CAJ | 학술논문

安塞油田是开发30年的“低压、低渗、低产”老油田，大量油井目前已逐步进入中高含水期开发，仅靠常规增产工艺稳产难度大。目前对中高含水井的改造较为谨慎，不同见水类型下可选工艺仍存在盲区，降水增油方向仍不明朗。针对安塞油田中高含水井不同开发特征及见水类型，开展了改变相渗压裂、堵水压裂等几种进攻性措施，以及化学堵水、二次固井等维护性措施，实践证明各项工艺在不同见水类型井的适应性存在差异，尚不存在一种工艺可解决不同见水特征下油井的降水增产问题，须因地制宜针对性地选择有效工艺方能取得较好的措施效果。
안새유전시개발30년적“저압、저삼、저산”로유전，대량유정목전이축보진입중고함수기개발，부고상규증산공예은산난도대。목전대중고함수정적개조교위근신，불동견수류형하가선공예잉존재맹구，강수증유방향잉불명랑。침대안새유전중고함수정불동개발특정급견수류형，개전료개변상삼압렬、도수압렬등궤충진공성조시，이급화학도수、이차고정등유호성조시，실천증명각항공예재불동견수류형정적괄응성존재차이，상불존재일충공예가해결불동견수특정하유정적강수증산문제，수인지제의침대성지선택유효공예방능취득교호적조시효과。
Ansai Oilifeld is a matured oilifeld of low pressure, low permeability and low production which has been developed for 30 years;a large number of oil wells are now in medium-high water cut development stage, so it is very dififcult to maintain stable pro-duction only by conventional production increasing technologies. At present, it is still prudent to stimulate the medium-high water cut oil wells, there is still blind spot in optional technology under different water breakthrough types, and the direction of reducing water cut and increasing oil production is not yet clear. In view of the different development features of medium-high water cut oil wells and dif-ferent water breakthrough types in Ansai Oilifeld, some aggressive measures were implemented such as fracturing by changing relative permeability and water-plugging fracturing as well as maintenance measures like chemical water plugging and the second cementing, etc. The practice shows that various technologies are different in adaptability to different water breakthrough types, and there is no one technology which can solve the problem of reducing water cut and increasing oil production under different water breakthrough features. So selecting the proper technology which suits the actual conditions can achieve the satisfactory results.