CN110857625B - Method, device and equipment for acquiring reserve of closed water body fracture-cave unit of carbonate rock - Google Patents
Method, device and equipment for acquiring reserve of closed water body fracture-cave unit of carbonate rock Download PDFInfo
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- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
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Abstract
According to the method, the device and the equipment for acquiring the reserves of the closed water body fracture-cave unit of the carbonate rock, the reserves of the closed water body fracture-cave unit of the reservoir body can be quickly acquired by acquiring the crude oil accumulated output Np, the formation water accumulated output Wp, the volume coefficient Bo of produced formation crude oil, the volume coefficient Bw of produced formation water, the compression coefficient Co of crude oil, the water compression coefficient Cw, the production pressure difference delta P of an oil well and the volume coefficient Boi of original oil, and according to the volume percentage A of the closed water body of the fracture-cave unit and the parameters of the fracture-cave unit acquired above, the reserves of the closed water body fracture-cave unit of the reservoir body can be quickly acquired, and finally the dynamic reserves are pushed.
Description
Technical Field
The embodiment of the invention relates to the field of oil field oil extraction engineering, in particular to a method, a device and equipment for acquiring the reserve of a closed water body fracture-cave unit of carbonate rock.
Background
With the rapid development of the petroleum industry, the field of petroleum exploration is continuously expanded, a great deal of carbonate reservoirs are found, the calculation of the reserves of the carbonate fracture-cavity units is greatly helpful for the evaluation of the reserves of the petroleum and the petroleum exploitation engineering, but the description difficulty of the carbonate reservoirs is extremely high, and no good method exists for calculating the reserves of the fracture-cavity units of the closed water body at present.
The prior art is a research method of application system layering, which decomposes complex oil reservoirs of various fracture-cavity combinations, various oil-water relationships and multiple sets of pressure systems into a plurality of fracture-cavity units with similar fracture-cavity formation factors and the same pressure systems, and forms a dynamic and static combined fracture-cavity unit comprehensive evaluation method and a volumetric reserve calculation and reserve classification evaluation method of 'plane sub-units, sub-storage set types and longitudinal segmentation', but the calculation methods are based on sandstone theory.
However, the sandstone reservoir can realize an oil-water interface, the oil part reserves can be calculated independently, the carbonate oil-water interface can not be determined, and the carbonate reservoir can not obtain the accurate oil reserves by using the sandstone reservoir method.
Disclosure of Invention
The embodiment of the invention provides a method, a device and equipment for acquiring the reserve of a closed water body fracture-cave unit of carbonate rock, which are used for improving the accuracy and convenience of acquiring the reserve of a carbonate rock oil reservoir.
In a first aspect, the invention provides a method for acquiring the reserve capacity of a closed water body fracture-cave unit of carbonate rock, which comprises the following steps:
acquiring the accumulated yield Np of crude oil, the accumulated yield Wp of formation water, the volume coefficient Bo of produced formation crude oil, the volume coefficient Bw of produced formation water, the compression coefficient Co of crude oil, the water compression coefficient Cw, the production pressure difference delta P of an oil well and the volume coefficient Boi of original oil of a fracture-cave unit;
calculating to obtain the dynamic reserves of the fracture-cave unit according to the volume percentage A of the closed water body of the fracture-cave unit in the fracture-cave, the accumulated yield Np of the crude oil, the accumulated yield Wp of the formation water, the volume coefficient Bo of the produced formation crude oil, the volume coefficient Bw of the produced formation water, the compression coefficient Co of the crude oil, the water compression coefficient Cw, the production differential pressure delta P of the oil well and the volume coefficient Boi of the original oil; the dynamic reserve is the reserve of oil of the slotted hole unit;
and pushing the dynamic reserves.
In one possible design, the obtaining of the cumulative crude oil yield Np, the cumulative formation water yield Wp, the produced formation crude oil volume coefficient Bo, the produced formation water volume coefficient Bw, the crude oil compression coefficient Co, the water compression coefficient Cw, the oil well production pressure difference Δ P, the original oil volume coefficient Boi of the fracture-cave unit comprises:
receiving a produced formation crude oil volume coefficient Bo, a produced formation water volume coefficient Bw, a crude oil compression coefficient Co, a water compression coefficient Cw, an oil well production pressure difference delta P, an original oil volume coefficient Boi, a crude oil cumulative output Np and a formation water cumulative output Wp which are input by a user;
alternatively, the first and second electrodes may be,
receiving a produced formation crude oil volume coefficient Bo, a produced formation water volume coefficient Bw, a crude oil compression coefficient Co, a water compression coefficient Cw, an oil well production pressure difference delta P and an original oil volume coefficient Boi which are input by a user;
and receiving the crude oil cumulative output Np and the formation water cumulative output Wp sent by the detection equipment.
