摘要：Liquid nitrogen (LN) fracturing has the potential to reduce the breakdown pressure, avoid formation damage, and eliminate the water usage. However, the proppant-carrying capability of LN fracturing is still unknown since the properties of nitrogen vary significantly with the reservoir temperature and pressure. In this paper, we simulated the proppant transport during LN fracturing in a straight fracture. First, we built the proppant transport model based on a hybrid Eulerian Lagrangian Method. Then, we validated this model against published experimental data. Subsequently, we applied the model to elucidate the factors that affect the transport efficiency. Finally, suggestions for improving the proppant placement are given. The results show that the proppant-carrying capacity of nitrogen increases with the increasing migration distance during LN fracturing. Furthermore, the most effective way to improve the sand placement is reducing proppant density. The key findings can help to understand the proppant migration capacity during LN fracturing.
© 2020 Elsevier B.V.

ISSN号：1875-5100

卷、期、页：v 84,

发表日期：2020-12-01

期刊分区（SCI为中科院分区）：二区

收录情况：SCIE（科学引文索引网络版）,EI（工程索引）

发表期刊名称：J. Nat. Gas Sci. Eng.

通讯作者：温海涛,郑永

第一作者：杨睿月,黄中伟,武晓光,胡晓东

论文类型：期刊论文

论文概要：温海涛,杨睿月,黄中伟,郑永,武晓光,胡晓东，Numerical simulation of proppant transport in liquid nitrogen fracturing，J. Nat. Gas Sci. Eng.，2020，v 84,

论文题目：Numerical simulation of proppant transport in liquid nitrogen fracturing