CN113790043B - Real-time drill bit optimization method and system - Google Patents
Real-time drill bit optimization method and system Download PDFInfo
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- CN113790043B CN113790043B CN202111102362.8A CN202111102362A CN113790043B CN 113790043 B CN113790043 B CN 113790043B CN 202111102362 A CN202111102362 A CN 202111102362A CN 113790043 B CN113790043 B CN 113790043B
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000005457 optimization Methods 0.000 title claims abstract description 20
- 239000011435 rock Substances 0.000 claims abstract description 149
- 238000005553 drilling Methods 0.000 claims abstract description 102
- 238000001228 spectrum Methods 0.000 claims abstract description 17
- 238000005299 abrasion Methods 0.000 claims description 16
- 238000005520 cutting process Methods 0.000 claims description 15
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 13
- 239000011707 mineral Substances 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 8
- 229910021532 Calcite Inorganic materials 0.000 claims description 7
- 239000010433 feldspar Substances 0.000 claims description 7
- 239000010453 quartz Substances 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 238000010276 construction Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012417 linear regression Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B45/00—Measuring the drilling time or rate of penetration
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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Abstract
The invention discloses a real-time drill bit optimization method and a real-time drill bit optimization system, wherein the optimization method comprises the following steps: acquiring drilling geological parameters; layering stratum below the position of the to-be-drilled well according to the earthquake velocity spectrum and determining rock drillability of each layer section; establishing a drill bit parameter database; according to acoustic logging data and drilling data of the existing drilling in the area where the drilling is to be performed, a database of the matching degree of the drill bit model and the drillability of the rock is established; and determining the type of the drill bit used in each layer section according to the matching degree of the drill bit type and the rock drillability and the layering result of the rock drillability. The beneficial effects of the invention are as follows: rock drillability layering is carried out on the to-be-drilled well through the seismic velocity spectrum extracted from the seismic data, rock drillability levels of all the intervals to be drilled are calculated according to the combination of the acoustic logging data of the adjacent well and the seismic data of the working area, and then construction of the well is guided according to the rock drillability levels of all the intervals to be drilled, so that the matching degree of the drill bit and all the intervals can be improved.
Description
Technical Field
The invention relates to the technical field of drilling, in particular to a real-time drill bit optimization method and system.
Background
In petroleum drilling engineering, the drill bit is a main tool for rock breaking, and the problems of low drilling efficiency, short service life of the drill bit and the like are caused by the mismatching of the drill bit and stratum, so that reasonable selection of the drill bit plays an important role in improving drilling speed and reducing comprehensive drilling cost, and especially, the drill bit is one of the most main means of drilling speed and is also an important guarantee for reducing accident complexity in safe drilling.
The preferred purpose of the drill bit is to match the drill bit and the stratum, so that the drill bit is required to be matched according to the rock drillability and each stratum of the rock drillability layering, in the prior art, the rock drillability layering is usually carried out on the stratum by using sonic logging information, however, logging is carried out after drilling, so that the rock drillability layering result reflected by the sonic logging information only aims at the existing drilling, and the domestic oil producing stratum is mainly the land-phase sedimentary stratum, and the land-phase sedimentary stratum is poor in transverse continuity, so that the rock drillability layering table of adjacent wells cannot be directly used in drilling, therefore, the prior drill bit preferred method is only suitable for drill bit type selection references aiming at large areas, real-time drilling of specific drilling cannot be guided, and the matching degree of the drill bit and each stratum is not high.
Disclosure of Invention
In view of the foregoing, it is necessary to provide a real-time drill bit optimization method and system, so as to solve the technical problems that the existing drill bit optimization method is only suitable for drill bit model selection references for large areas, cannot guide real-time drilling of specific drilling, and the matching degree of drill bits and various intervals is not high.
