CN108266169A - Method and device for detecting oil reservoir exploitation degree of horizontal section - Google Patents
Method and device for detecting oil reservoir exploitation degree of horizontal section Download PDFInfo
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- CN108266169A CN108266169A CN201611264019.2A CN201611264019A CN108266169A CN 108266169 A CN108266169 A CN 108266169A CN 201611264019 A CN201611264019 A CN 201611264019A CN 108266169 A CN108266169 A CN 108266169A
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000001514 detection method Methods 0.000 claims abstract description 31
- 238000010793 Steam injection (oil industry) Methods 0.000 claims description 62
- 238000009826 distribution Methods 0.000 claims description 45
- 238000011161 development Methods 0.000 claims description 37
- 238000012360 testing method Methods 0.000 claims description 27
- 238000011897 real-time detection Methods 0.000 claims description 3
- 238000010796 Steam-assisted gravity drainage Methods 0.000 abstract description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 238000005259 measurement Methods 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 119
- 238000012546 transfer Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000012544 monitoring process Methods 0.000 description 7
- 229920006395 saturated elastomer Polymers 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 235000020681 well water Nutrition 0.000 description 3
- 239000002349 well water Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000004069 differentiation Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
Classifications
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- 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
- 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
- E21B43/2406—Steam assisted gravity drainage [SAGD]
-
- 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
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- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Pipeline Systems (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention discloses a method and a device for detecting the oil reservoir exploitation degree of a horizontal segment. Wherein, the method comprises the following steps: determining a first temperature of a pipe wall of a production well at a plurality of preset nodes under the condition that a horizontal segment oil deposit does not serve; detecting a second temperature of the well oil reservoir of the production well at a plurality of preset nodes; comparing the first temperature with the second temperature, and determining the detection results of the horizontal segment oil deposit at a plurality of preset nodes, wherein the detection results are used for representing whether the horizontal segment oil deposit is used at the plurality of preset nodes; and determining the exploitation degree of the horizontal-segment oil reservoir according to the detection results of the horizontal-segment oil reservoir at a plurality of preset nodes. The invention solves the technical problem that the measurement result of the usage degree of the SAGD horizontal segment is inaccurate in the prior art.
Description
Technical field
The present invention relates to oil field development field, in particular to a kind of detection method of horizontal segment oil reservoir development degree
And device.
Background technology
SAGD technologies are a mature technology of super heavy oil development in the world, represent super heavy oil development highest level,
Ultimate recovery is the effective means of current super heavy oil development up to 50%~70%.It is at most double water that SAGD is applied at present
Horizontal well SAGD, two horizontal well forward direction parallel distributions, upper horizontal well are steam injection well, and lower horizontal well is producing well.SAGD productions point
For two big stages --- startup and production phase, in startup stage, upper and lower horizontal well (steam injection well and producing well, abbreviation injection-production well)
High-temperature steam cycle preheating is injected simultaneously, establishes waterpower between injection-production well, thermal communication, simultaneously because steam overlap,
Vapor chamber is formed above steam injection well, is transferred to the production phase later；In the production phase, high-quality steam is injected from steam injection well, with
Cold oil area contacts, and discharges vaporization latent heat crude oil, and the viscosity of crude heated reduces and steam condensate (SC) is made together in gravity
It flows downward under, is produced from horizontal production well, vapor chamber persistently extends in process of production, occupies output crude oil space.
Due to the horizontal segment length (200~800m) of SAGD horizontal wells, influenced greatly, simultaneously by anisotropism along horizontal segment oil reservoir
Gravitational differentiation of the steam in the wellbore and in oil reservoir so that have differences, can cause along horizontal segment direction steam absorbing amount size
Connecting degree difference between upper and lower horizontal well, directly influences the development degree of horizontal segment oil reservoir, section is moved to improve the standard
With degree, it is necessary to which it is small or do not inhale the horizontal segment of vapour clearly to tell steam absorbing amount, to take measures, improves development degree.
