CN1517510A - Method for hierarchical regulating water flow of water injection well in oil field - Google Patents
Method for hierarchical regulating water flow of water injection well in oil field Download PDFInfo
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- CN1517510A CN1517510A CNA031003044A CN03100304A CN1517510A CN 1517510 A CN1517510 A CN 1517510A CN A031003044 A CNA031003044 A CN A031003044A CN 03100304 A CN03100304 A CN 03100304A CN 1517510 A CN1517510 A CN 1517510A
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Abstract
A method for hierarchical regulating the water flows of water injection well in oil field includes such steps as determining the underground combined channel of water stream, drawing the graphical chart of pressure difference, nozzle diameter, and flow, stably injecting water according to upper, medium and lower limits, measuring the water injecting curve of each layer, inputting the data about layer position or depth and water injection curve to computer, processing to obtain the new nozzle diameter for each layer, exchanging nozzles, stably injecting water, and measuring result. Its advantages are high precision, quality and efficiency, and short time.
Description
Technical field:
The present invention relates to the used method in field produces well logging field, belong to water injection well in oil fields zonal flow rate concocting method.
Background technology:
At present along with oil field development progressively deeply, particularly since polymer displacement of reservoir oil, the ternary composite oil-displacing, the zonal flow rate allotment work of water injection well in oil fields has become the difficult problem of the puzzlement meticulous exploitation in oil field.All were the experiences by the workman in the past, finished the allotment task at the aboveground water nozzle of pulling repeatedly " examination gather the water yield ".Can be for five sections of level Four with interior separate water injection well, the qualified a bite well of every allotment on average needs 4-5 days, often need 15 days for some exceptional wells, even just can finish for more time, the labour intensity of on-the-spot test is very big, operating efficiency is very low, influences the production in oil field.
Summary of the invention:
In order to overcome slow, the inefficient deficiency of time of existing water injection well zonal flow rate allotment, the invention provides a kind of water injection well in oil fields zonal flow rate concocting method, use that this method is fast to water injection well zonal flow rate allotment speed, efficient and success rate height.
Adoptable technical scheme is: this water injection well in oil fields zonal flow rate concocting method, at first draw plate, promptly test according to the zonal flow rate of 100 meters of well depths, individual layer, multilayer, eccentric tubing string, determine down-hole current combination passage, overcurrent rule under identical water injection pressure, different water nozzle diameter and different back pressure is drawn out the curve plate of pressure reduction, mouth footpath, flow; Secondly go up well, promptly under the motionless situation of former water nozzle, full well is stablized water filling by injection allocation upper, middle and lower limit, and down-off measures each interval water injection indication curve simultaneously; Explain that once more the master data and the water injection indication curve that are about to each interval layer position, the degree of depth advance machine, handle providing the new water nozzle size combinations of each interval of full well through interpretation software; Allotment is at last promptly salvaged fisher under former irrational water nozzle with reference to the explanation results in above-mentioned c step, more renews water nozzle, and full well is stablized water filling under the injection allocation amount, measures zonal flow rate allotment result.
Above-mentioned combination passage comprises tubing string, injection well downhole flow regulator, blanking plug, water nozzle, filter screen, fluid hole.
The beneficial effect of this method is: because this concocting method is same with condition, the environment facies of existing artificial concocting method, do not increase cost, allocate through the result after the processing of computer interpretation software, allotment accuracy and success height, shorten working hours, improved the quality and the efficient of injection well testing greatly,, be fit to apply for oil field injecting good water, injecting enough water provide technical guarantee.
Description of drawings:
Accompanying drawing 1 is a simulation water injection well zonal flow rate schematic diagram;
Accompanying drawing 2 is curve plates of pressure reduction, mouth footpath, flow.
The specific embodiment:
Below with the present invention is further illustrated:
This concocting method is at first according to the zonal flow rate test (see accompanying drawing 1) of hydraulics Throttle Principle to 100 meters of well depths, individual layer, multilayer, eccentric tubing string, determine down-hole current combination passage, comprise tubing string, injection well downhole flow regulator, blanking plug, water nozzle, filter screen, fluid hole, overcurrent rule under identical water injection pressure, different water nozzle diameter and different back pressure is drawn out the curve plate (seeing accompanying drawing 2) of pressure reduction, mouth footpath, flow; Secondly under the motionless situation of former water nozzle, full well is stablized water filling by injection allocation upper, middle and lower limit, and down-off measures each interval water injection indication curve simultaneously; Master data and water injection indication curve with each interval layer position, the degree of depth advances machine then, handles providing the new water nozzle size combinations of each interval of full well through interpretation software; The above-mentioned explanation results of last reference is salvaged fisher under former irrational water nozzle, more renews water nozzle, and full well is stablized water filling under the injection allocation amount, measures zonal flow rate allotment result.
