CN107575212B - Ultrasonic gas invasion while drilling monitoring device and method - Google Patents
Ultrasonic gas invasion while drilling monitoring device and method Download PDFInfo
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Abstract
The invention provides an ultrasonic gas invasion while drilling monitoring device and a method, wherein the monitoring device comprises: the gas invasion monitoring short section and the data processing terminal are arranged; the gas invasion monitoring nipple comprises an ultrasonic transmitting sensor, an ultrasonic receiving sensor, a signal processor, a drilling condition monitoring module and a data analyzer; the ultrasonic emission sensor is used for emitting ultrasonic signals to the fluid in the underground annulus; the ultrasonic receiving sensor is used for receiving ultrasonic signals reflected by fluid in the annulus; the drilling condition monitoring module is used for acquiring drilling state data; the signal processor is connected with the ultrasonic transmitting sensor and the ultrasonic receiving sensor and is used for preprocessing ultrasonic signals; the data analyzer is respectively connected with the signal processor and the drilling condition monitoring module and is used for comparing the drilling condition data with preset condition data, carrying out noise reduction treatment on the preprocessed ultrasonic signal according to a comparison result, comparing the processed ultrasonic signal with a preset threshold value and obtaining gas invasion result data according to the comparison result; and the data processing terminal is in communication connection with the data analyzer and is used for acquiring, displaying and outputting the gas invasion result.
Description
Technical Field
The invention relates to the technical field of drilling application, in particular to an ultrasonic gas invasion while drilling monitoring device and method.
Background
In 4 months in 2010, 17 people are seriously injured and 11 people are dead due to the explosion and the fire of a 'deep water horizon' drilling platform rented by BP oil company in the gulf of Mexico in the United states, so that the gulf of Mexico and coastal areas are seriously polluted. After an accident occurs, the drilling platform explodes and overturns, so that the damage degree of field data is large, and the accident reason cannot be analyzed timely and accurately. In addition, crude oil is continuously sprayed out from a seabed wellhead, the wellhead is not provided with a metering device, so that the leakage of the crude oil cannot be accurately estimated, a lot of troubles are brought to later-stage rescue, environmental pollution assessment and pollutant treatment, the accident is caused by a lot of reasons, but if the possibility of blowout is recognized earlier, gas invasion is determined in advance, the gas invasion can be processed as early as possible, casualties are avoided, and other heavy losses are reduced.
The most common in situ methods for the detection of invasion of formation fluids are surface detection methods: the method comprises the following steps of drilling fluid pool surface detection, return flow monitoring, drilling working condition display, drilling fluid property display and the like, and has the following defects: the display is late, the error is large, the well shut-in confirms that the gas invasion aggravates the gas invasion degree, and the like. As the depth of the well increases, gas invasion is manifested from the occurrence to the surface, requiring a long time and distance, finding one minute later and the risk is one minute closer. For earlier detection and treatment of overflows, it is necessary to develop a practical early gas intrusion detection device on site.
Disclosure of Invention
The invention aims to provide an ultrasonic gas invasion while drilling monitoring device and method which can timely and accurately measure gas invasion data of a drilling well and effectively reduce well control risks.
In order to achieve the above object, the present invention provides an ultrasonic gas invasion while drilling monitoring device, which comprises: the gas invasion monitoring short section and the data processing terminal are arranged; the gas invasion monitoring nipple comprises an ultrasonic transmitting sensor, an ultrasonic receiving sensor, a signal processor, a drilling condition monitoring module and a data analyzer; the ultrasonic emission sensor is used for emitting ultrasonic signals to the fluid in the downhole annulus; the ultrasonic receiving sensor is used for receiving ultrasonic signals reflected by fluid in the downhole annulus; the drilling condition monitoring module is used for acquiring drilling state data; the signal processor is connected with the ultrasonic transmitting sensor and the ultrasonic receiving sensor and is used for preprocessing the ultrasonic signals to generate ultrasonic preprocessing signals; the data analyzer is respectively connected with the signal processor and the drilling working condition monitoring module and is used for comparing the drilling state data with preset state data, carrying out noise reduction processing on the ultrasonic preprocessing signal according to a comparison result, comparing the processed ultrasonic preprocessing signal with a preset threshold value and obtaining gas invasion result data according to the comparison result; and the data processing terminal is in communication connection with the data analyzer and is used for acquiring, displaying and outputting the gas invasion result.
