摘要
ECLIPS5700系列的1239双侧向仪器在大井眼、高阻地层及高矿化度泥浆井况下测井时,因发射电流发散,导致所测的浅侧向电阻率偏低。针对此问题,参照EXCELL2000系列的DLLT双侧向测井仪,设计了一种具有DLLT优点的新型强聚焦双侧向测井仪KG2012,该仪器可实现电流强聚焦,在大井眼、高阻地层及高矿化度泥浆井况下,较好地解决了1239所测得的浅电阻率偏低的测井难题,在实际测井时取得了较好的测井效果。
The shallow apparent resistivity of 1239 dual laterolog tool of ECLIPS5700 system is lower than the true formation resistivity because of current diffusing caused by bad conditions,such as large borehole,high resistivity formation and highly saline drilling fluid.In view of this,the KG2012 dual laterolog tool,which has the advantage of DLLT,has been designed.The KG2012 can strong focus the current into the formation and solve the problem existing in the 1239dual laterolog tool,and has obtained the good effect when logging under the bad conditions of large borehole,high resistivity formation and highly saline drilling fluid.
出处
《石油仪器》
2014年第1期17-18,22,共3页
Petroleum Instruments
关键词
双侧向测井
大井眼
强聚焦
高矿化度泥浆
dual laterolog
large borehole
strong focusing
highly saline drilling fluid
