CN101457639B - Method for measuring and adjusting oilfield injection well by utilizing indication curve - Google Patents
Method for measuring and adjusting oilfield injection well by utilizing indication curve Download PDFInfo
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- CN101457639B CN101457639B CN2008101897678A CN200810189767A CN101457639B CN 101457639 B CN101457639 B CN 101457639B CN 2008101897678 A CN2008101897678 A CN 2008101897678A CN 200810189767 A CN200810189767 A CN 200810189767A CN 101457639 B CN101457639 B CN 101457639B
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- 238000002347 injection Methods 0.000 title claims abstract description 43
- 239000007924 injection Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 90
- 238000012360 testing method Methods 0.000 claims abstract description 33
- 238000010521 absorption reaction Methods 0.000 claims abstract description 23
- 238000005516 engineering process Methods 0.000 abstract description 16
- 239000002332 oil field water Substances 0.000 abstract 1
- 230000003750 conditioning effect Effects 0.000 description 6
- 235000015111 chews Nutrition 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004836 empirical method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The invention relates to a method utilizing an indicative curve for testing and adjusting an oilfield water injection well, which mainly solves the problem of high cost of the existing test and adjustment of a water well. The method is characterized in that two tests are respectively and sequentially carried out according to the whole well injection allocation amount and 150 percent of injection allocation amount; according a flowing pressure value and a flow capacity value gained through the tests, an overflowing pressure loss value is checked out to gain a stratum average pressure figure and a moisture absorption coefficient of the stratum in contrast with a technologically designed water nozzle curve picture board ; when one water nozzle is kept unchanged and the injection allocation amount satisfies the geology requirements, the water nozzle curve picture board is checked to gain the overflowing pressure loss value, and then the flowing pressure value and the overflowing pressure loss value in front of the water nozzle of the layer section are obtained, and finally, the diameter of the water nozzle are obtained. The method can realize fast test and adjustment, does not change the original water injection pipe column technology and the water injection technology, and has no cost input.
Description
Technical field:
The present invention relates to the measuring and regulating method of water injection well in oil fields, especially a kind of indicative curve that utilizes is surveyed accent water injection well in oil fields method.
Background technology:
Water filling is that the oil field keeps strata pressure, improves the effective way of original recovery ratio, and well is surveyed and transferred then is the important work progress of keeping well injecting enough water, injecting good water.Needing to change water in the well survey accent process chews, and replacing water is chewed in surveying the accent process and has been taken most of effective time, and determine that how changing water chews, the oil field generally adopts examination to play method or empirical method now, changing water, to chew efficient lower, the debugging water injection well of 3 intervals flatly on average needs 3～4 days effective time, and water injection well allotment efficient is very low.In order to address this problem, exploitation on the oil field, used and survey to have transferred interlock to survey conditioning technology and the memory-type water yield is surveyed conditioning technology, surveyed that to transfer interlock to survey conditioning technology be to cooperate special-purpose mine water to chew adjuster by the single core steel pipe of special use cable well testing truck to realize that instrument is once gone into the well and finish a kind of survey conditioning technology of all commissioning process; It is to adopt special flow test of common well testing truck down-hole and flow regulator to realize that down-hole motorized adjustment flow satisfies a kind of survey conditioning technology of multi-zone flow regulating that the memory-type water yield is surveyed conditioning technology, but above-mentioned two kinds of technology all need to drop into certain vehicle or instrument cost, and cost is higher.
Summary of the invention:
Survey cost height, the inefficient deficiency of transferring in order to overcome existing well, the invention provides a kind of indicative curve that utilizes and survey accent water injection well in oil fields method, this method can realize surveying fast transferring, and does not change original water injection string technology and water injection technology, and the cost free input.
