CN109342839B - Method for judging phase sequence of submersible rodless reciprocating pump - Google Patents
Method for judging phase sequence of submersible rodless reciprocating pump Download PDFInfo
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- CN109342839B CN109342839B CN201811020805.7A CN201811020805A CN109342839B CN 109342839 B CN109342839 B CN 109342839B CN 201811020805 A CN201811020805 A CN 201811020805A CN 109342839 B CN109342839 B CN 109342839B
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- reciprocating pump
- stroke
- submersible rodless
- rodless reciprocating
- currents
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- 238000000819 phase cycle Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000012935 Averaging Methods 0.000 claims description 12
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000005553 drilling Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/18—Indicating phase sequence; Indicating synchronism
-
- 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
-
- 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
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
- F04B47/06—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having motor-pump units situated at great depth
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The invention belongs to the field of petroleum drilling and production, and particularly relates to a method for judging the phase sequence of an oil-submersible rodless reciprocating pump. Aiming at the problems of complex operation, time and labor waste and the like of the method for judging the cable phase sequence connection state of the submersible rodless reciprocating pump in the prior art, the method for judging the phase sequence of the submersible rodless reciprocating pump is provided, and mainly comprises the following steps: step 1: the submersible rodless reciprocating pump goes into the well and has normal operation conditions; setting the up and down stroke running frequency of the submersible rodless reciprocating pump; step 2: starting the submersible rodless reciprocating pump, and operating the submersible rodless reciprocating pump; and step 3: the submersible rodless reciprocating pump runs for n strokes to obtain the average current Ib plus (mn) of the downstroke of the n strokes; and 4, step 4: controlling the submersible rodless reciprocating pump to reversely rotate; and 5: b stroke times are reversely operated by the submersible rodless reciprocating pump to obtain the down stroke average current Ib inverse (ab) of the b stroke times; step 6: and comparing the magnitude of Ib positive (mn) and Ib negative (ab) to obtain the judgment result of positive and negative connection of the submersible rodless reciprocating pump phase sequence.
Description
Technical Field
The invention belongs to the field of petroleum drilling and production, and particularly relates to a method for judging the phase sequence of an oil-submersible rodless reciprocating pump.
Background
At present, oil extraction machinery at home and abroad usually adopts an oil-submersible rodless reciprocating pump. The submersible rodless reciprocating pump is at the very end of the tubing and is connected to the surface control cabinet by a specially made high pressure power cable (typically 1140V).
The submersible rodless reciprocating pump is positioned at the special position of the tail end of an oil pipe, and the three-core wire in the high-voltage power cable is red and is connected to the control cabinet through a terminal at a wellhead. At present, after the submersible rodless reciprocating pump is installed on an oil pipe and connected with a cable, whether the cable phase sequence connection of the submersible rodless reciprocating pump is correct or not cannot be visually judged, and the judgment can only be carried out in a mode of suppressing the pump at a wellhead. This mode complex operation wastes time and energy, needs many people's cooperation just can accomplish. Meanwhile, misjudgment may occur in the mode of pumping by the wellhead, and once misjudgment occurs, the oil well yield is affected, and even the rodless reciprocating pump is damaged in severe cases.
Disclosure of Invention
The invention aims to provide a method for judging the phase sequence of an oil-submersible rodless reciprocating pump, aiming at solving the problems of complex operation, time and labor waste and the like of the method for judging the phase sequence connection state of an oil-submersible rodless reciprocating pump cable in the prior art.
