CN104453820A - Movable type deep well burning oil layer ignition tubular column and ignition method thereof - Google Patents
Movable type deep well burning oil layer ignition tubular column and ignition method thereof Download PDFInfo
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- CN104453820A CN104453820A CN201410643045.0A CN201410643045A CN104453820A CN 104453820 A CN104453820 A CN 104453820A CN 201410643045 A CN201410643045 A CN 201410643045A CN 104453820 A CN104453820 A CN 104453820A
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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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
- E21B43/243—Combustion in situ
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses a movable type deep well burning oil layer ignition tubular column and an ignition method of the tubular column. The ignition method comprises the steps that an oil tube, a high-temperature heat-insulating tube and a high-temperature screen tube which are connected together are sent to a casing tube; a continuous tube electric igniter and a continuous tube type optical fiber ultra-high-temperature measuring cable are sent to the oil tube; the continuous tube electric igniter and the continuous tube type optical fiber ultra-high-temperature measuring cable are connected to respective ground control systems respectively; air section plugs with the number on schedule are injected into the oil tube and annular space formed between the oil tube and the casing tube; the ground control system of the continuous tube electric igniter and the ground control system of the continuous tube type optical fiber ultra-high-temperature measuring cable are started respectively, and air in the oil tube is heated; the air in the oil tube enters the casing tube through a high-temperature screen tube, and heating ignition is carried out on the oil layer. The movable type deep well burning oil layer ignition tubular column can protect an ignition device and an underground tubular column, and the ignition success rate is improved.
Description
Technical field
The invention relates to combustion in situ oil recovery technique, particularly about the portable deep-well combustion in situ igniting tubing string of one and ignition method thereof.
Background technology
Combustion in situ by burning Injection Well, air or oxygen is injected in oil reservoir, it is made to react with heavy component in a part of oil reservoir in oil reservoir, crude oil is displaced ground by the heat utilizing reaction to produce and reaction end gas, and the continuable key of this process implementation is oil layer ignition.At present, the sparking mode adopted mainly contains spontaneous ignition, chemic ignition and electric ignition three kinds of modes, and wherein electric ignition is the maximum a kind of sparking mode of application, and which has supporting technology maturation, be easy to realize IGNITION CONTROL, feature that ignition success rate is high.
Existing electric ignition technology, owing to being limited to the restriction of firing cable, igniter, igniter rountrip condition of compatibility and equipment, the igniting of General Requirements combustion in situ the well depth <1000m of gas injection well, the oil well of pressure <10MPa, and which greatly limits the accommodation that fireflood reservoir exploitation difficulty employs oil reservoir.
According to entering the feature that can technique be different and reuse under electric igniter, electric igniter can be divided into cluster igniter and retrievable igniter.Cluster igniter utilizes tubing string will to enter target zone position under igniter, and its power cable is bonded on oil pipe is connected with ground control cabinet, air injection pipe note did not trip out in the whole production cycle, thus after causing the production cycle to terminate, portable electric igniter and power cable burn, can not recycle, cause individual well expense to increase.Further, in ignition process, monitoring cable will enter from sleeve pipe, and rountrip risk is comparatively large, can not realize the monitoring in overall process, complete section face.
Chinese patent 201110326453.X discloses a kind of retrievable electric igniter, this retrievable igniter achieves to be recycled, but due to this igniter and power cable not isometrical, in whole gas injection cycle, during well head rountrip, difficulty is comparatively large, and does not have complete temperature monitoring system.Chinese patent 201320112187.5 discloses the electric ignition of a kind of combustion in situ rolling-up type and monitoring system, the igniter wherein used is that portable electric igniter can reuse, but be then utilize to be achieved with the single thermocouple monitoring system of the independence entered under tubing string to the monitoring of igniter outlet air temperature, with entering under tubing string, temperature monitoring system site construction technology is complicated, construction cost is high, and because tubing string is fixed, the well temperature section plane test in oil reservoir longitudinal direction can not be realized in ignition process.
Summary of the invention
The invention provides a kind of portable deep-well combustion in situ igniting tubing string and ignition method thereof, so that ignition installation and down-hole string can be protected, can ignition success rate be improved again; realization igniting simultaneously removes smoothly with monitoring equipment; ensure construction safety, improve the ignition results of deep-well, reduce cost of investment.
