Operations Manual
Tool Operations Standard operation of the D-Tech tool will consist of setting a desired flow rate and RPM range and drilling ahead while monitoring surveys being taken by the MWD tool. As deviation occurs or is required, the operator will send an appropriate steering mode to the RST tool via a downlink. Different steering modes are available to achieve directional goals as the well is drilled, however it is important to establish a baseline performance for the tool early in the well. Rotary Steerable tools respond differently to many different factors. Bit selection, BHA design wellbore lithology, ROP, WOB, flowrate, and vibration (stick-slip) all have impact on the performance of the tool. It is important to monitor these parameters to ensure consistent and repeatable performance. Appendix X will have more detailed best practices to review for most applications. If you have any concerns about tool functionality, please contact D-Tech Remote support at +1 832-409-4711. They can also be reached on WhatsApp. RST Downlinking Procedure All D-Tech tools will arrive on location pre-programmed with all steering modes available. The RST uses a simple and robust system to change steering modes, commands are sent by reducing the flowrate by 15-25% and returning to the drilling flowrate in a timed sequence to create a series of pulses. All personnel involved in the downlinking process, the DD, driller etc, should be made aware of the process to ensure the downlink is carried out correctly. There are two types of downlink, circulating downlink and drilling downlink, they are both identically performed the only difference being a circulating downlink is off-bottom, and a drilling downlink is on-bottom. IT IS RECOMMENDED TO PERFORM DOWNLINKS ON BOTTOM AS MUCH AS POSSIBLE TO REDUCE SHOCK AND VIBRATION ACROSS THE BHA.
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