CN112987123A - Oil-gas field exploration method and device based on close planting mountain area - Google Patents
Oil-gas field exploration method and device based on close planting mountain area Download PDFInfo
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Abstract
The invention provides an oil and gas field exploration method and device based on a close planting mountain area, wherein the method comprises the following steps: identifying a section of a target work area from the air to generate a section identification result; performing surface three-dimensional digital outcrop measurement on the target work area to generate an outcrop measurement result; and performing surface shallow drilling on the target work area based on the profile identification result and the outcrop measurement result to determine an oil and gas favorable area and a favorable horizon of the target work area. The invention solves the problems of large manual workload and large error of data acquisition in the process of outcrop investigation in the prior art. Meanwhile, the beneficial region of oil and gas is predicted by adopting a surface shallow drilling mode, and guidance is provided for later well position deployment and fracturing test.
Description
Technical Field
The invention relates to the technical field of oil-gas exploration, in particular to an oil-gas field exploration method and device based on a close-planting mountain area.
Background
With the increasing of the oil-gas exploration degree in China, the quantity of unexplored resources is gradually reduced, and the exploration difficulty is very high when the exploration is mainly distributed on lands with complex geographic environments (such as mountaineering areas, deserts and ecological protection areas), deep sea and deep layers with unknown geological conditions and special lithologies (such as continental facies shale oil-gas). It is understood that to promote the discovery of these remaining hydrocarbon resources, it is necessary to develop new exploration techniques. In the prior art, the exploration procedure is generally to do two-dimensional earthquake first, then do three-dimensional earthquake, and finally locate the well for drilling, and the condition is only suitable for the areas with relatively simple landforms and landforms. The method covers the dense and complicated-landform mountaineering belts such as the Yanshan mountaineering belt and around Jingjin in the ground, has high environmental protection standard and high economic cost, and is not suitable for large-scale seismic exploration.
It can be understood that the traditional drilling mode mainly focuses on large-scale mechanical site construction, consumes a large amount of manpower, material resources and financial resources, cannot ensure a high success rate, and wastes a large amount of resources once drilling fails. In addition, the geological conditions of certain rock development areas are relatively complex and are not easy to be closely observed and found, so that the means for acquiring data is limited, and the acquired information is relatively unilateral. And the lithology identification has larger errors, for example, the mud shale is easy to weather, vegetation coverage of the exposed area is serious, the exposed head is mainly made of weatherproof conglomerate, shallow water deposition is easy to be mistaken, and a potential beneficial area is missed.
In summary, it is an urgent need to solve the problem of providing a low-cost and efficient exploration method for mountainous areas with serious vegetation coverage and complex topography.
Disclosure of Invention
According to the oil and gas field exploration method and device based on the close-planting mountainous area, the problems that in the prior art, the manual workload is large and the error of collected data is large in the process of outcrop investigation are solved. Meanwhile, the beneficial region of oil and gas is predicted by adopting a surface shallow drilling mode, and guidance is provided for later well position deployment and fracturing test.
In order to achieve the aim, the oil and gas field exploration method based on the close planting mountainous area comprises the following steps:
identifying a section of a target work area from the air to generate a section identification result;
performing surface three-dimensional digital outcrop measurement on the target work area to generate an outcrop measurement result;
and performing surface shallow drilling on the target work area based on the profile identification result and the outcrop measurement result to determine an oil and gas favorable area and a favorable horizon of the target work area.
Preferably, the identifying the profile of the target work area from the air to generate a profile identification result includes:
shooting the target work area by using an unmanned aerial vehicle to generate a plurality of shot pictures;
splicing the multiple shot pictures to generate a deep water deposition profile of the target work area;
and generating a profile recognition result according to the deepwater deposition profile.
Preferably, the performing surface three-dimensional digital outcrop measurement on the target work area to generate outcrop measurement results includes:
performing lithology identification and mineral analysis on the target work area;
collecting the section scale, the deposition thickness, the lithologic interface and the lithologic contact mode of the target work area;
depicting the outcrop of the target work area by using a base station receiving and mobile receiving method to generate an outcrop plane map;
performing three-dimensional detection on the outcrop of the target work area to generate a three-dimensional detection result;
and generating a outcrop measurement result according to the lithology identification result, the mineral analysis result, the section scale, the deposition thickness, the lithology interface, the lithology contact mode, the outcrop plane filling and the three-dimensional detection result.
Preferably, the oil and gas field exploration method based on the close planting mountainous area further comprises the following steps: generating the three-dimensional data outcrop model according to the outcrop measurement result;
performing surface shallow drilling on the target work area based on the profile recognition result and the outcrop measurement result to determine a favorable oil and gas area and a favorable horizon of the target work area, wherein the method comprises the steps of
Determining the stratum occurrence of the target work area according to the profile identification result and the outcrop measurement result;
calculating the underground distribution range of the exposed area of the favorable hydrocarbon source rock according to the stratum attitude;
generating a comprehensive histogram of the exposure area of the target work area according to the three-dimensional data exposure model;
and determining the oil and gas favorable area and favorable horizon of the target work area according to the stratum attitude, the distribution range, the outcrop area comprehensive histogram and the coring data, the logging data, the geological test data and the reservoir test data of the surface shallow drill.
