Drill bit screening method and device, electronic equipment and storage medium

Abstract

The embodiment of the invention discloses a drill bit screening method and device, electronic equipment and a storage medium. The method comprises the following steps: for a to-be-drilled well section on a target to-be-drilled well, obtaining characteristic parameters of the to-be-drilled well section; for each adjacent-region drilled well in at least one adjacent-region drilled well corresponding to the target to-be-drilled well, a reference well section on the adjacent-region drilled well can be determined according to the characteristic parameters, use parameters of candidate drill bits for drilling the reference well section historically are determined, and the use parameters at least comprise abrasion characteristics; abrasion indexes of the candidate drill bits are analyzed according to the abrasion characteristics; and according to the wear indexes of all the candidate drill bits corresponding to the drilled wells in the at least one adjacent region, a target drill bit used for drilling the to-be-drilled well section is screened out from all the candidate drill bits. According to the technical scheme, the effect of screening out the target drill bit with the expected footage is achieved by considering the drill bit abrasion influence.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of oil and gas drilling, and in particular to a drill bit screening method, device, electronic equipment and storage medium. Background Art

[0002] The drill bit is the main tool for breaking rocks during drilling. The quality of the drill bit is directly related to the efficiency and quality of a wellbore formation, and even affects the cost of drilling operations, which is particularly evident in deep oil and gas drilling operations. Therefore, drill bit screening is crucial in drilling operations.

[0003] However, the screening effect of the drill bit screening scheme currently used is not good and needs to be improved. Summary of the invention

[0004] Embodiments of the present invention provide a drill bit screening method, device, electronic device and storage medium, so as to screen out target drill bits with high expected footage by considering the influence of drill bit wear.

[0005] According to one aspect of the present invention, a drill bit screening method is provided, which may include:

[0006] For a well section to be drilled in a target well to be drilled, obtaining characteristic parameters of the well section to be drilled;

[0007] For each of the at least one neighboring well drilled corresponding to the target well to be drilled, determine a reference well section on the neighboring well drilled according to the characteristic parameters, and determine the use parameters of the candidate drill bit that historically drilled the reference well section, wherein the use parameters at least include wear characteristics;

[0008] Analyzing the wear index of the candidate drill bit based on the wear characteristics;

[0009] According to the wear indexes of all candidate drill bits corresponding to at least one adjacent well that has been drilled, a target drill bit for drilling the well section to be drilled is screened out from all candidate drill bits.

[0010] According to another aspect of the present invention, a drill bit screening device is provided, which may include:

[0011] A characteristic parameter acquisition module is used to acquire characteristic parameters of the well section to be drilled for the well section to be drilled on the target well;

[0012] A use parameter determination module is used to determine, for each of the at least one neighboring well drilled corresponding to the target well to be drilled, a reference well section on the neighboring well drilled according to the characteristic parameters, and determine the use parameters of the candidate drill bit of the historically drilled reference well section, wherein the use parameters at least include wear characteristics;

[0013] A wear index analysis module, used to analyze the wear index of a candidate drill bit according to the wear characteristics;

[0014] The target drill bit screening module is used to screen out a target drill bit for drilling the section to be drilled from all candidate drill bits according to the wear indexes of all candidate drill bits corresponding to at least one adjacent well that has been drilled.

[0015] According to another aspect of the present invention, there is provided an electronic device, which may include:

[0016] at least one processor; and

[0017] a memory communicatively connected to at least one processor; wherein,

[0018] The memory stores a computer program that can be executed by at least one processor. The computer program is executed by at least one processor so that the drill bit screening method provided by any embodiment of the present invention is implemented when the at least one processor executes the computer program.

[0019] According to another aspect of the present invention, a computer-readable storage medium is provided, on which computer instructions are stored. The computer instructions are used to enable a processor to implement the drill bit screening method provided by any embodiment of the present invention when executed.

[0020] The technical solution of the embodiment of the present invention is to obtain characteristic parameters of the well section to be drilled on the target well to be drilled; for each of at least one adjacent well drilled in the adjacent area corresponding to the target well to be drilled, determine the reference well section on the adjacent well according to the characteristic parameters, and determine the use parameters of the candidate drill bits of the historically drilled reference well section, wherein the use parameters may at least include wear characteristics; analyze the wear index of the candidate drill bits according to the wear characteristics; and select the target drill bit for drilling the well section to be drilled from all the candidate drill bits according to the wear index of all the candidate drill bits corresponding to at least one adjacent well drilled. The above technical solution achieves the effect of selecting the target drill bit with high expected footage by considering the influence of drill bit wear.

[0021] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 is a flow chart of a drill bit screening method provided according to an embodiment of the present invention;

[0024] Figure 2 is a flow chart of another drill bit screening method provided according to an embodiment of the present invention;

[0025] Figure 3 is a flow chart of another drill bit screening method provided according to an embodiment of the present invention;

[0026] Figure 4 is a structural block diagram of a drill bit screening device provided according to an embodiment of the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of an electronic device for implementing the drill bit screening method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. The situations of "target", "original", etc. are similar and will not be repeated here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] Figure 1 : is a flow chart of a drill bit screening method provided in an embodiment of the present invention. This embodiment is applicable to the case of screening drill bits by considering the influence of drill bit wear. The method can be executed by a drill bit screening device provided in an embodiment of the present invention, and the device can be implemented by software and / or hardware. The device can be integrated in an electronic device, and the electronic device can be various user terminals or servers.

