CN113027430A - Horizontal well fluid production section testing pipe column and process based on tracer marking - Google Patents
Horizontal well fluid production section testing pipe column and process based on tracer marking Download PDFInfo
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- CN113027430A CN113027430A CN202110475345.2A CN202110475345A CN113027430A CN 113027430 A CN113027430 A CN 113027430A CN 202110475345 A CN202110475345 A CN 202110475345A CN 113027430 A CN113027430 A CN 113027430A
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- 238000012360 testing method Methods 0.000 title claims abstract description 80
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 46
- 239000000700 radioactive tracer Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000012530 fluid Substances 0.000 title claims abstract description 15
- 230000008569 process Effects 0.000 title claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 73
- 238000000605 extraction Methods 0.000 claims abstract description 20
- 239000007787 solid Substances 0.000 claims abstract description 18
- 239000003550 marker Substances 0.000 claims abstract description 14
- 238000005086 pumping Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000004587 chromatography analysis Methods 0.000 claims description 4
- 239000003129 oil well Substances 0.000 claims description 4
- 230000009466 transformation Effects 0.000 claims description 3
- 238000002372 labelling Methods 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 2
- 210000002445 nipple Anatomy 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 230000004913 activation Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000004811 liquid chromatography Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fats And Perfumes (AREA)
Abstract
The invention discloses a horizontal well liquid production section testing tubular column based on tracer marking and a process thereof, belonging to the technical field of oil extraction in oil fields. The underground pipe string of the liquid production profile testing pipe column sequentially comprises a plug, a sieve pipe, a plurality of sections of oil pipe short sections, a plurality of underground intelligent switch devices, a guide oil pipe and an oil extraction pump from bottom to top, wherein the plug is arranged at the tail end of the sieve pipe, the plurality of sections of oil pipe short sections are connected through the underground intelligent switch devices in sequence to form a testing pipe section, and each underground intelligent switch device is internally provided with a corresponding specific solid tracing marker; one end of the test pipe section is connected with the sieve pipe, the other end of the test pipe section is connected with the guide oil pipe, the oil extraction pump is arranged in the guide oil pipe, and the top end of the oil extraction pump is connected with the oil pumping rod; and the testing equipment is connected with the liquid outlet end of the guide oil pipe and is used for detecting the types and the characteristic contents of the tracer markers in the produced liquid. The invention also provides a test process of the tubular column, and the produced fluid profile test tubular column can finish the profile test of a multi-section horizontal well, reduce the drilling trip number and improve the operation efficiency.
Description
Technical Field
The invention relates to the technical field of oil extraction in oil fields, in particular to a horizontal well liquid production profile testing tubular column based on tracer marking and a process.
Background
In recent years, as reservoir quality deteriorates year by year, horizontal wells have become a main means for benefit development of low permeability-compact oil and gas reservoirs. Due to the influences of reservoir non-mean, crack development and water injection development, the liquid production conditions of all sections of the horizontal well are different, and how to accurately test the liquid production contribution of all sections of the horizontal well provides a basis for reasonable exploitation and measures of an oil reservoir, so that the method is a technical problem which is urgently needed to be solved by oil and gas field development and management work.
At present, effective means for logging a liquid production profile of a horizontal well of a low-permeability and compact oil and gas reservoir are few, and the method mainly comprises means such as neutron-oxygen activation sectional test, turbine flowmeter sectional test, mechanical packing dragging test and the like, and mainly faces the following problems: firstly, the neutron oxygen activation sectional test and the turbine flowmeter sectional test need to be stopped for testing, and accurate dynamic data cannot be obtained; secondly, the test instrument is mainly carried into the oil well by the cable and the crawler or the continuous oil pipe, so that the operation cost is high; thirdly, for part of low liquid volume wells, the requirement on the discharge capacity of a turbine flowmeter is high, and the turbine flowmeter cannot be started; the neutron oxygen activation testing precision is low, and the peak value cannot be detected; the process needs repeated operation, has long construction period and high cost, and the mechanical packer dragging test packer is easy to lose efficacy and distort and cannot accurately measure. Therefore, it is necessary to provide a horizontal well production profile testing tubular column and a process which have high detection precision, high testing speed and reliable running performance.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provides a horizontal well production profile testing tubular column based on tracer marking and a process thereof.
