CN109505589B - Oil well hot washing paraffin removal shaft temperature field distribution testing method and pipe column - Google Patents
Oil well hot washing paraffin removal shaft temperature field distribution testing method and pipe column Download PDFInfo
- Publication number
- CN109505589B CN109505589B CN201811432291.6A CN201811432291A CN109505589B CN 109505589 B CN109505589 B CN 109505589B CN 201811432291 A CN201811432291 A CN 201811432291A CN 109505589 B CN109505589 B CN 109505589B
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- oil
- thermometer
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- well
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
- E21B47/07—Temperature
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B36/00—Heating, cooling, insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
Abstract
The invention belongs to the technical field of oil field hot-washing paraffin removal, and particularly relates to a method for testing the distribution of a temperature field of an oil well hot-washing paraffin removal shaft and a pipe column. The invention at least comprises thermometer groups which are distributed in the oil pipe from top to bottom at intervals, wherein at least one thermometer in the thermometer groups is positioned between an oil pump in the oil pipe and a screen pipe. The invention realizes the distribution test of the temperature field of the oil well hot washing paraffin removal shaft, solves the problems of high test cost and easiness in being influenced by well conditions of the optical fiber temperature sensor, effectively improves the long-term application reliability of the pipe column, simplifies the field operation procedure, intuitively reflects the temperature change condition in the shaft during the oil well hot washing, and provides a basis for the basic principle and method of optimizing the process parameters during the oil well hot washing.
Description
Technical Field
The invention belongs to the technical field of oil field hot-washing paraffin removal, and particularly relates to a method for testing the distribution of a temperature field of an oil well hot-washing paraffin removal shaft and a pipe column.
Background
The oil well hot washing is one of the most common maintenance measures for maintaining normal production of the oil well, can effectively prevent pipe rod clamping caused by wax precipitation of the oil well, reduces the load of extraction equipment, prolongs the maintenance-free period of the oil well, and reduces the production cost. The most important factors affecting the hot washing effect of the oil well are the temperature distribution of the hot washing medium in the whole shaft, if the process parameters such as the well washing temperature, the well washing displacement and the like are set unreasonably, the temperature of the hot washing medium in the well shaft wax precipitation section is lower than the wax melting temperature, so that the well washing effect is not obvious, or the recovery period of oil production after well washing is long, and even the phenomenon such as rapid reduction of the yield after well washing occurs. The basic principle and method for optimizing the technological parameters during the hot washing of the oil well are put forward by researching the temperature distribution rule of the hot washing cylinder under different well washing temperatures and well washing discharge volumes. At present, the conventional temperature field testing process mainly adopts an optical fiber temperature sensor matched with a magnetic positioner to measure the temperature under different depth coordinates, but has high cost, larger influence by well conditions and great accurate testing difficulty.
Disclosure of Invention
The invention aims to provide a method for testing the distribution of a thermal washing paraffin removal shaft temperature field of an oil well, which has low testing cost and is not easily influenced by well conditions; the second purpose of the invention is to provide a thermal cleaning wax-removing shaft temperature field distribution test pipe column for the oil well, which has higher reliability and simplifies the working procedures of on-site operation; the third purpose of the invention is that the pipe column can intuitively reflect the temperature change condition in the shaft during the hot washing of the oil well.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the utility model provides an oil well heat washes paraffin removal pit shaft temperature field distribution test tubular column, includes oil pipe at least, its characterized in that: the oil well pump also comprises a thermometer group, a sucker rod, an oil well pump and a screen pipe which are arranged in the oil pipe; the oil pump is arranged above the screen pipe, at least one thermometer in the thermometer group is arranged between the oil pump and the screen pipe, and the rest thermometers are sequentially arranged above the oil pump from top to bottom; the thermometer group is detachably connected with the inner side wall of the oil pipe; the upper end of the oil pump is connected with one end of the sucker rod; the other end of the sucker rod is connected with a pumping unit arranged outside the oil pipe.
The plug is connected to the lower end port of the oil pipe.
The thermometer group consists of 3-10 thermometers.
The thermometer group is provided with 4 thermometers, namely a first storage type thermometer, a second storage type thermometer, a third storage type thermometer and a fourth storage type thermometer, wherein the fourth storage type thermometer is positioned between the oil pump in the oil pipe and the sieve tube, and the rest of the first storage type thermometer, the second storage type thermometer and the third storage type thermometer are sequentially arranged above the oil pump in the oil pipe from top to bottom.