[0031] See also Figure 1 The method of the embodiment of the present invention specifically includes the following steps:

[0032] S110, acquiring characteristic parameters of the well section to be drilled in the target well to be drilled.

[0033] The target well to be drilled can be understood as a well to be drilled by a target drill bit selected later. The well section to be drilled can be understood as a well section on the target well to be drilled by a target drill bit. The characteristic parameter can be understood as a parameter used to describe the well section to be drilled. In practical applications, the characteristic parameter can be, for example, at least one of geological stratification data, wellbore size, total footage, and planned drill bit usage.

[0034] The geological stratification data can be used to determine the reference well section that matches the well section to be drilled in the neighboring area. In practical applications, the geological stratification data can be, for example, at least one of the stratigraphic layer name, stratigraphic lithological characteristics, and top and bottom depth data of each stratigraphic layer; further optionally, the geological stratification data can be obtained from the geological design of the target well to be drilled or the drilling engineering design.

[0035] The borehole size can be understood as the size of the borehole to be drilled in the section to be drilled. In practical applications, optionally, because the drill bit size of the target drill bit finally screened out is the same as the borehole size, in order to improve the screening efficiency of the target drill bit, the candidate drill bits can be pre-screened using the borehole size; further optionally, the borehole size can be obtained from the drilling engineering design of the target well to be drilled.

[0036] The total footage can be understood as the total length of the section to be drilled. In practical applications, optionally, when the target well to be drilled is a vertical well, the total footage can be determined based on the difference between the top depth data of the topmost formation and the bottom depth data of the bottommost formation encountered; optionally, when the target well to be drilled is a non-vertical well, such as a directional well, a highly deviated well or a horizontal well, the total footage can be determined based on the difference between the starting depth data and the ending depth data of the section to be drilled, and these depth data can be obtained in the wellbore structure design.

[0037] The planned usage of drill bits can be understood as the number of target drill bits planned to complete the drilling work of the section to be drilled. In actual applications, optionally, the planned usage of drill bits can be obtained from the drill bit usage plan in the drilling engineering design of the target well to be drilled; optionally again, the planned usage of drill bits can be determined based on the length of the section to be drilled and the footage life of the target drill bit.

[0038] Get feature parameters.

[0039] S120. For each of at least one neighboring well that has been drilled corresponding to the target well to be drilled, determine a reference well section on the neighboring well according to the characteristic parameters, and determine usage parameters of a candidate drill bit for the historically drilled reference well section, wherein the usage parameters include at least wear characteristics.

[0040] The neighboring wells that have been drilled can be understood as wells that are spatially adjacent to the target well to be drilled and have been drilled. The number of neighboring wells that have been drilled can be one, two, or more. On this basis, optionally, in order to ensure the diversity and selectability of candidate drill bits, as many neighboring wells as possible can be selected.

[0041] For each of at least one neighboring well that has been drilled, a reference well section on the neighboring well is determined based on the characteristic parameters. The reference well section can be understood as the well section on the neighboring well that is used as a reference during the drill bit screening process. The number of reference well sections can be one, two or more, which is related to the actual situation and is not specifically limited here.

[0042] For each reference well section in at least one reference well section, the candidate drill bit can be understood as a drill bit that has drilled a wellbore in the reference well section in the past. The number of candidate drill bits can be one, two or more, which depends on the actual situation and is not specifically limited here.

[0043] The use parameters can be used to describe the use of the candidate drill bit in the historical drilling process. In practical applications, the use parameters may include at least two levels of parameters that are obtained and preferably can be obtained, wherein at least the obtained use parameters may be at least one of the drill bit manufacturer, drill bit model, International Association of Drilling Contractors (IADC) code, drill bit size, well entry depth, well exit depth, actual footage, mechanical penetration rate, actual drilling pressure, actual rotation speed, pump pressure, displacement, formation encountered and wear characteristics; the best available parameters may be at least one of the actual torque, block, drill bit cost, drilling rig operation fee, drilling time, drilling time and drilling time; more optionally, the use parameters may be obtained from the well history data of the neighboring area, drill bit card or drilling daily report, etc.

[0044] Specifically, the drill bit manufacturer can be understood as the manufacturer of the candidate drill bit. The drill bit model can be understood as the model of the candidate drill bit at the manufacturer. The IADC code can be understood as the code determined according to the international standard code rules for drill bits. The drill bit size can be understood as the outer diameter of the candidate drill bit, which can be expressed in millimeters or inches. The entry depth can be understood as the well depth at which the candidate drill bit starts drilling after entering the well bottom, which can be expressed in meters. The exit depth can be understood as the well depth at which the candidate drill bit stops drilling after being pulled out of the well bottom, which can be expressed in meters. The actual footage can be understood as the total footage of the candidate drill bit from the entry depth to the exit depth, which can be expressed in meters. The mechanical penetration rate can be understood as the footage of the candidate drill bit per unit time (excluding auxiliary operation time), specifically the ratio between the footage and the footage time, which is a quantity reflecting the drilling speed of the drill bit, which can be expressed in meters per hour. The actual drilling pressure can be understood as the force loaded on the candidate drill bit along the axis of the candidate drill bit for breaking the bottom hole rock, which can be expressed in kilonewtons. The actual speed can be understood as the number of revolutions per minute of the candidate drill bit. The pump pressure can be understood as the pump head used to drive the circulation of drilling fluid in the wellbore, and the unit is MPa. The displacement can be understood as the volume of drilling fluid pumped into the wellbore for circulation per unit time to achieve the drilling operation, and the unit can be liters per second. The formation encountered can be understood as the formation with certain lithological characteristics that is broken by the candidate drill bit.

