CN108035707A - Dangerous temperature monitoring method before a kind of combustion in situ igniting - Google Patents
Dangerous temperature monitoring method before a kind of combustion in situ igniting Download PDFInfo
- Publication number
- CN108035707A CN108035707A CN201711129395.5A CN201711129395A CN108035707A CN 108035707 A CN108035707 A CN 108035707A CN 201711129395 A CN201711129395 A CN 201711129395A CN 108035707 A CN108035707 A CN 108035707A
- Authority
- CN
- China
- Prior art keywords
- temperature
- metal
- probe
- monitoring device
- combustion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 20
- 238000012544 monitoring process Methods 0.000 title claims abstract description 20
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 14
- 239000000523 sample Substances 0.000 claims abstract description 59
- 229910052751 metal Inorganic materials 0.000 claims abstract description 43
- 239000002184 metal Substances 0.000 claims abstract description 43
- 238000012806 monitoring device Methods 0.000 claims abstract description 19
- 230000009977 dual effect Effects 0.000 claims abstract description 15
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 230000004927 fusion Effects 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 8
- 229910001092 metal group alloy Inorganic materials 0.000 abstract description 5
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- 238000005275 alloying Methods 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000003129 oil well Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000002459 sustained effect Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000010793 Steam injection (oil industry) Methods 0.000 description 2
- 239000002671 adjuvant Substances 0.000 description 2
- 230000005465 channeling Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 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
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
- E21B47/07—Temperature
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Fire-Detection Mechanisms (AREA)
Abstract
Dangerous temperature monitoring method before lighting a fire the present invention provides a kind of combustion in situ, this method include：A kind of dual probe monitoring device is provided, on the outside of screen casing, underground is placed into screen casing, for monitoring downhole temperature；Wherein, the dual probe monitoring device includes two temp probes, and one of probe is exposed to outer, actual temperature under monitoring well, another probe embedment is by simple metal or the cured metal derby of metal alloy.The method of the present invention can recognize that dangerous temperature before the injection well igniting of judgement combustion in situ, takes corresponding safety measure in time, protects test equipment and casing.
Description
Technical field
The present invention is dangerous temperature monitoring method before lighting a fire on a kind of combustion in situ, can recognize that and judges combustion in situ injection
Dangerous temperature before the fire of well point, takes corresponding safety measure in time, protects test equipment and casing, belongs to oilfield safety exploitation neck
Domain.
Background technology
Situ combustion technology is also known as fireflood, is a kind of production technique that can increase substantially recovery factor of heavy oil reservoir, mainly
It is by the use of the heavy component in in-place oil as fuel, by the use of air or oxygen rich gas as combustion adjuvant, takes spontaneous combustion and people
The methods of work is lighted a fire makes reservoir temperature reach crude oil burning point, and is continuously injected into combustion adjuvant, makes Crude Oil sustained combustion, and burning is anti-
Substantial amounts of heat, heated oil reservoir should be produced so that reservoir temperature rises to 600~700 DEG C, and heavy component cracks at high temperature, note
Gas, the light oil of heavy oil pyrolysis generation, the gas of burning generation and the water vapour entered is used to drive crude oil to production well stream
It is dynamic, and produced from producing well.
Combustion in situ key technology research is concentrated mainly at present：Ignition method, completion method, tracing method, monitoring side
Method, output gas disposal, auxiliary exploitation, profile control closure, indoor simulation etc..Safety in production prediction scheme is also extended through in each of production
Link, but the uncertain security risk for always having some non-artificial influences the normal implementation of the technology, as offset well steams before lighting a fire
Channeling conductance causes this well temperature to raise oxidizing fire, and oil reservoir, which returns oil, causes well cylinder roasting etc..Do not have once temperature in wellbore is excessive
Timely processing is obtained, the lighter may damage test equipment, and severe one may burn out casing and cementing concrete, scrap producing well.
