CN106372317B - Method and device for determining oil-containing thickness of tight reservoir - Google Patents
Method and device for determining oil-containing thickness of tight reservoir Download PDFInfo
- Publication number
- CN106372317B CN106372317B CN201610786986.9A CN201610786986A CN106372317B CN 106372317 B CN106372317 B CN 106372317B CN 201610786986 A CN201610786986 A CN 201610786986A CN 106372317 B CN106372317 B CN 106372317B
- Authority
- CN
- China
- Prior art keywords
- oil
- unit
- reservoir
- thickness
- model
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 52
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 56
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 56
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 56
- 230000008569 process Effects 0.000 claims abstract description 29
- 238000012360 testing method Methods 0.000 claims abstract description 14
- 238000004364 calculation method Methods 0.000 claims abstract description 13
- 239000003921 oil Substances 0.000 claims description 126
- 241000894006 Bacteria Species 0.000 claims description 35
- 239000011435 rock Substances 0.000 claims description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 17
- 229910052799 carbon Inorganic materials 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000003208 petroleum Substances 0.000 claims description 9
- 239000010779 crude oil Substances 0.000 claims description 7
- 230000002706 hydrostatic effect Effects 0.000 claims description 7
- 230000035515 penetration Effects 0.000 claims description 7
- 238000006467 substitution reaction Methods 0.000 claims description 3
- 238000011161 development Methods 0.000 abstract description 9
- 238000011156 evaluation Methods 0.000 abstract description 6
- 238000013508 migration Methods 0.000 description 5
- 230000005012 migration Effects 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000004590 computer program Methods 0.000 description 3
- 241000208340 Araliaceae Species 0.000 description 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 235000008434 ginseng Nutrition 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012821 model calculation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/02—Agriculture; Fishing; Forestry; Mining
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Business, Economics & Management (AREA)
- General Physics & Mathematics (AREA)
- Tourism & Hospitality (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Strategic Management (AREA)
- Economics (AREA)
- General Health & Medical Sciences (AREA)
- Human Resources & Organizations (AREA)
- Marketing (AREA)
- Primary Health Care (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Business, Economics & Management (AREA)
- Animal Husbandry (AREA)
- Mining & Mineral Resources (AREA)
- Agronomy & Crop Science (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- Geometry (AREA)
- General Engineering & Computer Science (AREA)
- Marine Sciences & Fisheries (AREA)
Abstract
The invention discloses a method and a device for determining the oil-containing thickness of a tight reservoir, belonging to the technical field of oil and gas field development. The method comprises the steps of obtaining parameters required in the process of obtaining the oil thickness of the reservoir through core tests or well logging explanations, selecting the corresponding parameters to be respectively substituted into a hydrocarbon generation pressurization obtaining model and a capillary pressure difference obtaining model, obtaining the hydrocarbon generation pressurization and the capillary pressure difference, and substituting the corresponding parameters selected in the process of obtaining the oil thickness of the reservoir into the oil thickness obtaining model in combination with the oil thickness of the reservoir to obtain the oil thickness of the reservoir. According to the method for calculating the oil-containing thickness of the compact reservoir, the oil-containing thickness of the reservoir is obtained, a basis is provided for calculation and evaluation of the reserves of the compact oil reservoir, and the error rate of later exploration and development is reduced.
Description
Technical field
The present invention relates to oil-gas field development technical field, in particular to the determination method of a kind of compact reservoir oil-containing thickness and
Device.
Background technique
Fine and close oil oil reservoir is the oil reservoir that a kind of porosity is low, permeability is low, the petroleum in the extremely difficult such oil reservoir of driving of buoyancy
Migration, the main drive of oil migration is that hydrocarbon pressurization and capillary pressure are poor, also because for this purpose, being distributed in compact reservoir
Petroleum mainly close to oil-degrading bacteria and crack.The exploration and development of the compact reservoir composition portion important as oil-gas field development field
Point, its reserves is calculated before exploitation, can more reasonably evaluate reservoir and establishment oilfield development program.Reservoir oil-containing is thick
The important parameter calculated as reserves is spent, the evaluation and exploitation of reservoir are directly affected.
In the research process of existing oil reservoir, reservoir oil-containing thickness is often higher than minimum effecive porosity with more than oil-water interfaces
Or the reservoir effective thickness of minimum effective permeability indicates；It is also possible to analyze and explain storage with well logging, seismic technology
Layer oil-containing thickness.
