CN113818871A - Drilling parameter determination method, device and equipment - Google Patents
Drilling parameter determination method, device and equipment Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 43
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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
- E21B49/003—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 by analysing 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
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
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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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
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Abstract
The embodiment of the application provides a method, a device and equipment for determining drilling parameters, wherein the method comprises the following steps: determining a target bit pressure, wherein the target bit pressure is less than or equal to a preset rated bit pressure; determining a target rotating speed according to the target bit pressure and a preset rotating speed interval, wherein the sudden change of the equivalent resultant stress corresponding to the target rotating speed is minimum in the preset rotating speed interval; determining the area of a target nozzle according to the area of the nozzle of the drill bit to be selected; and determining the target displacement according to the target nozzle area and the drilling fluid density. The efficiency of well drilling is improved.
Description
Technical Field
The application relates to the technical field of petroleum drilling and production engineering, in particular to a method, a device and equipment for determining drilling parameters.
Background
With the rapid development of oil field exploration and development, the development of drilling technology faces many challenges. With the increasing depth of oil exploration and development in recent years, the depth of a drilled well is increased, and how to effectively utilize the limited performance of a drill bit becomes more and more important.
At present, drilling parameters are generally low, for example, the drilling parameters before a garage is mountain are mainly distributed to the drilling pressure of 60-180kN, the rotating speed of 80-100rpm, the pumping pressure of 15-24MPa and the discharge capacity of 35-60L/s, and the drilling parameters cannot fully exert the performances of a drill bit, a speed-up tool and a drilling pump. When the drilling depth is deep, if the drilling parameters are adopted for drilling, the drilling construction period is long, and the drilling efficiency is low.
Disclosure of Invention
The application provides a drilling parameter determination method, a drilling parameter determination device and drilling parameter determination equipment. The efficiency of well drilling is improved.
In a first aspect, embodiments of the present application provide a method for determining drilling parameters, the method comprising:
determining a target bit pressure, wherein the target bit pressure is less than or equal to a preset rated bit pressure;
determining a target rotating speed according to the target bit pressure and a preset rotating speed interval, wherein the sudden change of the equivalent resultant stress corresponding to the target rotating speed is minimum in the preset rotating speed interval;
determining the area of a target nozzle according to the area of the nozzle of the drill bit to be selected;
and determining the target discharge capacity according to the target nozzle area, the drilling fluid density and the preset discharge capacity interval.
In a possible embodiment, determining the target rotation speed according to the target weight on bit and a preset rotation speed interval includes:
determining a first rotating speed interval in the preset rotating speed interval, wherein equivalent total stress corresponding to the rotating speed in the first rotating speed interval is smaller than or equal to a first threshold;
and determining the target rotating speed according to the rotating speed with the minimum sudden change of the corresponding equivalent resultant stress in the first rotating speed interval.
In one possible embodiment, determining a first speed interval in the preset speed interval comprises:
determining equivalent total stress corresponding to each rotating speed in the preset rotating speed interval according to the target bit pressure;
and determining the first rotating speed interval according to the equivalent total stress corresponding to each rotating speed in the preset rotating speed interval and the first threshold, wherein the equivalent total stress corresponding to the rotating speed in the first rotating speed interval is less than or equal to the first threshold.
In one possible embodiment, determining a target weight-on-bit comprises:
acquiring stratum characteristics and fatigue parameters of a drilling tool, wherein the stratum characteristics are soft stratum or hard stratum, and the fatigue parameters comprise fatigue coefficient and torsional strength;
and determining the target weight-on-bit according to the formation characteristic and the fatigue parameter.
In one possible embodiment, determining a target displacement based on the target nozzle area and drilling fluid density comprises:
determining specific water power according to the target nozzle area, the drilling fluid density and a preset displacement interval;
determining jet impact force according to the target nozzle area, the drilling fluid density and a preset displacement interval;
and determining the target displacement according to the specific water power and the jet impact force.
In one possible embodiment, determining the target displacement from the specific water power and the jet impact force comprises:
acquiring a first functional relation between specific water power and displacement;
acquiring a second functional relation between jet impact force and displacement;
and determining the target displacement according to the first functional relation and the second functional relation.
In a second aspect, embodiments of the present invention provide a drilling parameter determination apparatus, comprising a first determination module, a second determination module, a third determination module, and a fourth determination module, wherein:
the first determination module is used for determining a target bit pressure, wherein the target bit pressure is less than or equal to a preset rated bit pressure;
the second determining module is used for determining a target rotating speed according to the target bit pressure and a preset rotating speed interval, wherein the sudden change of the equivalent total stress corresponding to the target rotating speed is minimum in the preset rotating speed interval;
the third determining module is used for determining the area of a target nozzle according to the area of the nozzle of the drill bit to be selected;
the fourth determination module is used for determining the target displacement according to the target nozzle area, the drilling fluid density and the preset displacement interval.