The invention provides a horizontal well liquid production section testing pipe column based on tracer marking, which comprises a down-hole pipe string, and sequentially comprises a plug, a sieve pipe, a plurality of sections of oil pipe short sections, a plurality of down-hole intelligent switches, a guide oil pipe and an oil extraction pump from bottom to top, wherein the plug is arranged at the tail end of the sieve pipe and is used for plugging the end part of the sieve pipe; one end of the test pipe section is connected with the sieve pipe, the other end of the test pipe section is connected with the guide oil pipe, the oil extraction pump is arranged in the guide oil pipe, and the top end of the oil extraction pump is connected with the oil pumping rod;
the testing equipment is connected with the liquid outlet end of the guide oil pipe and is used for detecting the type and the characteristic content of the tracer markers in the produced liquid;
the intelligent switch is electrically connected with the ground switch controller, and the ground switch controller and the test equipment are both electrically connected with the power supply.
Preferably, the device also comprises a desander, wherein the liquid inlet end of the desander is connected with the liquid outlet end of the guide oil pipe, and the liquid outlet end of the desander is connected with the liquid inlet end connected with the test equipment and used for removing silt in the produced liquid.
Preferably, a check valve for enabling the produced fluid to enter the tail end oil pipe nipple from the sieve tube is further connected between the tail end oil pipe nipple and the sieve tube.
Preferably, the test equipment is a liquid chromatography analyzer.
Preferably, the solid tracer is a water-soluble solid tracer or an oil-soluble solid tracer.
The invention also provides a horizontal well fluid production section testing process based on the tracer marking, which comprises the following steps:
s1, respectively installing different solid tracers in corresponding intelligent switches;
s2, connecting the intelligent switch with an oil pipe short circuit to form a test pipe section, connecting two ends of the test pipe section with a guide oil pipe and a sieve pipe respectively to form an underground pipe string, and descending the underground pipe string to a position of a horizontal section of a well to be tested;
s3, controlling the intelligent switch to be turned on, enabling the solid tracer to be in contact with well fluid, and slowly releasing the tracer marker;
s4, pumping and lifting the oil well for oil extraction, wherein the marked liquid flows to the toe end of the horizontal well, enters the oil pipe through the sieve pipe, is extracted to the ground through the extraction pump, is subjected to online production test through test equipment, continuously performs chromatographic analysis on the extracted liquid, and inverts the production profile of the horizontal well through the detected characteristic content;
and S5, calculating the liquid production condition of each section. The horizontal well is under the same pressure system, the liquid in the well is in single flow, and the marked liquid amount of each section is the sum of the liquid amount of the section and the liquid amount of the previous section. Thus, the liquid production in each stage is
Namely Qn＝QGeneral assembly(Wn-Wn+1)/Wn
Wherein:
n is the number of perforation sections, and n is counted from the toe end of the horizontal well;
Qnthe liquid production amount of the nth perforation segment;
Qgeneral assemblyThe total fluid production for the well;
Wnthe content of the marker of the nth perforation segment;
Wn+1the content of the marker of the (n + 1) th perforation segment;
and S6, pulling out the underground pipe string, and performing subsequent water plugging and reservoir transformation operation according to the test result.
Compared with the prior art, the invention has the beneficial effects that: the liquid production profile testing pipe column enables liquid to flow in a single direction after being marked, and dynamic liquid production profile testing data are obtained through optimization calculation. Compared with the conventional mechanical packing dragging test, the packer is replaced. Firstly, explanation distortion caused by packer setting failure is avoided; and secondly, the drill sticking caused by difficult deblocking of a plurality of packers is avoided.
The invention adopts the intelligent switch to automatically control the on or off of the intelligent switch, can finish the section test of the multi-section horizontal well, reduces the drilling trip number and improves the operation efficiency.