Technical scheme of the present invention is: a kind of indicative curve that utilizes is surveyed accent water injection well in oil fields method, comprises the steps:
1. with under the instrument correspondence to not holding interval, carry out the test first time according to full well injection allocation amount, instrument records the stream pressure value (A of first group of n interval on step by step
1 1～n) and flow value (B
1 1～n), find flow value (B according to technological design water nozzle curve plate
1 1～n) overcurrent pressure loss value (C when correspondence flows through each interval water nozzle
1 1～n), and stream pressure value (A
1 1～n), the overcurrent pressure loss (C of water nozzle
1 1～n) value, the stratum seepage pressure loss value (D
1 1～n) and stratum average pressure (P
1～ n) satisfy formula (1), seepage pressure loss value (D
1 1～n) can be expressed as B
1 1～n/ stratum absorption coerfficient (J
1～n);
2. with under the instrument correspondence to not holding interval, carry out the test second time according to full well injection allocation amount 150%, instrument records the stream pressure value (A of second group of n interval on step by step
2 1～n) and flow value (B
2 1～n), find flow value (B according to technological design water nozzle curve plate
2 1～n) the overcurrent pressure loss (C when correspondence flows through each interval water nozzle
2 1～n) value, and stream pressure value (A
2 1～n), the overcurrent pressure loss value (C of water nozzle
2 1～n), the seepage pressure loss value (D on stratum
2 1～n) and stratum average pressure (P
1～n) satisfy formula (2), seepage pressure loss value (D
2 1～n) can be expressed as B
2 1～ n/ stratum absorption coerfficient (J
1～n);
3. according to the data that record for twice, and each interval all has following relational expression:
A
1 1～n=C
1 1～n+ B
1 1～n/ stratum absorption coerfficient (J
1～n)+P
1～n(1)
A
2 1～n=C
2 1～n+ B
2 1～n/ stratum absorption coerfficient (J
1～n)+P
1～n(2)
Formula (1) is subtracted each other the stratum absorption coerfficient (J that can obtain each interval with (2)
1～n), i.e. the stratum water absorbing capacity of each interval, and then through type (1) or (2) obtain the stratum average pressure (P of each interval
1～n);
4. the water nozzle with m interval remains unchanged, and is satisfying the injection allocation amount B of geologic requirements
mThe time, look into technological design water nozzle curve plate and can obtain overcurrent pressure loss value (C
m), with stratum average pressure loss P
m, overcurrent pressure loss value (C
m) and seepage pressure loss (B
m/ J
m) carry out addition, obtain the stream pressure value A that should have before this interval water nozzle
mUtilize between each interval drift angle when testing for the first time can obtain the stream pressure value that should have before other k interval water nozzle, A then
k=A
m-(A
1 m-A
1 k), utilize this stream pressure value A again
kDeduct stratum average pressure loss P
kWith seepage pressure loss (B
k/ J
k), promptly obtain k layer overcurrent pressure loss value C
k=A
k-(P
k+ B
k/ J
k), just can find the k layer according to water nozzle curve plate equally, satisfying the injection allocation amount B of geologic requirements
kThe time overcurrent pressure loss value be (C
k) the curvilinear characteristic value be the water nozzle diameter.
The present invention has following beneficial effect: owing to take such scheme, the information of never holding interval upwards to test each interval successively, can obtain each interval stream pressure value and flow value, flow through the overcurrent pressure loss value behind each interval water nozzle and obtain the seepage pressure loss value and the stratum average pressure of each interval of this water nozzle correspondence, the convenient flow of grasping water nozzle, and then determine that each interval water chews size, overcome this area difficult problem of puzzlement always for many years; Do not change simultaneously the tubing string technology and the test technology of original water injection well, no matter how many intervals only need test twice, method is simple, is easy to promote, and surveys between timing and can foreshorten to 2.5 days, has improved the well layering greatly and has surveyed accent efficient, the corresponding reduction of cost.
Description of drawings:
Accompanying drawing 1 is this method on-the-spot test interval schematic diagram;
Accompanying drawing 2 is the technological design water nozzle curve plates before the invention process.
The specific embodiment:
The invention will be further described below in conjunction with specific embodiment:
The present invention comes from the inventor to the measuring and regulating method of water injection well in oil fields in the oil field prospecting and the new knowledge of on-the-spot actual test effect analysis.