In the above ultrasonic gas invasion while drilling monitoring device, preferably, the data processing terminal further includes an alarm module, and the alarm module is configured to compare the gas invasion result with a predetermined alarm threshold value, and output an alarm signal according to the comparison result.
In the ultrasonic gas invasion-while-drilling monitoring device, preferably, the outer diameter of the gas invasion monitoring nipple is consistent with the outer diameter of the drill collar, and the inner diameter is smaller than or equal to the inner diameter of the drill collar; a plurality of cavities are formed in the outer wall side of the gas invasion monitoring nipple and used for accommodating the ultrasonic transmitting sensor, the ultrasonic receiving sensor, the signal processor, the drilling working condition monitoring module and the data analyzer;
in the above ultrasonic gas invasion while drilling monitoring device, preferably, a communication cable and a power supply cable channel are arranged between the cavity and the cavity, and are used for arranging the communication cable and the power supply cable; and a curved surface cover body is arranged outside the cavity and used for sealing the cavity.
In the above ultrasonic gas invasion while drilling monitoring device, preferably, the monitoring device further comprises a data returning module, and the data returning module is connected to the data analyzer and is configured to send the gas invasion result obtained by the data analyzer to the data processing terminal; the data feedback module comprises a sound wave signal transmitter and a data conversion processor; the sound wave signal transmitter is used for transmitting the gas invasion result to the data processing terminal; and the data conversion processor is used for converting the gas invasion result into a preset data format and then transmitting the preset data format back to the data processing terminal by the sound wave signal transmitter.
In the above ultrasonic gas invasion while drilling monitoring device, preferably, the drilling condition monitoring module comprises an angular velocity sensor, an acceleration sensor and a differential pressure sensor; the angular speed sensor is used for monitoring the rotation state of the drill string; the acceleration sensor is used for monitoring the tripping state of the drill string; the differential pressure sensor is used for measuring the pressure difference between two holes in the inner wall of the drill collar and measuring the flowing condition and the flow rate of the fluid in the drill rod according to the pressure difference value.
The invention also provides an ultrasonic gas invasion while drilling monitoring method of the ultrasonic gas invasion while drilling monitoring device, wherein the monitoring method comprises the following steps: transmitting an ultrasonic signal to the fluid in the well on the outer wall of the drill collar; acquiring ultrasonic signals reflected by the fluid in the annulus and current drilling state data; and comparing the drilling state data with preset state data, performing noise reduction treatment on the ultrasonic signal according to a comparison result, comparing the treated ultrasonic signal with a preset threshold value, and obtaining gas invasion result data according to the comparison result.
In the above method for monitoring gas invasion while drilling with ultrasonic waves, preferably, the comparing the processed ultrasonic signal with a predetermined threshold value includes: and comparing the ultrasonic signal with the corresponding relation and a preset threshold value through the corresponding relation between the gas content of the gas-liquid two-phase flow and the ultrasonic signal obtained by an indoor simulation experiment.
In the above ultrasonic gas invasion while drilling monitoring method, preferably, the drilling state data includes an angular velocity value, an acceleration value and a differential pressure sensor display value of the drill collar.
In the above method for monitoring ultrasonic gas invasion while drilling, preferably, the comparing the drilling status data with predetermined status data, and the performing noise reduction processing on the ultrasonic signal according to the comparison result includes: and comparing the drilling state data with preset state data, obtaining the current drilling state according to the comparison result, and performing noise reduction processing on the ultrasonic signal according to the drilling state.
In the above ultrasonic gas invasion while drilling monitoring method, preferably, when the drill string is in a rotating state, the additional signal caused by the tangential flow velocity in the ultrasonic signal is removed by the angular velocity value; when the drilling state is tripping, removing signal noise caused by flow direction acceleration in the ultrasonic signals through the acceleration value and the speed value; when the drilling state data is pump stopping or circulation, the flow parameters obtained by the differential pressure sensor remove the relative flow speed caused by the flow direction acceleration in the ultrasonic signals.