In a possible implementation manner, the second determining module is specifically configured to:
determining a first rotating speed interval in the preset rotating speed interval, wherein equivalent total stress corresponding to the rotating speed in the first rotating speed interval is smaller than or equal to a first threshold;
and determining the target rotating speed according to the rotating speed with the minimum sudden change of the corresponding equivalent resultant stress in the first rotating speed interval.
In a possible implementation manner, the second determining module is specifically configured to:
determining equivalent total stress corresponding to each rotating speed in the preset rotating speed interval according to the target bit pressure;
and determining the first rotating speed interval according to the equivalent total stress corresponding to each rotating speed in the preset rotating speed interval and the first threshold, wherein the equivalent total stress corresponding to the rotating speed in the first rotating speed interval is less than or equal to the first threshold.
In a possible implementation manner, the first determining module is specifically configured to:
acquiring stratum characteristics and fatigue parameters of a drilling tool, wherein the stratum characteristics are soft stratum or hard stratum, and the fatigue parameters comprise fatigue coefficient and torsional strength;
and determining the target weight-on-bit according to the formation characteristic and the fatigue parameter.
In a possible implementation manner, the fourth determining module is specifically configured to:
determining specific water power according to the target nozzle area, the drilling fluid density and a preset displacement interval;
determining jet impact force according to the target nozzle area, the drilling fluid density and a preset displacement interval;
and determining the target displacement according to the specific water power and the jet impact force.
In a possible implementation manner, the fourth determining module is specifically configured to:
acquiring a first functional relation between specific water power and displacement;
acquiring a second functional relation between jet impact force and displacement;
and determining the target displacement according to the first functional relation and the second functional relation.
In a third aspect, embodiments of the present invention provide a drilling parameter determination apparatus, comprising: a processor coupled with a memory;
the memory is used for storing a computer program;
the processor is configured to execute a computer program stored in the memory to cause the drilling parameter determination apparatus to perform the method of any of the first aspects described above.
In a fourth aspect, an embodiment of the present invention provides a readable storage medium, which includes a program or instructions, and when the program or instructions are run on a computer, the method according to any one of the first aspect is performed.
According to the drilling parameter determining method, the drilling parameter determining device and the drilling parameter determining equipment, the target bit pressure is determined according to the stratum characteristics and the fatigue parameters of the drilling tool in the preset rated bit pressure range, the target rotating speed is determined according to the target bit pressure and the preset rotating speed interval, and the sudden change of the equivalent resultant stress corresponding to the target rotating speed is minimum. And determining a target nozzle area according to the nozzle area of the drill bit to be selected, and determining a target displacement according to the target nozzle area, the drilling fluid density and a preset displacement interval. In the process, because the sudden change of the equivalent resultant stress corresponding to the target rotating speed is minimum, the rotating speed is stable, and when the target discharge capacity is determined, the influence of the specific water power and the jet impact force on the discharge capacity is combined, the optimal target discharge capacity can be obtained, and the drilling efficiency is improved.
Drawings
Fig. 1 is a schematic diagram of an application scenario provided in an embodiment of the present application;
FIG. 2 is a schematic flow chart of a method for determining drilling parameters provided by an embodiment of the present application;
FIG. 3 is a schematic diagram of determining a target rotational speed according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of determining a target displacement provided by an embodiment of the present application;
FIG. 5 is a schematic structural diagram of a drilling parameter determination apparatus according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a drilling parameter determination apparatus according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
For ease of understanding, an application scenario to which the present application is applicable is described below with reference to fig. 1.
Fig. 1 is a schematic diagram of an application scenario provided in an embodiment of the present application. See fig. 1, including drilling tools, wells, surface and subsurface 2000 meters. The drilling tool can comprise a speed-up tool and a drill bit, the speed-up tool can accelerate the rotating speed of the drill bit and accelerate the drill bit to reach for oil field exploitation, and the drilling tool can be used for oil exploration and development of Tarim oil fields. The drilling may be performed by a drilling tool to produce a borehole, as shown in fig. 1, which may be deployed from the surface to extend 2000 meters into the ground to form a borehole. The drilling parameters may be set by electronic means before the drilling tool is in operation. For example, the electronic device includes a computer, a portable device, a smart device, etc., the drilling parameters include bit pressure, rotation speed, pump pressure, displacement, etc., and the drilling parameters may be set by the computer. The drill bit operates according to the set drilling parameters and moves towards the bottom of the borehole under the effect of the weight on bit, thereby breaking the rock at the bottom of the borehole. By reasonably setting drilling parameters, the drilling speed and the drill bit footage can be improved.
