CN108898507A - Producing well perforations adding changes a layer measure workload prediction technique - Google Patents
Producing well perforations adding changes a layer measure workload prediction technique Download PDFInfo
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- CN108898507A CN108898507A CN201810611050.1A CN201810611050A CN108898507A CN 108898507 A CN108898507 A CN 108898507A CN 201810611050 A CN201810611050 A CN 201810611050A CN 108898507 A CN108898507 A CN 108898507A
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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Abstract
The present invention provides a kind of producing well perforations adding and changes a layer measure workload prediction technique, which changes a layer measure workload prediction technique and include：Step 1, it determines annual perforations adding Gai floor Bowl number, counts the well age distribution that annual perforations adding changes layer service shaft；Step 2, the annual new well second year progress perforations adding of statistics changes a layer action data, and measure proportionality coefficient on new well is determined by each year ratio；Step 3, statistics new annual perforations adding of the well after operation over the years changes the well of layer measure, calculates the relationship that perforations adding changes well time variation and well age of layer measure, carries out formula fitting formula；Step 4, according to modified fitting formula, the measure workload predictor formula of producing well is provided, predicts that the perforations adding of next year changes a layer measure workload.The producing well perforations adding changes a layer measure workload prediction technique and provides the predictor formula that perforations adding changes layer workload, is the arrangement of measure workload and the prediction of crude output, provides a kind of reference method, preferably instruct oil field development production practices.
Description
Technical field
The present invention relates to oil reservoir development technical field, especially relating to a kind of producing well perforations adding, to change layer measure workload pre-
Survey method.
Background technique
Crude output is divided into natural production of old well, old well oil increment from stimulation and new well production three parts.In order to keep oil
The stabilization of field yield needs constantly to discover new oil fields, while carrying out that viscous crude is handled up, perforations adding changes layer, acid fracturing etc. to old well
Well stimulation, to keep the production scale in oil field.The infusion of financial resources of new well is larger, and risk is larger, but new well investment is that crude oil produces
The basis of the holding sustainable development of amount, the opposite infusion of financial resources of measure is less, and risk is lower.Each year measure year oil increment accounts for always
The certain proportion of yield, under the situation that crude oil price continues lower price, it is contemplated that the maximization of benefit, the throwing of old well measure
Enter it is opposite to increase, measure becomes one of the important means of oilfield stable production, measure workload number, have direct shadow to yield
It rings.And currently without the method for a set of prediction measure workload, only simply according to measure workload over the years carry out averagely come
It predicts lower yearly amount of work, cannot provide more science accurate measure workload prediction technique, how to come from the angle of science pre-
The workload size for surveying the annual measure in SHENGLI PETROLEUM AREA, is problem urgently to be resolved.We have invented a kind of new producing wells thus
Perforations adding changes a layer measure workload prediction technique, solves the above technical problem.
Summary of the invention
The object of the present invention is to provide a kind of water-drive pools in late high water content period, can be rapidly performed by reflection perforations adding and change layer
The index perforations adding of measure potentiality changes a layer prediction for measure workload, provides adopting for foundation for distributing rationally for next year yield forming
Oil well perforations adding changes a layer measure workload prediction technique.
The purpose of the present invention can be achieved by the following technical measures：Producing well perforations adding changes a layer measure workload prediction side
Method, the producing well perforations adding change a layer measure workload prediction technique and include：Step 1, annual perforations adding Gai floor Bowl number is determined, statistics is annual
Perforations adding changes the well age distribution of layer service shaft；Step 2, the annual new well second year progress perforations adding of statistics changes a layer action data, by every
1 year ratio determines measure proportionality coefficient on new well；Step 3, statistics new annual perforations adding of the well after operation over the years changes layer and arranges
The well applied calculates the relationship that perforations adding changes well time variation and well age of layer measure, carries out formula fitting formula；Step 4, according to repairing
Positive fitting formula provides the measure workload predictor formula of producing well, predicts that the perforations adding of next year changes a layer measure workload.