The invention has the beneficial technical effects that: the gas containing condition of the underground annulus of the well drilling can be monitored in real time, and signals can be transmitted upwards in time to give an alarm if the condition exists; the device realizability is strong, and other additional functions are added to the accessible equipment, use widely more easily.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic structural diagram of an acoustic gas invasion while drilling monitoring device provided by the invention;
FIG. 2 is a schematic flow chart of a method for monitoring acoustic gas invasion while drilling provided by the present invention;
FIG. 3 is a schematic view of a curved cover mounting structure according to the present invention;
fig. 4A to 4C are schematic structural diagrams of the gas invasion monitoring nipple provided by the invention;
fig. 5 is a schematic view of ultrasonic monitoring provided by the present invention.
Reference numerals
The gas invasion monitoring short section comprises a gas invasion monitoring short section base body 1, a gas invasion monitoring short section cavity 2, a gas invasion monitoring short section inner wire hole 3, a curved surface cover body 4, an ultrasonic transmitting sensor 5, an ultrasonic receiving sensor 6, a signal processor 7, a data analyzer 8, a power supply battery pack 9, a data return unit 11, a drilling working condition monitoring module 10, a curved surface cover body plane 41, a data processing terminal 12, a 111 data transmitting unit, a 112 underground data receiving device, a 121 data analyzing device and a 122 alarm device.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the present invention is described in further detail below with reference to the embodiments and the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
Referring to fig. 1, the ultrasonic gas invasion while drilling monitoring device provided by the present invention specifically includes: the gas invasion monitoring short section and the data processing terminal are arranged; the gas invasion monitoring nipple comprises an ultrasonic transmitting sensor 5, an ultrasonic receiving sensor 6, a signal processor 7, a drilling condition monitoring module 10 and a data analyzer 8; the ultrasonic emission sensor 5 is used for emitting ultrasonic signals to the fluid in the downhole fluid annulus; the ultrasonic receiving sensor is used for ultrasonic signals reflected by fluid in the fluid annulus; the drilling condition monitoring module 10 is used for acquiring drilling state data; the data analyzer 8 is respectively connected with the ultrasonic receiving sensor of the signal processor 7 and the drilling condition monitoring module 10, and is used for comparing the drilling condition data with preset condition data, performing noise reduction processing on the ultrasonic signal according to a comparison result, comparing the processed ultrasonic signal with a preset threshold value, and obtaining gas invasion result data according to the comparison result; and the data processing terminal is in communication connection with the data analyzer 8 and is used for acquiring, displaying and outputting the gas invasion result. The data processing terminal can also comprise an alarm module, wherein the alarm module is used for comparing the gas well result with a preset alarm threshold value and outputting an alarm signal according to the comparison result.
In the above embodiment, the ultrasonic transmitting sensor 5 and the receiver may respectively adopt an ultrasonic doppler transmitting sensor and an ultrasonic doppler receiving sensor, and the signal processor 7 may also be a doppler signal processor, and during actual operation, the transmitting and receiving frequency values of the downhole drill collar annulus are mainly measured in real time through ultrasonic doppler, and then uploaded to a data processing terminal to obtain the downhole gas invasion condition, and in combination with a drilling condition monitoring unit, the occurrence and cause of overflow and the next step of measure are more timely assisted to be determined; the underground near-bit early-stage overflow monitoring can be realized, the reliability and the accuracy of the overflow monitoring are improved, the blowout prevention capacity in the drilling process is improved, the blowout accidents are reduced, the practical applicability is strong, and the large-scale popularization and use of a drilling team can be realized.
In the above embodiment, the data processing terminal includes a downhole data receiving device, a data analyzing device and an alarm device, the data receiving device receives and amplifies signals sent by the downhole data transmission unit, and then the signals are transmitted to the data analyzing and processing device through a cable, the data analyzing and processing device decodes, converts and arranges the signals transmitted downhole, a monitor is arranged in front of the host, abnormal data is found, comprehensive analysis and judgment are carried out on the abnormal data, whether the abnormal data is a working condition, and the environment changes cause abnormality or gas invasion, whether alarm and early warning are given or not is determined, the data can be further analyzed and utilized, and data preparation is provided for next well killing.
