CN117418798A - Intelligent drilling fluid injection adjusting method, device and system - Google Patents
Intelligent drilling fluid injection adjusting method, device and system Download PDFInfo
- Publication number
- CN117418798A CN117418798A CN202311744293.XA CN202311744293A CN117418798A CN 117418798 A CN117418798 A CN 117418798A CN 202311744293 A CN202311744293 A CN 202311744293A CN 117418798 A CN117418798 A CN 117418798A
- Authority
- CN
- China
- Prior art keywords
- pressure
- drilling fluid
- injection
- intelligent
- drill string
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 170
- 239000012530 fluid Substances 0.000 title claims abstract description 164
- 238000002347 injection Methods 0.000 title claims abstract description 109
- 239000007924 injection Substances 0.000 title claims abstract description 109
- 238000000034 method Methods 0.000 title claims abstract description 34
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 45
- 238000006073 displacement reaction Methods 0.000 claims description 33
- 239000007788 liquid Substances 0.000 claims description 14
- 230000001276 controlling effect Effects 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 3
- 238000011161 development Methods 0.000 abstract description 5
- 230000008878 coupling Effects 0.000 description 12
- 238000010168 coupling process Methods 0.000 description 12
- 238000005859 coupling reaction Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000004590 computer program Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 210000002445 nipple Anatomy 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
Abstract
The invention relates to the technical field of oil and gas exploitation, in particular to a method, a device and a system for intelligently adjusting drilling fluid injection, wherein the method comprises the following steps: collecting stratum pressure in real time; determining injection pressure based on formation pressure, wherein the injection pressure comprises formation manifold pressure consumable, drill string friction pressure drop, drill bit pressure drop and annulus pressure loss; based on the injection pressure, the drilling fluid density, the drilling fluid discharge capacity and the drilling fluid flow rate are determined, the intelligent drilling fluid injection adjusting system is controlled, and then intelligent adjustment is performed according to the actual condition of the stratum, so that the drilling efficiency is improved, the drilling risk is reduced, and reliable technical support is provided for oil and gas exploration and development.
Description
Technical Field
The invention relates to the technical field of oil and gas exploitation, in particular to a method, a device and a system for intelligently adjusting drilling fluid injection.
Background
In the process of oil and gas exploration and development, drilling is a key link for acquiring underground oil and gas resources. The drilling fluid is used as an indispensable component and plays important roles of cooling, lubricating, suspending drilling cuttings, controlling well wall stability and the like in the drilling process. However, the conventional drilling fluid system cannot be regulated and optimized in real time to adapt to the actual condition of the stratum, so that the problems of low drilling efficiency, unstable well wall, environmental pollution and the like are caused.
In response to the above problems, some related improvements have been proposed, such as real-time monitoring and feedback systems based on sensor data, and the use of different drilling fluid formulations. However, these techniques have certain limitations, such as limited monitoring range, and cannot fully and accurately reflect the condition of the stratum; furthermore, the prior art still fails to achieve immediate optimization of drilling fluid formulation to accommodate formation changes.
Therefore, how to effectively adjust the drilling fluid according to the actual situation of the stratum and improve the drilling efficiency are technical problems to be solved urgently at present.
Disclosure of Invention
In view of the above, the present invention provides a method, apparatus and device for pressure-controlled drilling in a water injection zone that overcomes or at least partially solves the above-mentioned problems.
In a first aspect, the present invention provides a method for intelligently adjusting drilling fluid injection, which is applied to a drilling fluid injection intelligent adjustment system, and the method includes:
collecting stratum pressure in real time;
determining injection pressure based on the formation pressure, wherein the injection pressure comprises ground manifold pressure loss, drill string friction pressure drop, drill bit pressure drop and annulus pressure loss;
determining drilling fluid density, drilling fluid displacement, and drilling fluid flow rate based on the injection pressure, comprising:
determining drilling fluid density, drilling fluid flow rate and drilling fluid displacement based on the relation between the injection pressure and the ground manifold pressure, the friction pressure drop in the drill string, the drill bit pressure drop and the annulus pressure consumption and the relation between the drilling fluid displacement and the drilling fluid flow rate, wherein the relation between the injection pressure and the ground manifold pressure consumption, the friction pressure drop in the drill string, the drill bit pressure drop and the annulus pressure consumption is as follows:wherein->For the injection pressure, +.>For the surface manifold pressure consumption, +.>For a friction pressure drop in said drill string, +.>For the bit pressure drop, +.>The annular pressure loss is achieved;
and controlling the intelligent drilling fluid injection regulating system based on the density of the drilling fluid, the displacement of the drilling fluid and the flow velocity in the drill string.
