Geophysical survey of wells

Geophysical methods of research of wells - a complex of the physical methods used for studying of rocks in okoloskvazhinny and interborehole spaces and also for control of technical condition of wells. Geophysical surveys of wells are divided into two very extensive groups of methods - methods of logging and methods of borehole geophysics. The logging also known as trade or boring geophysics, is intended for studying of the breeds which are directly adjoining a well trunk (radius of research of 1-2 m). Often terms logging and GIS are identified, however GIS includes also the methods serving for studying of interborehole space which call borehole geophysics.

Researches are conducted by means of the geophysical equipment. At geophysical research of wells all methods of prospecting geophysics are applied.
Classification of the GIS methods

Classification of the GIS methods can be executed by the form the studied physical fields. In total more than fifty various methods and their versions are known. Name of groups metodovnazvaniye of methods
Elektricheskiyemetod of natural polarization (PS)
methods of current logging, the sliding contacts (MOSCOW TIME)
method of the seeming resistance (SR), lateral logging sounding (LLS), etc.
rezistivimetriya
method of the caused potentials (CP)
inductive method (IM)
dielectric method (DM)
Yadernyegamma-metod (hypermarket) or gamma logging (GL)
gamma gamma method (GGM) or gamma gamma logging (GGL)
neutron gamma method (NGM) or logging (oil and gas company)
neutron-a neutron method (NNM) or logging (NOC)
Termicheskiyemetod of the natural thermal field (MET)
method of the artificial thermal field (Meath)
Seysmoakusticheskiyemetod of acoustic logging
seismic logging
Magnitnyemetod of a natural magnetic field
method of an artificial magnetic field

Control of development of oil and gas fields

Independently there are geophysical surveys in the operational oil and gas wells applied to definition of an output of a well, technical condition of a column, a profile of inflow or a profile of acceleration performance, hydrodynamic parameters of layers. At the same time use thermometry; raskhodometriya; barometriya; STI; LM - a locator of couplings; acoustic shumometriya; electromagnetic defectoscopy and tolshchinometriya; SNGK - spectrometer neutron gamma logging; INNK-impulsny a neutron - neutron logging, hydrodynamic researches of wells (registration of curves of restoration of levels and restoration of pressure - KVU - KVD, hydrolistening) and some other types and methods of logging.