CN104632150B - The method that the offshore oilfield difference reasonable Liquid output of well group determines - Google Patents
The method that the offshore oilfield difference reasonable Liquid output of well group determines Download PDFInfo
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- CN104632150B CN104632150B CN201310564615.2A CN201310564615A CN104632150B CN 104632150 B CN104632150 B CN 104632150B CN 201310564615 A CN201310564615 A CN 201310564615A CN 104632150 B CN104632150 B CN 104632150B
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- 239000007788 liquid Substances 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 claims abstract description 33
- 238000012360 testing method Methods 0.000 claims abstract description 14
- 238000013461 design Methods 0.000 claims abstract description 4
- 238000013139 quantization Methods 0.000 claims abstract description 4
- 238000004458 analytical method Methods 0.000 claims description 7
- 230000035699 permeability Effects 0.000 claims description 6
- 238000011160 research Methods 0.000 claims description 5
- 238000004364 calculation method Methods 0.000 claims description 4
- 238000004088 simulation Methods 0.000 claims description 4
- 238000011084 recovery Methods 0.000 abstract description 10
- 239000003129 oil well Substances 0.000 abstract description 4
- 238000011161 development Methods 0.000 description 6
- 239000000284 extract Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
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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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
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Abstract
The present invention provides a kind of method that offshore oilfield difference reasonable Liquid output of well group determines, the method that the offshore oilfield difference reasonable Liquid output of well group determines includes：Step 1, analyzes the otherness of different well groups, sets up typical well group geological model；Step 2, according to the typical well group model set up, studies each single factor test to reasonable production pressure and the affecting laws of reasonable liquid measure；Step 3, the influence degree to each single factor test carries out quantization sequence, clearly influences the principal element of reasonable production pressure and reasonable liquid measure；And step 4, each principal element is considered, orthogonal design multiple scheme optimizes calculating, draws reasonable production pressure and reasonable liquid measure consults plate.The method that the offshore oilfield difference reasonable Liquid output of well group determines is solved under the conditions of multifactor impact, and the oil well reasonable production pressure and liquid measure of marine difference well group are difficult to the problem for determining, so as to realize that offshore oilfield increases substantially the purpose of recovery ratio.
Description
Technical field
The present invention relates to oil field development technical field, a kind of offshore oilfield difference reasonable Liquid output of well group is especially related to
The method of determination.
Background technology
The marine chengdao oilfield of triumph is the 1 year oil-producing megaton oil of China pole neritic area input development ＆ construction
Field.Oil field, by the end of the year 2012, reported verify 4.05 hundred million tons of oil in place, cumulative oil production altogether in input exploitation in 1993
35640000 tons, to ensure that national energy security is made that significant contribution.
But with the marine similar oil reservoir contrast of foreign countries, chengdao oilfield still suffers from that individual well liquid measure is low, the low problem of rate of oil production,
In the platform useful life phase, overall recovery ratio is relatively low, causes ample resources to waste, and is extremely not suitable with Offshore development demand.Therefore
Individual well liquid measure how is reasonably increased substantially, recovery ratio in the offshore oilfield platform term of validity is improved, as In Shengli Sea Oil Field
The subject matter that exploitation faces.
Influenceed by development scheme, marine is different to the definition of reasonable liquid measure with onshore oil field, and producing pressure differential is shadow
The key factor of liquid measure is rung, producing pressure differential is bigger, and individual well liquid measure is bigger, but producing pressure differential can not be excessive, one is by strata pressure
And DP technology limitation, two is excessive producing pressure differential, and initial stage rate of oil production is too high, and production decline is fast, can cause ground installation
Huge waste；And producing pressure differential is too small, then can cause that recovery percent of reserves is far below ultimate recovery in the platform life span term of validity, causes
The waste of subterranean resource.
Understand according to more than, offshore oilfield oil well reasonable production pressure and liquid measure are defined as：In certain reservoir condition and open
Under hair technical policy, make in the evaluation phase recovery percent of reserves close to the producing pressure differential and liquid measure during recovery ratio.
Due to by depositional model, development scheme, the influence of exploitation history, the anisotropism of different well groups, aqueous, well pattern are complete
Kind degree, well spacing are uneven, the isoparametric otherness of oil layer pollution is larger, and these factors to the reasonable production pressure of oil well and
Liquid measure can produce different influences, therefore the influence rule in the urgent need to research factors above to reasonable production pressure and liquid measure
Rule, quantifies its influence degree, and reasonable production pressure and liquid measure are determined for different well groups, realizes that underground, ground resource are most preferably sharp
With raising whole development effect and economic benefit.For this rationally produces liquid we have invented a kind of new offshore oilfield difference well group
The method for determining is measured, above technical problem is solved.