To achieve the above object, the present invention provides a real-time bit optimization method, including:
s1, acquiring drilling geological parameters, wherein the drilling geological parameters comprise a position to be drilled, seismic data of an area to be drilled, and acoustic logging data and drilling data of the existing drilling of the area to be drilled;
s2, extracting a seismic velocity spectrum of a position where the well is to be drilled according to seismic data of the region where the well is to be drilled, layering strata below the position where the well is to be drilled according to the seismic velocity spectrum, calculating the layer speed of each layer section, and acquiring the relation between rock drillability and the layer speed according to acoustic logging data of the existing well drilling of the region where the well is to be drilled so as to determine the rock drillability of each layer section;
s3, establishing a drill bit parameter database, wherein the drill bit parameter database comprises a plurality of drill bit models;
s4, establishing a drill bit model and rock drillability matching degree database according to acoustic logging data and drilling data of the existing drilling in the area where the drilling is to be located;
and S5, determining the type of the drill bit used in each layer section according to the matching degree of the type of the drill bit and the drillability of the rock and the layering result of the drillability of the rock.
Preferably, the real-time bit optimization method further comprises: s6, in the drilling process, detecting the mineral components of the logging cuttings in real time, and updating the rock drillability of each layer section of the rock drillability hierarchy according to the mineral components of the logging cuttings.
Preferably, in the step S6, the rock drillability of each layer segment of the rock drillability hierarchy is updated according to the content of quartz, feldspar and calcite of the logging cuttings.
Preferably, the real-time bit optimization method further comprises: and S7, detecting the using state parameters of the drill bit in real time in the drilling process, and updating a matching degree database of the type of the drill bit and the drillability of the rock according to the using state parameters of the drill bit and the drillability of the drilled interval, wherein the using state parameters of the drill bit comprise the mechanical drilling speed of the drill bit.
Preferably, the drill bit parameter database further comprises the number of each drill bit and the expected drill bit residual footage of each drill bit under different rock drillability conditions; the step S5 further includes: and determining the number of the drill bit used in each interval according to the rock drillability of the interval to be drilled, the predicted residual footage of each drill bit under different rock drillability conditions and the thickness of each interval.
Preferably, the specific method for determining the number of the drill bit used for each layer segment according to the rock drillability of the layer segment to be drilled, the predicted remaining drill bit length of each drill bit under different rock drillability conditions and the thickness of each layer segment comprises the following steps: s511, comparing the thickness of the next interval to be drilled with the predicted residual footage of each drill bit in the interval to be drilled; s512, if the ratio of the predicted remaining drilling length of the drill bit in the interval to be drilled to the thickness of the next interval to be drilled is smaller than 1, the drill bit is marked as the lowest priority; s513, if the ratio of the predicted residual drilling length of the drill bit in the interval to be drilled to the thickness of the next interval to be drilled is 1-1.1, the drill bit is marked as the highest priority; s514, if the ratio of the predicted remaining drilling length of the drill bit in the interval to be drilled to the thickness of the next interval to be drilled is greater than 1.1, calibrating the drill bit to be of medium priority; and S515, selecting the drill bit with the highest priority to drill according to the priority of each drill bit.
Preferably, the real-time bit optimization method further comprises: and S8, after the drill is started, determining the footage and the abrasion degree of the last drill bit, and updating the predicted residual footage of each drill bit under different rock drillability conditions according to the footage and the abrasion degree of the last drill bit.
The invention also provides a real-time bit optimization system which comprises a drilling geological parameter acquisition module, a rock drillability layering module, a bit parameter database, a bit model and rock drillability matching degree database and a bit optimization module;
the drilling geological parameter acquisition module is used for acquiring drilling geological parameters, wherein the drilling geological parameters comprise a position to be drilled, seismic data of an area to be drilled, and acoustic logging data and drilling data of the existing drilling of the area to be drilled;
the rock drillability layering module is used for extracting a seismic layer velocity spectrum of a position where the well is to be drilled according to seismic data of the region where the well is to be drilled, acquiring a relation between rock drillability and layer velocity according to existing acoustic logging data of the region where the well is to be drilled, establishing a relation between the rock drillability and depth of the position where the well is to be drilled, and layering the rock drillability of a stratum below the position where the well is to be drilled according to the relation between the rock drillability and the depth of the position where the well is to be drilled;
the drill bit parameter database comprises a plurality of drill bit models;
the drill bit optimization module is used for determining the type of the drill bit used in each layer section according to the drill bit type and rock drillability matching degree database and the rock drillability layering result.