The determining method of SAGD horizontal segments development degree mainly has following three kinds of methods at present.First, in horizontal segment tripping in temperature
Monitoring system is spent, the producing status of horizontal segment oil reservoir is determined by the variation of the horizontal segment temperature of monitoring.Current most common prison
Examining system is thermocouple.Thermocouple is single-point, discontinuous monitoring, and horizontal segment tripping in 6-10 temperature measuring points, spacing is big, and fine degree is not
It is enough, while the downhole temperature for relying solely on monitoring is difficult to judge to employ situation；Although fibre system can realize continuous, real-time prison
It surveys, but fiber lifetime is short, needs replacing within general 1~2 year, it is of high cost, at the scene using not universal.Second is that observe well using SAGD
Temperature change determines that producing well horizontal segment oil reservoir employs situation.Arrange that observation well is monitoring producing well vapor chamber hair along net horizontal section
Educate a kind of most common mode, the observation well of arrangement is straight well, be distributed in the toe-ends of SAGD producing well horizontal segments, middle-end with
End is 10~20m apart from producing well distance, distant, since vapour chamber expansion rate is slow, vapor chamber ability after general 2~3 years
Observation well location can be expanded to put, cause observation well temperature change, real-time is poor.Third, using four-dimensional micro-seismic monitoring, use
Time lapse seismic monitoring SAGD vapor chamber development characteristics are relatively broad in foreign applications, and which can reflect large area oil reservoir
Range thermal distribution situation, this mode is of high cost, can only once measure the horizontal segment development degree in certain a period of time, in real time
Property is also poor.
For SAGD horizontal segments development degree in the prior art measurement result it is inaccurate the problem of, at present not yet propose have
The solution of effect.
Invention content
An embodiment of the present invention provides a kind of detection methods and device of horizontal segment oil reservoir development degree, existing at least to solve
There is the technical issues of measurement result of SAGD horizontal segments development degree in technology is inaccurate.
One side according to embodiments of the present invention provides a kind of detection method of horizontal segment oil reservoir development degree, packet
It includes：It determines in the case where horizontal segment oil reservoir is not employed, the first temperature of the tube wall of producing well at preset multiple nodes；Inspection
Survey the second temperature at the preset multiple nodes of well oil plant of producing well；The first temperature and second temperature are compared, determines water
Testing result of the flat section oil reservoir at preset multiple nodes, wherein, testing result is for Representation Level section oil reservoir preset
Whether employed at multiple nodes；Horizontal segment oil reservoir is determined according to testing result of the horizontal segment oil reservoir at preset multiple nodes
Development degree.
Further, the Temperature Distribution in steam injection well horizontal segment annular space is obtained；According to the temperature in steam injection well horizontal segment annular space
Degree distribution determines first temperature of the tube wall of producing well at preset multiple nodes.
Further, the Temperature Distribution of the tube wall of producing well is obtained according to the Temperature Distribution in steam injection well horizontal segment annular space；
First temperature of the tube wall of producing well at preset multiple nodes is determined according to the Temperature Distribution of the tube wall of producing well.
Further, second temperature of the oil reservoir at preset multiple nodes in producing well is detected in real time.
Further, if preset multiple node second temperatures are more than the first temperature, it is determined that horizontal segment oil reservoir is employed；
If second temperature is less than or equal to second temperature, it is determined that horizontal segment oil reservoir is not employed.
Another aspect according to embodiments of the present invention additionally provides a kind of detection device of horizontal segment oil reservoir development degree,
Including：First determining module, for determining in the case where horizontal segment oil reservoir is not employed, the tube wall of producing well is preset multiple
The first temperature at node；Detection module, for detecting the second temperature at the preset multiple nodes of the well oil of producing well plant
Degree；Comparing module for comparing the first temperature and second temperature, determines detection of the horizontal segment oil reservoir at preset multiple nodes
As a result, wherein, whether testing result is employed for Representation Level section oil reservoir at preset multiple nodes；Second determining module,
For determining the development degree of horizontal segment oil reservoir according to testing result of the horizontal segment oil reservoir at preset multiple nodes.
Further, the first determining module includes：First acquisition submodule, for obtaining in steam injection well horizontal segment annular space
Temperature Distribution；First determination sub-module, for determining the tube wall of producing well according to the Temperature Distribution in steam injection well horizontal segment annular space
The first temperature at preset multiple nodes.