Preferably, the oil and gas field exploration method based on the close planting mountainous area further comprises the following steps:
and performing a fracturing test on the favorable layer based on the superficial surface drilling position according to the favorable oil and gas area and the favorable layer of the target work area to generate oil testing data of the target work area.
In a second aspect, the present invention provides an oil and gas field exploration device based on a densely planted mountain area, the device comprising:
the aerial section identification unit is used for identifying the section of the target work area from the air to generate a section identification result;
the ground measurement unit is used for carrying out surface three-dimensional digital outcrop measurement on the target work area so as to generate outcrop measurement results;
and the favorable horizon determining unit is used for performing surface shallow drilling on the target work area based on the section identification result and the outcrop measurement result so as to determine the oil and gas favorable area and favorable horizon of the target work area.
Preferably, the air profile identification unit includes:
the unmanned aerial vehicle shooting module is used for shooting the target work area by using an unmanned aerial vehicle so as to generate a plurality of shot pictures;
the profile generation module is used for splicing the multiple shot pictures to generate a deep water deposition profile of the target work area;
and the recognition result generation module is used for generating a profile recognition result according to the deepwater deposition profile.
Preferably, the surface measurement unit comprises:
the mineral analysis module is used for carrying out lithology identification and mineral analysis on the target work area;
the data collection module is used for collecting the section scale, the deposition thickness, the lithologic interface and the lithologic contact mode of the target work area;
the plane filling map generating module is used for depicting the outcrop of the target work area by utilizing a base station receiving and mobile receiving method so as to generate an outcrop plane filling map;
the three-dimensional detection result generation module is used for carrying out three-dimensional detection on the outcrop of the target work area so as to generate a three-dimensional detection result;
and the outcrop measurement result generation module is used for generating outcrop measurement results according to the lithology identification results, the mineral analysis results, the section scale, the deposition thickness, the lithology interface and lithology contact modes, the outcrop plane mapping and the three-dimensional detection results.
Preferably, the oil and gas field exploration device based on the close planting mountain area further comprises: the outcrop model generating unit is used for generating the three-dimensional data outcrop model according to the outcrop measurement result; the advantageous horizon determining unit comprises:
the stratum attitude determination module is used for determining the stratum attitude of the target work area according to the profile identification result and the outcrop measurement result;
the distribution range calculation module is used for calculating the underground distribution range of the favorable hydrocarbon source rock exposure area according to the stratum attitude;
the histogram generating module is used for generating an outcrop area comprehensive histogram of the target work area according to the three-dimensional data outcrop model;
and the favorable horizon determining module is used for determining a hydrocarbon favorable area and a favorable horizon of the target work area according to the stratum attitude, the distribution range, the outcrop area comprehensive histogram, and the coring data, the logging data, the geological test data and the reservoir test data of the surface shallow drill.
Preferably, the oil and gas field exploration device based on the close planting mountain area further comprises:
and the test oil data generation unit is used for carrying out fracturing test on the favorable layer position based on the superficial surface drilling position according to the favorable oil and gas area and the favorable layer position of the target work area so as to generate test oil data of the target work area.
In a third aspect, the present invention provides an electronic device, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of a method for close-planted mountain based oil and gas field exploration.
In a fourth aspect, the invention provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of a method for close-planting mountain based exploration of an oil and gas field.
As can be seen from the above description, the oil and gas field exploration method and apparatus based on the densely planted mountainous area provided by the embodiment of the present invention first identify a profile of a target work area from the air to generate a profile identification result; then, performing surface three-dimensional digital outcrop measurement on the target work area to generate an outcrop measurement result; and finally, performing surface shallow drilling on the target work area based on the profile recognition result and the outcrop measurement result to determine an oil and gas favorable area and a favorable horizon of the target work area. According to the method, instrument equipment such as unmanned aerial vehicle photography, an element analyzer and a three-dimensional scanner are comprehensively applied in mountain area mud shale outcrop investigation with serious vegetation coverage and complex topography and landform for the first time, a set of low-cost and high-efficiency exploration method for densely planted mountain areas is formed, compared with the traditional mountain area exploration means, the method has the advantage of low cost, and in addition, the problems of large manual workload and large data acquisition error in the outcrop investigation process in the prior art are solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a first schematic flow chart of an oil-gas field exploration method based on a close-planting mountain area according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of step 100 of a method for close-planting mountain based exploration of oil and gas fields according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart of step 200 of a method for oil and gas field exploration based on densely planted mountainous areas according to an embodiment of the present invention;
FIG. 4 is a schematic flow chart of a second oil and gas field exploration method based on a densely planted mountain area according to an embodiment of the present invention;
FIG. 5 is a schematic flow chart of step 300 of a method for close-planting mountain based exploration of oil and gas fields according to an embodiment of the present invention;
FIG. 6 is a third schematic flow chart of a method for oil and gas field exploration based on densely planted mountainous areas according to an embodiment of the present invention;
FIG. 7 is a schematic flow chart of a method for oil and gas field exploration based on densely planted mountainous areas in an embodiment of the invention;
FIG. 8 is a diagram illustrating a method for exploring an oil and gas field based on a densely planted mountain area according to an embodiment of the present invention;
FIG. 9 is a first schematic structural diagram of a close-planting mountain based oil and gas field exploration device according to an embodiment of the present invention;
FIG. 10 is a schematic structural diagram of an aerial profile identification unit in an embodiment of the invention;
FIG. 11 is a schematic structural diagram of a ground measurement unit according to an embodiment of the present invention;
FIG. 12 is a second schematic structural diagram of a close-planting mountain area-based oil and gas field exploration device according to an embodiment of the present invention;
FIG. 13 is a schematic diagram of a configuration of an advantageous horizon determining unit according to an embodiment of the invention;
FIG. 14 is a second schematic structural diagram of a close-planting mountain area-based oil and gas field exploration device in an embodiment of the present invention;
fig. 15 is a schematic structural diagram of an electronic device in an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As will be appreciated by one skilled in the art, embodiments of the present invention may provide 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.