In one possible design, calculating and obtaining the dynamic reserves of the fracture-cave unit according to the volume percentage A of the closed water body of the fracture-cave unit in the fracture-cave, the accumulated yield Np of the crude oil, the accumulated yield Wp of the formation water, the volume coefficient Bo of the produced formation crude oil, the volume coefficient Bw of the produced formation water, the compression coefficient Co of the crude oil, the water compression coefficient Cw, the production pressure difference delta P of the oil well and the volume coefficient Boi of the original oil, and the method comprises the following steps:
according to the volume percentage A of the closed water body of the fracture-cave unit in the fracture-cave, the accumulated output Np of the crude oil, the accumulated output Wp of the formation water, the volume coefficient Bo of the produced formation crude oil, the volume coefficient Bw of the produced formation water, the compression coefficient Co of the crude oil, the water compression coefficient Cw, the production differential pressure delta P of the oil well and the volume coefficient Boi of the original oil, a material balance equation is adopted
Calculating to obtain the seamThe dynamic reserve N of hole units.
In one possible design, before calculating and acquiring the dynamic reserves of the fracture-cave unit according to the volume percentage a of the closed water body of the fracture-cave unit in the fracture-cave, the cumulative yield Np of crude oil, the cumulative yield Wp of water, the volume coefficient Bo of produced formation crude oil, the volume coefficient Bw of produced formation water, the compression coefficient Co of crude oil, the water compression coefficient Cw, the total oil layer pressure drop Δ P and the volume coefficient Boi of injected formation oil, the method further comprises:
according to the dynamic and static volume matching relationship
Calculating to obtain the volume percentage A of the closed water body in the seam hole; wherein N represents the dynamic reserve and Vp represents the dynamic constrained reservoir volume.
In one possible design, the said matching relationship according to dynamic and static volumes is adopted
Calculating to obtain the volume percentage A of the closed water body in the slot hole, which comprises the following steps:
verifying the rationality of the volume percentage A of the closed water body in the slot hole according to the preset volume percentage range of the closed water body in the slot hole;
and if the volume percentage A of the closed water body in the slot hole is within the range of the volume percentage A of the closed water body in the slot hole, the volume percentage A of the closed water body in the slot hole is reasonable.
In one possible design, the dynamic and static volume matching relationship includes:
establishing a dynamic and static volume matching relation V according to the static carved pore volume Vs and the dynamic constraint oil reservoir volume Vp p ＝F(V s ) (ii) a Wherein F represents a dynamic and static volume coefficient.
In one possible design, the pushing the dynamic reserve includes:
displaying the dynamic reserves;
alternatively, the first and second electrodes may be,
and sending the dynamic reserves to terminal equipment of a user.
In a second aspect, the present invention provides a carbonate rock storage capacity acquisition device with a closed water body slot hole unit, comprising:
the acquisition module is used for acquiring the crude oil accumulated output Np, the water accumulated output Wp, the produced formation crude oil volume coefficient Bo, the produced formation water volume coefficient Bw, the crude oil compression coefficient Co, the water compression coefficient Cw, the oil layer total pressure drop delta P and the injected formation oil volume coefficient Boi of the fracture-cave unit;
the processing module is used for calculating and obtaining the dynamic reserves of the fracture-cave unit according to the volume percentage A of the closed water body of the fracture-cave unit in the fracture-cave, the accumulated output Np of crude oil, the accumulated output Wp of water, the volume coefficient Bo of produced formation crude oil, the volume coefficient Bw of produced formation water, the compression coefficient Co of crude oil, the water compression coefficient Cw, the total pressure drop delta P of an oil layer and the volume coefficient Boi of injected formation oil; the dynamic reserve is the reserve of oil of the slotted hole unit;
and the sending module is used for pushing the dynamic reserves.
In one possible design, the acquisition module is further configured to acquire the dynamic confined reservoir volume Vp.
In a possible design, the processing module is further configured to adopt the dynamic and static volume matching relationship
And calculating to obtain the volume percentage A of the closed water body in the seam hole.
In a third aspect, the present invention provides a reserve volume acquiring apparatus comprising: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the carbonate rock closed water body slot cell reserve acquisition method as described above in the first aspect and in various possible designs of the first aspect.