In order to achieve the purpose, the technical scheme provided by the invention is as follows: the method for judging the phase sequence of the submersible rodless reciprocating pump is characterized by comprising the following steps of:
step 1: the submersible rodless reciprocating pump goes into the well and has normal operation conditions; setting the upper stroke running frequency f1 of the submersible rodless reciprocating pump as 11-14 Hz and the lower stroke running frequency as 16-24 Hz;
step 2: starting the submersible rodless reciprocating pump, and operating the submersible rodless reciprocating pump;
and step 3: the submersible rodless reciprocating pump runs for n strokes, wherein n is a positive integer and is more than or equal to 15 and more than or equal to 5;
when the operation of every 1 stroke is finished, recording M operation currents in the stroke, wherein M is a positive integer more than or equal to 250;
corresponding M downstroke operating currents are intercepted from the M operating currents, wherein M is a positive integer;
averaging the m downstroke operation currents to obtain a downstroke average operation current Ib (m);
obtaining n lower stroke average running currents Ib (m) corresponding to n stroke times, wherein Ib (m1), Ib (m2) and Ib (m3) … … Ib (mn); averaging the values to obtain n-stroke down stroke average current Ib plus (mn);
and 4, step 4: controlling the submersible rodless reciprocating pump to reversely rotate;
and 5: the submersible rodless reciprocating pump runs in reverse for b times of stroke, wherein b is a positive integer and is more than or equal to 15 and more than or equal to 5; then, the submersible rodless reciprocating pump is closed;
when the operation of every 1 reverse stroke is finished, recording A reverse operation currents in the reverse stroke, wherein A is a positive integer more than or equal to 250;
corresponding a reverse down stroke running currents are intercepted from the A reverse running currents, wherein a is a positive integer;
averaging the a reverse down stroke running currents to obtain a reverse down stroke average running current Ib (a);
corresponding to b reverse stroke times, obtaining b lower stroke average running currents Ib (a) of Ib (a1), Ib (a2) and Ib (a3) … … Ib (ab); averaging the average current values to obtain the average current Ib inverse (ab) of the down stroke of the b-stroke frequency;
step 6: comparing the magnitude of Ib positive (mn) and Ib negative (ab) to obtain the judgment result of positive and negative connection of the submersible rodless reciprocating pump phase sequence;
if Ib is more than Ib and less than Ib and is less than ab, the submersible rodless reciprocating pump is correctly connected in sequence;
if Ib is more than Ib, the connection of the submersible rodless reciprocating pump is wrong.
Further, in the step 3, the submersible rodless reciprocating pump runs n-10 strokes,
when the operation of every 1 stroke is completed, recording the M in the stroke as 250 operation currents, i.e. I1, I2, I3 … … I250;
from M to 250 operating currents, 60 downstroke operating currents, i.e., I163, I164, I165 … … I222, are extracted from I163.
Further, in the step 5, the submersible rodless reciprocating pump runs in the reverse direction b-10 times of stroke,
when the operation of every 1 reverse stroke is completed, recording A in the reverse stroke as 250 reverse operation currents, namely i1, i2 and i3 … … i 250;
and from a-250 reverse run currents, the corresponding a-60 reverse down-stroke run currents, i.e., i163, i164, i165 … … i222, are taken from i 163.
Further, in step 1, the up-stroke operating frequency and the down-stroke operating frequency of the submersible rodless reciprocating pump are set through a local control system or a remote control system.
Further, in the step 3 and the step 5, the operating current of the submersible rodless reciprocating pump transmitted by the frequency converter is read by the phase sequence automatic judgment controller, the operating current of the corresponding downstroke is intercepted, and the average value of the downstroke operating current is calculated.
Further, in step 4, the frequency converter is controlled to reversely operate by the phase sequence automatic judgment controller.
Compared with the prior art, the invention has the advantages that:
1. the method for automatically judging the phase sequence carries out positive and negative phase sequence judgment by comparing the average running current of the lower stroke when the submersible rodless reciprocating pump rotates positively and negatively, does not need to hold the pump at a well head, can quickly and simply judge the phase sequence of the submersible rodless reciprocating pump, and can quickly and simply convert the phase sequence.
2. The invention carries out current collection and positive and negative phase sequence judgment through the phase sequence automatic judgment controller, displays the result through a human-computer interface, has clear judgment result, is simple to operate and greatly reduces the field workload. Only one person is needed for operation, and cooperation of a plurality of persons is not needed, so that labor cost is saved.
The working principle of the invention is as follows:
because the operating frequency of the upper stroke of the rodless reciprocating pump is different from the operating frequency of the lower stroke, the upper stroke output current and the lower stroke output current of the submersible rodless reciprocating pump are different.
When the operating frequency of the up stroke is less than the operating frequency of the down stroke, the output current of the down stroke when the connection of the phase sequence of the submersible rodless reciprocating pump is correct is less than the output current when the connection of the phase sequence of the submersible rodless reciprocating pump is wrong. By utilizing the phenomenon, the judgment of positive and negative phase sequence wiring can be realized by comparing the average running current of the lower stroke when the submersible rodless reciprocating pump rotates positively and negatively.
Detailed Description
The present invention will be described in further detail with reference to examples.
The embodiment provides a method for judging the phase sequence of an oil-submersible rodless reciprocating pump, which comprises the following steps:
step 1: the submersible rodless reciprocating pump goes into the well and has normal operation conditions; setting the upper stroke running frequency f1 of the submersible rodless reciprocating pump to be 11-14 Hz and the lower stroke running frequency to be 16-24 Hz through a local control system;
step 2: starting the submersible rodless reciprocating pump, and operating the submersible rodless reciprocating pump;
and step 3: the submersible rodless reciprocating pump runs n-10 times of stroke;
reading the operation current of the submersible rodless reciprocating pump transmitted by the frequency converter through the phase sequence automatic judgment controller, and intercepting the operation current of the corresponding downstroke;
when the operation of every 1 stroke is completed, recording the M in the stroke as 250 operation currents, i.e. I1, I2, I3 … … I250;
from M to 250 operating currents, 60 downstroke operating currents, i.e., I163, I164, I165 … … I222, are extracted from I163.