It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of this application and the above-described drawings, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
The embodiment of the invention provides a specific implementation mode of an oil-gas field exploration method based on a close-planted mountain area, and the method specifically comprises the following steps:
step 100: and identifying the section of the target work area from the air to generate a section identification result.
It is known that obtaining geological data through field geological investigation is one of the most common methods for exploring geological information in the prior art. Specifically, geological information is collected by manually inspecting field geologic bodies and using simple tools such as compasses, geological hammers and measuring scales, and exploration work of oil and gas information is realized. The method is realized on the basis of manual investigation and has larger workload. The method is greatly limited by terrain conditions, so that the mountainous areas with serious vegetation coverage and complex terrain and landforms are difficult to comprehensively know, the deposition characteristics in outcrops are lack of intuitive knowledge, and the collected data is limited. Meanwhile, the data acquired by using a simple measuring tool has large errors and is limited by the service level of the experimenters, and the data quality is uneven. With the rapid development of the unmanned aerial vehicle technology and the popularization of the 5G network, the unmanned aerial vehicle technology can be applied to geological exploration, and particularly, the unmanned aerial vehicle can be relatively close to a vegetation coverage area and shoot a target exploration area at multiple angles.
Step 200: and performing surface three-dimensional digital outcrop measurement on the target work area to generate an outcrop measurement result.
In the prior art, conventional mountain exploration by two-three dimensional seismic means is generally adopted. The method is based on seismic data, and the conventional three-dimensional seismic exploration is mainly the research on the aspects of field seismic data acquisition, indoor seismic data processing, seismic data interpretation and the like. The method comprises the steps of taking explosives as seismic sources or artificially exciting seismic waves to propagate a route and time in an underground rock stratum, detecting the buried depth and shape of an underground rock stratum interface, knowing an underground geological structure, further evaluating the oil-gas content of a working area, providing a drilling well position, deploying a drilling well and the like. The method determines the oil and gas position inaccurately through seismic data, and needs to establish a well position with wide azimuth, large connection piece and high density. The explosive used as a seismic source has certain operation danger and certain pollution to the environment. In addition, the method has better applicability to relatively simple areas such as hills, plains, deserts and the like, but has the problems of serious high-frequency information loss, incapability of meeting the requirements of technical indexes on data signal-to-noise ratio and resolution and the like when the seismic profile is processed due to large surface relief and various landform units of the mountainous area. In the aspect of construction, the exploration and development mainly take the site construction of large-scale machinery, a large amount of manpower, material resources and financial resources are consumed, a high success rate cannot be ensured, and a large amount of resources are wasted once the drilling fails.
In step 200, a multi-level, multi-dimensional, multi-level method is used to perform surface three-dimensional digital outcrop measurement on the target work area, for example: measurements were taken from four dimensions, point, line, face and volume, specifically: "Point" -ranging from single point lithology identification deep into the mineral analysis level. And collecting data such as section scale, deposition thickness, spreading size, rock interface, contact mode and the like of the section which is exposed poorly and difficult to be observed in the densely planted mountainous area. The 'face' -the surface morphology of the outcrop is finely researched by a base station + mobile receiving type, and the outcrop plane filling can be realized by the technology, so that the data is more specific and visualized. "volume" -detection of formation extension for three-dimensional angles within 50m of outcrop shallow area.
Step 300: and performing surface shallow drilling on the target work area based on the profile identification result and the outcrop measurement result to determine an oil and gas favorable area and a favorable horizon of the target work area.
Specifically, on the basis of aerial observation and earth surface outcrop observation of an unmanned aerial vehicle, well position distribution of exploration wells in favorable exploration areas is determined, earth surface shallow drilling is carried out, then lithology and oil-gas-water observation and analysis are carried out, and rock gas content is measured through a field analyzer.
As can be seen from the above description, according to the oil and gas field exploration method based on the densely planted mountainous area provided by the embodiment of the present invention, firstly, a profile of a target work area is identified from the air to generate a profile identification result; then, performing surface three-dimensional digital outcrop measurement on the target work area to generate an outcrop measurement result; and finally, performing surface shallow drilling on the target work area based on the profile recognition result and the outcrop measurement result to determine an oil and gas favorable area and a favorable horizon of the target work area. According to the method, instrument equipment such as unmanned aerial vehicle photography, an element analyzer and a three-dimensional scanner are comprehensively applied in mountain area mud shale outcrop investigation with serious vegetation coverage and complex topography and landform for the first time, a set of low-cost and high-efficiency exploration method for densely planted mountain areas is formed, compared with the traditional mountain area exploration means, the method has the advantage of low cost, and in addition, the problems of large manual workload and large data acquisition error in the outcrop investigation process in the prior art are solved.
