CN109492840A - A kind of method that the individual well daily oil production of oil reservoir is not employed in determination - Google Patents
A kind of method that the individual well daily oil production of oil reservoir is not employed in determination Download PDFInfo
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- CN109492840A CN109492840A CN201710810719.5A CN201710810719A CN109492840A CN 109492840 A CN109492840 A CN 109492840A CN 201710810719 A CN201710810719 A CN 201710810719A CN 109492840 A CN109492840 A CN 109492840A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
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Abstract
The invention discloses a kind of methods that the individual well daily oil production of oil reservoir is not employed in determination, belong to oilfield exploitation production capacity field.The described method includes: determining the analogy coefficient of the individual well daily oil production between the different zones using same technique exploitation；According to the analogy coefficient and the practical individual well daily oil production value in one of region, the individual well daily oil production for not employing the region of oil reservoir is obtained.The analogy coefficient for the individual well daily oil production between different zones that the present invention is exploited by using same technique, under identical mining conditions, form the analogy of the individual well daily oil production between different production zones, in the situation known to wherein practical individual well daily oil production value of the region using same technique exploitation, by determining the analogy coefficient between the practical individual well daily oil production value in the region and the individual well daily oil production in another region that will also the same technique will be used to exploit, that is, obtain the individual well daily oil production for not employing the region of oil reservoir.
Description
Technical field
The present invention relates to oilfield exploitation production capacity field, in particular to the individual well daily oil production of oil reservoir is not employed in a kind of determination
Method.
Background technique
Oilfield exploitation production capacity reflects the economic benefit of oilfield exploitation, and oilfield exploitation production capacity can carry out table with many indexes
Show, such as day oil production level, yearly rate-oil production, individual well daily oil production etc..Wherein individual well daily oil production refers to a region daily output grease
The ratio of the flat well number that drives a well with this region, the well number that drives a well refer to continuous production one day or more and have the oil well of certain oil gas level.By
Prospect pit and evaluation well in early implementation, drilling well, perforating technology level are lower, while using exhausted formula exploitation, being not carried out note
Water exploitation, well yield is lower, therefore more oil reservoir is not employed.With the continuous development of technology, oil well newly developed has made
It is exploited with new technology, whether new technology can also be used for the oil well of early development does not employ oil reservoir to it and exploit
It is problem deserving of attention to increase oil production.Therefore new technology (such as new boring method, new equipment etc.) is being taken
To early stage pilot production do not employ oil reservoir carry out scale exploitation before, need to estimate the individual well daily oil production for not employing oil reservoir
It calculates, provides foundation for whether new technology puts into implementation.
Determination used at present does not employ the method for the individual well daily oil production of oil reservoir and evaluates well, pilot production well group etc. for brill, right
It carries out pilot production, using pilot production result as the individual well daily oil production for not employing oil reservoir.For the oil well of early development, the area
Domain drills out pilot production well before exploitation, but old prospect pit, old pilot production well are implemented by the technology before not updating, can not evaluate
The individual well daily oil production that new technology can obtain.Therefore needing to re-use new technology on the area drills out new spy
Well, pilot production well etc. re-start formation testing, pilot production, to determine the individual well daily oil production for not employing oil reservoir.
In the implementation of the present invention, the inventor finds that the existing technology has at least the following problems:
For the oil well of early development, before taking new technology, re-uses new technology and bore evaluation well, examination
Well group etc. is adopted to determine the individual well daily oil production for not employing oil reservoir, generation it is costly, time investment is more.
Summary of the invention
In order to solve the problems, such as that the prior art is above-mentioned, the embodiment of the invention provides the individual wells that oil reservoir is not employed in a kind of determination
The method of daily oil production.The technical solution is as follows:
The present invention provides a kind of methods that the individual well daily oil production of oil reservoir is not employed in determination, which comprises
Step 1: determining the analogy coefficient of the individual well daily oil production between the different zones using same technique exploitation；
Step 2: according to the analogy coefficient and the practical individual well daily oil production value in one of region, acquisition is not employed
The individual well daily oil production in the region of oil reservoir.
Preferably, the step 1 specifically: according to the expression formula of individual well daily oil production, determine and exploited using same technique
Different zones between individual well daily oil production analogy coefficient.
Preferably, the expression formula of the individual well daily oil production are as follows:
Wherein: koCrude oil oleic permeability, 10-3μm2；
μoViscosity of crude, mPa.s；
reDrainage radius, m；rwAnd wellbore radius, m；
βo- oil volume factor；
ρo- oil density, t/m3；
Δ P- producing pressure differential, MPa；
H- core intersection, m.
Preferably, the step 1 includes: by the steadiness parameter in the expression formula of the individual well daily oil production and by technology
The parameter removal that condition influences, determines individual well daily oil production analogy coefficient.
