The system succeeds the previous systems which processed the directional parameters of wells calculated by ES EVM, microEVM VT-20 (NOKIA prototype), on IBM PC computers that run under DOS. Those systems prevailed in almost all the regions of Russia, in the CIS and far-abroad countries and were effectively used for hole-making and during fire extinguishing operations at oil sites.
The new system allows a user to process the curvature parameters of specific wells and group of wells, which is highly important and makes the processes of well planning, sidetracking and hole-making very convenient. This system is implemented in some regions of Russia and Belarus.
Basic functions of the system:
Data entry and storage in data base
- typed on keyboard and entered form text files;
- equipment calibration parameters entry (metrological calibration test);
- data entry of group of wells. The term “a group of wells” is understood as several wells, which must be examined altogether (meaning their graphical expression, distance between them, etc.);
- data storage in system does not require any special DBMS;
- data entry can be interrupted and continued at any moment.
Quality control of data entered and being entered
Reliability of information affects the reliability of the processing results. That is why it is so important to detect errors caused by various reasons (operator’s negligence, cavities, etc.), to receive corresponding notifications and to correct those errors using our programs.
Interpolation of missing azimuths
Very often, there can be no magnetic azimuths in the processing interval because of metallic column or due to other reasons. To provide the correct processing, it is necessary to restore them.
Metrological calibration test corrections
It is well known, that any measurements may contain errors with constant and random components. The directional parameters even if they are measured with modern inclinometers are no exception. While the random components are non-correctable, the constant components might be fixed.
Processing of directional parameters using stable and exact algorithms
Provides calculation of:
- orthogonal coordinates X, Y, Z;
- cylindrical displacement coordinates and grid azimuth displacement angle;
- extension and vertical depth;
- curving intensity.
The calculation models applied within the developed system provide continuity of azimuth and zenith angles in contrast with conventionally described models which propose piecewise-constant nature of their change. These approaches allow user to prevent model errors while calculating the coordinates of the well bore, which can be 3-5 meters above mean sea level.
- Tabular for of results and mean-square errors caused by measurement errors
- Tables with marker beds
All the diagrams can be saved in image files in archives and printed in any scale. The user can interactively change colors, dimensions, angular rotation, etc.
Work with cluster of group of wells
This mode allows a user to create new wells in a cluster, new lateral holes, calculate distance from active (project, drilling) well to nearby wells of this cluster (group). The example of calculation of distance between the 2g well along the whole bore (from zero depth to 1337-m borehole bottom) from nearby wells No. 4,5,6 and 2g-project is given in the file cd2g_456.txt.
Variety of service and interface options
- review, editing, removal, rejection, supplementing of anecdotal or group data (groups are determined by various filters);
- generating data for interpretation systems;
- data output in form of Las-files, etc.