In one embodiment, referring to fig. 2, step 100 further comprises:
step 101: shooting the target work area by using an unmanned aerial vehicle to generate a plurality of shot pictures;
step 102: splicing the multiple shot pictures to generate a deep water deposition profile of the target work area;
step 103: and generating a profile recognition result according to the deepwater deposition profile.
In the steps 101 to 103, an unmanned aerial vehicle is used for conducting downward shooting linear cruise to determine a rock head outcrop potential favorable area, the characteristic that most mountainous regions are shrub-woody plants is combined, the unmanned aerial vehicle is close to a vegetation coverage area relatively, horizontal 360-degree rotation and pitching angle adjustment of a pan-tilt camera are used, and a target exploration area is shot in multiple angles; aiming at the characteristics of different vegetation coverage degrees and different light brightness in mountainous areas, an exposure mode adopts an M gear (manual gear) to avoid overexposure/underexposure of a picture. The contrast between a dark area (stratum) and vegetation is enhanced mainly through software processing, rock outcrops are identified, and finally the rock outcrops area is determined; through unmanned aerial vehicle's cruise system, carry out linear cruise scanning to outcrop development district and shoot, cooperate the picture arragement software to complete deep water deposit profile map.
In one embodiment, referring to fig. 3, step 200 further comprises:
step 201: performing lithology identification and mineral analysis on the target work area;
step 202: collecting the section scale, the deposition thickness, the lithologic interface and the lithologic contact mode of the target work area;
step 203: depicting the outcrop of the target work area by using a base station receiving and mobile receiving method to generate an outcrop plane map;
step 204: performing three-dimensional detection on the outcrop of the target work area to generate a three-dimensional detection result;
step 205: and generating a outcrop measurement result according to the lithology identification result, the mineral analysis result, the section scale, the deposition thickness, the lithology interface, the lithology contact mode, the outcrop plane filling and the three-dimensional detection result.
In steps 201 to 205, the whole measurement process uses a method of 'point-line-plane-body' to perform fine and quantitative observation on outcrop. Preferably, the deep dissection is carried out on the interface hierarchy of the section, lithologic lithofacies combination and the like by utilizing instruments such as a handheld element analyzer, a three-dimensional laser scanner and the like. The specific contents are as follows:
1. the point-from single-point lithology identification to mineral analysis level, the handheld element analyzer and the finger gamma detector are added, and measurement and real-time gamma data reading can be carried out on more than 31 elements.
2. The 'line' -utilizes Focus S350 three-dimensional outcrop scanner and laser range finder, to appearing poor, the section that is difficult to be close the observation in close planting mountain area realizes the collection of data such as section scale, deposition thickness, exhibition size and rock interface, contact mode, image resolution reaches 1 hundred million 6 thousand 5 million pixels, and measurement accuracy can reach the millimeter level.
3. The surface-based three-dimensional high-precision mapping method is characterized in that the surface morphology of outcrops is finely researched through a (base station + mobile receiving type) three-dimensional high-precision mapping technology and a laser range finder three-dimensional high-precision mapping technology, wherein the most direct mode of the (base station + mobile receiving type) three-dimensional geological mapping is that real-time kinematic analysis is carried out while walking along the outcrops, and the method is relatively fast and can observe the outcrops which cannot be approached. The technique can realize the outcrop plane map filling, and make the data more concrete and visualized.
4. The 'body' -utilizes K2 ground penetrating radar to realize the stratum extension detection of three-dimensional angles in the range of 50m of the outcrop shallow region.
In an embodiment, referring to fig. 4, the method for oil and gas field exploration based on the close-planting mountainous area further comprises:
step 400: generating the three-dimensional data outcrop model according to the outcrop measurement result;
specifically, on the basis of step 205, a three-dimensional digital outcrop model and representation of the rock outcrop surface-shallow layer are established in combination with data of "point", "line" and "surface", and information such as the formation occurrence of any point can be directly measured because the model has GPS coordinates.
In one embodiment, referring to fig. 5, step 300 further comprises:
step 301: determining the stratum occurrence of the target work area according to the profile identification result and the outcrop measurement result;
specifically, a three-dimensional digital outcrop model is formed by utilizing unmanned aerial vehicle aerial observation and earth surface outcrop measurement, the stratum attitude of the three-dimensional outcrop model in at least two directions is determined, and the inclination and dip angle of the stratum in a three-dimensional space are determined.
Step 302: calculating the underground distribution range of the exposed area of the favorable hydrocarbon source rock according to the stratum attitude;
on the basis of step 301, the distribution range of the beneficial source rock exposure area extending underground is calculated.
Step 303: generating a comprehensive histogram of the exposure area of the target work area according to the three-dimensional data exposure model;
and establishing a comprehensive histogram of the outcrop area according to the three-dimensional digital outcrop model, and judging the underground combination form and development condition of the outcrop area by combining with formation occurrence data so as to determine the well position of the exploratory well on the earth surface.
Step 304: and determining the oil and gas favorable area and favorable horizon of the target work area according to the stratum attitude, the distribution range, the outcrop area comprehensive histogram and the coring data, the logging data, the geological test data and the reservoir test data of the surface shallow drill.
