发明名称 |
ACTIVE MAGNETIC AZIMUTHAL TOOLFACE FOR VERTICAL BOREHOLE KICKOFF IN MAGNETICALLY PERTURBED ENVIRONMENTS |
摘要 |
An artificial toolface reference system includes a power supply providing current to a ground lead and a reference lead. A ground point is coupled to the ground lead and in electrical connection with the ground. A reference wellbore includes a reference conductor in electrical connection with the ground. The reference conductor is in electrical connection with the reference lead. A guidance sensor positioned outside the reference wellbore includes at least one magnetometer. The power supply may be used to provide a current through the reference conductor, the ground, and the ground point such that a reference magnetic field is generated along the reference conductor. The guidance sensor may measure the reference magnetic field with a magnetometer. An artificial magnetic toolface may be calculated therefrom. |
申请公布号 |
WO2016061376(A1) |
申请公布日期 |
2016.04.21 |
申请号 |
WO2015US55778 |
申请日期 |
2015.10.15 |
申请人 |
APPLIED TECHNOLOGIES ASSOCIATES, INC. |
发明人 |
MOSS, CLINTON;RIDGWAY, DOUGLAS;MARTIN, TROY;LAPORTA, ARTHUR |
分类号 |
E21B3/06 |
主分类号 |
E21B3/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|