摘要
针对国内外石油工程界尚未很好解决的固井技术难题,提出了新的防窜作用机制,并研制开发出了F17C油井水泥双膨胀降滤失剂,对其在不同条件下的膨胀量、滤失量、胶结强度和工程性能进行了评价。结果表明:F17C不仅可使油井水泥浆产生足够的塑性膨胀和后期膨胀,而且还能有效地控制水泥浆的失水量。掺入该材料后,水泥浆的其它工程性能也满足API规范和现场施工的技术要求。100多口井的固井实践证明:F17C可大幅度提高调整井的固井优质率,是一种值得推广的新型油井水泥多功能防窜剂。
One of the major problems for cementing operation at abroad and domestic is fluid migration in cementing and poor bonding quality in sheath/formation and sheath/casing. A novel antichanneling mechanism was proposed and a controllable fluidloss expansive material for oilwell cement was studied. A multifunction expansive material named F17C was prepared which can show not only significant expansion both in plastic and set conditions but also lower filtration. In addition, other engineering properties of the slurry, such as thickening time, compressive strength and rheology, also satisfied API specification. The additive was applied over 100 wells and showed excellent cementing quality. It was proved to be a successful material for improving the cementing quality in channeling easy wells.
出处
《南京工业大学学报（自然科学版）》
CAS
2002年第6期11-15,共5页
Journal of Nanjing Tech University(Natural Science Edition)
基金
中国石油化工股份有限公司项目(编号:P99056)