To achieve these goals, the invention provides a kind of portable deep-well combustion in situ igniting tubing string, described portable deep-well combustion in situ igniting tubing string comprises: sleeve pipe, oil pipe, high temperature insulating pipe, high temperature screen casing, plug, continuous-tube electric igniter and continuous pipe type optical fiber superhigh temperature cable for measuring temperature;
Described sleeve pipe is deeply to oil reservoir; Described oil pipe is arranged in described sleeve pipe, makes to form annular space between described oil pipe and described sleeve pipe; Described high temperature insulating pipe is connected to the lower end of described oil pipe; Described high temperature screen casing is connected to the lower end of described high temperature insulating pipe; Described plug shutoff is in the lower end of described high temperature screen casing;
Described continuous-tube electric igniter and continuous pipe type optical fiber superhigh temperature cable for measuring temperature are lowered in how many heat pipes respectively by ground, and described continuous-tube electric igniter and continuous pipe type optical fiber superhigh temperature cable for measuring temperature are connected to respective ground control system.
In one embodiment, the diameter of described sleeve pipe is: φ=177.80mm.
In one embodiment, the diameter of described high temperature screen casing is: φ=114mm.
In one embodiment, the diameter of described high temperature insulating pipe is: φ=139.7mm.
In one embodiment, the diameter of described oil pipe is: φ=88.9mm.
To achieve these goals, present invention also offers a kind of ignition method of portable deep-well combustion in situ igniting tubing string, described ignition method comprises:
To link together in sleeve pipe described in described oil pipe, high temperature insulating pipe and high temperature screen insertion;
To enter in described oil pipe under described continuous-tube electric igniter and continuous pipe type optical fiber superhigh temperature cable for measuring temperature;
Described continuous-tube electric igniter and continuous pipe type optical fiber superhigh temperature cable for measuring temperature are connected respective ground control system respectively;
The air slug of scheduled volume is injected in the annular space formed in described oil pipe and between described oil pipe and described sleeve pipe;
Start the ground control system of described continuous-tube electric igniter and continuous pipe type optical fiber superhigh temperature cable for measuring temperature respectively, the air in described oil pipe is heated;
Air in described oil pipe enters described sleeve pipe by described high temperature screen casing, carries out heating igniting to oil reservoir.
In one embodiment, after completing oil layer ignition, cut off the power supply of described continuous-tube electric igniter, then described continuous-tube electric igniter is tripped out well head.
In one embodiment, reach default temperature monitoring week after date, described continuous pipe type optical fiber superhigh temperature cable for measuring temperature is tripped out well head.
The beneficial effect of the embodiment of the present invention is, the present invention can protect ignition installation and down-hole string, can improve ignition success rate again; can realize lighting a fire and the removing smoothly of monitoring equipment simultaneously; ensure construction safety, improve the ignition results of deep-well, reduce cost of investment.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of the portable deep-well combustion in situ igniting tubing string of the embodiment of the present invention;
Fig. 2 is the ignition method flow chart of the portable deep-well combustion in situ igniting tubing string of the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, the invention provides a kind of portable deep-well combustion in situ igniting tubing string, this portable deep-well combustion in situ igniting tubing string comprises: sleeve pipe 1, oil pipe 2, high temperature insulating pipe 5, high temperature screen casing 6, plug 7, continuous-tube electric igniter 4 and continuous pipe type optical fiber superhigh temperature cable for measuring temperature 3.
Sleeve pipe 1 is deeply to oil reservoir.Oil pipe 2 is arranged in sleeve pipe 1, makes to form annular space between oil pipe 2 and sleeve pipe 1.High temperature insulating pipe 5 is connected to the lower end of oil pipe 2, and high temperature screen casing 5 is connected to the lower end of high temperature insulating pipe 5, and plug 7 shutoff is in the lower end of high temperature screen casing 5.
Continuous-tube electric igniter 4 and continuous pipe type optical fiber superhigh temperature cable for measuring temperature 3 are lowered in oil pipe 2 respectively by ground, and continuous-tube electric igniter 4 and continuous pipe type optical fiber superhigh temperature cable for measuring temperature 3 are connected to respective ground control system (not shown).
In one embodiment, bottom continuous-tube electric igniter 4 higher than oil reservoir.
Below in conjunction with an embodiment, portable deep-well combustion in situ igniting tubing string of the present invention is described, in the present embodiment, dark 2300m, core intersection 20m, casing diameter φ=177.80mm in oil reservoir, plug back total depth (PBTD) is 2500m.
