柴达木盆地涩北多层气藏合采物理模拟

doi:10.7623/syxb2013S1016

石油学报 ›› 2013, Vol. 34 ›› Issue (增刊一): 136-142.DOI: 10.7623/syxb2013S1016

• 油田开发 • 上一篇

柴达木盆地涩北多层气藏合采物理模拟

朱华银^1,2, 胡勇^1,3, 李江涛⁴, 钟世敏², 张利文⁵, 和雅琴⁵

1. 中国石油天然气集团公司天然气成藏与开发重点实验室河北廊坊 065007;
2. 中国石油勘探开发研究院廊坊分院河北廊坊 065007;
3. 东北石油大学石油工程学院黑龙江大庆 163318;
4. 中国石油青海油田公司甘肃敦煌 736202;
5. 中国石油华北油田公司河北任丘 062552

收稿日期:2013-03-14 修回日期:2013-06-16 出版日期:2013-09-25 发布日期:2013-09-15
通讯作者: 朱华银
作者简介:朱华银,男,1967年5月生,1990年毕业于西南石油学院采油工程专业,2007年获西南石油大学博士学位,现为中国石油勘探开发研究院廊坊分院高级工程师,主要从事油气层物理、天然气开发机理与实验研究。Email:zhy69@petrochina.com.cn
基金资助:
国家重大科技专项(2011ZX05007,2011ZX05015-004)资助

Physical simulation of commingled production for multilayer gas reservoir in Sebei gas field, Qaidam Basin

ZHU Huayin^1,2, HU Yong^1,3, LI Jiangtao⁴, ZHONG Shimin², ZHANG Liwen⁵, HE Yaqin⁵

1. CNPC Key Laboratory of Gas Reservoir Formation and Development, Langfang 065007, China;
2. Langfang Branch, PetroChina Research Institute of Exploration and Development, Langfang 065007, China;
3. College of Petroleum Engineering, Northeast Petroleum University, Daqing 163318, China;
4. PetroChina Qinghai Oilfield Company, Dunhuang 736202, China;
5. PetroChina Huabei Oilfield Company, Renqiu 062552, China

Received:2013-03-14 Revised:2013-06-16 Online:2013-09-25 Published:2013-09-15

摘要/Abstract

摘要：

为了研究气田存在的多层合采问题,更有效地分析各气层的产能特征和动态储量,通过将多个不同物性的岩心组"并联"组合,形成了多层合采模型,模拟分析了多层气藏合采时储层物性差异、压力差异、气井配产等现象对合采的影响,为研究多层合采的生产机理和动态提供了技术手段。实验研究表明层间物性差异越大,各小层在不同时期的产气贡献差异越大,并且这种差异随气井的配产增加而增大,其中相对高渗层早期产气贡献大,相对低渗层产气逐渐上升,其产气贡献主要体现在晚期;不同压力气层进行合采容易产生"高压层向低压层倒灌",对于因储层物性差异在生产中形成了层间压力差的多层合采气井,应避免关井而产生层间压力波动,从而造成储层破坏。

关键词: 涩北气田, 多层合采, 物理模拟, 产气特征, 层间干扰

Abstract:

This study is focused on commingled production from multilayer gas reservoir for effective analyses of the production feature and dynamic reserves of each gas layers. A commingled production model of multilayer reservoir is constructed through a parallel connection of core sets with different physical properties. The established model, which provides a means for researching the production mechanism and dynamics of multilayer commingled reservoir, is then used for assessing the effects of reservoir physical properties, pressure difference, and production proration on commingled production of multilayer gas reservoir. Experimental results show that the variations in the contribution of each sub-layer to total gas production increase with the interlayer differences of physical core properties as well as the production proration. Among different sub-layers, high-permeability layer makes greater contribution to gas production in an early stage, whereas low-permeability layer makes an increasing contribution to gas production over time with the major contribution in a late stage. Backflow from high- to low-pressure layer easily occurs in commingled production of multilayers with different pressures. Therefore, when interlayer pressure difference is formed in commingled production of multilayer gas reservoir due to the difference of physical reservoir properties, well shut-in should be avoided for preventing interlayer pressure fluctuations and related reservoir damage.

Key words: Sebei gas field, commingled producation, physical simulation, gas production feature, interlayer interference

中图分类号:

TE377

朱华银, 胡勇, 李江涛, 钟世敏, 张利文, 和雅琴. 柴达木盆地涩北多层气藏合采物理模拟[J]. 石油学报, 2013, 34(增刊一): 136-142.

ZHU Huayin, HU Yong, LI Jiangtao, ZHONG Shimin, ZHANG Liwen, HE Yaqin. Physical simulation of commingled production for multilayer gas reservoir in Sebei gas field, Qaidam Basin[J]. Editorial office of ACTA PETROLEI SINICA, 2013, 34(增刊一): 136-142.

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柴达木盆地涩北多层气藏合采物理模拟

Physical simulation of commingled production for multilayer gas reservoir in Sebei gas field, Qaidam Basin

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