塔里木顺托果勒地区地应力方位的室内求取

In-situ Stress Orientation Indoor Determination in Shuntuoguole Area of Tarim Basin

确定地层地应力地理方位对油气资源的高效开发具有重要的意义,通过提出的利用波速各向异性结合古地磁岩心定向来确定地应力地理方位的新方法研究了塔里木盆地顺托果勒地区的地应力方位分布情况。现场应用表明:顺托果勒地区最小水平地应力方位布局较为清晰,大致以NE走向分布;新方法测试结果具有较高的精度和可靠性,可为该区块的勘探、开发提供重要基础数据支撑;且具有岩心利用率高、可操作性强、成本低等优点,具有很好的推广应用价值。

It is of great significance to determine the geographical orientation of in-situ stress for the efficient development of oil and gas resources. A new method is proposed to determine the geographical orientation of in-situ stress by using acoustic anisotropy and paleomagnetic core orientation technique. Laboratory tests are carried out to determine the orientation distribution of in-situ stress in Shuntuoguole area of Tarim Basin. The field application shows that the direction of minimum horizontal stress distribution in the area is clear,generally distributing in the direction of NE. The new method test results have higher anastomosis and reliability. It can provide important basic data support for the exploration and development of the block. Meanwhile,the new method has the advantages of high core utilization rate,strong operability and lower cost,and has good application value.