The content of the invention
Under the conditions of it is an object of the invention to provide one kind solution multifactor impact, the oil well of marine difference well groups is rationally produced
Pressure difference and liquid measure are difficult to determination problem, so as to realize that offshore oilfield increases substantially the offshore oilfield difference well of the purpose of recovery ratio
The method that the reasonable Liquid output of group determines.
The purpose of the present invention can be achieved by the following technical measures：The offshore oilfield difference reasonable Liquid output of well group determines
Method, the method that the offshore oilfield difference reasonable Liquid output of well group determines includes：Step 1, analyzes the otherness of different well groups, builds
Vertical typical case's well group geological model；Step 2, according to the typical well group model set up, study each single factor test to reasonable production pressure and
The affecting laws of reasonable liquid measure；Step 3, the influence degree to each single factor test carries out quantization sequence, clearly influences rationally production pressure
Difference and the rationally principal element of liquid measure；And step 4, each principal element is considered, orthogonal design multiple scheme carries out excellent
Change and calculate, draw reasonable production pressure and reasonable liquid measure consults plate.
The purpose of the present invention can also be achieved by the following technical measures：
In step 1, signature analysis is carried out to different well group anisotropism, aqueous, well pattern improvement degree, well spacing factor,
Set up typical well group model.
In step 2, by numerical simulation calculation, research stratum is heterogeneous, well pattern improvement degree, well spacing, aqueous, bias
Away from, permeability, each single factor test of skin factor be to reasonable production pressure and the affecting laws of reasonable liquid measure.
In step 3, zero dimension influence coefficient is introduced, the influence degree of each single factor test is all normalized between 0~1, entered
Com-parison and analysis between each single factor test of row, it is determined that the principal element of influence reasonable production pressure and reasonable liquid measure.
Step 4 also includes, after reasonable pressure and reasonable liquid measure access plate is drawn, it is determined that flow is consulted, it is many to determine
Reasonable production pressure and liquid measure under the influence of factor.
The method that the offshore oilfield difference reasonable Liquid output of well group in the present invention determines, takes into full account different well group differences
Property, different single factor tests are have studied to reasonable production pressure and the affecting laws of liquid measure, and are drawn under the conditions of multifactor impact rationally
The access plate of producing pressure differential and liquid measure, so that scene is consulted, the method is convenient and swift, is especially suitable for live application, is marine
Oil field high water cut rate increases substantially recovery ratio there is provided technical support.The method is applied in chengdao oilfield, to 28
The reasonable production pressure and liquid measure of the low liquid well of mouth optimize research, it is determined that reasonable extract scheme, by field conduct, 28 mouthfuls
The average liquid measure of extract well rises to 102.2t/d from 38.8t/d, day oil rise to 33t/d from 13t/d, averagely increase day by day oily 20t/d,
It is aqueous to drop to 63% from 66.4%, increase 3.6 ten thousand tons of oil to having tired out at present, it is contemplated that recovery ratio improves 5% in the evaluation phase, and extract is obtained
Good result, is that chengdao oilfield Guantao group is carried out extract by wellblock and had laid a good foundation in order comprehensively.
Brief description of the drawings
Fig. 1 is the flow of a specific embodiment of the method that the offshore oilfield difference reasonable Liquid output of well group of the invention determines
Figure；
Fig. 2 is oil field typical case's well group three-dimensional geological model in one embodiment of the invention；
It in one embodiment of the invention is reasonable production pressure and liquid measure and permeability grade relation curve that Fig. 3 is；
Fig. 4 be one embodiment of the invention in for producing pressure differential zero dimension influence index contrast curve；
It in one embodiment of the invention is reasonable production pressure and permeability grade Core analysis that Fig. 5 is；
Fig. 6 be one embodiment of the invention in be eccentric throw, well spacing correction factor plate；
Fig. 7 be one embodiment of the invention in be moisture content, skin factor correction factor plate.
Specific embodiment
It is cited below particularly to go out preferably to implement to enable above and other objects, features and advantages of the invention to become apparent
Example, and coordinate institute's accompanying drawings, it is described in detail below.
As shown in figure 1, Fig. 1 is the flow chart of the method that the offshore oilfield difference reasonable Liquid output of well group of the invention determines.