Preferably, the real-time drill bit preference system further comprises a logging cuttings data acquisition module for detecting in real time the mineral composition of the logging cuttings and updating the rock drillability of each interval of the rock drillability hierarchy according to the mineral composition of the logging cuttings.
Preferably, the real-time bit optimizing system further comprises a bit use state detection module, wherein the bit use state detection module is used for detecting bit use state parameters in real time in the drilling process, and updating a bit model and rock drillability matching degree database according to the bit use state parameters and the rock drillability of a drilled layer section, and the bit use state parameters comprise the mechanical drilling speed of the bit.
Compared with the prior art, the technical scheme provided by the invention has the beneficial effects that: rock drillability layering is carried out on the to-be-drilled well through the seismic velocity spectrum extracted from the seismic data, rock drillability levels of all the intervals to be drilled are calculated according to the combination of the acoustic logging data of the adjacent well and the seismic data of the working area, and real-time drilling construction of the well is guided according to the rock drillability levels of all the intervals to be drilled, so that the matching degree of the drill bit and all the intervals can be improved.
Drawings
FIG. 1 is a flow chart of an embodiment of a preferred method of real-time drilling bits provided by the present invention;
FIG. 2 is a schematic flow chart of step S5 in FIG. 1;
fig. 3 is a schematic diagram of an embodiment of a real-time bit preference system provided by the present invention.
Detailed Description
Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and together with the description serve to explain the principles of the invention, and are not intended to limit the scope of the invention.
Example 1:
referring to fig. 1, the present invention provides a real-time drill bit optimization method, which includes:
s1, acquiring drilling geological parameters, wherein the drilling geological parameters comprise a position to be drilled, seismic data of an area to be drilled, and acoustic logging data and drilling data of the existing drilling of the area to be drilled.
S2, extracting a seismic velocity spectrum of a position where the well is to be drilled according to seismic data of the region where the well is to be drilled, layering stratum below the position where the well is to be drilled according to the seismic velocity spectrum, calculating the layer speed of each layer section, and acquiring the relation between rock drillability and the layer speed according to acoustic logging data of the existing well drilling of the region where the well is to be drilled so as to determine the rock drillability of each layer section. The specific operation steps of step S2 are as follows:
firstly, extracting a seismic velocity spectrum of a position to be drilled according to seismic data of a region to be drilled, layering stratum below the position to be drilled according to the seismic velocity spectrum, and calculating the layer speed of each layer section, wherein the method comprises the following steps: making a seismic section which needs to pass through the position where the well to be drilled is located and at least one existing well; the earthquake profile is layered according to the earthquake velocity spectrum, and the correlation degree of the earthquake velocity and the acoustic time difference in acoustic logging is larger, and the correlation degree of the acoustic time difference and the rock drillability is larger, so that the correlation degree of the earthquake velocity extracted from the earthquake data and the rock drillability is larger, the stratum can be layered according to the earthquake velocity spectrum, and after the layering is finished, the average earthquake velocity of each stratum is obtained. It should be noted that when layering, it is necessary to ensure that each layer segment has a thickness of at least more than 50 meters.
Then, according to the acoustic logging data of the existing well in the area where the well is to be drilled, the relation between the rock drillability and the layer speed is obtained to determine the rock drillability of each layer section, and the specific method is as follows: extracting the longitudinal wave time difference delta t of the existing drilling well of each layer section in the seismic section p Rock drillability of the interval is calculated according to the following formula:
wherein K is d For rock drillability, a and b are linear regression coefficients.
Rock drillability K of each interval d After the solution, rock drillability level assignment is performed according to the magnitude of the rock drillability value, so as to determine the rock drillability level. In this embodiment, the rock drillability level is assigned to an integer between 1 and 10 according to the magnitude of the rock drillability value, so as to facilitate subsequent processing.
S3, establishing a drill bit parameter database, wherein the drill bit parameter database comprises a plurality of drill bit models.