In a preferred embodiment of the present invention, the monitoring device further includes a data returning module 11 and a power supply battery pack 9, the data returning module is respectively connected to the drilling condition monitoring module 10 and the data analyzer 8, and is configured to send the gas invasion result obtained by the data analyzer 8 or the drilling condition data obtained by the drilling condition monitoring module 10 to the data processing terminal; the data feedback module comprises a sound wave signal transmitter and a data conversion processor; the acoustic signal transmitter is used for transmitting the drilling state data or the gas invasion result to the data processing terminal; the data conversion processor is used for converting the drilling state data or the gas invasion result into a preset data format and transmitting the data in the preset data format to the data processing terminal by the sound wave signal transmitter; the power supply battery pack 9 is used for providing electric support for the gas invasion monitoring nipple; the data returning unit 11 can adopt sound wave signal transmission, the data sending unit 111 sends sound wave signals, and the sound wave receiving unit 112 receives and transmits signals to a host for processing.
In the above embodiment, the drilling condition monitoring module 10 includes an angular velocity sensor, an acceleration sensor, and a differential pressure sensor; the angular speed sensor is used for monitoring the rotation state of the drill string; the acceleration sensor is used for monitoring the tripping state of the drill string; the differential pressure sensor is used for measuring the pressure difference between two holes in the inner wall of the drill collar and measuring the flowing condition and the flow rate of the fluid in the drill rod according to the pressure difference value. Specifically, angular velocity sensor is used for monitoring whether the drilling string is rotating, acceleration sensor is used for monitoring the acceleration of drilling string upper and lower direction, whether being in the tripping operation for the monitoring, differential pressure sensor is through measuring the pressure differential between two holes of inner wall (nipple joint hole lateral wall is separated one section distance from top to bottom and is opened two holes), whether have the size that flow takes place and the velocity of flow in the drilling rod through the differential pressure value measurement, these three kinds of sensors satisfy the requirement of judging the drilling string motion state basically, this operating mode data combines together with ultrasonic wave Doppler gas invasion monitoring signal, can realize whether take place the judgement that gas invades in the pit.
Referring to fig. 3 to 4C again, in a preferred embodiment of the present invention, the outer diameter of the gas-invasion monitoring nipple is the same as the outer diameter of the drill collar, and the inner diameter is smaller than or equal to the inner diameter of the drill collar; a plurality of cavities are formed in the outer wall side of the gas invasion monitoring nipple, and are used for arranging the ultrasonic transmitting sensor 5, the ultrasonic receiving sensor 6, the signal processor 7 or the data analyzer 8; a communication cable channel is arranged between the cavities and is used for arranging a communication cable; the cavity is externally provided with a curved surface cover body 4, and the curved surface cover body 4 is used for sealing the cavity.
In actual work, the standing gas invasion monitoring short section comprises a plurality of cavities 2, each cavity is sequentially provided with an ultrasonic Doppler transmitting sensor 5, a receiving sensor 6, a Doppler signal processor 7, a gas invasion data analysis processor 8 and a power supply battery pack 9 from bottom to top, each cavity of a drilling working condition monitoring unit 10 and a data return unit 11 is connected with a fine wire hole 3, mutual communication and power supply between underground monitoring units are achieved through a data transmission line, stability is high, signal transmission is accurate, the ultrasonic Doppler transmitting sensor 5 and the receiving sensor 6 are arranged on a plane 41 of the lower end of the short section corresponding to a cover body 4, and please refer to fig. 5. The curved surface cover body 4 is arranged on the surface of the ultrasonic Doppler gas invasion monitoring nipple, and in actual operation, the curved surface cover body 4 can be a plane which is ground flat and is opposite to the position of a cavity of the ultrasonic wave transmitting and receiving device, so that ultrasonic Doppler signal transmitting and receiving are facilitated. And comparing the corresponding relation of the ultrasonic signal liquid with a preset threshold value to judge whether gas invasion occurs or not.
