作者：李俊南¹, 刘洪¹, 庞进¹, 奎明清², 温中林², 李倩³

作者单位：1. 重庆科技学院石油工程学院, 重庆 401331;
2. 中国石油青海油田分公司, 青海 格尔木 736202;
3. 中国石油西南油气田安全环保与技术监督研究院, 四川 成都 610041

关键词：多层砂岩气藏隔层;压力突破测试;气体流动状态;充填模型

摘要：

多层砂岩气藏隔层突破压力存在差异，导致水窜现象的规律研究更加复杂。通过物理试验，可以深入认识其对水窜规律的影响。该文在充分调研隔层水窜试验的基础上，提出一种新的隔层突破压力测试方法，在模拟气体流动状态条件中，建立三维岩心充填模型进行模拟试验。该方法考虑因素全面，突破压力测试准确，根据试验结果分析泥质含量与突破压力之间的关系，结果表明：隔层泥质含量与突破压力之间呈二项式关系，泥质含量越低突破压力越小，且泥质含量在40%~50%范围内，突破压力相差较小，当泥质含量高于55%以后，突破压力递增几乎呈线性关系。

Research on interlayer breakthrough pressure test of multi-layer sandstone gas reservoir

LI Junnan¹, LIU Hong¹, PANG Jin¹, KUI Mingqing², WEN Zhonglin², LI Qian³

1. Petroleum Engineering College, Chongqing University of Science and Technology, Chongqing 401331, China;
2. China Petroleum Natural gas Development in Qinghai Oilfield Company, Golmud 736202, China;
3. Petro China Southwest Oil Gasfield Company Safety Environment Technology Supervision Research Institute, Chengdu 610041, China

Abstract: Difference in interlayer breakthrough pressure of multi-layer sandstone gas reservoir makes understanding of rules of water channeling phenomenon more complex. Through physical experiment, can well understand its impact on water channeling regularity. Based on the research of the interlayer water channeling test, this paper proposes a new method of interlayer breakthrough pressure test, and establishes the three-dimensional core filling model in the simulation of gas flow state conditions for simulation test. This method not only takes more factors into consideration, but also makes the test result more accurately. Correlation between shale content and breakthrough pressure is analyzed based on the test results, and the results demonstrate the binomial relationship between shale content and breakthrough pressure, wherein the lower the shale content is, the smaller the breakthrough pressure is. When the shale content is within 40%-50%, and the breakthrough pressure difference is small. When shale content is higher than 55%, increasing breakthrough pressure takes on almost linear relationship.

Keywords: interlayer of multi-layer sandstone;breakthrough pressure test;gas flowing condition;core filling model

2016, 42(9): 134-138  收稿日期: 2016-3-29;收到修改稿日期: 2016-5-4

基金项目: 国家自然科学基金项目（51374265）

作者简介: 李俊南(1990-),男,重庆市人,硕士研究生,专业方向为石油工程油气田开发。

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