The spacing distances between all adjacent thermometers in the thermometer group are equal.
The thermometer group, the sieve tube and the oil pump are connected in the oil tube in a threaded manner.
And a gap is reserved between the sucker rod and a thermometer positioned at the upper part of the oil pump.
And the outer side wall of the upper end of the oil pipe is also connected with an oil pipe joint.
The upper end of the oil pipe is provided with a sleeve joint.
A method for testing the distribution of a temperature field of a hot washing paraffin removal shaft of an oil well is characterized by comprising the following steps:
step 1) adopting an oil pipe to sequentially lower a pipe column connected with a first storage type thermometer, a second storage type thermometer, a third storage type thermometer, an oil pump, a fourth storage type thermometer, a screen pipe and a plug into a target position according to the hanging position of the oil pump;
step 2) opening a sleeve joint valve positioned on the ground, mixing the injected hot fluid with the underground liquid through the descending of an oil sleeve annulus, and driving a sucker rod by an oil pumping unit to enable the underground fluid to enter from a screen pipe to ascend along an oil pipe, and pumping the underground fluid to the ground to be produced from the oil pipe joint;
step 3), continuously recording and measuring the temperature of the corresponding position by the storage type thermometer IV, the storage type thermometer III, the storage type thermometer II and the storage type thermometer I respectively;
step 4), stopping the well, closing a sleeve joint valve, then disassembling the oil extraction wellhead, and lifting a tubular column;
and 5) returning the temperature data of each storage type thermometer, drawing temperature curves corresponding to different well depth positions according to the measured temperature, and fitting to obtain a distribution test curve of the thermal washing paraffin removal shaft temperature field of the oil well.
The invention has the beneficial effects that:
according to the invention, through the thermometer groups which are distributed in the oil pipe at intervals from top to bottom, at least one thermometer in the thermometer groups is positioned between the oil pump in the oil pipe and the sieve tube, so that the distribution test of the temperature field of the oil well thermal washing paraffin removal shaft is realized, the problems that the optical fiber temperature sensor is high in test cost and easy to be influenced by well conditions are solved, the long-term application reliability of the pipe column is effectively improved, and the field operation procedure is simplified. According to the invention, through the arrangement of the storage type thermometer group, the temperature change condition in the shaft during oil well hot washing is intuitively reflected, and a basis is provided for basic principles and methods of process parameter optimization during oil well hot washing.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of the structure of the present invention.
In the figure, a 1-pumping unit; 2-a casing joint; 3-an oil pipe joint; 4-an oil pipe; 5-a first storage thermometer; 6-a second storage thermometer; 7-a storage thermometer III; 8-sucker rod; 9-an oil pump; 10-a storage thermometer IV; 11-screen pipe; 12-plug.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
the temperature field distribution test pipe column of the oil well thermal washing paraffin removal shaft at least comprises an oil pipe 4, a thermometer group arranged in the oil pipe 4, a sucker rod 8, an oil pump 9 and a screen pipe 11, wherein the temperature field distribution test pipe column is shown in FIG. 1; the oil-well pump 9 is arranged above the screen pipe 11, at least one thermometer in the thermometer group is arranged between the oil-well pump 9 and the screen pipe 11, and the rest thermometers are sequentially arranged above the oil-well pump 9 from top to bottom; the thermometer group is detachably connected with the inner side wall of the oil pipe 4; the upper end of the oil pump 9 is connected with one end of the sucker rod 8; the other end of the sucker rod 8 is connected with a pumping unit 1 arranged outside the oil pipe 4.
Embodiment two:
the temperature field distribution test pipe column of the oil well thermal washing paraffin removal shaft at least comprises an oil pipe 4, a thermometer group arranged in the oil pipe 4, a sucker rod 8, an oil pump 9 and a screen pipe 11, wherein the temperature field distribution test pipe column is shown in FIG. 1; the oil-well pump 9 is arranged above the screen pipe 11, at least one thermometer in the thermometer group is arranged between the oil-well pump 9 and the screen pipe 11, and the rest thermometers are sequentially arranged above the oil-well pump 9 from top to bottom; the thermometer group is detachably connected with the inner side wall of the oil pipe 4; the upper end of the oil pump 9 is connected with one end of the sucker rod 8; the other end of the sucker rod 8 is connected with a pumping unit 1 arranged outside the oil pipe 4.