The method adopts the liquid chromatogram to analyze the types and the characteristic contents of the tracer markers in the produced water, and has the advantages of sustainable online detection, no need of manual sampling and high measurement precision.
Drawings
FIG. 1 is a schematic structural diagram of a horizontal well fluid production profile testing string based on tracer marking according to the invention.
Description of reference numerals:
1. the system comprises a pipe plug, 2 a sieve pipe, 3 an oil pipe short joint, 4 an intelligent switch, 5 a guide oil pipe, 6 an oil production pump, 7 a sucker rod, 8 a testing device, 9 a sand remover and 10 a check valve.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying fig. 1, but it should be understood that the scope of the present invention is not limited to the specific embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example 1
The invention provides a horizontal well liquid production section testing pipe column based on tracer marking, which comprises a down-hole pipe string, and sequentially comprises a plug 1, a sieve pipe 2, a plurality of sections of oil pipe short sections 3, a plurality of down-hole intelligent switches 4, a guide oil pipe 5 and an oil extraction pump 6 from bottom to top, wherein the plug 1 is arranged at the tail end of the sieve pipe 2 and is used for plugging the end part of the sieve pipe 2, the plurality of sections of oil pipe short sections 3 are sequentially connected through the down-hole intelligent switches 4 to form a testing pipe section, and corresponding specific solid tracer markers are arranged in each down-hole intelligent switch 4; one end of the test pipe section is connected with the sieve pipe 2, the other end of the test pipe section is connected with the guide oil pipe 5, the oil extraction pump 6 is arranged in the guide oil pipe 5, and the top end of the oil extraction pump is connected with the sucker rod 7;
the testing equipment 8 is connected with the liquid outlet end of the guide oil pipe 5 and is used for detecting the types and the characteristic contents of the tracer markers in the produced liquid;
the intelligent switch 4 is electrically connected with a ground switch controller, and the ground switch controller and the test equipment 8 are both electrically connected with a power supply.
Preferably, the device also comprises a desander 9, wherein the liquid inlet end of the desander 9 is connected with the liquid outlet end of the guide oil pipe 5, and the liquid outlet end of the desander 9 is connected with the liquid inlet end connected with the test equipment 8 and used for removing silt in the produced liquid.
Preferably, a check valve 10 for allowing production fluid to enter the end tubing nipple 3 from the screen 2 is further connected between the endmost tubing nipple 3 and the screen 2. The check valve 10 is used for avoiding the liquid that gets into oil pipe nipple joint 3 to flow back to the screen pipe outside, reduces sampling efficiency, influences and detects the precision.
Preferably, the test device 8 is a liquid chromatography analyzer.
Preferably, the solid tracer is a water-soluble solid tracer or an oil-soluble solid tracer.
Example 2
The testing process of the horizontal well liquid production section testing pipe column based on the tracer marking comprises the following steps:
s1, respectively installing different solid tracers in corresponding intelligent switches;
s2, connecting the intelligent switch with an oil pipe short circuit to form a test pipe section, connecting two ends of the test pipe section with a guide oil pipe and a sieve pipe respectively to form an underground pipe string, and descending the underground pipe string to a position of a horizontal section of a well to be tested;
s3, controlling the intelligent switch to be turned on, enabling the solid tracer to contact well fluid and slowly release the tracer marker, wherein the tracer marker speed is in a certain proportional relation with the water flow rate;
s4, pumping and lifting the oil well for oil extraction, wherein the marked liquid flows to the toe end of the horizontal well, enters the oil pipe through the sieve pipe, is extracted to the ground through the extraction pump, is subjected to online production test through test equipment, continuously performs chromatographic analysis on the extracted liquid, and inverts the production profile of the horizontal well through the detected characteristic content;
and S5, calculating the liquid production condition of each section. The horizontal well is under the same pressure system, the liquid in the well is in single flow, and the marked liquid amount of each section is the sum of the liquid amount of the section and the liquid amount of the previous section. Thus, the liquid production in each stage is
Namely Qn＝QGeneral assembly(Wn-Wn+1)/Wn
Wherein:
n is the number of perforation sections, and n is counted from the toe end of the horizontal well;
Qnthe liquid production amount of the nth perforation segment;
Qgeneral assemblyThe total fluid production for the well;
Wnthe content of the marker of the nth perforation segment;
Wn+1the content of the marker of the (n + 1) th perforation segment;
and S6, pulling out the underground pipe string, and performing subsequent water plugging and reservoir transformation operation according to the test result.