Referring to fig. 1, based on the above embodiment, when the ultrasonic gas invasion while drilling monitoring device is installed, the specific process is as follows: processing an ultrasonic Doppler transmitting sensor, an ultrasonic Doppler receiving sensor, a Doppler signal processor, a gas invasion data analysis processor, a power supply battery pack 9, a data returning unit 11, a drilling condition monitoring unit and the like in the short section into proper sizes, and connecting and testing the short section; processing an experimental section, and leaving a proper position to place the underground gas invasion early monitoring device; completely sealing the ultrasonic Doppler gas invasion while drilling monitoring device, and connecting the ultrasonic Doppler gas invasion while drilling monitoring device with a drilling tool to lower the well bottom; establishing a data processing terminal comprising an alarm device, an acoustic wave receiving device and a data analysis device, and making contact with the underground ultrasonic Doppler gas invasion-while-drilling monitoring nipple; and analyzing signals sent by the underground short section in real time in the drilling process to determine the attenuation curve of the ultrasonic waves in the mud and the drilling working condition, and further determining whether gas invasion occurs, the occurrence degree and the occurrence reason. The ultrasonic gas invasion while drilling monitoring device can comprise an ultrasonic Doppler gas invasion while drilling monitoring nipple 1 and a data processing terminal 12, wherein the ultrasonic Doppler gas invasion while drilling monitoring nipple comprises an ultrasonic Doppler transmitting sensor 5, a receiving sensor 6, a Doppler signal processor 7, a gas invasion data analysis processor 8, a power supply battery pack 9, a drilling working condition monitoring unit 10 and a data returning unit 11, so that synchronous recording and uploading of the underground gas invasion condition and the drilling working condition are realized; the data processing terminal comprises a downhole data receiving device 112, a data analysis device 121 and an alarm device 122, realizes data analysis processing and early warning, can also further analyze, and provides data preparation for next well killing.
Referring to fig. 2, the present invention further provides an ultrasonic gas invasion while drilling monitoring method of the ultrasonic gas invasion while drilling monitoring device, the monitoring method includes: transmitting an ultrasonic signal to fluid in the fluid annulus from the outer wall of the drill collar; acquiring ultrasonic signals reflected by liquid fluid in the fluid annulus and current drilling state data; preprocessing the ultrasonic signal to generate an ultrasonic preprocessing signal; and comparing the drilling state data with preset state data, performing noise reduction treatment on the ultrasonic signal according to a comparison result, comparing the treated ultrasonic signal with a preset threshold value, and obtaining gas invasion result data according to the comparison result. In actual work, once ultrasonic signals are processed, suspected gas invasion is detected, and a uniform alarm is given; wherein the processing mainly comprises obtaining the gas content of the inner section of the drill collar so as to judge the gas invasion degree.
In the above embodiment, the comparing the processed ultrasonic signal with a predetermined threshold value includes: and comparing the ultrasonic signal with the corresponding relation and a preset threshold value through the corresponding relation between the gas content of the gas-liquid two-phase flow and the ultrasonic signal obtained by an indoor simulation experiment. Calculating the variation of the ultrasonic signal through a gas-liquid two-phase flow calculation model, and comparing the variation with the preset threshold; the drilling state data comprises an angular velocity value, an acceleration value and a differential pressure sensor display value of the drill collar; in actual work, the method for judging the drilling state according to the angular velocity value, the acceleration value and the differential pressure sensor display value is as follows:
and (3) normal drilling state: when the angular velocity value measured by the angular velocity sensor is a certain value and the acceleration measured by the acceleration sensor is a certain value (generally, the acceleration fluctuates slightly around a value of 0), the display value of the differential pressure sensor fluctuates within a small range of a certain value (depending on the flow velocity and the property of the drilling fluid).
Drilling stop state, pump on state: when the angular velocity value measured by the angular velocity sensor is 0 value and the acceleration measured by the acceleration sensor is 0 value, the display value of the differential pressure sensor is stabilized to a certain value.
Stopping drilling, stopping the pump: when the angular velocity value measured by the angular velocity sensor is 0 value and the acceleration measured by the acceleration sensor is 0 value, the differential pressure sensor displays a value of 0.
Tripping-out state: the angular velocity value measured by the angular velocity sensor is 0 value, the acceleration measured by the acceleration sensor is increased firstly, then is reduced and finally is stabilized to be 0 value, and the display value of the differential pressure sensor fluctuates within a certain small value range (depending on the drilling speed).
