雅达油田高含硫小井眼尾管固井技术

Liner cementing technology for slim hole well with high sulfur content in Yadavaran Oilfield

魏浩光 桑来玉 杨红歧 尹大伟 徐军浩

WEI Haoguang SANG Laiyu YANG Hongqi YIN Dawei XU Junhao

中国石化石油工程技术研究院，100101　北京 胜利油田黄河固井公司，山东东营　257064

SINOPEC Research Institute of Petroleum Engineering, Beijing 100101, China Huanghe Cementing Company of Shengli Oilfield Company, Dongying 257064, China

针对伊朗雅达油田Fahliyan油层尾管固井技术难点，优选出防腐防窜胶乳水泥浆体系。室内测试分析表明：该体系防窜能力强，模拟实验过程中气窜量为0；在室内模拟的H2S强腐蚀条件下，仍能保持致密的微观结构，水泥石强度下降幅度为11.46%，水泥石渗透率增加程度为18.82%；同常规水泥浆体系相比，养护24 h的单位面积抗冲击功可提高74%，养护48 h的单位面积抗冲击功可提高79%。为提高洗井质量和水泥浆顶替效率，率先将旋转尾管固井技术应用于?114.3 mm尾管固井中。同时，采用先导浆工艺和提高套管居中度技术，达到提高顶替效率的目的。上述措施的实施，为解决伊朗雅达油田高含硫小井眼尾管固井难题做出有益的尝试，取得了较好的现场应用效果。

In view of the difficulties in liner cementing technology for Fahliyan Reservoir of Yadavaran Oilfield of Iran, the anti-corrosion, anti-channeling latex cement slurry system was selected. Indoor test and analysis showed that this system was capable of preventing channeling, and the gas channeling amount was 0 in simulation test; under strong H2S corrosion conditions in lab simulation, it could still maintain tight micro-structure; the strength of set cement decreased by 11.46%, and the permeability of set cement increased by 18.82%. Compared with common cement systems, the resistance to impact energy in unit area can be increased by 74% after curing for 24 hrs and 79% for 48 hrs. In order to improve flushing quality and cement displacement efficiency, rotary liner cementing technology was firstly applied to ?114.3 mm liner cementing. Preflush technology and casing centralizing technique were aslo adopted to improve displacement efficiency. The implementation of above measures is a helpful attempt in addressing the difficulties in liner cementing in slim hole well with high sulfur content in Yadavaran Oilfield of Iran , and achieved favorable field application effect.

10.13639/j.odpt.2014.04.012