And S4, establishing a drill bit model and rock drillability matching degree database according to the acoustic logging data and the drilling data of the existing drilling in the region where the drilling is to be located. The specific method comprises the following steps:
firstly, acquiring acoustic logging data of the existing drilling well in a region, layering the existing drilling well section according to the method in the step S2, and calculating the rock drillability level of each layer section;
and then acquiring drilling data of the drilling well, wherein the drilling data mainly comprises drill bit types, corresponding mechanical drilling rates and unit footage cost used by each interval, and determining the matching degree of the drill bit types and the rock drillability level according to the rock drillability level, the mechanical drilling rates and the unit footage cost of each interval, specifically, the matching degree can be divided into A, B, C, D four grades from good to bad, the matching degree of each drill bit type and each rock drillability level is required to be collected as much as possible, and if partial data is lacking, the matching degree is marked as a null value, so that a matching degree database of the drill bit types and the rock drillability level can be built.
And S5, during drilling, determining the type of the drill bit used in each layer section according to the matching degree of the type of the drill bit and the drillability of the rock and the layering result of the drillability of the rock.
According to the method, rock drillability layering is carried out on the to-be-drilled well through the seismic velocity spectrum extracted from the seismic data, rock drillability levels of all the intervals to be drilled are calculated according to the combination of the acoustic logging data of the adjacent well and the seismic data of the working area, and real-time drilling construction of the well is guided according to the rock drillability levels of all the intervals to be drilled, so that the matching degree of a drill bit and all the intervals can be improved.
Preferably, in order to improve the accuracy of the rock drillability level of each interval, step S5 further comprises:
s6, in the drilling process, detecting mineral components of the logging rock chips in real time, and updating the rock drillability of each layer section of the rock drillability layering according to the mineral components of the logging rock chips.
Specifically, according to the contents of quartz, feldspar and calcite of the logging cuttings, rock drillability of each layer section of the rock drillability layering is updated, the quartz, feldspar and calcite are common hard minerals, the total content of the quartz, feldspar and calcite can reflect the rock hardness of the stratum, and therefore the rock drillability level of the rock, it is understood that in order to obtain the rock drillability level through the contents of the quartz, feldspar and calcite of the logging cuttings, rock drillability level assignment is required according to the total contents of the quartz, feldspar and calcite to determine the rock drillability level, and the specific assignment scaling factor can be determined through a core test.
Preferably, in order to improve accuracy of the database of matching degree between the drill bit model and the drillability of the rock, referring to fig. 1, the method for optimizing the real-time drill bit provided by the invention further includes:
and S7, detecting the using state parameters of the drill bit in real time in the drilling process, and updating a matching degree database of the type of the drill bit and the drillability of the rock according to the using state parameters of the drill bit and the drillability of the drilled interval, wherein the using state parameters of the drill bit comprise the mechanical drilling speed and the unit length cost of the drill bit. The matching degree database of the drill bit model and the rock drillability is updated in real time, and the optimal drill bit type is matched according to the updated database before each drill is drilled, so that error correction can be continuously carried out in the drilling process, and the matching degree of the drill bit model and the rock drillability is continuously improved.
Preferably, in order to reduce the delay of drilling period caused by damage of the drill bit, referring to fig. 1, the drill bit parameter database further includes the number of each drill bit and the predicted remaining footage of each drill bit under different rock drillability conditions;
the step S5 further includes: and determining the number of the drill bit used in each interval according to the rock drillability of the interval to be drilled, the predicted residual footage of each drill bit under different rock drillability conditions and the thickness of each interval.
In the prior art, the drilling of the drill bit is often stopped, the drill bit is started to be replaced and then the drilling tool is put into the well again due to the fact that the drill bit reaches the limit of wear, and a great deal of time is consumed in the process, so that the construction period is delayed.
In view of the above, in the invention, all drill bits are numbered, and the predicted remaining footage of each drill bit under different rock drillability conditions is recorded in the drill bit parameter database, so that when the drill bit is drilled, the predicted remaining footage of the drill bit is selected as far as possible to be larger than the thickness of the next interval to be drilled on the premise that the drill bit model is matched with the rock drillability, thereby avoiding the delay of drilling construction period caused by the damage of the drill bit.
