CN106372317A - Method and device for determining oil-containing thickness of tight reservoir - Google Patents

Abstract

The invention discloses a method and a device for determining the oil-containing thickness of a tight reservoir, and belongs to the technical field of oil-gas field development. The method comprises the following steps: acquiring parameters needed in a reservoir oil-containing thickness resolving process obtained by a core test or well logging interpretation; selecting corresponding parameters, and substituting the parameters into a hydrocarbon-generating pressurization resolving model and a capillary pressure difference resolving model; resolving hydrocarbon-generating pressurization and a capillary pressure difference; substituting the corresponding parameters selected in the reservoir oil-containing thickness resolving process into an oil-containing thickness resolving model to obtain a reservoir oil-containing thickness. The reservoir oil-containing thickness is resolved by a calculation method for the oil-containing thickness of the tight reservoir, so that a basis is laid for the calculation and evaluation of the reserve of the tight reservoir, and the error rate of later-stage exploration and development is lowered.

Description

A kind of determination method and device of compact reservoir oil-containing thickness

Technical field

The present invention relates to oil-gas field development technical field, particularly to a kind of determination method of compact reservoir oil-containing thickness and Device.

Background technology

Fine and close oil oil reservoir is the oil reservoir that a kind of porosity is low, permeability is low, the extremely difficult oil driving in such oil reservoir of buoyancy Migration, the main drive of its oil migration is hydrocarbon supercharging and capillary pressure is poor, also because for this reason, being distributed in compact reservoir Oil mainly near oil-degrading bacteria and crack.The exploration and development of compact reservoir is as the important composition portion in oil-gas field development field Point, before exploitation, its reserves is calculated, can more reasonably evaluate reservoir and establishment oilfield development program.Reservoir oil-containing is thick The important parameter that degree calculates as reserves, directly affects evaluation and the exploitation of reservoir.

In the research process of existing oil reservoir, reservoir oil-containing thickness commonly use oil-water interfaces more than higher than minimum effecive porosity Or the reservoir effective thickness of minimum effective permeability is representing；It is also possible to being analyzed with well logging, seismic technology and explaining storage Layer oil-containing thickness.

During realizing the present invention, the inventors discovered that in prior art at least there is problems in that

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 hiding oil migration is that hydrocarbon supercharging is poor with capillary pressure, and fine and close oil is on driving force and Migration mark with often The difference of rule oil reservoir is not so that the determination method of existing reservoir oil-containing thickness is suitable for fine and close oil oil reservoir；Seismic technology is to reservoir Oil-containing identifies that, also in exploration, for the reservoir particularly more difficult identification of thin tight reservoir oil-containing thickness, logging technique is subject to high electricity Resistance rate or extremely low resistivity Lithologic Effects are larger, and oil-containing thickness is easily caused with erroneous judgement, the impact evaluation of reservoir and the calculating of reserves, In turn result in the error of exploration and development.

Content of the invention

In order to determine the oil-containing thickness of compact reservoir, the present invention provide a kind of determination method of compact reservoir oil-containing thickness and Device.

Specifically, including following technical scheme:

On the one hand, there is provided a kind of determination method of compact reservoir oil-containing thickness, methods described includes:

Obtain desired parameters during the reservoir oil-containing thickness being obtained by rock core test or well log interpretation is asked for；

Corresponding parameter is selected to substitute into hydrocarbon supercharging respectively desired parameters during described reservoir oil-containing thickness is asked for Ask for model and capillary pressure difference is asked in model, ask for hydrocarbon supercharging δ pc and capillary pressure difference δ pm；

Described hydrocarbon is pressurized δ pc, described capillary pressure difference δ pm, and described reservoir oil-containing thickness and asks for process The relevant parameter selecting in middle desired parameters substitutes into oil-containing thickness and asks for model, obtains reservoir oil-containing thickness h o.