In the implementation of the present invention, the inventors discovered that in the prior art the prior art has at least the following problems:
Existing oil reservoir is essentially conventional oil reservoir, and the main drive of conventional oil reservoir oil migration is buoyancy, and fine and close oil oil
The main drive for hiding oil migration is that hydrocarbon pressurization and capillary pressure are poor, and fine and close oil is in driving force and Migration mark and often
The difference of oil reservoir is advised, so that the determination method of existing reservoir oil-containing thickness is not suitable for fine and close oily oil reservoir；Seismic technology is to reservoir
Oil-containing identifies that also in exploration, for the reservoir especially more difficult identification of thin tight reservoir oil-containing thickness, logging technique is by high electricity
Resistance rate or extremely low resistivity Lithologic Effects are larger, easily cause erroneous judgement to oil-containing thickness, influence the evaluation of reservoir and the calculating of reserves,
In turn result in the fault of exploration and development.
Summary of the invention
In order to determine the oil-containing thickness of compact reservoir, the present invention provide a kind of compact reservoir oil-containing thickness determination method and
Device.
Specifically, including technical solution below:
On the one hand, a kind of determination method of compact reservoir oil-containing thickness is provided, which comprises
Obtain required parameter in the reservoir oil-containing thickness finding process obtained by rock core test or well log interpretation；
It is pressurized from selecting corresponding parameter to substitute into hydrocarbon respectively in the reservoir oil-containing thickness finding process in required parameter
It seeks model and capillary pressure difference is sought in model, seek hydrocarbon pressurization Δ Pc and capillary pressure difference Δ Pm；
The hydrocarbon is pressurized Δ Pc, the capillary pressure difference Δ Pm and the reservoir oil-containing thickness finding process
In the relevant parameter that selects in required parameter substitute into oil-containing thickness and seek model, obtain reservoir oil-containing thickness Ho.
The calculation formula that model is sought in the hydrocarbon pressurization is as follows:
Wherein:
DQ=Hc × TOC × Kc × OI × ρc/1000
In formula: Δ Pc is hydrocarbon pressurization, unit MPa；Δ Vc is unit oil generation volume incrementss, unit 104m3/
km2；Hc is oil-degrading bacteria thickness, unit m；For oil-degrading bacteria porosity, unit %；Pl is oil-degrading bacteria pressure and hydrostatic pressure, single
Position is MPa；DQ is oil generation intensity, unit 104t/km2；ρoFor underground crude oil density, unit t/m3；A is constant 1；TOC is
Organic carbon content, unit %；Kc is organic carbon recovering coefficient, unit f；OI is oil productivity, unit kg/tTOC；ρcFor
Hydrocarbon source rock density, unit t/m3。
It is as follows that the capillary pressure difference seeks model calculation formula:
In formula: Δ Pm is that capillary pressure is poor, unit MPa；σ is oil water interfacial tension, unit N/m；rcFor hydrocarbon source
Layer throat radius, unit are μm；R is reservoir throat radius, and unit is μm.
The oil-containing thickness seeks model, indicates are as follows:
Ho=Δ H × a+ (H- Δ H × a) × b
Wherein:
In formula: Ho is average oil-containing thickness, unit m in reservoir；Δ H is petroleum depth of penetration, unit m；H is reservoir
Thickness, unit m；L is perpendicular slice fracture interval, unit m；A, b is coefficient, a ∈ { 1,2 }, b ∈ [0,1]；DPa is storage
Layer starting pressure gradient, unit MPa/m.
The oil-containing thickness is sought in model, if reservoir unilateral side is contacted with oil-degrading bacteria, a value is 1；If reservoir
Upper and lower sides are contacted with oil-degrading bacteria, then a value is 2；
If reservoir does not have crack, b value is 0；If the Δ of L > 2 H, b ∈ (0,1)；If the Δ H of L < 2,
B value is 1.
On the other hand, a kind of device of the determination of compact reservoir oil-containing thickness is provided, described device includes:
Parameter acquisition module, for obtaining the reservoir oil-containing thickness finding process obtained by rock core test or well log interpretation
In required parameter；
First computing module, for from selecting corresponding parameter in required parameter in the reservoir oil-containing thickness finding process
Model is sought in the pressurization of substitution hydrocarbon respectively and capillary pressure difference is sought in model, seeks hydrocarbon pressurization Δ Pc and capillary pressure
Poor Δ Pm；
Second computing module, for the hydrocarbon to be pressurized Δ Pc, the capillary pressure difference Δ Pm and the reservoir
The relevant parameter selected in required parameter in oil-containing thickness finding process substitutes into oil-containing thickness and seeks model, and it is thick to obtain reservoir oil-containing
Spend Ho.