Averaging the 60 downstroke operation currents to obtain a downstroke average operation current Ib (m);
obtaining 10 lower stroke average running currents Ib (m) corresponding to n being 10 strokes, wherein Ib (m1), Ib (m2) and Ib (m3) … … Ib (m10) are 10 lower stroke average running currents Ib (m); averaging the average current to obtain the average current Ib plus (mn) of the downstroke of 10 strokes;
and 4, step 4: the frequency converter is controlled to reversely run through the phase sequence automatic judgment controller, so that the submersible rodless reciprocating pump is controlled to reversely rotate;
and 5: the submersible rodless reciprocating pump runs reversely for b-10 times of stroke; then, the submersible rodless reciprocating pump is closed;
reading the operation current of the submersible rodless reciprocating pump transmitted by the frequency converter through the phase sequence automatic judgment controller, and intercepting the operation current of the corresponding downstroke;
when the operation of every 1 reverse stroke is completed, recording A in the reverse stroke as 250 reverse operation currents, namely i1, i2 and i3 … … i 250;
and the corresponding a-60 reverse down-stroke operating currents, i.e., i163, i164, i165 … … i222, are extracted from the a-250 reverse operating currents.
Averaging the a-60 reverse down stroke running currents to obtain a reverse down stroke average running current Ib (a);
obtaining 10 down-stroke average running currents Ib (a) corresponding to 10 reverse strokes of Ib (a1), Ib (a2) and Ib (a3) … … Ib (a 10); averaging the average current values to obtain the average current Ib inverse (ab) of the down stroke of the b-stroke frequency;
step 6: comparing the magnitude of Ib positive (mn) and Ib negative (ab) to obtain the judgment result of positive and negative connection of the submersible rodless reciprocating pump phase sequence;
if Ib is more than Ib and less than Ib and is less than ab, the submersible rodless reciprocating pump is correctly connected in sequence;
if Ib is more than Ib, the connection of the submersible rodless reciprocating pump is wrong.
And after the positive and negative phase sequence judgment result of the submersible rodless reciprocating pump is obtained through the phase sequence automatic judgment controller, the result is displayed through a human-computer interface.
Claims (6)
1. A method for judging the phase sequence of an oil-submersible rodless reciprocating pump is characterized in that; the method comprises the following steps:
step 1: the submersible rodless reciprocating pump goes into the well and has normal operation conditions; setting the upper stroke running frequency f1 of the submersible rodless reciprocating pump as 11-14 Hz and the lower stroke running frequency as 16-24 Hz;
step 2: starting the submersible rodless reciprocating pump, and operating the submersible rodless reciprocating pump;
and step 3: the submersible rodless reciprocating pump runs for n strokes, wherein n is a positive integer and is more than or equal to 15 and more than or equal to 5;
when the operation of every 1 stroke is finished, recording M operation currents in the stroke, wherein M is a positive integer more than or equal to 250;
corresponding M downstroke operating currents are intercepted from the M operating currents, wherein M is a positive integer;
averaging the m downstroke operation currents to obtain a downstroke average operation current Ib (m);
obtaining n lower stroke average running currents Ib (m) corresponding to n stroke times, wherein Ib (m1), Ib (m2) and Ib (m3) … … Ib (mn); averaging the values to obtain n-stroke down stroke average current Ib plus (mn);
and 4, step 4: controlling the submersible rodless reciprocating pump to reversely rotate;
and 5: the submersible rodless reciprocating pump runs in reverse for b times of stroke, wherein b is a positive integer and is more than or equal to 15 and more than or equal to 5; then, the submersible rodless reciprocating pump is closed;
when the operation of every 1 reverse stroke is finished, recording A reverse operation currents in the reverse stroke, wherein A is a positive integer more than or equal to 250;
corresponding a reverse down stroke running currents are intercepted from the A reverse running currents, wherein a is a positive integer;
averaging the a reverse down stroke running currents to obtain a reverse down stroke average running current Ib (a);
corresponding to b reverse stroke times, obtaining b lower stroke average running currents Ib (a) of Ib (a1), Ib (a2) and Ib (a3) … … Ib (ab); averaging the average current values to obtain the average current Ib inverse (ab) of the down stroke of the b-stroke frequency;
step 6: comparing the magnitude of Ib positive (mn) and Ib negative (ab) to obtain the judgment result of positive and negative connection of the submersible rodless reciprocating pump phase sequence;
if Ib is more than Ib and less than Ib and is less than ab, the submersible rodless reciprocating pump is correctly connected in sequence;
if Ib is more than Ib, the connection of the submersible rodless reciprocating pump is wrong.
