公开(公告)号：US4947682A

公开(公告)日：1990-08-14

申请号：US322790

申请日：1989-03-13

申请人： Roger N. Anderson ,  Colin F. Williams

发明人： Roger N. Anderson ,  Colin F. Williams

IPC分类号： E21B47/06 ,  G01N25/18 ,  G01V9/00

CPC分类号： E21B47/065 ,  G01N25/18 ,  G01V9/005

摘要： Oil and gas horizons in a wellbore are located by establishing from thermal logs thermal gradients for successive intervals free of drilling-induced thermal disturbances, identifying the mineral abundances surrounding the wellbore at each of said intervals, establishing ideal thermal conductivities for said mineral abundances based on assumptions that sand-rich formations have high thermal conductivities and are water-bearing and that shale-rich formations have low conductivities, determining an ideal heat flow at each interval by multiplying the thermal gradient at such interval by the ideal thermal conductivity of the mineral abundances at the interval, determining the average ideal heat flow for all of the intervals, and identifying the zones of the wellbore exhibiting anomalous ideal heat flows that are higher than the average heat flow.

摘要翻译： 井眼中的石油和天然气视野是通过从热原子热梯度建立连续的间隔，没有钻孔引起的热扰动，识别在每个间隔周围的井筒周围的矿物质丰度，建立基于以上的矿物丰度的理想热导率 富砂地层具有高导热性并且是含水的，并且富含页岩的地层具有低电导率的假设，通过将这种间隔的热梯度乘以矿物质丰度的理想热导率来确定每个间隔处的理想热流 以间隔确定所有间隔的平均理想热流，并且识别出高于平均热流的异常理想热流的井眼区域。