The computing formula that model is asked in described hydrocarbon supercharging is as follows:

$\mathrm{\δ}pc=\frac{\mathrm{\δ}vc}{hc\×{\mathrm{\φ}}_c}\×pl$

Wherein:

Dq=hc × toc × kc × oi × ρ_c/1000

In formula: δ pc is pressurized for hydrocarbon, unit is mpa；δ vc is unit oil generation volume incrementss, and unit is 10⁴m³/ km²；Hc is oil-degrading bacteria thickness, and unit is m；For oil-degrading bacteria porosity, unit is %；Pl is oil-degrading bacteria pressure and hydrostatic pressure, single Position is mpa；Dq is oil generation intensity, and unit is 10⁴t/km²；ρ_oFor underground crude oil density, unit is t/m³；A is constant 1；Toc is Organic carbon content, unit is %；Kc is organic carbon recovering coefficient, and unit is f；Oi is oil productivity, and unit is kg/ttoc；ρ_cFor Hydrocarbon source rock density, unit is t/m³.

It is as follows that described capillary pressure difference asks for model calculation formula:

$\mathrm{\δ}pm=2\mathrm{\σ}\×(\frac{1}{r_c}-\frac{1}{r})$

In formula: δ pm is that capillary pressure is poor, unit is mpa；σ is oil water interfacial tension, and unit is n/m；r_cFor hydrocarbon source Layer throat radius, unit be μm；R be reservoir throat radius, unit be μm.

Described oil-containing thickness asks for model, is expressed as:

Ho=δ h × a+ (h- δ h × a) × b

Wherein:

$b=\frac{2\mathrm{\δ}h}{l}$

In formula: ho is average oil-containing thickness in reservoir, and unit is m；δ h is oil depth of penetration, and unit is m；H is reservoir Thickness, unit is m；L is perpendicular slice fracture interval, and unit is m；A, b are coefficient, a ∈ { 1,2 }, b ∈ [0,1]；Dpa is storage Layer free-boundary problem, unit is mpa/m.

Described oil-containing thickness is asked in model, if reservoir one side is contacted with oil-degrading bacteria, then a value is 1；If reservoir Upper and lower sides are all contacted with oil-degrading bacteria, then a value is 2；

If reservoir does not have crack, then b value is 0；If l > 2 δ h, then b ∈ (0,1)；If l < 2 is δ h, then B value is 1.

On the other hand, there is provided a kind of device of the determination of compact reservoir oil-containing thickness, described device includes:

Parameter acquisition module, asks for process for obtaining the reservoir oil-containing thickness obtaining by rock core test or well log interpretation Middle desired parameters；

First computing module, selects corresponding parameter in desired parameters during asking for from described reservoir oil-containing thickness Model is asked in the supercharging of substitution hydrocarbon and capillary pressure difference is asked in model respectively, asks for hydrocarbon supercharging δ pc and capillary pressure Difference δ pm；

Second computing module, for being pressurized δ pc, described capillary pressure difference δ pm, and described reservoir by described hydrocarbon The relevant parameter that oil-containing thickness selects in desired parameters during asking for substitutes into oil-containing thickness and asks for model, obtains reservoir oil-containing thick Degree ho.

Described first computing module, also includes:

First computing unit, is used for being calculated hydrocarbon supercharging；

The computing formula that model is asked in hydrocarbon supercharging is as follows:

$\mathrm{\&delta;}pc=\frac{\mathrm{\&delta;}vc}{hc\&times;{\mathrm{\&phi;}}_c}\&times;pl$

Wherein:

Dq=hc × toc × kc × oi × ρ_c/1000

In formula: δ pc is pressurized for hydrocarbon, unit is mpa；δ vc is unit oil generation volume incrementss, and unit is 10⁴m³/ km²；Hc is oil-degrading bacteria thickness, and unit is m；For oil-degrading bacteria porosity, unit is %；Pl is oil-degrading bacteria pressure and hydrostatic pressure, single Position is mpa；Dq is oil generation intensity, and unit is 10⁴t/km²；ρ_oFor underground crude oil density, unit is t/m³；A is constant 1；Toc is Organic carbon content, unit is %；Kc is organic carbon recovering coefficient, and unit is f；Oi is oil productivity, and unit is kg/ttoc；ρ c is Hydrocarbon source rock density, unit is t/m³.