Further, the first determination sub-module includes：Acquiring unit, for according to the temperature in steam injection well horizontal segment annular space
The Temperature Distribution of the tube wall of distributed acquisition producing well；Determination unit determines to give birth to for the Temperature Distribution of the tube wall according to producing well
Produce first temperature of the tube wall of well at preset multiple nodes.
Further, detection module includes：Real-time detection sub-module, for detecting in producing well oil reservoir in real time preset
Second temperature at multiple nodes.
Further, comparing module includes：First determining module, if be more than for preset multiple node second temperatures
First temperature, it is determined that horizontal segment oil reservoir is employed；Second determining module, if being less than or equal to the second temperature for second temperature
Degree, it is determined that horizontal segment oil reservoir is not employed.
In embodiments of the present invention, determine that, in the case where horizontal segment oil reservoir is not employed, the tube wall of producing well is preset
The first temperature at multiple nodes detects the second temperature at the preset multiple nodes of well oil plant of producing well, by first
Temperature is compared with second temperature, to determine testing result of the horizontal segment oil reservoir at preset multiple nodes, according to level
Testing result of the section oil reservoir at preset multiple nodes determines the development degree of horizontal segment oil reservoir.Said program passes through true respectively
Be scheduled on the horizontal segment oil reservoir at multiple preset nodes employs situation, to determine the development degree of entire horizontal segment oil reservoir, into
One step, determine horizontal segment oil reservoir do not employ in the case of producing well in oil reservoir limiting temperature, and pass through actually detected arrive
The temperature of producing well well oil layer be compared with limiting temperature, so that it is determined that the horizontal segment oil at multiple preset nodes
That hides employs situation, and program timeliness is strong, at low cost without special installation, and can ensure the accuracy of detection, so as to solve
Determined SAGD horizontal segments development degree in the prior art measurement result it is inaccurate the technical issues of.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and forms the part of the application, this hair
Bright illustrative embodiments and their description do not constitute improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the flow chart of the detection method of horizontal segment oil reservoir development degree according to embodiments of the present invention；And
Fig. 2 is the schematic diagram of the detection device of horizontal segment oil reservoir development degree according to embodiments of the present invention.
Specific embodiment
In order to which those skilled in the art is made to more fully understand the present invention program, below in conjunction in the embodiment of the present invention
The technical solution in the embodiment of the present invention is clearly and completely described in attached drawing, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's all other embodiments obtained without making creative work should all belong to the model that the present invention protects
It encloses.
It should be noted that term " first " in description and claims of this specification and above-mentioned attached drawing, "
Two " etc. be the object for distinguishing similar, and specific sequence or precedence are described without being used for.It should be appreciated that it uses in this way
Data can be interchanged in the appropriate case, so as to the embodiment of the present invention described herein can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that cover
Cover it is non-exclusive include, be not necessarily limited to for example, containing the process of series of steps or unit, method, system, product or equipment
Those steps or unit clearly listed, but may include not listing clearly or for these processes, method, product
Or the intrinsic other steps of equipment or unit.
Embodiment 1
According to embodiments of the present invention, a kind of embodiment of the detection method of horizontal segment oil reservoir development degree is provided, is needed
Illustrate, step shown in the flowchart of the accompanying drawings can be in the computer system of such as a group of computer-executable instructions
It performs, although also, show logical order in flow charts, it in some cases, can be to be different from herein suitable
Sequence performs shown or described step.
Fig. 1 is the flow chart of the detection method of horizontal segment oil reservoir development degree according to embodiments of the present invention, such as Fig. 1 institutes
Show, this method comprises the following steps：
Step S102 determines that in the case where horizontal segment oil reservoir is not employed the tube wall of producing well is in preset multiple nodes
First temperature at place.
Specifically, above-mentioned preset multiple nodes can be the sampling node set for detection level section oil reservoir,
In a kind of optional embodiment, steam injection well and producing well can determine section corresponding with preset multiple nodes in horizontal segment
Point.For example, usually producing well horizontal segment is 500m to 1000m, in a kind of optional embodiment, can set at 5m
One node determines the first temperature.
Herein it should be noted that since above-mentioned first temperature is to be obtained in the case where not employed in horizontal segment oil reservoir
, therefore above-mentioned first temperature is limiting temperature, i.e., the maximum temperature that can reach in the case where horizontal segment oil reservoir is not employed
Degree.
