CN204476397U - Oil well is high temperature resistant temperature-measuring, pressure-measuring tubing - Google Patents
Oil well is high temperature resistant temperature-measuring, pressure-measuring tubing Download PDFInfo
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- CN204476397U CN204476397U CN201520110575.9U CN201520110575U CN204476397U CN 204476397 U CN204476397 U CN 204476397U CN 201520110575 U CN201520110575 U CN 201520110575U CN 204476397 U CN204476397 U CN 204476397U
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Abstract
The utility model discloses the high temperature resistant temperature-measuring, pressure-measuring tubing of a kind of oil well, comprise the thermocouple and elongated spool that are made up of two temperature-sensitive conductors, metal sealing pipe is outside equipped with at described temperature-sensitive conductor, thermostable heat-conductive insulating medium layer is filled with between two temperature-sensitive conductors and between two temperature-sensitive conductors and metal sealing inside pipe wall, this thermostable heat-conductive insulating medium layer is also present between thermocouple working end and metal sealing pipe, leaves gap between metal sealing pipe and slender threads inside pipe wall.This is high temperature resistant, and temperature-measuring, pressure-measuring tubing for oil well can not only realize the same pipe compatibility of thermometric pressure measurement, can also adapt to the thermometric pressure measurement requirement under fireflood technology hot conditions, and detect accurately.
Description
Technical field
The utility model relates to the test equipment of technical field of petroleum extraction, particularly relates to oil well thermometric pressure tester.
Background technology
In field of petroleum exploitation, main flow production technique for viscous crude is called for short SAGD technology > from employing steam assisted gravity drainage techniques < and changes employing fireflood technology into, steam assisted gravity drainage techniques adopts the mode injecting Steam Heating oil reservoir continuously to underground, consistence or super consistence crude oil are driven to around in producing well, so that extraction, fireflood technology is then a small amount of heavy ingredient burning that cannot will be utilized in viscous crude in ignition well, viscous crude in the producing well of periphery is more effectively heated viscosity reduction, improve mobility, thus exploit out more easily, the heating-up temperature to viscous crude adopting fireflood technology to obtain is higher than adopting steam assisted gravity drainage techniques, this brings certain difficulty with regard to giving the detection of oil temperature and pressure, conventional temperature-measuring, pressure-measuring tubing for oil well obviously cannot adapt to such high temperature, can not adapt to the requirement of its thermometric pressure measurement.
Utility model content
For the above-mentioned deficiency existing for prior art, technical problem to be solved in the utility model is to provide the high temperature resistant temperature-measuring, pressure-measuring tubing of a kind of oil well, the same pipe that it can not only realize thermometric pressure measurement is compatible, can also adapt to the thermometric pressure measurement requirement under fireflood technology hot conditions, and detects accurately.
In order to solve the problems of the technologies described above, the high temperature resistant temperature-measuring, pressure-measuring tubing of a kind of oil well of the present utility model, comprise the thermocouple and elongated spool that are made up of two temperature-sensitive conductors, metal sealing pipe is outside equipped with at described temperature-sensitive conductor, thermostable heat-conductive insulating medium layer is filled with between two temperature-sensitive conductors and between two temperature-sensitive conductors and metal sealing inside pipe wall, this thermostable heat-conductive insulating medium layer is also present between thermocouple working end and metal sealing pipe, leaves gap between metal sealing pipe and slender threads inside pipe wall.
In said structure, owing to being outside equipped with metal sealing pipe at described temperature-sensitive conductor, thermostable heat-conductive insulating medium layer is filled with between two temperature-sensitive conductors and between two temperature-sensitive conductors and metal sealing inside pipe wall, then thermostable heat-conductive insulating medium layer arrange can make composition thermocouple two temperature-sensitive conductors between keep insulation, and also keep insulating between two temperature-sensitive conductors and metal sealing pipe, thermocouple can normally be carried out the work, thermostable heat-conductive insulating medium layer also has very high coefficient of thermal conductivity simultaneously, two temperature-sensitive conductors can be made to perceive the reservoir temperature transmitted by metal sealing pipe in time, again because this thermostable heat-conductive insulating medium layer is also present between thermocouple working end and metal sealing pipe, then keep between thermocouple working end and metal sealing pipe insulating isolating, effectively can prevent electromagnetic interference, thus ensure that the detection accuracy of temperature detection, leave gap between metal sealing pipe with slender threads inside pipe wall then to ensure that and by high pressure nitrogen or other pressure measurement gas inject in elongated spool and the pressure-transmission tube that is communicated with elongated spool, the pressure detecting of down-hole single-point or multiple spot can be realized to utilize the principle of air pressure balance simply from well head.Thus this structure can not only realize the same pipe compatibility of thermometric pressure measurement, can also adapt to the thermometric pressure measurement requirement under fireflood technology hot conditions, and detect accurately.
