CN113008872B - Rock debris lithology laser identification method based on mineral components - Google Patents
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Abstract
The invention discloses a rock debris lithology laser identification method based on mineral components, which comprises the following steps: (1) Collecting and sorting different standard mineral samples, respectively detecting and processing laser information of the standard mineral samples by using a laser lithology intelligent recognition instrument, and establishing a mineral laser information database according to corresponding mineral names; (2) Detecting and processing laser information of the rock debris sample by using a laser lithology intelligent recognition instrument; (3) calculating and analyzing the mineral types and contents in the rock debris sample; (4) Intelligently identifying the lithology of the rock debris sample according to the result obtained in the step (3). The rock debris lithology laser identification method based on mineral components is good in applicability, can be suitable for identifying various lithology rock debris, can quickly and accurately identify the lithology of the rock debris drilled in the stratum on a construction site, effectively solves the problems of the rock debris identification technology, and has a great application prospect.
Description
Technical Field
The invention belongs to the technical field of petroleum geological exploration, and relates to a rock debris lithology laser identification method based on mineral components.
Background
The stratum lithology recognition has an important role in establishing a stratum lithology section to be encountered and finding an oil and gas resource reservoir, and the traditional method is to collect a stratum lithology sample to be encountered manually in the drilling process and observe a rock structure by means of a microscope and the like to recognize the lithology of the rock. With the development of rapid drilling technology, the traditional method is difficult to accurately identify the lithology of the rock debris drilled in the stratum.
Chinese patent publication No. CN104612675A discloses a method for quickly identifying lithology while drilling of a carbonate rock stratum, and provides a method for quickly identifying lithology while drilling of a carbonate rock stratum, which comprises the following steps: (1) judging different lithologies; (2) Respectively sampling rock fragments with different lithologies, analyzing and counting the pulse content of Ca and Mg in the rock fragments by using an X-ray fluorescent element logging technology; (3) Respectively sampling rock debris of centers with different lithology, and calculating the Mg pulse content and the Ca pulse content of the centers with different lithology, and the average distance between the Ca pulse content and the Mg pulse content and the Ca pulse content of the center points with different lithology; (4) Respectively calculating the average value of the Ca pulse content and the average value of the Mg pulse content of different lithologies to obtain a logging lithology identification standard and establish a lithology explanation plate. Although the method realizes accurate identification of lithology while drilling and timely judges whether the horizontal well track passes through the dolomite or not, and provides scientific basis for whether the track of the non-drilling section is adjusted and predicted, the method mainly identifies the carbonate rock, cannot identify the lithology of sandstone, mudstone and the like, and cannot completely meet the technical requirements of production fields.
Chinese patent publication No. CN 107489417A discloses an XRF logging-based sand shale lithology identification method by rock and ore composition inversion method, which mainly comprises the following steps: firstly, establishing a theoretical basis and an explanation principle of shale rock and ore composition inversion, then calculating lithology characteristic quantity parameters, lithology characteristic quantity indexes and derivative explanation ratio parameters, establishing an evaluation standard and parameter combination of shale lithology identification, and establishing a shale lithology identification explanation evaluation model and a process. Although the method greatly eliminates the influence of artificial subjective judgment factors, the rapid and quantitative lithology identification and evaluation are realized; the method can well solve the problems of unobvious drilling parameter characteristics, tiny and mixed rock debris, difficult lithology identification and large lithology identification error under the condition of rapid drilling, and provides reliable reference basis for oil and gas display discovery and rapid explanation, subsequent exploration, development, decision management and the like.
Therefore, the development of the laser identification method for the lithology of the rock debris, which can identify various lithologies, has practical significance.
Disclosure of Invention
The invention aims to overcome the defect of poor applicability of the prior art and provides a rock debris lithology laser identification method which can identify various lithologies, namely good applicability.
In order to achieve the purpose, the invention provides the following technical scheme:
a rock debris lithology laser identification method based on mineral components comprises the following steps:
(1) Collecting and sorting different standard mineral samples, respectively detecting and processing laser information of the standard mineral samples by using a laser lithology intelligent recognition instrument, and establishing a mineral laser information database according to corresponding mineral names;
(2) Detecting and processing laser information of the rock debris sample by using a laser lithology intelligent recognition instrument;
(3) Calculating and analyzing the mineral types and contents in the rock debris sample;
(4) Intelligently identifying the lithology of the rock debris sample according to the result obtained in the step (3).
