西南石油大学学报(自然科学版)

Previous Articles     Next Articles

Study and Application of Movable Gel for High-Temperature and#br# High-Salt Gasikule Reservoirs

LUO Yun1*, LUO Wenli2, WANG Qiang2, LIU Rui1   

  1. 1. School of Petroleum and Natural Gas Engineering,Southwest Petroleum University,Chengdu,Sichuan 610500,China
    2. State Key Laboratory of Enhanced Oil Recovery,Research Institute of Petroleum Exploration and Development,PetroChina,Haidian,
    Beijing 100083,China
  • Online:2016-04-11 Published:2016-04-11

Abstract:

Abstract:A novel movable gel for high-temperature and high-salt reservoirs is proposed in this paper. The movable gel consists
of the star-polymer(CA 2588)with temperature-resistance and salt-resistance and organic crosslinking agent(HT 2008).
Systemic investigation was carried out to examine the influence of star-polymer molecular weight,star-polymer concentration,
crosslinker dosage,and pH value on gel viscosity and gelation time. It was observed clearly by the environmental scanning
electron microscope that the interpenetrating polymer network structure was formed within the movable gel. The viscosity of
the movable gel(0.2% CA 2588+0.66% HT 2008)reached the peak value of 43 900 mPa·s in brine salinity of 117 000 mg/L
at 126 ℃. In addition,no obvious decrease in the viscosity of movable gel was found after 180 days. The movable gel with
star-polymer(CA 2588)and organic crosslinking agent(HT 2008)was used for deep profile control and gel-flooding in
Gasikule E13reservoirs,and achieved the desired effect.

Key words: Gasikule E13reservoirs, star-polymer with temperature-resistance and salt-resistance, organic crosslinking agent,
movable gel

CLC Number: