Shengli Oilfield hydraulic jet pump negative pressure relief technology plugging effect is good

On April 21, researchers at the Shengli Oilfield Oil Recovery Institute injected water into the ST3-8X567 injection well at Tuojiao Injection Station 28 to carry out the negative pressure relief plugging technology of the hydraulic jet pump . After the implementation, the formation liquid production volume was 25 cubic meters and the polymer 5 cubic meters M, played an immediate effect.

Polymer injection wells in the old area because polymer macrophages flow in the reservoir hole difficult to easily lead to high injection pressure, the injection can not go in and so on. Shengli Oil Production Plant a mine, four mines injection agglomeration block appears obvious rise in oil pressure, it is difficult to complete the note, the effective date of acidification plugging and other issues.

In response to the above problems, researchers at the Institute of Water Filling in Shunli Oilfield successfully developed the technology of negative pressure relief plugging of the reverse-flow hydraulic jet pump to achieve the smooth drainage of high-porosity and high-permeability polymer injection wells and the smooth flow of acid and acid residues . The technique has the advantages of simple column, convenient construction, safe and reliable, low cost and the like, and is suitable for the construction of sand discharge and thick oil well drainage row acid discharge polymer blockage blocking construction.

ST3-8X567 wells buried depth of 2151 meters, the implementation of measures before 14.4 MPa, can not be completed with the note. April 21, after the smooth return of the measures, liquid production 25 cubic meters, producing 5 cubic meters of polymer. It is reported that at present the technology has been implemented in Shengli Oil Production Plant 10 wells, have achieved good results.