According to the state judgment method, in actual work, the ultrasonic gas invasion while drilling monitoring device judges whether gas invasion occurs in the annulus by the following judgment method: (1) the ultrasonic Doppler while-drilling gas invasion monitoring nipple comprises an ultrasonic Doppler transmitting sensor 5, a receiving sensor 6, a Doppler signal processor 7, a gas invasion data analysis processor 8 and a power supply battery pack 9, wherein a drilling working condition monitoring unit 10 and a data returning unit 11 are always in action in the underground nipple, Doppler signals are combined with drilling working condition data, the characteristics and the duration of ultrasonic signals of gas-containing drilling fluid are analyzed, the size and the occurrence time of the gas-containing rate of a cross section of a measuring position are determined, the gas invasion condition is judged, and the time is won for the next reaction. The gas invasion data are transmitted back in real time, and the underground data receiving device 112 and the data analysis device 121 in the surface host machine process the uploaded data and the chart in time in the computer. (2) Meanwhile, the drilling condition monitoring unit 10 uploads data in real time and is recorded by a ground host, the acceleration sensor can determine the ascending and descending acceleration of the drilling tool in real time, if gas invasion occurs in the drilling tripping stage, the high acceleration can better determine whether the gas invasion reason is caused by pumping or exciting pressure caused by too fast tripping, and meanwhile, the safety prevention function of monitoring and indicating that the tripping is not too fast, stably descending and ascending and avoiding the gas invasion is achieved. The angular velocity sensor and the acceleration are cooperatively judged to determine the rotation condition of the drilling tool, so that whether the drilling tool is in drilling or tripping can be known. The differential pressure sensor judges the flow velocity of the fluid in the annular space through differential pressure, and if gas invasion occurs in the ultrasonic Doppler signal processing, the flow velocity of the fluid caused by the rising of bubbles under pressure and the pushing of the fluid due to the inflow of formation fluid can be still detected under the condition of well shut-in. Whether gas invasion occurs and prediction of the size of the gas invasion can be judged more surely. (3) The method is characterized by finding that gas invasion is an important link of well control, particularly well control of a deep well, treating as early as possible after the gas invasion is determined, closing the well early, adopting a proper well control means according to the gas invasion condition, discharging the gas invasion timely, restoring and establishing shaft pressure balance, determining the reason and the degree of the well kick earlier according to the information such as the gas invasion symptom and the working condition provided by the underground gas invasion monitoring device while drilling, and providing important guarantee for avoiding the occurrence of well control accidents in engineering.
In the above method for monitoring ultrasonic gas invasion while drilling, the comparing the drilling status data with predetermined status data, and performing noise reduction processing on the ultrasonic signal according to the comparison result includes: when the drill string rotates, the ultrasonic signals comprise additional signals brought by tangential flow velocity, and the additional signals are removed by utilizing the angular velocity value; when the drilling state is tripping, the ultrasonic signal comprises additional flow direction acceleration, and the signal noise is removed by utilizing the acceleration value and the speed value; when the drilling state data is pump stopping or circulation, the flow direction speed value is contained in the ultrasonic signal, and the flow parameter obtained by the differential pressure sensor is used for removing the relative flow speed. The rotation, the drill pipe acceleration, the drill pipe speed, and the pump stop or circulation speed are all simultaneously added to the noise removal mechanism.
The ultrasonic gas invasion while drilling monitoring device and method provided by the invention can realize early overflow monitoring, improve the reliability and accuracy of overflow monitoring, improve the blowout prevention capability in the drilling process and reduce the occurrence of blowout accidents.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. 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 processor 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 processor 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.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. An ultrasonic gas invasion while drilling monitoring device, the monitoring device comprising: the gas invasion monitoring short section and the data processing terminal are arranged;
the gas invasion monitoring nipple comprises an ultrasonic transmitting sensor, an ultrasonic receiving sensor, a signal processor, a drilling condition monitoring module and a data analyzer;
the ultrasonic emission sensor is used for emitting ultrasonic signals to the fluid in the underground annulus; the ultrasonic receiving sensor is used for receiving ultrasonic signals reflected by fluid in the annular space in the downhole annular space;
the drilling condition monitoring module is used for acquiring drilling state data;
the signal processor is connected with the ultrasonic transmitting sensor and the ultrasonic receiving sensor and is used for preprocessing the ultrasonic signals to generate ultrasonic preprocessing signals;
the data analyzer is respectively connected with the signal processor and the drilling working condition monitoring module and is used for comparing the angular velocity value, the acceleration value and the differential pressure sensor display value of the drill collar in the drilling state data with preset state data to obtain a first comparison result, obtaining the motion state of the current drill collar according to the first comparison result, carrying out noise reduction treatment on the ultrasonic pretreatment signal according to the motion state, comparing the frequency value of the ultrasonic pretreatment signal after treatment with a preset threshold value to obtain a second comparison result, and obtaining gas invasion result data according to the second comparison result;
and the data processing terminal is in communication connection with the data analyzer and is used for acquiring, displaying and outputting the gas invasion result.
