产品展厅>>项目研发>>缝洞型储层气体示踪剂产出曲线特征测试

塔河缝洞型油藏在开发中后期阶段,提高采收率的措施类型与方案是建立在精细认识储层结构特征的基础上。描述储层结构有多种方法:地震评价、井间监测评价、生产动态或者注水压降等动态分析评价等等。目前塔河油田大量缝洞单元开展了注水、注气等示踪剂探测技术用以分析采收率。一共开展了190余井组的井间示踪剂监测,通过大量井间示踪剂产出资料,了解了井间连通性,但是未能深入挖掘示踪剂产出曲线表现出了可能储层特征。通过模块化三维物模设计与制作可以在三维空间内搭建所需要的模型结构。获得更接近的地下缝洞结构,依据注入示踪剂的特征曲线可以正确评估出实地缝洞型油藏的储量等。

分析缝洞性油藏实物岩心组成结构,包括强度、成份、孔隙率、表面结构等。

搭建三维模拟实物平台框架。

根据缝洞性油藏的地下缝洞结构特征(比例尺寸、缝洞分布等),使用岩心模型材料加工具有不同缝洞基本特征的立体模块。

将立体模块组装成不同特点的三维模型。

以现有的示踪剂,在模型结构中进行示踪剂的注入和采集,分析示踪剂的流动情况和分散情况,分析岩心与不同示踪剂之间的相互影响。

根据示踪剂结果和模型结构建立示踪剂与模型内在联系,并根据反馈对缝洞模型结构特征进行预测。

模拟示踪剂在注入后的流动情况,总结示踪剂特征曲线。同时归纳总结出一套示踪剂特征曲线对于缝洞性油藏地下结构分析方法。

示踪剂产出曲线表现储层特征,这方面技术尚未被研究。项目团队深刻了解示踪剂工作原理和特征曲线检测技术,通过模块化三维物模设计与制作可以在三维空间内搭建所需要的模型结构,获得更接近的地下缝洞结构,依据注入示踪剂的特征曲线可以正确评估出实地缝洞型油藏的储量等。该技术具有突破性,产品有很大的领先和技术优势。

Products>>Project Development>>Characteristic Test of Gas tracer production Curve in fracture-hole Reservoir

In the middle and late stages of development of Tahe fracture-hole reservoir, the methods to improve oil recovery are based on comprehensive understanding of the structural characteristics of the reservoir. There are many methods to describe reservoir structure: seismic evaluation, cross-well monitoring and evaluation, production performance or water injection pressure drop and so on. At present, a large number of fracture and hole units in Tahe Oilfield have carried out tracer detection techniques such as water injection and gas injection to analyze oil recovery. A total of 190 well groups of inter-well tracer monitoring have been carried out. Through a large number of cross-well tracer production data, cross-well connectivity has been understood, but the failure to dig the tracer production curve deeply shows the possible reservoir characteristics. Through modular 3D model design and fabrication, the required model structure can be built in three dimensional space. According to the characteristic curve of injecting tracer, the reserves of field fracture-hole reservoir can be correctly evaluated, and the more approach underground fracture-hole structure can be obtained.

The core composition structure of fracture-cavity reservoir is analyzed, including strength, composition, porosity, surface structure and so on.

Build a three-dimensional simulation physical platform framework.

According to the structural characteristics of underground fractures and holes in fracture-hole reservoirs (proportional size, fracture-hole distribution, etc.), core models are used to process three-dimensional modules with different characteristics of fractures and holes.

The three-dimensional module is assembled into three-dimensional models with different characteristics.

With the existing tracer, the injection and collection of tracer are carried out in the model structure, the flow and dispersion of tracer, the interaction between core and different tracers are analyzed.

According to the results of tracer and the structure of the model, the internal relationship between the tracer and the model is established, and the structural characteristics of the model are predicted according to the feedback.

The flow of tracer after injection is simulated and the characteristic curves of tracer are summarized. At the same time, a set of tracer characteristic curves for underground structure analysis of fracture-hole reservoirs is summarized.

Tracer production curves show reservoir characteristics, which have not been studied in the field. The project team deeply understands the working principle and characteristic curve detection technology of tracer. Through modular 3D physical mod design and fabrication, the model structure needed can be built in the 3D space to obtain a closer underground fracture-hole structure. According to the characteristic curve of the tracer injection, the reserve of the field fracture-hole type oil reservoir can be evaluated correctly. The product has breakthrough technologies so the advantages are outstanding.