Preferably, the determining the injection pressure based on the formation pressure includes:
the injection pressure is determined based on the formation pressure and a balance relationship between the formation pressure and the injection pressure.
Preferably, the equilibrium relationship is that the injection pressure is greater than the formation pressure, and a pressure difference between the injection pressure and the formation pressure satisfies a preset value.
In a second aspect, the present invention further provides an intelligent drilling fluid injection adjusting device, including:
the acquisition module is used for acquiring the stratum pressure in real time;
the first determining module is used for determining injection pressure based on the formation pressure, wherein the injection pressure comprises ground manifold pressure consumption, drill string friction pressure drop, drill bit pressure drop and annular pressure consumption;
the second determining module is used for determining the density of drilling fluid, the displacement of drilling fluid and the flow rate of the drilling fluid based on the injection pressure, and determining the density of the drilling fluid, the flow rate of the drilling fluid and the displacement of the drilling fluid based on the relation between the injection pressure and the pressure loss of a surface manifold, the friction pressure drop in a drill string, the pressure drop of a drill bit and the annular pressure loss and the relation between the displacement of the drilling fluid and the flow rate of the drilling fluid, wherein the relation between the injection pressure and the pressure loss of the surface manifold, the friction pressure drop in the drill string, the pressure drop of the drill bit and the annular pressure loss is as follows:wherein->For the injection pressure, +.>For the surface manifold pressure consumption, +.>For a friction pressure drop in said drill string, +.>For the bit pressure drop, +.>The annular pressure loss is achieved;
and the control module is used for controlling the intelligent drilling fluid injection regulating system based on the density of the drilling fluid, the displacement of the drilling fluid and the flow velocity in the drill string.
In a third aspect, the present invention also provides an intelligent drilling fluid injection adjustment system, including:
an integrated intelligent liquid dispenser;
the ground control box is connected with the integrated intelligent fluid dispenser and is used for controlling the integrated intelligent fluid dispenser by adopting the drilling fluid injection intelligent regulation method according to the first aspect.
Preferably, the integrated intelligent fluid dispenser further comprises a sensor for collecting the injection pressure and the formation pressure, and the system further comprises:
and the upper computer is connected with the ground control box and used for drawing a change curve of the injection pressure and the stratum pressure and drawing a drilling fluid displacement curve.
Preferably, the integrated intelligent liquid dispenser comprises: the circuit board comprises a communication interface and is connected with the ground control box.