In the prior art, generally up to 800 DEG C, safe heatproof is usually no more than the instantaneous heatproof of combustion in situ high temperature resistance instrument
600 DEG C, if unexpected oxidizing fire occurs before the processes such as underground Residual oil displacement do not complete, the lighter burns instrument, and severe one is burnt
Casing is ruined, causes oil well to scrap, for that up to the purpose of protection test equipment and oil well, must control bottom hole temperature (BHT) below 600 DEG C
Even less than 400 DEG C.Before general watered out reservoirs igniting, water flooding is expelled near wellbore zone with air or nitrogen, sets up 3 to 4
A temperature monitoring point, but due to many uncontrollable factors, such as：There is temperature anomaly in temp probe damage, at this moment cannot effectively sentence
Surely it is probe problem or abnormal temperature locally occurs in underground, is delayed optimization process opportunity, causes underground to catch fire, burn downhole instrument
Device and casing, cause oil well to scrap.When temperature rises, only dual probe produces following trend, could illustrate probe not
Damage, there is abnormal temperature in underground, referring to Fig. 1.
Through looking into, the correlation technique report of dangerous temperature before simple and effective monitoring combustion in situ igniting is not found.
The content of the invention
It is an object of the present invention to develop dangerous temperature monitoring method before a kind of combustion in situ is lighted a fire, can identify in real time
Judge the dangerous temperature that underground is produced by unexpected oxidation, implement temperature reduction technology in time, protect test equipment and casing.
In order to achieve the above object, dangerous temperature monitoring method before lighting a fire the present invention provides a kind of combustion in situ, this method bag
Include：A kind of dual probe monitoring device is provided, on the outside of screen casing, underground is placed into screen casing, for monitoring downhole temperature；Its
In, the dual probe monitoring device includes two temp probes, and one of probe is outside, actual temperature under monitoring well,
Another probe embedment is by simple metal or the cured metal derby of metal alloy.
Specific embodiment according to the present invention, in dual probe monitoring device of the invention, two temp probes can pass through
Connection is to ground displaying alarm.Alternatively, two temp probes can be passed by connection to temperature sensor, the temperature difference
Sensor further can connect warning device by cable.
Specific embodiment according to the present invention, it is described by simple metal or metal in dual probe monitoring device of the invention
The cured metal derby of alloy is placed in high temperature resistant metal housing.
Specific embodiment according to the present invention, in dual probe monitoring device of the invention, the high temperature resistant metal housing
To resist the metal shell of 1000 DEG C of temperatures above.
Specific embodiment according to the present invention, it is described by simple metal or metal in dual probe monitoring device of the invention
The cured metal derby of alloy is the metal derby of 250-600 DEG C of fusion temperature (such as 250-300 DEG C or 400-600 DEG C).
In conclusion technical scheme, is popped one's head in using two temperature, one exposed to outer, actual temperature under monitoring well
Degree, an embedment by simple metal or metal alloy (unlimited, to can be considered any crystal for having certain fusing point) cured cavity, when
When downhole temperature is normal, two temperature probe temperature difference very little under conduction of heat, when downhole temperature exceedes simple metal or alloy gold
During the melting temperature of category, because simple metal or alloying metal are crystal, there is certain melting temperature, at this moment the temperature of two temperature probe
Difference can gradually increase, and when increasing to a certain range (50-150 DEG C), can determine that downhole temperature exception, ground alarm, can adopt at this time
Pit shaft cooling is carried out with a variety of methods such as water filling, note nitrogen, makes two temperature probe temperature subtractive is small to reach zone of reasonableness, protection test
Equipment and casing, guarantee safe production.
Beneficial effects of the present invention：
(1) design is simple, strong operability.
(2) monitoring in real time, susceptibility are high.
(3) disposal is timely, ensures production.
Brief description of the drawings
Fig. 1 is probe temperature variation tendency simulation drawing.
Fig. 2 is single line abnormal temperature decision maker structure diagram.In figure, 1- screen casings, 2- exposed temperatures are popped one's head in, and are buried in 3-
Temp probe, 4- simple metal or alloying metal, 5- temperature sensors, 6- temperature sensing cables.