First computing module, further includes:
First computing unit, for hydrocarbon pressurization to be calculated；
The calculation formula that model is sought in hydrocarbon pressurization is as follows:
Wherein:
DQ=Hc × TOC × Kc × OI × ρc/1000
In formula: Δ Pc is hydrocarbon pressurization, unit MPa；Δ Vc is unit oil generation volume incrementss, unit 104m3/
km2；Hc is oil-degrading bacteria thickness, unit m；For oil-degrading bacteria porosity, unit %；Pl is oil-degrading bacteria pressure and hydrostatic pressure, single
Position is MPa；DQ is oil generation intensity, unit 104t/km2；ρoFor underground crude oil density, unit t/m3；A is constant 1；TOC is
Organic carbon content, unit %；Kc is organic carbon recovering coefficient, unit f；OI is oil productivity, unit kg/tTOC；ρ c is
Hydrocarbon source rock density, unit t/m3。
First computing module, further includes:
Second computing unit, it is poor for capillary pressure to be calculated；
The calculation formula for seeking model of capillary pressure difference is as follows:
In formula: Δ Pm is that capillary pressure is poor, unit MPa；σ is oil water interfacial tension, unit N/m；rcFor hydrocarbon source
Layer throat radius, unit are μm；R is reservoir throat radius, and unit is μm.
Oil-containing thickness in second computing module seeks model, may be expressed as:
Ho=Δ H × a+ (H- Δ H × a) × b
Wherein:
In formula: Ho is average oil-containing thickness, unit m in reservoir；Δ H is petroleum depth of penetration, unit m；H is reservoir
Thickness, unit m；L is perpendicular slice fracture interval, unit m；A, b is coefficient, a ∈ { 1,2 }, b ∈ [0,1]；DPa is storage
Layer starting pressure gradient, unit MPa/m.
In second computing module, if reservoir unilateral side is contacted with oil-degrading bacteria, a value is 1；If above and below reservoir
Side is contacted with oil-degrading bacteria, then a value is 2；
If reservoir does not have crack, b value is 0；If the Δ of L > 2 H, b ∈ (0,1)；If the Δ H of L < 2,
B value is 1.
Technical solution provided in an embodiment of the present invention the utility model has the advantages that
By proposing a kind of calculation method of compact reservoir oil-containing thickness, i.e., obtained by rock core test or well log interpretation
Required parameter in reservoir oil-containing thickness finding process seeks model in conjunction with hydrocarbon pressurization and capillary pressure difference, seeks reservoir and contain
Oily thickness can provide accurate foundation for the calculating and evaluation of fine and close oily reservoir reserves, reduce the mistake of later period exploration and development
Accidentally rate.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of determination method flow diagram for compact reservoir oil-containing thickness that the embodiment of the present invention one provides；
Fig. 2 is a kind of determination apparatus structure schematic diagram of compact reservoir oil-containing thickness provided by Embodiment 2 of the present invention；
Fig. 3 is oil productivity plate needed for calculating hydrocarbon pressurization provided by Embodiment 2 of the present invention；
Fig. 4 is organic carbon recovering coefficient plate needed for calculating hydrocarbon pressurization provided by Embodiment 2 of the present invention；
Fig. 5 is the required oil water interfacial tension and temperature difference of calculating capillary pressure difference provided by Embodiment 2 of the present invention
Corresponding relationship；
Fig. 6 is the required maximum number throat radius and porosity of calculating capillary pressure difference provided by Embodiment 2 of the present invention
Corresponding relationship；
Fig. 7 is the corresponding relationship of porosity and starting pressure needed for calculating oil-containing thickness provided by Embodiment 2 of the present invention
Figure.
Specific embodiment
To keep technical solution of the present invention and advantage clearer, below in conjunction with attached drawing to embodiment of the present invention make into
One step it is described in detail.