Preferably, the steadiness parameter refers to oil volume factor, the parameter influenced by technical conditions refer to drainage radius,
Wellbore radius and producing pressure differential.
Preferably, the individual well daily oil production analogy coefficient are as follows:
Preferably, the step 2, comprising:
Obtain the analogy coefficient lambda for having used the individual well daily oil production of A technology production zone1, A technology production zone to be employed
The individual well daily oil production for not employing oil reservoir analogy coefficient lambda2And the practical individual well of A technology production zone is used to produce daily
Oil mass value obtains the individual well daily oil production for not employing oil reservoir.
Preferably, the individual well daily oil production for not employing oil reservoir are as follows:
Wherein: ko1The crude oil oleic permeability for not employing oil reservoir of A technology production zone to be employed, 10-3μm2；
μo1The viscosity of crude for not employing oil reservoir of A technology production zone to be employed, mPa.s；
ρo1The oil density for not employing oil reservoir of-A technology production zone to be employed, t/m3；
h1The core intersection for not employing oil reservoir of A technology production zone to be employed, m；
ko2Use the crude oil oleic permeability of A technology production zone, 10-3μm2；
μo2The viscosity of crude of A technology production zone, mPa.s are used；
ρo2- use the oil density of A technology production zone, t/m3；
h2The core intersection of A technology production zone, m are used；
Q01The individual well daily oil production for not employing oil reservoir of A technology production zone to be employed, t/d；
Q02The practical individual well daily oil production value of A technology production zone, t/d are used.
Technical solution provided in an embodiment of the present invention has the benefit that
By using the analogy coefficient of the individual well daily oil production between the different zones of same technique exploitation, i.e., identical
Under mining conditions, the analogy of the individual well daily oil production between different production zones is formed, a region is using identical wherein
Known to the practical individual well daily oil production value of technology exploitation in situation, by determine the practical individual well daily oil production value in the region with
, also by using the analogy coefficient between the individual well daily oil production in the region of same technique exploitation, can obtain this will adopt for another
With the individual well daily oil production value in the region that same technique is exploited, that is, obtain the individual well daily oil production for not employing the region of oil reservoir.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, embodiment of the present invention will be made into one below
Step ground detailed description.
The embodiment of the invention provides a kind of method that the individual well daily oil production of oil reservoir is not employed in determination, the method packets
It includes:
Step 1: determining the analogy coefficient of the individual well daily oil production between the different zones using same technique exploitation；
Step 2: according to the analogy coefficient and the practical individual well daily oil production value in one of region, acquisition is not employed
The individual well daily oil production in the region of oil reservoir.
The present invention passes through the analogy coefficient for determining the individual well daily oil production between the different zones using same technique exploitation,
I.e. under identical mining conditions, the analogy of the individual well daily oil production between different production zones is formed, wherein an area
In situation known to practical individual well daily oil production value of the domain using same technique exploitation, by the practical individual well day for determining the region
Analogy coefficient between oil-producing magnitude and the individual well daily oil production in another region that will also the same technique will be used to exploit
This is obtained by using the individual well daily oil production value in the region of same technique exploitation, that is, obtains the individual well day for not employing the region of oil reservoir
Oil production.
As can be seen that the individual well daily oil production between different zones is carried out analogy, the different area by the embodiment of the present invention
Domain can not employ oil reservoir region and oil well region newly developed for the oil well of early development, and oil well region newly developed is
It has employed new technology the region of exploitation, the oil reservoir region of not employing of the oil well of early development is that will be opened using above-mentioned new technology
The region of hair, the two regions are that can be considered the different zones exploited using same technique.Reality in oil well region newly developed
In situation known to the individual well daily oil production value of border, by the analogy coefficient between the individual well daily oil production between two regions,
The individual well daily oil production for not employing oil reservoir region of the oil well of early development can be obtained.
It will be appreciated by persons skilled in the art that the analogy coefficient between individual well daily oil production described above refers to not
It is steady state value with the ratio between the individual well daily oil production in region between any two region, therefore in known two regions
In a region practical individual well daily oil production value in the case where, the individual well daily oil production in another region can be obtained.
The method provided through the embodiment of the present invention, solve oil well of the prior art for early development does not employ oil
Tibetan area domain needs to re-use new technology and drills out new prospect pit, pilot production well etc. and just can determine that and do not move before employing new technology
The problem of with the individual well daily oil production of oil reservoir, reduces the investment of expense, time investment, and the prior art is drilling out new spy
After well, pilot production well, if the individual well daily oil production that oil reservoir is not employed in discovery is low without extraction value, economic benefit is not achieved
When, it will cause huge expense waste, and method provided in an embodiment of the present invention then can effectively solve the problem that the problem, it is early obtaining
When the individual well daily oil production for not employing oil reservoir region of the oil well of phase exploitation is low, then the use of new technology will not be put into.