In a fourth aspect, the present invention provides a computer-readable storage medium, in which computer-executable instructions are stored, and when a processor executes the computer-executable instructions, the method for acquiring the reserve capacity of the closed water body slot hole unit of the carbonate rock according to the first aspect and various possible designs of the first aspect is implemented.
According to the method, the device and the equipment for acquiring the reserve of the closed water body fracture-cave unit of the carbonate rock, provided by the embodiment of the invention, the reserve of the closed water body fracture-cave unit of the reservoir rock can be quickly acquired by acquiring the crude oil accumulated output Np, the stratum water accumulated output Wp, the produced stratum crude oil volume coefficient Bo, the produced stratum water volume coefficient Bw, the crude oil compression coefficient Co, the water compression coefficient Cw, the oil well production pressure difference delta P and the original oil volume coefficient Boi, and according to the volume percentage A of the closed water body of the fracture-cave unit and the acquired parameters of the fracture-cave unit, the reserve of the closed water body fracture-cave unit of the reservoir rock can be quickly acquired, and finally the dynamic reserve is pushed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic flow chart of a method for acquiring reserve of a closed water body slotted hole unit of carbonate rock according to an embodiment of the invention;
FIG. 2 is an exemplary diagram of a unit with closed body water slots;
FIG. 3 is a graph of the effect of irreducible water saturation on effective compressibility;
FIG. 4 is a cross-sectional view of a sandstone reservoir;
FIG. 5 is a profile view of a carbonate reservoir;
FIG. 6 is a plot of the compressibility and porosity of oil well rock;
FIG. 7 is a flow chart of a method for establishing a dynamic and static volume matching relationship according to an embodiment of the present invention;
FIG. 8 is a process diagram of a dynamic and static volume matching relationship testing method provided by an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a carbonate rock closed water body slotted hole unit reserve acquisition device provided in an embodiment of the present invention;
fig. 10 is a schematic physical structure diagram of a reserve acquisition device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to overcome the problems of the prior art, the invention provides a method and equipment for acquiring the reserve of a closed water body slotted hole unit of carbonate rock, and the scheme is explained in detail through a plurality of specific embodiments.
Fig. 1 is a schematic flow diagram of a method for acquiring reserve of a closed water body slot hole unit of carbonate rock according to an embodiment of the present invention, and as shown in fig. 1, an implementation method of equipment for acquiring reserve of a closed water body slot hole unit of carbonate rock specifically includes the following steps:
s101: and acquiring the accumulated yield Np of the crude oil, the accumulated yield Wp of the formation water, the volume coefficient Bo of the produced formation crude oil, the volume coefficient Bw of the produced formation water, the compression coefficient Co of the crude oil, the water compression coefficient Cw, the production pressure difference delta P of the oil well and the volume coefficient Boi of the original oil of the fracture-cave unit.
Specifically, the above-mentioned parameter obtaining method includes two types:
the first acquisition mode is as follows: receiving a produced formation crude oil volume coefficient Bo, a produced formation water volume coefficient Bw, a crude oil compression coefficient Co, a water compression coefficient Cw, an oil well production pressure difference delta P, an original oil volume coefficient Boi, a crude oil cumulative output Np and a formation water cumulative output Wp which are input by a user;
the second acquisition mode is as follows:
receiving a produced formation crude oil volume coefficient Bo, a produced formation water volume coefficient Bw, a crude oil compression coefficient Co, a water compression coefficient Cw, an oil well production pressure difference delta P and an original oil volume coefficient Boi which are input by a user;
and receiving the crude oil cumulative output Np and the formation water cumulative output Wp sent by the detection equipment.
Wherein the crude oil cumulative production Np and the formation water cumulative production Wp are parameters that can be measured by a flow meter. The numerical value that reachs can read the numerical value through the manual work, perhaps directly sends the numerical value for reserves acquisition facility, and this scheme does not require to this.
The produced formation crude oil volume coefficient Bo and the produced formation water volume coefficient Bw are parameters obtained by calculation through a test method in the exploitation process and are directly input by a user.
The crude oil compression coefficient Co and the water compression coefficient Cw are fixed parameters obtained by calculation of a test method before mining and are directly input by a user.
The volume coefficient of the original oil Boi can be obtained by calculating parameters through a test method before mining and directly input by a user.
And the oil well production pressure difference delta P is the pressure difference between the oil well in the exploitation process and the oil well before exploitation.