In the process of determining the drilling parameters, the target bit pressure can be determined within the rated bit pressure range, and the rotating speed with the minimum equivalent resultant stress mutation is selected as the target rotating speed in the preset rotating speed interval. And determining the target nozzle area according to the nozzle area of the drill bit to be selected, and determining the target displacement according to the target nozzle area, the drilling fluid density and the preset displacement interval. In the process, the bit pressure is determined in a rated range, the characteristic that the equivalent resultant stress mutation is minimum is combined, the safety of the drill bit can be improved, the stability of the drill bit can be improved, meanwhile, the optimal discharge capacity can be determined to be the target discharge capacity by combining the target nozzle area, the density of the drilling fluid and the preset discharge capacity interval, the drilling speed and the drill bit footage are improved, and therefore the drilling efficiency is improved.
It should be noted that fig. 1 illustrates a possible application scenario by way of example only, and does not limit the application scenario. For example, in the application scenario described above, the mining of metal ores and natural gas fields may also be included.
The technical means shown in the present application will be described in detail below with reference to specific examples. It should be noted that the following embodiments may be combined with each other, and the description of the same or similar contents in different embodiments is not repeated.
Fig. 2 is a schematic flow chart of a drilling parameter determination method according to an embodiment of the present disclosure. Referring to fig. 2, the method may include:
s201, determining a target bit pressure, wherein the target bit pressure is less than or equal to a preset rated bit pressure.
The execution main body of the embodiment of the invention can be electronic equipment, and can also be a drilling parameter determination device arranged in the electronic equipment. Optionally, the electronic device may be a mobile phone, a computer, an intelligent bracelet, or the like. Alternatively, the drilling parameter determination means may be implemented by software, or by a combination of software and hardware.
The rated weight on bit may be determined by the maximum bit capacity provided by the drill bit manufacturer. For example, the maximum bearing capacity of the drill bit is 24 tons, and the rated weight on bit is 24 tons. Optionally, the maximum bearing capacity of the drill bit can be determined according to the experimental data of drilling parameters at home and abroad. Alternatively, the nominal weight-on-bit may be determined from the maximum withstand pressure of the well. For example, the maximum withstand pressure of the drilled well may be 20 tons, and if the weight on bit exceeds 20 tons, the drill bit may be damaged, and the rated weight on bit should be less than the maximum withstand pressure of the drilled well.
The target weight-on-bit may be a weight-on-bit within a nominal weight-on-bit range. For example, a Tarim oilfield drilling may be rated at a weight-on-bit of 20 tons, and the target weight-on-bit may be 12 tons.
Alternatively, the target weight-on-bit may be determined according to the following: determined from the formation properties and the fatigue parameters. For example, when the formation characteristic is a hard formation, the drill bit is damaged due to overlarge drilling pressure, at this time, a lower drilling pressure is selected as a target drilling pressure, and when the formation characteristic is a soft formation, a higher drilling pressure can be selected as a target drilling pressure, so that the drilling speed of the drill bit is increased, and meanwhile, fatigue analysis can be performed on the drilling tool by combining fatigue parameters to ensure that the target drilling pressure with high safety is selected.
Wherein the formation is the formation in which the well is drilled. For example, Tarim oil field wells are distributed in formations averaging 6500 meters above salt. The formation property may be a soft formation or a hard formation. For example, petroleum is usually stored in sedimentary rock, while the sedimentary rock of Tarim usually has a thick saline stratum distributed thereon and has high hardness, and the hard stratum is hard stratum, and the upper layer of the hard stratum is usually covered with loose stratum such as mud layer and sand layer, and the hard stratum is soft stratum. Optionally, the characteristics of the formation where the drilling well is located may be obtained in a geological measurement manner, or may be obtained according to a mined drilling well.
The fatigue parameter may be indicative of a degree of fatigue of the drilling tool. The drilling tool may be subjected to a fatigue analysis in combination with a fatigue parameter, which may include the drill bit and the acceleration tool, which may cause the drilling tool to break when the fatigue parameter is greater than a preset threshold. Alternatively, fatigue analysis of the drilling tool can be performed using ANSYS FE-SAFE.
Alternatively, the fatigue parameters may include a fatigue coefficient and a torsional strength.
The fatigue coefficient may be a measure of the useful life of the material and may be used to indicate the degree of damage to the material. For example, drill bits may experience a slight amount of damage after each stress event, and when the damage accumulates to a certain extent, the end of the useful life of the drill bit is reached, causing the drill bit to break.
Alternatively, a fatigue coefficient of the drill tool of less than or equal to 0.7 may be used as a criterion for determining the target weight on bit. The fatigue coefficient of the drilling tool can be obtained through an experimental calculation method.