One or more technical solutions in the embodiments of the present invention at least have the following technical effects or advantages:
the invention provides an intelligent drilling fluid adjusting method, which is applied to an intelligent drilling fluid adjusting system and comprises the following steps: collecting stratum pressure in real time; determining injection pressure based on formation pressure, wherein the injection pressure comprises formation manifold pressure consumable, drill string friction pressure drop, drill bit pressure drop and annulus pressure loss; based on the injection pressure, the drilling fluid density, the drilling fluid discharge capacity and the drilling fluid flow rate are determined, the intelligent drilling fluid injection adjusting system is controlled, and then intelligent adjustment is performed according to the actual condition of the stratum, so that the drilling efficiency is improved, the drilling risk is reduced, and reliable technical support is provided for oil and gas exploration and development.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also throughout the drawings, like reference numerals are used to designate like parts. In the drawings:
FIG. 1 is a schematic flow chart showing steps of an intelligent drilling fluid adjusting method in an embodiment of the invention;
FIG. 2 shows a schematic diagram of a device for intelligent adjustment of drilling fluid in an embodiment of the invention;
FIG. 3 shows a schematic diagram of a drilling fluid injection intelligent regulation system in an embodiment of the invention;
FIG. 4 is a schematic diagram showing a cross section of an integrated intelligent dispenser in accordance with an embodiment of the present invention;
FIG. 5 is a schematic diagram showing another cross section of an integrated intelligent dispenser in accordance with an embodiment of the present invention;
FIG. 6 shows a schematic view of the structure of a drill bit in an embodiment of the present invention;
FIG. 7 is a schematic diagram of a carrier signal according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a level shift chip SN75LV4737A according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a level shift chip SN65 hvd11_ht according to an embodiment of the present invention;
fig. 10 is a schematic diagram of a signal coupling module circuit according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Example 1
The embodiment of the invention provides an intelligent drilling fluid adjusting method which is applied to an intelligent drilling fluid injection adjusting system, as shown in fig. 1, and comprises the following steps:
s101, collecting stratum pressure in real time;
s102, determining injection pressure based on formation pressure, wherein the injection pressure comprises ground manifold pressure consumption, drill string friction pressure drop, drill bit pressure drop and annulus pressure consumption;
s103, determining drilling fluid density, drilling fluid displacement and drilling fluid flow rate based on the injection pressure;
s104, controlling the intelligent drilling fluid injection regulating system based on the density of the drilling fluid, the displacement of the drilling fluid and the flow velocity in the drill string.
Specifically, during oilfield exploitation, formation pressure varies as the depth of the formation varies. In the process of continuously changing the formation pressure, the drilling fluid pressure to be injected also needs to be changed, and the drilling fluid pressure can be controlled by changing the drilling fluid density, the drilling fluid displacement and the drilling fluid flow rate.
The density of the drilling fluid is related to substances in the drilling fluid, the drilling fluid can balance formation pressure on one hand, prevent well collapse, blowout, well leakage and stabilize a well wall, and can transmit water power to help a drill bit to break rock, transmit power to the downhole power drill bit and cool the drill bit and the drilling tool. The drilling fluid is mainly slurry formed by water, clay and chemical treating agent, and the density of the drilling fluid can be adjusted by changing the density of the slurry.
After the formation pressure is collected in real time at S101, S102 is performed, and based on the formation pressure, a fluid injection pressure is determined, including surface manifold pressure loss, drill string friction pressure drop, drill bit pressure drop, and annulus pressure loss.
Specifically, the injection pressure is determined based on the formation pressure and a balance relationship between the formation pressure and the injection pressure.
The equilibrium relation is that the injection pressure is larger than the formation pressure, and the pressure difference between the injection pressure and the formation pressure meets the preset value.
Specifically, the injection pressure is slightly greater than the formation pressure to ensure a balance between the formation pressure and the injection pressure.
After the injection pressure is determined, the control of the injection pressure is realized by controlling the concentration of the drilling fluid, the flow rate of the drilling fluid and the discharge capacity of the drilling fluid.
When determining the concentration of drilling fluid, the flow rate of the drilling fluid and the discharge rate of the drilling fluid, the method specifically comprises the following steps: and determining the drilling fluid density, the drilling fluid flow rate and the drilling fluid displacement based on the relation between the injection fluid pressure and the ground manifold pressure consumption, the friction pressure drop in the drill string, the drill bit pressure drop and the annular pressure consumption, the relation between the drilling fluid density and the drilling fluid flow rate and the relation between the drilling fluid displacement and the drilling fluid flow rate.
The relation between the injection pressure and the ground manifold pressure consumption, the friction pressure drop in the drill string, the drill bit pressure drop and the annular pressure consumption is as follows:wherein->For the injection pressure, +.>For the surface manifold pressure consumption, +.>For a friction pressure drop in said drill string, +.>For the bit pressure drop, +.>Is annular pressure loss.
The manifold is the assembly that is formed by the intersection of many pipelines, and the manifold includes: high pressure pipeline, riser, hose, kelly, etc.
