A sucker rod cleaning system includes an inductive heating device, a feed mechanism, a first support and a second support. An electromagnet of the inductive heating device includes a wire coil head that is configured to inductively heat a sucker rod positioned within a heating zone. The feed mechanism is configured to feed a sucker rod through the heating zone in a feed direction. The first support is positioned on an upstream side of the wire coil head, and is configured to support a portion of a sucker rod as it is fed through the heating zone by the feed mechanism. The second support is positioned on a downstream side of the wire coil head, and is configured to support a portion of a sucker rod as it is fed through the heating zone by the feed mechanism.

A technique facilitates controlled creation of pressure waves in a downhole environment. The technique enables creation of, for example, dynamic underbalance (DUB) pressure waves or dynamic overbalance (DOB) pressure waves which can be used to perform desired activities downhole. According to an embodiment, a pump is coupled with a pressure chamber and conveyed downhole into a borehole to a desired location. The pump may be operated downhole to change a pressure level in the pressure chamber until a sufficient pressure differential exists between an interior and an exterior of the pressure chamber. A release mechanism in communication with the pressure chamber is then rapidly opened to establish the desired pressure wave as the differing pressures equalize.

A technique facilitates controlled creation of pressure waves in a downhole environment. The technique enables creation of, for example, dynamic underbalance (DUB) pressure waves or dynamic overbalance (DOB) pressure waves which can be used to perform desired activities downhole. According to an embodiment, a pump is coupled with a pressure chamber and conveyed downhole into a borehole to a desired location. The pump may be operated downhole to change a pressure level in the pressure chamber until a sufficient pressure differential exists between an interior and an exterior of the pressure chamber. A release mechanism in communication with the pressure chamber is then rapidly opened to establish the desired pressure wave as the differing pressures equalize.

A method for estimating the efficiency of hole cleaning of a well-bore during drilling operations includes (a) selecting at least one feature of the drilling operation for monitoring; (b) receiving, from a sensor, data regarding the at least one feature; (c) comparing the data to a predetermined condition for the at least one feature; (d) defining an event when the data meets the predetermined condition; (e) assigning a weight to the event based on a duration of the event; and (f) estimating an efficiency of the hole cleaning based on the event and the weight of the event. The at least one feature being selected from the list consisting of: hole angle, circulation, tight spot, static hole, and bit hydraulics.

A method for estimating the efficiency of hole cleaning of a well-bore during drilling operations includes (a) selecting at least one feature of the drilling operation for monitoring; (b) receiving, from a sensor, data regarding the at least one feature; (c) comparing the data to a predetermined condition for the at least one feature; (d) defining an event when the data meets the predetermined condition; (e) assigning a weight to the event based on a duration of the event; and (f) estimating an efficiency of the hole cleaning based on the event and the weight of the event. The at least one feature being selected from the list consisting of: hole angle, circulation, tight spot, static hole, and bit hydraulics.

A method of cleaning a downhole section of a borehole delimited by side walls of a geological formation, the borehole containing a drill pipe having a bottom hole assembly with a drill bit and an electromagnet, and an annulus situated between the side walls and the drill pipe containing cutting debris resulting from drilling. The method comprises deploying a magnetorheological drilling fluid (MR fluid) into the downhole section through the drill pipe, the MR fluid entering the annulus through openings in the bottom hole assembly activating the electromagnet in the bottom hole assembly, the activated electromagnet generating a magnetic field modifies rheological properties of the MR fluid and increasing a transport rate at which cutting debris within the annulus is carried uphole in response to the magnetic field. Methods of providing hole stability and fluid displacement are also disclosed.

A method of cleaning a downhole section of a borehole delimited by side walls of a geological formation, the borehole containing a drill pipe having a bottom hole assembly with a drill bit and an electromagnet, and an annulus situated between the side walls and the drill pipe containing cutting debris resulting from drilling. The method comprises deploying a magnetorheological drilling fluid (MR fluid) into the downhole section through the drill pipe, the MR fluid entering the annulus through openings in the bottom hole assembly activating the electromagnet in the bottom hole assembly, the activated electromagnet generating a magnetic field modifies rheological properties of the MR fluid and increasing a transport rate at which cutting debris within the annulus is carried uphole in response to the magnetic field. Methods of providing hole stability and fluid displacement are also disclosed.

An instrumented wiper dart configurable at the wellsite comprising any combination of a sealing member, a sensor sub, an electronics package, and a communication system; wherein the sealing member is cylindrical in shape, releasably coupled to the wiper assembly, and configured to sealingly engage the inner surface of a workstring. The sensor sub is release releasably coupled to the wiper assembly, and includes one or more sensors to measure a property of the wellbore environment. The electronics package is releasably coupled to the wiper assembly, configured to receive one or more data sets from the sensor sub, and transmit one or more data sets to the communication sub. The communication sub is configured to transmit the one or more data sets; and wherein the instrumented wiper plug is displaced down the workstring in response to a volume of fluid pumped from surface.

A system for adapting drilling of a borehole in a subterranean formation based on comparing a received cuttings weight to an expected cuttings weight. The system comprises a processor; a non-transitory memory; at least one display; and an application stored in the non-transitory memory that, when executed by the processor, determines the received cuttings weight based on data received from a cuttings storage unit (CSU); determines the expected cuttings weight based on a current borehole depth, on a drill bit geometry, and on a cuttings density value; and presents a representation of the received cuttings weight and a representation of the expected cuttings weight on the at least one display, whereby at least one parameter of drilling of the borehole is adapted based on comparing the representation of the received cuttings to the representation of the expected cuttings weight.

A system for adapting drilling of a borehole in a subterranean formation based on comparing a received cuttings weight to an expected cuttings weight. The system comprises a processor; a non-transitory memory; at least one display; and an application stored in the non-transitory memory that, when executed by the processor, determines the received cuttings weight based on data received from a cuttings storage unit (CSU); determines the expected cuttings weight based on a current borehole depth, on a drill bit geometry, and on a cuttings density value; and presents a representation of the received cuttings weight and a representation of the expected cuttings weight on the at least one display, whereby at least one parameter of drilling of the borehole is adapted based on comparing the representation of the received cuttings to the representation of the expected cuttings weight.