Torsional strength refers to the maximum shear stress for maximum torque, and is used to indicate the stress to resist torsional failure. For example, if the torsional strength of the drill is 100kn.m and the maximum torque of the drill is greater than 100kn.m, the drill will break.
Alternatively, after the material or structure is subjected to repeated load changes, failure may occur if the stress value, although not always exceeding the strength limit of the material, is even lower than the maximum torque, and therefore, it is possible to use a drill torque capacity of less than or equal to 80% of the torsional strength as a criterion for determining the target weight on bit. The torsional strength of the drilling tool can be calculated according to the diameter of the drilling tool.
S202, determining a target rotating speed according to the target bit pressure and a preset rotating speed interval, wherein the sudden change of the equivalent resultant stress corresponding to the target rotating speed is minimum in the preset rotating speed interval.
The equivalent resultant stress may refer to the resultant of the stresses experienced by the drilling tool. For example, the drilling tool is subjected to stresses such as axial forces, bending forces and torque effects while working in the borehole, the resultant of these stresses being equivalent to the resultant stress. Alternatively, the equivalent resultant stress may be determined according to the following: and determining according to the target bit pressure and a preset rotating speed interval. For example, the target weight on bit and the preset rotation speed interval may be input into the wellplan software, and then the equivalent weight and the stress corresponding to each rotation speed in the preset rotation speed interval may be obtained.
The preset rotation speed interval may be a pre-selected rotation speed range. For example, the user may select a rotation speed range of 80/rpm to 130/rpm as the preset rotation speed interval. Optionally, the maximum value of the preset rotation speed interval is less than or equal to the rated rotation speed. The rated rotation speed may be the maximum rotation speed of the drilling tool, for example, the maximum rotation speed of the drilling tool may be 150/rpm, and the rated rotation speed may be 150/rpm.
Optionally, the maximum rotation speed of the drilling tool may be determined according to a service provider of a research drilling tool manufacturer, or may be determined according to drilling parameter experimental data at home and abroad.
The target rotation speed may be a rotation speed at which the corresponding sudden change in the equivalent resultant stress is minimum in a preset rotation speed interval. The equivalent and stress abrupt change is minimum, namely the equivalent and stress change amplitude corresponding to two rotating speeds is minimum. For example, in the preset rotation speed interval, the equivalent total stress borne by the rotation speed 80/rpm is 3MPa, the equivalent total stress borne by the rotation speed 90/rpm is 3.1MPa, and the mutation of the equivalent total stress between the rotation speeds 80/rpm and 90/rpm is minimum, so that the target rotation speed can be determined to be the rotation speed 80/rpm.
Next, referring to fig. 3, a process of determining the target rotation speed according to the embodiment of the present invention will be described in detail by way of specific examples.
Fig. 3 is a schematic diagram of determining a target rotation speed according to an embodiment of the present application. Referring to fig. 3, the horizontal axis represents the rotation speed, the vertical axis represents the equivalent total stress, the curve 31 represents the relationship between the rotation speed and the equivalent total stress at a weight on bit of 18 tons, and the curve 32 represents the relationship between the rotation speed and the equivalent total stress at a weight on bit of 20 tons.
In fig. 3, the rotation speeds corresponding to the minimum equivalent total stress jump of different target weight bits are different, when the target weight bit is 18 tons, the equivalent total stress jump of the rotation speed 105/rpm is minimum, and when the target weight bit is 20 tons, the equivalent total stress jump and the stress jump of the rotation speed 97/rpm are minimum.
When the target bit pressure is 18 tons, the equivalent resultant stress mutation of the rotating speed 105/rpm is minimum, but the rotating speed is higher and the equivalent resultant stress is higher, so that the drilling tool is easy to damage. Optionally, a first rotation speed interval may be determined in the preset rotation speed interval, and a rotation speed corresponding to the minimum equivalent resultant stress sudden change is selected as the target rotation speed in the first rotation speed interval.
Alternatively, the first speed interval may be determined in the preset speed interval by the following feasible implementation manners: and according to the target bit pressure and each rotating speed in the preset rotating speed interval, calculating to obtain equivalent total stress corresponding to each rotating speed in the preset rotating speed interval, and determining the corresponding rotating speed set as a first rotating speed interval when the equivalent total stress is less than or equal to a first threshold value. For example, as shown in fig. 3, the first threshold is 6/MPa, and the set of rotation speeds corresponding to the equivalent total stress of 6MPa or less may be a first rotation speed interval of 60/rpm to 100/rpm.