The purpose of the present invention can be also achieved by the following technical measures：
In step 2,
Newly well is in the measure ratio formula of second year：
In formula：New well second year measure ratio, %；
The new well second year service shaft number of Xc-, mouth；
Xz-current year newly drowns oneself in a well well number, mouth；
Measure proportionality coefficient formula is on new well：
In formula：Measure proportionality coefficient on the new well of λ-, %；
The beginning year of m- statistics, year；
The end year of n- statistics, year.
In step 3, changing rule is suitble to two-part fitting in fitting, and first segment fitting formula is：
Y=8853.8e-0.109x(0<x<15)
Y=3506.8e-0.135x(15≤x<50)
In formula：E- is constant, is approximately equal to 2.71828；
Y- service shaft well, well；
The well age of x- service shaft, year.
In step 4, since well age is that 30 years later well service shafts time are seldom, the formula of step 3 is modified, well
The time of well progress measure prediction of the age within 30 years, first segment and second segment is modified according to specific block.
In step 4, formula is after amendment：
First segment predictor formula：Ct1=C2*e(-0.109*t1)
First segment predictor formula：Ct2=Ct1*e(-0.135*t2)
In formula：
The service shaft of Ct1- in the first paragraph；
The brought in well of C2- operation second year；
Year in t1- first segment；
Service shaft of the Ct2- in second segment；
Year in t2- second segment.
Producing well perforations adding in the present invention changes a layer measure workload prediction technique, passes through the perforations adding that analysis water-drive pool is annual
Change the well age composition of layer service shaft, the relationship in different well ages and measure frequency, the proportionate relationship of new well and second year service shaft time
It is researched and analysed, explores the incidence relation between the operation time limit and the measure frequency, explore service shaft time between the operation time limit
Incidence relation, provide the fitting predictor formula of measure workload, establish the prediction model of measure workload, provide next year
Measure workload size provides foundation with production for yield.
Detailed description of the invention
Fig. 1 is that producing well perforations adding of the invention changes a layer flow chart for a specific embodiment of measure workload prediction technique；
Fig. 2 is that the oil field A perforations adding in 2012 changes layer measure and operation time limit histogram in a specific embodiment of the invention；
Fig. 3, which changes layer for second year implementation perforations adding in the new well in the oil field 2010-2014 A in a specific embodiment of the invention, to be arranged
The proportional curve figure applied；
Fig. 4 is that the perforations adding in a specific embodiment of the invention changes layer service shaft time and brought in well age relationship scatter plot.
Specific embodiment
To enable above and other objects, features and advantages of the invention to be clearer and more comprehensible, preferably implementation is cited below particularly out
Example, and cooperate shown in attached drawing, it is described in detail below.
As shown in FIG. 1, FIG. 1 is producing well perforations addings of the invention to change a layer flow chart for measure workload prediction technique.
Step 101, it determines annual perforations adding Gai floor Bowl number, counts the well age distribution that annual perforations adding changes layer service shaft.
Step 103, the annual new well second year progress perforations adding of statistics changes a layer action data, is determined by each year ratio
Measure proportionality coefficient on new well.
Newly well is in the measure ratio formula of second year：
In formula：New well second year measure ratio, %；
The new well second year service shaft number of Xc-, mouth；
Xz-current year newly drowns oneself in a well well number, mouth；
Measure proportionality coefficient formula is on new well：
In formula：Measure proportionality coefficient on the new well of λ-, %；
The beginning year of m- statistics, year；
The end year of n- statistics, year；
Step 105, statistics new annual perforations adding of the well after operation over the years changes the well of layer measure, calculates perforations adding and changes a layer measure
Well time variation and well age relationship, carry out formula fitting formula.Changing rule is suitble to two-part fitting in fitting, and first segment is quasi-
Closing formula is：
Y=8853.8e-0.109x(0<x<15)
Y=3506.8e-0.135x(15≤x<50)
In formula：E- is constant, is approximately equal to 2.71828；
Y- service shaft well, well；
The well age of x- service shaft, year；
Step 107, according to modified fitting formula, the measure workload predictor formula of producing well is provided, predicts next year
Perforations adding change a layer measure workload.