[0045] Wear characteristics can be understood as characteristics used to describe the wear condition of the candidate drill bit. In practical applications, optionally, the wear characteristics can be represented by a code formed for the candidate drill bit according to the IADC drill bit wear grading standard. For example, referring to Table 1, the drill bit wear grading standard is generally 8 digits, the first digit is the wear grade of the inner row of teeth of the cutting structure (represented by "I"), the second digit is the wear grade of the outer row of teeth of the cutting structure (represented by "O"), the third digit is the main passivation feature of the cutting structure (represented by "D"), the fourth digit is the wear position of the cutting structure (represented by "L"), the fifth digit is the bearing seal feature (represented by "B"), the sixth digit is the diameter wear feature (represented by "G"), the seventh digit is other main passivation features (represented by "O"), and the eighth digit is the reason for drilling (represented by "R"). On this basis, Table 2 shows an example of a typical format of wear characteristics, that is, the wear characteristics are 0-0-NO-AEI-NO-TD.

[0046] Table 1 Drill wear classification standards

[0047]

[0048] Table 2 Example of format of typical wear characteristics

[0049] I O D L B G O R 0 0 NO A E I NO TD

[0050] The actual torque can be understood as the torque required to drive the candidate drill bit to rotate and crush the rock, and the unit can be kilonewton meters. The block can be understood as the name of the area in the regional geological structure where the candidate drill bit is drilled. The drill bit fee can be understood as the purchase price of the candidate drill bit when it leaves the factory. The drilling rig operation fee can be understood as the product of the drilling time of the candidate drill bit and the drilling rig daily fee. The drilling time can be understood as the difference between the start and end time of the drilling footage of the candidate drill bit. The drilling time can be understood as the operation time required for the candidate drill bit to be lowered to the bottom of the well. The pulling-out time can be understood as the operation time required for the candidate drill bit to be pulled out from the bottom of the well to the wellhead.

[0051] Determine the usage parameters. It should be noted that the usage parameters at least include wear characteristics.

[0052] S130: Analyze the wear index of the candidate drill bit according to the wear characteristics.

[0053] Among them, the wear index of the candidate drill bit is analyzed according to the wear characteristics. It should be noted that, compared with the wear characteristics, the wear index can describe the wear condition of the candidate drill bit from a numerical perspective, which is convenient for application.

[0054] S140, selecting a target drill bit for drilling the section to be drilled from all candidate drill bits according to the wear indexes of all candidate drill bits corresponding to at least one well that has been drilled in the adjacent area.

[0055] According to the above description, the number of candidate drill bits acting on a well drilled in a neighboring area can be one, two or more. On this basis, all candidate drill bits described in this step can be understood as a set of candidate drill bits acting on any well drilled in a neighboring area among at least one well drilled in a neighboring area, that is, any candidate drill bit among all candidate drill bits is a candidate drill bit acting on a well drilled in a neighboring area among at least one well drilled in a neighboring area.

[0056] After the above three steps, the wear index of each candidate drill bit among all the candidate drill bits can be obtained. Further, according to these wear indexes, the target drill bit for drilling the section to be drilled can be screened out from all the candidate drill bits. In practical applications, optionally, since a small wear index means a high expected footage, the candidate drill bit with the smallest or smaller wear index can be used as the target drill bit, thereby achieving the screening of the target drill bit with a high expected footage (i.e., it can be used multiple times or has a large footage potential).

[0057] It should be noted that the various existing drill bit screening schemes have not taken into account the impact of drill bit wear, that is, they have not taken into account the wear conditions of candidate drill bits. For example, the wear conditions after a certain drilling footage can be divided into two types: those that can continue to be used and those that cannot continue to be used. Although some candidate drill bits have a small actual footage, they can continue to be used multiple times due to their low degree of wear and can still be selected as target drill bits.

[0058] In comparison, the drill bit screening scheme described in the embodiment of the present invention fully considers the influence of drill bit wear, and can screen out target drill bits with high expected footage, thus making up for the shortcomings of the existing drill bit screening scheme. Moreover, because the influence of drill bit wear is fully considered, some candidate drill bits that are pulled out of the well early due to process reasons and have insufficient actual footage but can still be lowered into the well for a second time may be selected as target drill bits.