Embodiment one
A kind of determination method of compact reservoir oil-containing thickness is present embodiments provided, is with the domestic basin the XX oil field XX XX group
Invention is further described in detail for example, and referring to Fig. 1, this method process is specific as follows:
Step 101: obtaining required ginseng in the reservoir oil-containing thickness finding process obtained by rock core test or well log interpretation
Number；
Specifically, the domestic basin the XX oil field XX XX group obtains data by rock core test or well log interpretation: the thickness of oil-degrading bacteria
Degree Hc is 14m, density pcFor 2.5g/cm3, porosityIt is 6.2%, throat radius rcIt is 0.005 μm, TOC value is
1.94%, organic carbon maturity Ro are 1.05%；Reservoir thickness H is 5m, porosity 2.98%, perpendicular slice fracture interval L
For 2.85m；One-side contact above and below reservoir and oil-degrading bacteria；Store up interface buried depth 2500m, pressure and hydrostatic pressure Pl=25MPa in source；Underground
Oil density ρoFor 0.787g/cm3；Formation temperature is 71.75 DEG C, and earth's surface room temperature is 20 DEG C, then the two temperature difference is 51.75 DEG C.
Step 102: from selecting corresponding parameter to substitute into hydrocarbon respectively in required parameter in reservoir oil-containing thickness finding process
Model is sought in pressurization and capillary pressure difference is sought in model, seeks hydrocarbon pressurization Δ Pc and capillary pressure difference Δ Pm；
The calculation formula that model is sought in hydrocarbon pressurization is as follows:
Wherein:
DQ=Hc × TOC × Kc × OI × ρc/1000
In formula: Δ Pc is hydrocarbon pressurization, unit MPa；Δ Vc is unit oil generation volume incrementss, unit 104m3/
km2；Hc is oil-degrading bacteria thickness, unit m；For oil-degrading bacteria porosity, unit %；Pl is oil-degrading bacteria pressure and hydrostatic pressure, single
Position is MPa；DQ is oil generation intensity, unit 104t/km2；ρoFor underground crude oil density, unit t/m3；A is constant 1；TOC is
Organic carbon content, unit %；Kc is organic carbon recovering coefficient, unit f；OI is oil productivity, unit kg/tTOC；ρcFor
Hydrocarbon source rock density, unit t/m3；
The step can be realized by a computer program, i.e., the reservoir oil-containing obtained by rock core test or well log interpretation is thick
The storage of the parameter association in model is sought in required parameter and the pressurization of corresponding hydrocarbon in degree finding process, when the corresponding ginseng of input
When number value, so that it may obtain its corresponding hydrocarbon pressurization value.
Specifically, input organic carbon maturity Ro is 1.05% in a computer, is updated to oil productivity plate and had
In machine carbon recovery coefficient plate, shown in following Fig. 3, Fig. 4, it is 204.7kg/tTOC that oil productivity OI, which can be obtained, and organic carbon restores
COEFFICIENT K c is 1.338；The thickness Hc for inputting oil-degrading bacteria respectively again is 14m, density pcFor 2.5g/cm3, porosityFor 6.2%,
TOC value is 1.94%, underground crude oil density poFor 0.787g/cm3, obtaining hydrocarbon pressurization Δ Pc is 4.162MPa；
The calculation formula that capillary pressure difference seeks model is as follows:
In formula: Δ Pm is that capillary pressure is poor, unit MPa；σ is oil water interfacial tension, unit N/m；rcFor hydrocarbon source
Layer throat radius, unit are μm；R is reservoir throat radius, and unit is μm；
The step can be realized by a computer program, i.e., the reservoir oil-containing obtained by rock core test or well log interpretation is thick
Required parameter and corresponding capillary pressure difference seek the storage of the parameter association in model in degree finding process, corresponding when inputting
Parameter value when, so that it may it is poor to obtain its corresponding capillary pressure.
Specifically, pair of input temp difference and reservoir porosity to oil water interfacial tension and temperature difference respectively in a computer
It answers in relational graph and maximum number throat radius corresponding relationship relevant to porosity, as shown in Figure 5,6, obtains oil-water interfaces
Power σ is 0.0156N/m, and reservoir throat radius r is 0.21 μm；Throat radius r is inputted againcIt is 0.005 μm, obtains capillary pressure
Poor Δ Pm is 6.091MPa.
Step 103: hydrocarbon is pressurized institute in Δ Pc, capillary pressure difference Δ Pm and reservoir oil-containing thickness finding process
It needs the relevant parameter selected in parameter to substitute into oil-containing thickness and seeks model, obtain reservoir oil-containing thickness Ho.