Step S104 detects the second temperature at the preset multiple nodes of well oil plant of producing well.
Specifically, in SAGD (Steam Assisted Gravity Drainage) oil recovery technique, above-mentioned producing well
Well oil hides the crude oil and the mixture of steam condensate (SC) to be heated by high-quality steam, therefore the well that second temperature is producing well
Interior reservoir temperature is also the mixture of the crude oil and steam condensate (SC) heated by high-quality steam.
Step S106 compares the first temperature and second temperature, determines inspection of the horizontal segment oil reservoir at preset multiple nodes
It surveys as a result, wherein, whether testing result is employed for Representation Level section oil reservoir at preset multiple nodes.
If herein it should be noted that being connected at some node between steam injection well and producing well, between two wells
It conducts heat at the node for thermal convection current, corresponding two well casings wall temperature is suitable at the node；If between steam injection well and producing well
It is not connected at some node, then corresponding two well shaft is heat transfer by heat conduction at the node, corresponding producing well at the node
Temperature is less than steam injection well casing wall temperature；And it is connected at some node between steam injection well and producing well, oil at the node of the connection
Tibetan can just employ, it is assumed that oil reservoir is not employed in entire horizontal segment, then node can not be connected between steam injection well and producing well, only
For heat transfer, according to heat transfer theory, temperature is that production well water equals the limiting temperature that section oil reservoir is not employed at the tube wall of producing well.
Therefore, it can determine whether employed at multiple preset multiple nodes by the way that the first temperature is compared with second temperature.
Step S108 determines the dynamic of horizontal segment oil reservoir according to testing result of the horizontal segment oil reservoir at preset multiple nodes
Use degree.
In a kind of optional embodiment, if 200 nodes are preset in horizontal segment oil reservoir to be measured, if therein
The testing result of 140 nodes is employs, and the testing result of 60 nodes is does not employ, then the use rate of the horizontal segment oil reservoir is
70%.
From the foregoing, it will be observed that the above embodiments of the present application are determined in the case where horizontal segment oil reservoir is not employed, the tube wall of producing well
The first temperature at preset multiple nodes detects the second temperature at the preset multiple nodes of well oil plant of producing well
Degree, the first temperature is compared with second temperature, to determine testing result of the horizontal segment oil reservoir at preset multiple nodes,
The development degree of horizontal segment oil reservoir is determined according to testing result of the horizontal segment oil reservoir at preset multiple nodes.Said program leads to
Cross determine the horizontal segment oil reservoir at multiple preset nodes respectively employ situation, to determine employing for entire horizontal segment oil reservoir
Degree, further, determine horizontal segment oil reservoir do not employ in the case of producing well in oil reservoir limiting temperature, and pass through reality
The temperature of producing well well oil layer detected is compared with limiting temperature, so that it is determined that the water at multiple preset nodes
Flat section oil reservoir employs situation, and program timeliness is strong, at low cost without special installation, and can ensure the accuracy of detection,
So as to solve the technical issues of measurement result of SAGD horizontal segments development degree in the prior art is inaccurate.
Optionally, according to the above embodiments of the present application, step S102 is determined in the case where horizontal segment oil reservoir is not employed,
First temperature of the tube wall of producing well at preset multiple nodes, including：
Step S1021 obtains the Temperature Distribution in steam injection well horizontal segment annular space.
Specifically, the Temperature Distribution in above-mentioned steam injection well horizontal segment annular space is interior every for characterizing steam injection well horizontal segment annular space
Temperature at a preset node.
In a kind of optional embodiment, the temperature point in steam injection well horizontal segment annular space can be obtained by following scheme
Cloth.According to the law of conservation of momentum, the governing equation of steam drop gradient in the flat depot siding of steam injection well water, gross pressure gradient can be established
It is made of gravity gradient, friction gradient and acceleration gradient, i.e.,：
- dp=(pf+pa+pg)dz (1)
Wherein：The fricting resistance loss of Pf unit lengths；Pa acceleration pressure drop gradient is lost；Gravity draws in Pg unit lengths
The pressure loss risen.
