90results about How to "Improve drilling performance" patented technology

A method for improving drilling performance of a drilling tool assembly is disclosed. The method includes identifying a drilling performance parameter to be improved. One or more potential solutions are defined to improve the drilling performance parameter. A drilling simulation is performed to determine the dynamic response of the drilling tool assembly during a drilling operation. Determining the dynamic response includes determining the interaction of a cutting element of a drill bit with an earth formation. Improvement in the drilling performance parameter is determined based upon the drilling simulation.

A method for determining a drilling state of a bottom hole assembly in a wellbore includes acquiring one or more downhole sensor measurements and processing the sensor measurements using a downhole processor to determine a drilling state of the bottom hole assembly. An operating state of the bottom hole assembly may be automatically changed in response to the determined drilling state. A method for computing a dynamic drilling energy of a bottom hole assembly includes acquiring at least one sensor measurement and processing the sensor measurements to obtain at least one of (i) an energy of axial motion of the bottom hole assembly, (ii) an energy of rotational motion of the bottom hole assembly, and (iii) an energy of lateral motion of the bottom hole assembly.

A bearing block is provided that may be used with a drag bit body or frame to limit depth of cut of cutters on a bit. The bearing block is designed so that it may be interchangeably replaced or repaired without necessitating alteration to a standardized bit frame. The interchangeable bearing block may be used to provide a target depth of cut (TDOC) and / or a selected contact or rubbing area to support weight on bit and limit depth of cut (DOC) for improving drilling performance of a bit. The interchangeable bearing block brings manufacturing selectability by providing a customizable product in terms of depth of cut selection and cutter penetration control for different formations, which is suitable for use with a common bit frame. A rotary drill bit assembly, a unitary cone insert bearing block for a drill bit, and a bit frame are also provided.

Methods and computer systems for performing and using drilling simulations. The drilling simulations can be used to improve drilling performance or demonstrate drilling performance of a drilling profile. One method for creating a drilling profile includes obtaining drilling profile data and performing a drilling simulation using at least a portion of the drilling profile data. Modifications are then recommended for the drilling profile data.

A screw has a screw head and a shank. The screw head has a square cavity, a hexagonal cavity or a hexagonal boss to be wedged by a screw driver for wrenching. The shank has a first asymmetrical thread at the taper to facilitate drilling holes, asymmetrical saw-type threads behind the first asymmetrical thread, and a second asymmetrical thread behind the asymmetrical saw-type threads. The shank further has a carved V-shaped tail between the first asymmetrical thread and the asymmetrical saw-type threads to facilitate cutting and debris dispelling. The screw thus formed can rapidly perform thread tapping and debris dispelling, and reduce friction and expand drilling holes and achieve fast fastening.

A hard material head (1) for a rotary percussion drill bit (2) having an elongated shaft (15) including at least three cutting edges (4) distributed circumferentially within a circumscribing circle, a bottom surface (6) located opposite the cutting edges (4) and fastened by a material bond to an end (8) of the drill bit shaft (15) of the rotary percussion drill bit (2), concave side surfaces (5) formed circumferentially between adjacent cutting edges (4), and a peripheral pocket (9) opening toward the bottom surface (6) and formed, respectively, in at least two concave side surfaces (5) located opposite one another, and in which a corresponding axial pin (10, 10′) formed on a shaft end (8) is form-locking engageable.

A simple inclined-hole drilling jig comprises a jig body having a crossover plane at the bottom to evenly press against the wood workpiece, and a beveled end member at the front concavely disposed with a guiding shaft hole extending downwardly from the beveled end member through the crossover plane. The upper end of guiding shaft hole is configured with a guide bushing for drill bit to pass through. The rear end and side surfaces of jig body are respectively formed with a reference face and sidewalls perpendicular to the crossover plane; the sidewall is at least concavely disposed with a dust guide groove intercrossing the guiding shaft hole and slidingly disposed with a graduated extension board to allow axial displacement and positioning. The end of the extension board is bent to form a retaining end plane parallel to the reference face to extendingly adjust the axle spread of reference face.

A screw has a screw head and a shank. The screw head has a square cavity, a hexagonal cavity or a hexagonal boss to be wedged by a screw driver for wrenching. The shank has four sections of threads on the periphery. A first thread is asymmetrical to facilitate drilling holes and spaced with a first threaded pitch. A second thread has a carved V-shaped tail end extended in a direction of the shank at a length larger than one of the first threaded. A third thread has asymmetrical saw-type threads, and a fourth tread is asymmetrical. The screw thus formed can rapidly perform thread tapping and debris dispelling, and reduce friction and expand drilling holes and achieve fast fastening.