Even if the formula that oil-containing thickness seeks model is as follows:
Ho=Δ H × a+ (H- Δ H × a) × b
Wherein:
In formula: Ho is average oil-containing thickness, unit m in reservoir；Δ H is petroleum depth of penetration, unit m；H is reservoir
Thickness, unit m；L is perpendicular slice fracture interval, unit m；A, b is coefficient, a ∈ { 1,2 }, b ∈ [0,1]；DPa is storage
Layer starting pressure gradient, unit MPa/m；
The step can be realized by a computer program, i.e., the reservoir oil-containing obtained by rock core test or well log interpretation is thick
Required parameter, counted hydrocarbon pressurization, the poor and corresponding oil-containing thickness of capillary pressure have been sought in model in degree finding process
Parameter association storage, after inputting corresponding parameter value, so that it may obtain final oil-containing thickness value.
Specifically, it is contacted due to reservoir unilateral side with oil-degrading bacteria, so a is 1；8 mouthfuls of wells, 52 blocks of rock cores are inputted in a computer
The corresponding relationship of the plate of Mercury injection data creating, i.e. porosity and starting pressure, as shown in fig. 7, reservoir can be obtained
Starting pressure gradient dPa is 9.391Mpa/m, and calculating petroleum depth of penetration Δ H is 1.092m, and coefficient b is 0.766, and output is fine and close
Oil-containing thickness Ho=4.09m in reservoir.
Method provided in this embodiment, in the reservoir oil-containing thickness finding process obtained by rock core test or well log interpretation
Required parameter seeks model in conjunction with hydrocarbon pressurization and capillary pressure difference, seeks reservoir oil-containing thickness, for fine and close oily reservoir reserves
Calculating and evaluation provide foundation, reduce later period exploration and development fault rate.
Embodiment two
A kind of determining device of compact reservoir oil-containing thickness is present embodiments provided, the device is for executing above-described embodiment
Method in one, referring to fig. 2, which includes:
Parameter acquisition module 201 is sought for obtaining the reservoir oil-containing thickness obtained by rock core test or well log interpretation
Required parameter in the process；
First computing module 202, for from selecting corresponding parameter in required parameter in reservoir oil-containing thickness finding process
Model is sought in the pressurization of substitution hydrocarbon respectively and capillary pressure difference is sought in model, seeks hydrocarbon pressurization Δ Pc and capillary pressure
Poor Δ Pm；
Hydrocarbon is pressurized Δ Pc, capillary pressure difference Δ Pm and reservoir oil-containing thickness and sought by the second computing module 203
The relevant parameter selected in required parameter in the process substitutes into oil-containing thickness and seeks model, obtains reservoir oil-containing thickness Ho.
Wherein, the first computing module further include:
First computing unit 204, for hydrocarbon pressurization to be calculated；
The calculation formula that model is sought in hydrocarbon pressurization is as follows:
Wherein:
DQ=Hc × TOC × Kc × OI × ρc/1000
In formula: Δ Pc is hydrocarbon pressurization, unit MPa；Δ Vc is unit oil generation volume incrementss, unit 104m3/
km2；Hc is oil-degrading bacteria thickness, unit m；For oil-degrading bacteria porosity, unit %；Pl is oil-degrading bacteria pressure and hydrostatic pressure, single
Position is MPa；DQ is oil generation intensity, unit 104t/km2；ρoFor underground crude oil density, unit t/m3；A is constant 1；TOC is
Organic carbon content, unit %；Kc is organic carbon recovering coefficient, unit f；OI is oil productivity, unit kg/tTOC；ρcFor
Hydrocarbon source rock density, unit t/m3；
Second computing unit 205, it is poor for capillary pressure to be calculated；
The calculation formula for seeking model of capillary pressure difference is as follows:
In formula: Δ Pm is that capillary pressure is poor, unit MPa；σ is oil water interfacial tension, unit N/m；rcFor hydrocarbon source
Layer throat radius, unit are μm；R is reservoir throat radius, and unit is μm.
Specifically, the oil-containing thickness in the second computing module 203 seeks model, may be expressed as:
Ho=Δ H × a+ (H- Δ H × a) × b
Wherein:
In formula: Ho is average oil-containing thickness, unit m in reservoir；Δ H is petroleum depth of penetration, unit m；H is reservoir
Thickness, unit m；L is fracture interval, unit m；A, b is coefficient, a ∈ { 1,2 }, b ∈ [0,1]；DPa is reservoir starting pressure
Force gradient, unit MPa/m.