[0059] The technical solution of the embodiment of the present invention is to obtain characteristic parameters of the well section to be drilled on the target well to be drilled; for each of at least one adjacent well drilled in the adjacent area corresponding to the target well to be drilled, determine the reference well section on the adjacent well according to the characteristic parameters, and determine the use parameters of the candidate drill bits of the historically drilled reference well section, wherein the use parameters may at least include wear characteristics; analyze the wear index of the candidate drill bits according to the wear characteristics; and select the target drill bit for drilling the well section to be drilled from all the candidate drill bits according to the wear index of all the candidate drill bits corresponding to at least one adjacent well drilled. The above technical solution achieves the effect of selecting the target drill bit with high expected footage by considering the influence of drill bit wear.

[0060] An optional technical solution, the characteristic parameters may include at least geological stratification data, and determining the reference well section of the drilled well in the neighboring area according to the characteristic parameters includes:

[0061] For all the drilled sections of the drilled wells in the neighboring area, the drilled sections that match the geological stratification data among all the drilled sections are used as reference sections;

[0062] The characteristic parameters also include the wellbore size, and the usage parameters also include the drill bit size. Before analyzing the wear index of the candidate drill bits according to the wear characteristics, the drill bit screening method further includes:

[0063] According to the drill bit sizes of all candidate drill bits, candidate drill bits whose drill bit sizes do not match the wellbore size are eliminated from all candidate drill bits, and all candidate drill bits are updated after being eliminated.

[0064] The drilled well section can be understood as the well section of the well that has been drilled out of the neighboring well. According to the above description, geological stratification data can be used to describe the geological stratification information of the well section to be drilled. Therefore, according to the geological stratification data, a reference well section matching the well section to be drilled can be determined from all the drilled well sections, thereby achieving the effect of accurate and rapid determination of the reference well section.

[0065] Since the drill bit size of the target drill bit finally screened out must be consistent with the wellbore size, the candidate drill bits with inappropriate drill bit sizes can be eliminated from all candidate drill bits according to the wellbore size, thereby improving the screening efficiency and accuracy of the target drill bits.

[0066] Figure 2 It is a flow chart of another drill bit screening method provided in an embodiment of the present invention. This embodiment is optimized based on the above-mentioned technical solutions. In this embodiment, optionally, the wear characteristics at least include the reason for starting drilling and the blunting characteristics of the cutting structure; the wear index of the candidate drill bit is analyzed according to the wear characteristics, including: checking the reason for starting drilling, and when it is determined that the service life of the candidate drill bit has expired according to the reason for starting drilling, assigning the wear index corresponding to the service life to the candidate drill bit; otherwise, checking the blunting characteristics of the cutting structure, and analyzing the wear index of the candidate drill bit according to the blunting characteristics of the cutting structure. Among them, the explanations of the terms that are the same or corresponding to the above-mentioned embodiments are not repeated here.

[0067] See also Figure 2 The method of this embodiment may specifically include the following steps:

[0068] S210, acquiring characteristic parameters of the well section to be drilled in the target well to be drilled.

[0069] S220. For each of at least one neighboring well that has been drilled corresponding to the target well to be drilled, determine a reference well section on the neighboring well according to characteristic parameters, and determine usage parameters of a candidate drill bit of the historically drilled reference well section, wherein the usage parameters at least include wear characteristics, and the wear characteristics at least include the reason for starting drilling and the blunting characteristics of the cutting structure.

[0070] S230, checking the reason for starting drilling, and if it is determined that the service life of the candidate drill bit has expired according to the reason for starting drilling, assigning a wear index corresponding to the expiration of the service life to the candidate drill bit.

[0071] S240: Otherwise, check the blunting characteristics of the cutting structure, and analyze the wear index of the candidate drill bit according to the blunting characteristics of the cutting structure.

[0072] S250: Select a target drill bit for drilling the section to be drilled from all candidate drill bits according to the wear indexes of all candidate drill bits corresponding to at least one well in the adjacent area.

[0073] The technical solution of the embodiment of the present invention realizes the rapid and accurate determination of the wear index.

[0074] In an optional technical solution, the wear characteristics may also include the wear position and / or diameter wear characteristics of the cutting structure. According to the blunting characteristics of the cutting structure, the wear index of the candidate drill bit is analyzed, including:

[0075] When it is determined that the service life of the candidate drill bit has expired according to the blunting characteristics of the cutting structure, a wear index corresponding to the expiration of the service life is assigned to the candidate drill bit;

[0076] Otherwise, the cutting structure wear position and / or diameter wear characteristics are checked, and the wear index of the candidate drill bit is analyzed based on the cutting structure wear position and / or diameter wear characteristics.

[0077] The above technical solution realizes the rapid and accurate determination of the wear index.

[0078] On this basis, in order to better understand the specific determination process of the above-mentioned wear index as a whole, an exemplary description is given below in combination with specific examples.

[0079] Step (1): Check the reason for starting the drilling (8). In practical applications, the reasons for starting drilling can be divided into two categories. One is the reasons for starting drilling due to the candidate drill bit itself, such as the end of the drill bit life (Hours on bit, HR), low drilling speed (penetration rate, PR, also expressed as ROP) or total / casing depth (TD); the other is the reasons not caused by the candidate drill bit itself, such as downhole motor failure (DMF), downhole tool failure (DTF), drilling string failure (DSF), mid-test (drill stem test, DST), drill plug (DP), core point (CP), formation change (FM), hole problem (HP), left in hole (LIH), change bottom hole assembly (HBA), run logs (LOG), pump pressure problem (PP), drilling repair (rig repair (RIG), drill pipe twist off (TW), torque overload (TQ) or weather conditions (WC).