It will be appreciated that the predicted remaining length of the drill bit for different rock drillability conditions may be inferred from manufacturer-supplied data and data from actual drilling.
Preferably, in order to maximize the utilization of each drill bit, referring to fig. 2, a specific method for determining the number of drill bits used for each layer segment according to the rock drillability of the layer segment to be drilled, the predicted remaining drill bit length of each drill bit under different rock drillability conditions, and the thickness of each layer segment includes the following steps:
s511, comparing the thickness of the next interval to be drilled with the predicted residual footage of each drill bit in the interval to be drilled;
s512, if the ratio of the predicted remaining drilling length of the drill bit in the interval to be drilled to the thickness of the next interval to be drilled is smaller than 1, the drill bit is marked as the lowest priority, so that the drill bit with the predicted remaining drilling length slightly larger than the thickness of the next interval to be drilled is preferentially used, and after the drill bit drills out the interval, the drill bit is directly scrapped, so that the damage of the drill bit in the middle section of the interval can be avoided, and the construction period is prolonged;
s513, if the ratio of the predicted remaining length of the drill bit in the interval to be drilled to the thickness of the next interval to be drilled is 1-1.1, calibrating the drill bit as the highest priority
S514, if the ratio of the predicted remaining drilling length of the drill bit in the interval to be drilled to the thickness of the next interval to be drilled is greater than 1.1, calibrating the drill bit to be of medium priority;
and S515, selecting the drill bit with the highest priority to drill according to the priority of each drill bit.
Preferably, in order to improve accuracy of predicting the remaining footage of the drill bit, referring to fig. 1, the method for real-time drill bit according to the present invention further includes:
and S8, after the drill is started, determining the footage and the abrasion degree of the last drill bit, and updating the predicted residual footage of each drill bit under different rock drillability conditions according to the footage and the abrasion degree of the last drill bit.
Specifically, firstly, determining the length of the last drill bit and correspondingly reducing the predicted remaining length of the drill bit under different rock drillability conditions in a drill bit parameter database, wherein the predicted remaining length of the drill bit under different rock drillability conditions is different, so that when the predicted remaining length of the nuclear subtraction drill bit under different rock drillability conditions is calculated, the reduction value of the predicted remaining length of the drill bit under different rock drillability conditions needs to be calculated according to a certain proportion.
And secondly, determining the abrasion degree of the last used drill bit, quantitatively representing the abrasion degree of the drill bit according to the prior art, calculating the predicted remaining drill bit footage of the drill bit under the condition of corresponding rock drillability level according to the abrasion degree of the drill bit and the abrasion degree change of the drill bit, revising the predicted remaining drill bit footage of the drill bit under different rock drillability conditions in a drill bit parameter database according to the predicted remaining drill bit footage, and calculating the predicted remaining drill bit footage of the drill bit of the model when leaving a factory according to the abrasion degree change of the drill bit and the abrasion degree change of the drill bit, so that the predicted remaining drill bit footage of the drill bit of the model in the drill bit parameter database can be revised completely, and the accuracy of the predicted remaining drill bit footage is improved.
Example 2:
referring to fig. 3, the present invention further provides a real-time drill bit optimization system, which includes a drilling geological parameter acquisition module 100, a rock drillability layering module 200, a drill bit parameter database 300, a drill bit model and rock drillability matching degree database 400, a drill bit optimization module 500, a logging cuttings data acquisition module 600, a drill bit usage status detection module 700, and a drill bit footage and wear detection module 800.
The drilling geological parameter obtaining module 100 is configured to obtain drilling geological parameters, where the drilling geological parameters include a position to be drilled, seismic data of an area to be drilled, and acoustic logging data and drilling data of an existing drilling of the area to be drilled.