The step 1 specifically: according to the expression formula of individual well daily oil production, determine the not same district using same technique exploitation
The analogy coefficient of individual well daily oil production between domain.
Specifically, the expression formula of the individual well daily oil production are as follows:
Wherein: koCrude oil oleic permeability, 10-3μm2；
μoViscosity of crude, mPa.s；
reDrainage radius, m；rwAnd wellbore radius, m；
βo- oil volume factor；
ρo- oil density, t/m3；
Δ P- producing pressure differential, MPa；
H- core intersection, m.
Above-mentioned expression formula is that " the oil-bearing layer early stage production disclosed in " University of Petroleum's journal " such as flame is held based on Hou Lianhua, woods
Can prediction technique " expression formula in (2003,27,1,11-13), oil-producing shown by the crude oil productivity prediction model in the document
Amount is volume flow, which is scaled mass flow, can get the individual well daily oil production table in the embodiment of the present invention
Q up to formula, in the embodiment of the present invention0Unit be t/d.
On the basis of individual well daily oil production expression formula in the embodiments of the present invention, individual well daily oil production analogy is determined
Coefficient, the step 1 include: to be influenced by the steadiness parameter in the expression formula of the individual well daily oil production and by technical conditions
Parameter removal determines the analogy coefficient of the individual well daily oil production between the different zones using same technique exploitation.Specifically, institute
It states steadiness parameter and refers to oil volume factor, the parameter influenced by technical conditions refers to drainage radius, wellbore radius and production pressure
Difference.I.e. when carrying out analogy to the individual well daily oil production between different zones, which can be the oil of early development
Well does not employ oil reservoir region and oil well region newly developed, and oil well region newly developed is the area for being used for new technology
Domain, and the oil well of early development do not employ oil reservoir region be the new technology to be used region, two regions can be considered use
The different zones of same technique exploitation.Therefore when by the expression formula analogy of the individual well daily oil production in two regions, by technology item
The parameter that part is affected, drainage radius, wellbore radius and producing pressure differential can be considered as identical when using identical technology
Numerical value, therefore remove it.And steadiness parameter refers to two regions in the case where the same area, for example, the area Liang Ge
Domain is all within the scope of North China oil field.Oil volume factor between the different zones of the same regional oil reservoir is substantially
Steady state value, therefore oil volume factor can also be removed.
Steadiness parameter in the expression formula for removing individual well daily oil production described above, the ginseng influenced by technical conditions
After several and constant value, available, the individual well daily oil production analogy coefficient are as follows:
It can be seen that the parameter remained in individual well daily oil production analogy coefficient is all that can be obtained by actual monitoring
Parameter, whether the oil well of early development does not employ oil reservoir region or oil well region newly developed, can monitor and obtain
?.
The step 2, comprising: obtain the analogy coefficient lambda for having used the individual well daily oil production of A technology production zone1, wait adopt
With the analogy coefficient lambda of the individual well daily oil production for not employing oil reservoir of A technology production zone2And A technology production zone is used
Practical individual well daily oil production value, obtain the individual well daily oil production for not employing oil reservoir.
Specifically, the individual well daily oil production for not employing oil reservoir are as follows:
Wherein: ko1The crude oil oleic permeability for not employing oil reservoir of A technology production zone to be employed, 10-3μm2；
μo1The viscosity of crude for not employing oil reservoir of A technology production zone to be employed, mPa.s；
ρo1The oil density for not employing oil reservoir of-A technology production zone to be employed, t/m3；
h1The core intersection for not employing oil reservoir of A technology production zone to be employed, m；
ko2Use the crude oil oleic permeability of A technology production zone, 10-3μm2；
μo2The viscosity of crude of A technology production zone, mPa.s are used；
ρo2- use the oil density of A technology production zone, t/m3；
h2The core intersection of A technology production zone, m are used；
Q01The individual well daily oil production for not employing oil reservoir of A technology production zone to be employed, t/d；
Q02The practical individual well daily oil production value of A technology production zone, t/d are used.
Above-mentioned A technology is the new technology used, by the analogy system for determining the individual well daily oil production between two regions
Several ratio can be obtained the value for not employing the individual well daily oil production of oil reservoir.
The method that the embodiment of the present invention will be further explained is come with a specific embodiment below:
18 region of official (i.e. the oil well of early development):
The region is located at huge port jujube garden oil field, and oil-bearing layer position is the oily group of jujube IV, tries jujube IV within old 18 well of prospect pit official 1981
Oil, 7.48 side of daily fluid production rate tire out 13 tons of oil-producing, 2.4 side of water.Formation testing data only under technical conditions in 1981 at present, individual well
Daily oil production is unknown, verifies oil in place and is constantly in and does not employ state.