After the well location is determined, preliminary research works such as drilling and coring are carried out on the favorable area of the hydrocarbon source rock in a surface shallow drilling mode. The entire surface shallow prospecting is to core and study the characteristics of the formation lithology, well logging data, oil and gas bearing property, and the like in detail. The core sample is subjected to gas analysis by using the on-site analyzer, and the exploration well is comprehensively evaluated by combining the means of well logging, geological testing, reservoir data testing and the like after coring. The favorable oil and gas layer is optimized, and data support is provided for later exploratory well deployment and fracturing tests
In an embodiment, referring to fig. 6, the method for oil and gas field exploration based on close-planting mountainous areas further comprises:
step 500: and performing a fracturing test on the favorable layer based on the superficial surface drilling position according to the favorable oil and gas area and the favorable layer of the target work area to generate oil testing data of the target work area.
Specifically, an underground geological model is established by combining the comprehensive evaluation result of the pilot surface shallow drill, favorable interval distribution is determined, and later exploration well deployment and fracturing tests are carried out. The specific content comprises the following steps:
1. determination of advantageous horizons. And (3) establishing an underground geological model by analyzing characteristics such as stratum lithology, oil-gas-containing property and the like obtained by pilot surface shallow drilling, calibrating favorable positions of the shallow drilling, and preferably selecting 1-2 positions for subsequent fracturing tests.
2. And (5) performing fracture testing. Firstly, carrying out reaming engineering on the shallow drill on the earth surface so as to meet the requirement of large-scale hydraulic fracturing reservoir transformation. After the hole expansion is completed, the well cementation, the well logging and other work are sequentially carried out, then the perforation-fracturing work is carried out on the optimal layer, and finally the oil testing, the gas testing and the production seeking work are carried out on the exploration well through the ground test.
The application provides a novel method suitable for low-cost and efficient exploration in mountainous areas with serious vegetation coverage and complex landforms. Based on the thought of establishing a field digital geological model of key shale oil gas, unmanned aerial vehicle photography, an element analyzer, a three-dimensional laser scanner and other equipment are applied to screen, search and comprehensively and finely analyze the field outcrop of shale oil gas in the densely planted mountainous area with complex topography and landform, and various geological data are collected. The problems of large workload and large error of data acquisition in the traditional outcrop investigation process are solved. Meanwhile, the beneficial zone of shale oil gas is predicted by adopting a surface shallow drilling mode, and guidance is provided for later well position deployment and fracturing test.
To further illustrate the present solution, the present application takes a shale gas field in a Yanshan structure as an example, and describes a specific application example of the oil and gas field exploration method based on a densely planted mountain area, which specifically includes the following contents, and refer to fig. 7.
The area of the Yanshan structural belt is about 10 ten thousand square kilometers. The rescue conclusions at home and abroad consider that the deposition environment of the middle-life basin in the region is mainly onshore and shallow lake, the effective hydrocarbon source rock does not develop, and the storage condition is poor. The system is a blank oil and gas mining right area without breakthrough when multiple rounds of oil and gas investigation are carried out by building the country. By utilizing the ' Tiandi three-in-one densely planted mountainous area oil and gas exploration technology ' shown in figure 8, a mountain with abdomen is constructed in Yanshan mountain ' 28390, a flat basin is found to have a plurality of sets of thick layers rich in organic black shale, a well is autonomously deployed and drilled on page Luan 1, and then drilling and fracturing reconstruction are carried out; after testing and product obtaining, the industrial oil gas flow with the average 3.8 square of light crude oil and the average 3600 square of natural gas produced per day is obtained. The well was continuously cored from 1308 meters in the full wellbore section to reaming, fracturing and testing with an investment of only about 800 ten thousand dollars. And predicting 28390, wherein the equivalent weight of the oil and gas resources of the shale in the kingdom in the flat basin is 9.7 hundred million tons, and the amount of the oil and gas prospect resources of the Yanshan mountain structure is 24 hundred million tons. The natural resources department already brings \28390andthe flat basin is brought into an oil and gas exploration right and lead block project library. This is the first right-of-way block discovered and proposed by colleges. The successful drilling of the well breaks through the Yanshan construction with gravels without oil and gas discovery, opens up a feasible way for exploring and discovering industrial oil and gas reservoirs at the periphery of the core circle of Jingjin Ji capital with high efficiency, environmental protection and low cost, and has very important reference and popularization significance for the exploration of oil and gas basins under similar conditions at home and abroad.
S1: and discovering and screening the section by using an unmanned aerial vehicle.
Specifically, an unmanned aerial vehicle is used for performing downward shooting linear cruise to determine a potential beneficial area of mud shale outcrop, the characteristic that most mountainous regions are shrub-woody plants is combined, the unmanned aerial vehicle is correspondingly close to a vegetation coverage area, and a target exploration area is shot in multiple angles by horizontal 360-degree rotation and pitching angle adjustment of a pan-tilt camera; aiming at the characteristics of different vegetation coverage degrees and different light brightness in mountainous areas, an exposure mode adopts an M gear (manual gear) to avoid overexposure/underexposure of a picture. The software processes the contrast of a key dark area (stratum) and vegetation, identifies the outcrop of the shale, finally determines the outcrop area of the shale, then carries out linear cruise scanning shooting on the outcrop development area through a cruise system of an unmanned aerial vehicle, and matches with jigsaw software to obtain a complete deepwater deposition profile.