Wherein, if reservoir unilateral side is contacted with oil-degrading bacteria, a value is 1；If reservoir upper and lower sides connect with oil-degrading bacteria
Touching, then a value is 2；
If reservoir does not have crack, b value is 0；If the Δ of L > 2 H, b ∈ (0,1)；If the Δ H of L < 2,
B value is 1.
Device provided in this embodiment, in the reservoir oil-containing thickness finding process obtained by rock core test or well log interpretation
Required parameter seeks model in conjunction with hydrocarbon pressurization and capillary pressure difference, seeks reservoir oil-containing thickness, for fine and close oily reservoir reserves
Calculating and evaluation provide foundation, reduce later period exploration and development fault rate.
It should be noted that a kind of determining device of compact reservoir oil-containing thickness provided by the above embodiment and a kind of densification
The determination embodiment of the method for reservoir oil-containing thickness belongs to same design, and specific implementation process is detailed in embodiment of the method, here not
It repeats again.
The above is merely for convenience of it will be understood by those skilled in the art that technical solution of the present invention, not to limit
The present invention.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (8)
1. a kind of determination method of compact reservoir oil-containing thickness, which is characterized in that the described method includes:
Obtain required parameter in the reservoir oil-containing thickness finding process obtained by rock core test or well log interpretation；
It is sought from selecting corresponding parameter to substitute into hydrocarbon pressurization respectively in the reservoir oil-containing thickness finding process in required parameter
Model and capillary pressure difference are sought in model, and hydrocarbon pressurization Δ Pc and capillary pressure difference Δ Pm is sought；
Wherein, the calculation formula that model is sought in the hydrocarbon pressurization is as follows:
Wherein:
DQ=Hc × TOC × Kc × OI × ρc/1000
In formula: Δ Pc is hydrocarbon pressurization, unit MPa；Δ Vc is unit oil generation volume incrementss, unit 104m3/km2；Hc
For oil-degrading bacteria thickness, unit m；For oil-degrading bacteria porosity, unit %；Pl is oil-degrading bacteria pressure and hydrostatic pressure, and unit is
MPa；DQ is oil generation intensity, unit 104t/km2；ρoFor underground crude oil density, unit t/m3；A is constant 1；TOC is organic
Carbon content, unit %；Kc is organic carbon recovering coefficient, unit f；OI is oil productivity, unit kg/tTOC；ρ c is hydrocarbon source
Rock density, unit t/m3；
The hydrocarbon is pressurized institute in Δ Pc, the capillary pressure difference Δ Pm and the reservoir oil-containing thickness finding process
It needs the relevant parameter selected in parameter to substitute into oil-containing thickness and seeks model, obtain reservoir oil-containing thickness Ho.
2. the method as described in claim 1, which is characterized in that the capillary pressure difference seeks the calculation formula of model such as
Under:
In formula: Δ Pm is that capillary pressure is poor, unit MPa；σ is oil water interfacial tension, unit N/m；rcFor oil-degrading bacteria venturi
Radius, unit are μm；R is reservoir throat radius, and unit is μm.
3. the method as described in claim 1, which is characterized in that the oil-containing thickness is sought model and is expressed as:
Ho=Δ H × a+ (H- Δ H × a) × b
Wherein:
In formula: Ho is average oil-containing thickness, unit m in reservoir；Δ H is petroleum depth of penetration, unit m；H is that reservoir is thick
Degree, unit m；L is perpendicular slice fracture interval, unit m；A, b is coefficient, a ∈ { 1,2 }, b ∈ [0,1]；DPa is reservoir
Starting pressure gradient, unit MPa/m.
4. method as claimed in claim 3, which is characterized in that the oil-containing thickness is sought in model,
If reservoir unilateral side is contacted with oil-degrading bacteria, a value is 1；If reservoir upper and lower sides are contacted with oil-degrading bacteria, a
Value is 2；
If reservoir does not have crack, b value is 0；If the Δ of L > 2 H, b ∈ (0,1)；If the Δ of L < 2 H, b is taken
Value is 1.
