小套管井无油管采油技术的研究与应用

Research and application of tubeless oil production technology for small cased wells

董元军 郑振兴 孟凡晶 古光明 孙渊平

DONG Yuanjun ZHENG Zhenxing MENG Fanjing GU Guangming SUN Yuanping

中国石化胜利油田分公司临盘采油厂，山东临邑　251500 中国石化胜利油田分公司采油工艺研究院，山东东营　257000

Linpan Oil Production Plant, Shengli Oilfield Company, SINOPEC, Linyi 251500,China Research Institute of Oil Production Technology, Shengli Oilfield Company, SINOPEC, Dongying 257000,China

近年来，内径小于?101.6 mm 的小套管井在临盘采油厂渐成规模，已成为原油生产的重要组成部分。但由于套管内径限制，该类油井泵径小、杆管间隙小，导致提液困难和杆管偏磨。本研究提出了小套管井无油管举升的技术理念，配套完成了小套管井无油管杆式泵锚定技术、空心杆注塑防偏磨技术、无油管采油井口出油系统及举升工具的设计与室内试验，形成了一套完整的小套管井无油管举升实用技术。现场试验表明，该技术满足了小套管井现场提液、防偏磨的需要，有效降低了生产成本，是一种技术可靠、使用简单、成本低廉的技术手段，对油田小套管井的高效开发具有重要意义。

In recent years, the small cased wells with inner diameter less than ?101.6 mm have become more popular in Linpan Oil Production Plant and have become an important part of crude oil production. But due to restriction by inner diameter of casing, the pump diameter is small and the clearance between pipe and the rod is small, which cause difficulties in liquid extraction and eccentric wear of rod-pipe. A technical concept of tubeless lift in small cased wells is presented, with completion of tubeless rod pump anchoring technology, anti-eccentric technique for hollow rod by injection molding, tubeless wellhead oil production system with lifting tools. Thus, a set of complete practical tubing-free lift technique for small cased wells is formed. The site tests show that this technique satisfies the requirements of liquid extraction and anti-eccentric wear in small cased wells, effectively reduces the production costs and is a technically reliable. It is easy to use and its cost is low, which has great significance to the efficient development of small cased wells.

10.13639/j.odpt.2015.02.029