S2: and measuring the three-dimensional digital outcrop of the earth surface.
As mentioned above, the idea of point-line-plane-body is used in the observation process to perform fine and quantitative observation on outcrop. And deeply dissecting the interface level of the section, lithologic lithofacies combination and the like by using instruments such as a handheld element analyzer, a three-dimensional laser scanner and the like. The specific contents are as follows:
1. the point-from single-point lithology identification to mineral analysis level, the handheld element analyzer and the finger gamma detector are added, and measurement and real-time gamma data reading can be carried out on more than 31 elements.
2. The 'line' -utilizes Focus S350 three-dimensional outcrop scanner and laser range finder, to appearing the poor, the section that is difficult to be close the observation in close planting mountain area realizes the collection of data such as section scale, deposition thickness, exhibition cloth size and shale interface, contact mode, image resolution reaches 1 hundred million 6 thousand 5 million pixels, and measurement accuracy can reach the millimeter level.
3. "face" -the surface morphology of outcrop is finely studied by the (base station + mobile receiver) three-dimensional high-precision mapping technique and the laser rangefinder three-dimensional high-precision mapping technique, wherein the most direct way of the (base station + mobile receiver) three-dimensional geological mapping is to perform real-time kinematic analysis while walking along the outcrop, it can be understood that this method is relatively fast and can observe outcrop that cannot be approached. The technique can realize the outcrop plane map filling, and make the data more concrete and visualized.
4. The 'body' -utilizes K2 ground penetrating radar to realize stratum extension detection of three-dimensional angles in the range of 50m of the outcrop shallow region, and combines data of 'points', 'lines' and 'surfaces' to establish a three-dimensional digital outcrop model and representation of the earth surface-shallow layer of the mud shale outcrop.
S3: and performing surface shallow drilling on the target work area to determine the oil and gas favorable area and favorable horizon of the target work area.
On the basis of aerial observation and earth surface outcrop observation of an unmanned aerial vehicle, well position distribution of exploration wells in favorable exploration areas is determined, earth surface shallow drilling is carried out, then observation and analysis of lithology, oil, gas and water are carried out, and measurement of gas content of shale is carried out through an on-site analyzer.
S4: and (4) deploying exploratory wells and performing fracturing tests.
And establishing an underground geological model by combining the comprehensive evaluation result of the pilot surface shallow drill, determining favorable interval distribution, and carrying out later exploration well deployment and fracturing test.
According to the invention, instruments such as unmanned aerial vehicle photography, an element analyzer and a three-dimensional scanner are comprehensively applied in mountain area shale outcrop investigation with serious vegetation coverage and complex topography and landform for the first time, so that a set of low-cost and high-efficiency exploration technology for densely planted mountain areas is formed. Firstly, carrying out macroscopic, surface and internal all-dimensional information acquisition on a field outcrop, establishing a field digital geological model of a key shale oil gas outcrop, then determining the distribution of oil gas favorable areas through surface shallow drilling and shale oil gas field analysis, further completing the deployment and fracturing test of later exploratory wells, and compared with the traditional mountain exploration means, the cost is lower.
Based on the same inventive concept, the embodiment of the present application further provides an oil and gas field exploration device based on a close-planted mountain area, which can be used for implementing the method described in the above embodiment, as in the following embodiment. Because the principle of solving the problems of the oil and gas field exploration device based on the close planting mountainous area is similar to the oil and gas field exploration method based on the close planting mountainous area, the implementation of the oil and gas field exploration device based on the close planting mountainous area can be referred to the implementation of the oil and gas field exploration method based on the close planting mountainous area, and repeated parts are not repeated. As used hereinafter, the term "unit" or "module" may be a combination of software and/or hardware that implements a predetermined function. While the system described in the embodiments below is preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.
The embodiment of the invention provides a specific implementation mode of an oil and gas field exploration device based on a close-planting mountain area, and referring to fig. 9, the oil and gas field exploration device based on the close-planting mountain area specifically comprises the following contents:
an aerial profile recognition unit 10, configured to recognize a profile of the target work area from the air to generate a profile recognition result;
the ground measurement unit 20 is used for performing surface three-dimensional digital outcrop measurement on the target work area to generate an outcrop measurement result;
and the favorable horizon determining unit 30 is used for performing surface shallow drilling on the target work area based on the section identification result and the outcrop measurement result so as to determine the oil and gas favorable area and the favorable horizon of the target work area.
Preferably, referring to fig. 10, the air profile identification unit 10 comprises:
the unmanned aerial vehicle shooting module 101 is used for shooting the target work area by using an unmanned aerial vehicle so as to generate a plurality of shooting pictures;
a profile generation module 102, configured to splice the multiple shot photographs to generate a deep water deposition profile of the target work area;
and the identification result generation module 103 is used for generating a profile identification result according to the deepwater deposition profile.
