摘要
塔东地区超深井小井眼取芯主要存在地层复杂多变,有的裂缝发育,岩芯破碎,有的坚硬致密;取芯井段深,摩阻大,钻具易弯曲、振动;钻头选型难等问题。通过近几年已完成的9口井的取芯,不断的探索完善,取得了一定的经验,单次取芯获得的岩芯逐渐增加。为塔东及其它地区超深井小井眼灰岩和云岩地层取芯提供了参考和借鉴。
The main problems of slim hole coring in ultra deep wells in Tadong area are as follows:the formation is complex and changeable,some fractures are developed,some cores are broken,some are hard and dense;The coring section is deep,the friction is large,and the drilling tool is easy to bend and vibrate;The bit selection is difficult.In recent years,the coring work of 9 wells has been completed,and some experience has been obtained through continuous exploration and improvement.The single coring rate has gradually increased,which provides a reference for coring ultra deep slim hole in carbonate formation in Tadong and other areas.
作者
钱可贵
Qian Ke-gui(Research Institute of Drilling Engineering Technology,Daqing Drilling Engineering Corporation,Daqing Heilongjiang 163413,China)
出处
《西部探矿工程》
CAS
2021年第10期26-29,共4页
West-China Exploration Engineering
关键词
塔东地区
小井眼
超深井
取芯钻头
收获率
Tadong area
slim hole
ultra deep well
coring bit
adoption rate