摘要
垦利16-1油田位于渤海南部海域,地质条件复杂,属于典型的"边、小、碎、深"油田.由于井斜较大、套管居中度差、地层承压能力差,固井过程中存在套管下不到位、漏失风险高、顶替效率低等诸多难题,严重制约着该区开发方案实施的进程.针对垦利16-1油田浅层大位移井固井难题,通过下套管技术改进、水泥浆体系优化,结合现场固井技术优化研究,提出了一套系统、成熟的浅层大位移井固井技术.该技术在现场实践中取得了显著效果,保障了该区块大位移井的固井质量,对于渤海湾海域类似情况大位移井固井具有重要的指导意义.
Abstract
Kenli 16-1 Oilfield is located in the southern part of Bohai Sea, with complicated geolog-ical condition, it belongs to the typical"edge, small, broken and deep"oilfield. Due to the large well deviation, poor casing centering, and poor formation pressure bearing capacity, there are many problems in the cementing process, such as insufficient casing, high leakage risk, and low replace-ment efficiency. These problems seriously restrict the implementation of development plan in this ar-ea . In order to solve the above cementing problems, this paper proposes a systematic and mature ce-menting technology for shallow extended reach wells by improving casing technology, optimizing ce-ment slurry system, and combining on-site cementing technology optimization research. The technol-ogy has achieved remarkable results in field practice, solving the difficulty in running the casing pipe, low replacement efficiency, and high risk of leakage. This research has important guiding sig-nificance for extended reach wells in similar situations.
维普
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