The rock drillability layering module 200 is configured to extract a seismic layer velocity spectrum of a position where the well is to be drilled according to seismic data of the region where the well is to be drilled, obtain a relationship between rock drillability and layer velocity according to acoustic logging data of an existing well where the well is to be drilled, establish a relationship between rock drillability and depth along with the position where the well is to be drilled, and perform rock drillability layering on a stratum below the position where the well is to be drilled according to the relationship between rock drillability and depth along with the well.
The drill bit parameter database 300 includes the number, model, and predicted remaining footage of each drill bit for different rock drillability conditions.
The drill bit preference module 500 is configured to determine the type of drill bit to be used for each interval based on the drill bit type to rock drillability matching degree database 400 and the rock drillability layering results.
The logging cuttings data acquisition module 600 is configured to detect mineral composition of logging cuttings in real-time and update rock drillability of each interval of a rock drillability hierarchy based on the mineral composition of the logging cuttings.
The drill bit usage state detection module 700 is configured to detect a drill bit usage state parameter in real time during a drilling process, and update a drill bit model and rock drillability matching degree database according to the drill bit usage state parameter and the rock drillability of a drilled interval, wherein the drill bit usage state parameter includes a mechanical drilling rate of the drill bit.
The drill bit footage and wear detection module 800 is configured to determine the footage and wear degree of a last drill bit after the drill is started, and update the predicted remaining footage of each drill bit under different rock drillability conditions according to the footage and wear degree of the last drill bit.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present invention should be included in the scope of the present invention.
Claims (4)
1. A real-time drill bit optimization method, comprising:
s1, acquiring drilling geological parameters, wherein the drilling geological parameters comprise a position to be drilled, seismic data of an area to be drilled, and acoustic logging data and drilling data of the existing drilling of the area to be drilled;
s2, extracting a seismic velocity spectrum of a position where the well is to be drilled according to seismic data of the region where the well is to be drilled, layering strata below the position where the well is to be drilled according to the seismic velocity spectrum, calculating the layer speed of each layer section, and acquiring the relation between rock drillability and the layer speed according to acoustic logging data of the existing well drilling of the region where the well is to be drilled so as to determine the rock drillability of each layer section;
s3, establishing a drill bit parameter database, wherein the drill bit parameter database comprises a plurality of drill bit types, the numbers of all drill bits and predicted drill bit residual footage of all drill bits under different rock drillability conditions;
s4, establishing a drill bit model and rock drillability matching degree database according to acoustic logging data and drilling data of the existing drilling in the area where the drilling is to be located;
s5, determining the types of the drill bits used in each layer section according to the matching degree of the types of the drill bits and the drillability of the rock and the layering result of the drillability of the rock, and determining the numbers of the drill bits used in each layer section according to the drillability of the rock in the layer section to be drilled, the predicted residual footage of each drill bit under different drillability conditions and the thickness of each layer section;
s6, in the drilling process, detecting mineral components of the logging cuttings in real time, and updating the rock drillability of each layer section of the rock drillability layering according to the mineral components of the logging cuttings;
s7, in the drilling process, detecting the using state parameters of the drill bit in real time, and updating a matching degree database of the type of the drill bit and the drillability of the rock according to the using state parameters of the drill bit and the drillability of the drilled layer section, wherein the using state parameters of the drill bit comprise the mechanical drilling speed of the drill bit;
and S8, after the drill is started, determining the footage and the abrasion degree of the last drill bit, and updating the predicted residual footage of each drill bit under different rock drillability conditions according to the footage and the abrasion degree of the last drill bit.
2. The real-time bit optimization method according to claim 1, wherein in the step S6, the rock drillability of each layer segment of the rock drillability hierarchy is updated according to the contents of quartz, feldspar and calcite of the logging cuttings.
