Application Practice of Geological Data Informatization —— Taking Shengli Geological Logging Company as an Example

(Geological Logging Company of China Petrochemical Co., Ltd. Shengli Petroleum Engineering Co., Ltd.)

Taking the informatization application of geological data in Shengli Geological Logging Company as an example, this paper expounds how to establish the informatization mode of geological data through the development of information software and the establishment of two application modes of geological data, emphatically analyzes the important role of informatization application of geological data in production management, process monitoring and comprehensive evaluation, and finally points out that with the development of the times, the application of information technology in geological data will be more and more in-depth.

Keywords: geological data, information transmission, document library resources, enjoyment

Logging is the most basic technology in the process of oil and gas exploration and development, and it is the most direct means to find and evaluate oil and gas reservoirs. It has the characteristics of timely, diverse and rapid analysis and interpretation of underground information, and is called "the eye of drilling construction". Logging production can serve the drilling site 24 hours a day from the beginning of drilling to completion, and can be used for drilling, logging, cementing and other production and construction. By collecting engineering and geological information, instruments and technicians can find engineering anomalies and oil, gas and water displays in time, which plays an important role in engineering decision-making and well control construction.

1 composition of logging geological data

It is the job of logging site to obtain all kinds of data on site. The data collected at logging site includes field admission and field collection. On-site admission refers to the data collection and arrangement of on-site information of oil and gas exploration and development operations by using various logging systems and analytical instruments, including drilling logging, engineering logging, gas logging, core logging, cuttings logging, sidewall coring logging, fluorescence logging, geochemical logging, rock pyrolysis logging, light hydrocarbon logging, rock thermal evaporation hydrocarbon gas chromatography logging, nuclear magnetic vibration logging, core scanning logging, drilling fluid logging, etc. The data collected on site include all kinds of data generated by drilling fluid, logging, directional well, cementing, oil testing and other well site construction units, as well as all kinds of basic data and memorabilia such as the geographical location of the well site and drilling tool structure.

In addition, after completion, all site data should be interpreted, evaluated and accepted, and a complete completion data should be formed, and printed into a book, which will be used as a permanently preserved achievement document.

2. Establishment of geological data information operation system

Generally speaking, logging geological data can be divided into two categories: discrete data-providing support for later data application; File data-as a result of permanent storage and future reference.

2. 1 field geological data information transmission

2. 1. 1 field geological data collection

Field geological data mainly includes two kinds of data, one is real-time data generated by logging instruments, and the other is data collected and entered manually.

Shengli Geological Logging Company developed real-time data acquisition software on site, which realized real-time data reading, sorting, well site storage and remote real-time transmission of various logging instruments.

In terms of manual data acquisition, the application of multi-professional data integration acquisition technology enables the field manual acquisition software to meet the requirements of data entry, import and processing in geology, engineering, logging, oil testing and management reports, and can be remotely transmitted to the rear base at any time through transmission function.

2. 1.2 data transmission and storage

Shengli Geological Company used satellite, 3 G, GPRS and other technologies to establish an omni-directional transmission network, developed special transmission software and receiving and warehousing software, and realized remote real-time transmission of all geological data on site.

In data storage, various server and cross-database platform storage technologies are applied to realize data storage and backup. According to the requirements of each party in the well site for their own data, a distributed storage mode of data is established, and the geological data of the well site can be entered into the database of each demander in real time.

2.2 the establishment of geological literature information model

2.2. 1 development of geological data collation system

In the past, it was a very time-consuming and laborious job to sort out on-site geological data. Technicians have to manually sort out various reports and draw various required geological logging maps according to field data. In order to reduce the work intensity of field technicians and, more importantly, meet the consistency requirements of field discrete data and report data, Shengli Geological Logging Company applied flexible report template customization and graphic drawing technology to realize the automatic generation and processing of logging field and completion reports and drawings, which not only met the efficiency improvement, but also met the data consistency requirements, and provided a basic guarantee for the later deepening application of geological data.

2.2.2 Development of completion data audit system

The most important achievement of geological logging company is the summary report of completion geology and related comprehensive logging chart of completion. Both logging companies and exploration and development units put forward high requirements for the quality of completion data. Therefore, the Geological Logging Company has developed a completion data auditing system, which has improved the automation level of quality inspection by establishing a standardized logging completion data auditing network operation process, and formed an information platform integrating data sorting, auditing, archiving, cataloging and drawing. The system also realizes the dynamic generation of text reports, schedules and drawings in the completion summary report and the cascade display of source data, and realizes the functions of logical verification, automatic comparison, marking differences, electronic signature, data scoring and so on. In addition, by integrating SMS and RTX communication tools to push instant messages, all-round coverage of quality inspection information is realized.

3 geological data * * * enjoy the establishment of application model

3. 1 Development of geological data real-time publishing system

The geological data publishing system of Shengli Logging Company adopts the user identity authentication technology marked by China Petrochemical mailbox, which realizes the unification of field geological data information transmission application system and meets the requirements of information system integration and integrated development. Real-time data digital instrument display, dynamic graphics, multi-well profile comparison, well deviation drawing and other applications meet the needs of users for various display forms of geological data.

In addition, in order to meet the needs of mobile office, a mobile device data publishing system is developed in time, and the display function of logging data, curves, charts, profiles and so on on the mobile terminal is realized.

