全谱饱和度测井仪配接爬行器在水平井中的应用

Application of PSSL Matching with MDT in Horizontal Wells

海外P油田处于开发的中后期,油层水淹严重,剩余油分布认识不清。全谱饱和度测井(PSSL)技术在识别水淹层﹑发现潜力层﹑确定剩余油分布方面具有较好效果。受限于仪器自身结构和施工工艺,PSSL无法进行水平井施工。介绍了PSSL和Sondex水平井爬行器MDT的原理及组成,通过设计转换接头和外套式滚珠扶正器,并采取相关技术措施,实现了两种仪器的配接,优化了组合仪器串的结构。水平井测井实例证明该项技术在该油田水平井中取得了良好的应用效果。

The P oilfield overseas is in the middle-late stage of development,thus the oil layers are seriously flooded and the remaining oil distribution is unclear.The full-spectrum saturation logging(PSSL)has achieved good results in identifying water-flooded layers,discovering potential layers and determining remaining oil distribution.Howerver,restricted by the structure and operational technique of the tool itself,PSSL cannot be conducted in horizontal wells.This paper briefly introduces the principle and structure of PSSL and Sondex horizontal well tractor MDT.By designing and using an adapter and a jacket-type ball centralizer and taking related technical measures,the matching of the two instruments is realized and optimized.A case that applied the combined tool string in horizontal wells proves that the technology has achieved good application effect in horizontal wells of this oilfield.