[1]张 宇,何鑫迪,李承龙.考虑变启动压力梯度的技术极限井距计算方法研究[J].复杂油气藏,2020,13(03):62-66.[doi:10.16181/j.cnki.fzyqc.2020.03.013]
 ZHANG Yu,HE Xindi,LI Chenglong.Study on calculation method of technical limit well spacing considering variable starting pressure gradient[J].Complex Hydrocarbon Reservoirs,2020,13(03):62-66.[doi:10.16181/j.cnki.fzyqc.2020.03.013]
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考虑变启动压力梯度的技术极限井距计算方法研究()
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《复杂油气藏》[ISSN:1674-4667/CN:31-2019/TQ]

卷:
13卷
期数:
2020年03期
页码:
62-66
栏目:
油气开发
出版日期:
2020-09-25

文章信息/Info

Title:
Study on calculation method of technical limit well spacing considering variable starting pressure gradient
作者:
张 宇1何鑫迪2李承龙3
(1.大庆师范学院计算机科学与信息技术学院,黑龙江 大庆163712;2.中国石油大庆油田有限责任公司第六采油厂,黑龙江 大庆163000;3.中国石油大庆油田有限责任公司公司勘探开发研究院,黑龙江 大庆163712
Author(s):
ZHANG Yu1HE Xindi2LI Chenglong3
1.School of Computer Science and Information Technology,Daqing Normal University,Daqing 163712,China;2.Sixth Oil Production Plant,Daqing Oilfield Company Ltd., PetroChina,Daqing 163000,China;3.Exploration and Development Research Institute,Daqing Oilfield
关键词:
特低渗透油藏压敏效应变启动压力梯度技术极限井距
Keywords:
extra-low permeability reservoirpressure sensitive effectvariable starting pressure gradienttechnical limit well spacing
分类号:
TE349
DOI:
10.16181/j.cnki.fzyqc.2020.03.013
文献标志码:
A
摘要:
特低渗透油藏受压敏效应影响大,而传统技术极限井距计算方法未考虑压敏效应对注采井间驱替压力及启动压力梯度的影响,导致计算结果与矿场实际情况存在较大差距,区块难以建立有效驱替,降低了开发效果和效益。针对这一实际问题,研究通过建立考虑压敏效应油水井附近驱替压力公式及变启动压力梯度计算公式,基于传统技术极限井距计算公式,推导了考虑压敏效应的技术极限井距计算公式,并对模型进行参数分析。分析结果表明,渗透率越大、地层压力保持水平越高、注入压力越大、采油井井底流压越小、压敏效应影响越小,技术极限井距越小;与传统方法计算结果相比,采用所建模型计算技术极限井距需进一步缩小,平均缩小10 m以上。研究成果可为特低渗透油藏有效开发提供理论基础。
Abstract:
Ultra-low permeability reservoirs are greatly affected by the pressure-sensitive effect,and the traditional technical limit well spacing calculation method does not consider the influence of the pressure-sensitive effect on the displacement pressure and start-up pressure gradient between injection and production wells,resulting in a large gap between the calculation results and the actual situation of oilfields,and it is difficult to establish effective displacement in the block,which reduces the development effect and benefits.In response to this practical problem,this study established the displacement pressure formula and the variable starting pressure gradient calculation formula near the oil-water well considering the pressure-sensitive effect.Based on the traditional technical limit well spacing calculation formula,the technical limit well spacing considering the pressure-sensitive effect was derived,and the parameters of the model were analyzed.The analysis results show that the greater the permeability,the higher the formation pressure maintenance level,the greater the injection pressure,the lower the bottom hole pressure of the oil production well,and the smaller the pressure-sensitive effect is,the smaller the technical limit well spacing. Compared with the calculation results of traditional methods,the limit well spacing calculated by using the model built in this paper needs to be further reduced by more than 10 m. The research results can provide a theoretical basis for the effective development of ultra-low permeability reservoirs.

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备注/Memo

备注/Memo:
收稿日期:2020-04-26 ;改回日期:2020-05-30。第一作者简介:张宇(1988—),硕士,工程师,博士在读,主要从事石油工程数学方法方面的科研工作。E-mail:835722157@qq.com。基金项目:国家科技重大专项“外围油田改善开发效果及提高采收率技术研究与应用”(2016E-0209)。
更新日期/Last Update: 2020-09-30