THY修井暂堵剂的研究与应用

THY修井暂堵剂是以油溶性树脂作为桥堵剂,桥堵储层孔道,在井壁形成屏敝层.从而减少修井液的漏失。桥堵剂是油溶性的、投产后与原油相遇其桥堵作用自行解除,储层渗透性得以恢复。该修井暂堵剂经辽河油田96口井、112井次现场应用表明,可有效地控制渗透性好的低压储层漏失.起到保护储层和辅助增产措施顺利实施的良好作用。

STUDY AND APPLICATION OF THY TEMPORARY PLUGGING AGENT FOR WELLWORKOVER

THY temporary plugging agent is used to bridge off reservoir pore, produce borehole wall shielding zone, and then reduce leakage of workover fluid by taking oil-soluble resin as bridging - off agent. Because of oil-solubility of bridging-off agent, the shielding zone is removed when bridging-off agent mingles with crude oil, and then the formation permeability is restored. Field application results of 112 times in 96 wells in Liaohe oilfield indicate that this agent can control effectively leakage of workover fluid into high permeability and low pressure reservoir and is helpful to well stimulation.