A kind of preferred embodiment of the present utility model, described thermostable heat-conductive insulating medium layer is magnesia high temperature bisque.Adopt this embodiment, described thermostable heat-conductive insulating medium layer is filled with magnesia powder, magnesia is the good heat-conducting insulation material under high temperature, and magnesia high-temperature powder more can heat conductive insulating under the condition of high temperature more than 1000 DEG C, can adapt to the working environment of fireflood technology more than 700 DEG C well.
Another kind of preferred embodiment of the present utility model, leaves gap through along its length between described elongated spool and metal sealing pipe.Adopt this embodiment, ensure that the unimpeded filling along its length of the pressure measurement gases such as nitrogen, reach synchronously carrying out of pressure measurement thermometric.
Another preferred embodiment of the present utility model, staggers with a gap and is provided with three pairs of thermocouples in described elongated spool.Adopt this embodiment, in an elongated spool, the temperature survey of three location points can be implemented different oil reservoirs.
The further preferred embodiment of the utility model, is provided with isolation mount between described metal sealing pipe and slender threads inside pipe wall.Adopt this embodiment, metal sealing pipe and interior thermocouple thereof can be made to keep the operating position determined.
Another further preferred embodiment of the utility model, described isolation mount endoporus and metal sealing pipe are connected, and isolation mount periphery circumferentially contacts with interval with slender threads inside pipe wall.Adopt this embodiment, be fixedly connected with between isolation mount with metal sealing pipe, can move with metal sealing pipe, arrive in elongated spool to make the installation of TC easily, and leave gap because contacting with interval between isolation mount with elongated spool, ensure the unimpeded of pressure measurement gas.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the high temperature resistant temperature-measuring, pressure-measuring tubing of the utility model oil well is described in further detail.
Fig. 1 is the structural representation of a kind of detailed description of the invention of the high temperature resistant temperature-measuring, pressure-measuring tubing of the utility model oil well;
Fig. 2 is metal sealing pipe internal construction enlarged diagram in structure shown in Fig. 1;
Fig. 3 is the cross section enlarged diagram of structure shown in Fig. 1.
In figure: the elongated spool of 1-, 2-metal sealing pipe, 3-isolation mount, 4-temperature-sensitive conductor, 5-thermostable heat-conductive insulating medium layer, 6-thermocouple working end.
Detailed description of the invention
At Fig. 1, in oil well shown in Fig. 2 and Fig. 3 is high temperature resistant temperature-measuring, pressure-measuring tubing, elongated spool 1 is 316L stainless steel elongated tubular, its external diameter is mostly 6-10 millimeter, wall thickness is generally 0.6-1 millimeter, length is generally all greater than 1000 meters, the thermocouple that two temperature-sensitive conductors 4 form is in elongated spool 1, two temperature-sensitive conductor 4 materials are respectively nickel cobalt (alloy) and nickel alumin(i)um alloy, the thermocouple that these two kinds of temperature sensing materials form can well meet the thermometric requirement of about 700 DEG C high temperature in fireflood technology heavy oil tested layer, two temperature-sensitive conductor 4 one end are welded to each other and form thermocouple working end 6 together, metal sealing pipe 2 is outside equipped with at temperature-sensitive conductor 4, thermostable heat-conductive insulating medium layer 5 is filled with between two temperature-sensitive conductors 4 and between two temperature-sensitive conductors 4 and metal sealing pipe 2 inwall, this thermostable heat-conductive insulating medium layer 5 is also present between thermocouple working end 6 and metal sealing pipe 2, thermostable heat-conductive insulating medium layer 5 is magnesia high temperature bisque, like this, contact between two temperature-sensitive conductors 4 and with mutually isolated generation between metal sealing pipe 2, between thermocouple working end 6 with elongated spool 1, mutually isolated equally generation contacts, ensure that insulation each other and heat conduction.Gap through is along its length left, to ensure the unimpeded of pressure measurement gas between metal sealing pipe 2 and elongated spool 1 inwall.In elongated spool 1, be provided with three pairs of thermocouples with a gap, three pairs of thermocouples stagger setting along its length, to measure the temperature of different oil reservoir or same oil reservoir diverse location as required.Between described metal sealing pipe 2 and elongated spool 1 inwall, compartment of terrain is provided with some isolation mounts 3 along its length, isolation mount 3 is Thin Elastic flat parts, quantity and the arrangement position of its internal via shape and metal sealing pipe 2 in hole are corresponding, and and between metal sealing pipe 2, utilize its elastic card to be solidly connected, isolation mount 3 peripheral shape is polygon, make it circumferentially contact with interval with elongated spool 1 inwall, thus form the gap current for pressure measurement gas between isolation mount 3 and elongated spool 1.
Thermocouple working end 6 in the course of work in metal sealing pipe 2 is in fireflood oil well heavy oil tested layer with elongated spool 1 bottom, the other end being in the thermocouple two temperature-sensitive conductor 4 in metal sealing pipe 2 is in outside well mouth of oil well, temperature-sensitive conductor 4 is connected with thermocouple signal treatment system, thus in the aboveground temperature measuring thick oil underground well layer; Pressure measurement gas enters shaft bottom by the gap through along its length left between elongated spool 1 and each metal sealing pipe 2, to carry out down-hole pressure detection.
