|本期目录/Table of Contents|

[1]李承龙,赵国忠.基于压敏效应的变启动压力梯度面积井网产量计算模型[J].断块油气田,2020,27(03):327-334.[doi:10.6056/dkyqt202003012]
 LI Chenglong,ZHAO Guozhong.Production calculation model of areal well pattern with variable start-up pressure gradient based on pressure sensitive effect[J].Fault-Block Oil and Gas Field,2020,27(03):327-334.[doi:10.6056/dkyqt202003012]
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基于压敏效应的变启动压力梯度面积井网产量计算模型(PDF)
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《断块油气田》[ISSN:1005-8907/CN:41-1219/TE]

卷:
27
期数:
2020年03
页码:
327-334
栏目:
开发工程
出版日期:
2020-05-25

文章信息/Info

Title:
Production calculation model of areal well pattern with variable start-up pressure gradient based on pressure sensitive effect
文章编号:
12
作者:
李承龙12赵国忠12
1.中国石油大庆油田有限责任公司勘探开发研究院,黑龙江 大庆 163712;2.黑龙江省油层物理与渗流力学重点实验室,黑龙江 大庆 163712
Author(s):
LI Chenglong12 ZHAO Guozhong12
1.Exploration and Development Research institute, Daqing Oilfield Company Ltd., PetroChina, Daqing, 163712, China; 2.Heilongjiang Key Laboratory of Reservoir Physics and Fluid Mechanics in Porous Medium, Daqing 163712, China
关键词:
特低渗透油藏压敏效应变启动压力梯度面积井网产量计算模型
Keywords:
ultra-low permeability reservoir pressure sensitive effect variable start-up pressure gradient areal well pattern production calculation model
分类号:
TE348
DOI:
10.6056/dkyqt202003012
文献标志码:
A
摘要:
特低渗透油藏流体呈非线性流动,受压敏效应影响显著,渗透率随地层压力的变化而变化,从而导致启动压力梯度变化,严重制约油田生产。目前已有的特低渗透油藏面积井网产量计算模型未同时考虑压敏效应和变启动压力梯度问题,导致计算结果与实际情况偏差较大,适用性较差。针对这一问题,文中基于特低渗透油藏渗流理论及压敏效应公式,分析了压敏效应对渗透率和启动压力梯度的影响,建立了变启动压力梯度模型,推导了考虑压敏效应和变启动压力梯度的五点法、四点法和反九点法井网产量计算模型以及启动系数计算模型。实例结果表明,模型计算结果更接近实际情况,可用于评价不同井网条件下储层动用状况,为特低渗透油藏开发调整方案编制提供理论依据。
Abstract:
The fluid flow of the ultra-low permeability reservoir is non-linear and affected by the pressure sensitive effect significantly. The permeability varies with formation pressure, which leads to changes of start-up pressure gradient and seriously restricts the oilfield production. The existing production calculation model of areal well pattern of ultra-low permeability reservoir does not consider the pressure sensitive effect and the variable start-up pressure gradient at the same time, which results in a large deviation between the calculation result and the actual situation, and the applicability is poor. To solve this problem, based on the seepage theory and the pressure sensitive effect formula, this paper analyzes the impact of pressure sensitive effect on permeability and start-up pressure gradient, establishes the variable start-up pressure gradient model. Considering the pressure-sensitive effect and the variable starting pressure gradient, the production calculation model and start-up coefficient calculation model of five-spot, four-spot and inverted nine-spot well pattern was derived. The results of the example show that the model calculation results are closer to the actual situation and can be used to evaluate the reservoir producing status under different well patterns, which provides theoretical guarantee for designing development adjustment scheme of ultra-low permeability reservoir.

参考文献/References:

相似文献/References:

[1]孙晓旭,杨胜来,李武广.考虑启动压力梯度和压敏效应的超深层气藏产能方程的建立[J].断块油气田,2011,18(03):360.
[2]陈民锋1,姜汉桥,郑伟,等.低渗透压敏油藏极限注采井距研究[J].断块油气田,2010,17(05):579.

备注/Memo

备注/Memo:
收稿日期:2019-11-01;改回日期:2020-03-09。
第一作者:李承龙,男,1986年生,工程师,博士,主要从事油气田开发、提高采收率等方面的研究。E-mail:lcl716@126.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);国家科技重大专项课题“低渗、特低渗复杂油藏规模有效动用关键技术“(2017ZX05013-006)
更新日期/Last Update: 2020-05-21