water relative permeability curve at ultra-high water cut stage | |
| CN104314547A (en) | HAFD segmented optimization method and system | |
| CN104500030A (en) | Ultra-high pressure gas reservoir production dynamic abnormal data diagnosis and correction method | |
| CN106204304A (en) | A kind of Conglomerate Reservoir gathers the determination method driving permeability saturation curve | |
| WO2020063603A1 (en) | Dynamic data processing method for oilfield development and production | |
| CN103075142A (en) | Method for selecting water plugging oil well during development of oilfield through water injection | |
| CN104346511A (en) | Bran-new method and bran-new device for dynamically monitoring oil deposit | |
| CN104653170A (en) | Method for calibrating recoverable reserve in ultra-high water containing stage | |
| CN106761718A (en) | Determine that mid-deep strata oil reservoir employs the new method of thickness limit | |
| RU2521245C1 (en) | Control method of oil pool development | |
| CN107657338A (en) | The horizontal lower change of production Forecasting Methodology of different liquid measures | |
| RU2565313C2 (en) | Operations control method for reservoir flooding | |
| CN107369100A (en) | Water-drive pool recovers recoverable reserves potentiality measuring and calculating new method | |
| CN112183800B (en) | Method and device for predicting recoverable reserves of crude oil of water-drive reservoir | |
| CN104636818A (en) | Gas storage gas-oil interaction region well productivity predicating method and device | |
| CN104033176A (en) | Method for evaluating segmental gas extraction effect by utilizing drill site gas extraction data | |
| CN106150454B (en) | Offshore oilfield vector quantization production and injection proration method | |
| CN108573076A (en) | A kind of prediction technique of shale gas pressing crack construction accident | |
| CN106156876A (en) | The Forecasting Methodology of waterflooding development oil reservoir ultra-high water-containing later stage natural declining rate | |
| RU2528185C1 (en) | Control method of oil pool development |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170118 |
|
| RJ01 | Rejection of invention patent application after publication |