Alternatively, the rotation speed at which the corresponding sudden change in the equivalent resultant stress is minimum in the first rotation speed interval may be determined as the target rotation speed. For example, as shown in fig. 3, when the target weight on bit is 18 tons, if the first rotation speed interval is 60/rpm to 100/rpm, it may be determined that the equivalent resultant stress jump corresponding to the rotation speed of 97/rpm is minimum, and at this time, 97/rpm may be determined as the target rotation speed. The equivalent resultant stress corresponding to the determined target rotating speed is small and the sudden change is minimum, so that the stability of the drilling tool can be improved.
And S203, determining the area of a target nozzle according to the area of the nozzle of the drill bit to be selected.
The nozzle area of the drill bit may refer to the area of each nozzle of the drill bit, and the drill bit may be provided with a plurality of nozzles. Wherein, the nozzle of drill bit can be the nozzle of drill bit water hole department installation, can dismantle used repeatedly. For example, the nozzle area of the same drill bit may be 0.5 square centimeters, or may be replaced with 0.8 square centimeters. Alternatively, the nozzle area of the drill bit to be selected may be determined at the service manufacturer of the drill bit.
The target nozzle area may be the sum of the areas of the nozzle areas of the drill bit. For example, the nozzle area of the drill is 0.5 square centimeters, and the drill has 7 nozzles, with the target nozzle area being 3.5 square centimeters. Alternatively, the target nozzle area may be determined by the following possible implementations: and determining according to the nozzle area of the drill bit to be selected. For example, the nozzle area of the drill bit to be selected is 0.5 square centimeter and 0.7 square centimeter, and the drill bit has 7 nozzles, and the target nozzle area can be 3.5 square centimeter and 4.9 square centimeter.
And S204, determining the target displacement according to the target nozzle area, the drilling fluid density and the preset displacement interval.
The drilling fluid density refers to the mass of the drilling fluid per unit volume, wherein the drilling fluid can be a general term for various circulating fluids meeting the requirements of drilling work in multiple functions during the drilling process. For example, the drilling fluid may include clear water, mud, clay-free flushing fluids, emulsions, foams, compressed air, and the like.
Alternatively, the density of the drilling fluid may be measured using a densitometer, or may be determined from the adjacent well. For example, the drilling fluid density for an adjacent well at a depth of 1000 meters is 1.15g/cm3, and the drilling fluid density for a currently drilled well at a depth of 1000 meters may be 1.15g/cm 3.
The preset displacement interval may be a preselected displacement range. Alternatively, the preset displacement interval may be determined in the following feasible manner: the minimum value in the preset displacement interval is the minimum rock-carrying displacement, and the maximum value in the displacement interval is the rated displacement. The rated displacement may be the maximum displacement of the drill pump. For example, the maximum displacement of the borehole pump may be 90L/s, and the nominal displacement may be 90L/s. Optionally, the maximum displacement of the borehole pump may be determined according to a service provider of a borehole pump manufacturer in research, or may be determined according to experimental data of drilling parameters at home and abroad.
The rock-carrying displacement can be the displacement of the drilling fluid carrying rock debris. For example, cuttings produced during operation of the drill bit need to be carried to the surface by the drilling fluid circulation system to ensure the cleanliness of the borehole. The minimum rock-carrying displacement may be a rock-carrying displacement that ensures wellbore cleaning. For example, when the drilling depth is 1000 m, the minimum carrying capacity can be 46.5L/s, and the minimum value of the preset capacity interval needs to be greater than 46.5L/s.
The target displacement may be a displacement during drilling operation within a preset displacement interval. For example, if the preset displacement interval is 40L/s-100L/s, the target displacement may be 50L/s, 60L/s, or 80L/s. Alternatively, the target displacement may be determined according to the following: and determining according to the specific water power and the jet impact force.
Specific hydraulic power may refer to the hydraulic power consumed by the drilling fluid as it flows through the drill bit. Specific water power can be determined according to the target nozzle area, the drilling fluid density and a preset displacement interval, and can be calculated according to the following formula:
wherein N iscIs the specific water power of the drill bit; ρ is the drilling fluid density; q is the displacement in the preset displacement interval; c is that the nozzle flow coefficient is 0.98; a is the target nozzle area; d is the bit diameter.
The jet impact force can be the resultant force acted on the bottom of the well after the jet impacts the bottom of the well, and the larger the jet impact force is, the better the effect of cleaning the bottom of the well is. The jet impact force can be determined according to the target nozzle area, the drilling fluid density and the preset displacement interval, and can be calculated according to the following formula:
wherein F is the jet impact force and ρ is the drilling fluid density; q is the displacement in the preset displacement interval; and a is the target nozzle area.
Alternatively, the target displacement may be determined from the specific water power and jet impact force by the following feasible implementation: and obtaining a first functional relation between specific water power and discharge capacity, obtaining a second functional relation between jet impact force and discharge capacity, and determining the target discharge capacity according to the first functional relation and the second functional relation.
