METHOD FOR MONITORING NEAR WELLBORE PAYZONE REGION TREATMENT IN WELL AND DEVICE THEREFOR Russian patent published in 2008 - IPC E21B43/263 E21B43/25 E21B47/00 

FIELD: oil and gas.

SUBSTANCE: present invention relates to the oil recovery, namely to means of affecting the near wellbore payzone region (NWPR). A gage, recording equipment (RE), and NWPR treatment means, for example, a perforating gun with a perforation cable are run in the well in sequence, and depth positioning to the well log and well structure is carried out; the NWPR temperature and pressure are recorded. After that, the NWPR treatment is carried out, for example, perforating-explosive operations (PEO), i.e. the perforation of the well column, while simultaneously recording pressure and temperature and determining the well structure. Gaging is carried out simultaneously with the depth positioning to the well log and well structure. The gage is coupled with the RE on a wireline installed above the gage and providing for the measurement of temperature and pressure, the application and recording of the magnetic mark on the well production casing, the well structure determination, and the measurement of well rock radioactivity. The magnetic mark is set on the production casing by sending a current pulse or a command from the surface to the casing collar locator in the RE, and positioning to the nearest collar at a distance of no more than 5-7 m from the treatment interval is carried out. The temperature and pressure are recorded with simultaneous data transmission to the surface, and the said coupling is lifted. The following stage involves running the RE coupled with the NWPR treatment means, for example, with a perforation cable and a perforating gun in the well, while simultaneously monitoring the coupling passing to the magnetic mark set, the NWPR treatment being carried out in the interval required.

EFFECT: increased accuracy and efficiency of perforating-explosive operations (PEO) due to good positioning of explosive equipment relative to well log and real-time perforation monitoring.

3 cl, 3 dwg