In step 101, the otherness of different well groups is analyzed, set up representative geological model.In one embodiment,
According to the factor signature analysis such as different well group anisotropism, aqueous, well pattern improvement degree, well spacing, the typical case set up in similar Fig. 2
Well group model.Flow enters into step 102.
In step 102, by numerical simulation calculation, research stratum is heterogeneous, well pattern improvement degree, well spacing, aqueous, bias
Away from, the single factor test such as permeability, skin factor to reasonable production pressure and the affecting laws of reasonable liquid measure.In one embodiment, such as
Shown in Fig. 3, according to typical well group model is set up, numerical simulation calculation obtains reasonable production pressure and liquid measure and becomes with permeability grade
Law, other influence factors can also be calculated different rules.Flow enters into step 103.
In step 103, zero dimension influence coefficient is introduced, the influence degree to each factor carries out quantization sequence, specifies shadow
Ring the principal element of reasonable production pressure and reasonable liquid measure.In one embodiment, as shown in figure 4, introducing zero dimension influence coefficient,
Each influence factor and influence degree are all normalized between 0~1, the com-parison and analysis between different factors are carried out, it is determined that influence is closed
The principal element of reason producing pressure differential and reasonable liquid measure.Flow enters into step 104.
In step 104, each principal element is considered, orthogonal design multiple scheme optimizes calculating, draws reasonable
Producing pressure differential and reasonable liquid measure consult plate.After reasonable pressure and liquid measure access plate is drawn, it is determined that consult flow, can
The quick reasonable production pressure and liquid measure determined under multifactor impact.In one embodiment, as shown in Figure 5-Figure 7, by each Dan Yin
Element considers, and draws reasonable production pressure and liquid measure series consults plate, convenient scene application.
Claims (1)
1. the method that the reasonable Liquid output of offshore oilfield difference well group determines, it is characterised in that offshore oilfield difference well group is reasonable
The method that Liquid output determines includes：
Step 1, analyzes the otherness of different well groups, sets up typical well group geological model；
In this step, signature analysis is carried out to different well group anisotropism, aqueous, well pattern improvement degree, well spacing factor, is set up
Typical well group model；
Step 2, according to the typical well group model set up, studies influence rule of each single factor test to reasonable production pressure and reasonable liquid measure
Rule；
In this step, by numerical simulation calculation, stratum is heterogeneous for research, well pattern improvement degree, well spacing, aqueous, eccentric throw,
Each single factor test of permeability, skin factor is to reasonable production pressure and the affecting laws of reasonable liquid measure；
Step 3, the influence degree to each single factor test carries out quantization sequence, clearly influences the master of reasonable production pressure and reasonable liquid measure
Want factor；
In this step, zero dimension influence coefficient is introduced, the influence degree of each single factor test is all normalized between 0~1, carried out each
Com-parison and analysis between single factor test, it is determined that the principal element of influence reasonable production pressure and reasonable liquid measure；
Step 4, each principal element is considered, and orthogonal design multiple scheme optimizes calculating, draws reasonable production pressure
And rationally liquid measure consults plate, it is then determined that flow is consulted, to determine the reasonable production pressure and liquid measure under multifactor impact.
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| CN106545335B (en) * | 2016-10-31 | 2019-04-09 | 中国石油天然气股份有限公司 | Method for determining failure type development reasonable production pressure difference of tight oil reservoir |
| CN106640001A (en) * | 2016-11-04 | 2017-05-10 | 中国海洋石油总公司 | Profile control measure effect evaluation method suitable for offshore oilfield |
| CN109025920B (en) * | 2018-08-08 | 2020-12-11 | 中国石油天然气股份有限公司 | Method for improving yield of horizontal well in low-permeability oil field |
| CN110543673A (en) * | 2019-07-26 | 2019-12-06 | 中国石油化工股份有限公司 | Method for balanced optimization of liquid production structure of offshore oil reservoir well group unit |
| CN111749664B (en) * | 2020-07-01 | 2022-06-07 | 中国海洋石油集团有限公司 | Oil field whole-course chemical flooding combined take-over opportunity optimization method and system |
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| CA2842791C (en) * | 2011-07-25 | 2017-03-14 | Halliburton Energy Services, Inc. | Automatic optimizing methods for reservoir testing |
| CN103352693B (en) * | 2013-06-20 | 2016-12-28 | 中国石油天然气集团公司 | A kind of output prediction system based on oily content and method thereof |
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