Preferably, referring to fig. 11, the surface measuring unit 20 includes:
a mineral analysis module 201, configured to perform lithology identification and mineral analysis on the target work area;
the data collection module 202 is used for collecting the section scale, the deposition thickness, the lithologic interface and the lithologic contact mode of the target work area;
a planar filling map generating module 203, configured to use a base station receiving and mobile receiving method to depict the outcrop of the target work area, so as to generate an outcrop planar filling map;
a three-dimensional detection result generation module 204, configured to perform three-dimensional detection on the outcrop of the target work area to generate a three-dimensional detection result;
and the outcrop measurement result generation module 205 is configured to generate an outcrop measurement result according to the lithology identification result, the mineral analysis result, the profile scale, the deposition thickness, the lithology interface and lithology contact manner, the outcrop plane map and the three-dimensional detection result.
Preferably, referring to fig. 12, the close-planted mountain based oil and gas field exploration apparatus further comprises: the outcrop model generating unit 40 is configured to generate the three-dimensional data outcrop model according to the outcrop measurement result; referring to fig. 13, the advantageous layer position determination unit 30 includes:
a stratum attitude determination module 301, configured to determine a stratum attitude of the target work area according to the profile identification result and the outcrop measurement result;
the distribution range calculation module 302 is used for calculating the underground distribution range of the beneficial hydrocarbon source rock exposure area according to the stratum attitude;
the histogram generating module 303 is configured to generate an outcrop area comprehensive histogram of the target work area according to the three-dimensional data outcrop model;
a favorable horizon determination module 304 for determining a hydrocarbon favorable region and a favorable horizon for the target work zone based on the formation pay, the distribution horizon, the open-top region synthetic histogram, and the surface shallow drilling coring data, logging data, geostationary test data, and reservoir test data.
Preferably, referring to fig. 14, the close-planted mountain based oil and gas field exploration apparatus further comprises:
and the test oil data generation unit 50 is used for performing a fracturing test on the favorable layer position based on the superficial surface drilling position according to the favorable oil and gas area and the favorable layer position of the target work area so as to generate test oil data of the target work area.
As can be seen from the above description, according to the oil and gas field exploration device based on the densely planted mountainous area provided by the embodiment of the present invention, a fracture identification model is first established according to the core data, the acoustic logging data, and the density logging data of the target block, so as to identify fractures in the reservoir of the target block; secondly, establishing a fracture classification model according to the rock core data and the fracture identification model so as to classify the fractures; and finally, establishing an inclination angle quantitative characterization model according to the core data and the fracture identification model so as to quantitatively characterize the fracture inclination angle in the reservoir of the target block. The invention uses conventional logging data to identify fracture types and characterize fracture dip angles in the absence of imaging logging data.
An embodiment of the present application further provides a specific implementation manner of an electronic device capable of implementing all steps in the oil and gas field exploration method based on a close-planting mountain area in the foregoing embodiments, and referring to fig. 15, the electronic device specifically includes the following contents:
a processor (processor)1201, a memory (memory)1202, a communication Interface 1203, and a bus 1204;
the processor 1201, the memory 1202 and the communication interface 1203 complete communication with each other through the bus 1204; the communication interface 1203 is configured to implement information transmission between related devices, such as a server-side device, a power measurement device, and a client device.
The processor 1201 is used to call the computer program in the memory 1202, and the processor executes the computer program to implement all the steps of one of the above-mentioned embodiments of the close-planting mountain area-based oil and gas field exploration method, for example, the processor executes the computer program to implement the following steps:
step 100: identifying a section of a target work area from the air to generate a section identification result;
step 200: performing surface three-dimensional digital outcrop measurement on the target work area to generate an outcrop measurement result;
step 300: and performing surface shallow drilling on the target work area based on the profile identification result and the outcrop measurement result to determine an oil and gas favorable area and a favorable horizon of the target work area.
Embodiments of the present application also provide a computer-readable storage medium capable of implementing all the steps of a close-planted mountain based oil and gas field exploration method in the above embodiments, where the computer-readable storage medium stores thereon a computer program, and the computer program, when executed by a processor, implements all the steps of the close-planted mountain based oil and gas field exploration method in the above embodiments, for example, when the processor executes the computer program, the processor implements the following steps:
step 100: identifying a section of a target work area from the air to generate a section identification result;
step 200: performing surface three-dimensional digital outcrop measurement on the target work area to generate an outcrop measurement result;
step 300: and performing surface shallow drilling on the target work area based on the profile identification result and the outcrop measurement result to determine an oil and gas favorable area and a favorable horizon of the target work area.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the hardware + program class embodiment, since it is substantially similar to the method embodiment, the description is simple, and the relevant points can be referred to the partial description of the method embodiment.
The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
Although the present application provides method steps as in an embodiment or a flowchart, more or fewer steps may be included based on conventional or non-inventive labor. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of orders and does not represent the only order of execution. When an actual apparatus or client product executes, it may execute sequentially or in parallel (e.g., in the context of parallel processors or multi-threaded processing) according to the embodiments or methods shown in the figures.
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.
Claims (12)
1. An oil and gas field exploration method based on a close planting mountain area is characterized by comprising the following steps:
identifying a section of a target work area from the air to generate a section identification result;
performing surface three-dimensional digital outcrop measurement on the target work area to generate an outcrop measurement result;
and performing surface shallow drilling on the target work area based on the profile identification result and the outcrop measurement result to determine an oil and gas favorable area and a favorable horizon of the target work area.
