An apparatus for combined coring and drilling in a wellbore that includes a core drilling assembly with a coring drill head, an outer tubing for conveying forces to the drill head, an inner tubing with a lower end adapted for receiving a core sample. The apparatus further includes: a lifting device; closure elements with embedded cutting implements for cutting the core sample; and one or more controller device(s) for controlling activation and deactivation of the closure elements. The closure elements are connected to the core drilling assembly below an opening of the inner tubing such that, when in an open position the core sample can enter the inner tubing, and when in a closed position core material is cut and the cut core material is prevented from entering the inner tubing and exits to the borehole annulus via drill head openings provided in the wall of the coring drill head.
A core drilling apparatus adapted to be converted between a core drilling assembly and a full-diameter drilling assembly and a method enabling this. The apparatus comprises a coring drill head (200), an outer tubing (210) for conveying forces to the drill head (200), an inner tubing (220) with an upper end connected to a lifting device (230) and a lower end adapted for receiving a core sample, conveyance means (240) connected to the upper end of the outer tubing (210), and where the lifting device (230) is adapted to run between an upper and lower position within the outer tubing (210). The coring drill head (200) comprises closure elements (201) with integrated cutting implements that when in a closed or partly closed position enable the drilling head (200) to operate with full diameter drilling and with the closure elements (201) in an open position enable the drilling head (200) to operate as a coring drill head by letting rock sample pass into the inner tubing (220). The lifting device (230) comprises a release mechanism that when activated, releases forces acting on the lifting device (230), such that when the lifting device (230) is in an upper position when activated, the lifting device (230) lowers the inner tubing (220) thereby pushing the closure elements (201) in an open position, and when the lifting device (230) is in a lower position when activated, the lifting device (230) lifts the inner tubing (220) from the closure elements (201) such that the closure elements (201) will be in a closed or partly closed position.
A core drilling apparatus adapted to be converted between a core drilling assembly and a full-diameter drilling assembly and a method enabling this. The apparatus comprises a coring drill head (200), an outer tubing (210) for conveying forces to the drill head (200), an inner tubing (220) with an upper end connected to a lifting device (230) and a lower end adapted for receiving a core sample, conveyance means (240) connected to the upper end of the outer tubing (210), and where the lifting device (230) is adapted to run between an upper and lower position within the outer tubing (210). The coring drill head (200) comprises closure elements (201) with integrated cutting implements that when in a closed or partly closed position enable the drilling head (200) to operate with full diameter drilling and with the closure elements (201) in an open position enable the drilling head (200) to operate as a coring drill head by letting rock sample pass into the inner tubing (220). The lifting device (230) comprises a release mechanism that when activated, releases forces acting on the lifting device (230), such that when the lifting device (230) is in an upper position when activated, the lifting device (230) lowers the inner tubing (220) thereby pushing the closure elements (201) in an open position, and when the lifting device (230) is in a lower position when activated, the lifting device (230) lifts the inner tubing (220) from the closure elements (201) such that the closure elements (201) will be in a closed or partly closed position.
A core drilling apparatus and a method for converting between a core drilling assembly and a full-diameter drilling assembly by means of a lifting device and a coring drill head with closure elements and integrated cutting implements. The lifting device comprises a release mechanism that when activated, releases forces acting on the lifting device, such that when the lifting device is in an upper position when activated, the lifting device lowers an inner tubing thereby pushing the closure elements of the drill head in an open position, and when the lifting device is in a lower position when activated, the lifting device lifts the inner tubing from the closure elements such that the closure elements is in a closed or partly closed position.
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Electric drills, drilling machines and parts thereto;
drilling bits [parts of machines], core drill bits [parts of
machines]. Drilling, core drilling, oil and gas drilling; technical
consultancy services relating to core drilling and oil and
gas drilling; repair and installation services related to
core drilling, oil and gas drilling. Oil and gas exploration; technical consultancy services
relating to exploration, drilling technology and geophysical
surveys for the oil and gas industry.