The intelligent identification of the lithology of the rock debris sample is realized according to related geological theories and mineral composition and content information in the rock debris sample.
As a preferred technical scheme:
the rock debris lithology laser identification method based on mineral components comprises the following steps:
collecting and sorting standard mineral samples with known names, detecting and processing laser information of standard mineral with the wavelength range of 200-300 nm by using a laser lithology intelligent recognition instrument, and establishing a mineral laser information database according to the wavelength-spectrum intensity.
The rock debris lithology laser identification method based on mineral components comprises the following specific steps of (3):
(3.1) discrete laser information:
laser information of various minerals and rock debris in a discrete database at a wavelength interval of 0.05 nm;
(3.2) calculating the mineral content:
laser information of different minerals is respectively dispersed into L i (lambda), the laser information of the rock debris sample is dispersed into L (lambda), the laser information of the rock debris sample is the sum of the laser information of various minerals, and the sum satisfies the following conditions:
L(λ)＝C i ×L i (λ)；
l (lambda) is the laser information intensity corresponding to the rock debris wavelength lambda;
L i (lambda) is the laser information intensity corresponding to the ith mineral wavelength lambda;
C i the content of the ith mineral;
and (4) establishing an overdetermined equation set according to the formula, and calculating the content information of each mineral in the rock debris by using a least square method.
The rock debris lithology laser identification method based on mineral components comprises a laser, a spectrum detection and analysis device, a miniature industrial personal computer, a battery and a shell, wherein the laser lithology intelligent identification instrument (namely an XB-LL type laser lithology intelligent identification instrument developed by the Xiongbei (Shanghai) science and technology limited) comprises the laser, the spectrum detection and analysis device, the miniature industrial personal computer, the battery and the shell;
the laser, the spectrum detection and analysis device and the miniature industrial personal computer are respectively connected with the battery, and the laser and the spectrum detection and analysis device are respectively connected with the miniature industrial personal computer;
the miniature industrial personal computer and the battery are arranged in the shell, one end of the shell is provided with a through hole, and a laser and a spectrum detection and analysis device are arranged in the through hole;
the laser is used for emitting laser to irradiate the surface of the rock debris sample to induce and generate plasma, and the laser irradiates along the opening direction of the through hole;
the spectral detection and analysis device is used for receiving light emitted by the plasma, performing light splitting treatment to obtain spectral information, and finally sending the spectral information to the miniature industrial personal computer;
and the miniature industrial personal computer is used for controlling the laser and processing the spectral information to obtain the lithology information of the rock debris sample.
The intelligent laser lithology recognizer is used for recognizing the lithology of rock debris based on a laser-induced breakdown spectroscopy analysis method, and compared with the prior art, the intelligent laser lithology recognizer is designed in an open mode, an independent workbench is not required to be specially designed, a through hole of the intelligent laser lithology recognizer is abutted against the surface of a rock debris sample to be detected, the lithology information of the rock debris sample can be detected by starting a laser, the intelligent laser lithology recognizer is convenient to operate, compact in overall structure and good in portability.
The rock debris lithology laser identification method based on mineral components further comprises a touch screen, wherein the touch screen is used for giving an instruction to the miniature industrial personal computer and displaying lithology information of a rock debris sample, and is respectively connected with the miniature industrial personal computer and the battery; the touch screen is not only an input device but also a display device, and technicians in the field can select the independent input device and the independent display device, but the touch screen has better operation logic and visual display and is more in line with the use habits of current social users;
the energy of the laser emitted by the laser is 10 +/-0.5 mJ, the selected laser energy is in a certain range, the energy is overlarge, the power of the laser is large, the size is overlarge, the size and the weight of the device are increased, the portability of the device is influenced, the energy is too small, plasmas can not be generated on the surface of a rock debris sample effectively and sufficiently, and the identification accuracy is further influenced.