A kind of indicative curve that utilizes is surveyed accent water injection well in oil fields method, comprises the steps:
1. with under the instrument correspondence to not holding interval, carry out the test first time according to full well injection allocation amount, instrument records the stream pressure value (A of first group of n interval on step by step
1 1～n) and flow value (B
1 1～n), find flow value (B according to technological design water nozzle curve plate
1 1～n) overcurrent pressure loss value (C when correspondence flows through each interval water nozzle
1 1～n), and stream pressure value (A
1 1～n), the overcurrent pressure loss (C of water nozzle
1 1～n) value, the stratum seepage pressure loss value (D
1 1～n) and stratum average pressure (P
1～ n) satisfy formula (1), seepage pressure loss value (D
1 1～n) can be expressed as B
1 1～n/ stratum absorption coerfficient (J
1～n);
2. with under the instrument correspondence to not holding interval, carry out the test second time according to full well injection allocation amount 150%, instrument records the stream pressure value (A of second group of n interval on step by step
2 1～n) and flow value (B
2 1～n), find flow value (B according to technological design water nozzle curve plate
2 1～n) the overcurrent pressure loss (C when correspondence flows through each interval water nozzle
2 1～n) value, and stream pressure value (A
2 1～n), the overcurrent pressure loss value (C of water nozzle
2 1～n), the seepage pressure loss value (D on stratum
2 1～n) and stratum average pressure (P
1～n) satisfy formula (2), seepage pressure loss value (D
2 1～n) can be expressed as B
2 1～ n/ stratum absorption coerfficient (J
1～n);
3. according to the data that record for twice, and each interval all has following relational expression:
A
1 1～n=C
1 1～n+ B
1 1～n/ stratum absorption coerfficient (J
1～n)+P
1～n(1)
A
2 1～n=C
2 1～n+ B
2 1～n/ stratum absorption coerfficient (J
1～n)+P
1～n(2)
Formula (1) is subtracted each other the stratum absorption coerfficient (J that can obtain each interval with (2)
1～n), i.e. the stratum water absorbing capacity of each interval, and then through type (1) or (2) obtain the stratum average pressure (P of each interval
1～n); Because the stratum average pressure of each interval equates in twice test, so the stratum average pressure (P of twice test
1～n) be identical;
4. the water nozzle with m interval remains unchanged, and is satisfying the injection allocation amount B of geologic requirements
mThe time, look into technological design water nozzle curve plate and can obtain overcurrent pressure loss value (C
m), with stratum average pressure loss P
m, overcurrent pressure loss value (C
m) and seepage pressure loss (B
m/ J
m) carry out addition, obtain the stream pressure value A that should have before this interval water nozzle
mUtilize between each interval drift angle when testing for the first time can obtain the stream pressure value that should have before other k interval water nozzle, A then
k=A
m-(A
1 m-A
1 k), utilize this stream pressure value A again
kDeduct stratum average pressure loss P
kWith seepage pressure loss (B
k/ J
k), promptly obtain k layer overcurrent pressure loss value C
k=A
k-(P
k+ B
k/ J
k), just can find the k layer according to water nozzle curve plate equally, satisfying the injection allocation amount B of geologic requirements
kThe time overcurrent pressure loss value be (C
k) the curvilinear characteristic value be the water nozzle diameter.
Grand celebration a bite water injection well is tested, and its interval is 2, and the n in the technical scheme is 2, its working design require the injection allocation amount see Table 1:
The requirement of table 1 water injection well working design
| Interval | The degree of depth (m) | Injection allocation amount (m 3/d) | Down-hole Yuan Shui chews (mm) |
| I | 1000 | 17 | 3.4 |
| II | 1020 | 8 | 2.0 |
Accompanying drawing 1 shown in 2, is specifically implemented as follows in conjunction with the accompanying drawings:
1. with under the instrument correspondence to not holding interval (II section), according to full well injection allocation amount 25m
3/ d (promptly being the 18+8 gained) carries out the test first time, surveys on corresponding step by step each interval of instrument, obtains the stream pressure value A of one group of 2 interval
1 1Be 25.3Mpa, A
1 2Be 25.1Mpa, and flow value B
1 1Be 17.7m
3/ d, B
1 2Be 10.3m
3/ d finds the overcurrent pressure loss value C that flows through behind each interval water nozzle according to technological design water nozzle curve plate (seeing accompanying drawing 2)
1 1Be 0.6393Mpa, C
1 2Be 1.0189Mpa, with above data substitution formula (3), (5);
2. with under the instrument correspondence to not holding interval (II section), (be 37.5m according to full well injection allocation amount 150%
3/ d) carrying out the test second time, instrument is gone up step by step and is surveyed, and obtains the stream pressure value A of second group of 2 interval
