套管短回接固井工艺在塔河油田套损井治理中的应用

Application of short liner cementing technique in casing damaged well governing of the Tahe oil field

田磊 李桂云 刘燕平

Tian Lei Li Guiyun Liu Yanping

中国石化 西北油田分公司 采油三厂, 新疆 轮台 841600

No. 3 Oil Production Plant, SINOPEC Northwest Company, Luntai, Xinjiang 841600, China

随着塔河油田油井长期注水、注气三采开发，油井套损现象日趋严重，特别是一些老井，由于受套管使用年限较长，固井质量较差，套管抗挤强度低等因素影响，套管薄弱段、套管悬挂器部位易造成破损，地层水侵入井筒导致油井高含水。前期套损井治理的主要工艺是卡封堵漏和挤水泥，这两种工艺的缺点是适用性有限，有限期短。目前塔河油田针对性地应用套管短回接固井工艺，一次性、永久性解决了油井套损问题。通过上述3类套损治理工艺的分析，重点突出套管短回接固井的优点，为后期该工艺的推广提供了重要依据。

With the long-term development of water, nitrogen injection in the Tahe oil field, well casing damage becomes more and more serious, especially in some old wells, due to the long working time of casing pipe, poor cementing quality, and low casing pipe strength. Pipes often broke at casing suspension or weak parts. As a result, formation water invaded, leading to high water cut in oil wells. The main technologies for casing damage governing are seal plugging and cementing; however, they have a limited applicability and short finite time. At present, a short liner cementing technique is used in the Tahe oil field, and can solve the problem of oil well casing damage at once and forever. In this paper, through the analysis of the three types of casing damage governing methods, focusing on the advantages of the short liner cementing technique, it provides an important basis for the promotion of the technique.

https://doi.org/10.11781/sysydz2016S1133