In the embodiment, a plurality of intelligent switches containing the tracer are arranged at different positions of a horizontal section, liquid in each section of the well is opened at regular time and is slowly released and marked, the liquid flows in a single direction of a shaft and enters an oil pipe, the liquid is lifted out of the ground through a pump, the produced liquid is continuously subjected to chromatographic analysis on the ground, and the produced liquid profile of the horizontal well is inverted through the characteristic content of the detected marker. On the basis of a conventional oil production pipe, the method is matched with tools such as a tracer intelligent switch and the like, an explanation method for single liquid flow is established, the use of a packer is reduced, and the explanation precision is improved. Meanwhile, a ground online detection method is adopted, the dynamic liquid production condition of each section of the horizontal well can be obtained without sampling analysis, and the quantity operation efficiency is greatly improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a horizontal well production fluid section test tubular column based on tracer mark which characterized in that includes:
the underground pipe string sequentially comprises a plug (1), a sieve pipe (2), a plurality of sections of oil pipe short sections (3), a plurality of intelligent switches (4), a guide oil pipe (5) and an oil extraction pump (6) from bottom to top, wherein the plug (1) is arranged at the tail end of the sieve pipe (2) and used for plugging the end part of the sieve pipe (2), the sections of oil pipe short sections (3) are sequentially connected through the underground intelligent switches (4) to form a test pipe section, and corresponding specific solid tracing markers are arranged in each underground intelligent switch (4); one end of the test pipe section is connected with the sieve pipe (2), the other end of the test pipe section is connected with the guide oil pipe (5), the oil extraction pump (6) is arranged in the guide oil pipe (5), and the top end of the oil extraction pump is connected with the oil pumping rod (7);
the testing equipment (8) is connected with the liquid outlet end of the guide oil pipe (5) and is used for detecting the types and the characteristic contents of the tracer markers in the produced liquid;
the intelligent switch (4) is electrically connected with a ground switch controller, and the ground switch controller and the test equipment (8) are both electrically connected with a power supply.
2. The horizontal well production profile testing string based on tracer marking according to claim 1, further comprising a desander (9), wherein a liquid inlet end of the desander (9) is connected with a liquid outlet end of the guide oil pipe (5), and a liquid outlet end of the desander (9) is connected with a liquid inlet end connected with the testing equipment (8) and used for removing silt in the produced liquid.
3. Horizontal well production profile test string based on tracer marking according to claim 1, characterized in that a check valve (10) for the production fluid to enter the end tubing sub (3) from the screen (2) is further connected between the end tubing sub (3) and the screen (2).
4. Tracer-marker based horizontal well production profile test string according to claim 1, characterized in that the test equipment (8) is a liquid chromatograph.
5. The horizontal well production profile test string based on tracer-labeling of claim 1, wherein the solid tracer is a water-soluble solid tracer or an oil-soluble solid tracer.
6. Horizontal well production profile test string based on tracer marking according to claim 1, characterized in that the intelligent switch (4) is a timed intelligent switch.
