Shield Temporary Blocking Agent
The shielding temporary plugging agent is composed of rigid
particles, fiber materials and softening particles. It is
deformable, easy to flow, can quickly form a shielding layer,
stable performance, and has a certain strength, can withstand a
certain pressure, can minimize the damage of killing fluid to the
gas reservoir, and the repair pressure recovery is not less than
95% of the original pressure. The preparation of shielding
temporary plugging agent is simple, the effect is obvious, and the
pressure is easy to recover after repair, which is conducive to the
follow-up development of gas field.
In view of the problems of low formation pressure coefficient,
serious water sensitivity, hot wash fluid leakage and polluted
formation, shielding and temporary plugging technology is
introduced to overcome the drawbacks of conventional well washing
and long drainage time and decreased production. The technology is
characterized by effective plugging and easy plugging removal.