The following describes, by way of specific example, a process of determining a target displacement according to an embodiment of the present invention with reference to fig. 4.
Fig. 4 is a schematic diagram of determining a target displacement according to an embodiment of the present application. Referring to fig. 4, the left vertical axis represents specific water power, the right vertical axis represents jet impact force, and the horizontal axis represents displacement. The curve 41 is a first functional relation between specific water power and displacement, the curve 42 is a second functional relation between jet impact force and displacement, and the target displacement can be determined according to the first functional relation and the second functional relation. Alternatively, the intersection of the curve 41 and the curve 42 may be determined as the target displacement. The intersection of the curve 41 and the curve 42 in fig. 4 is 55L/s, and the target displacement may be determined to be 55L/s. Alternatively, the displacement within the preset interval range of the intersection point may be determined as the target displacement. For example, in FIG. 4, the target displacement may be determined to be 55L/s or 58L/s according to the intersection of the curve 41 and the curve 42.
Alternatively, the target displacement may be determined from the specific water power. For example, the displacement corresponding to the maximum specific water power is 48L/s, and the target displacement is 48L/s.
Alternatively, the target displacement may be determined from the jet impact force. For example, the maximum jet impact force corresponds to a displacement of 62L/s, and the target displacement is 62L/s.
According to the drilling parameter determination method, the deep area and the dena area of the Tarim oil field are tested, and when the drilling parameter determination method is not adopted, the average machine speed of the thick stratum on the salt in the deep area is 3.46m/h, the single advancing rod is 378m, the average machine speed of the stratum on the salt in the dena area is 5.40m/h, and the single advancing rod is 988 m. After the drilling parameter determination method is adopted, the average machine speed of a thick stratum on salt in a deep region is 5.11m/h and is increased by 48%, and a single drill bit is advanced by 500m and is increased by 32%; the average speed of the salt upper strata of the dina region is 8.54m/h and is improved by 58 percent, and the single drill head advances by 1420m and is improved by 43 percent.
According to the drilling parameter determining method, the drilling parameter determining device and the drilling parameter determining equipment, the target bit pressure is determined according to the stratum characteristics and the fatigue parameters of the drilling tool within the preset rated bit pressure range, the safety of the drilling tool can be improved, and the target rotating speed is determined according to the target bit pressure and the preset rotating speed interval, wherein the sudden change of equivalent resultant stress corresponding to the target rotating speed is minimum, the drill bit footage can be accelerated, and the stability of the drilling tool is improved. The target nozzle area is determined according to the nozzle area of the drill bit to be selected, the target discharge capacity is determined according to the target nozzle area, the drilling fluid density and the preset discharge capacity interval, the influence of the specific water power and the jet impact force on the discharge capacity is combined, the optimal target discharge capacity can be obtained, and the drilling efficiency is improved.
Fig. 5 is a schematic structural diagram of a drilling parameter determination apparatus according to an embodiment of the present application. The drilling parameter determination apparatus 10 may be provided in a terminal device. Referring to fig. 5, the drilling parameter determination apparatus 10 includes a first determination module 11, a second determination module 12, a third determination module 13, and a fourth determination module 14, wherein:
the first determining module 11 is configured to determine a target weight-on-bit, where the target weight-on-bit is less than or equal to a preset rated weight-on-bit;
the second determining module 12 is configured to determine a target rotation speed according to the target weight on bit and a preset rotation speed interval, where a sudden change of the equivalent total stress corresponding to the target rotation speed is minimum in the preset rotation speed interval;
the third determining module 13 is configured to determine a target nozzle area according to a nozzle area of the drill bit to be selected;
the fourth determining module 14 is configured to determine a target displacement according to the target nozzle area, the drilling fluid density, and a preset displacement interval.
In a possible implementation, the second determining module 12 is specifically configured to:
determining a first rotating speed interval in the preset rotating speed interval, wherein equivalent total stress corresponding to the rotating speed in the first rotating speed interval is smaller than or equal to a first threshold;
and determining the target rotating speed according to the rotating speed with the minimum sudden change of the corresponding equivalent resultant stress in the first rotating speed interval.
In a possible implementation, the second determining module 12 is specifically configured to:
determining equivalent total stress corresponding to each rotating speed in the preset rotating speed interval according to the target bit pressure;
and determining the first rotating speed interval according to the equivalent total stress corresponding to each rotating speed in the preset rotating speed interval and the first threshold, wherein the equivalent total stress corresponding to the rotating speed in the first rotating speed interval is less than or equal to the first threshold.
In a possible implementation, the first determining module 11 is specifically configured to:
acquiring stratum characteristics and fatigue parameters of a drilling tool, wherein the stratum characteristics are soft stratum or hard stratum, and the fatigue parameters comprise fatigue coefficient and torsional strength;
and determining the target weight-on-bit according to the formation characteristic and the fatigue parameter.
