旋冲钻井技术在内蒙古意1井的应用

Application of Rotarypercussion Drilling Technology in Yi1 Well of Inner Mongolia

摘要:

为了提高内蒙古意1井3000 m以深下部井段机械钻速，采用了射流冲击器旋冲钻井提速技术。根据地层岩性特点，通过冲击器台架性能测试，优选出了冲击器的冲击功及冲击频率，确定了旋冲钻井参数。射流冲击器配合牙轮钻头应用井段为3675～3817 m，通过合理确定水力参数及冲击器的性能参数，取得了预期的提速效果，达到了提速增效的目的。冲击器纯钻共计185 h，总进尺142 m，采用旋冲钻井技术，在相同地层及钻头条件下，旋冲钻井2趟钻进进尺较以前转盘钻进4趟钻进进尺多10 m，提高机械钻速达42%，为白音查干区块钻井提供了一项新的技术手段。

Abstract:

In order to improve the ROP of lower section under 3000m depth in Yi1 well of Mongolia, hydroefflux hammer rotarypercussion drilling technology was used. According to the characteristics of the formation lithology, the impact power and the frequency were selected by the hammer rig testing to determine the rotarypercussion drilling parameters. The hydroefflux hammer was used in the section of 3675m to 3817m with the cone bit. With the reasonable hydraulic parameters and performance parameters of the hammer, the desired high ROP was achieved. The net drilling time of the hammer was 185h with total footage of 142m; under the conditions of the similar stratum and the bit, the footage of 2 rounds rotarypercussion drilling was 10m more than that of previous 4 rounds rotary drilling, and the ROP was increased by 42%, the rotarypercussion drilling technology became a new technical means for Baiyinchagan area.