7. The tracer-marker-based horizontal well production profile test string testing process according to claim 1, comprising the steps of:
s1, respectively installing different solid tracers in corresponding intelligent switches;
s2, connecting the intelligent switch with an oil pipe short circuit to form a test pipe section, connecting two ends of the test pipe section with a guide oil pipe and a sieve pipe respectively to form an underground pipe string, and descending the underground pipe string to a position of a horizontal section of a well to be tested;
s3, controlling the intelligent switch to be turned on, enabling the solid tracer to be in contact with well fluid, and slowly releasing the tracer marker;
s4, pumping and lifting the oil well for oil extraction, wherein the marked liquid flows to the toe end of the horizontal well, enters the test pipe section and the guide oil pipe through the sieve pipe, is extracted to the ground through the extraction pump, is subjected to online production test through test equipment, continuously performs chromatographic analysis on the extracted liquid, and inverts the output profile of the horizontal well through the acquired characteristic content;
s5, calculating the liquid production condition of each section, wherein the liquid flows in the horizontal well in a single mode under the same pressure system, and the marked liquid amount of each section is the sum of the liquid amount of the section and the liquid amount of the previous section; thus, the liquid production in each stage is
Namely Qn＝QGeneral assembly(Wn-Wn+1)/Wn
Wherein:
n is the number of perforation sections, and n is counted from the toe end of the horizontal well;
Qnthe liquid production amount of the nth perforation segment;
Qgeneral assemblyThe total fluid production for the well;
Wnthe content of the marker of the nth perforation segment;
Wn+1the content of the marker of the (n + 1) th perforation segment;
and S6, pulling out the underground pipe string, and performing subsequent water plugging and reservoir transformation operation according to the test result.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110475345.2A CN113027430A (en) | 2021-04-29 | 2021-04-29 | Horizontal well fluid production section testing pipe column and process based on tracer marking |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110475345.2A CN113027430A (en) | 2021-04-29 | 2021-04-29 | Horizontal well fluid production section testing pipe column and process based on tracer marking |
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|---|---|---|---|---|
| WO2001065053A1 (en) * | 2000-03-02 | 2001-09-07 | Shell Internationale Research Maatschappij B.V. | Tracer injection in a production well |
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| CN207177888U (en) * | 2017-06-23 | 2018-04-03 | 中国石油天然气股份有限公司 | Well logging tubing string |
| CN108104801A (en) * | 2017-12-30 | 2018-06-01 | 中国石油天然气股份有限公司 | A kind of horizontal well tracer producing profile testing tubing string and method |
| CN108952656A (en) * | 2018-06-12 | 2018-12-07 | 中国石油天然气股份有限公司 | Multistage pressure break horizontal well produced fluid cross section method and tubing string |
| CN110230489A (en) * | 2018-03-05 | 2019-09-13 | 中国石油化工股份有限公司 | A kind of multistage pressure break horizontal well produced fluid cross section device and method |
| CN112593928A (en) * | 2020-05-29 | 2021-04-02 | 中国海洋石油集团有限公司 | Method for monitoring production fluid profile of horizontal well with medium and high water content for long time by using tracer |
| CN215860141U (en) * | 2021-04-29 | 2022-02-18 | 庆阳市广源基业运输有限公司 | Horizontal well liquid production section testing pipe column based on tracer marking |
-
2021
- 2021-04-29 CN CN202110475345.2A patent/CN113027430A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001065053A1 (en) * | 2000-03-02 | 2001-09-07 | Shell Internationale Research Maatschappij B.V. | Tracer injection in a production well |
| CN104500057A (en) * | 2014-12-03 | 2015-04-08 | 中国石油化工股份有限公司 | Testing method of liquid producing profile of horizontal well |
| CN207177888U (en) * | 2017-06-23 | 2018-04-03 | 中国石油天然气股份有限公司 | Well logging tubing string |
| CN108104801A (en) * | 2017-12-30 | 2018-06-01 | 中国石油天然气股份有限公司 | A kind of horizontal well tracer producing profile testing tubing string and method |
| CN110230489A (en) * | 2018-03-05 | 2019-09-13 | 中国石油化工股份有限公司 | A kind of multistage pressure break horizontal well produced fluid cross section device and method |
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| CN215860141U (en) * | 2021-04-29 | 2022-02-18 | 庆阳市广源基业运输有限公司 | Horizontal well liquid production section testing pipe column based on tracer marking |
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