Fig. 3 is two-wire danger high temperature decision maker structure diagram.In figure, 1- screen casings, 2- exposed temperatures are popped one's head in, and are buried in 3-
Temp probe, 4- simple metal or alloying metal.
Embodiment
Illustrate the implementation and application effect of the technology of the present invention below in conjunction with specific embodiment, but these embodiments are not intended to
Limit the scope of the invention.
Embodiment 1
Refer to Fig. 2, there is provided dangerous high temperature monitoring device before a kind of combustion in situ igniting, it includes two temp probes：
Exposed temperature probe 2 buries temp probe 3 with interior；For exposed temperature probe 2 outside, actual temperature under monitoring well, inside buries temperature
The embedment of probe 3 is by 4 cured cavity of simple metal or metal alloy；Two temp probes pass through connection to temperature sensor
5.Temperature sensor 5 is connected to ground alarm device (not shown) by cable 6.The device is when making, with copper or iron
It is housing Deng more than 1000 DEG C of metal of high temperature resistance, the simple metal or alloying metal 4 of the internal different melting points of encapsulation as needed
(lead:327 DEG C, tin:232 DEG C) setting melting temperature is at 250-300 DEG C, and pre-buried temp probe 3.The making connection of miscellaneous part
Process can refer to the prior art.
The exposed temperature probe 2 of above-mentioned monitoring device is tied up in 1 outer sustained height or close of screen casing with the interior temp probe 3 that buries
Highly, with being connected on temperature sensor, with well design tubing string lower going-into-well.Temperature sensor and ground displaying alarm connect
Connect.Exposed temperature probe 2 is set with the interior temperature difference for burying temp probe 3 up to 50 DEG C of alarms, is considered as temperature anomaly, it is possible to offset well
Channeling, at this moment can be solved by closing down offset well steam injection.Ensure that subsequent handling normally completes, and protect test equipment not to be damaged.
Embodiment 2
Refer to Fig. 3, there is provided dangerous high temperature monitoring device before a kind of combustion in situ igniting, it includes two temp probes：
Exposed temperature probe 2 buries temp probe 3 with interior；For exposed temperature probe 2 outside, actual temperature under monitoring well, inside buries temperature
The embedment of probe 3 is by 4 cured cavity of simple metal or metal alloy；Two temp probes are shown by connection to ground respectively
Show warning device (not shown).The monitoring device make when, be with more than 1000 DEG C of metal of the high temperature resistances such as copper or iron
Housing, the 4 (aluminium of simple metal or alloying metal of the internal different melting points of encapsulation as needed:660 DEG C, zinc:419.5 DEG C etc.) set and melt
Point temperature is at 400-600 DEG C, and pre-buried temp probe 3.The making connection procedure of miscellaneous part can refer to the prior art.
The exposed temperature probe 2 of above-mentioned monitoring device is tied up in 1 outer sustained height or close of screen casing with the interior temp probe 3 that buries
Highly, with well design tubing string lower going-into-well.Exposed temperature probe 2 and interior 50 DEG C of the temperature difference for burying temp probe 3 are set, generally
Oil well normal temperature is at 60-100 DEG C, that is to say, that setting works as downhole temperature more than 400 DEG C, is considered as dangerous high temperature, underground
Oxidation and spontaneous combustion is likely to occur, at this moment can reduce well temperature by closing down the measure such as offset well steam injection or water filling, nitrogen injection.Ensure follow-up
Process normally completes, and protects test equipment and casing etc. not to be damaged.
What is finally illustrated is：Above example is merely to illustrate the implementation process and feature of the present invention, and unrestricted is sent out
Bright technical solution, although the present invention is described in detail with reference to above-described embodiment, those of ordinary skill in the art should
Work as understanding：Still can be to technical scheme is modified or replaced equivalently of the present invention, without departing from the spirit and scope of the present invention any
Modification or local replacement, are covered by the protection scope of the present invention.
Claims (6)
1. dangerous temperature monitoring method before a kind of combustion in situ igniting, this method include：A kind of dual probe monitoring device is provided, is pacified
On the outside of screen casing, underground is placed into screen casing, for monitoring downhole temperature；Wherein, the dual probe monitoring device includes two
A temp probe, one of probe is exposed to outer, actual temperature under monitoring well, another probe embedment is by simple metal or metal
In the cured metal derby of alloy.