3. The real-time bit preference method according to claim 1, wherein the specific method for determining the number of bits used for each interval based on the rock drillability of the interval to be drilled, the estimated remaining length of each bit under different rock drillability conditions, and the thickness of each interval comprises the steps of:
s511, comparing the thickness of the next interval to be drilled with the predicted residual footage of each drill bit in the interval to be drilled;
s512, if the ratio of the predicted remaining drilling length of the drill bit in the interval to be drilled to the thickness of the next interval to be drilled is smaller than 1, the drill bit is marked as the lowest priority;
s513, if the ratio of the predicted residual drilling length of the drill bit in the interval to be drilled to the thickness of the next interval to be drilled is 1-1.1, the drill bit is marked as the highest priority;
s514, if the ratio of the predicted remaining drilling length of the drill bit in the interval to be drilled to the thickness of the next interval to be drilled is greater than 1.1, calibrating the drill bit to be of medium priority;
and S515, selecting the drill bit with the highest priority to drill according to the priority of each drill bit.
4. The real-time drill bit optimizing system is characterized by comprising a drilling geological parameter acquiring module, a rock drillability layering module, a drill bit parameter database, a drill bit model and rock drillability matching degree database, a drill bit optimizing module, a logging drill chip data acquiring module, a drill bit using state detecting module and a drill bit footage and abrasion detecting module;
the drilling geological parameter acquisition module is used for acquiring drilling geological parameters, wherein the drilling geological parameters comprise a position to be drilled, seismic data of an area to be drilled, and acoustic logging data and drilling data of the existing drilling of the area to be drilled;
the rock drillability layering module is used for extracting a seismic layer velocity spectrum of a position where the well is to be drilled according to seismic data of the region where the well is to be drilled, acquiring a relation between rock drillability and layer velocity according to existing acoustic logging data of the region where the well is to be drilled, establishing a relation between the rock drillability and depth of the position where the well is to be drilled, and layering the rock drillability of a stratum below the position where the well is to be drilled according to the relation between the rock drillability and the depth of the position where the well is to be drilled;
the drill bit parameter database comprises a plurality of drill bit models;
the drill bit optimizing module is used for determining the type of the drill bit used in each layer section according to the drill bit type and rock drillability matching degree database and the rock drillability layering result;
the logging rock chip data acquisition module is used for detecting mineral components of logging rock chips in real time and updating the rock drillability of each layer section of the rock drillability hierarchy according to the mineral components of the logging rock chips;
the drill bit use state detection module is used for detecting drill bit use state parameters in real time in the drilling process, and updating a drill bit model and rock drillability matching degree database according to the drill bit use state parameters and the rock drillability of a drilled layer section, wherein the drill bit use state parameters comprise the mechanical drilling rate of the drill bit;
the drill bit footage and abrasion detection module is used for determining the footage and abrasion degree of the last used drill bit after the drill is started, and updating the predicted remaining footage of each drill bit under different rock drillability conditions according to the footage and abrasion degree of the last used drill bit.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879064A (en) * | 2015-04-09 | 2015-09-02 | 中国石油天然气集团公司 | Bit allocation method based on average specific energy of well segments |
| CN110889224A (en) * | 2019-11-27 | 2020-03-17 | 四川川庆石油钻采科技有限公司 | Optimization method of drill bit for oil drilling |
| CN111749686A (en) * | 2020-07-08 | 2020-10-09 | 中国石油天然气集团有限公司 | Drill bit rapid optimization method based on stratum drilling resistance parameters |
| CN113255080A (en) * | 2021-06-04 | 2021-08-13 | 西南石油大学 | Composite drill bit optimization method based on fine pressure control drilling technology |
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| US20180371901A1 (en) * | 2017-06-26 | 2018-12-27 | Fracture ID, Inc. | Control of drilling system operations based on drill bit mechanics |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879064A (en) * | 2015-04-09 | 2015-09-02 | 中国石油天然气集团公司 | Bit allocation method based on average specific energy of well segments |
| CN110889224A (en) * | 2019-11-27 | 2020-03-17 | 四川川庆石油钻采科技有限公司 | Optimization method of drill bit for oil drilling |
| CN111749686A (en) * | 2020-07-08 | 2020-10-09 | 中国石油天然气集团有限公司 | Drill bit rapid optimization method based on stratum drilling resistance parameters |
| CN113255080A (en) * | 2021-06-04 | 2021-08-13 | 西南石油大学 | Composite drill bit optimization method based on fine pressure control drilling technology |
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