5. a kind of determining device of compact reservoir oil-containing thickness, which is characterized in that described device includes:
Parameter acquisition module, for obtaining institute in the reservoir oil-containing thickness finding process obtained by rock core test or well log interpretation
Need parameter；
First computing module, for from selecting corresponding parameter to distinguish in the reservoir oil-containing thickness finding process in required parameter
Model is sought in substitution hydrocarbon pressurization and capillary pressure difference is sought in model, seeks hydrocarbon pressurization Δ Pc and capillary pressure difference Δ
Pm；
Wherein, first computing module, further includes:
First computing unit, for hydrocarbon pressurization to be calculated；
The calculation formula that model is sought in hydrocarbon pressurization is as follows:
Wherein:
DQ=Hc × TOC × Kc × OI × ρc/1000
In formula: Δ Pc is hydrocarbon pressurization, unit MPa；Δ Vc is unit oil generation volume incrementss, unit 104m3/km2；Hc
For oil-degrading bacteria thickness, unit m；For oil-degrading bacteria porosity, unit %；Pl is oil-degrading bacteria pressure and hydrostatic pressure, and unit is
MPa；DQ is oil generation intensity, unit 104t/km2；ρoFor underground crude oil density, unit t/m3；A is constant 1；TOC is organic
Carbon content, unit %；Kc is organic carbon recovering coefficient, unit f；OI is oil productivity, unit kg/tTOC；ρ c is hydrocarbon source
Rock density, unit t/m3；
Second computing module, for the hydrocarbon to be pressurized Δ Pc, the capillary pressure difference Δ Pm and the reservoir oil-containing
The relevant parameter selected in required parameter in thickness finding process substitutes into oil-containing thickness and seeks model, obtains reservoir oil-containing thickness
Ho。
6. device as claimed in claim 5, which is characterized in that first computing module, further includes:
Second computing unit, it is poor for capillary pressure to be calculated；
The calculation formula for seeking model of capillary pressure difference is as follows:
In formula: Δ Pm is that capillary pressure is poor, unit MPa；σ is oil water interfacial tension, unit N/m；rcFor oil-degrading bacteria venturi
Radius, unit are μm；R is reservoir throat radius, and unit is μm.
7. device as claimed in claim 5, which is characterized in that the oil-containing thickness in second computing module seeks model table
It is shown as:
Ho=Δ H × a+ (H- Δ H × a) × b
Wherein:
In formula: Ho is average oil-containing thickness, unit m in reservoir；Δ H is petroleum depth of penetration, unit m；H is that reservoir is thick
Degree, unit m；L is perpendicular slice fracture interval, unit m；A, b is coefficient, a ∈ { 1,2 }, b ∈ [0,1]；DPa is reservoir
Starting pressure gradient, unit MPa/m.
8. device as claimed in claim 7, which is characterized in that in second computing module,
If reservoir unilateral side is contacted with oil-degrading bacteria, a value is 1；If reservoir upper and lower sides are contacted with oil-degrading bacteria, a
Value is 2；
If reservoir does not have crack, b value is 0；If the Δ of L > 2 H, b ∈ (0,1)；If the Δ of L < 2 H, b is taken
Value is 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610786986.9A CN106372317B (en) | 2016-08-30 | 2016-08-30 | Method and device for determining oil-containing thickness of tight reservoir |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610786986.9A CN106372317B (en) | 2016-08-30 | 2016-08-30 | Method and device for determining oil-containing thickness of tight reservoir |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106372317A CN106372317A (en) | 2017-02-01 |
| CN106372317B true CN106372317B (en) | 2019-08-02 |
Family
ID=57898686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610786986.9A Active CN106372317B (en) | 2016-08-30 | 2016-08-30 | Method and device for determining oil-containing thickness of tight reservoir |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106372317B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110284879B (en) * | 2019-06-14 | 2021-08-17 | 西安石油大学 | Compact reservoir evaluation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103678861A (en) * | 2013-05-15 | 2014-03-26 | 中国石油大学(北京) | Method for determining reservoir forming termination depth and reservoir forming range of tight sandstone gas reservoir |
| CN103759680A (en) * | 2013-12-31 | 2014-04-30 | 中国石油天然气股份有限公司 | Method for measuring occurrence thickness of oil film in micro-nano pore throat of compact reservoir |