2. according to the method described in claim 1, wherein, in the dual probe monitoring device, two temp probes can pass through line
Road is connected to ground displaying alarm；Alternatively, two temp probes can pass through connection to temperature sensor, temperature difference sensing
Device further can connect warning device by cable.
It is 3. described to be closed by simple metal or metal in the dual probe monitoring device according to the method described in claim 1, wherein
The cured metal derby of gold is placed in high temperature resistant metal housing.
4. according to the method described in claim 3, wherein, in the dual probe monitoring device, the high temperature resistant metal housing is
Resist the metal shell of 1000 DEG C of temperatures above.
It is 5. described to be closed by simple metal or metal in the dual probe monitoring device according to the method described in claim 1, wherein
The cured metal derby of gold is the metal derby of 250-300 DEG C or 400-600 DEG C of fusion temperature.
6. according to the method described in claim 1, wherein, set the temperature difference that two temperature is popped one's head in increase to 50-150 DEG C, can sentence
Determine downhole temperature exception, ground alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711129395.5A CN108035707B (en) | 2017-11-15 | 2017-11-15 | Method for monitoring dangerous temperature before ignition in-situ combustion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711129395.5A CN108035707B (en) | 2017-11-15 | 2017-11-15 | Method for monitoring dangerous temperature before ignition in-situ combustion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108035707A true CN108035707A (en) | 2018-05-15 |
| CN108035707B CN108035707B (en) | 2021-05-28 |
Family
ID=62093738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711129395.5A Active CN108035707B (en) | 2017-11-15 | 2017-11-15 | Method for monitoring dangerous temperature before ignition in-situ combustion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108035707B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08271347A (en) * | 1995-02-01 | 1996-10-18 | Shinagawa Refract Co Ltd | Molten metal temperature sensor |
| CN200999604Y (en) * | 2006-10-26 | 2008-01-02 | 新疆石油管理局钻井工艺研究院 | Automatically reopening type air drilling down-hole extingiushment joint |
| CN102538462A (en) * | 2012-01-16 | 2012-07-04 | 陕西理工学院 | Experiment electric furnace with accurate temperature control |
| CN103336022A (en) * | 2013-06-14 | 2013-10-02 | 沈阳创达技术交易市场有限公司 | Melting-point testing device |
| CN203746994U (en) * | 2014-03-07 | 2014-07-30 | 清华大学 | Battery inner temperature measurement device |
| CN103966377A (en) * | 2014-05-27 | 2014-08-06 | 内蒙古科技大学 | Blast-furnace temperature on-line detection and acquisition system and on-line detection method |
| CN105241065A (en) * | 2015-11-12 | 2016-01-13 | 镇江市清安电器有限公司 | Fire-prevention electric heater |
| KR101656491B1 (en) * | 2015-06-19 | 2016-09-09 | 윤종근 | Apparatus for remote controlling in sprinkler |
| CN106676321A (en) * | 2016-12-07 | 2017-05-17 | 北京态金科技有限公司 | Low-melting-point metal and preparation method and application thereof |
| CN206236611U (en) * | 2016-11-24 | 2017-06-09 | 佛山通宝华盛电热控制器有限公司 | Dual probe pressure type manual reset temperature limiter |
| CN206412346U (en) * | 2016-12-07 | 2017-08-15 | 北京态金科技有限公司 | Cycle cooling system |
| CN107300425A (en) * | 2017-07-06 | 2017-10-27 | 北京大学 | A kind of temperature sensor and thermometry |
-
2017
- 2017-11-15 CN CN201711129395.5A patent/CN108035707B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08271347A (en) * | 1995-02-01 | 1996-10-18 | Shinagawa Refract Co Ltd | Molten metal temperature sensor |
| CN200999604Y (en) * | 2006-10-26 | 2008-01-02 | 新疆石油管理局钻井工艺研究院 | Automatically reopening type air drilling down-hole extingiushment joint |
| CN102538462A (en) * | 2012-01-16 | 2012-07-04 | 陕西理工学院 | Experiment electric furnace with accurate temperature control |