2. The ultrasonic gas invasion while drilling monitoring device according to claim 1, wherein the data processing terminal further comprises an alarm module, and the alarm module is used for comparing the gas invasion result with a preset alarm threshold value and outputting an alarm signal according to the comparison result.
3. The ultrasonic gas invasion while drilling monitoring device of claim 1, wherein the gas invasion monitoring nipple has an outer diameter consistent with the outer diameter of the drill collar and an inner diameter less than or equal to the inner diameter of the drill collar; and a plurality of cavities are arranged on the outer wall side of the gas invasion monitoring nipple and used for arranging the ultrasonic transmitting sensor, the ultrasonic receiving sensor, the signal processor or the data analyzer.
4. The ultrasonic gas invasion while drilling monitoring device according to claim 3, wherein a communication cable and a power supply cable channel are arranged between the cavity and used for arranging the communication cable and the power supply cable; and a curved surface cover body is arranged outside the cavity and used for sealing the cavity.
5. The ultrasonic gas invasion while drilling monitoring device according to claim 1, further comprising a data returning module, connected to the data analyzer, for sending the gas invasion result obtained by the data analyzer to the data processing terminal;
the data feedback module comprises a sound wave signal transmitter and a data conversion processor; the sound wave signal transmitter is used for transmitting the gas invasion result to the data processing terminal;
and the data conversion processor is used for converting the gas invasion result into a preset data format and then transmitting the preset data format back to the data processing terminal by the sound wave signal transmitter.
6. The ultrasonic gas invasion while drilling monitoring device of claim 1, wherein the drilling condition monitoring module comprises an angular velocity sensor, an acceleration sensor and a differential pressure sensor; the angular speed sensor is used for monitoring the rotation state of the drill string; the acceleration sensor is used for monitoring the tripping state of the drill string; the differential pressure sensor is used for measuring the differential pressure between two holes in the inner wall of the drill collar and measuring the flowing condition and the flow rate of fluid in the drill rod according to the differential pressure value.
7. An ultrasonic gas invasion while drilling monitoring device suitable for use in any one of claims 1 to 5, wherein the monitoring device comprises:
transmitting an ultrasonic signal to the fluid in the annulus from the outer wall of the drill collar;
acquiring ultrasonic signals reflected by the fluid in the well and current drilling state data;
preprocessing the ultrasonic signal to generate an ultrasonic preprocessing signal;
comparing the angular velocity value, the acceleration value and the differential pressure sensor display value of the drill collar in the drilling state data with preset state data to obtain a first comparison result, obtaining the current drilling state according to the first comparison result, performing noise reduction processing on the ultrasonic preprocessing signal according to the drilling state, comparing the frequency value of the processed ultrasonic preprocessing signal with a preset threshold value to obtain a second comparison result, and obtaining gas invasion result data according to the second comparison result.
8. The ultrasonic gas invasion while drilling monitoring method of claim 7, wherein comparing the frequency value of the processed ultrasonic preprocessing signal with a predetermined threshold value comprises: and comparing the frequency value of the ultrasonic preprocessing signal with a preset threshold value of the corresponding relation through the corresponding relation between the gas-liquid two-phase flow gas content and the ultrasonic signal obtained through an indoor simulation experiment.
9. The ultrasonic gas invasion while drilling monitoring method of claim 7, wherein denoising the ultrasonic pre-processed signal according to the drilling status comprises: when the drill string is in a rotating state, removing an additional signal caused by the tangential flow velocity in the ultrasonic preprocessing signal through the angular velocity value;
when the drilling state is tripping, removing signal noise caused by flow direction acceleration in the ultrasonic preprocessing signals through the acceleration value and the speed value;
when the drilling state data is pump stopping or circulation, the flow parameters obtained by the differential pressure sensor remove the relative flow speed caused by the flow direction acceleration in the ultrasonic preprocessing signal.
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| CN109458172B (en) * | 2018-11-01 | 2022-10-18 | 中国石油大学(华东) | Tool and method for monitoring gas invasion of marine riser |
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