In a possible implementation, the fourth determining module 14 is specifically configured to:
determining specific water power according to the target nozzle area, the drilling fluid density and a preset displacement interval;
determining jet impact force according to the target nozzle area, the drilling fluid density and a preset displacement interval;
and determining the target displacement according to the specific water power and the jet impact force.
In a possible implementation, the fourth determining module 14 is specifically configured to:
acquiring a first functional relation between specific water power and displacement;
acquiring a second functional relation between jet impact force and displacement;
and determining the target displacement according to the first functional relation and the second functional relation.
The frequency adjustment apparatus provided in the embodiment of the present application can implement the technical solutions shown in the above method embodiments, and the implementation principles and beneficial effects thereof are similar, and are not described herein again.
Fig. 6 is a schematic structural diagram of a drilling parameter determination apparatus according to an embodiment of the present application. Referring to fig. 6, the drilling parameter determination device 20 may include: a transceiver 21, a memory 22, a processor 23. The transceiver 21 may include: a transmitter and/or a receiver. The transmitter may also be referred to as a sender, a transmitter, a sending port or a sending interface, and the like, and the receiver may also be referred to as a receiver, a receiving port or a receiving interface, and the like. Illustratively, the transceiver 21, the memory 22, and the processor 23 are connected to each other by a bus 24.
The memory 22 is used for storing program instructions;
Wherein the receiver of the transceiver 21 is operable to perform the receiving function of the drilling parameter determination device in the above-described communication method.
Embodiments of the present application provide a computer-readable storage medium having stored therein computer-executable instructions for implementing the above-described drilling parameter determination method when executed by a processor.
Embodiments of the present application may also provide a computer program product, which may be executed by a processor, and when executed, may implement a drilling parameter determination method performed by any of the drilling parameter determination devices shown above.
The drilling parameter determination device, the computer-readable storage medium, and the computer program product according to the embodiments of the present application may execute the communication method executed by the drilling parameter determination device, and specific implementation processes and beneficial effects thereof are described above and will not be described herein again.
All or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The aforementioned program may be stored in a readable memory. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned memory (storage medium) includes: read-only memory (ROM), RAM, flash memory, hard disk, solid state disk, magnetic tape (magnetic tape), floppy disk (flexible disk), optical disk (optical disk), and any combination thereof.
Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processing unit of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processing unit of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to encompass such modifications and variations.
In the present application, the terms "include" and variations thereof may refer to non-limiting inclusions; the term "or" and variations thereof may mean "and/or". The terms "first," "second," and the like in this application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. In the present application, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
Claims (14)
1. A method of determining drilling parameters, comprising:
determining a target bit pressure, wherein the target bit pressure is less than or equal to a preset rated bit pressure;
determining a target rotating speed according to the target bit pressure and a preset rotating speed interval, wherein the sudden change of the equivalent resultant stress corresponding to the target rotating speed is minimum in the preset rotating speed interval;
determining the area of a target nozzle according to the area of the nozzle of the drill bit to be selected;
and determining the target discharge capacity according to the target nozzle area, the drilling fluid density and the preset discharge capacity interval.
2. The method of claim 1, wherein determining a target rotational speed based on the target weight-on-bit and a preset rotational speed interval comprises:
determining a first rotating speed interval in the preset rotating speed interval, wherein equivalent total stress corresponding to the rotating speed in the first rotating speed interval is smaller than or equal to a first threshold;
and determining the target rotating speed according to the rotating speed with the minimum sudden change of the corresponding equivalent resultant stress in the first rotating speed interval.
3. The method of claim 2, wherein determining a first speed interval among the preset speed intervals comprises:
determining equivalent total stress corresponding to each rotating speed in the preset rotating speed interval according to the target bit pressure;
and determining the first rotating speed interval according to the equivalent total stress corresponding to each rotating speed in the preset rotating speed interval and the first threshold, wherein the equivalent total stress corresponding to the rotating speed in the first rotating speed interval is less than or equal to the first threshold.
4. The method of any one of claims 1-3, wherein determining a target weight-on-bit comprises:
acquiring stratum characteristics and fatigue parameters of a drilling tool, wherein the stratum characteristics are soft stratum or hard stratum, and the fatigue parameters comprise fatigue coefficient and torsional strength;
and determining the target weight-on-bit according to the formation characteristic and the fatigue parameter.
5. The method of any of claims 1-3, wherein determining a target displacement based on the target nozzle area and drilling fluid density comprises:
determining specific water power according to the target nozzle area, the drilling fluid density and a preset displacement interval;
determining jet impact force according to the target nozzle area, the drilling fluid density and a preset displacement interval;
and determining the target displacement according to the specific water power and the jet impact force.
