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产品展厅>>研发&服务>>缝洞型油藏试井深入应用评价研究

该技术从2017年持续攻关至今,打破常规砂岩油藏渗流理论,通过伯努利方程的引入实现了溶洞流体特征的描述,建立井-洞-缝、井-洞-缝-洞、井-缝-洞-缝-洞、井-缝-洞-缝-洞等四种平面、纵向的地质模型,实现溶洞数量、大小、距离、裂缝长度、缝洞组合结构等储层描述的特色参数解释,形成相对完善的适用于缝洞油藏类型试井解释理论体系。

前期研究主要集中于缝洞试井解释理论攻关,对于应用解释软件尚未规范化;同时关于新理论中参数的物理意义侧重缝洞试井新参数,对于其他参数是否具有新物理意义目前尚未攻关;另外前期应用表明裂缝体积计算结果普遍偏大,仅对流体高压物性类似静态参数相对敏感,因此继续开展本项目。

缝洞型油藏试井解释及模型完善

对缝洞型油藏地层进行整理完善,明确不同解释图板下全部参数意义

缝洞试井解释应用推广

缝洞试井解释应用技术手册编制

缝洞试井解释软件更新完善

裂缝体积解释理论探究

缝洞型地层压力分布计算

平均压力降幅计算方法研究

本项目中涉及到缝洞型油藏试井解释理论完善、解释应用推广及裂缝体积结果完善。通过现场100余井次的推广应用,其中塔河油田老井复查50井次,顺北油田50余井次左右,目前资料解释符合率70%以上。后续继续将理论与实际结合,对相关裂缝体积及动态储量计算方法进行深化研究,降低动态储量解释误差,进一步提高吻合率。  

Products>>Project Development>>Study on in-depth application evaluation of well test in fracture-cave reservoir

Since 2017, the technology has broken through the conventional seepage theory of sandstone reservoir, realized the description of cave fluid characteristics through the introduction  of Bernoulli equation, and established four plane and vertical geological models: well-cave-fracture, well- cave-fracture-cave, well-fracture- cave-fracture- cave,  well-fracture-cave-fracture-cave. Realize the characteristic parameter interpretation of reservoir description such as the number, size, distance, fracture length and fracture cavity combination structure, and form a relatively perfect theoretical system suitable for well test interpretation of fracture cave reservoir types.

The previous research mainly focused on the theoretical research of fracture cavity well test interpretation, and the application interpretation software has not been standardized; At the same time, the physical meaning of parameters in the new theory focuses on the new parameters of fracture hole well test, and whether other parameters have new physical meaning has not been solved at present; In addition, the previous application shows that the calculation results of fracture volume are generally too large, which is only relatively sensitive to static parameters similar to fluid high-pressure physical properties. Therefore, the project continues to be carried out.

Well test interpretation and model improvement of fracture-cave reservoir.

Sort out and improve the strata of fracture-cave reservoir, and clarify the significance of all parameters under different interpretation charts.

Application and popularization of fracture-cave well test interpretation.

Preparation of technical manual for fracture-cave well test interpretation and Application.

Updating and improving the fracture-cave well test interpretation software.

Research on fracture volume interpretation theory.

Calculation of pressure distribution in fracture-cave formation. 

Study on calculation method of average pressure drop.

This project involves the improvement of well test interpretation theory, interpretation application and fracture volume results of fracture-cave reservoir. Through the promotion and application of more than 100 well times on site, including 50 well times of old well review in Tahe Oilfield and about 50 well times in Shunbei oilfield. At present, the coincidence rate of data interpretation is more than 70%. In the follow-up, continue to combine theory with practice, deepen the research on relevant fracture volume and dynamic reserve calculation methods, reduce the interpretation error of dynamic reserves and further improve the coincidence rate.