Considering the liquidity to solve the problem of water plugging, the SS304/DB2 is the best choice.
It is proved that the result is precise and can provide a theoretical basis for putting water plugging of horizontal wells into effect.
Research on change of flowing gel rheological property under low-frequency vibration is important for optimizing the profile control and water plugging effects.
In situ cross-linking polymer gel was widely used for water plugging in oilfield production, and a good result was achieved (Tang et al. 1996).
Gel in this experiment was originally used for water plugging in low-permeability reservoir with micro-fractures, so the gel strength was relatively small.
In such a grouting process, the initial water plugging effect is realized when the effective stress and total stress reaches equilibrium.
When Soares placed alligators in darkened tanks half filled with water, plugging their ears to eliminate sound cues, she found that the alligators reliably turned and snapped at disturbances caused by a single drop of water.
As the duration of the development, once the bottom water intrudes, it is difficult to identify the breakthrough locations, which makes water plugging be one of the main obstacles of horizontal well technology.
The discussions typically focus on the remaining oil potential and tapping method, such as subdivisional water injection, wells acidification, profile modification for injection wells and reservoir fracturing, reperforating and water plugging for producing wells (Ji 2014; Yuan 2014; Zhao 2014).
Three experiments were conducted with unconsolidated sand pack model to study the gel performance in water plugging under low-frequency vibration as in Fig. 1b, symbolizing the coupling application of low-frequency vibration oil extraction technology and gel displacement technology.