6. The method of claim 5, wherein determining the target displacement from the specific water power and the jet impact force comprises:
acquiring a first functional relation between specific water power and displacement;
acquiring a second functional relation between jet impact force and displacement;
and determining the target displacement according to the first functional relation and the second functional relation.
7. A drilling parameter determination apparatus comprising a first determination module, a second determination module, a third determination module, and a fourth determination module, wherein:
the first determination module is used for determining a target bit pressure, wherein the target bit pressure is less than or equal to a preset rated bit pressure;
the second determining module is used for determining a target rotating speed according to the target bit pressure and a preset rotating speed interval, wherein the sudden change of the equivalent total stress corresponding to the target rotating speed is minimum in the preset rotating speed interval;
the third determining module is used for determining the area of a target nozzle according to the area of the nozzle of the drill bit to be selected;
the fourth determination module is used for determining the target displacement according to the target nozzle area, the drilling fluid density and the preset displacement interval.
8. The apparatus of claim 7, wherein the second determining module is specifically configured to:
determining a first rotating speed interval in the preset rotating speed interval, wherein equivalent total stress corresponding to the rotating speed in the first rotating speed interval is smaller than or equal to a first threshold;
and determining the target rotating speed according to the rotating speed with the minimum sudden change of the corresponding equivalent resultant stress in the first rotating speed interval.
9. The apparatus of claim 8, wherein the second determining module is specifically configured to:
determining equivalent total stress corresponding to each rotating speed in the preset rotating speed interval according to the target bit pressure;
and determining the first rotating speed interval according to the equivalent total stress corresponding to each rotating speed in the preset rotating speed interval and the first threshold, wherein the equivalent total stress corresponding to the rotating speed in the first rotating speed interval is less than or equal to the first threshold.
10. The apparatus according to any one of claims 7-9, wherein the first determining module is specifically configured to:
acquiring stratum characteristics and fatigue parameters of a drilling tool, wherein the stratum characteristics are soft stratum or hard stratum, and the fatigue parameters comprise fatigue coefficient and torsional strength;
and determining the target weight-on-bit according to the formation characteristic and the fatigue parameter.
11. The apparatus according to any one of claims 7-9, wherein the fourth determining module is specifically configured to:
determining specific water power according to the target nozzle area, the drilling fluid density and a preset displacement interval;
determining jet impact force according to the target nozzle area, the drilling fluid density and a preset displacement interval;
and determining the target displacement according to the specific water power and the jet impact force.
12. The apparatus of claim 11, wherein the fourth determining module is specifically configured to:
acquiring a first functional relation between specific water power and displacement;
acquiring a second functional relation between jet impact force and displacement;
and determining the target displacement according to the first functional relation and the second functional relation.
13. A drilling parameter determination apparatus, comprising: a processor coupled with a memory;
the memory is used for storing a computer program;
the processor is configured to execute a computer program stored in the memory to cause the drilling parameter determination apparatus to perform the drilling parameter determination method of any of claims 1-6 above.
14. A readable storage medium comprising a program or instructions for performing the drilling parameter determination method of any of claims 1-6 when the program or instructions are run on a computer.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117759221A (en) * | 2024-02-21 | 2024-03-26 | 中海油田服务股份有限公司 | Downhole rotating well wall coring control method and system |
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| CN101899969A (en) * | 2010-03-24 | 2010-12-01 | 苏州锐石能源开发技术有限公司 | Real-time on-site drilling full parameter optimization method |
| CN105386724A (en) * | 2014-09-03 | 2016-03-09 | 中国石油化工股份有限公司 | Method for optimization design of hydraulic parameters used for duct tripping-in injection |
| US20200173269A1 (en) * | 2017-08-21 | 2020-06-04 | Landmark Graphics Corporation | Iterative real-time steering of a drill bit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101899969A (en) * | 2010-03-24 | 2010-12-01 | 苏州锐石能源开发技术有限公司 | Real-time on-site drilling full parameter optimization method |
| CN105386724A (en) * | 2014-09-03 | 2016-03-09 | 中国石油化工股份有限公司 | Method for optimization design of hydraulic parameters used for duct tripping-in injection |
| US20200173269A1 (en) * | 2017-08-21 | 2020-06-04 | Landmark Graphics Corporation | Iterative real-time steering of a drill bit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117759221A (en) * | 2024-02-21 | 2024-03-26 | 中海油田服务股份有限公司 | Downhole rotating well wall coring control method and system |
| CN117759221B (en) * | 2024-02-21 | 2024-05-03 | 中海油田服务股份有限公司 | Downhole rotating well wall coring control method and system |
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