[0080] If the reason for starting drilling is HR, it means that the service life of the candidate drill bit has expired, and the wear index is directly selected as r. If the reason for starting drilling is PR, the main dulling characteristics (3) of the cutting structure and other main dulling characteristics (7) are checked. On this basis, if (3) or (7) is broken cone (BC), bond failure (BF), broken teeth (BT), cracked cone (CC), cone stuck (CD), cone interference (CI), core concave (CR), chipped teeth (CT), junk damage (JD), heat checking (HC), lost cone (LC), lost teeth / cutters (LT), no rerunnable (NR), pinched bit (PB), ring out (RO), rounded gage (RG), shirtail damage (SD), tracking wear (TR) or washed out bit (WO), it means that the service life of the candidate drill bit has expired and the wear index is r. If the reason for the trip is a feature other than HR and PR, execute step (2).

[0081] Step (2) Check the third and seventh features of the wear characteristics. If the third or seventh feature is BC (Broken Cone), BF (Bond Failure), BT (broken teeth), CC (cracked cone), CD (Cone Dragged), CI (cone interference), CR (Cored), CT (chipped teeth), HC (heat checking), JD (junk damage), LC (lost cone), LT (lost teeth / cutters), NR (norerunnable), PB (pinched bit), RG (rounded gage), RO (ring out), SD (shirtail damage), TR (tracking), WO (washed out), bit, drill weld erosion), indicating that the drill bit has reached the end of its life and the wear index is r. If the third or seventh feature is BU (balled up bit, drill bit mud packing), ER (erosion, cutting teeth and matrix erosion), FC (flat crested wear, roller drill tooth top wear flat), LN (lost nozzles, lost nozzles), NO (no dull characteristic, no major wear characteristics), OW (offset center wear, eccentric wear), PN (plugged nozzle, plugged nozzle), RR (rurunnable, reusable), SS (self-sharpening wear, self-sharpening wear), WT (worm teeth / cutters, cutting tooth wear), it means that it is possible to be reused, and continue to step (3).

[0082] Step (3) checks the 6th and 4th features of the wear feature. If the feature is not I, it means that the drill diameter has been reduced, the drill life has expired, and the wear index is r. Otherwise, execute step (4).

[0083] Step (4) checks the bearing seal feature (5). If (5) is 8 or F, it means that the bearing seal is completely worn or damaged, the service life of the candidate drill bit has expired, and the wear index is r; otherwise, execute step (5).

[0084] Step (5) checks the wear level (1) of the inner row of teeth of the cutting structure and the wear level (2) of the outer row of teeth of the cutting structure. If the maximum value of (1) and (2) is ≥ the preset value p, it means that the wear of the cutting teeth is large, the service life of the candidate drill bit has expired, and the wear index is r; if (1) and (2) are 0, the wear index is 0.3r; if (1) and (2) are 1, the wear index is 0.618r; if (1) and (2) are 2, the wear index is 0.8r. In practical applications, p can be a value among 1, 2, 3, 4, 5, 6, 7 and 8, and can generally be 2 or 3. In some cases, different values ​​can be selected according to the complexity of drilling in the area where the candidate drill bit is used. For example, in wells with large depth, high cost and complex drilling, p can be selected as 1 or 2; in some shallow wells where drilling is relatively smooth, p can be selected as 4 or even higher. Optionally, r may be set to 1, or other values ​​may be selected as needed. For example, for ease of unification, r may be set to 10.

[0085] Figure 3 It is a flow chart of another drill bit screening method provided in an embodiment of the present invention. This embodiment is optimized based on the above-mentioned technical solutions. In this embodiment, optionally, after analyzing the wear index of the candidate drill bit according to the wear characteristics, the above-mentioned drill bit screening method also includes: determining the expected usage index of the candidate drill bit according to the wear index, and the characteristic parameters and / or usage parameters; screening out the target drill bit for drilling the section to be drilled from all the candidate drill bits according to the wear index of all the candidate drill bits corresponding to at least one neighboring area that has been drilled, including: screening out the target drill bit for drilling the section to be drilled from all the candidate drill bits according to the expected usage index of all the candidate drill bits corresponding to at least one neighboring area that has been drilled. Among them, the explanations of the terms that are the same or corresponding to the above-mentioned embodiments are not repeated here.

[0086] See also Figure 3 The method of this embodiment may specifically include the following steps:

[0087] S310, acquiring characteristic parameters of the well section to be drilled in the target well to be drilled.

[0088] S320. For each of at least one neighboring well that has been drilled corresponding to the target well to be drilled, determine a reference well section on the neighboring well according to the characteristic parameters, and determine usage parameters of a candidate drill bit of the historically drilled reference well section, wherein the usage parameters include at least wear characteristics.

[0089] S330: Analyze the wear index of the candidate drill bit according to the wear characteristics.

[0090] S340: Determine an expected usage index of the candidate drill bit according to the wear index, characteristic parameters and / or usage parameters.