2 1Be 29.9Mpa, A
2 2Be 30.1Mpa, and flow value B
2 1Be 24.0m
3/ d, B
2 2Be 21.9m
3/ d finds the overcurrent pressure loss value C that flows through behind each interval water nozzle according to technological design water nozzle curve plate (seeing accompanying drawing 2)
2 1Be 1.1239Mpa, C
2 2Be 3.8499Mpa, with above data substitution formula (4), (6);
3. according to the data that record for twice, corresponding have following relational expression with one deck:
For the I layer,
A
1 1=C
1 1+ B
1 1/ stratum absorption coerfficient (J
1)+P
1(3)
A
2 1=C
2 1+ B
2 1/ stratum absorption coerfficient (J
1)+P
1(4)
Formula (3) is subtracted each other the stratum absorption coerfficient J that can obtain the I interval with (4)
1Be 1.4599m
3/ d.MPa obtains the stratum water absorbing capacity of I interval, and then through type (1) or (2) obtain the stratum average pressure (P of each interval
1Be 12.336MPa); Because the stratum average pressure of 2 intervals equates in twice test, so the stratum average pressure P of twice test
1Be identical, be 12.336MPa;
For the II layer,
A
1 2=C
1 2+ B
1 2/ stratum absorption coerfficient (J
2)+P
2(5)
A
2 2=C
2 2+ B
2 2/ stratum absorption coerfficient (J
2)+P
2(6)
Formula (5) is subtracted each other the stratum absorption coerfficient J that can obtain the II interval with (6)
1Be 5.8911m
3/ d.MPa obtains the stratum water absorbing capacity of II interval, and then through type (1) or (2) obtain the stratum average pressure (P of each interval
2Be 22.5326MPa);
4. require (seeing Table 1), the injection allocation amount B that can find according to working design in the oil field geologic requirement
2Be 8m
3/ d, and when keeping II interval water nozzle (diameter 2.0mm) constant, can find due overcurrent pressure loss value C according to technological design water nozzle curve plate (seeing accompanying drawing 2)
2Be 0.67088Pma, be not the data that obtain of actual test but require the overcurrent pressure loss value in plate, found, make sure to keep in mind the two and can not obscure according to geological design.
For the II layer,
A
2=C
2+ B
2/ stratum absorption coerfficient (J
2)+P
2(7)
Through type (7) obtains the stream pressure value A under the actual geologic requirements injection allocation of this interval amount
2Be 24.5615Pma; Utilize the drift angle of these two intervals can obtain the stream pressure value that should have before another interval (I interval) water nozzle then.
Stream pressure value A
1Stream pressure value A under the=geologic requirements injection allocation amount
2-poor (the A of each interval stream pressure value when testing for the first time
1 1-A
1 2)
A
1＝A
2-(A
1 1-A
1 2)
＝24.5615-(25.3-25.1)
＝24.3615MPa
C
1＝A
1-(B
1/J
1+P
1)
＝24.3615-(17/1.4599+12.336)＝0.38087MPa
According to technological design water nozzle curve plate (seeing accompanying drawing 2), at the injection allocation amount B of geologic requirements
1Be 17m
3/ d, the overcurrent pressure loss is C
1The curvilinear characteristic value of=0.38087MPa is 4.0mm, and promptly this well is when keeping inclined to one side II water nozzle 2.0mm motionless, and the I water nozzle should be replaced with 4.0mm by 3.4mm partially.
For the disconnected geological design of multilayer, method of testing is the same, is 5 as interval, and then n is 5, interval is 3, then n is 3, and method is identical, no matter what intervals, test just needs 2 times test, method is simple and practical, does not change the tubing string technology and the test technology of original water injection well simultaneously, has overcome this area difficult problem of puzzlement narration more than this does not do always for many years.
Claims (1)
1. one kind is utilized indicative curve to survey accent water injection well in oil fields method, and it is characterized in that: this method comprises the steps:
1. with under the instrument correspondence to terminal interval, carry out first time according to full well injection allocation amount and test, instrument records the stream pressure value A of first group of n interval on step by step
1 1～nAnd flow value B
1 1～n, find flow value B according to technological design water nozzle curve plate
1 1～nOvercurrent pressure loss value C when correspondence flows through each interval water nozzle
1 1～n, and stream pressure value A
1 1～n, water nozzle overcurrent pressure loss C
1 1～nThe seepage pressure loss value D on value, stratum
1 1～nAnd stratum average pressure P
1～nSatisfy formula (1), seepage pressure loss value D
1 1～nCan be expressed as B
1 1～n/ stratum absorption coerfficient J
1～n
2. with under the instrument correspondence to terminal interval, carry out second time according to full well injection allocation amount 150% and test, instrument records the stream pressure value A of second group of n interval on step by step
2 1～nAnd flow value B
2 1～n, find flow value B according to technological design water nozzle curve plate