In a specific embodiment, the well production pressure differential Δ P may be obtained by receiving a user input; or receiving the oil well production pressure sent by the detection equipment, and calculating and acquiring the oil well production pressure difference delta P through the oil well production pressure and the oil well pressure before exploitation, wherein the scheme does not require the oil well production pressure.
Optionally, the detection device for the production pressure of the oil well may be an oil well pressure sensor, which is not required in this scheme.
Specifically, fig. 2 is an exemplary diagram of a slot and hole unit mode, as shown in fig. 2:
the pattern of the slot-hole unit can be divided into three types: a. a closed slot unit, a slot unit with water invasion, and a closed water slot unit;
the scheme relates to a mode of c. closing a water body slot hole unit, wherein black shows a water body.
S102: and calculating to obtain the dynamic reserves of the fracture-cave unit according to the volume percentage A of the closed water body of the fracture-cave unit in the fracture-cave, the accumulated yield Np of the crude oil, the accumulated yield Wp of the formation water, the volume coefficient Bo of the produced formation crude oil, the volume coefficient Bw of the produced formation water, the compression coefficient Co of the crude oil, the water compression coefficient Cw, the production differential pressure delta P of the oil well and the volume coefficient Boi of the original oil.
According to the volume percentage A of the closed water body of the fracture-cave unit in the fracture-cave, the accumulated yield Np of crude oil, the accumulated yield Wp of formation water, the volume coefficient Bo of produced formation crude oil, the volume coefficient Bw of produced formation water, the compression coefficient Co of crude oil, the water compression coefficient Cw, the production pressure difference delta P of an oil well and the volume coefficient Boi of original oil, a material balance equation is adopted
And calculating to obtain the dynamic reserve N.
Specifically, before calculating and acquiring the dynamic reserve of the slot and hole unit, the method further includes: according to the dynamic and static volume matching relationship
And calculating to obtain the volume percentage A of the closed water body in the slot hole.
Further, according to a preset volume percentage range of the closed water body in the slotted hole, verifying the rationality of the volume percentage A of the closed water body in the slotted hole;
and if the volume percentage A of the closed water body in the slot hole is within the volume percentage range of the closed water body in the slot hole, the volume percentage A of the closed water body in the slot hole is reasonable.
Further, if the volume percentage A of the closed water body in the slotted hole is reasonable, the dynamic reserve N is calculated according to the volume percentage A of the closed water body in the slotted hole.
Specifically, the dynamic and static volume matching relationship includes: establishing a dynamic and static volume matching relation V according to the static carved pore volume Vs and the dynamic constraint oil reservoir volume Vp p ＝F(V s )。
The dynamic and static volume matching relation is established in a closed constant volume anhydrous body type, wherein the static carving pore volume Vs is a measurable fixed value parameter, and the dynamic and static volume coefficient F can be calculated through a test method, so that the dynamic constraint oil reservoir volume Vp can be calculated.
In particular, the material balance equation
The optimization of the material balance equation in the prior art specifically comprises the following steps:
material balance equation before optimization: n is a radical of p B o +W p B w ＝(NB oi C ot +WB wi C wt ) Δ P wherein
The equation comprises the parameters of effective compressibility Cot, formation water compressibility Cwt, injection formation water volume factor Bwi, rock compressibility Cp and irreducible water saturation Swc, wherein NB oi C ot Representing the elastic yield.
Considering the difference between sandstone and carbonate, the sandstone reservoir can implement an oil-water interface, and the reserves of the oil part are calculated independently without considering the water body (as shown in fig. 3, and fig. 3 is a profile of the sandstone reservoir), while the oil-water interface of the carbonate cannot be determined (as shown in fig. 4, fig. 4 is a section view of a carbonate reservoir), oil and water need to be calculated integrally, and a closed water body needs to be considered, so that a closed water body proportion parameter a, namely the volume percentage of the closed water body in the fracture hole, is introduced.
Meanwhile, fracture-cavity carbonate reservoirs mainly use pipe flow, and according to well logging data and indoor test results, the irreducible water saturation Swc of the reservoirs is low, and even if 20% of irreducible water saturation is considered, the influence on the effective compression coefficient Cot is extremely small, so that the irreducible water saturation Swc parameter is removed (as shown in fig. 5, fig. 5 is an embodiment of the influence of irreducible water saturation on the effective compression coefficient).