Since well age is that 30 years later well service shafts time are seldom, so the formula to step 105 is modified, well age exists
The time of well progress measure prediction within 30 years, first segment and second segment is modified according to specific block.It is public after amendment
Formula is：
First segment predictor formula：Ct1=C2*e(-0.109*t1)
First segment predictor formula：Ct2=Ct1*e(-0.135*t2)
In formula：
The service shaft of Ct1- in the first paragraph；
The brought in well of C2- operation second year；
Year in t1- first segment；
Service shaft of the Ct2- in second segment；
Year in t2- second segment.
The following are a specific embodiment of the invention is applied, include the following steps：
In step 1, changes the data of the well time of layer measure according to the perforations adding of the oil field A 2010-2014, make 2010-2014
Year annual perforations adding is changed to service shaft and these perforations addings change layer well the operation time limit histogram, as shown in Figure 2.
In step 2, annual perforations adding changes the well age distribution situation of layer service shaft in similarity rules：Well age is within 10 years
Well is more, and exponentially successively decreases, and lapse rate is 14% or so；15-30 keeps stablizing；Ratio very little after 30 years, can ignore
Disregard.
In step 3, change the proportional curve figure of layer measure according to perforations adding on the new well second year of the 2010-2014 in the oil field A, such as
Shown in Fig. 3.
In step 4, annual new well perforations adding on second year changes the well about ratio of layer measure in 5.5-8.9% or so,
The variation of this ratio will not be smaller, and average value in recent years can be used as this proportional numbers, the new well second of 2010-2014
Implement perforations adding year and changes the well time ratio of layer about 7.6% or so.
In steps of 5, the perforations adding for counting over the years changes the relationship of well time variation and brought in well age of layer service shaft, obtains measure
Relation curve of the well time with well age, as shown in figure 4, service shaft successively decreases with brought in well age in two-part here, 2-12 well
Successively decrease and successively decrease the measure ratio very little after 13.8% or so, 30 year in 10.9%, 13-30, can ignore.Therefore, it is known that new
The well of measure on well, that is, well age be 2 years service shaft number can predict after annual measure workload.
In step 6, layer service shaft was changed in the perforations adding of second year according to 1988-2017 30 years new wells, to 2018
The perforations adding in year, which changes layer service shaft, to be predicted.
Provide service shaft prediction table of the service shaft of 1988-2017 in 2018.It is specific as shown in table 1.
Workload prediction table of the 1 1988-2017 operation oil well of table in implementing measure in 2018
Specific prediction is as follows：
New well in 2017 is to assume that 2017 newly throw 2000 mouthfuls, and upper measure ratio changes a layer measure according to perforations adding on new well second year
Average proportions 7.6% be calculated as, changing a layer well number in perforations adding in 2018 within 2017 is：2000 × 7.6%=152 well.
Service shaft in 2016 is in 2018 well number：24*e(-0.109*t1)=24*e(-0.109*2)=19 wells.
Service shaft in 2015 is in 2018 well number：38*e(-0.109*t1)=24*e(-0.109*3)=27 wells.
……
Service shaft in 2005 is in 2018 well number：228*e(-0.135*t1)=228*e(-0.135*13)=61 wells.
Service shaft in 1988 is in 2018 well number：62*e(-0.135*t2)=1 well
Above data is added, the perforations adding of prediction 2018 changes a layer measure workload and is：152+19+27+ ...+1=1013
Well.
The water-drive pool perforations adding that the present invention establishes changes a layer method for measure workload, from the objective exploitation rule of oil reservoir,
Start with from history exploitation data, provide the predictor formula that perforations adding changes layer workload, is that the arrangement of measure workload and crude oil produce
The prediction of amount provides a kind of reference method, preferably instructs oil field development production practices.