[0091] Among them, the expected usage index of the candidate drill bit is determined based on the wear index and characteristic parameters, or based on the wear index and usage parameters, or based on the wear index, characteristic parameters and usage parameters, and the expected usage index can characterize the suitability of using the candidate drill bit as a target drill bit.

[0092] S350: Screen out a target drill bit for drilling the section to be drilled from all candidate drill bits according to the expected usage indexes of all candidate drill bits corresponding to at least one well already drilled in the adjacent area.

[0093] The technical solution of the embodiment of the present invention calculates the expected usage index through the wear index, characteristic parameters and / or usage parameters, and then screens the target drill bits according to the expected usage index. This can further improve the quality of the target drill bits screened out by considering multiple factors.

[0094] An optional technical solution, wherein the characteristic parameters include at least the planned drill bit usage and / or the total footage, and / or the usage parameters also include at least one of the actual footage, the actual rotation speed, and the formation adaptation data for the reference well section, and the expected usage index of the candidate drill bit is determined according to the wear index, the characteristic parameters and / or the usage parameters, including:

[0095] The expected usage index of the candidate drill bit is determined according to the wear index and at least one of the planned usage of the drill bit, the total footage, the formation adaptation data, the actual footage and the actual rotation speed.

[0096] The formation adaptability data can characterize the formation adaptability of the candidate drill bit for the reference well section. Generally, the better the formation adaptability, the higher the efficiency of the candidate drill bit. In practical applications, the formation adaptability data can be directly obtained or calculated based on certain usage parameters (such as actual drilling pressure, drill bit size, actual rotation speed, actual torque and mechanical drilling speed, etc.), which are not specifically limited here.

[0097] The above technical scheme can screen out target drill bits with high expected footage by fully considering the wear index; can screen out target drill bits with good formation adaptability (i.e., high efficiency) by fully considering the formation adaptability data; and can screen out target drill bits with high drilling speed by fully considering the actual rotation speed.

[0098] On this basis, optionally, at least one of the total footage and the wear index is positively correlated with the expected usage index; at least one of the planned drill bit usage, actual footage, actual rotation speed and formation adaptation data is negatively correlated with the expected usage index;

[0099] According to the expected usage indexes of all candidate drill bits corresponding to at least one well drilled in the adjacent area, a target drill bit for drilling the well section to be drilled is selected from all candidate drill bits, including:

[0100] For all candidate drill bits corresponding to the wells drilled in at least one neighboring area, the candidate drill bit with the smallest expected index among all the candidate drill bits is used as the target drill bit for drilling the section to be drilled.

[0101] The above technical solution can screen out target drill bits with fast drilling speed, high efficiency and high expected penetration.

[0102] In order to better understand the various technical solutions in the embodiments of the present invention as a whole, the following is an exemplary description of the technical solutions in combination with specific examples. For example, in actual drilling operations, the actual torque of the candidate drill bit is not easy to measure directly, and some drilling histories may not provide the actual torque. Therefore, in order to facilitate the calculation of the expected index BAR, two calculation methods are provided here:

[0103] Calculation method 1: When the actual torque is available, calculate BAR using the following formula:

[0104]

[0105] Where L is the total footage, which can be expressed in meters; n is the planned number of drill bits, which can be expressed in pieces; F i is the actual penetration of the ith candidate drill bit, in meters per bit; W i is the actual drilling pressure of the ith candidate drill bit, which can be expressed in kN; D bi is the drill bit size of the i-th candidate drill bit, which can be expressed in millimeters; N i is the actual speed of the i-th candidate drill bit, in revolutions per minute; T i is the actual torque of the i-th candidate drill bit, which can be expressed in kN·m; R i is the mechanical drilling speed of the i-th candidate drill bit, in meters per hour; r i is the wear index of the i-th candidate drill bit, dimensionless.

[0106] Calculation method 2: When the actual torque cannot be obtained, calculate BAR using the following formula:

[0107]

[0108] Through the above calculation method, the BAR of each candidate drill bit among all candidate drill bits can be calculated. On this basis, it can be seen from the analysis that the part in the brackets of the two formulas analyzes the energy of the candidate drill bit to break the formation rock, which can well reflect the adaptability of the candidate drill bit to the formation.

[0109] Figure 4This is a structural block diagram of a drill bit screening device provided in an embodiment of the present invention. The device is used to execute the drill bit screening method provided in any of the above embodiments. The device and the drill bit screening method in the above embodiments belong to the same inventive concept. For details not described in detail in the embodiment of the drill bit screening device, please refer to the embodiment of the above drill bit screening method. Figure 4 The device may specifically include: a characteristic parameter acquisition module 410 , a usage parameter determination module 420 , a wear index analysis module 430 and a target drill bit screening module 440 .

[0110] The characteristic parameter acquisition module 410 is used to acquire characteristic parameters of the well section to be drilled for the well section to be drilled on the target well;

[0111] A use parameter determination module 420 is used to determine, for each of the at least one neighboring well drilled corresponding to the target well to be drilled, a reference well section on the neighboring well according to the characteristic parameters, and determine the use parameters of the candidate drill bit of the historically drilled reference well section, wherein the use parameters at least include wear characteristics;

[0112] A wear index analysis module 430 is used to analyze the wear index of the candidate drill bit according to the wear characteristics;

[0113] The target drill bit screening module 440 is used to screen out a target drill bit for drilling the section to be drilled from all candidate drill bits according to the wear indexes of all candidate drill bits corresponding to at least one adjacent well that has been drilled.