In one embodiment, the diameter of high temperature screen casing is: φ=114mm, degree of depth 2290m.The degree of depth of plug is 2300m.
In one embodiment, the diameter of high temperature insulating pipe is: φ=139.7mm, and length is 150m.
In one embodiment, the diameter of oil pipe is: φ=88.9mm, and length is 2140m.
Portable deep-well combustion in situ igniting tubing string of the present invention is mainly by continuous-tube electric igniter and the fit applications of continuous pipe type optical fiber superhigh temperature cable for measuring temperature and the optimal design of continuous-tube electric ignition tubing string, and the electric ignition achieving deep-well (1000 ~ 2500 meters) is ignited the combustion in situ method of oil reservoir.By igniting overall process, complete section face, holocyclic some thermal monitoring and igniter fire state modulator; ignition installation and down-hole string can be protected; ignition success rate can be improved again; can realize lighting a fire and the removing smoothly of monitoring equipment simultaneously; ensure construction safety; improve the ignition results of deep-well, reduce cost of investment.
As shown in Figure 2, the invention provides a kind of ignition method of portable deep-well combustion in situ igniting tubing string, be applied to portable deep-well combustion in situ igniting tubing string shown in Fig. 1, described ignition method comprises:
S201: in the oil pipe that will link together, high temperature insulating pipe and high temperature screen insertion sleeve pipe.
S202: enter under continuous-tube electric igniter and continuous pipe type optical fiber superhigh temperature cable for measuring temperature in oil pipe.
S203: continuous-tube electric igniter and continuous pipe type optical fiber superhigh temperature cable for measuring temperature are connected respective ground control system respectively.
S204: the air slug injecting scheduled volume in the annular space formed in oil pipe and between oil pipe and sleeve pipe.
S205: the ground control system starting continuous-tube electric igniter and continuous pipe type optical fiber superhigh temperature cable for measuring temperature respectively, heats the air in oil pipe.
S206: the air in oil pipe enters described sleeve pipe by high temperature screen casing, carries out heating igniting to oil reservoir.
Flow process is known as shown in Figure 1, and first the present invention will link together in oil pipe, high temperature insulating pipe and high temperature screen insertion sleeve pipe, and enters under continuous-tube electric igniter and continuous pipe type optical fiber superhigh temperature cable for measuring temperature in oil pipe.Then the air slug of scheduled volume is injected in the annular space formed in oil pipe and between oil pipe and sleeve pipe, start the ground control system of continuous-tube electric igniter and continuous pipe type optical fiber superhigh temperature cable for measuring temperature, air in oil pipe is heated, make the air in oil pipe enter described sleeve pipe by high temperature screen casing, heating igniting is carried out to oil reservoir.Ignition method of the present invention, can protect ignition installation and down-hole string, can improve ignition success rate again, can realize lighting a fire and the removing smoothly of monitoring equipment simultaneously, ensure construction safety, improve the ignition results of deep-well, reduce cost of investment.
In one embodiment, after completing oil layer ignition, need the power supply cutting off continuous-tube electric igniter, then continuous-tube electric igniter is tripped out well head.
In one embodiment, reach default temperature monitoring week after date, need continuous pipe type optical fiber superhigh temperature cable for measuring temperature to trip out well head.
The enforcement that S201 implements needs after completing sleeve pipe and going into the well, and when entering sleeve pipe under in stratum, sleeve pipe needs deeply to oil reservoir.
When S202 specifically implements, in one embodiment, the degree of depth entered under continuous-tube electric igniter in oil pipe is 2285m, and under continuous pipe type optical fiber superhigh temperature cable for measuring temperature, the degree of depth entered in oil pipe is 2300m, and the present invention is not as limit.
In one embodiment, dark 2300m, core intersection 20m, casing diameter φ=177.80mm in oil reservoir, plug back total depth (PBTD) is 2500m, and the present invention is not as limit.
In one embodiment, the diameter of high temperature screen casing is: φ=114mm, degree of depth 2290m.The degree of depth of plug is 2300m, and the present invention is not as limit.
In one embodiment, the diameter of high temperature insulating pipe is: φ=139.7mm, and length is 150m, and the present invention is not as limit.
In one embodiment, the diameter of oil pipe is: φ=88.9mm, and length is 2140m, and the present invention is not as limit.
