A Drilling Reporting and Evaluation Data System
- Rune Woie (Norsk Hydro a.s.) | Roald B. Sirevaag (Norsk Hydro a.s)
- Document ID
- Society of Petroleum Engineers
- SPE Drilling Engineering
- Publication Date
- December 1987
- Document Type
- Journal Paper
- 303 - 308
- 1987. Society of Petroleum Engineers
- 1.6.1 Drilling Operation Management, 1.12.1 Measurement While Drilling, 2.2.2 Perforating, 1.10 Drilling Equipment, 4.1.2 Separation and Treating, 1.9.4 Survey Tools, 5.1.2 Faults and Fracture Characterisation, 1.6 Drilling Operations, 4.1.5 Processing Equipment, 2.4.3 Sand/Solids Control, 1.11.2 Drilling Fluid Selection and Formulation (Chemistry, Properties), 1.14 Casing and Cementing, 1.10.1 Drill string components and drilling tools (tubulars, jars, subs, stabilisers, reamers, etc), 1.12.6 Drilling Data Management and Standards, 5.5.11 Formation Testing (e.g., Wireline, LWD), 4.5.10 Remotely Operated Vehicles, 1.7 Pressure Management, 4.5 Offshore Facilities and Subsea Systems
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Summary. The BORE system is a drilling reporting and evaluation data system specially designed for drilling engineering. It reports drilling information from the rig site to the drilling department office and to license partners and authorities. The system provides valuable well information on previous drilling experience to be considered when new drilling activity is planned and in the daily follow-up of operations. The BORE system is easy to use and powerful for fast, complete data presentation when particular problems are considered and for special studies.
The problem of tracing and using information from old wells is well known. This challenge increases with the amount of drilling activity, and the number of operation offices involved further complicates the picture. Another critical issue is the need for rapid transfer of experience to new employees. Our answer to these problems is the BORE data system. A system overview is given in Fig. 1. The main system is programmed in APL2 and uses the relational structured query language (SQL). It runs on a mainframe computer. A subsystem for data entry on mobile rigs has been developed to run on a personal computer (PC). This subsystem can be regarded roughly as the input part of the main system. It is written in a PC version of APL. Through the company's data-communication network, the system currently can be accessed from six to seven different office locations. The system is operated mainly by menu selections and partly by written queries to the data base.
A number of data-entry tables have been created for entering the required data. The number of records in these tables varies from one per well for the well-general-information table to several per day for the time-breakdown table. The 25 tables currently implemented are well general information, rig general information, daily status, time breakdown (Table 1), bits, bottomhole assemblies (BHA's), drilling parameters, casing/liner specifications, casing/liner cementing. plug/squeeze cementing, equipment failures, logging/repeat formation tester (RFT) runs, daily mud properties, daily mud consumption, surveys, leakoff tests, daily weather/rig performance, kickoffs, abandonment status, weekly status, evaluated pore pressure, evaluated temperature, formation tops, drilling-curve prognosis and actual progress, and lithologic description. All tables are equipped with examples of input data. In addition, checks are performed when data are entered to verify that the type and format are correct. All data are entered by hand with the exception of drilling parameters, which are transferred on a routine basis from the mudlogger's computer to our PC on the rig. Offshore data entry in BORE can he accomplished in two ways: (1) register data locally in the PC version of the system and transfer the registered data once a day to shore, or (2) use a terminal and work directly on the mainframe onshore. The option chosen is based on the availability and quality of data communication means. From mobile rigs, Alternative 1, the PC solution, is used. Data are entered each day in the relevant data-entry, tables. Early in the morning, a routine is started that collects all new sets of data entered since the previous morning and generates the information in a data-transfer file that is sent by telephone, received at the mainframe onshore, and automatically added to the rest of the information on the same well. For communication, either a satellite or a mobile telephone line is used by dialing. The communication line is occupied only 1 to 2 minutes for the file transfer. From fixed platforms involved in production drilling, we plan to use Alternative 2. Drilling parameters will then be sent directly from the drilling-data acquisition system offshore to the mainframe onshore. In either case, data can be entered as they become available and whenever it is convenient, as long as the report is completed by 7 a.m. Keeping a PC on the mobile rigs also allows a number of engineering calculation programs, a text editor, and other kinds of software to be available to help the engineers and supervisors perform their tasks efficiently.
Daily Drilling Reports
As the mainframe computer receives the daily transfer files from each rig, it automatically generates a daily drilling report that contains an extract of the data in the transfer file and prints this report at the different drilling and exploration offices. Later in the morning. after the data have been reviewed, another routine prepares a daily partner report for each well and also a special transfer file that contains information on all wells for the Norwegian Petroleum Directorate (NPD). The NPD transfer file is first downloaded to a PC. From there, it is sent by telephone to the NPD. The NPD receives the transfer file in its daily drilling reporting system (DDRS) and presents the data for internal use. All operators in Norway must report daily to the DDRS system, which is a NORD system with a SIBAS data base. The daily partner report is transferred to the word-processing/ telex system, from where it is dispatched. The content of the daily drilling report is manually written only once instead of four times [internal version, partner version, NPD version, and final well report (FWR) version] as before.
Presentation of Information
As stated previously, all data are stored in a relational data base, which is organized into tables where the well name is used as a common identifier. The presentation of the data in informative reports is handled in standard reports and query reports. Each standard report is run by selection from a menu. The report, are programmed in APL2 and use GRAPHPAK for the graphic presentation. (GRAPHPAK is the graphic package within the APL system.) The query reports are either modified-standard or purpose-written queries run by giving the name of the query. A query is a request for specific data in the data base. For the principle of a query, see Fig. 2.
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