Embodiment 1: the water filling zonal flow rate to grand celebration La8-2522Jing is allocated situation (relative error is less than 30%):
| Interval | Inclined to one side I | Inclined to one side II | Inclined to one side III | Inclined to one side IV | Inclined to one side V |
| Injection allocation amount (m 3/ d) form water nozzle (Φ mm) is pulled new water nozzle (Φ mm) the allotment back result (m in water nozzle (Φ mm) explanation back out 3/ d) upper limit, lower limit | 0 dead inflexibly 00 | ??30 ??3.8 ??4.0 ??1.6 ??35 ??27 | ????30 ????7.4 ????7.8 ????2.4 ????36 ????25 | ????30 ????7.4 ????8.8 ????6.6 ????37 ????27 | ????30 ????8.0 ????7.8 ????7.8 ????34 ????28 |
Embodiment 2: grand celebration is allocated situation (relative error is less than 30%) towards the water filling zonal flow rate of 76-132 well:
| Interval | Inclined to one side I | Inclined to one side II | Inclined to one side III |
| Injection allocation amount (m 3/ d) form water nozzle (Φ mm) is pulled new water nozzle (Φ mm) the allotment back result (m in water nozzle (Φ mm) explanation back out 3/d) | ????10 ????8.8 ????8.8 ????8.8 ????10 | 10 8.8 8.8 skies 11 | ????10 ????3.2 ????3.2 ????4.4 ????12 |
Embodiment 3: grand celebration is allocated situation (relative error is less than 30%) towards the water filling zonal flow rate of 33 wells:
| Interval | Inclined to one side I | Inclined to one side II | Inclined to one side III |
| Injection allocation amount (m 3/ d) form water nozzle (Φ mm) is pulled new water nozzle (Φ mm) the allotment back result (m in water nozzle (Φ mm) explanation back out 3/d) | ??10 ??4.2 ??4.2 ??5.0 ??11 | 10 7.0 7.8 skies 12 | 15 8.8 8.8 skies 15 |
As seen, the speed as a result after the allotment of above-mentioned three kinds of schemes be that prior art is incomparable soon, generally can shorten for 50% time, increase work efficiency about 50%, test success rate height, also labour intensity is low, has improved the quality and the operating efficiency of water well test greatly.
Claims (2)
1, a kind of used water injection well in oil fields zonal flow rate concocting method in field produces well logging field that relates to is characterized in that:
A. draw plate, promptly test according to the zonal flow rate of 100 meters of well depths, individual layer, multilayer, eccentric tubing string, determine down-hole current combination passage, the overcurrent rule under identical water injection pressure, different water nozzle diameter and different back pressure is drawn out the curve plate of pressure reduction, mouth footpath, flow;
B. go up well, promptly under the motionless situation of former water nozzle, full well is stablized water filling by injection allocation upper, middle and lower limit, and down-off measures each interval water injection indication curve simultaneously;
C. explain that the master data and the water injection indication curve that are about to each interval layer position, the degree of depth advance machine, handle providing the new water nozzle size combinations of each interval of full well through interpretation software;
D. allotment is promptly salvaged fisher under former irrational water nozzle with reference to the explanation results in above-mentioned c step, more renews water nozzle, and full well is stablized water filling under the injection allocation amount, measures zonal flow rate allotment result.
2, water injection well in oil fields zonal flow rate concocting method according to claim 1 is characterized in that: the combination passage comprises tubing string, injection well downhole flow regulator, blanking plug, water nozzle, filter screen, fluid hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031003044A CN1517510A (en) | 2003-01-13 | 2003-01-13 | Method for hierarchical regulating water flow of water injection well in oil field |
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| CNA031003044A CN1517510A (en) | 2003-01-13 | 2003-01-13 | Method for hierarchical regulating water flow of water injection well in oil field |
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| CN1517510A true CN1517510A (en) | 2004-08-04 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102341563A (en) * | 2009-04-06 | 2012-02-01 | 奥列格·马斯莫维奇·米尔塞多夫 | Method for monitoring oil-field development |
| CN101469607B (en) * | 2007-12-24 | 2012-07-04 | 中国石油大港油田第五采油厂 | Water injection technological process using three parameters test curve for layered pulling and running for water injection allocation |
| CN102747991A (en) * | 2011-04-22 | 2012-10-24 | 长江大学 | Method for determining single-layer output of commingled producing well |
| CN104234673A (en) * | 2014-07-30 | 2014-12-24 | 中国石油大学 | Stratified injection allocation method considering interlayer interference for multilayer oil reservoir |
| CN108614908A (en) * | 2016-12-13 | 2018-10-02 | 中国石油天然气股份有限公司 | The selection method of eccentric separated-injection multistage water nozzle |
| CN110821458A (en) * | 2019-10-31 | 2020-02-21 | 中国石油大学(北京) | Injection allocation amount determination method, device and system for horizontal well three-dimensional well pattern |
-
2003
- 2003-01-13 CN CNA031003044A patent/CN1517510A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101469607B (en) * | 2007-12-24 | 2012-07-04 | 中国石油大港油田第五采油厂 | Water injection technological process using three parameters test curve for layered pulling and running for water injection allocation |
| CN102341563A (en) * | 2009-04-06 | 2012-02-01 | 奥列格·马斯莫维奇·米尔塞多夫 | Method for monitoring oil-field development |
| CN102341563B (en) * | 2009-04-06 | 2015-06-10 | 奥列格·马斯莫维奇·米尔塞多夫 | Method for monitoring oil-field development |
| CN102747991A (en) * | 2011-04-22 | 2012-10-24 | 长江大学 | Method for determining single-layer output of commingled producing well |
| CN104234673A (en) * | 2014-07-30 | 2014-12-24 | 中国石油大学 | Stratified injection allocation method considering interlayer interference for multilayer oil reservoir |
| CN104234673B (en) * | 2014-07-30 | 2015-12-30 | 中国石油大学(华东) | Consider the stratified reservoir multi-zone flow regulating method of interlayer interference |
| CN108614908A (en) * | 2016-12-13 | 2018-10-02 | 中国石油天然气股份有限公司 | The selection method of eccentric separated-injection multistage water nozzle |
| 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 |
| CN110821458A (en) * | 2019-10-31 | 2020-02-21 | 中国石油大学(北京) | Injection allocation amount determination method, device and system for horizontal well three-dimensional well pattern |
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