[0114] Optionally, the wear characteristics at least include the drilling cause and the cutting structure passivation characteristics. The wear index analysis module 430 may include:

[0115] a wear index assigning unit, for checking the reason for starting drilling, and assigning a wear index corresponding to the expiration of the service life to the candidate drill bit when it is determined that the service life of the candidate drill bit has expired according to the reason for starting drilling;

[0116] The wear index analysis unit is used to check the blunting characteristics of the cutting structure and analyze the wear index of the candidate drill bit according to the blunting characteristics of the cutting structure.

[0117] On this basis, optionally, the wear characteristics may also include the wear position and / or diameter wear characteristics of the cutting structure, and the wear index analysis unit includes:

[0118] A wear index assigning subunit is used to assign a wear index corresponding to the expiration of the service life to the candidate drill bit when it is determined that the service life of the candidate drill bit has expired according to the blunting characteristics of the cutting structure;

[0119] The wear index analysis subunit is used for, otherwise, checking the wear position and / or diameter wear characteristics of the cutting structure, and analyzing the wear index of the candidate drill bit according to the wear position and / or diameter wear characteristics of the cutting structure.

[0120] Optionally, the drill bit screening device further comprises:

[0121] An expected usage index determination module is used to determine the expected usage index of the candidate drill bit according to the wear index, characteristic parameters and / or usage parameters after analyzing the wear index of the candidate drill bit according to the wear characteristics;

[0122] The target drill bit screening module 440 includes:

[0123] The target drill bit screening unit is used to screen out a target drill bit for drilling the section to be drilled from all candidate drill bits according to the expected usage indexes of all candidate drill bits corresponding to at least one well that has been drilled in an adjacent area.

[0124] On this basis, optionally, the characteristic parameters include at least the planned drilling amount and / or the total footage, and / or the usage parameters also include at least one of the actual footage, the actual rotation speed and the formation adaptation data for the reference well section;

[0125] Use the expected index to determine the module, including:

[0126] The expected usage index determination submodule is used to determine the expected usage index of the candidate drill bit according to the wear index and at least one of the planned usage of the drill bit, the total footage, the formation adaptation data, the actual footage and the actual rotation speed.

[0127] On this basis, optionally, the total footage and / or wear index are positively correlated with the usage expectation index;

[0128] At least one of the planned drill bit usage, actual footage, actual rotation speed, and formation adaptation data is negatively correlated with the usage expectation index;

[0129] Target drill bit screening unit, specifically for:

[0130] For all candidate drill bits corresponding to the wells drilled in at least one neighboring area, the candidate drill bit with the smallest expected index among all the candidate drill bits is used as the target drill bit for drilling the section to be drilled.

[0131] Optionally, the characteristic parameters include at least geological layering data, and the parameter determination module 420 includes:

[0132] A reference well section determination unit is used to determine, for all the drilled well sections in the neighboring area, a drilled well section that matches the geological stratification data among all the drilled well sections as a reference well section;

[0133] The characteristic parameters also include the wellbore size, and the use parameters also include the drill bit size. The drill bit screening device also includes:

[0134] The candidate drill bit updating module is used to eliminate the candidate drill bits whose drill bit sizes do not match the wellbore size from all the candidate drill bits according to the drill bit sizes of all the candidate drill bits before analyzing the wear index of the candidate drill bits according to the wear characteristics, and to update all the candidate drill bits after eliminating them.

[0135] The drill bit screening device provided by the embodiment of the present invention obtains characteristic parameters of the well section to be drilled on the target well to be drilled through a characteristic parameter acquisition module; determines the reference well section on the drilled well in the neighboring area according to the characteristic parameters for each of the drilled wells in the neighboring area corresponding to the target well to be drilled by using a parameter determination module, and determines the use parameters of the candidate drill bits of the historically drilled reference well section, wherein the use parameters at least include wear characteristics; analyzes the wear index of the candidate drill bits according to the wear characteristics through a wear index analysis module; and selects the target drill bit for drilling the well section to be drilled from all the candidate drill bits according to the wear index of all the candidate drill bits corresponding to at least one drilled well in the neighboring area through a target drill bit screening module. The above device achieves the effect of screening out the target drill bit with high expected footage by considering the influence of drill bit wear.

[0136] The drill bit screening device provided in the embodiment of the present invention can execute the drill bit screening method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0137] It is worth noting that in the embodiment of the above-mentioned drill bit screening device, the various units and modules included are only divided according to functional logic, but are not limited to the above-mentioned division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present invention.

[0138] Figure 5 A schematic diagram of the structure of an electronic device 10 that can be used to implement an embodiment of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0139] like Figure 5As shown, the electronic device 10 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0140] A number of components in the electronic device 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0141] The processor 11 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as a drill bit screening method.

[0142] In some embodiments, the drill bit screening method may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the drill bit screening method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the drill bit screening method in any other appropriate manner (e.g., by means of firmware).

[0143] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0144] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine as a stand-alone software package and partially on a remote machine, or entirely on a remote machine or server.