Described first computing module, also includes:

Second computing unit, it is poor to be used for being calculated capillary pressure；

Capillary pressure difference ask for model computing formula as follows:

$\mathrm{\&delta;}pm=2\mathrm{\&sigma;}\&times;(\frac{1}{r_c}-\frac{1}{r})$

In formula: δ pm is that capillary pressure is poor, unit is mpa；σ is oil water interfacial tension, and unit is n/m；r_cFor hydrocarbon source Layer throat radius, unit be μm；R be reservoir throat radius, unit be μm.

Oil-containing thickness in described second computing module asks for model, is represented by:

Ho=δ h × a+ (h- δ h × a) × b

Wherein:

$b=\frac{2\mathrm{\&delta;}h}{l}$

In formula: ho is average oil-containing thickness in reservoir, and unit is m；δ h is oil depth of penetration, and unit is m；H is reservoir Thickness, unit is m；L is perpendicular slice fracture interval, and unit is m；A, b are coefficient, a ∈ { 1,2 }, b ∈ [0,1]；Dpa is storage Layer free-boundary problem, unit is mpa/m.

In described second computing module, if reservoir one side is contacted with oil-degrading bacteria, then a value is 1；If reservoir is upper and lower Side is all contacted with oil-degrading bacteria, then a value is 2；

If reservoir does not have crack, then b value is 0；If l > 2 δ h, then b ∈ (0,1)；If l < 2 is δ h, then B value is 1.

The beneficial effect of technical scheme provided in an embodiment of the present invention:

By proposing a kind of computational methods of compact reservoir oil-containing thickness, obtained by rock core test or well log interpretation Reservoir oil-containing thickness ask for during desired parameters, in conjunction with hydrocarbon supercharging and capillary pressure difference ask for model, ask for reservoir and contain Oily thickness, for the calculating of fine and close oil reservoir reserves and can evaluate the accurate foundation of offer, reduce the mistake of later stage exploration and development Rate by mistake.

Brief description

For the technical scheme being illustrated more clearly that in the embodiment of the present invention, will make to required in embodiment description below Accompanying drawing be briefly described it should be apparent that, drawings in the following description are only some embodiments of the present invention, for For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings Accompanying drawing.

Fig. 1 is a kind of determination method flow diagram of 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 that the embodiment of the present invention two provides；

Fig. 3 is the oil productivity plate needed for the supercharging of calculating hydrocarbon that the embodiment of the present invention two provides；

Fig. 4 is the organic carbon recovering coefficient plate needed for the supercharging of calculating hydrocarbon that the embodiment of the present invention two provides；

Fig. 5 is the oil water interfacial tension and the temperature difference that calculate needed for capillary pressure difference that the embodiment of the present invention two provides Corresponding relation figure；

Fig. 6 is the maximum number throat radius and the porosity that calculate needed for capillary pressure difference that the embodiment of the present invention two provides Corresponding relation figure；

Fig. 7 is the embodiment of the present invention two porosity calculating needed for oil-containing thickness providing and the corresponding relation starting pressure Figure.

Specific embodiment

For making technical scheme and advantage clearer, below in conjunction with accompanying drawing embodiment of the present invention is made into One step ground describes in detail.

Embodiment one

Present embodiments provide a kind of determination method of compact reservoir oil-containing thickness, with domestic xx basin xx oil field xx group be Example is described in further detail to the present invention, and referring to Fig. 1, the method flow process is specific as follows:

Step 101: obtain required ginseng during the reservoir oil-containing thickness being obtained by rock core test or well log interpretation is asked for Number；

Specifically, domestic xx basin xx oil field xx group obtains data: the thickness of oil-degrading bacteria by rock core test or well log interpretation Degree hc is 14m, density p_cFor 2.5g/cm³, porosityFor 6.2%, throat radius r_cFor 0.005 μm, toc value is 1.94%, organic carbon Maturity ro is 1.05%；Reservoir thickness h is 5m, and porosity is 2.98%, perpendicular slice fracture interval l For 2.85m；Reservoir and the upper and lower one-side contact of oil-degrading bacteria；Source storage interface buried depth 2500m, pressure and hydrostatic pressure pl=25mpa；Underground Oil density ρ_oFor 0.787g/cm³；Formation temperature is 71.75 DEG C, and earth's surface room temperature is 20 DEG C, then both temperature differences are 51.75 DEG C.