Wherein,the lengths of the high-pressure pipeline, the vertical pipe, the water hose and the square drilling rod are respectively corresponding;the inner diameters of the high-pressure pipeline, the vertical pipe, the water hose and the kelly are respectively corresponding to each other; />For the density of drilling fluid>For drilling fluid displacement, < >>Is a coefficient of viscosity.
The calculation formula of the friction pressure drop in the drill string:
wherein,is the friction pressure drop in the drill string, < >>Is the inner diameter of the drill string>Is the friction coefficient in the drill string, < >>For the flow rate of the well injection liquid, < > is->Is the length of the flow conduit.
The pressure drop of the drill bit is calculated as follows:
wherein,for the nozzle flow coefficient>Is the diameter of the nozzle, in particular the nozzle of a pilot bit.
The annular pressure consumption is calculated as follows:
for annular pressure loss>Is the inner diameter of the well bore>For the outer diameter of the drill string>Is the friction coefficient in annulus->Is the flow rate in the annulus. Annulus refers to the space between the casing and the base pipe.
The friction coefficient in the annular space and the friction coefficient in the drill string are determined by adopting a Blasius type empirical formula:
is any friction coefficient +.>Are friction coefficient constants, < ->Is the Reynolds number.
Wherein when the drilling fluid flows into a laminar flow state,，/>=24，/>=1; when the drilling fluid flow is in a turbulent state +.>Friction coefficient constant->And->Determined by the fluidity index:
wherein (1)>Is a fluidity index.
The relationship between drilling fluid flow rate and drilling fluid displacement is as follows:
within the drill string:
in the annulus:
from these formulas, the drilling fluid displacement, drilling fluid density, and drilling fluid flow rate can be determined.
Next, S104 is performed to control the intelligent drilling fluid injection system based on the density of the drilling fluid, the drilling fluid displacement, and the flow rate in the drill string. And then can carry out intelligent regulation according to actual conditions to improve drilling efficiency, reduce well drilling risk, provide reliable technical support for oil gas exploration and development.
One or more technical solutions in the embodiments of the present invention at least have the following technical effects or advantages:
the invention provides an intelligent drilling fluid adjusting method, which is applied to an intelligent drilling fluid adjusting system and comprises the following steps: collecting stratum pressure in real time; determining injection pressure based on formation pressure, wherein the injection pressure comprises formation manifold pressure consumable, drill string friction pressure drop, drill bit pressure drop and annulus pressure loss; based on the injection pressure, the drilling fluid density, the drilling fluid discharge capacity and the drilling fluid flow rate are determined, the intelligent drilling fluid injection adjusting system is controlled, and then intelligent adjustment is performed according to the actual condition of the stratum, so that the drilling efficiency is improved, the drilling risk is reduced, and reliable technical support is provided for oil and gas exploration and development.
Example two
Based on the same inventive concept, the embodiment of the invention also provides an intelligent drilling fluid injection adjusting device, as shown in fig. 2, comprising:
an acquisition module 201, configured to acquire formation pressure in real time;
a first determination module 202 for determining a fluid injection pressure based on the formation pressure, the fluid injection pressure including a surface manifold pressure loss, a drill string friction pressure drop, a bit pressure drop, and an annulus pressure loss;
a second determining module 203 for determining a drilling fluid density, a drilling fluid displacement, and a drilling fluid flow rate based on the injection pressure;
and the control module 204 is used for controlling the intelligent drilling fluid injection regulating system based on the density of the drilling fluid, the displacement of the drilling fluid and the flow rate in the drill string.
In an alternative embodiment, first determination module 202 is configured to determine the injection pressure based on the formation pressure and a balance relationship between the formation pressure and the injection pressure.
In an alternative embodiment, the equilibrium relationship is that the injection pressure is greater than the formation pressure and the pressure difference between the injection pressure and the formation pressure meets a preset value.
In an alternative embodiment, the relationship between the injection pressure and surface manifold pressure loss, friction pressure drop in the drill string, bit pressure drop, and annulus pressure loss is as follows:wherein->For the injection pressure, +.>For the surface manifold pressure consumption, +.>For a friction pressure drop in said drill string, +.>For the bit pressure drop, +.>And (5) the annular pressure loss is achieved.