Ignition method of the present invention, by continuous-tube electric igniter and the fit applications of continuous pipe type optical fiber superhigh temperature cable for measuring temperature and the optimal design of continuous-tube electric ignition tubing string, the electric ignition achieving deep-well (1000 ~ 2500 meters) is ignited the combustion in situ method of oil reservoir.By igniting overall process, complete section face, holocyclic some thermal monitoring and igniter fire state modulator; ignition installation and down-hole string can be protected; ignition success rate can be improved again; can realize lighting a fire and the removing smoothly of monitoring equipment simultaneously; ensure construction safety; improve the ignition results of deep-well, reduce cost of investment.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Apply specific embodiment in the present invention to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (8)
1. a portable deep-well combustion in situ igniting tubing string, it is characterized in that, described portable deep-well combustion in situ igniting tubing string comprises: sleeve pipe, oil pipe, high temperature insulating pipe, high temperature screen casing, plug, continuous-tube electric igniter and continuous pipe type optical fiber superhigh temperature cable for measuring temperature;
Described sleeve pipe is deeply to oil reservoir; Described oil pipe is arranged in described sleeve pipe, makes to form annular space between described oil pipe and described sleeve pipe; Described high temperature insulating pipe is connected to the lower end of described oil pipe; Described high temperature screen casing is connected to the lower end of described high temperature insulating pipe; Described plug shutoff is in the lower end of described high temperature screen casing;
Described continuous-tube electric igniter and continuous pipe type optical fiber superhigh temperature cable for measuring temperature are lowered in described oil pipe respectively by ground, and described continuous-tube electric igniter and continuous pipe type optical fiber superhigh temperature cable for measuring temperature are connected to respective ground control system.
2. portable deep-well combustion in situ igniting tubing string according to claim 1, it is characterized in that, the diameter of described sleeve pipe is: φ=177.80mm.
3. portable deep-well combustion in situ igniting tubing string according to claim 1, it is characterized in that, the diameter of described high temperature screen casing is: φ=114mm.
4. portable deep-well combustion in situ igniting tubing string according to claim 1, it is characterized in that, the diameter of described high temperature insulating pipe is: φ=139.7mm.
5. portable deep-well combustion in situ igniting tubing string according to claim 1, it is characterized in that, the diameter of described oil pipe is: φ=88.9mm.
6. an ignition method for portable deep-well combustion in situ igniting tubing string, be applied to portable deep-well combustion in situ igniting tubing string according to claim 1, it is characterized in that, described ignition method comprises:
To link together in sleeve pipe described in described oil pipe, high temperature insulating pipe and high temperature screen insertion;
To enter in described oil pipe under described continuous-tube electric igniter and continuous pipe type optical fiber superhigh temperature cable for measuring temperature;
Described continuous-tube electric igniter and continuous pipe type optical fiber superhigh temperature cable for measuring temperature are connected respective ground control system respectively;
The air slug of scheduled volume is injected in the annular space formed in described oil pipe and between described oil pipe and described sleeve pipe;
Start the ground control system of described continuous-tube electric igniter and continuous pipe type optical fiber superhigh temperature cable for measuring temperature respectively, the air in described oil pipe is heated;
Air in described oil pipe enters described sleeve pipe by described high temperature screen casing, carries out heating igniting to oil reservoir.
7. ignition method according to claim 6, is characterized in that, after completing oil layer ignition, cuts off the power supply of described continuous-tube electric igniter, then described continuous-tube electric igniter is tripped out well head.
8. ignition method according to claim 7, is characterized in that, reaches default temperature monitoring week after date, described continuous pipe type optical fiber superhigh temperature cable for measuring temperature is tripped out well head.
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| CN201410643045.0A CN104453820B (en) | 2014-11-06 | 2014-11-06 | A kind of portable igniting of deep-well combustion in situ tubing string and its ignition method |
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| CN201410643045.0A CN104453820B (en) | 2014-11-06 | 2014-11-06 | A kind of portable igniting of deep-well combustion in situ tubing string and its ignition method |
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| CN104453820B CN104453820B (en) | 2017-07-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700462A (en) * | 2020-05-21 | 2021-11-26 | 中国石油天然气股份有限公司 | Fire flooding oil production device and method for thick oil horizontal well |
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| CN104453820B (en) | 2017-07-07 |
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