Step 102: select corresponding parameter to substitute into hydrocarbon respectively desired parameters during reservoir oil-containing thickness is asked for Model is asked in supercharging and capillary pressure difference is asked in model, asks for hydrocarbon supercharging δ pc and capillary pressure difference δ pm；

The computing formula that model is asked in hydrocarbon supercharging is as follows:

$\mathrm{\&delta;}pc=\frac{\mathrm{\&delta;}vc}{hc\&times;{\mathrm{\&phi;}}_c}\&times;pl$

Wherein:

Dq=hc × toc × kc × oi × ρ_c/1000

In formula: δ pc is pressurized for hydrocarbon, unit is mpa；δ vc is unit oil generation volume incrementss, and unit is 10⁴m³/ km²；Hc is oil-degrading bacteria thickness, and unit is m；For oil-degrading bacteria porosity, unit is %；Pl is oil-degrading bacteria pressure and hydrostatic pressure, single Position is mpa；Dq is oil generation intensity, and unit is 10⁴t/km²；ρ_oFor underground crude oil density, unit is t/m³；A is constant 1；Toc is Organic carbon content, unit is %；Kc is organic carbon recovering coefficient, and unit is f；Oi is oil productivity, and unit is kg/ttoc；ρ_cFor Hydrocarbon source rock density, unit is t/m³；

This step can be realized by computer program, and the reservoir oil-containing that will be obtained by rock core test or well log interpretation is thick Spend desired parameters and corresponding hydrocarbon during asking for and be pressurized the parameter association storage asking in model, when the corresponding ginseng of input So that it may obtain its corresponding hydrocarbon supercharging value during number value.

Specifically, input organic carbon Maturity ro is 1.05% in a computer, is updated to oil productivity plate and has In machine carbon recovery coefficient plate, shown in following Fig. 3, Fig. 4, you can obtaining oil productivity oi is 204.7kg/ttoc, and organic carbon recovers Coefficient k c is 1.338；Thickness h c of input oil-degrading bacteria is 14m, density p respectively again_cFor 2.5g/cm³, porosityFor 6.2%, Toc value is 1.94%, underground crude oil density p_oFor 0.787g/cm³, obtaining hydrocarbon supercharging δ pc is 4.162mpa；

The computing formula that capillary pressure difference asks for model is as follows:

$\mathrm{\&delta;}pm=2\mathrm{\&sigma;}\&times;(\frac{1}{r_c}-\frac{1}{r})$

In formula: δ pm is that capillary pressure is poor, unit is mpa；σ is oil water interfacial tension, and unit is n/m；r_cFor hydrocarbon source Layer throat radius, unit be μm；R be reservoir throat radius, unit be μm；

This step can be realized by computer program, and the reservoir oil-containing that will be obtained by rock core test or well log interpretation is thick Degree ask for during the parameter association storage of asking in model of desired parameters and corresponding capillary pressure difference, corresponding when inputting Parameter value when so that it may to obtain its corresponding capillary pressure poor.

Specifically, input temp difference and reservoir porosity are right to oil water interfacial tension and temperature difference respectively in a computer Answer graph of a relation and the maximum number throat radius corresponding relation in figure related to porosity, as shown in Figure 5,6, obtain oil-water interfaces and open Power σ is 0.0156n/m, and reservoir throat radius r is 0.21 μm；Input throat radius r again_cFor 0.005 μm, obtain capillary pressure Difference δ pm is 6.091mpa.

Step 103: hydrocarbon is pressurized institute during δ pc, capillary pressure difference δ pm, and reservoir oil-containing thickness are asked for Need the relevant parameter selecting in parameter to substitute into oil-containing thickness and ask for model, obtain reservoir oil-containing thickness h o.

Even if the formula that oil-containing thickness asks for model is as follows:

Ho=δ h × a+ (h- δ h × a) × b

Wherein:

$b=\frac{2\mathrm{\&delta;}h}{l}$

In formula: ho is average oil-containing thickness in reservoir, and unit is m；δ h is oil depth of penetration, and unit is m；H is reservoir Thickness, unit is m；L is perpendicular slice fracture interval, and unit is m；A, b are coefficient, a ∈ { 1,2 }, b ∈ [0,1]；Dpa is storage Layer free-boundary problem, unit is mpa/m；

This step can be realized by computer program, and the reservoir oil-containing that will be obtained by rock core test or well log interpretation is thick Spend desired parameters during asking for, counted hydrocarbon is pressurized, the poor and corresponding oil-containing thickness of capillary pressure is asked in model Parameter association storage, so that it may obtain final oil-containing thickness value after inputting corresponding parameter value.

