Abstract: An enhanced oil recovery method in which carbon dioxide is injected into a well to pressure the well or add lift a production flow from the well recaptures the injected carbon dioxide for reinjection into the well for lift or into another well in a group of for pressuring the well or adding lift to the production flow from the well. Geothermal energy in the production stream can be converted to electrical power for use in the recapturing of the carbon dioxide or other operations at the well site.

Abstract: In at least one embodiment, a control system may include a processor coupled to the database. The control system may include a memory accessible to the processor and storing instructions executable by the processor for: during slide drilling, detecting an increase to a first differential pressure (?P) that is greater than a first threshold pressure. In at least one embodiment, the control system may responsive to detecting the first ?P, determining a time duration for which the first ?P exceeds the first threshold pressure. In at least one embodiment, the control system may responsive to the first ?P exceeding the first threshold pressure for less than a first threshold time, continuing the slide drilling without modifying a drilling parameter.

Abstract: Systems and methods for drill head position determination are disclosed. A method for determining a position of a drill head of a drilling machine may include: retrieving a stored rotational position of at least one sheave and a stored position of the drill head; measuring the rotational position of the at least one sheave using a sheave sensor; initially calibrating the rotational position of the at least one sheave before the drill head moves; dynamically determining the position of the drill head based on the rotational position of the at least one sheave while the drill head is moved; and storing the rotational position of the at least one sheave and the position of the drill head during a shutdown event of the drilling machine.

Abstract: A window cutting system includes a whipstock having an outer surface, an inner surface, a recess, and a passage extending through the outer surface and the inner surface in the recess. A window mill is connected to the whipstock. The window mill includes a body having a tip portion, a pressure compartment formed in the tip portion, and an axial passage extending though the tip portion from the pressure compartment. A pin connects the window mill and the whipstock. The pin is arranged in the pressure compartment and extends through the axial passage and the passage into the recess. The pin is axially shiftable relative to the window mill and the whipstock when exposed to pressure in the pressure compartment.

Abstract: A gas-lift system and method, of which the gas-lift system includes a first valve configured to be coupled to a production tubing, a second valve configured to be coupled to the production tubing at a position that is subjacent to the first valve, and a control line coupled to the first valve and the second valve, and configured to apply a control line pressure to the first and second valves, the control line pressure applied by the control line being independent of an annulus pressure in the annulus and a production tubing pressure in the production tubing. The first valve is configured to actuate at least partially in response to the control line pressure, and the second valve is configured to actuate at least partially in response to the control line pressure.

Abstract: The swivel device attaches to a bowl or is implemented as a component of the bowl. The swivel device enables adjustment of the bowl to align the outlet with the flowline. A flange of the swivel device includes multiple fastener apertures for securing the flange to the stack. The swivel device secures the bowl to the stack while allowing rotation of the bowl. Rotation of the bowl adjusts the positioning of the outlet to align the outlet with the flowline for connecting the outlet to the flowline.

Abstract: Disclosed herein are embodiments of a pressure compensation piston and embodiments of rotary seal assemblies. In one embodiment, a pressure compensation piston for use with a rotary seal assembly includes a stepped piston having an opening extending there through for positioning the stepped piston about a rotatable shaft of a rotary seal assembly. In accordance with this embodiment, the pressure compensation piston further includes a rotary seal positioned along a radial surface of the opening for sealing the stepped piston relative to the rotatable shaft.

Abstract: A system and method for controlling a gas supply to provide gas lift for a production wellbore makes use of Bayesian optimization. A computing device controls a gas supply to inject gas into one or more wellbores. The computing device receives reservoir data associated with a subterranean reservoir to be penetrated by the wellbores and can simulate production using the reservoir data and using a physics-based or machine learning or hybrid physics-based machine learning model for the subterranean reservoir. The production simulation can provide production data. A Bayesian optimization of an objective function of the production data subject to any gas injection constraints can be performed to produce gas lift parameters. The gas lift parameters can be applied to the gas supply to control the injection of gas into the wellbore or wellbores.

Abstract: A hydraulic rock breaking machine and an apparatus and method for monitoring operation of the same is provided. The apparatus includes at least one pneumatic sensor arranged for monitoring an inner space of the machine and at least one control unit configured to receive and process the pneumatic sensing data.

Abstract: A retrievable setting tool includes a collapsible expansion punch formed by sections. Each section includes an external surface that forms a portion of an expansion face of the collapsible expansion punch. Some sections are capable of sliding relative to other sections. As such, the overall shape of the expansion face may be continuous or discontinuous. The retrievable setting tool could be inside a wellbore to set an expandable member, such as a plug assembly, a patch, a liner hanger, or a packer.

Abstract: A shock absorber apparatus includes a rod; a tool connection on a first end of the rod; a piston on a second end of the rod; a flange on the rod between the tool connection and the piston; a ring connection slidably connected to the rod between the tool connection and the flange; a first spring between the ring connection and the flange to bias the ring connection axially away from the flange; a sleeve, connected to a second spring between the second spring and the piston, slidably encircling the piston and a portion of the rod, and extending past the piston to a pumpdown connection; and a fin. A method for a placing a tool in a landing ring of a drilling tubular includes using the shock absorber apparatus to absorb shocks caused by the landing operation.