As shown in fig. 6 and table 1, fig. 6 is a plot of oil well rock compressibility versus porosity scatter; table 1 is a rock compression coefficient test data table of the oil well, and the compression coefficients of the worm-shaped holes and the spherical holes are smaller than 1 multiplied by 10 according to the rock physical property parameters calculation of the oil well -4 MPa -1 And the compression coefficient of the rock is different from that of crude oil by an order of magnitude, and the influence is small (< 3%) after the omission, so that the compression coefficient Cp of the rock is removed.
| Young's modulus | Poisson ratio | Porosity% | Wormhole compression coefficient/Mpa | Spherical hole compression coefficient/Mpa |
| 58310 | 0.36 | 3 | 4.87688E-05 | 3.70858E-05 |
| 58310 | 0.36 | 5 | 5.02577E-05 | 3.85598E-05 |
| 58310 | 0.36 | 8 | 5.26123E-05 | 4.08909E-05 |
| 58310 | 0.36 | 10 | 5.42693E-05 | 4.25313E-05 |
| 58310 | 0.36 | 12 | 5.60016E-05 | 4.42463E-05 |
| 58310 | 0.36 | 14 | 5.78145E-05 | 4.6041E-05 |
| 58310 | 0.36 | 16 | 5.97137E-05 | 4.79212E-05 |
| 58310 | 0.36 | 18 | 6.17055E-05 | 4.98931E-05 |
| 58310 | 0.36 | 20 | 6.37969E-05 | 5.19636E-05 |
| 58310 | 0.36 | 25 | 6.95135E-05 | 5.7623E-05 |
| 58310 | 0.36 | 28 | 7.33246E-05 | 6.1396E-05 |
| 58310 | 0.36 | 30 | 7.60467E-05 | 6.40909E-05 |
TABLE 1
Removing the 2 parameters of the irreducible water saturation Swc and the rock compression coefficient Cp, and increasing the volume percentage A of the closed water body in the fracture-cave, and obtaining a material balance equation more suitable for the fracture-cave type carbonate rock oil reservoir after 1 parameter:
s103: and pushing the dynamic reserves.
Pushing the dynamic reserves, comprising: displaying the dynamic reserves; or, the dynamic reserve is sent to the terminal device of the user, and the scheme does not require the dynamic reserve.
According to the method for acquiring the storage capacity of the closed water body fracture-cave unit of the carbonate rock, the problems that the storage capacity of the closed water body fracture-cave unit of the carbonate rock is difficult to acquire and not high in accuracy are effectively solved, the storage capacity of the closed water body fracture-cave unit of the carbonate rock can be quickly acquired, a good carbonate rock storage capacity is acquired, an oil field application effect is provided, and convenience are provided for oil field management, and the oil field application and convenience are provided for oil field management.
The technical solution of the embodiment of the method shown in fig. 1 will be described in detail below by using several specific examples.
Fig. 7 is a flowchart of a method for establishing a dynamic-static volume matching relationship according to an embodiment of the present invention, and as shown in fig. 7, the process for establishing a matching relationship includes:
s201: the reserves cannot be realized.
In the step, whether the oil reserves in the oil well can be implemented is judged, and if not, a slot body static carving technology is adopted.
Specifically, the oil wells with the reservoir reserves incapable of being implemented comprise carbonate rock reservoir units with closed water body fracture holes.
S202: and (3) a static carving technology of a fracture-cavity body.
And (3) determining the reserve calculation parameters of the carbonate rock by applying a fracture-cave quantitative engraving technology, preferably selecting a typical single well, to the fracture-cave body static engraving technology, namely a fracture-cave engraving volume method.
S203: the pore volume Vs is statically engraved.
And obtaining the static carving pore volume Vs according to the slot body static carving technology.
S204: the reservoir volume Vp is dynamically constrained.
The dynamic confined reservoir volume Vp may be obtained through a test method.
S205: matching relationship V p ＝F(V s )。
Establishing a dynamic and static volume matching relation V according to the static carved pore volume Vs and the dynamic constraint oil reservoir volume Vp obtained by the test method p ＝F(V s ) And the dynamic and static volume coefficient F is the average value of the ratio of the dynamic constraint reservoir volume Vp and the static carving pore volume Vs obtained through multiple tests.