2. The method for oil and gas field exploration based on close-planting mountainous areas as claimed in claim 1, wherein the step of identifying the section of the target work area from the air to generate a section identification result comprises the following steps:
shooting the target work area by using an unmanned aerial vehicle to generate a plurality of shot pictures;
splicing the multiple shot pictures to generate a deep water deposition profile of the target work area;
and generating a profile recognition result according to the deepwater deposition profile.
3. The close-planting mountain based field exploration method as claimed in claim 1, wherein said performing surface three-dimensional digital outcrop measurement on said target work area to generate outcrop measurement comprises:
performing lithology identification and mineral analysis on the target work area;
collecting the section scale, the deposition thickness, the lithologic interface and the lithologic contact mode of the target work area;
depicting the outcrop of the target work area by using a base station receiving and mobile receiving method to generate an outcrop plane map;
performing three-dimensional detection on the outcrop of the target work area to generate a three-dimensional detection result;
and generating a outcrop measurement result according to the lithology identification result, the mineral analysis result, the section scale, the deposition thickness, the lithology interface, the lithology contact mode, the outcrop plane filling and the three-dimensional detection result.
4. The close-planted mountain based oil and gas field exploration method according to claim 3, further comprising: generating the three-dimensional data outcrop model according to the outcrop measurement result;
performing surface shallow drilling on the target work area based on the profile recognition result and the outcrop measurement result to determine a favorable oil and gas area and a favorable horizon of the target work area, wherein the method comprises the steps of
Determining the stratum occurrence of the target work area according to the profile identification result and the outcrop measurement result;
calculating the underground distribution range of the exposed area of the favorable hydrocarbon source rock according to the stratum attitude;
generating a comprehensive histogram of the exposure area of the target work area according to the three-dimensional data exposure model;
and determining the oil and gas favorable area and favorable horizon of the target work area according to the stratum attitude, the distribution range, the outcrop area comprehensive histogram and the coring data, the logging data, the geological test data and the reservoir test data of the surface shallow drill.
5. The close-planted mountain based oil and gas field exploration method according to claim 1, further comprising:
and performing a fracturing test on the favorable layer based on the superficial surface drilling position according to the favorable oil and gas area and the favorable layer of the target work area to generate oil testing data of the target work area.
6. An oil and gas field exploration device based on close planting mountain area, its characterized in that includes:
the aerial section identification unit is used for identifying the section of the target work area from the air to generate a section identification result;
the ground measurement unit is used for carrying out surface three-dimensional digital outcrop measurement on the target work area so as to generate outcrop measurement results;
and the favorable horizon determining unit is used for performing surface shallow drilling on the target work area based on the section identification result and the outcrop measurement result so as to determine the oil and gas favorable area and favorable horizon of the target work area.
7. The close-planted mountain based field exploration device according to claim 6, wherein said aerial profile identification unit comprises:
the unmanned aerial vehicle shooting module is used for shooting the target work area by using an unmanned aerial vehicle so as to generate a plurality of shot pictures;
the profile generation module is used for splicing the multiple shot pictures to generate a deep water deposition profile of the target work area;
and the recognition result generation module is used for generating a profile recognition result according to the deepwater deposition profile.
8. The close-planting mountain based field exploration device according to claim 6, wherein said surface measurement unit comprises:
the mineral analysis module is used for carrying out lithology identification and mineral analysis on the target work area;
the data collection module is used for collecting the section scale, the deposition thickness, the lithologic interface and the lithologic contact mode of the target work area;
the plane filling map generating module is used for depicting the outcrop of the target work area by utilizing a base station receiving and mobile receiving method so as to generate an outcrop plane filling map;
the three-dimensional detection result generation module is used for carrying out three-dimensional detection on the outcrop of the target work area so as to generate a three-dimensional detection result;
and the outcrop measurement result generation module is used for generating outcrop measurement results according to the lithology identification results, the mineral analysis results, the section scale, the deposition thickness, the lithology interface and lithology contact modes, the outcrop plane mapping and the three-dimensional detection results.
9. The close-planted mountain based field exploration device according to claim 8, further comprising: the outcrop model generating unit is used for generating the three-dimensional data outcrop model according to the outcrop measurement result; the advantageous horizon determining unit comprises:
the stratum attitude determination module is used for determining the stratum attitude of the target work area according to the profile identification result and the outcrop measurement result;
the distribution range calculation module is used for calculating the underground distribution range of the favorable hydrocarbon source rock exposure area according to the stratum attitude;
the histogram generating module is used for generating an outcrop area comprehensive histogram of the target work area according to the three-dimensional data outcrop model;
and the favorable horizon determining module is used for determining a hydrocarbon favorable area and a favorable horizon of the target work area according to the stratum attitude, the distribution range, the outcrop area comprehensive histogram, and the coring data, the logging data, the geological test data and the reservoir test data of the surface shallow drill.
10. The close-planted mountain based field exploration device according to claim 6, further comprising:
and the test oil data generation unit is used for carrying out fracturing test on the favorable layer position based on the superficial surface drilling position according to the favorable oil and gas area and the favorable layer position of the target work area so as to generate test oil data of the target work area.
11. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the program performs the steps of the method of close-planted mountain based field exploration according to any one of claims 1 to 5.
12. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method for close-planted mountain based exploration of oil and gas fields according to any one of claims 1 to 5.
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