红雁池新11井温度梯度测量及动态分析  

Temperature Gradient and Dynamic Analysis in Hongyanchi Xin 11 Well

作　　者：刘冬英[1] 高守全[2] 李新勇[2] 许秋龙[2] 何案华[1] 李晓东[2] 

机构地区：[1]中国地震局地壳应力研究所(地壳动力学重点实验室),北京市安宁庄路1号100085 [2]新疆维吾尔自治区地震局,乌鲁木齐市科学二街338号830011

出　　处：《大地测量与地球动力学》2017年第4期432-435,共4页Journal of Geodesy and Geodynamics

基　　金：中央级公益性科研院所基本科研业务费专项(ZDJ2014-04);国家自然科学基金(41104051)~~

摘　　要：采用SZW-1A数字式温度计,对红雁池新11井进行温度梯度测量及动态分析,测量步进为10m,每个测量点观测时间约1个星期。取完整、稳定的1d数据进行计算,将日均值作为该点的温度观测值,计算该天观测数据的标准差和最大值最小值的差来进行动态分析。通过测量与分析认为,红雁池新11井梯度-深度拐点在400m处,稳定性-深度拐点在470m,而岩性交界面(泥岩到石灰岩的转换)在380m处,井孔套管到378m。从梯度-深度关系与稳定性-深度关系来看,新11井越往下,温度梯度越小,同时稳定性越好。综合测井数据,可能裸孔段为弱透水段,且受浅层低温循环水的注入影响。Using the SZW-1A digital thermometer, we survey the relationship of water temperature to depth and analyze short-term stability in Xin 11 Well, located in Hongyanchi, Xinjiang, China. We take the obser- vational step as 10 meters, continue at one week for each point, take the average value as the water tempera- ture, and compute the standard deviation of every point after the water temperature is stable. We determine the inflection point of gradient-depth is 400 m, the inflection point of stability-depth is 470 m, the interface of rocks is 380 m, and the borehole casing is 378 m. We conclude that, from the relationship of gradient-depth and stability-depth, the open borehole belongs to a weak permeability section and is inflected by low-tempera- ture water, which comes from shallow circulating water.

关 键 词：温度梯度 动态分析 地震地下流体 岩性 

分 类 号：P315[天文地球—地震学]