摘要
根据任丘潜山油藏高含水期的开发特点及堵水治理的现状，提出了今后堵水的选井原则及对策。介绍了１９９５年以来，针对不同油藏条件和井况所采取的堵水措施，施工１２井次，可对比的９井次，有效率达１００％，年累计增油１．１１×１０４ｔ，平均单井增油１１１６ｔ。指出：针对不同情况采取的堵水、复堵、注水泥等措施可有效封堵主要出水裂缝，控制含水率上升，减缓产量递减；为提高堵水效果，要加大堵剂用量、封堵半径，油井要有较好的含油层段接替，堵水后要保持产液量；因堵水造成的对含油缝洞的污染，可在酸化解除污染后再进行有机复堵。
According to the development characteristic and water plugging current situation of Renqiu buried hill reservoir in high water cut period,the principle of well selection and the countermeasure of coming water plugging is presented.Since 1995 the measures taken for water plugging in accordance with various reservoir and well conditions are introduced.12 wells were under construction,efficiency is 100%,incremental oil has 1.11×10 4 t/a, average incremental oil has 1116t per well.It has been pointed out that these measures for water plugging,replugging and well cementing may plug main water productive fractures,control water cut raising,and slow down the production decline.In order to increase plugging agent volume and plugging radius,wells having better succedent oil bearing intervals should be selected.After water plugging these wells are able to keep considerable fluid production.The contamination of oil bearing fractures due to water plugging can be removed by acidization,then these fractures are replugged by organic methods.
关键词
油气藏
高含水期
堵水
效果
Renqiu oilfield,buried hill reserroir,high water cut period,water plugging,measure,effect