Above-mentionedly only list detailed description of the invention more of the present utility model, but the utility model is not limited in this, can also make more improvement and conversion.The material such as forming two kinds of temperature-sensitive conductors 4 of thermocouple may not be nickel cobalt (alloy) and nickel alumin(i)um alloy, but other temperature sensing material, and it is three right that the logarithm of described thermocouple may not be, but a pair, two to, four to or more right; Described thermostable heat-conductive insulating medium layer 5 may not be magnesia high temperature bisque, but the dielectric layer be made up of other thermostable heat-conductive insulation materials.And so on, as long as improvement done on the utility model general principle basis and conversion, all should be considered as falling in protection domain of the present utility model.
Claims (6)
1. the high temperature resistant temperature-measuring, pressure-measuring tubing of oil well, comprise the thermocouple and elongated spool (1) that are made up of two temperature-sensitive conductors (4), it is characterized in that: be outside equipped with metal sealing pipe (2) described temperature-sensitive conductor (4), thermostable heat-conductive insulating medium layer (5) is filled with between two temperature-sensitive conductors (4) and between two temperature-sensitive conductors (4) and metal sealing pipe (2) inwall, this thermostable heat-conductive insulating medium layer (5) is also present between thermocouple working end (6) and metal sealing pipe (2), gap is left between metal sealing pipe (2) and elongated spool (1) inwall.
2. the high temperature resistant temperature-measuring, pressure-measuring tubing of oil well according to claim 1, is characterized in that: described thermostable heat-conductive insulating medium layer (5) is magnesia high temperature bisque.
3. the high temperature resistant temperature-measuring, pressure-measuring tubing of oil well according to claim 1, is characterized in that: leave gap through along its length between described elongated spool (1) and metal sealing pipe (2).
4. the high temperature resistant temperature-measuring, pressure-measuring tubing of oil well according to claim 1, is characterized in that: staggering with a gap in described elongated spool (1) is provided with three pairs of thermocouples.
5. the high temperature resistant temperature-measuring, pressure-measuring tubing of oil well according to claim 1,3 or 4, is characterized in that: be provided with isolation mount (3) between described metal sealing pipe (2) and elongated spool (1) inwall.
6. the high temperature resistant temperature-measuring, pressure-measuring tubing of oil well according to claim 5, is characterized in that: described isolation mount (3) endoporus and metal sealing pipe (2) are connected, and isolation mount (3) periphery circumferentially contacts with interval with elongated spool (1) inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520110575.9U CN204476397U (en) | 2015-02-15 | 2015-02-15 | Oil well is high temperature resistant temperature-measuring, pressure-measuring tubing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520110575.9U CN204476397U (en) | 2015-02-15 | 2015-02-15 | Oil well is high temperature resistant temperature-measuring, pressure-measuring tubing |
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| Publication Number | Publication Date |
|---|---|
| CN204476397U true CN204476397U (en) | 2015-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520110575.9U Expired - Fee Related CN204476397U (en) | 2015-02-15 | 2015-02-15 | Oil well is high temperature resistant temperature-measuring, pressure-measuring tubing |
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| CN (1) | CN204476397U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529088A (en) * | 2016-01-29 | 2016-04-27 | 中国石油天然气股份有限公司 | Oil well downhole temperature measuring cable |
| CN106499348A (en) * | 2016-11-04 | 2017-03-15 | 吉林省三和电气系统工程有限公司 | A kind of testing pressure down hole measuring temp. wire cable |
| CN106932725A (en) * | 2017-02-16 | 2017-07-07 | 福建福清核电有限公司 | A kind of batteries on-Line Monitor Device |
| CN111312418A (en) * | 2020-04-07 | 2020-06-19 | 中国科学技术大学 | Thermal probe applied to high-temperature ball bed effective thermal conductivity measurement |
-
2015
- 2015-02-15 CN CN201520110575.9U patent/CN204476397U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529088A (en) * | 2016-01-29 | 2016-04-27 | 中国石油天然气股份有限公司 | Oil well downhole temperature measuring cable |
| CN106499348A (en) * | 2016-11-04 | 2017-03-15 | 吉林省三和电气系统工程有限公司 | A kind of testing pressure down hole measuring temp. wire cable |
| CN106499348B (en) * | 2016-11-04 | 2019-02-26 | 吉林省三和电气系统工程有限公司 | A kind of testing pressure down hole measuring temperature wire cable |
| CN106932725A (en) * | 2017-02-16 | 2017-07-07 | 福建福清核电有限公司 | A kind of batteries on-Line Monitor Device |
| CN111312418A (en) * | 2020-04-07 | 2020-06-19 | 中国科学技术大学 | Thermal probe applied to high-temperature ball bed effective thermal conductivity measurement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20210215 |