1. the fricting resistance loss of unit length：
The coefficient of frictional resistance of fm-- moist steams (namely high-quality steam of steam injection well injection) fluid；ρ m-- wet steam flows
The density of body, kg/m；
The average speed of vm-- moist steam fluids, m/s；D-- pipeline equivalent diameters, m；
2. the pressure loss caused by gravity in unit length：
pg=ρmgsinθ (3)
The inclination angle of θ -- oil well, rad.
3. acceleration pressure drop gradient is lost：
A-- flow sections, m2；The mass flow of G-- moist steam fluids, kg/s；
So the pressure loss can be expressed as in pipeline：
And
P=ρ RT (7)
It obtains：
So：
Substitution obtains：
Arrangement obtains：
And the density of moist steam can integrate mass dryness fraction by the liquid water and saturated vapor of the inside and show：
ρm=(1-x) ρl+xρg (13)
Wherein：The density of ρ l-- water, kg/m3；The density of ρ g-- saturated vapors, kg/m3；X-- steam qualitys.
For the density of water generally with pressure change very little, the density of mainly water vapour is very big with pressure change.Saturated water steams
The density of vapour and the relationship of pressure can be obtained by the regression equation of preset saturated vapor density and pressure and temperature, can
To be expressed as：
ρg=f (p) (14),
Specifically, can as shown in Table 1, table one is the signal table of the regression equation of saturated vapor density and pressure.
Table one
So as to obtain：
ρm=(1-x) ρl+xf(p) (15)
Total expression formula is substituted into obtain：
In practical calculating, each section of Density Distribution can first be calculated, then the distribution of pressure is calculated：
ρm=(1-x) ρl+xρg (17)
Steam injection well initially injects steam pressure for P0, steam injecting temperature T0, according to the steam injection well horizontal segment pressure being calculated
Power Pi, it can be deduced that the Temperature Distribution Tii in steam injection well horizontal segment annular space.
Step S1023 determines the tube wall of producing well preset more according to the Temperature Distribution in steam injection well horizontal segment annular space
The first temperature at a node.
Specifically, typically the distance between steam injection well and producing well for 3m to 8m, therefore can by heat transfer theory,
After the Temperature Distribution in steam injection well horizontal segment annular space is got, determine that producing well closes first at preset multiple nodes
Temperature.
From the foregoing, it will be observed that the application above-mentioned steps are passed according to the Temperature Distribution obtained in steam injection well horizontal segment annular space by heat
Theory is led to determine first temperature of the tube wall of producing well at preset multiple nodes.
Optionally, according to the above embodiments of the present application, step S1023, according to the temperature in steam injection well horizontal segment annular space point
Cloth determines first temperature of the tube wall of producing well at preset multiple nodes, including：
Step S1025 obtains the Temperature Distribution of the tube wall of producing well according to the Temperature Distribution in steam injection well horizontal segment annular space.
Herein it should be noted that due to not connected with producing well in the impassive used time steam injection well of oil reservoir, steam injection well
It is only heat transfer so far with producing well, therefore can be passed according to the Temperature Distribution in steam injection well horizontal segment annular space by existing heat
Theory is led to obtain the Temperature Distribution of the tube wall of producing well.
In a kind of optional embodiment, according to steam pressure gradient in steam injection well horizontal segment and the gravity gradient of steam,
The density of the Relation acquisition steam injection well horizontal segment moist steam of friction gradient and acceleration gradient；Passed through according to the density of moist steam pre-
If saturated vapor density and the relationship of pressure determine that pressure in steam injection well shaft is distributed；And according in steam injection well shaft
Pressure distribution determines the Temperature Distribution in steam injection well horizontal segment annular space.For example, it can determine producing well in the following way
The Temperature Distribution of tube wall：
During steam injection well steam injection, horizontal well pit shaft radiates by heat transfer to oil reservoir, reservoir temperature raising, for
One section, can write out its heat transfer equation：
Temperature Distribution in radiation processes oil reservoir can be determined by equation below：
Can obtain heat dissipation heat flow density based on formula (19) and formula (20) is：
Wherein：
Tii --- temperature in steam injection well horizontal segment annular space, DEG C；Ri --- away from steam injection downhole i m oil reservoirs, m；
Tr --- the reservoir temperature apart from steam injection downhole i m, DEG C；λ e --- oil reservoir thermal conductivity, W/ (mK)；
A --- oil reservoir thermal diffusion coefficient, m2/s；
λ --- the time of 1 day, s；The number of days of t- heating, d.
