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Systems And Methods For Obtaining Apparent Formation Dip Using Measurements Of Different Effective Penetration Length
Systems And Methods For Obtaining Apparent Formation Dip Using Measurements Of Different Effective Penetration Length
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机译:使用不同有效穿透长度的测量值获得表观地层倾角的系统和方法
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摘要
Systems and methods for identifying formation boundaries without necessarily obtaining an azimuthal borehole image are provided. A downhole tool may be placed in a wellbore in a geological formation that has a formation boundary. First and second measurements may be obtained at a number of depths of the wellbore. The first measurement may have a first effective penetration length into the geological formation and the second measurement may have a second effective penetration length into the geological formation different from the first effective penetration length. Thus, the first measurement may detect the formation boundary at a first depth and the second measurement may detect the formation boundary at a second depth. Using a difference between the first depth and the second depth, an apparent relative angle between the wellbore and the formation boundary or an apparent formation dip, or both, may be obtained.
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