The thermometer group is provided with 4 thermometers, namely a first storage type thermometer 5, a second storage type thermometer 6, a third storage type thermometer 7 and a fourth storage type thermometer 10, wherein the fourth storage type thermometer is positioned between the oil pump 9 and the screen pipe 11 in the oil pipe 4, and the rest of the first storage type thermometer, the second storage type thermometer and the third storage type thermometer are sequentially arranged above the oil pump 9 in the oil pipe 4 from top to bottom.
Preferably, the oil pipe further comprises a plug 12, and the plug 12 is connected to the lower end port of the oil pipe 4.
Preferably, the thermometer is a storage thermometer.
Preferably, the thermometer group, the sieve tube 11 and the oil pump 9 are all connected in the oil pipe 4 in a threaded manner.
The upper end of the oil pipe 4 is provided with a sleeve joint 2.
In actual use, the pumping unit 1 arranged on the ground is connected with the oil pump 9 through the pumping rod 8 in the oil pipe 4. The thermometer group, the oil pump 9 and the screen 11 are connected in the oil pipe 4 in sequence from top to bottom, but at least one thermometer in the thermometer group is located between the oil pump 9 and the screen 11 in the oil pipe 4. The thermometer group, the oil-well pump 9 and the sieve tube 11 can also be directly connected by screw threads. The thermometer group can encrypt the arrangement of the thermometer according to the well depth condition. The thermometer adopts the storage type thermometer to record the temperature change condition of the whole oil well hot washing and cleaning process, so that the follow-up data analysis is convenient. The model of the memory thermometer is JDYM-120-45-0.05. The plug 12 prevents leakage from the pipe and provides a seal.
A method for testing the distribution of a temperature field of a hot washing paraffin removal shaft of an oil well comprises the following steps: the method comprises the following steps:
step 1), tubing is adopted to sequentially lower a tubing string connected with a first storage thermometer 5, a second storage thermometer 6, a third storage thermometer 7, an oil pump 9, a fourth storage thermometer 10, a screen pipe 11 and a plug 12 to a target position according to the hanging position of the oil pump;
step 2) opening a valve of a sleeve joint 2 positioned on the ground, mixing the injected hot fluid with underground liquid through the descending of an oil sleeve annulus, and driving a sucker rod by an oil pumping unit to enable the underground fluid to enter from a screen pipe to ascend along an oil pipe, and pumping the underground fluid to the ground to be produced from the oil pipe joint;
step 3), continuously recording and measuring the temperature of the corresponding position by the storage type thermometer IV, the storage type thermometer III, the storage type thermometer II and the storage type thermometer I respectively;
step 4), stopping the well, closing a valve of the sleeve joint 2, then disassembling the oil extraction wellhead, and lifting a tubular column;
and 5) returning the temperature data of each storage type thermometer, drawing temperature curves corresponding to different well depth positions according to the measured temperature, and fitting to obtain a distribution test curve of the thermal washing paraffin removal shaft temperature field of the oil well.
According to the invention, through the arrangement of the thermometer group, the distribution test of the temperature field of the oil well thermal washing paraffin removal shaft is realized, the problems that the optical fiber temperature sensor is high in test cost and easy to be influenced by the well condition are solved, the reliability of the optical fiber temperature sensor for long-term application is effectively improved, and the field operation procedure is simplified. The method can intuitively reflect the temperature change condition in the shaft during the thermal washing of the oil well, draw temperature curves corresponding to different well depth positions, and fit the temperature curves to obtain a temperature field distribution test curve of the thermal washing paraffin removal shaft of the oil well, thereby providing scientific basis for determining thermal washing process, medium and parameters of different paraffin removal shafts of different blocks in later period.
Embodiment III:
the temperature field distribution test string of the oil well heat washing paraffin removal shaft shown in fig. 1 is different from the second embodiment in that: the thermometer group consists of 3-10 thermometers, and is not limited to 4 in the second embodiment.
When in actual use, the temperature information of different positions can be acquired by the arrangement of the thermometer group, so that the method is convenient for comprehensively analyzing the temperature change in the well, and provides scientific and accurate basis for basic principles and methods of optimizing the technological parameters during the hot washing of the oil well. The number of the thermometers is increased according to actual needs, and the number of the thermometers is increased according to the actual needs after the basic test is carried out on the thermometer with 3-10 thermometers.
