论文部分内容阅读
新开发的低毒性聚合物/乳酸锆体系可以用于高矿化度、高硬度盐水，寻常用的铬交联体系相比，锆交联体系具有更低的毒性。低浓度制备的聚合物／乳酸锆微凝胶在两个不同的油田进行了矿场试验；取得了良好改效果：①在NorthBurbankUnit(NBU)的一个大的水驱单元中进行了一口井的注入试验，共注入69000bbl微凝胶溶液。注入前后的压降测试结果表明，流体流度下降了5－6倍；②在CBLongUnit（CBLU）的水驱单元中进行了一口注入井和一口生产井的微凝胶处理，注入井处理中共注入微凝胶溶液655O0bbl，注入剖面明显改善，55％的注入流体转向了低渗透层；几口邻近生产井的原总产量增加，增产范围为15－20BOPD，生产进的微凝胶处理降低了产出液的水油比。由于微凝胶中聚合物和交联剂的用量很少，大剂量的微凝胶处理在经济上是可行的
The newly developed low toxicity polymer / zirconium lactate system can be used for high salinity, high hardness brine, compared with the usual chromium crosslinking system, the zirconium crosslinking system has lower toxicity. Low concentration polymer / zirconium lactate microgels were field tested in two different fields; good results were achieved: ① One well was injected into a large waterflood unit at NorthBurbank Unit (NBU) Test, a total of 69000bbl microgel solution. The pressure drop test results before and after injection showed that the fluid flow rate decreased by 5-6 times; ② In the CBLUUU (CBLU) water flooding unit, one injection well and one production well were microgel treated, Micro-gel solution 655O0bbl, injection profile improved significantly, 55% of the injection fluid turned to the low permeability layer; a few mouth adjacent to the original production of the original production increased, the production range of 15-20BOPD, the production of micro-gel processing reduced production The ratio of water to oil. Due to the small amount of polymer and crosslinker used in the microgel, large doses of microgel treatment are economically viable