厚层稠油油藏火驱受效状况识别与调控技术

Identification and Control Technologies for Thick Heavy Oil Reservoirs by In-Situ Combustion Drive Process

辽河油田高3618块为典型的厚层砂砾岩稠油油藏。该油藏在蒸汽吞吐开发末期开发效果差、井间大量剩余油无法动用,为此,于2008年5月开展火驱先导性试验,并逐步扩大规模到13个井组。经对火驱开发的深入研究与实践,初步形成了"点火、连通状况评价、燃烧状况评价、燃烧前缘评价、火驱见效特征评价"等5项关键配套技术,通过现场应用使高3618块火驱开发效果逐步转好,基本达到了"点火成功、普遍受效、高温燃烧、均匀推进"的预期。

Gao-3618 block in Liaohe oilfield is a typical thick glutenite heavy oil reservoir. It has been carried out combustion drive pilot test and extended to 13 well groups in view of a large number of remaining oil between wells on the last phase of the steam stimulation de- velopment in May 2008. By the field studies and practices such five key supporting technologies were preliminarily formed as ignition, communication status evaluation, combustion condition evaluation, combustion front driving evaluation and response feature evaluation. Through the application to Gao-3618 block, its combustion drive effectiveness has been gradually improved, basically reaching the expecta- tions of ＂ignition success, general effect, high temoerature combustion and uniform drivinz＂.