Embodiment four:
on the basis of the second or third embodiment, the interval distances between all adjacent thermometers in the thermometer group are equal.
When in actual use, the 4 thermometers arranged in the thermometer group, namely the first storage type thermometer 5, the second storage type thermometer 6 and the third storage type thermometer 7 are positioned above the wax precipitation well section, and the three thermometers can meet the requirements, so that the test cost is reduced to the minimum, and the cost is saved. The interval distances between all adjacent thermometers in the thermometer group are equal, so that the obtained data is more beneficial to data analysis. At least one thermometer in the thermometer group, namely a storage thermometer IV 10, is arranged between the oil pump 9 and the screen pipe 11, and can record all temperature information of the well paraffin precipitation part, thereby ensuring the comprehensiveness of data acquisition.
Fifth embodiment:
the temperature field distribution test string of the oil well heat washing paraffin removal shaft shown in fig. 1 is different from the second embodiment in that: a gap is reserved between the sucker rod 8 and a thermometer positioned at the upper part of the oil pump 9.
When in actual use, the gap between the sucker rod 8 and the thermometer on the upper part of the oil pump 9 is arranged, so that friction generated between the sucker rod 8 and the oil pump 9 is avoided, equipment damage is avoided, and the safety and continuity of the thermometer are ensured to acquire data.
Example six:
the temperature field distribution test string of the oil well heat washing paraffin removal shaft shown in fig. 1 is different from the second embodiment in that: the outer side wall of the upper end of the oil pipe 4 is also connected with an oil pipe joint 3.
When in actual use, the oil pipe joint 3 at the outer side wall of the upper end of the oil pipe 4 is connected with a pipeline on the ground, so that the oil extraction operation can be normally performed while acquiring the related temperature test data.
In summary, the invention realizes the distribution test of the temperature field of the oil well hot washing paraffin removal shaft, solves the problems of high test cost and easiness in being influenced by well conditions of the optical fiber temperature sensor, effectively improves the long-term application reliability of the tubular column, simplifies the field operation procedure, can intuitively reflect the temperature change condition in the shaft during the oil well hot washing, and provides a basis for the basic principle and method of optimizing the technological parameters during the oil well hot washing.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.
The technical solutions between the embodiments may be combined with each other, but it is necessary to base the implementation on the basis of those skilled in the art that when the combination of technical solutions contradicts or cannot be implemented, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.
Claims (6)
1. The utility model provides an oil well heat washes paraffin removal pit shaft temperature field distribution test tubular column, includes oil pipe (4) at least, its characterized in that: the oil well pump also comprises a thermometer group, a sucker rod (8), an oil well pump (9) and a screen pipe (11) which are arranged in the oil pipe (4); the oil pump (9) is arranged above the screen pipe (11), at least one thermometer in the thermometer group is arranged between the oil pump (9) and the screen pipe (11), and the rest thermometers are sequentially arranged above the oil pump (9) from top to bottom; the thermometer group is detachably connected with the inner side wall of the oil pipe (4); the upper end of the oil pump (9) is connected with one end of the sucker rod (8); the other end of the sucker rod (8) is connected with a pumping unit (1) arranged outside the oil pipe (4);
the oil pipe is characterized by further comprising a plug (12), wherein the plug (12) is connected to the lower end port of the oil pipe (4); the thermometer group consists of 3-10 thermometers; the thermometer group, the sieve tube (11) and the oil pump (9) are connected in the oil pipe (4) in a threaded manner; and a gap is reserved between the sucker rod (8) and a thermometer positioned at the upper part of the oil pump (9).
2. The well heat-wash paraffin removal wellbore temperature field distribution test string of claim 1, wherein: the thermometer group is provided with 4 thermometers, namely a first storage type thermometer, a second storage type thermometer, a third storage type thermometer and a fourth storage type thermometer, wherein the fourth storage type thermometer is positioned between an oil pump (9) in the oil pipe (4) and a screen pipe (11), and the other first storage type thermometer, the second storage type thermometer and the third storage type thermometer are sequentially arranged above the oil pump (9) in the oil pipe (4) from top to bottom.
3. A well heat wash paraffin removal wellbore temperature field distribution test string as defined in any one of claims 1, 2, wherein: the spacing distances between all adjacent thermometers in the thermometer group are equal.
