福山油田绳结暂堵转向压裂工艺
Rope-knotting temporary plugging and diverting fracturing technique in Fushan oilfield
张智勇 1邓校国 2付杰 2杜建洪 2李凯 1张大年1
作者信息
- 1. 北京斯迪莱铂油气技术有限公司 北京 102600
- 2. 中国石油南方石油勘探开发有限责任公司 海南海口 570216
- 折叠
摘要
海南福山油田储层主要特点薄互层发育,油层厚度小,隔层泥质含量高,使用可溶球和颗粒暂堵剂实现层间暂堵转向,存在暂堵压力响应不明显,颗粒暂堵剂堵塞压裂泵车柱塞阀的问题.通过对暂堵材料、暂堵工艺的改进,使用新型绳结暂堵球,取代了以往的可溶球和颗粒暂堵剂;同时在室内开展了薄互层射孔优化、携砂液对孔眼冲蚀规律分析、绳结暂堵球直径大小和数量与射孔孔眼的匹配研究,形成了适应福山油田储层特征的绳结暂堵转向压裂工艺.经福山油田应用 17 口井 27 层,暂堵转向有效率 82%,单井平均日增油 4.28 t/d,取得较好增产效果.该工艺进一步提高了薄互层压裂改造效率,具有良好的推广应用价值.
Abstract
The main characteristics of the reservoirs in Hainan Fushan Oilfield include the development of thin interlayers,small oil layer thickness,and high mud content in the interlayers.Temporary plugging and diverting between layers can be achieved by using soluble balls and granular temporary plugging agents.However,issues such as unclear response to plugging pressure and blockage of fracturing pump truck plunger valves by granular temporary plugging agents were encountered.Through improvements in plugging materials and techniques,a new type of rope-knotting temporary plugging ball was selected to replace the traditional soluble balls and granular temporary plugging agents.Additionally,indoor research,such as optimization of perforation in thin interlayers,analysis of erosion patterns of perforations by sand-carrying fluids,the matching of rope-knotting temporary plugging ball diameter and quantity with perforation holes,were performed,forming a rope-knotting temporary plugging and diverting fracturing technique adapted to the reservoir characteristics of the Fushan Oilfield.The technique was applied to 27 layers in 17 wells in Fushan Oilfield,achieving an effective diverting rate of 82% and an average daily oil production increase of 4.28 t/d per well,demonstrating significant production enhancement.This technique further improves the efficiency of fracturing in thin interlayers and holds considerable significance for widespread application.
关键词
福山油田/薄互层/压裂/暂堵转向/暂堵剂/绳结暂堵球/封堵性能/优化设计Key words
Fushan oilfield/thin interlayers/fracturing/temporary plugging and diverting/temporary plugging agent/rope-knotting temporary plugging ball/sealing performance/optimization design引用本文复制引用
出版年
2024
NETL
NSTL
万方数据