According to the method for establishing the dynamic and static volume matching relationship, through a static carving technology of the fracture body, a static carving pore volume Vs and a dynamic constraint oil reservoir volume Vp are obtained according to a test method, and a dynamic and static volume coefficient F, namely an average value of Vp/Vs ratio, is obtained according to the static carving pore volume Vs and the dynamic constraint oil reservoir volume Vp. Finally, obtaining the current dynamic constraint oil reservoir volume Vp according to the dynamic and static volume coefficient F and the current static carving pore volume Vs measured by the static carving technology of the fracture-cavity body, wherein the dynamic constraint oil reservoir volume Vp is used for establishing a dynamic and static matching relation equation NB oi ＝V p (1-A)。
Table 2 shows the dynamic and static volume matching relationship test data provided in the embodiment of the present invention, as shown in table 2:
on the basis of the embodiment of fig. 7, a matching relationship is established in a closed constant volume anhydrous body, and a dynamic and static volume matching relationship is established on the basis of a static engraved pore volume Vs and a dynamic constraint reservoir volume Vp by optimizing a typical closed constant volume anhydrous body single well 12.
Optionally, the table shown in table 2 includes: serial number, well number, dynamic reserve, dynamic constraint reservoir volume, static sculpture pore volume, vp/Vs. The serial number is the serial number of a 12-well optimized typical closed constant-volume anhydrous single well, the well number is the well number of the 12-well, the dynamic reserve is the final reservoir reserve obtained by each single well, the dynamic constraint reservoir volume and the static carving pore volume are values obtained by measuring each single well, and Vp/Vs is the ratio of the dynamic constraint reservoir volume to the static carving pore volume, namely the dynamic and static volume coefficient F.
| Serial number | Number of well | Dynamic storage (ten thousand tons) | Dynamic constraint reservoir volume (Wanfang) | Static carving pore volume (Wanfang) | Vp/Vs |
| 1 | 8.8 | 23.10 | 36.90 | 0.63 | |
| 2 | 40.1 | 128.4 | 164.00 | 0.78 | |
| 3 | 12.1 | 15.9 | 24.00 | 0.66 | |
| 4 | 24.2 | 83 | 109.74 | 0.76 | |
| 5 | 40.1 | 68.2 | 102.30 | 0.67 | |
| 6 | 15.6 | 24.9 | 30.4 | 0.82 | |
| 7 | 4.1 | 7.5 | 14 | 0.54 | |
| 8 | 25.5 | 51.6 | 61.7 | 0.84 | |
| 9 | 7.10 | 13.5 | 16.9 | 0.80 | |
| 10 | 7.6 | 12.3 | 19.3 | 0.64 | |
| 11 | 6.8 | 14.8 | 23.30 | 0.64 | |
| 12 | 5.2 | 12.2 | 20.2 | 0.60 |
TABLE 2
Fig. 8 is a process diagram of a dynamic-static volume matching relationship testing method provided in the embodiment of the present invention, and as shown in fig. 8, the testing method further includes:
on the basis of the embodiment of fig. 7, an average value of the ratio, i.e., a dynamic and static volume coefficient F, is obtained according to the dynamic constraint reservoir volume Vp and the static engraved pore volume Vs obtained through multiple tests.
Optionally, as shown in fig. 8, a specific experimental calculation result is obtained, and a dynamic and static volume coefficient is obtained according to a measurement result of a 12-port preferred typical closed constant volume anhydrous single well
I.e. F =0.7.
According to the method, the device and the equipment for acquiring the reserves of the closed water body fracture-cave unit of the carbonate rock, the reserves of the closed water body fracture-cave unit of the reservoir body can be quickly acquired by acquiring the crude oil accumulated output Np, the formation water accumulated output Wp, the volume coefficient Bo of produced formation crude oil, the volume coefficient Bw of produced formation water, the compression coefficient Co of crude oil, the water compression coefficient Cw, the production pressure difference delta P of an oil well and the volume coefficient Boi of original oil, and according to the volume percentage A of the closed water body of the fracture-cave unit and the parameters of the fracture-cave unit acquired above, the reserves of the closed water body fracture-cave unit of the reservoir body can be quickly acquired, and finally the dynamic reserves are pushed.
Fig. 9 is a schematic structural diagram of a carbonate rock storage capacity acquisition device with a closed water body slot hole unit according to an embodiment of the present invention, and as shown in fig. 9, the storage capacity acquisition device 10 includes:
the acquisition module 11 is used for acquiring the crude oil cumulative output Np, the water cumulative output Wp, the produced formation crude oil volume coefficient Bo, the produced formation water volume coefficient Bw, the crude oil compression coefficient Co, the water compression coefficient Cw, the oil layer total pressure drop Δ P and the injected formation oil volume coefficient Boi of the fracture-cave unit;
optionally, the parameter may be obtained by user input, or may be remotely transmitted, for example, by directly reading from a flow meter or directly reading from a pressure sensor, which is not required by the present solution.