4. The well heat-wash paraffin removal wellbore temperature field distribution test string of claim 1, wherein: the outer side wall of the upper end of the oil pipe (4) is also connected with an oil pipe joint (3).
5. The well heat-wash paraffin removal wellbore temperature field distribution test string of claim 1, wherein: the upper end of the oil pipe (4) is provided with a sleeve joint (2).
6. The method for testing the temperature field distribution of the oil well hot-washing paraffin removal shaft is characterized by adopting the oil well hot-washing paraffin removal shaft temperature field distribution testing tubular column according to claim 2, and is characterized in that:
step 1) adopting an oil pipe to sequentially lower a pipe column connected with a first storage type thermometer, a second storage type thermometer, a third storage type thermometer, an oil pump, a fourth storage type thermometer, a screen pipe and a plug into a target position according to the hanging position of the oil pump;
step 2) opening a sleeve joint valve positioned on the ground, mixing the injected hot fluid with the underground liquid through the descending of an oil sleeve annulus, and driving a sucker rod by an oil pumping unit to enable the underground fluid to enter from a screen pipe to ascend along an oil pipe, and pumping the underground fluid to the ground to be produced from the oil pipe joint;
step 3), continuously recording and measuring the temperature of the corresponding position by the storage type thermometer IV, the storage type thermometer III, the storage type thermometer II and the storage type thermometer I respectively;
step 4), stopping the well, closing a sleeve joint valve, then disassembling the oil extraction wellhead, and lifting a tubular column;
and 5) returning the temperature data of each storage type thermometer, drawing temperature curves corresponding to different well depth positions according to the measured temperature, and fitting to obtain a distribution test curve of the thermal washing paraffin removal shaft temperature field of the oil well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811432291.6A CN109505589B (en) | 2018-11-28 | 2018-11-28 | Oil well hot washing paraffin removal shaft temperature field distribution testing method and pipe column |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811432291.6A CN109505589B (en) | 2018-11-28 | 2018-11-28 | Oil well hot washing paraffin removal shaft temperature field distribution testing method and pipe column |
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| Publication Number | Publication Date |
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| CN109505589A CN109505589A (en) | 2019-03-22 |
| CN109505589B true CN109505589B (en) | 2023-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811432291.6A Active CN109505589B (en) | 2018-11-28 | 2018-11-28 | Oil well hot washing paraffin removal shaft temperature field distribution testing method and pipe column |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112065328A (en) * | 2019-06-10 | 2020-12-11 | 中国石油天然气股份有限公司 | Device and method for cleaning wax in oil pipe through hot washing |
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| CN201865632U (en) * | 2010-11-26 | 2011-06-15 | 中国石油天然气股份有限公司 | Wax removing and preventing device for oil wells |
| CN102168551A (en) * | 2011-01-19 | 2011-08-31 | 杨平 | Device and method for continuously measuring working fluid level depth of oil well and continuously metering produced liquid |
| CN201963296U (en) * | 2011-01-19 | 2011-09-07 | 杨平 | Degree of depth continuous measurement of oil well producing fluid level and extraction liquid continuous metering device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| BR0108895B1 (en) * | 2000-03-02 | 2011-01-25 | method of operating a downhole device in an oil well, and, oil well featuring a borehole and a pipe structure. | |
| US20080087434A1 (en) * | 2006-10-13 | 2008-04-17 | Ronald Wilen | Engine/steam generator with afterburner |
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- 2018-11-28 CN CN201811432291.6A patent/CN109505589B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201865632U (en) * | 2010-11-26 | 2011-06-15 | 中国石油天然气股份有限公司 | Wax removing and preventing device for oil wells |
| CN102168551A (en) * | 2011-01-19 | 2011-08-31 | 杨平 | Device and method for continuously measuring working fluid level depth of oil well and continuously metering produced liquid |
| CN201963296U (en) * | 2011-01-19 | 2011-09-07 | 杨平 | Degree of depth continuous measurement of oil well producing fluid level and extraction liquid continuous metering device |
| CN102206995A (en) * | 2011-05-26 | 2011-10-05 | 河南省科学院同位素研究所有限责任公司 | System for continuously monitoring temperature and pressure during steam injection and soaking process |
| CN103821479A (en) * | 2014-02-17 | 2014-05-28 | 康庆刚 | Device not pressing oil reservoir during thermal washing of mechanical producing well |
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| CN109505589A (en) | 2019-03-22 |
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