2. The method for judging the phase sequence of the submersible rodless reciprocating pump according to claim 1, characterized by comprising the following steps:
in the step 3, the submersible rodless reciprocating pump runs n-10 times of stroke,
when the operation of every 1 stroke is completed, recording the M in the stroke as 250 operation currents, i.e. I1, I2, I3 … … I250;
from M to 250 operating currents, 60 downstroke operating currents, i.e., I163, I164, I165 … … I222, are extracted from I163.
3. The method for judging the phase sequence of the submersible rodless reciprocating pump according to claim 1 or 2, characterized in that: in the step 5, the submersible rodless reciprocating pump runs in reverse b-10 times of stroke,
when the operation of every 1 reverse stroke is completed, recording A in the reverse stroke as 250 reverse operation currents, namely i1, i2 and i3 … … i 250;
and from a-250 reverse run currents, the corresponding a-60 reverse down-stroke run currents, i.e., i163, i164, i165 … … i222, are taken from i 163.
4. The method for judging the phase sequence of the submersible rodless reciprocating pump according to claim 3, wherein the method comprises the following steps: in the step 1, the upper stroke running frequency and the lower stroke running frequency of the submersible rodless reciprocating pump are set through a local control system or a remote control system.
5. The method for judging the phase sequence of the submersible rodless reciprocating pump according to claim 4, wherein the method comprises the following steps: and 3, in the step 5, reading the operation current of the submersible rodless reciprocating pump transmitted by the frequency converter through the phase sequence automatic judgment controller, intercepting the operation current of the corresponding down stroke, and calculating the average value of the down stroke operation current.
6. The method for judging the phase sequence of the submersible rodless reciprocating pump according to claim 5, wherein the method comprises the following steps: and 4, controlling the frequency converter to reversely run through the phase sequence automatic judgment controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811020805.7A CN109342839B (en) | 2018-09-03 | 2018-09-03 | Method for judging phase sequence of submersible rodless reciprocating pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811020805.7A CN109342839B (en) | 2018-09-03 | 2018-09-03 | Method for judging phase sequence of submersible rodless reciprocating pump |
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| CN109342839A CN109342839A (en) | 2019-02-15 |
| CN109342839B true CN109342839B (en) | 2020-08-11 |
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| CN201811020805.7A Active CN109342839B (en) | 2018-09-03 | 2018-09-03 | Method for judging phase sequence of submersible rodless reciprocating pump |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5575626A (en) * | 1995-05-12 | 1996-11-19 | Cryogenic Group, Inc. | Cryogenic pump |
| CN103944477A (en) * | 2014-04-04 | 2014-07-23 | 中国东方电气集团有限公司 | Method for correcting phase sequence of power line of permanent magnet synchronous motor driver of electric car |
| CN107290565A (en) * | 2017-07-19 | 2017-10-24 | 中车洛阳机车有限公司 | Diesel locomotive motor positive and inverse is to auxiliary detection device and its detection method |
| CN107707162A (en) * | 2017-11-24 | 2018-02-16 | 安徽维新能源技术有限公司 | A kind of brushless electric machine phase sequence automatic identification method |
-
2018
- 2018-09-03 CN CN201811020805.7A patent/CN109342839B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5575626A (en) * | 1995-05-12 | 1996-11-19 | Cryogenic Group, Inc. | Cryogenic pump |
| CN103944477A (en) * | 2014-04-04 | 2014-07-23 | 中国东方电气集团有限公司 | Method for correcting phase sequence of power line of permanent magnet synchronous motor driver of electric car |
| CN107290565A (en) * | 2017-07-19 | 2017-10-24 | 中车洛阳机车有限公司 | Diesel locomotive motor positive and inverse is to auxiliary detection device and its detection method |
| CN107707162A (en) * | 2017-11-24 | 2018-02-16 | 安徽维新能源技术有限公司 | A kind of brushless electric machine phase sequence automatic identification method |
Non-Patent Citations (1)
| Title |
|---|
| 基于支持向量机的潜油往复式油田抽油机工况诊断方法;于德亮等;《电工技术学报》;20130430;第28卷(第4期);248-255 * |
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| CN109342839A (en) | 2019-02-15 |
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