非均匀块体分布裂缝性储层流动建模的MINC接近函数

IF 1.8 4区 工程技术 Q4 ENERGY & FUELS
N. Farah, Ali Ghadboun
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引用次数: 1

摘要

储层模拟是预测油气产量的有力手段。在确定了天然裂缝的几何形状之后,应该建立一个精确的模拟模型和一个考虑不同流态的物理储层模型。文献中提出的许多基于双连续介质方法的模型依赖于伪稳态(PSS)假设来模拟孔隙间流动。由于此类储层渗透率低,过渡期可达数年。因此,PSS假设变得不合理。多重相互作用连续体(MINC)方法所采用的数值解能够模拟双连续体方法忽略的瞬态效应。然而,随着裂缝网络复杂性的增加,其精度下降。为了解决后一个问题,引入了MINC方法的一种特殊处理,即MINC接近函数(MINC - pf)。然而,由于所研究的细胞中存在几个网格块,因此MINC-PF受到限制。本文讨论了这一限制,并提出了两种可能的解决方案(透射率重新计算/考虑附近裂缝调整邻近函数)。与参考解决方案相比,这两种方法都证明了它们的适用性和有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The MINC proximity function for fractured reservoirs flow modeling with non-uniform block distribution
Reservoir simulation is a powerful technique to predict the amount of produced hydrocarbon. After a solid representation of the natural fracture geometry, an accurate simulation model and a physical reservoir model that account for different flow regimes should be developed. Many models based on dual-continuum approaches presented in the literature rely on the Pseudo-Steady-State (PSS) assumption to model the inter-porosity flow. Due to the low permeability in such reservoirs, the transient period could reach several years. Thus, the PSS assumption becomes unjustified. The numerical solution adopted by the Multiple INteracting Continua (MINC) method was able to simulate the transient effects previously overlooked by dual-continuum approaches. However, its accuracy drops with increasing fracture network complexity. A special treatment of the MINC method, i.e., the MINC Proximity Function (MINC–PF) was introduced to address the latter problem. And yet, the MINC–PF suffers a limitation that arises from the existence of several grid-blocks within a studied cell. In this work, this limitation is discussed and two possible solutions (transmissibility recalculation/adjusting the Proximity Function by accounting for nearby fractures) are put forward. Both proposed methods have demonstrated their applicability and effectiveness once compared to a reference solution.
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来源期刊
CiteScore
2.70
自引率
0.00%
发文量
0
审稿时长
2.7 months
期刊介绍: OGST - Revue d''IFP Energies nouvelles is a journal concerning all disciplines and fields relevant to exploration, production, refining, petrochemicals, and the use and economics of petroleum, natural gas, and other sources of energy, in particular alternative energies with in view of the energy transition. OGST - Revue d''IFP Energies nouvelles has an Editorial Committee made up of 15 leading European personalities from universities and from industry, and is indexed in the major international bibliographical databases. The journal publishes review articles, in English or in French, and topical issues, giving an overview of the contributions of complementary disciplines in tackling contemporary problems. Each article includes a detailed abstract in English. However, a French translation of the summaries can be provided to readers on request. Summaries of all papers published in the revue from 1974 can be consulted on this site. Over 1 000 papers that have been published since 1997 are freely available in full text form (as pdf files). Currently, over 10 000 downloads are recorded per month. Researchers in the above fields are invited to submit an article. Rigorous selection of the articles is ensured by a review process that involves IFPEN and external experts as well as the members of the editorial committee. It is preferable to submit the articles in English, either as independent papers or in association with one of the upcoming topical issues.
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