Specifically, because reservoir one side is contacted with oil-degrading bacteria, so a is 1；Input 52 blocks of rock cores of 8 mouthfuls of wells in a computer The plate of Mercury injection data creating, i.e. porosity and the corresponding relation figure starting pressure, as shown in Figure 7, you can obtain reservoir Free-boundary problem dpa is 9.391mpa/m, and calculating oil depth of penetration δ h is 1.092m, and coefficient b is 0.766, and output is fine and close Oil-containing thickness h o=4.09m in reservoir.

The method that the present embodiment provides, during the reservoir oil-containing thickness being obtained by rock core test or well log interpretation is asked for Desired parameters, ask for model in conjunction with hydrocarbon supercharging and capillary pressure difference, ask for reservoir oil-containing thickness, for fine and close oil reservoir reserves Calculating and evaluate provide foundation, reduce later stage exploration and development fault rate.

Embodiment two

Present embodiments provide a kind of determination device of compact reservoir oil-containing thickness, this device is used for executing above-described embodiment Method in one, referring to Fig. 2, this device includes:

Parameter acquisition module 201, is asked for for obtaining the reservoir oil-containing thickness being obtained by rock core test or well log interpretation During desired parameters；

First computing module 202, selects corresponding parameter in desired parameters during asking for from reservoir oil-containing thickness Model is asked in the supercharging of substitution hydrocarbon and capillary pressure difference is asked in model respectively, asks for hydrocarbon supercharging δ pc and capillary pressure Difference δ pm；

Second computing module 203, hydrocarbon is pressurized δ pc, capillary pressure difference δ pm, and reservoir oil-containing thickness and asks for During the relevant parameter that selects in desired parameters substitute into oil-containing thickness and ask for model, obtain reservoir oil-containing thickness h o.

Wherein, the first computing module also includes:

First computing unit 204, is used for being calculated hydrocarbon supercharging；

The computing formula that model is asked in hydrocarbon supercharging is as follows:

$\mathrm{\&delta;}pc=\frac{\mathrm{\&delta;}vc}{hc\&times;{\mathrm{\&phi;}}_c}\&times;pl$

Wherein:

Dq=hc × toc × kc × oi × ρ_c/1000

In formula: δ pc is pressurized for hydrocarbon, unit is mpa；δ vc is unit oil generation volume incrementss, and unit is 10⁴m³/ km²；Hc is oil-degrading bacteria thickness, and unit is m；For oil-degrading bacteria porosity, unit is %；Pl is oil-degrading bacteria pressure and hydrostatic pressure, single Position is mpa；Dq is oil generation intensity, and unit is 10⁴t/km²；ρ_oFor underground crude oil density, unit is t/m³；A is constant 1；Toc is Organic carbon content, unit is %；Kc is organic carbon recovering coefficient, and unit is f；Oi is oil productivity, and unit is kg/ttoc；ρ_cFor Hydrocarbon source rock density, unit is t/m³；

Second computing unit 205, it is poor to be used for being calculated capillary pressure；

Capillary pressure difference ask for model computing formula as follows:

$\mathrm{\&delta;}pm=2\mathrm{\&sigma;}\&times;(\frac{1}{r_c}-\frac{1}{r})$

In formula: δ pm is that capillary pressure is poor, unit is mpa；σ is oil water interfacial tension, and unit is n/m；r_cFor hydrocarbon source Layer throat radius, unit be μm；R be reservoir throat radius, unit be μm.

Specifically, the oil-containing thickness in the second computing module 203 asks for model, is represented by:

Ho=δ h × a+ (h- δ h × a) × b

Wherein:

$b=\frac{2\mathrm{\&delta;}h}{l}$

In formula: ho is average oil-containing thickness in reservoir, and unit is m；δ h is oil depth of penetration, and unit is m；H is reservoir Thickness, unit is m；L is fracture interval, and unit is m；A, b are coefficient, a ∈ { 1,2 }, b ∈ [0,1]；Dpa starts pressure for reservoir Power gradient, unit is mpa/m.