Abstract: The modular bowl system provides a detachable bowl top and a modular bottom. The bowl top detaches to allow for easy repair of the bowl system should the bowl top become damaged. The detachable modular bottom securing to the bowl body for attaching the bowl body to the annular. The modular bottom provides a fixed attachment or a rotatable attachment of the bowl body with the annular. The modular bottom provides different sized bottom flanges for attachment to different sized annulars. The bowl body rotates for positioning of the bowl and the outlets and the inlet of the bowl for attachment to the flow line.

Abstract: System and methods for detecting a composition in a wellbore during a cementing operation. An electrochemical cell can be disposed towards an end of a wellbore. The electrochemical cell can generate electrical energy in response to a physical presence of a composition at the electrochemical cell. The composition can be pumped from a surface of the wellbore during a cementing operation of the wellbore. Further, a telemetry signal indicating the physical presence of the composition at the electrochemical cell can be generated based on the electrical energy generated by the electrochemical cell. As follows, the telemetry signal can be transmitted to the surface of the wellbore.

Abstract: A well (10) in a geological structure (11), the well (10) comprising: a first casing string (12a) and a second casing string (12b) inside the first casing string (12a) and defining a first inter-casing annulus (14a) therebetween. A wirelessly controllable valve (16a), in the second casing string (12b) provides fluid communication between the first inter-casing annulus (14a) and a second casing bore (14b). The first or second casing string are less than 250 meters longer in length than the second or first casing string respectively and may be the same length. The distal ends of the first and second casing strings may be in a substantially impermeable formation (11). A number of benefits can be realised from such an arrangement. For example, in the event of a “blow-out”, kill fluid may be introduced into the well bore without the need to drill a relief well.

Abstract: An instrumented coupling for pipe joints is described herein. The instrumented coupling includes a first threaded end configured to thread to a first pipe joint and a second threaded end configured to thread to a second pipe joint. The instrumented coupling also includes a sensor configured to obtain a measurement of a parameter of a well and a communications device configured to communicate to a receiving device outside of the well. The instrumented coupling further includes a processor configured to execute instructions in a data store. The instructions direct the processor to read the measurement from the sensor, compare the measurement from the sensor to a preset limit, and generate a signal within the communications device based, at least in part, on the measurement.

Abstract: Methods for enhancing the conductivity of fractures in a subterranean formation using electrically controlled propellants are provided. In some embodiments, the methods comprise: introducing an electrically controlled propellant into one or more secondary boreholes in a subterranean formation near a main well bore that penetrates the subterranean formation; igniting the electrically controlled propellant in the secondary boreholes, whereby at least a portion of the region of the subterranean formation near the secondary borehole is at least partially ruptured by the ignition of the electrically controlled propellant in the secondary boreholes; and introducing a fracturing fluid into the main wellbore at or above a pressure sufficient to create or enhance at least one primary fracture in the subterranean formation that extends into at least a portion of the ruptured region of the subterranean formation.

Abstract: A downhole tool including a tubular member having an outer surface and an inner surface defining a flow bore. An expandable member is arranged on the outer surface. The expandable member is selectively radially outwardly expandable. An activation mechanism is operatively connected to the expandable member. The activation mechanism is operable to radially outwardly expand the expandable member. A control line extends along the outer surface and over the expandable member. A control line guidance system is operable to shift the control line radially outwardly from the outer surface.

Abstract: An anchoring device comprises a degradable substrate; and a ceramic biting member secured to an outer surface of the degradable substrate and configured for engagement with another member, the ceramic biting member comprising a ceramic material which has a density of greater than about 90% of theoretical density and contains one or more of the following: Al2O3; MgO; CaO; SiO2; TiO2; Y2O3; ZrO2; SiC; BN, or Si3N4.

Abstract: Presented herein are apparatus and methods that alleviate incidence of stuck pipes in downhole environments. In some embodiments, the apparatus and methods described herein include a drill pipe for drilling operations including: a dissolvable layer deposited on a portion of an outer surface of the drill pipe; and a tunnel connected to the dissolvable layer.

Abstract: A downhole tool, for selectively reaming a wellbore or stabilizing drill string components within a wellbore, includes an elongate tool body adapted to receive reamer cartridges or stabilizer cartridges. The reamer cartridges are radially insertable into corresponding pockets in the tool body, with each reamer cartridge having a reamer insert with an array of cutting elements. The reamer insert is disposed within a bushing and is rotatable relative thereto, about a rotational axis transverse to the longitudinal axis of the tool. However, the rotational axis is offset from the tool body axis, resulting in eccentric contact of the cutting elements with the wall of the wellbore, which in turn imparts rotation to the reamer insert when the tool is moved axially through a wellbore without rotation. When the tool is used for stabilization, the reamer cartridges are removed and replaced with stabilizer cartridges having stabilizer inserts with hard-faced stabilizer cones.