Wherein：Doing series expansion can be expressed as：
(meet γ/t when the steam injection time is longer<0.01) after, when steam injection well steam injecting temperature is constant：
The steam injection well horizontal segment pipe inner ring air temperature degree Tii got according to step S1021 can obtain horizontal segment heat dissipation
Heat flow density is：
It is hereby achieved that temperature is distributed as in oil reservoir：
Since the oil reservoir outside horizontal well horizontal segment is the state that is mixed with rock, oil, water etc., oil reservoir thermal conductivity
λ e can be calculated by following formula：
Wherein, a, b, c, d, e are coefficient, and Sw is water saturation (decimal), and So is oil saturation (decimal), and φ is oil
Layer porosity (decimal), T are temperature (DEG C).The system numerical value that can be obtained by multiple regression：A=4.318, b=
4.883rd, c=0.474, d=0.987, e=0.0024.
Step S1027 determines the tube wall of producing well in preset multiple nodes according to the Temperature Distribution of the tube wall of producing well
First temperature at place.
Since the Temperature Distribution of the tube wall of producing well can determine the temperature of the tube wall of producing well at different nodes,
After the Temperature Distribution for the tube wall for getting producing well, the tube wall of the producing well at preset multiple nodes can be directly determined
The first temperature.
Optionally, according to the above embodiments of the present application, step S104 detects producing well horizontal segment at preset multiple nodes
Second temperature, including：Second temperature of the oil reservoir at preset multiple nodes in detection producing well in real time.
Specifically, can production well oil be measured by the thermocouple or optical fiber testing system of producing well horizontal segment tripping in
Ensconce the second temperature at preset multiple nodes.
Specifically, said program is by detecting second temperature of the oil reservoir at preset multiple nodes in producing well in real time,
So as to reach the real-time of the development degree of detection level section oil reservoir, so as to further improve detection accuracy.
Optionally, according to the above embodiments of the present application, step S106 compares the first temperature and second temperature, determines level
Testing result of the section oil reservoir at preset multiple nodes, including：
Step S1061, if preset multiple node second temperatures are more than the first temperature, it is determined that horizontal segment oil reservoir is passive
With.
Step S1063, if second temperature is less than or equal to second temperature, it is determined that horizontal segment oil reservoir is not employed.
From the foregoing, it will be observed that the application above method is by by second temperature and corresponding first temperature, i.e., with limiting temperature into
Row compares, so that it is determined that the horizontal segment at preset node has whether oil reservoir is employed.
Embodiment 1
According to embodiments of the present invention, a kind of embodiment of the detection device of horizontal segment oil reservoir development degree is provided, Fig. 2 is
The schematic diagram of the detection device of horizontal segment oil reservoir development degree according to embodiments of the present invention, as shown in Fig. 2, the device includes：
First determining module 20, for determining in the case where horizontal segment oil reservoir is not employed, the tube wall of producing well is default
Multiple nodes at the first temperature.
Detection module 22, for detecting the second temperature at the preset multiple nodes of the well oil of producing well plant.
Comparing module 24 for comparing the first temperature and second temperature, determines horizontal segment oil reservoir in preset multiple nodes
The testing result at place, wherein, whether testing result is employed for Representation Level section oil reservoir at preset multiple nodes.
If herein it should be noted that being connected at some node between steam injection well and producing well, between two wells
It conducts heat at the node for thermal convection current, corresponding two well casings wall temperature is suitable at the node；If between steam injection well and producing well
It is not connected at some node, then corresponding two well shaft is heat transfer by heat conduction at the node, corresponding producing well at the node
Temperature is less than steam injection well casing wall temperature；And it is connected at some node between steam injection well and producing well, oil at the node of the connection
Tibetan can just employ, it is assumed that oil reservoir is not employed in entire horizontal segment, then node can not be connected between steam injection well and producing well, only
For heat transfer, according to heat transfer theory, temperature is that production well water equals the limiting temperature that section oil reservoir is not employed at the tube wall of producing well.
