Safe distance between steam-stimulated well and fault in Xinzhuang Oilfield;

Through using stopping waterflooding and deep pumping,and single well huff and puff on the lower part of Es1 reservoir in Pucheng oilfield,comprehensive water cut has dropped and decline has slowed down.

During exploiting heavy oil in steam huff-puff production wells, Electric cables are usually used to heat produced liquid.

Resin-coated sand FSJ-Ⅴ for sand control in steam huff-puff production wells is prepared from a commercial bor-containing phenolic resin, FB, an amine containing curing agent, quartz sand of particle size 0.

5 m3 per well-job in average were performed in 10 steam huff-puff wells from March 2007 to March 2008 and 9 operations were successful in that the oil output rose and the water production dropped notably in a period exceeded the production cycle in some cases.

This SDA was successfully used in two steam huff-puff wells with 8 and 10 m3 of working fluid injected per well.

This combinational clay stabilizer in 10% aqueous solution was successfully used in antiswelling treatments of steam huff-puff wells at Gudao 24 well-times with treating radius being in range 1.