Optionally, the obtaining module is further configured to obtain a dynamic constraint reservoir volume Vp, where the dynamic constraint reservoir volume Vp is used to establish a dynamic and static matching relationship equation NB oi ＝V p (1-A), the mode of acquiring the parameters can be user input, and the scheme does not require the mode.
Optionally, the obtaining module is further configured to obtain a static engraved pore volume Vs, where the static engraved pore volume Vs is used to establish an equation V p ＝F(V s ) The mode of acquiring the parameters can be user input, and the scheme does not require the mode.
The processing module 12 is configured to calculate and obtain a dynamic reserve of the fracture-cave unit according to a volume percentage a of a closed water body of the fracture-cave unit in the fracture-cave, the accumulated yield Np of crude oil, the accumulated yield Wp of formation water, a volume coefficient Bo of produced formation crude oil, a volume coefficient Bw of produced formation water, a compression coefficient Co of crude oil, a water compression coefficient Cw, a production pressure difference Δ P of an oil well, and a volume coefficient Boi of original oil; the dynamic reserve is the reserve of oil of the fracture-cave unit;
optionally, the processing module is further configured to adopt a dynamic and static volume matching relationship
And calculating to obtain the volume percentage A of the closed water body in the seam hole.
Optionally, the processing module is further configured to adopt a dynamic and static matching relationship V according to the static engraved pore volume Vs, the dynamic constraint oil reservoir volume Vp, and the dynamic and static volume coefficient F p ＝F(V s ) And calculating to obtain the dynamic constraint oil reservoir volume Vp. The static carving pore volume Vs and the dynamic and static volume coefficient F can be obtained through calculation of a test method.
And the sending module 13 is used for pushing the dynamic reserves.
Pushing the dynamic reserves, comprising: displaying the dynamic reserves; or, the dynamic reserve is sent to the user's terminal device, this is not required by the present solution.
The device provided in this embodiment may be used to implement the technical solution of the above method embodiment, and the implementation principle and technical effect are similar, which are not described herein again.
Fig. 10 is a schematic physical structure diagram of a reserve volume acquiring device according to an embodiment of the present invention. As shown in fig. 10, the reserve volume acquiring apparatus 20 of the present embodiment includes: a processor 21 and a memory 22; wherein the content of the first and second substances,
a memory 22 for storing computer-executable instructions;
the processor 21 is configured to execute computer-executable instructions stored in the memory to implement the steps performed by the receiving device in the above embodiments. Reference may be made in particular to the description relating to the method embodiments described above.
Alternatively, the memory 22 may be separate or integrated with the processor 21.
When the memory 22 is provided separately, the voice interaction device further comprises a bus 23 for connecting the memory 22 and the processor 21.
The embodiment of the invention also provides a computer-readable storage medium, wherein a computer executing instruction is stored in the computer-readable storage medium, and when a processor executes the computer executing instruction, the method for acquiring the reserve capacity of the closed water body slot hole unit of the carbonate rock is realized.
In the above Specific implementation of the storage capacity obtaining device, it should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose processors, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: read-only memory (ROM), RAM, flash memory, hard disk, solid state disk, magnetic tape (magnetic tape), floppy disk (flexible disk), optical disk (optical disk), and any combination thereof.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. A carbonate rock closed water body slot hole unit reserve acquisition method is characterized by comprising the following steps:
acquiring the accumulated yield Np of crude oil, the accumulated yield Wp of formation water, the volume coefficient Bo of produced formation crude oil, the volume coefficient Bw of produced formation water, the compression coefficient Co of crude oil, the water compression coefficient Cw, the production pressure difference delta P of an oil well and the volume coefficient Boi of original oil of a fracture-cave unit;
according to the volume percentage A of the closed water body of the fracture-cave unit in the fracture-cave, the accumulated yield Np of the crude oil, the accumulated yield Wp of the formation water, the volume coefficient Bo of the produced formation crude oil, the volume coefficient Bw of the produced formation water, the compression coefficient Co of the crude oil, the water compression coefficient Cw, the production differential pressure delta P of the oil well and the volume coefficient Boi of the original oil, a material balance equation is adopted
Calculating and obtaining the dynamic reserves of the slot hole units; the dynamic reserve is the reserve of oil of the slotted hole unit;
pushing the dynamic reserves;
before the calculating obtains the dynamic reserves of the slot and hole unit, the method further comprises the following steps:
establishing a dynamic and static volume matching relation V according to the static carving pore volume Vs and the dynamic constraint oil reservoir volume Vp p ＝F(V s ) (ii) a Wherein F represents a dynamic and static volume coefficient;
according to the dynamic and static volume matching relationship, adopting
Calculating to obtain the volume percentage A of the closed water body in the seam hole; wherein N represents the dynamic reserve, and Vp represents the dynamic constraint reservoir volume;
verifying the rationality of the volume percentage A of the closed water body in the slot hole according to the preset volume percentage range of the closed water body in the slot hole;
and if the volume percentage A of the closed water body in the slot hole is within the volume percentage range of the closed water body in the slot hole, the volume percentage A of the closed water body in the slot hole is reasonable.
