地层温度确定的新方法及实际指导意义探讨

A New Method of Determining Formation Temperature

在稠油油藏老区块钻调整井过程中,提前停注高压蒸汽井的温度场在一定时间内会继续热传递,从而使储层的温度有所升高。在油气田开发中,尤其是在二次采油和三次采油过程中,在许多情况下都要遇到地下热力学问题。储层温度的确定是制订油气田开发方案的一个重要参数,如何预测储层温度尤为重要。通过分析克拉玛依某热采区块水平井钻井中钻井液与地层的热传导特点,结合传热学的基本原理,提出了一种简易实用的确定地层温度的新方法。实例计算结果表明,利用该新方法计算出的地层温度与实测地层温度较吻合,证明提出的方法可行、可靠。最后分析了储层温度对确定储层保护技术措施的指导作用。

During the process of drilling adjustment wells in old heavy oil reservoirs, the heat transfer of temperature field of high pressure steam wells continuously even after the injection has been stop which will increase the formation temperature. There are thermodynamics problems during oilfield development especially in secondary and tertiary recovery. Formation temperature is an important parameter in oilfield development and how to predict formation temperature is very important. Based on heat transfer features of drilling fluid and formation, a novel and practicable method has been developed to determine formation temperature. Case studies show that the theoretical temperature distribution is consistent with actual measured data and thus prove its feasibility and reliability. Finally, guidance of reservoir temperature to determine pay zone protection measurements is analyzed in this paper.