| CN103336022A (en) * | 2013-06-14 | 2013-10-02 | 沈阳创达技术交易市场有限公司 | Melting-point testing device |
| CN203746994U (en) * | 2014-03-07 | 2014-07-30 | 清华大学 | Battery inner temperature measurement device |
| CN103966377A (en) * | 2014-05-27 | 2014-08-06 | 内蒙古科技大学 | Blast-furnace temperature on-line detection and acquisition system and on-line detection method |
| KR101656491B1 (en) * | 2015-06-19 | 2016-09-09 | 윤종근 | Apparatus for remote controlling in sprinkler |
| CN105241065A (en) * | 2015-11-12 | 2016-01-13 | 镇江市清安电器有限公司 | Fire-prevention electric heater |
| CN206236611U (en) * | 2016-11-24 | 2017-06-09 | 佛山通宝华盛电热控制器有限公司 | Dual probe pressure type manual reset temperature limiter |
| CN106676321A (en) * | 2016-12-07 | 2017-05-17 | 北京态金科技有限公司 | Low-melting-point metal and preparation method and application thereof |
| CN206412346U (en) * | 2016-12-07 | 2017-08-15 | 北京态金科技有限公司 | Cycle cooling system |
| CN107300425A (en) * | 2017-07-06 | 2017-10-27 | 北京大学 | A kind of temperature sensor and thermometry |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108035707B (en) | 2021-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2953571C (en) | Methods for multi-zone fracture stimulation of a well | |
| CN103261582B (en) | The method for automatically controlling and positioning for autonomous downhole tool | |
| US3357490A (en) | Apparatus for automatically introducing coolant into and shutting down wells | |
| CA2684600C (en) | Producer well plugging for in situ combustion processes | |
| CN206386111U (en) | A kind of experimental provision for testing cement sheath and sleeve pipe cementing strength | |
| CN107701163B (en) | A kind of thermal agitation cooperates the secondary permeability improvement device in coal seam and method with drilling gas explosion | |
| CN104963669A (en) | Heavy oil thermal recovery method and well pattern thereof | |
| US2000381A (en) | Means for extinguishing oil well fires | |
| CN104196509A (en) | Fireflooding moving type high-temperature electric ignition process pipe | |
| CN108035707A (en) | Dangerous temperature monitoring method before a kind of combustion in situ igniting | |
| CN205743888U (en) | A kind of Mobile underground electric ignition and the same examining system of optical fiber temperature and pressure | |
| US3343598A (en) | Protection of production well equipment in in situ combustion operation | |
| CN207568592U (en) | Abnormal temperature monitoring device before a kind of combustion in situ igniting | |
| CN207795209U (en) | A kind of preceding dangerous high temperature monitoring device of combustion in situ igniting | |
| CA2834927C (en) | Cutting device, safety valve, method and uses for severing a pipe-string-related object in a safety valve for a well | |
| US20100200223A1 (en) | Method for heating a hydrocarbons reservoir | |
| CN111140196B (en) | Petroleum pipe repairing method | |
| CN111119975B (en) | Section protection device and method for loose top coal at fault during stoping and withdrawing of fully mechanized caving face | |
| CN108150136B (en) | In-situ combustion well bore combustion preventing fire extinguishing tail pipe and application thereof | |
| CN105464619A (en) | Completion method for igniting well of in-situ combustion | |
| CN106401537A (en) | Well completion pipe string of underground gas storage well and well completion method | |
| CN204283390U (en) | The portable high-temperature electric igniting process tubular column of a kind of fireflood | |
| CN106761690A (en) | For the intelligent test well of gaslift processing simulation | |
| CN207212328U (en) | For coal mine gob temperature sensing with brill thermometric drilling tool | |
| CN108131116A (en) | A kind of anti-pit shaft burning high temperature resistance self-extinguishing stick of combustion in situ and its application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |