CAJ | 학술논문

为解决低渗透断块油田开发后期层间、层内矛盾引起的油井水淹问题，华北油田公司第二采油厂于1998—1999年在岔河集油田的岔15、39断块开展了黄原胶调驱结合的先导性试验。室内总结出了两个调剖剂配方，在岔15、39两个断块上进行了先导性矿场试验，结果表明两种配方都具有较好的改善注水井吸水剖面与增油降水效果，可以提高注入水的利用率和油藏的注水采收率。
위해결저삼투단괴유전개발후기층간、층내모순인기적유정수 엄문제，화북유전공사제이채유엄우1998—1999년재차하집유전적차15、39단괴개전료황원 효조구결합적선도성시험。실내총결출료량개조부제배방，재차15、39량개단괴상진행료선 도성광장시험，결과표명량충배방도구유교호적개선주수정흡수부면여증유강수효과，가이 제고주입수적이용솔화유장적주수채수솔。
To impede severe water floodout in Chaheji fault-bl ock sandstone reservoirs of low permeability at middle-late periods of their de velopment, a xanthane/Cr3+ aqueous gel is formulated and used for adjustin g the injectivity profile of water injection wells in fault-block C15 and then in C39 as a whole. The xanthic gel is composed of thickener xanthane 2 500 mg/L, crosslinker chromium acetate 1 000 or 1 200 mg/L, and bactericide formalin 1 00 0 or 1 500 mg/L and is characterized by low retention in the strata after the bl ockages formed being broken through and thus by low damage for the reservoir for mations, as shown in laboratory core plugging/flooding experiments. The gel trea tments of far borehole zones(treating radii 9—21 m) are performed in 4 water in jection wells of C15 and in 9 wells of C39 with 480—960 m3 of gel injected i n to one well. The laboratory performance properties of the xanthic gel and the re sults of gel treatments are described.