A method of laser identification of lithology of mineral constituent-based rock debris as described above, the housing comprising a handle, a body and a probe;
the main body and the handle are both of a cubic structure, one surface of the handle is attached to one surface of the main body, and the main body and the handle are connected to form an L-shaped plate structure integrally;
the probe is of a quadrangular frustum pyramid structure, the difference between the probe and the quadrangular frustum pyramid structure is that the bottom surface with a smaller area is circular, and the bottom surface with a larger area of the probe is attached to one surface of the main body in the L-shaped plate-shaped structure.
The shell structure of laser lithology intelligent recognition appearance is special, wholly is the rifle shape, and the overall structure of rifle shape is convenient for on the one hand handheld, and on the other hand is convenient to operate, and its probe (through-hole position) are located the muzzle of a gun position of rifle shape structure, and the user supports the detritus sample that awaits measuring with the probe when carrying out lithology discernment and opens the laser instrument and can accomplish the discernment.
According to the laser identification method for the lithology of the rock debris based on the mineral composition, the opening direction of the through hole is perpendicular to the bottom surface of the probe. The protection scope of the present invention is not limited thereto, and the specific opening direction of the through hole can be adjusted by those skilled in the art according to the actual situation, but the above opening direction is suitable from the viewpoint of processing and use.
According to the laser identification method for the lithology of the rock debris based on the mineral components, the shell is a plastic shell and is manufactured through an integral molding process. The material of the housing and the specific manufacturing process thereof are not limited thereto, and those skilled in the art can select the material according to the actual situation.
The rock debris lithology laser identification method based on the mineral composition is characterized in that the battery is mounted on the handle. The battery accords with the use habit on the handle.
According to the rock debris lithology laser identification method based on mineral components, the touch screen is positioned on one surface of the main body, which is far away from the probe, so that the operation and observation of a user are facilitated;
the battery is installed on the handle in a plug-in mode, so that the battery module is convenient to replace;
the handle is provided with a bulge matched with the fingers, so that a user can hold the handle conveniently.
Has the advantages that:
the rock debris lithology laser identification method based on mineral components is good in applicability, can be suitable for identifying various lithology rock debris, can quickly and accurately identify the lithology of the rock debris of the stratum encountered by drilling in a construction field, effectively solves the problems in the rock debris identification technology, and has great application prospect.
Drawings
FIG. 1 is a block flow diagram of a method for laser identification of lithology of mineral constituent-based rock fragments in accordance with the present invention;
FIG. 2 is a partial data table of the established mineral laser information database of the present invention;
FIG. 3 is a schematic structural diagram of the intelligent laser lithology recognizer of the present invention;
the system comprises a laser 1, a through hole 2, a spectrum detection and analysis device 3, a miniature industrial personal computer 4, a touch screen 5, a battery 6, a shell 7, a handle 71, a main body 72 and a probe 73.
Detailed Description
The following further describes the embodiments of the present invention with reference to the attached drawings.
An intelligent lithologic laser identifier is shown in fig. 3 and comprises a laser 1, a spectrum detection and analysis device 3, a miniature industrial personal computer 4, a battery 6, a touch screen 5 and a shell 7;
the laser 1, the spectrum detection and analysis device 3, the touch screen 5 and the miniature industrial personal computer 4 are respectively connected with the battery 6, and the laser 1, the touch screen 5 and the spectrum detection and analysis device 3 are respectively connected with the miniature industrial personal computer 4;
the shell 7 comprises a handle 71, a main body 72 and a probe 73, the main body 72 and the handle 71 are both of a cubic structure, one surface of the handle 71 is attached to one surface of the main body 72, the handle 71 and the main body are integrally of an L-shaped plate structure after being connected, a protrusion matched with a finger is arranged on the handle 71, the probe 73 is of a quadrangular frustum pyramid structure, the rectangular frustum pyramid structure is different from the quadrangular frustum structure in that the bottom surface with a smaller area is circular, the bottom surface with a larger area of the probe 73 is attached to one surface of the main body in the L-shaped plate structure, a through hole 2 is formed in the bottom surface with a smaller area of the probe 73, the opening direction of the through hole 2 is perpendicular to the bottom surface of the probe 73, a laser 1 and a spectrum detection and analysis device 3 are arranged in the through hole 2, a battery 6 is installed on the handle 71 in a plug-in mode, a touch screen 5 is installed on one surface of the main body 72, which is far away from the probe 73, and the shell 7 is a plastic shell and is manufactured through an integral forming process;
the laser 1 is used for emitting laser to irradiate the surface of the rock debris sample to induce and generate plasma, the laser irradiates along the opening direction of the through hole, and the energy of the emitted laser is 10 +/-0.5 mJ;
the light receiving direction of the spectrum detection and analysis device 3 is the opening direction of the through hole, the spectrum detection and analysis device 3 is used for receiving the light emitted by the plasma, performing light splitting processing to obtain spectrum information, and finally sending the spectrum information to the miniature industrial personal computer 4;
the miniature industrial personal computer 4 is used for controlling the laser 1 and processing the spectral information to obtain lithology information of the rock debris sample;
the touch screen 5 is used for giving an instruction to the micro industrial personal computer 4 and displaying lithology information of the rock debris sample.