2 1～nOvercurrent pressure loss C when correspondence flows through each interval water nozzle
2 1～nValue, and stream pressure value A
2 1～n, water nozzle overcurrent pressure loss value C
2 1～n, the stratum seepage pressure loss value D
2 1～nAnd stratum average pressure P
1～nSatisfy formula (2), seepage pressure loss value D
2 1～nCan be expressed as B
2 1～n/ stratum absorption coerfficient J
1～n
3. according to the data that record for twice, and each interval all has following relational expression:
A
1 1～n=C
1 1～n+ B
1 1～n/ stratum absorption coerfficient J
1～n+ P
1～n(1)
A
2 1～n=C
2 1～n+ B
2 1～n/ stratum absorption coerfficient J
1～n+ P
1～n(2)
Formula (1) is subtracted each other the stratum absorption coerfficient J that can obtain each interval with (2)
1～n, i.e. the stratum water absorbing capacity of each interval, and then through type (1) or (2) obtain the stratum average pressure P of each interval
1～n
4. the water nozzle with m interval remains unchanged, and is satisfying the injection allocation amount B of geologic requirements
mThe time, look into technological design water nozzle curve plate and can obtain overcurrent pressure loss value C
m, with stratum average pressure loss P
m, overcurrent pressure loss value C
mAnd seepage pressure loss B
m/ J
mCarry out addition, obtain the stream pressure value A that should have before this interval water nozzle
mUtilize between each interval drift angle when testing for the first time can obtain the stream pressure value that should have before other k interval water nozzle, A then
k=A
m-(A
1 m-A
1 k), utilize this stream pressure value A again
kDeduct stratum average pressure loss P
kWith seepage pressure loss B
k/ J
k, promptly obtain k layer overcurrent pressure loss value C
k=A
k-(P
k+ B
k/ J
k), just can find the k layer according to water nozzle curve plate equally, satisfying the injection allocation amount B of geologic requirements
kThe time overcurrent pressure loss value be C
kThe curvilinear characteristic value be the water nozzle diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101897678A CN101457639B (en) | 2008-12-31 | 2008-12-31 | Method for measuring and adjusting oilfield injection well by utilizing indication curve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101897678A CN101457639B (en) | 2008-12-31 | 2008-12-31 | Method for measuring and adjusting oilfield injection well by utilizing indication curve |
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| Publication Number | Publication Date |
|---|---|
| CN101457639A CN101457639A (en) | 2009-06-17 |
| CN101457639B true CN101457639B (en) | 2011-12-28 |
Family
ID=40768735
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101897678A Active CN101457639B (en) | 2008-12-31 | 2008-12-31 | Method for measuring and adjusting oilfield injection well by utilizing indication curve |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150460B (en) * | 2016-08-25 | 2020-02-07 | 中国石油天然气股份有限公司 | Water injection well layered measurement and adjustment process device and measurement and adjustment method thereof |
| CN108614908B (en) * | 2016-12-13 | 2022-01-04 | 中国石油天然气股份有限公司 | Method for selecting eccentric separated-injection multi-stage water nozzle |
| CN109978303B (en) * | 2017-12-28 | 2021-07-02 | 中国石油天然气股份有限公司 | Method and device for determining exploitation measures of heavy oil reservoir and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1415942A (en) * | 2002-11-13 | 2003-05-07 | 大庆油田有限责任公司 | Method for measuring continuous current flux of separate injection well |
| CN1601053A (en) * | 2004-10-12 | 2005-03-30 | 大庆油田有限责任公司 | Method for measuring and adjusting flux of separated-zone water infection oil field |
| EP1327054B1 (en) * | 2000-09-22 | 2006-11-02 | GUDMUNDSSON, Jon Steinar | Method for determining pressure profiles in wellbores, flowlines and pipelines, and use of such method |
-
2008
- 2008-12-31 CN CN2008101897678A patent/CN101457639B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1327054B1 (en) * | 2000-09-22 | 2006-11-02 | GUDMUNDSSON, Jon Steinar | Method for determining pressure profiles in wellbores, flowlines and pipelines, and use of such method |
| CN1415942A (en) * | 2002-11-13 | 2003-05-07 | 大庆油田有限责任公司 | Method for measuring continuous current flux of separate injection well |
| CN1601053A (en) * | 2004-10-12 | 2005-03-30 | 大庆油田有限责任公司 | Method for measuring and adjusting flux of separated-zone water infection oil field |
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| CN101457639A (en) | 2009-06-17 |
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Effective date of registration: 20211227 Address after: 163453 Heilongjiang Province, Daqing City Ranghulu District No. 233 South Central Avenue Patentee after: Daqing Oilfield Co.,Ltd. Patentee after: PetroChina Company Limited Address before: 163001 Heilongjiang Province, Daqing City Ranghulu District No. 233 South Central Avenue Patentee before: Daqing Oilfield Co.,Ltd. |
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