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491 results about "Data interpretation" patented technology

Crack prediction method and device

The embodiment of the invention provides crack prediction method and device. The method comprises the following steps of: acquiring prestack common midpoint dynamic correction gathering seismic data and related parameters for carrying out crack prediction; generating corresponding index data according to the prestack common midpoint dynamic correction gathering seismic data and acquiring horizon data according to post-stack seismic data interpretation; generating conventional broad azimuth prestack common midpoint dynamic correction gathering data from the prestack common midpoint dynamic correction gathering seismic data according to conventional narrow azimuth prestack common midpoint dynamic correction gathering data; acquiring the relevant trace header information of each seismic channel according to the conventional wide azimuth prestack common midpoint dynamic correction gathering data; calculating the azimuth angle of each seismic channel by utilizing the acquired trace header information; acquiring the reflection amplitude of each seismic channel by utilizing a pickup time window by taking a destination layer as a pickup center; and carrying out elliptical fitting by utilizing the acquired azimuth angle and the acquired reflection amplitude so as to determine the crack direction and the crack density. The embodiment can improve the prediction precision of a crack reservoir stratum, can not only realize the three-dimensional prediction on the crack reservoir stratum, but also carry out the two-dimensional prediction, thereby improving the success ratio of a prospecting well and a drilling well.
Owner:PETROCHINA CO LTD

Multi-parameter logging method while drilling based on controllable neutron source

The invention relates to a multi-parameter logging method while drilling based on a controllable neutron source, which includes the steps of utilizing a multi-detector measuring system consisting of the D-T controllable neutron source, two thermal neutrons and two gamma detectors, sufficiently utilizing fast neutrons transmitted by the controllable neutron source to militate with atomic nucleuses of formation elements by means of special pulse and measuring timing sequence design, recording gamma energy spectrums, gamma time spectrums and thermal neutron time spectrums at different positions, and performing simultaneous measurement of multiple parameters such as formation density, formation porosity, formation fluid saturation, formation element content and the like with a nuclear logging instrument in a drilling process by means of different spectral resolution and data processing, so that valuation on formation lithology, formation porosity and formation fluid saturation while drilling are realized, the same parameter of the formation porosity and the formation fluid saturation can be measured by various methods, logging interpretation ambiguity is decreased, and accuracy and reliability of logging data interpretation are enhanced.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Reservoir imaging technique based on full-frequency-band seismic information mining

A reservoir imaging technique based on full-frequency-band seismic information mining is an oil seismic exploration data processing and interpreting technique, and utilizes the time-frequency decomposition method-the third type generalized S conversion which can accurately describe the local hierarchical structure of seismic signals. Firstly, an original three-dimensional seismic data volume is mapped into a four-dimensional full-frequency-band time-frequency energy data volume, a time-frequency amplitude data volume and a time-frequency phase data volume which all contain time, space and frequency domain; a vertical seismic profile, a time slice, a horizon slice and a stratum slice are extracted from two data volumes by utilizing the geological horizon information and the drilling and logging information; and meanwhile, on the basis of the above data volumes, a full-frequency-band energy difference slice and a reservoir thickness relative to time detection slice which are based on full-frequency-band information are further generated. The technique provided by the invention not only utilizes the information in a passband during conventional seismic data processing but also explores low-frequency and high-frequency information outside the passband, and is used for directly indicating the oil-gas reservoirs and analyzing imperceptible changes of the thickness, the space distribution and the internal structure of reservoirs, thereby improving not only the utilization ratio of the information in the seismic exploration data but also the reliability of seismic data interpretation.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY

Aerospace vehicle integration performance verification system based on data sharing

An aerospace vehicle integration performance verification system based on data sharing is divided into a preposition equipment area and a rear end equipment area. The rear end equipment area is divided into a test service area and an operation application area. The preposition equipment area, the test service area and the operation application area are connected through using an optical fiber network. The preposition equipment area is an information interaction link of an aircraft and the rear end equipment area and is formed by subsystem test equipment. The test service area is a core area of the aerospace vehicle integration performance verification system and comprises a test processing server, a data subscription server, a data interpretation server, a database server, a health monitoring and assessment server and a disk array. The operation application area is formed by a control operation platform and a data monitoring terminal. Through using various kinds of services provided by the test service area, functions of remote control/control instruction sending, parameter interpretation and health evaluation rule editing, test flow bookbinding, data display, data query, data playback and test report generation are realized.
Owner:CHINA ACAD OF LAUNCH VEHICLE TECH

Transponder Satellite Communication Navigation and Positioning System

A transponder satellite communication navigation positioning system relates to the field of space technology. The system is equipped with a high-precision atomic clock at a ground communication navigation reference station, and the satellite orbit data is given by the satellite orbit determination system; the satellite integrity is given by the monitoring system The data forms the navigation message, and the ranging code composed of pseudo-random codes forms an integrated baseband signal, which is modulated by spread spectrum to form a navigation signal carrier, which is transmitted through the antenna and forwarded by 3 to 9 satellites in a certain geometric distribution in space The device converts the frequency and forwards the downlink, and broadcasts the signal to the coverage area; the ground user terminal receiving device receives the navigation signal carrier, and despreads and demodulates it to obtain the navigation data, thereby determining the position, speed and time of the user terminal receiving device. The invention has the advantages of low investment, guaranteed accuracy, convenient and flexible system maintenance and management, and dual functions of navigation and communication, so that the navigation and positioning accuracy can reach meter-level precision or be better than meter-level precision.
Owner:NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI +1
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