Wherein, if reservoir one side is contacted with oil-degrading bacteria, then a value is 1；If reservoir upper and lower sides are all connect with oil-degrading bacteria Touch, then a value is 2；

If reservoir does not have crack, then b value is 0；If l > 2 δ h, then b ∈ (0,1)；If l < 2 is δ h, then B value is 1.

The device that the present embodiment provides, during the reservoir oil-containing thickness being obtained by rock core test or well log interpretation is asked for Desired parameters, ask for model in conjunction with hydrocarbon supercharging and capillary pressure difference, ask for reservoir oil-containing thickness, for fine and close oil reservoir reserves Calculating and evaluate provide foundation, reduce later stage exploration and development fault rate.

It should be noted that the determination device of a kind of compact reservoir oil-containing thickness that above-described embodiment provides is fine and close with one kind The determination embodiment of the method for reservoir oil-containing thickness belongs to same design, and it implements process and refers to embodiment of the method, here not Repeat again.

The above is for only for ease of those skilled in the art and understands technical scheme, not in order to limit The present invention.All any modification, equivalent substitution and improvement within the spirit and principles in the present invention, made etc., should be included in this Within the protection domain of invention.

Claims (10)

1. a kind of determination method of compact reservoir oil-containing thickness is it is characterised in that methods described includes:

Obtain desired parameters during the reservoir oil-containing thickness being obtained by rock core test or well log interpretation is asked for；

Select corresponding parameter to substitute into hydrocarbon supercharging respectively desired parameters during described reservoir oil-containing thickness is asked for ask for Model and capillary pressure difference are asked in model, ask for hydrocarbon supercharging δ pc and capillary pressure difference δ pm；

Described hydrocarbon is pressurized institute during δ pc, described capillary pressure difference δ pm, and described reservoir oil-containing thickness are asked for Need the relevant parameter selecting in parameter to substitute into oil-containing thickness and ask for model, obtain reservoir oil-containing thickness h o.

2. the method for claim 1 it is characterised in that described hydrocarbon supercharging ask for model computing formula as follows:

$\mathrm{\&delta;}pc=\frac{\mathrm{\&delta;}vc}{hc\&times;{\mathrm{\&phi;}}_c}\&times;pl$

Wherein:

Dq=hc × toc × kc × oi × ρ_c/1000

In formula: δ pc is pressurized for hydrocarbon, unit is mpa；δ vc is unit oil generation volume incrementss, and unit is 10⁴m³/km²；hc For oil-degrading bacteria thickness, unit is m；For oil-degrading bacteria porosity, unit is %；Pl is oil-degrading bacteria pressure and hydrostatic pressure, and unit is mpa；Dq is oil generation intensity, and unit is 10⁴t/km²；ρ_oFor underground crude oil density, unit is t/m³；A is constant 1；Toc is organic Carbon content, unit is %；Kc is organic carbon recovering coefficient, and unit is f；Oi is oil productivity, and unit is kg/ttoc；ρ c is hydrocarbon source Rock density, unit is t/m³.

3. the method for claim 1 is it is characterised in that described capillary pressure difference asks for the computing formula of model such as Under:

$\mathrm{\&delta;}pm=2\mathrm{\&sigma;}\&times;(\frac{1}{r_c}-\frac{1}{r})$

In formula: δ pm is that capillary pressure is poor, unit is mpa；σ is oil water interfacial tension, and unit is n/m；r_cFor oil-degrading bacteria venturi Radius, unit be μm；R be reservoir throat radius, unit be μm.

4. the method for claim 1 is it is characterised in that described oil-containing thickness asks for model representation is:

Ho=δ h × a+ (h- δ h × a) × b

Wherein:

$b=\frac{2\mathrm{\&delta;}h}{l}$

In formula: ho is average oil-containing thickness in reservoir, and unit is m；δ h is oil depth of penetration, and unit is m；H is that reservoir is thick Degree, unit is m；L is perpendicular slice fracture interval, and unit is m；A, b are coefficient, a ∈ { 1,2 }, b ∈ [0,1]；Dpa is reservoir Free-boundary problem, unit is mpa/m.

