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An Interpretation Model for the Production Profile on the Same Angle of a Horizontal Well Trajectory
Frontiers in Energy Research ( IF 2.6 ) Pub Date : 2020-07-31 , DOI: 10.3389/fenrg.2020.00203
Wenguang Song , Na Jia , Qiongqin Jiang

An accurate interpretation of the fluid production profile is the essential scientific step required for the dynamic monitoring and management of a reservoir. Currently, an accurate interpretation of conventional logging is generally available for vertical wells. However, high-accuracy interpretation is still a blank for horizontal wells, especially for those wells with low production. Therefore, it is of great importance to develop a new model that can efficiently improve the interpretation accuracy of horizontal wells' production profiles. Practically, it was observed from experiments that, for multiphase flow in a horizontal well, the flow pattern changes significantly with the varied inclination angle along the well trajectory. This is because the flow pattern is critically related to the flow rate and the measured phase flow data (i.e., the production data of oil, gas, and water), which varies with the inclination angle along the horizontal well trajectory. Based on the above observations, a new methodology is proposed to interpret horizontal wells' production profiles with the same inclination angle. A comparison of the measured data and numerically calculated results indicates that the newly established method can significantly improve the interpretation accuracy of horizontal wells' production fluid profile. The interpretation method is, therefore, enriched by production logging for different types of wells. By comparing the experimentally measured data and the calculated results, the newly established method is indicated to be capable of significantly improving the interpretation accuracy of horizontal wells' fluid production profile. The interpretation method is further extended to production logging for different well types. By applying this new methodology, the main water-producing layer can be precisely identified to prevent and control the water burst from horizontal wells as well as the formation of water plugging. Consequently, oil and gas recovery can be effectively enhanced.



中文翻译:

水平井轨迹相同角度下的生产剖面解释模型

流体产量曲线的准确解释是动态监测和管理储层所需的重要科学步骤。当前,常规测井的准确解释通常可用于垂直井。但是,对于水平井,尤其是产量低的井,高精度解释仍然是空白。因此,开发一种能够有效提高水平井生产剖面解释精度的新模型具有重要意义。实际上,从实验中观察到,对于水平井中的多相流,随着井眼轨迹的倾角变化,流型会发生显着变化。这是因为流态与流量和测得的相流数据(即 (石油,天然气和水的生产数据),该数据随沿水平井轨迹的倾角而变化。基于以上观察,提出了一种新的方法来解释具有相同倾角的水平井的生产剖面。实测数据与数值计算结果的比较表明,新建立的方法可以显着提高水平井生产流体剖面的解释精度。因此,通过对不同类型的井进行生产测井来丰富解释方法。通过比较实验测量数据和计算结果,表明新建立的方法能够显着提高水平井流体生产剖面的解释精度。解释方法进一步扩展到不同井类型的生产测井。通过应用这种新方法,可以精确地识别主要的产水层,以防止和控制水平井的注水以及堵水的形成。因此,可以有效地提高油气采收率。

更新日期:2020-09-23
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