3.2 Development of Geological Data Document Library System

The purpose of this system is to establish a centralized integrated management platform for electronic documents of logging geological data, form an electronic document library corresponding to the company's paper data, and realize the integrity, standardization and permanent preservation of electronic documents. And through the advantages of network resources for * * * to enjoy efficient and convenient application.

There are nearly 50 kinds of geological data, including reports, graphics and pictures, laboratory reports, etc. The report documents include geological observation records, core description records, geological summary report of completion, etc. , all in word format; Graphic picture files include cuttings logging comprehensive map and core logging comprehensive map, etc. , all in -jpg image formats; Laboratory reports include paleontological analysis and appraisal report, geochemical logging results table, etc. The format is word document and excel data table. There are two ways to store files. One method is to automatically create a folder according to the well name in the storage path and store the report of the well in this folder. The other is to store all similar reports in the same folder.

The system can complete the functions of remote submission, retrieval and query, centralized management, summary and analysis of data. Through the organic storage and management of discrete documents, safe and efficient information query and information application can be realized.

4 the role of geological information application

With the need of oil and gas exploration and development, more and more units need to know the drilling performance of the drilling site in time. The application of geological data informatization provides source information for exploration and development and realizes the sharing of information resources. In the process of exploration and development, from geological design to logging construction site, monitoring and analysis while drilling, formulation of technical measures, production decision-making and command, comprehensive research, etc. Informatization makes the application of logging geological data information more and more extensive, and plays an increasingly important role in the process of oilfield exploration and development.

4. 1 data resources * * * to provide basic guarantee for the construction of "digital" oil fields.

All important decisions of petroleum enterprises are inseparable from the analysis of geological data, and providing information services timely, accurately and comprehensively has become a necessary means for oil fields to enhance their core competitiveness. Logging geological data provides all the information from geological design to completion data processing and application, which solves the digitization problem of logging data source for oilfield exploration general library, reduces the error in the process of data repetition, improves the utilization efficiency of data, realizes the goals of data sharing, dynamic tracking, information linkage, transparency and high efficiency, and provides a basic guarantee for building a unified application platform and building digital oil to carry out effective work.

4.2 Play an important role in production management, process monitoring and command and decision-making.

Traditional logging information is recorded or transmitted by hand, which has low utilization efficiency. The research and development of the integrated software system of well site information collection, transmission, data collation and acceptance ensures the accuracy of well site geological data collection and storage, and enhances the credibility of first-hand data of well site. Its automatic functions, such as report, report printing, comprehensive drawing and completion data review, reduce the labor intensity of field technicians, shorten the data processing time of an exploration well from about 1 month to about 5 days, optimize the workflow, reduce the production cost and improve the economic benefits of exploration.

The direct interaction between technicians and managers in the field has effectively reduced intermediate links, greatly reduced the problems such as stopping drilling and waiting caused by downhole during drilling, thus optimizing the production management process, effectively shortening the drilling cycle and improving the overall efficiency of drilling and logging. The rear experts know all the drilling performance through real-time geological data, and make follow-up analysis from five aspects: horizon prediction and division, source rock evaluation, formation pressure evaluation, oil and gas reservoir evaluation and complex situation, predict the key links of drilling construction in the next step, and put forward conclusions and suggestions to the superior production decision-making department, providing reference for timely command and decision-making, improving the efficiency and quality of production decision-making and saving exploration costs.

4.3 play an important role in comprehensive evaluation and application research of geological data.

It is an important task to give full play to the information value of logging geological data, excavate and deepen the application of data, establish platform tools for research while drilling and later, and improve the refined level of exploration and production application.

With accurate and rich field geological data, combined with the data of adjacent wells, researchers can conduct comprehensive research and provide reference for reservoir description, regional research and well location deployment. Shengli Geological Logging Company combines regional data such as geology, geophysical prospecting, logging and oil testing that cannot be obtained in the field with geological data returned from the field. With the help of advanced interpretation workstation, expert system and evaluation while drilling software system, the real-time interpretation of logging data, real-time prediction of pressure and prediction of formation to be drilled have been completed successively, which not only provides high-quality and efficient technical support for the front, but also puts forward suggestions for the deployment of exploration and development wells in Shengli Oilfield in the next step.

5 conclusion

Today, with the gradual refinement of exploration field and the rapid development of information technology, the combination of information technology and exploration and production will be closer and closer. For example, the development and application of three-dimensional technology will play a role in improving exploration accuracy and guiding exploration drilling; The application of high-speed network and the establishment of local area network in well site can expand various applications in well site; Establishing a perfect integrated platform and virtual reality technology in the well site will better realize the collaborative work of experts.

It can be said that the application of geological information is endless. In the future, we will follow the general direction of "digitalization, intelligence and intellectualization" of oilfield enterprises, closely follow the development of information technology and the changes of production management requirements, gradually complete the integration, coordination and upgrading of existing systems, gradually deepen and enhance the application and development of information resources, establish a perfect comprehensive information platform for well sites, and make continuous efforts in the direction of "intelligent logging" to provide first-class information technology support for oilfield exploration, development and construction.

refer to

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Pudenggang Integrated logging information platform and its application in exploration and development [J]. Logging Engineering, 20 10 (12): 30 ~ 33.