| CN104407397A (en) * | 2014-12-02 | 2015-03-11 | 付茜 | Method for determining lower limit of physical property of compact oil and gas reservoir |
| CN104912548A (en) * | 2014-03-13 | 2015-09-16 | 中国石油化工股份有限公司 | Oil reservoir prediction method in different pressure environments on basis of dynamic analysis |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2627310A1 (en) * | 2005-10-28 | 2007-05-18 | Exxonmobil Upstream Research Company | Method for mechanical and capillary seal analysis of a hydrocarbon trap |
-
2016
- 2016-08-30 CN CN201610786986.9A patent/CN106372317B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103678861A (en) * | 2013-05-15 | 2014-03-26 | 中国石油大学(北京) | Method for determining reservoir forming termination depth and reservoir forming range of tight sandstone gas reservoir |
| CN103759680A (en) * | 2013-12-31 | 2014-04-30 | 中国石油天然气股份有限公司 | Method for measuring occurrence thickness of oil film in micro-nano pore throat of compact reservoir |
| CN104912548A (en) * | 2014-03-13 | 2015-09-16 | 中国石油化工股份有限公司 | Oil reservoir prediction method in different pressure environments on basis of dynamic analysis |
| CN104407397A (en) * | 2014-12-02 | 2015-03-11 | 付茜 | Method for determining lower limit of physical property of compact oil and gas reservoir |
Non-Patent Citations (1)
| Title |
|---|
| 四川盆地侏罗系流体包裹体与致密油形成演化;陶士振 等;《岩石学报》;20150415;第31卷(第4期);1089-1100 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106372317A (en) | 2017-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Davarpanah et al. | Integrated production logging tools approach for convenient experimental individual layer permeability measurements in a multi-layered fractured reservoir | |
| Ramey Jr | Interference Analysis for Anisotropic Formations-A Case History (includes associated paper 6406) | |
| Jun et al. | Overpressure origin and its effects on petroleum accumulation in the conglomerate oil province in Mahu Sag, Junggar Basin, NW China | |
| Taotao et al. | Characteristics of shale pores, fractal dimension and their controlling factors determined by nitrogen adsorption and mercury injection methods | |
| CN106651610A (en) | Dynamic analyzing method for shallow ultra-low permeability sandstone reservoir water-filling development | |
| Bliss et al. | The reliability of packer tests for estimating the hydraulic conductivity of aquifers | |
| CN109356567A (en) | Deep water shallow stratum borehole wall stability prediction method | |
| Erke et al. | Low salinity flooding trial at west Salym field | |
| Guoqi et al. | Ascertaining sec⁃ ondary-order sequence of Palaeogene in Jiyang depression and its petroleum geological significance | |
| US11614417B2 (en) | Determining saturation in low resistivity pay zones | |
| Li et al. | Laboratory study on hydrate production using a slow, multistage depressurization strategy | |
| Haagsma et al. | Comparative wellbore integrity evaluation across a complex of oil and gas fields within the Michigan Basin and implications for CO2 storage | |
| CN106372317B (en) | Method and device for determining oil-containing thickness of tight reservoir | |
| CN111582532A (en) | Stress-sensitive oil reservoir horizontal well fluid production capacity prediction method and device | |
| Li et al. | Abandonment process for injection well of China's Shenhua carbon dioxide geological storage demonstration project | |
| CN104533397A (en) | Sandstone air layer quantitative recognition method | |
| CN109162696B (en) | Method for calculating stratum oil saturation by using compensation sound wave | |
| Ursegov et al. | Thermal Performance Challenges and Prospectives of the Russian Largest Carbonate Reservoir with Heavy Oil | |
| Song et al. | Laboratory study on EOR in offshore oilfields by variable concentrations polymer flooding | |
| John et al. | Challenges and opportunities of wireline formation testing in tight reservoirs: a case study from Barmer basin, India | |
| Kong et al. | Mechanistic Studies of Gravity‐Assisted Water Flooding in a Thick Heavy Oil Reservoir through Horizontal Injectors Using Three‐Dimensional Physical Model | |
| Hill et al. | Development of the Stybarrow Field, Western Australia | |
| Tang et al. | Experimental Investigation of CO2 Huff and Puff Process Based on Three-Dimensional Physical Models | |
| Zhongyuan et al. | Fracture deve-lopment regularity and its effects on hydrocarbon accumulations in Paleozoic reservoirs in western Bachu Uplift | |
| Arwini | Excessive Water Production Analysis in the Abu-Attifel Oil Field Using Chan's Diagnostic Plots |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | 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 |