注水井劈分系数计算新方法研究

A New Method of Dividing Coefficient Calculation for Water Injection Well

唐圣来1 王怒涛1 黄炳光1 戈仁刚 戴敏3 张太权

( 1 西南石油大学, 四川成都610500; 2 中国海洋石油公司湛江分公司, 广东湛江524000;

3 西南油气田分公司川西北气矿采气作业区, 四川江油621700)

 Southwest Petroleum University,
Chengdu 610500, China

H ow to rea lize the reasonab le injection allo ca tion of
w ater in jection w e ll is a d ifficu lt problem. In order to
precise ly de term ine the in jection and production relationship
betw een the o il- w ater w e lls in the underg round, the key is
to establish the d iv id ing coeffic ient for w ate r vo lum es from
w ater- in jec tion w ell to deve lopm entw e l.l Through the study
on the forme r d iv id ing coe fficien t and the w e ll group pressure
analysis for in jection and production we lls, th is paper
establishes one kind o f new calcu la tion m ethod o f d iv id ing
coe fficient betw een the wa ter w e ll to the o il we l,l w hich is
based on the w ater driv e position defined by pressure w av e
fron t. Th is m ethod is sim ple in ca lcu lation and can
reasonab ly ca lcu la te the div iding wa ter in jection ra te, wh ich
can prov ide the theo ry basis for in jec tion w e ll a llo ca tion.