2. The method of claim 1, wherein the obtaining of the cumulative produced amount of crude oil Np, the cumulative produced amount of formation water Wp, the produced formation crude oil volume coefficient Bo, the produced formation water volume coefficient Bw, the crude oil compressibility Co, the water compressibility Cw, the oil well production pressure differential Δ P, and the raw oil volume coefficient Boi for a fracture-cave unit comprises:
receiving a produced formation crude oil volume coefficient Bo, a produced formation water volume coefficient Bw, a crude oil compression coefficient Co, a water compression coefficient Cw, an oil well production pressure difference delta P, an original oil volume coefficient Boi, a crude oil cumulative output Np and a formation water cumulative output Wp which are input by a user;
alternatively, the first and second electrodes may be,
receiving a volume coefficient Bo of produced formation crude oil, a volume coefficient Bw of produced formation water, a compression coefficient Co of crude oil, a water compression coefficient Cw, a production pressure difference delta P of an oil well and a volume coefficient Boi of original oil which are input by a user,
and receiving the crude oil cumulative output Np and the formation water cumulative output Wp sent by the detection equipment.
3. The method of any of claims 1 to 2, wherein pushing the dynamic reserve comprises:
displaying the dynamic reserves;
alternatively, the first and second liquid crystal display panels may be,
and sending the dynamic reserves to the terminal equipment of the user.
4. The utility model provides a carbonate rock has closed water body slot hole unit reserves acquisition device which characterized in that includes:
the acquisition module is used for acquiring the crude oil accumulated output Np, the formation water accumulated output Wp, the produced formation crude oil volume coefficient Bo, the produced formation water volume coefficient Bw, the crude oil compression coefficient Co, the water compression coefficient Cw, the oil well production pressure difference delta P and the original oil volume coefficient Boi of the fracture-cave unit;
the processing module is used for adopting a material balance equation to calculate the volume percentage A of the closed water body of the fracture-cave unit in the fracture-cave, the accumulated output Np of the crude oil, the accumulated output Wp of the formation water, the volume coefficient Bo of the produced formation crude oil, the volume coefficient Bw of the produced formation water, the compression coefficient Co of the crude oil, the water compression coefficient Cw, the production pressure difference delta P of the oil well and the volume coefficient Boi of the original oil according to
Calculating and obtaining the dynamic reserves of the slot hole units; the dynamic reserve is the reserve of oil of the slotted hole unit;
the processing module is also used for calculating and acquiring the dynamic reserve of the slot and hole unit according to the static carving pore volume Vs and the dynamic carving pore volume VsDynamically constraining the volume Vp of the oil reservoir and establishing a dynamic and static volume matching relation V p ＝F(V s ) (ii) a Wherein F represents a dynamic and static volume coefficient;
according to the dynamic and static volume matching relationship, adopting
Calculating to obtain the volume percentage A of the closed water body in the seam hole; wherein N represents the dynamic reserve, and Vp represents the dynamic constraint reservoir volume;
verifying the rationality of the volume percentage A of the closed water body in the slot hole according to the preset volume percentage range of the closed water body in the slot hole;
if the volume percentage A of the closed water body in the slot hole is within the volume percentage range of the closed water body in the slot hole, the volume percentage A of the closed water body in the slot hole is reasonable;
and the sending module is used for pushing the dynamic reserves.
5. A reserve volume acquiring apparatus, characterized by comprising: at least one processor and memory;
the memory stores computer execution instructions;
the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the carbonate closed water body slot cell reserve access method of any of claims 1 to 3.
6. A computer-readable storage medium having computer-executable instructions stored thereon which, when executed by a processor, implement the carbonate salt closed water body fracture-cavity unit reserve acquisition method of any one of claims 1 to 3.
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