Characterization and removal of errors due to local magnetic anomalies in directional drilling
نویسندگان
چکیده
Directional drilling has evolved over the last few decades to become standard operational practice in the oil and gas exploration industry. One method of steering utilizes a technique known as magnetic Measurement While Drilling (MWD). Vector measurements of geomagnetic fields along a well-bore are used to determine it orientation. This method is advantageous in that it is inexpensive and efficient. However, it can suffer from the errors caused by local magnetic anomalies such as those produced by telluric currents and magnetic geologic units. We have developed method to quantify the error associated with magnetic geologic units, and correct the drilling process for this error.
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