区块整体油井堵水的决策技术研究

Study on Decision- Making Technique of O il Well Water Shutoff in Integral Tract

( 1 中国石油大学石油工程学院, 山东东营257061; 2 中原油田分公司采油工程技术研究院, 河南濮阳457001)

 College of Petro leum Engineering, China
U niversity of Petro leum, Dongying 257061, China

W a ter shuto ff o f o il w e ll needs to ca rry through in the
w ho le, and thew ho lew ater shuto ff needs to se lect the o ilw ell
w hich needs to be plugged in an entire tract. Three un itary
dec ision - m aking param eters, wh ich are wa ter- cu t r is ing
index, pressure index and rem ain ing o il sa turation, have been
put forw ard in th is paper. The first two o f them indicates h igh
pore path in the form ation, and the latter indicates m ater ia l
foundation. If w ater cut r ising index and rem a in ing oil
saturation index are b igger and pressure index of the o il w ell
is sm a ller, the urg ency o f o il w ell p lugg ing wa ter should be
much m ore. A decision - m ak ing param eter as a selected
figure of wa ter shu to ff in o il we ll is resu lted from three
dec ision- m ak ing param ete rs by fuzzy- judged me thod. The
m ethod is sim ply fo r se lecting o il we ll plugged w ater. The oil
w e lls wh ich shou ld be plugged w ater by the me thod are c lose
to those from dynam ic ana lysis, and the ra te is over nine ty
percent.
.