In an alternative embodiment, the second determining module 204 is configured to determine the drilling fluid density, the drilling fluid flow rate, and the drilling fluid displacement based on a relationship between the injection fluid pressure and the surface manifold pressure, the friction pressure drop within the drill string, the bit pressure drop, and the annulus pressure loss, and a relationship between the drilling fluid displacement and the drilling fluid flow rate.
Example III
Based on the same inventive concept, the embodiment of the invention also provides an intelligent drilling fluid injection adjusting system, as shown in fig. 3, comprising:
an integrated intelligent liquid dispenser 301;
the ground control box 302 is connected with the integrated intelligent fluid dispenser 301 and is used for controlling the integrated intelligent fluid dispenser 301 by adopting the drilling fluid injection intelligent regulation method in the first embodiment.
As shown in fig. 4, the integrated intelligent fluid dispenser 301 includes a casing 401 and a drilling device 402 that are nested inside and outside, the drilling device 402 is disposed inside the casing 401, the drilling device 402 includes an upper joint 4021, a central pipe 4022, a slurry mixing device 4023, a hydraulic control flow control valve 4024, and a lower joint 4025, the upper joint 4021 is connected to a drill rod, the lower joint 4025 is connected to a drill bit, a restrictor 403 is disposed outside the central pipe 4022 and inside the casing 401, and the restrictor 403 is provided with a throttle 4031.
In a specific embodiment, the drill bit 60 is a roller cone drill bit, as shown in fig. 6, with an adjustable tap 601. By controlling the opening of the adjustable nozzle 601, the drilling fluid flow rate can be controlled. The opening degree of the liquid nozzle is specifically controlled by controlling the hydraulic control flow rate adjustment valve 4024.
A motor is further arranged in the integrated intelligent liquid dispenser 301 and is used for driving a flow regulating valve to adjust the opening degree of the liquid nozzle.
The throttle valve 4031 provided in the throttle 403 is used to control the flow rate of drilling fluid back to the casing 401, and when the throttle valve 4031 is blocked by cuttings, the throttle valve is controlled to open to release pressure and remove cuttings.
As shown in fig. 5, the integrated intelligent dispenser 301 further includes: a sensor 501 for sensing injection pressure and formation pressure, the system further comprising: the upper computer 303 is connected with the ground control box 302 and is used for drawing a change curve of the injection pressure and the formation pressure and drawing a drilling fluid displacement curve. The upper computer 303 is in communication with the ground control box 302, and is configured with drilling fluid displacement, drilling fluid density and drilling fluid flow rate, providing references for automatic deployment.
By adopting the intelligent control, the bottom hole pressure is ensured to be in a safety window, and the opening degree of the integral adjustable liquid nozzle is adjusted.
As shown in fig. 5, the integrated intelligent liquid dispenser further includes: the circuit board 502, including the communication circuitry, is connected to the floor control box 302.
The communication circuit is specifically an analog carrier block. As shown in fig. 7, the analog carrier module realizes communication with the ground control box 302 through the analog carrier technology, and obtains electric energy through the single-core steel pipe cable, and the underground integrated intelligent liquid dispenser is provided with a super capacitor to realize temporary storage of electric energy and remove ripple variation (filter circuit) of a power supply, so that the power supply quality is improved. The processing procedure of communication transmission is as follows: converting the signal source output signal into a standard signal, modulating the standard signal on an analog carrier signal in an amplitude modulation mode through a modulation circuit, amplifying and coupling the standard signal to a steel cylinder cable, and realizing long-distance transmission; at the end of the transmission (ground control box 302), the analog carrier signal is received by the receiving circuit, and the modulated signal is filtered out of the power line by line coupling and signal filtering; the signal is then demodulated to a standard TTL voltage signal after processing by a demodulation circuit and an amplification circuit.
The ground controller and the monitoring computer use an RS232 serial port communication mode, the level conversion chip adopts SN75LV4737A of TI company, as shown in figure 8, the chip adopts SSOP patch package, the size is small, and the working temperature range is minus 40 ℃ to +125deg.C. The underground communication nipple and the measuring nipple use an RS485 serial port communication mode, the level conversion chip adopts SN65 HVD11_HT of TI company, as shown in figure 9, the chip adopts SOIC patch package, the size is small, and the working temperature range is-55 ℃ to +175'. The read-write operation of the SN65 HVD11_HT is controlled by a GPIO6 pin of the DSP, and pins A and B are connected with pins A and B of the measuring nipple.
In the process of realizing communication between the communication circuit of the circuit board and the ground control box 302, a signal coupling module circuit is adopted, as shown in fig. 10:
the signal coupling module circuit has the main functions of coupling a carrier signal to a direct-current power line at a transmitting end for transmission, coupling an alternating-current signal on the direct-current power line at a receiving end, and isolating damage of the direct-current power line to the transmitting and receiving modules. The smaller the difference between the alternating current signal at the output end and the alternating current signal at the input end of the signal coupling module circuit is, the stronger the performance of the coupling module is. The composite coupling technology has high transmission efficiency, ideal transmission characteristics and small working attenuation, can realize impedance transformation, and is suitable for general alternating current power lines. The adopted power line is a direct current power line, and the direct current power line is directly connected to two ends of the transformer, so that the transformer can continuously generate heat and be saturated prematurely, the transformer is easy to burn out and the coupling performance is poor, and therefore, a blocking capacitor needs to be added on the secondary side of the isolation coupling transformer.
The integrated intelligent fluid dispenser 301 realizes collection of formation pressure and injection pressure in the drilling process and realizes closed-loop control.
And (3) passing through a cable packer: the cable is preset in the cavity and then is butted through the submerged high-voltage single-core cable connector during construction.
The system also comprises a display which is used for displaying the injection pressure flow value, the acquired data is drawn into a curve form, the visual analysis of the data by a user is facilitated, the curve drawing interface obtains data coordinates, and the acquisition time can be changed according to the magnitude of the data. Three curves of one layer in the liquid injection layer exist, so that the curves existing in the multi-layer liquid injection layer are quite large and are not suitable for being drawn in the same image, one layer occupies one drawing board, the number of layers is as large as the number of drawing boards, data of the same layer can be well analyzed, one flow value uses one ordinate, two pressure values use one coordinate, and the abscissa is the acquisition time. The upper part of the curve has functions of enlarging and reducing coordinates, enlarging and reducing curve details, capturing images, displaying curve values, changing curve coordinate values, storing, printing and the like.
Example IV
Based on the same inventive concept, the embodiments of the present invention provide a computer readable storage medium having stored thereon a computer program which when executed by a processor implements the steps of the above-described drilling fluid injection intelligent regulation method.
The algorithms and displays presented herein are not inherently related to any particular computer, virtual system, or other apparatus. Various general-purpose systems may also be used with the teachings herein. The required structure for a construction of such a system is apparent from the description above. In addition, the present invention is not directed to any particular programming language. It will be appreciated that the teachings of the present invention described herein may be implemented in a variety of programming languages, and the above description of specific languages is provided for disclosure of enablement and best mode of the present invention.
In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be construed as reflecting the intention that: i.e., the claimed invention requires more features than are expressly recited in each embodiment. Rather, as each embodiment reflects, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules in the apparatus of the embodiments may be adaptively changed and disposed in one or more apparatuses different from the embodiments. The modules or units or components of the embodiments may be combined into one module or unit or component and, furthermore, they may be divided into a plurality of sub-modules or sub-units or sub-components. Any combination of all features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or units of any method or apparatus so disclosed, may be used in combination, except insofar as at least some of such features and/or processes or units are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in a specific implementation, any of the claimed embodiments may be used in any combination.
Various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functions of some or all of the components of a well drilling fluid intelligent regulation device, well drilling fluid intelligent regulation system in accordance with embodiments of the present invention. The present invention can also be implemented as an apparatus or device program (e.g., a computer program and a computer program product) for performing a portion or all of the methods described herein. Such a program embodying the present invention may be stored on a computer readable medium, or may have the form of one or more signals. Such signals may be downloaded from an internet website, provided on a carrier signal, or provided in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order. These words may be interpreted as names.
