CN215860141U - Horizontal well liquid production section testing pipe column based on tracer marking - Google Patents
Horizontal well liquid production section testing pipe column based on tracer marking Download PDFInfo
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- CN215860141U CN215860141U CN202120914407.0U CN202120914407U CN215860141U CN 215860141 U CN215860141 U CN 215860141U CN 202120914407 U CN202120914407 U CN 202120914407U CN 215860141 U CN215860141 U CN 215860141U
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Abstract
The utility model discloses a horizontal well liquid production section testing tubular column based on tracer marking, and belongs to the technical field of oil field oil extraction. 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 utility model 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 utility model 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.
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.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the problems in the prior art and provides a horizontal well production profile testing tubular column based on tracer marking.
The utility model 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 utility model 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 utility model 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 utility model 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 utility model.
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 utility model 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 utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
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 specific solid tracer marker 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.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113027430A (en) * | 2021-04-29 | 2021-06-25 | 佘国强 | Horizontal well fluid production section testing pipe column and process based on tracer marking |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027430A (en) * | 2021-04-29 | 2021-06-25 | 佘国强 | Horizontal well fluid production section testing pipe column and process based on tracer marking |
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Effective date of registration: 20220401 Address after: 710021 room 10902, YinChi daoras wealth center, No. 171-1, intersection of Fengcheng Sixth Road and Weiyang Road, economic and Technological Development Zone, Xi'an, Shaanxi Province Patentee after: Xi'an Hengyuan Ruitong Petroleum Technology Service Co.,Ltd. Address before: 745099 agricultural demonstration park at the north end of Xihuan Road, Xifeng District, Qingyang City, Gansu Province Patentee before: Qingyang Guangyuan Jiye Transportation Co.,Ltd. |