石油钻采工艺2017，Vol.39Issue(4)：495-498,4.DOI:10.13639/j.odpt.2017.04.018
多元热流体吞吐初期井间窜流复合防治
Combined interwell channeling control in the early stage of huff and puff of multiple thermal fluid
摘要
Abstract
Good development effects have been achieved since huff and puff thermal production of multiple thermal fluid was technically demonstrated on site in Bohai Oilfield. Due to the physical properties of oil reservoir and thermal fluids and the well pattern modes, however, interwell channeling is more serious during heat injection. As a result, the single-well oil production in the huff and puff cycle drops by 30％ and thermal production effect gets worse. To relieve the gas channeling, its cause was firstly analyzed. Then based on the numerical simulation method, combined with the chemical profile control and plugging technology, it was proposed to take the combined control measures of "pattern heat injection +high-temperature profile control and plugging +emulsion prevention synergism"in the early stage of huff and puff. That is to inject multiple thermal fluids through multiple wells simultaneously, and select tempera-ture-sensitive reversible gel to plug the large pore passages temporarily and high-temperature emulsion prevention synergist to improve the thermal recovery factor. Field test results show that during the construction of thermal production, the neighboring wells are all in normal condition without obvious gas channeling. The daily oil increment of heat injection well is 1.5 times higher than that before the measures are taken. On the whole, the application effect is good. It provides the effective technical support for the channeling control between offshore thermal production wells and quality and efficiency improvement in the future.关键词
稠油/多元热流体/井间窜流/面积注热/高温调堵/海上油田Key words
heavy oil/multiple thermal fluid/interwell channeling/pattern heat injection/high temperature profile control and plugging/offshore oilfield分类
能源科技引用本文复制引用
张华,刘昊,刘义刚,王秋霞,周法元,张伟..多元热流体吞吐初期井间窜流复合防治[J].石油钻采工艺,2017,39(4):495-498,4.基金项目
国家科技重大专项"渤海油田高效采油工程及配套技术示范"(编号:2016ZX05058-003). （编号:2016ZX05058-003）
