公开(公告)号：US09416647B2

公开(公告)日：2016-08-16

申请号：US13754549

申请日：2013-01-30

Applicant: Schlumberger Technology Corporation

Inventor： Youxiang Zuo ,  Oliver C. Mullins ,  Chengli Dong ,  Dingan Zhang ,  ChengGang Xian

IPC: E21B49/08 ,  E21B47/00 ,  G06F19/00 ,  G06F17/00 ,  E21B49/10 ,  E21B49/00

CPC classification number: E21B47/00 ,  E21B49/00 ,  E21B49/10 ,  G06F17/00 ,  G06F19/704

Abstract: A methodology performs downhole fluid analysis at multiple measurement stations within a wellbore traversing a reservoir to determine gradients of compositional components and other fluid properties. A model is used to predict concentrations of a plurality of high molecular weight solute part class-types at varying reservoir locations. Such predictions are compared against downhole measurements to identify the best matching solute part class-type. If the best-matching class type corresponds to at least one predetermined asphaltene component, phase stability of asphaltene in the reservoir fluid at a given depth is evaluated using equilibrium criteria involving an oil rich phase and an asphaltene rich phase of respective components of the reservoir fluid at the given depth. The result of the evaluation of asphaltene rich phase stability is used for reservoir analysis. The computational analysis that evaluates asphaltene rich phase stability can also be used in other reservoir understanding workflows and in reservoir simulation.

Abstract translation: 一种方法在穿过储层的井眼内的多个测量站进行井下流体分析，以确定组成成分和其它流体性质的梯度。 模型用于预测在不同储层位置的多种高分子量溶质部分类型的浓度。 将这些预测与井下测量进行比较，以确定最佳匹配溶质部分类型。 如果最佳匹配类型对应于至少一种预定的沥青质组分，则使用平衡标准评价沥青质在给定深度的储层流体中的相稳定性，所述平衡标准包括储层流体各组分的富油相和富含沥青烯相 在给定的深度。 沥青质相稳定性评价结果用于油藏分析。 评估沥青质丰富相稳定性的计算分析也可用于其他油藏理解工作流程和油藏模拟。

公开(公告)号：US20130197808A1

公开(公告)日：2013-08-01

申请号：US13754549

申请日：2013-01-30

Applicant: Schlumberger Technology Corporation

Inventor： Youxiang Zuo ,  Oliver C. Mullins ,  Chengli Dong ,  Dingan Zhang ,  ChengGang Xian

IPC: E21B47/00 ,  G06F17/00

CPC classification number: E21B47/00 ,  E21B49/00 ,  E21B49/10 ,  G06F17/00 ,  G06F19/704

Abstract: A methodology performs downhole fluid analysis at multiple measurement stations within a wellbore traversing a reservoir to determine gradients of compositional components and other fluid properties. A model is used to predict concentrations of a plurality of high molecular weight solute part class-types at varying reservoir locations. Such predictions are compared against downhole measurements to identify the best matching solute part class-type. If the best-matching class type corresponds to at least one predetermined asphaltene component, phase stability of asphaltene in the reservoir fluid at a given depth is evaluated using equilibrium criteria involving an oil rich phase and an asphaltene rich phase of respective components of the reservoir fluid at the given depth. The result of the evaluation of asphaltene rich phase stability is used for reservoir analysis. The computational analysis that evaluates asphaltene rich phase stability can also be used in other reservoir understanding workflows and in reservoir simulation.

Abstract translation: 一种方法在穿过储层的井眼内的多个测量站进行井下流体分析，以确定组成成分和其它流体性质的梯度。 模型用于预测在不同储层位置的多种高分子量溶质部分类型的浓度。 将这些预测与井下测量进行比较，以确定最佳匹配溶质部分类型。 如果最佳匹配类型对应于至少一种预定的沥青质组分，则使用平衡标准评价沥青质在给定深度的储层流体中的相稳定性，所述平衡标准包括储层流体各组分的富油相和富含沥青烯相 在给定的深度。 沥青质相稳定性评价结果用于油藏分析。 评估沥青质丰富相稳定性的计算分析也可用于其他油藏理解工作流程和油藏模拟。