[0145] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0146] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0147] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0148] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0149] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0150] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A drill bit screening method, characterized in that: include: For a well section to be drilled in a target well to be drilled, obtaining characteristic parameters of the well section to be drilled; For each of at least one neighboring well drilled in the neighboring area corresponding to the target well to be drilled, determine a reference well section on the neighboring well drilled according to the characteristic parameters, and determine a usage parameter of a candidate drill bit that has historically drilled the reference well section, wherein the usage parameter at least includes a wear characteristic; Analyzing a wear index of the candidate drill bit according to the wear characteristics; According to the wear indexes of all candidate drill bits corresponding to the at least one adjacent well that has been drilled, a target drill bit for drilling the well section to be drilled is selected from all the candidate drill bits.

2. The method according to claim 1, characterized in that The wear characteristics at least include the cause of drilling and the blunting characteristics of the cutting structure; The step of analyzing the wear index of the candidate drill bit according to the wear characteristics comprises: checking the reason for starting drilling, and if it is determined that the service life of the candidate drill bit has expired according to the reason for starting drilling, assigning a wear index corresponding to the expiration of the service life to the candidate drill bit; Otherwise, the cutting structure dullness feature is checked, and the wear index of the candidate drill bit is analyzed according to the cutting structure dullness feature.

3. The method according to claim 2, characterized in that The wear characteristics also include cutting structure wear position and / or diameter wear characteristics; The step of analyzing the wear index of the candidate drill bit according to the blunting characteristics of the cutting structure includes: When it is determined according to the cutting structure passivation feature that the service life of the candidate drill bit has expired, assigning a wear index corresponding to the expiration of the service life to the candidate drill bit; Otherwise, the cutting structure wear position and / or the diameter wear feature are checked, and the wear index of the candidate drill bit is analyzed according to the cutting structure wear position and / or the diameter wear feature.

4. The method according to claim 1, characterized in that: After analyzing the wear index of the candidate drill bit according to the wear characteristics, the method further includes: Determine an expected usage index of the candidate drill bit according to the wear index, the characteristic parameter and / or the usage parameter; The step of selecting a target drill bit for drilling the well section to be drilled from all candidate drill bits according to the wear indexes of all candidate drill bits corresponding to the at least one neighboring well that has been drilled comprises: According to the expected usage indexes of all candidate drill bits corresponding to the at least one neighboring well that has been drilled, a target drill bit for drilling the section to be drilled is selected from all the candidate drill bits.

5. The method according to claim 4, characterized in that The characteristic parameters include at least the planned drilling amount and / or the total footage, and / or the usage parameters also include at least one of the actual footage, the actual rotation speed and the formation adaptation data for the reference well section; Determining the expected usage index of the candidate drill bit according to the wear index, the characteristic parameter and / or the usage parameter includes: An expected usage index of the candidate drill bit is determined based on the wear index and at least one of the planned drill bit usage, the total footage, the formation adaptation data, the actual footage and the actual rotation speed.

6. The method according to claim 5, characterized in that At least one of the total footage and the wear index is positively correlated with the usage expectation index; At least one of the planned drill bit usage, the actual footage, the actual rotation speed and the formation adaptation data is negatively correlated with the usage expectation index; The step of selecting a target drill bit for drilling the section to be drilled from all candidate drill bits according to the expected usage indexes of all candidate drill bits corresponding to the at least one neighboring well that has been drilled comprises: For all candidate drill bits corresponding to the at least one neighboring area where the well has been drilled, the candidate drill bit with the smallest expected index among all the candidate drill bits is used as the target drill bit for drilling the section to be drilled.

7. The method according to claim 1, characterized in that The characteristic parameters at least include geological stratification data, and determining the reference well section of the drilled well in the neighboring area according to the characteristic parameters includes: For all the drilled well sections of the drilled wells in the neighboring area, the drilled well sections among all the drilled well sections that match the geological stratification data are used as reference well sections; The characteristic parameter further includes the wellbore size, the usage parameter further includes the drill bit size, and before analyzing the wear index of the candidate drill bit according to the wear characteristic, the method further includes: According to the drill bit sizes of all the candidate drill bits, candidate drill bits whose drill bit sizes do not match the wellbore size are eliminated from all the candidate drill bits, and all the candidate drill bits are updated after being eliminated.

8. A drill bit screening device, characterized in that: include: A characteristic parameter acquisition module, for acquiring characteristic parameters of a well section to be drilled in a target well to be drilled; A usage parameter determination module is used to determine, for each of the at least one neighboring well drilled corresponding to the target well to be drilled, a reference well section on the neighboring well according to the characteristic parameters, and determine usage parameters of a candidate drill bit that has historically drilled the reference well section, wherein the usage parameters at least include wear characteristics; A wear index analysis module, used for analyzing the wear index of the candidate drill bit according to the wear characteristics; The target drill bit screening module is used to screen out a target drill bit for drilling the section to be drilled from all candidate drill bits according to the wear indexes of all candidate drill bits corresponding to the at least one adjacent area that has been drilled.

9. An electronic device, characterized in that: include: at least one processor; as well as a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to perform the drill bit screening method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the drill bit screening method according to any one of claims 1 to 7 when executed.

Images