@Article{sl.2013.009.143,
AUTHOR = {Zhao Fenglan, Hou Jirui, Cao Shujun},
TITLE = {Experimental Evaluation of Water Control Agents in Low permeability Reservoir with Fractures},
JOURNAL = {Structural Longevity},
VOLUME = {9},
YEAR = {2013},
NUMBER = {3},
PAGES = {143--151},
URL = {http://www.techscience.com/sl/v9n3/42910},
ISSN = {1944-6128},
ABSTRACT = {Several water control agents, including pre-linked gel particles, emulsion microspheres, continuous chromium gel with different viscosity and underground starch graft copolymer gel were evaluated in lab. The properties such as
gelation time and gel strength of gel, and expansion of particles and microspheres
were tested at high temperature. Also, the injection pressure, plugging strength and
resistance factor were measured using the artificial low permeability cores with
fractures.<br/>
It was shown that, for the particle type water control (pre-linked gel particles and
emulsion microspheres), the particle size and distribution are crucial characters for
the plugging property. The particle size should be must be adaptable with the fracture width, not be too big or small, which is very difficult to control. Also, for
the continuous chromium with different viscosity, the added polymer concentration higher, the viscosity is higher, with higher plugging strength. Meantime, high
polymer concentration will lead to poor injectivity (high viscosity on ground) and
high cost. Therefore the plugging and strength should be coordinated. The starch
graft copolymer can be generated underground, which on ground is thin solution.
So it is easy to be injected into formation and has good plugging property. The
results show that the underground starch gel is more suitable to be used for water
control in low permeability formation.},
DOI = {10.3970/sl.2013.009.143}
}