The laser lithology intelligent identification instrument comprises the following use steps:
(a) The probe is abutted against the flat surface of the rock debris sample to be detected;
(b) The laser is controlled to be started through the touch screen (in the signal transmission process: the touch screen, the miniature industrial personal computer and the laser), the laser emits laser, the laser irradiates the surface of the rock debris sample to induce and generate plasma, the plasma emits light and the light is transmitted to the spectrum detection and analysis device through the through hole of the probe:
(c) The spectrum detection and analysis device receives light emitted by the plasma, performs light splitting processing to obtain spectrum information, and then sends the spectrum information to the miniature industrial personal computer;
(d) The micro industrial personal computer processes the spectral information to obtain lithology information of the rock debris sample, and then the information is sent to the touch screen;
(e) The touch screen displays lithology information of the rock debris sample.
A rock debris lithology laser identification method based on mineral components, which comprises the steps as shown in fig. 1:
(1) Collecting and sorting different standard mineral samples, respectively detecting and processing laser information of the standard mineral samples by using a laser lithology intelligent recognition instrument, and establishing a mineral laser information database according to corresponding mineral names, wherein the method specifically comprises the following steps:
collecting and sorting standard mineral samples with known names, detecting and processing laser information of standard mineral with the wavelength range of 200-300 nm by using a laser lithology intelligent recognition instrument, establishing a mineral laser information database according to the wavelength-spectrum intensity, wherein a part of data table of the established mineral laser information database is shown in figure 2;
(2) Detecting and processing laser information of the rock debris sample by using a laser lithology intelligent recognition instrument;
(3) Calculating and analyzing the types and the content of minerals in the rock debris sample, specifically comprising the following steps:
(3.1) discrete laser information:
laser information of various minerals and rock debris in a discrete database at a wavelength interval of 0.05 nm;
(3.2) calculating the mineral content:
respectively dispersing different mineral laser information into L i (lambda), the laser information of the rock debris sample is dispersed into L (lambda), the laser information of the rock debris sample is the sum of the laser information of various minerals, and the sum satisfies the following conditions:
L(λ)＝C i ×L i (λ)；
l (lambda) is the laser information intensity corresponding to the rock debris wavelength lambda;
L i (lambda) is the laser information intensity corresponding to the ith mineral wavelength lambda;
C i the content of the ith mineral;
an over-determined equation set is established according to the formula, and the information of each mineral content in the rock debris can be calculated by using a least square method;
(4) And (4) intelligently identifying the lithology of the rock debris sample according to the content information of each mineral in the rock debris obtained in the step (3).
The rock debris lithology laser identification method based on mineral components is verified to be good in applicability, can be suitable for identifying various lithology rock debris, can quickly and accurately identify the lithology of the rock debris drilled in the stratum on a construction site, effectively solves the problems of the rock debris identification technology, and has a great application prospect.
Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these embodiments are merely illustrative and various changes or modifications may be made without departing from the principles and spirit of the invention.
Claims (8)
1. A rock debris lithology laser identification method based on mineral components is characterized by comprising the following steps:
(1) Collecting and sorting different standard mineral samples, respectively detecting and processing laser information of the standard mineral samples by using a laser lithology intelligent recognition instrument, and establishing a mineral laser information database according to corresponding mineral names;
(2) Detecting and processing laser information of the rock debris sample by using a laser lithology intelligent recognition instrument;
(3) Calculating and analyzing the types and the content of minerals in the rock debris sample;
(4) Intelligently identifying the lithology of the rock debris sample according to the result obtained in the step (3);
the mineral laser information database is established by the following steps:
collecting and sorting standard mineral samples with known names, detecting and processing laser information of standard mineral with the wavelength range of 200-300 nm by using a laser lithology intelligent recognition instrument, and establishing a mineral laser information database according to the wavelength-spectrum intensity;
the step (3) is specifically as follows:
(3.1) discrete laser information:
laser information of various minerals and rock debris in a discrete database at a wavelength interval of 0.05 nm;
(3.2) calculating the mineral content:
laser information of different minerals is respectively dispersed into L i (lambda), dispersing rock debris sample laser information into L (lambda), wherein the rock debris sample laser information is the sum of various mineral laser information and meets the following requirements:
L(λ)＝C i ×L i (λ)；
l (lambda) is the laser information intensity corresponding to the rock debris wavelength lambda;
L i (lambda) is the laser information intensity corresponding to the ith mineral wavelength lambda;
C i is the content of the ith mineral;
and (4) establishing an overdetermined equation set according to the formula, and calculating the content information of each mineral in the rock debris by using a least square method.
2. The rock debris lithology laser identification method based on mineral components as claimed in claim 1, wherein the laser lithology intelligent identification instrument comprises a laser, a spectrum detection and analysis device, a miniature industrial personal computer, a battery and a shell;
the laser, the spectrum detection and analysis device and the miniature industrial personal computer are respectively connected with the battery, and the laser and the spectrum detection and analysis device are respectively connected with the miniature industrial personal computer;
the miniature industrial personal computer and the battery are arranged in the shell, one end of the shell is provided with a through hole, and a laser and a spectrum detection and analysis device are arranged in the through hole;
the laser is used for emitting laser to irradiate the surface of the rock debris sample to induce and generate plasma, and the laser irradiates along the opening direction of the through hole;
the light receiving direction of the spectrum detection and analysis device is the opening direction of the through hole, the spectrum detection and analysis device is used for receiving light emitted by the plasma, performing light splitting treatment to obtain spectrum information, and finally sending the spectrum information to the miniature industrial personal computer;
and the miniature industrial personal computer is used for controlling the laser and processing the spectral information to obtain the lithology information of the rock debris sample.
3. The rock debris lithology laser identification method based on mineral components as claimed in claim 2, further comprising a touch screen, wherein the touch screen is used for giving an instruction to the micro industrial personal computer and displaying lithology information of a rock debris sample, and is respectively connected with the micro industrial personal computer and the battery;
the energy of the laser emitted by the laser is 10 +/-0.5 mJ.
4. A method of laser identification of lithology of mineral constituent based rock fragments as claimed in claim 3 wherein the housing includes a handle, a body and a probe;
the main body and the handle are both of a cubic structure, one surface of the handle is attached to one surface of the main body, and the main body and the handle are connected to form an L-shaped plate structure integrally;
the probe is of a quadrangular frustum pyramid structure, the difference between the probe and the quadrangular frustum pyramid structure is that the bottom surface with a smaller area is circular, and the bottom surface with a larger area of the probe is attached to one surface of the main body in the L-shaped plate-shaped structure.
5. The laser identification method for lithology of rock debris based on mineral composition as claimed in claim 4, wherein the opening direction of the through hole is perpendicular to the bottom surface of the probe.
6. The method as claimed in claim 4, wherein the housing is a plastic housing, which is manufactured by an integral molding process.
7. A method as claimed in claim 6, wherein the battery is mounted on the handle.
8. The laser identification method for lithology of rock debris based on mineral composition as claimed in claim 7, wherein the touch screen is positioned on a side of the main body far from the probe;
the battery is installed on the handle in a plug-in mode;
the handle is provided with a bulge matched with the finger.
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