牛居油田高含水期开发的措施及效果

Measures and Results of the Development During High Water Cut in Niuju Oil Field

牛居油田是受岩性和构造双重因素所控制的多断块，多含油层系的油藏．从１９８３年底开始投产，初期和中期效果较好．１９８８年以后，部分油层水淹，从１９９０年起，油田进入低速开采阶段．近几年，运用了分层注水、间歇注水、油井堵水增排、衰竭采油井等技术，从而控制了含水上升率，减缓了油田产量递减速度．

iuju Oil Field is a reservoir of multi-fault block and multi-oil bearing zones controlled by lithological character and structure. Since it was put into production by the end of 1983,it had turned out high output in the initial and middle stages. However,water flooding took place in part of the oil bearing formation in 1988,then the oil field entered low-speed development stage in 1990. In the recent years,separate layer water injection,intermittent water injection,water shutoff,stimulation of drainage and oil well depleting etc. have been applied in this oil field,the increase of water cut has been controlled and the progressive decreasing of oil production has been retarded.