The Bench Test and Field Test of Rotary Steering Motor (RSM) System
Rotary steering system may improve drilling speed, reduce downhole accidents and decrease drilling cost greatly when it is used to drill extended reach well and multilateral horizontal well. The feature and components of Rotary Steerable Motor (RSM)system are first briefly introduced in this paper : it consists of rotary steerable head, mud motor and flex sub and works in Push the Bit mode, steering or non-steering condition and each blade are controlled by using independent electromagnetic valves, mud motor provides power for bit and the hydraulic system by driving shaft; then the pre-test procedures, test set-up and procedures of bench test are described in detail: including blade sequence test, blade firing delay time test and acceptance test of RSM system, finally the note and analysis of the field tests of RSM system in ShengLi Oil Field are enumerated. The bench tests and field tests show that control method of this system is simply, reliable and easily realizable, with improvements this system will be used in practical application soon.
Key words:Rotary Steering Motor (RSM) System; Mud motor; Bench test; Field test; Steering blade
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