METHOD OF OIL WELL COMPLETION Russian patent published in 2002 - IPC

FIELD: oil-producing industry, particularly, technology of completion of oil perforated nonflowing wells. SUBSTANCE: method includes forward motion of piston in tubing and determination of rated drawdown on formation; setting of packer onto tubing to depth ensuring rated value of drawdown with lowering of level of fluid hydrostatic column; lowering of piston down to packer level and local reciprocation of piston for the same or different height with the same or different speed until moment of pressure stabilization of fluid under piston; calculation of theoretical oil flow rate; installation of check valve in tubing; lowering of piston to level of expected installation of producing pump; determination of piston motion speed to provide for the same productivity of fluid removal by piston and pump; performance of a number of piston reciprocations and measurement of volume of pumped-out fluid and average volume for one stroke. Said volume is taken as actual for given pump with calculation of day production rate. EFFECT: higher quality of strainer and formation cleaning in the course of well completion with obtaining of larger fluid inflow for shorter period of time. 1 dwg