METHOD FOR CONTROLLING PRESSURIZATION OF FORCE WELL Russian patent published in 2005 - IPC

FIELD: oil and gas extractive industry.

SUBSTANCE: during recording of pressure change pressure is measured at mouth at tubing column entrance and in inter-tubular space. Recording of pressure change is performed on basis of pressures comparison before and after stopping of well on basis of speed of pressure fall at mouth and in inter-tubular space after stopping of operation well and on basis of pressures comparison before and after well launch for forcing on basis of speed of pressure increase at mouth and in inter-tubular space after well launch. As criterion of pressurization estimation a calculated value of liquid flow, which enters and exits inter-tubular well space is taken.

EFFECT: higher trustworthiness.

1 ex