Therefore, it can determine whether employed at multiple preset multiple nodes by the way that the first temperature is compared with second temperature.
Second determining module 26, for determining level according to testing result of the horizontal segment oil reservoir at preset multiple nodes
The development degree of section oil reservoir.
From the foregoing, it will be observed that the situation that the above embodiments of the present application determine not employ in horizontal segment oil reservoir by the first determining module
Under, the first temperature of the tube wall of producing well at preset multiple nodes passes through detection module and detects the well oil of producing well and hides
Second temperature at preset multiple nodes by the first temperature of comparison module and second temperature, is determined by second
Module determines testing result of the horizontal segment oil reservoir at preset multiple nodes, according to horizontal segment oil reservoir in preset multiple nodes
The testing result at place determines the development degree of horizontal segment oil reservoir.Said program by determining at multiple preset nodes respectively
Horizontal segment oil reservoir employs situation, to determine the development degree of entire horizontal segment oil reservoir, further, determines horizontal segment oil reservoir not
The limiting temperature of oil reservoir in producing well in the case of employing, and by the temperature of the actually detected producing well well oil layer arrived with
Limiting temperature is compared, so that it is determined that the horizontal segment oil reservoir at multiple preset nodes employs situation, program timeliness
Property it is strong, it is at low cost without special installation, and can ensure the accuracy of detection, it is horizontal so as to solve SAGD in the prior art
The technical issues of measurement result of section development degree is inaccurate.
Optionally, according to the above embodiments of the present application, above-mentioned first determining module includes：
First acquisition submodule, for obtaining the Temperature Distribution in steam injection well horizontal segment annular space.
First determination sub-module, for determining that the tube wall of producing well exists according to the Temperature Distribution in steam injection well horizontal segment annular space
The first temperature at preset multiple nodes.
Optionally, according to the above embodiments of the present application, above-mentioned first determination sub-module includes：
Acquiring unit, for obtaining the temperature of the tube wall of producing well point according to the Temperature Distribution in steam injection well horizontal segment annular space
Cloth.
Determination unit determines the tube wall of producing well in preset multiple sections for the Temperature Distribution of the tube wall according to producing well
The first temperature at point.
Optionally, according to the above embodiments of the present application, above-mentioned detection module includes：
Real-time detection sub-module, for detecting second temperature of the oil reservoir at preset multiple nodes in producing well in real time.
Optionally, according to the above embodiments of the present application, above-mentioned comparing module includes：
First determining module, if being more than the first temperature for preset multiple node second temperatures, it is determined that horizontal segment
Oil reservoir is employed.
Second determining module, if being less than or equal to second temperature for second temperature, it is determined that horizontal segment oil reservoir does not move
With.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
In the above embodiment of the present invention, all emphasize particularly on different fields to the description of each embodiment, do not have in some embodiment
The part of detailed description may refer to the associated description of other embodiment.
In several embodiments provided herein, it should be understood that disclosed technology contents can pass through others
Mode is realized.Wherein, the apparatus embodiments described above are merely exemplary, such as the division of the unit, Ke Yiwei
A kind of division of logic function, can there is an other dividing mode in actual implementation, for example, multiple units or component can combine or
Person is desirably integrated into another system or some features can be ignored or does not perform.Another point, shown or discussed is mutual
Between coupling, direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some interfaces, unit or module
It connects, can be electrical or other forms.
The unit illustrated as separating component may or may not be physically separate, be shown as unit
The component shown may or may not be physical unit, you can be located at a place or can also be distributed to multiple
On unit.Some or all of unit therein can be selected according to the actual needs to realize the purpose of this embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
That each unit is individually physically present, can also two or more units integrate in a unit.Above-mentioned integrated list
The form that hardware had both may be used in member is realized, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and is independent product sale or uses
When, it can be stored in a computer read/write memory medium.Based on such understanding, technical scheme of the present invention is substantially
The part to contribute in other words to the prior art or all or part of the technical solution can be in the form of software products
It embodies, which is stored in a storage medium, is used including some instructions so that a computer
Equipment (can be personal computer, server or network equipment etc.) perform each embodiment the method for the present invention whole or
Part steps.And aforementioned storage medium includes：USB flash disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. are various can to store program code
Medium.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of detection method of horizontal segment oil reservoir development degree, which is characterized in that including：
It determines in the case where the horizontal segment oil reservoir is not employed, the first temperature of the tube wall of producing well at preset multiple nodes
Degree；
Detect the second temperature at well oil plant preset multiple nodes of the producing well；
First temperature and the second temperature are compared, determines the horizontal segment oil reservoir at preset multiple nodes
Testing result, wherein, the testing result is used to characterize whether the horizontal segment oil reservoir moves at preset multiple nodes
With；
The dynamic of the horizontal segment oil reservoir is determined according to testing result of the horizontal segment oil reservoir at preset multiple nodes
Use degree.