Claims (7)
1. An intelligent drilling and fluid injection adjusting method applied to an intelligent drilling and fluid injection adjusting system is characterized by comprising the following steps:
collecting stratum pressure in real time;
determining injection pressure based on the formation pressure, wherein the injection pressure comprises ground manifold pressure loss, drill string friction pressure drop, drill bit pressure drop and annulus pressure loss;
determining drilling fluid density, drilling fluid displacement, and drilling fluid flow rate based on the injection pressure, comprising:
determining drilling fluid density, drilling fluid flow rate and drilling fluid displacement based on the relation between the injection pressure and the ground manifold pressure, the friction pressure drop in the drill string, the drill bit pressure drop and the annulus pressure consumption and the relation between the drilling fluid displacement and the drilling fluid flow rate, wherein the relation between the injection pressure and the ground manifold pressure consumption, the friction pressure drop in the drill string, the drill bit pressure drop and the annulus pressure consumption is as follows:wherein->For the injection pressure, +.>For the surface manifold pressure consumption, +.>For a friction pressure drop in said drill string, +.>For the bit pressure drop, +.>The annular pressure loss is achieved;
and controlling the intelligent drilling fluid injection regulating system based on the density of the drilling fluid, the displacement of the drilling fluid and the flow velocity in the drill string.
2. The method of claim 1, wherein the determining a fluid injection pressure based on the formation pressure comprises:
the injection pressure is determined based on the formation pressure and a balance relationship between the formation pressure and the injection pressure.
3. The method of claim 2, wherein the equilibrium relationship is that the injection pressure is greater than the formation pressure and a pressure differential between the injection pressure and the formation pressure meets a preset value.
4. Drilling annotates liquid intelligent regulation device, its characterized in that includes:
the acquisition module is used for acquiring the stratum pressure in real time;
the first determining module is used for determining injection pressure based on the formation pressure, wherein the injection pressure comprises ground manifold pressure consumption, drill string friction pressure drop, drill bit pressure drop and annular pressure consumption;
the second determining module is used for determining the density of drilling fluid, the displacement of drilling fluid and the flow rate of the drilling fluid based on the injection pressure, and determining the density of the drilling fluid, the flow rate of the drilling fluid and the displacement of the drilling fluid based on the relation between the injection pressure and the pressure loss of a surface manifold, the friction pressure drop in a drill string, the pressure drop of a drill bit and the annular pressure loss and the relation between the displacement of the drilling fluid and the flow rate of the drilling fluid, wherein the relation between the injection pressure and the pressure loss of the surface manifold, the friction pressure drop in the drill string, the pressure drop of the drill bit and the annular pressure loss is as follows:wherein->For the injection pressure, +.>For the surface manifold pressure consumption, +.>For a friction pressure drop in said drill string, +.>For the bit pressure drop, +.>The annular pressure loss is achieved;
and the control module is used for controlling the intelligent drilling fluid injection regulating system based on the density of the drilling fluid, the displacement of the drilling fluid and the flow velocity in the drill string.
5. An intelligent drilling fluid injection adjustment system, comprising:
an integrated intelligent liquid dispenser;
the ground control box is connected with the integrated intelligent fluid dispenser and is used for controlling the integrated intelligent fluid dispenser by adopting the drilling fluid injection intelligent regulation method according to any one of claims 1-3.
6. The system of claim 5, wherein the integrated intelligent dispenser further comprises a sensor for collecting injection pressure and formation pressure, the system further comprising:
and the upper computer is connected with the ground control box and used for drawing a change curve of the injection pressure and the stratum pressure and drawing a drilling fluid displacement curve.