5. method as claimed in claim 4 is it is characterised in that described oil-containing thickness is asked in model,

If reservoir one side is contacted with oil-degrading bacteria, then a value is 1；If reservoir upper and lower sides are all contacted with oil-degrading bacteria, then a Value is 2；

If reservoir does not have crack, then b value is 0；If l > 2 δ h, then b ∈ (0,1)；If l < 2 is δ h, then b takes It is worth for 1.

6. a kind of determination device of compact reservoir oil-containing thickness is it is characterised in that described device includes:

Parameter acquisition module, for obtaining institute during the reservoir oil-containing thickness being obtained by rock core test or well log interpretation is asked for Need parameter；

First computing module, for selecting corresponding parameter from described reservoir oil-containing thickness respectively in desired parameters during asking for Model is asked in substitution hydrocarbon supercharging and capillary pressure difference is asked in model, asks for hydrocarbon supercharging δ pc and capillary pressure difference δ pm；

Second computing module, for being pressurized δ pc, described capillary pressure difference δ pm, and described reservoir oil-containing by described hydrocarbon The relevant parameter that thickness selects in desired parameters during asking for substitutes into oil-containing thickness and asks for model, obtains reservoir oil-containing thickness ho.

7. device as claimed in claim 6, it is characterised in that described first computing module, also includes:

First computing unit, is used for being calculated hydrocarbon supercharging；

The computing formula that model is asked in hydrocarbon supercharging is as follows:

$\mathrm{\&delta;}pc=\frac{\mathrm{\&delta;}vc}{hc\&times;{\mathrm{\&phi;}}_c}\&times;pl$

Wherein:

Dq=hc × toc × kc × oi × ρ_c/1000

In formula: δ pc is pressurized for hydrocarbon, unit is mpa；δ vc is unit oil generation volume incrementss, and unit is 10⁴m³/km²；hc For oil-degrading bacteria thickness, unit is m；For oil-degrading bacteria porosity, unit is %；Pl is oil-degrading bacteria pressure and hydrostatic pressure, and unit is mpa；Dq is oil generation intensity, and unit is 10⁴t/km²；ρ_oFor underground crude oil density, unit is t/m³；A is constant 1；Toc is organic Carbon content, unit is %；Kc is organic carbon recovering coefficient, and unit is f；Oi is oil productivity, and unit is kg/ttoc；ρ c is hydrocarbon source Rock density, unit is t/m³.

8. device as claimed in claim 6, it is characterised in that described first computing module, also includes:

Second computing unit, it is poor to be used for being calculated capillary pressure；

Capillary pressure difference ask for model computing formula as follows:

$\mathrm{\&delta;}pm=2\mathrm{\&sigma;}\&times;(\frac{1}{r_c}-\frac{1}{r})$

In formula: δ pm is that capillary pressure is poor, unit is mpa；σ is oil water interfacial tension, and unit is n/m；r_cFor oil-degrading bacteria venturi Radius, unit be μm；R be reservoir throat radius, unit be μm.

9. device as claimed in claim 6 is it is characterised in that the oil-containing thickness in described second computing module asks for model table It is shown as:

Ho=δ h × a+ (h- δ h × a) × b

Wherein:

$b=\frac{2\mathrm{\&delta;}h}{l}$

In formula: ho is average oil-containing thickness in reservoir, and unit is m；δ h is oil depth of penetration, and unit is m；H is that reservoir is thick Degree, unit is m；L is perpendicular slice fracture interval, and unit is m；A, b are coefficient, a ∈ { 1,2 }, b ∈ [0,1]；Dpa is reservoir Free-boundary problem, unit is mpa/m.

10. device as claimed in claim 9 is it is characterised in that in described second computing module,

If reservoir one side is contacted with oil-degrading bacteria, then a value is 1；If reservoir upper and lower sides are all contacted with oil-degrading bacteria, then a Value is 2；

If reservoir does not have crack, then b value is 0；If l > 2 δ h, then b ∈ (0,1)；If l < 2 is δ h, then b takes It is worth for 1.