Claims (5)
1. producing well perforations adding changes a layer measure workload prediction technique, which is characterized in that the producing well perforations adding changes a layer measure workload
Prediction technique includes：
Step 1, it determines annual perforations adding Gai floor Bowl number, counts the well age distribution that annual perforations adding changes layer service shaft；
Step 2, the annual new well second year progress perforations adding of statistics changes a layer action data, is determined on new well by each year ratio
Measure proportionality coefficient；
Step 3, statistics new annual perforations adding of the well after operation over the years changes the well of layer measure, calculates the well that perforations adding changes layer measure
The relationship of variation and well age carries out formula fitting formula；
Step 4, according to modified fitting formula, the measure workload predictor formula of producing well is provided, predicts the perforations adding of next year
Change a layer measure workload.
2. producing well perforations adding according to claim 1 changes a layer measure workload prediction technique, which is characterized in that in step 2
In,
Newly well is in the measure ratio formula of second year：
In formula：New well second year measure ratio, %；
The new well second year service shaft number of Xc-, mouth；
Xz-current year newly drowns oneself in a well well number, mouth；
Measure proportionality coefficient formula is on new well：
In formula：Measure proportionality coefficient on the new well of λ-, %；
The beginning year of m- statistics, year；
The end year of n- statistics, year.
3. producing well perforations adding according to claim 1 changes a layer measure workload prediction technique, which is characterized in that in step 3
In, changing rule is suitble to two-part fitting in fitting, and first segment fitting formula is：
Y=8853.8e-0.109x(0<x<15)
Y=3506.8e-0.135x(15≤x<50)
In formula：E- is constant, is approximately equal to 2.71828；
Y- service shaft well, well；
The well age of x- service shaft, year.
4. producing well perforations adding according to claim 3 changes a layer measure workload prediction technique, which is characterized in that in step 4
In, since well age is that 30 years later well service shafts time are seldom, the formula of step 3 is modified, well age is within 30 years
The time of well progress measure prediction, first segment and second segment is modified according to specific block.
5. producing well perforations adding according to claim 4 changes a layer measure workload prediction technique, which is characterized in that in step 4
In, formula is after amendment：
First segment predictor formula：Ct1=C2*e(-0.109*t1)
First segment predictor formula：Ct2=Ct1*e(-0.135*t2)
In formula：
The service shaft of Ct1- in the first paragraph；
The brought in well of C2- operation second year；
Year in t1- first segment；
Service shaft of the Ct2- in second segment；
Year in t2- second segment.
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|---|---|---|---|---|
| CN105512450A (en) * | 2014-09-23 | 2016-04-20 | 中国石油天然气股份有限公司 | Method and device for quantitative well selection based on oil well measures |
| US20160376885A1 (en) * | 2015-06-23 | 2016-12-29 | Petrochina Company Limited | Method and Apparatus for Performance Prediction of Multi-Layered Oil Reservoirs |
| CN107448185A (en) * | 2016-05-31 | 2017-12-08 | 中国石油化工股份有限公司 | Offshore oilfield new well in old district encrypts well-arranging procedure |
| CN107939357A (en) * | 2017-11-30 | 2018-04-20 | 中国石油化工股份有限公司 | Improve oilfield development system efficiency method |
-
2018
- 2018-06-14 CN CN201810611050.1A patent/CN108898507B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105512450A (en) * | 2014-09-23 | 2016-04-20 | 中国石油天然气股份有限公司 | Method and device for quantitative well selection based on oil well measures |
| US20160376885A1 (en) * | 2015-06-23 | 2016-12-29 | Petrochina Company Limited | Method and Apparatus for Performance Prediction of Multi-Layered Oil Reservoirs |
| CN107448185A (en) * | 2016-05-31 | 2017-12-08 | 中国石油化工股份有限公司 | Offshore oilfield new well in old district encrypts well-arranging procedure |
| CN107939357A (en) * | 2017-11-30 | 2018-04-20 | 中国石油化工股份有限公司 | Improve oilfield development system efficiency method |
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