7. The system of claim 6, wherein the integrated intelligent dispenser comprises: the circuit board comprises a communication interface and is connected with the ground control box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311744293.XA CN117418798B (en) | 2023-12-19 | 2023-12-19 | Intelligent drilling fluid injection adjusting method, device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311744293.XA CN117418798B (en) | 2023-12-19 | 2023-12-19 | Intelligent drilling fluid injection adjusting method, device and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117418798A true CN117418798A (en) | 2024-01-19 |
| CN117418798B CN117418798B (en) | 2024-03-15 |
Family
ID=89523331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311744293.XA Active CN117418798B (en) | 2023-12-19 | 2023-12-19 | Intelligent drilling fluid injection adjusting method, device and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117418798B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080060846A1 (en) * | 2005-10-20 | 2008-03-13 | Gary Belcher | Annulus pressure control drilling systems and methods |
| US20100050762A1 (en) * | 2008-09-02 | 2010-03-04 | Nold Iii Raymond V | Methods and apparatus to perform pressure testing of geological formations |
| CN105370229A (en) * | 2014-08-22 | 2016-03-02 | 中国石油化工股份有限公司 | Control method for drilling fluid |
| CN106121621A (en) * | 2016-07-15 | 2016-11-16 | 西南石油大学 | A kind of intelligent drilling specialist system |
| CN114526025A (en) * | 2022-01-25 | 2022-05-24 | 西南石油大学 | Remote intelligent active drilling pressure control system and method |
-
2023
- 2023-12-19 CN CN202311744293.XA patent/CN117418798B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080060846A1 (en) * | 2005-10-20 | 2008-03-13 | Gary Belcher | Annulus pressure control drilling systems and methods |
| US20100050762A1 (en) * | 2008-09-02 | 2010-03-04 | Nold Iii Raymond V | Methods and apparatus to perform pressure testing of geological formations |
| CN105370229A (en) * | 2014-08-22 | 2016-03-02 | 中国石油化工股份有限公司 | Control method for drilling fluid |
| CN106121621A (en) * | 2016-07-15 | 2016-11-16 | 西南石油大学 | A kind of intelligent drilling specialist system |
| CN114526025A (en) * | 2022-01-25 | 2022-05-24 | 西南石油大学 | Remote intelligent active drilling pressure control system and method |
Non-Patent Citations (2)
| Title |
|---|
| 王宏科: "微流量控压钻井技术", 化工设计通讯, vol. 44, no. 10, 28 October 2018 (2018-10-28), pages 244 - 245 * |
| 陈廷根、管志川: "钻井工程理论与技术", vol. 1, 31 August 2000, 石油大学出版社, pages: 150 - 151 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117418798B (en) | 2024-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109209337B (en) | Horizontal well drilling lubricity experiment device and method considering rock debris bed | |
| EP2807483B1 (en) | Systems, methods and devices for analyzing drilling fluid | |
| He et al. | Development and prospect of separated zone oil production technology | |
| CN103470201A (en) | Fluid control system | |
| AU2015384181B2 (en) | Ultrasound color flow imaging for drilling applications | |
| CN102797451A (en) | Automatic control system and method for underground annulus pressure of deep water surface layer drilling | |
| NO20171249A1 (en) | Ultrasound color flow imaging for oil field applications | |
| CA2619215A1 (en) | Communicating fluids with a heated-fluid generation system | |
| CN117418798B (en) | Intelligent drilling fluid injection adjusting method, device and system | |
| NO20171227A1 (en) | Ultrasound color flow imaging for oil field applications | |
| CN108086908B (en) | Method for using slurry in river channel crossing construction by directional drilling | |
| CN206220957U (en) | Gas spill and leakage position detecting device during controlled pressure drilling | |
| CN104632116A (en) | Method for judging salvage opportunity of down hole chock | |
| Randall et al. | Flow of mud during drilling operations | |
| CN103790528A (en) | Seabed mud lifting pump control technology based on FPGA | |
| CN103104245A (en) | Sensor used for measuring mud density and mass flow rate | |
| CN116629032A (en) | Cloud high-frequency pressure-based vertical well pressure data inversion interpretation method | |
| CN103105343A (en) | Sensor for measuring density and mass flow of mud and measurement method based on sensor | |
| Cai et al. | Research on Mud Technologies of Long Distance Horizontal Directional Drilling in China | |
| CN103105208A (en) | Measurement and control method based on automatic compensation target flowmeter | |
| CN103090919A (en) | Automatic compensation target type flowmeter and measurement and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |