Abstract
The zonal productivity prediction model of volume fractured horizontal wells in tight reservoirs is established in this study based on the physical model of volume fractured horizontal wells to study the near-well seepage law of volume fractured horizontal wells in unconventional tight reservoirs. The conformal transformation and iteration method are used to solve the problem. Compared with Fan Zifei's and Ning Zhengfu's method, the optimization of fractured horizontal wells' production parameters is studied. The effects of starting pressure gradient and fracture cluster number on horizontal wells' productivity with volume fracturing are analyzed. Multivariate regression analysis is used to rank the importance of influencing factors. The results show that the starting pressure gradient has the most significant impact on capacity. The application example of volume fractured horizontal wells in Lucaogou tight reservoir shows that the zonal productivity model established in this study can be used to predict the initial productivity of volume fractured horizontal wells. Thus, through theoretical analysis and numerical simulation, the productivity prediction model of horizontal wells with volume fracturing has certain guiding significance for the effective development of tight reservoirs.
Highlights
EARTH SCIENCES RESEARCH JOURNALYang Fan1, Liu Lifeng1, Ran Qiquan1*, Kong Jinping2, Xu Mengya1, Dong Jiaxin1 1PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China 2Langfang Branch, PetroChina Research Institute of Petroleum Exploration and Development, Langfang, China 065007
As an important part of energy, oil is the foundation of national economic development
The results show that the calculated results by Ning zhengfu’s method are the closest to those by the productivity equation deduced in this study, but these results are higher than the actual productivity (Yin, 2018)
Summary
Yang Fan1, Liu Lifeng1, Ran Qiquan1*, Kong Jinping2, Xu Mengya1, Dong Jiaxin1 1PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China 2Langfang Branch, PetroChina Research Institute of Petroleum Exploration and Development, Langfang, China 065007
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