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Electric drills, drilling machines and parts thereto;
drilling bits [parts of machines], core drill bits [parts of
machines]. Drilling, core drilling, oil and gas drilling; technical
consultancy services relating to core drilling and oil and
gas drilling; repair and installation services related to
core drilling, oil and gas drilling. Oil and gas exploration; technical consultancy services
relating to exploration, drilling technology and geophysical
surveys for the oil and gas industry.
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
drilling machines; power drill bits, core drilling bits Subsurface reservoir drilling, hydrocarbon reservoir drilling, continuous core drilling, oil and gas drilling; technical consultancy services relating to core drilling and oil and gas drilling; repair and installation services related to core drilling, oil and gas drilling Oil and gas exploration; technical consultancy services relating to exploration, drilling technology and geophysical surveys for the oil and gas industry
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
drilling machines; power drill bits, core drilling bits Subsurface reservoir drilling, hydrocarbon reservoir drilling, continuous core drilling, oil and gas drilling; technical consultancy services relating to core drilling and oil and gas drilling; repair and installation services related to core drilling, oil and gas drilling Oil and gas exploration; technical consultancy services relating to exploration, drilling technology and geophysical surveys for the oil and gas industry
9.
METHOD AND APPARATUS FOR ALTERNATING BETWEEN CORING AND DRILLING WITHOUT TRIPPING OPERATIONS
An apparatus and method for performing combined coring and drilling in a wellbore without performing a tripping operation. The apparatus comprises a core drilling assembly with a coring drill head (200), an outer tubing (210) for conveying forces to the core bit, an inner tubing (220) with an upper end connected to a bearing assembly (222) and a lower end adapted for receiving a core sample (250). The apparatus further comprises a lifting device (230), for controlling the position of the inner tubing (220) along the longitudinal axis of the core drilling assembly, that is connected to or is arranged as a part of the bearing assembly (222) and closure elements (201) with embedded cutting implements (208) for cutting core sample (250), and where the closure elements (201) are connected to the core drilling assembly at the lower end and below the opening of the inner tubing (220) such that, when in an open position enables core sample (250) to enter the inner tubing (220), and when in a closed position prevents core material from entering the inner (tubing (220) and then cut core material letting it exit to the borehole annulus (262) via drill head openings (202) provided in the wall of the coring drill head (200), and one or more controller device(s) (231) for activating and deactivating the closure elements (201). The method comprises activating or deactivating the closure elements (201), that are connected to the core drilling assembly at the lower end and below the opening of the inner tubing (220), between an open or closed position for opening or closing access to the inner tubing (220), and where the closure elements (201) are provided with embedded cutting implements (208) for cutting the core material when in a closed position, and where activation and deactivation of the closure elements (201) are performed with a lifting device (230) for controlling the position of the inner tubing (220) along the longitudinal axis of the core drilling assembly.
A technology is described of a system capable of altering between extracting a core sample from, or drilling of, a downhole subterrain formation. In coring mode the core is encapsulated downhole at in-situ conditions with a material capable of providing a pressure tight seal around the core, protecting the core and temporary storing the core downhole in an inner string for later retrieval. In drilling mode the unwanted sections of the core is grinded away and the material discarded. No tripping to surface is required to change the composition of the drillstring to alter between drilling mode and coring mode. Downhole sensor technology and intelligence is used to distinguish between areas of interest where the core is encapsulated and kept, and areas of no interest where the core is discarded.
E21B 25/08 - Coating, freezing, consolidating coresRecovering uncontaminated cores or cores at formation pressure
E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelinesProtecting measuring instruments in boreholes against heat, shock, pressure or the like
E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
A technology is described of a system capable of altering between extracting a core sample from, or drilling of, a downhole subterrain formation. In coring mode the core is encapsulated downhole at in-situ conditions with a material capable of providing a pressure tight seal around the core, protecting the core and temporary storing the core downhole in an inner string for later retrieval. In drilling mode the unwanted sections of the core is grinded away and the material discarded. No tripping to surface is required to change the composition of the drillstring to alter between drilling mode and coring mode. Downhole sensor technology and intelligence is used to distinguish between areas of interest where the core is encapsulated and kept, and areas of no interest where the core is discarded.