The region adjacent area official 18-50 (oil well A newly developed of employing new technology)
Investment exploitation in 2015, is similarly positioned in huge port jujube garden oil field, and oil-bearing layer position is one section of the Eogene hole hole Dian Zu jujube
IV oily group, individual well daily oil production are 17.64t/d.
The individual well daily oil production Q of oil reservoir is not employed to 18 region of official using the embodiment of the present inventionO1It can be according to putting into out
The individual well daily oil production Q of official's 18-50 block of hairO2It seeks.
It is respectively as follows: k by collecting the parameter in formula (3)o1To be 46.9 × 10-3μm2；μo1For 151.7mPa.s；ρo1For
0.8699t/m3；h1For 16m；ko2It is 96.5 × 10-3μm2；μo2For 224.7mPa.s；ρo2For 0.8841t/m3；h2For 16.5m；
QO2For 17.64t/d.
According to formula (3) it can be concluded that QO1For 12.1t/d.
It implements new technology A to 18 region of official to exploit, obtaining practical individual well daily oil production after actually exploitation is
11.5t/d, it can be seen that its individual well daily oil production Q obtained with the method provided through the embodiment of the present inventionO1Value more connect
Closely.The individual well daily oil production precision for not employing oil reservoir for illustrating that the method provided through the embodiment of the present invention obtains is high, coincidence rate
It is high.
All the above alternatives can form the alternative embodiment of the disclosure, herein no longer using any combination
It repeats one by one.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of method that the individual well daily oil production of oil reservoir is not employed in determination, which is characterized in that the described method includes:
Step 1: determining the analogy coefficient of the individual well daily oil production between the different zones using same technique exploitation；
Step 2: according to the analogy coefficient and the practical individual well daily oil production value in one of region, oil reservoir is not employed in acquisition
Region individual well daily oil production.
2. the method according to claim 1, wherein the step 1 specifically: according to the table of individual well daily oil production
Up to formula, the analogy coefficient of the individual well daily oil production between the different zones using same technique exploitation is determined.
3. according to the method described in claim 2, it is characterized in that, the expression formula of the individual well daily oil production are as follows:
Wherein: koCrude oil oleic permeability, 10-3μm2；
μoViscosity of crude, mPa.s；
reDrainage radius, m；rwAnd wellbore radius, m；
βo- oil volume factor；
ρo- oil density, t/m3；
Δ P- producing pressure differential, MPa；
H- core intersection, m.
4. according to the method described in claim 3, it is characterized in that, the step 1 includes: by the table of the individual well daily oil production
Removed up to the steadiness parameter in formula and the parameter influenced by technical conditions, determine using same technique exploitation different zones it
Between individual well daily oil production analogy coefficient.
5. described by skill according to the method described in claim 4, it is characterized in that, the steadiness parameter refers to oil volume factor
The parameter that art condition influences refers to drainage radius, wellbore radius and producing pressure differential.
6. according to the method described in claim 5, it is characterized in that, the analogy coefficient of the individual well daily oil production are as follows:
7. according to the method described in claim 6, it is characterized in that, the step 2, comprising:
Obtain the analogy coefficient lambda for having used the individual well daily oil production of A technology production zone1, A technology production zone to be employed not
Employ the analogy coefficient lambda of the individual well daily oil production of oil reservoir2And the practical individual well daily oil production of A technology production zone is used
Value obtains the individual well daily oil production for not employing oil reservoir.
8. the method according to the description of claim 7 is characterized in that the individual well daily oil production for not employing oil reservoir are as follows:
Wherein: ko1The crude oil oleic permeability for not employing oil reservoir of A technology production zone to be employed, 10-3μm2；
μo1The viscosity of crude for not employing oil reservoir of A technology production zone to be employed, mPa.s；
ρo1The oil density for not employing oil reservoir of-A technology production zone to be employed, t/m3；
h1The core intersection for not employing oil reservoir of A technology production zone to be employed, m；
ko2Use the crude oil oleic permeability of A technology production zone, 10-3μm2；
μo2The viscosity of crude of A technology production zone, mPa.s are used；
ρo2- use the oil density of A technology production zone, t/m3；
h2The core intersection of A technology production zone, m are used；
Q01The individual well daily oil production for not employing oil reservoir of A technology production zone to be employed, t/d；
Q02The practical individual well daily oil production value of A technology production zone, t/d are used.
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Cited By (1)
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| CN115199245A (en) * | 2021-04-13 | 2022-10-18 | 中国石油天然气股份有限公司 | Chemical flooding liquid production strength determination method |
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