测井技术在压裂工程中的应用

The Application of Well Logging Technology in Fracturing Engineering

张传举 王显南 王健 徐宏亮

ZHANG Chuanju WANG Xiannan WANG Jian XU Hongliang

中海油田服务股份有限公司，广东深圳　518054 中海石油（中国）有限公司深圳分公司，广东深圳　518054

China Oilfield Services Limited, Shenzhen Guangdong 518054, China Shenzhen Branch, CNOOC (China) Ltd., Shenzhen Guangdong 518054, China

近年来，低孔渗储层逐渐成为海上油田的勘探重点，受条件限制，海上压裂作业较为困难。通过测井技术在压裂过程中的应用，保障压裂作业的顺利进行。以南海东部某井为例，在压裂前设计阶段，通过测井资料得到储层定量参数，选择优势压裂段。通过声波和固井数据进行储层地应力分析、岩石力学参数计算和井筒完整性评价，提供有效工程参数，最终得到压裂优化方案。施工过程中，通过破裂压力曲线优化射孔参数，保证压裂施工顺利进行。压裂结束后，应用压裂前后声波和固井质量的对比获取裂缝延伸高度、改造空间体积等参数，对压裂效果进行评价。通过压裂过程中测井技术的应用，可以有效指导压裂作业，获得更好的压裂效果。

In recent years, reservoirs with low porosity and permeability have gradually become the focus area of offshore oil field exploration. However, it is difficult to conduct fracturing operation on the sea due to multiple conditions restriction. Through the application of logging technology in fracturing process, the smooth operation of fracturing can be guaranteed. This paper took a well in the eastern South China Sea as an example. In the pre-fracturing design stage, the quantitative parameters of reservoir were obtained by logging data, and the favorable fracturing zone was selected. Reservoir in-situ stress analysis, based on acoustic wave and cementing quality, rock mechanical parameters calculation and well bore integrity evaluation were carried out to provide effective engineering parameters and finally the fracturing optimization plan was obtained. In the construction process, the perforation parameters were optimized through the fracture pressure curve to ensure the smooth fracturing operation. After fracturing, acoustic wave and cementing quality before and after fracturing were compared to obtain fracture extension height, volume of reconstruction space and other parameters to evaluate the fracturing effect. The application of logging technology in fracturing process can effectively guide fracturing operations and then better fracturing results are obtained.

https://doi.org/10.3969/j.issn.1008-2336.2023.03.051