2. according to the method described in claim 1, it is characterized in that, determine in the case where the horizontal segment oil reservoir is not employed,
First temperature of the tube wall of producing well at preset multiple nodes, including：
Obtain the Temperature Distribution in steam injection well horizontal segment annular space；
Determine the tube wall of the producing well described preset multiple according to the Temperature Distribution in the steam injection well horizontal segment annular space
The first temperature at node.
3. according to the method described in claim 2, it is characterized in that, according to the Temperature Distribution in the steam injection well horizontal segment annular space
Determine first temperature of the tube wall of the producing well at preset multiple nodes, including：
The Temperature Distribution of the tube wall of the producing well is obtained according to the Temperature Distribution in the steam injection well horizontal segment annular space；
Determine the tube wall of the producing well at preset multiple nodes according to the Temperature Distribution of the tube wall of the producing well
The first temperature.
4. according to the method described in claim 1, it is characterized in that, the well oil plant for detecting the producing well is described preset
Second temperature at multiple nodes, including：
The second temperature at well oil plant preset multiple nodes of the producing well is detected in real time.
5. method as claimed in any of claims 1 to 4, which is characterized in that compare first temperature with it is described
Second temperature determines testing result of the horizontal segment oil reservoir at preset multiple nodes, including：
If second temperature described in preset multiple nodes is more than first temperature, it is determined that the horizontal segment oil reservoir moves
With；
If the second temperature is less than or equal to the second temperature, it is determined that the horizontal segment oil reservoir is not employed.
6. a kind of detection device of horizontal segment oil reservoir development degree, which is characterized in that including：
First determining module, for determining that the tube wall of producing well is preset in the case where the horizontal segment oil reservoir is not employed
The first temperature at multiple nodes；
Detection module, for detecting the second temperature at the well oil of producing well plant preset multiple nodes；
Comparing module for comparing first temperature and the second temperature, determines the horizontal segment oil reservoir described default
Multiple nodes at testing result, wherein, the testing result is for characterizing the horizontal segment oil reservoir described preset more
Whether employed at a node；
Second determining module, for determining institute according to testing result of the horizontal segment oil reservoir at preset multiple nodes
State the development degree of horizontal segment oil reservoir.
7. device according to claim 6, which is characterized in that first determining module includes：
First acquisition submodule, for obtaining the Temperature Distribution in steam injection well horizontal segment annular space；
First determination sub-module, for determining the pipe of the producing well according to the Temperature Distribution in the steam injection well horizontal segment annular space
First temperature of the wall at preset multiple nodes.
8. device according to claim 7, which is characterized in that first determination sub-module includes：
Acquiring unit, for obtaining the temperature of the tube wall of the producing well according to the Temperature Distribution in the steam injection well horizontal segment annular space
Degree distribution；
Determination unit determines the tube wall of the producing well described default for the Temperature Distribution of the tube wall according to the producing well
Multiple nodes at the first temperature.
9. device according to claim 6, which is characterized in that the detection module includes：
Real-time detection sub-module, for detect in real time the well oil of the producing well ensconce at preset multiple nodes the
Two temperature.
10. the device according to any one in claim 6 to 9, which is characterized in that the comparing module includes：
First determining module, if being more than first temperature for second temperature described in preset multiple nodes, really
The fixed horizontal segment oil reservoir is employed；
Second determining module, if being less than or equal to the second temperature for the second temperature, it is determined that the horizontal segment
Oil reservoir is not employed.
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