A drill bit having fixed Polycrystalline Diamond Compact cutters is used to drill a borehole having a core stump therein. A plurality of additional fixed Polycrystalline Diamond Compact cutters are disposed in the dome of the bit and are usable to concentrate stresses in the top end of the core stump to facilitate the cutting down of the core stump.

A method and apparatus for holding and turning a tubular and string of tubulars, such as casing, for make-up and drilling with the tubulars are disclosed. The apparatus generally includes a spear and a clamping head, both of which are mounted to a top drive. The spear and the clamping head can be engaged to transmit torque therebetween from the top drive. In addition, an aspect of the invention provides variable height wickers positioned on slips to enable use of the slips with variable inner diameter (ID) and weight casing without deformation or rupture of the casing. Still further, a casing collar is also provided to provide reinforcement to the casing in the area of slip contact with the casing ID.

A screw with low drilling resistance comprises a head portion, a shank portion, a plurality of first threads, a drilling portion, and a plurality of second threads. Wherein, a plurality of opening slots are correspondingly defined on the second threads, and a first included angle of the first threads is smaller than a second included angle of the second threads. Thereby, the opening slots on the second threads efficiently provide the first threads with an auxiliary cutting effect and preferably offers a debris accommodating room. The first threads including the smaller first included angle favorably reinforce the bearing force of the second threads including the larger second included angle, thereby promoting the cutting effect of the screw and allowing a speedy screwing.

A method for manufacturing drill bit inserts in which the inserts are finished in a centrifugal disc finishing machine. The centrifugal disc finishing machine comprises a configured surface rotating relative to a stationary receptacle, and the inserts may be finished with a mass of materials comprising at least one of a group of media, parts, detergent, and solution. Also, a method of increasing drill bit insert performance comprising accelerating a plurality of inserts in a high-energy finishing machine, wherein the acceleration results in a generally toroidal interaction between the inserts and at least one of the group comprising media, parts, detergent, and solution.

A rotary drill bit having blades with gage pads disposed on exterior portions thereof to improve steerability of the rotary drill bit during formation of a directional wellbore without sacrifice of lateral stability. One or more of the gage pads may include radially tapered exterior portions and / or cut out portions to assist with reducing wear of the associated gage pad. For some applications, a rotary drill bit may be formed having blades with gage pads having a relatively uniform exterior surface. Hard facing material and / or buttons may be disposed on exterior portions of the gage pad to form a radially tapered portion to improve steerability, reduce wear of the gage pad and / or improve ability of the rotary drill to form a wellbore having a generally uniform inside diameter, particularly during directional drilling of the wellbore.

Downhole drilling tools designed and manufactured to minimize or reduce imbalance forces and wear by disposing cutting elements in cutter groups and cutter sets in a level of force balance and by placing impact and / or wear resistant cutters on blades subject to high impact forces and / or large loadings. Manufacturing costs may be reduced by placing inexpensive cutters on blades not subject to high impact forces and / or loadings. Some embodiments comprise designing downhole tools with combinations of thicker blades to receive high impact forces and / or loadings with thinner blades. Some embodiments comprise designing downhole drilling tools with optimized fluid-flow properties. Designing methods may comprise performing simulations on a designed tool, evaluating respective forces acting on cutters during simulated engagement with a downhole (uniform and transitional) and / or evaluating wear on cutters and bit, and / or CFD simulations to evaluate fluid-flow optimization on a tool. Various cutter layout procedures and algorithms are described.

A drill bit having fixed Polycrystalline Diamond Compact cutters is used to drill a borehole having a core stump therein. A plurality of additional fixed Polycrystalline Diamond Compact cutters are disposed in the dome of the bit and are usable to concentrate stresses in the top end of the core stump to facilitate the cutting down of the core stump.

The process of grinding the chisel edge of small spiral bit includes the following steps: regulating the relative locations of grinding wheel and bit based on the chisel edge grinding coefficient to make the tail gap of the back face in the bit aligned to the grinding wheel, fixing one of the bit and the grinding wheel and making the other move linearly along the axis of the spiral back face until the grinding wheel grinds to the center of the bit to form the second back plane in the tail gap; and turning the bit around its axis by 180 deg to grind one other symmetrical back plane. The process can decrease the sharp chisel edge angle in the bit center, raise the centering capacity of the bit, improve the drilling capacity and drilling performance of the bit.

This is a kind of cantilever moving bracket of petroleum artesian well platform belonging to petroleum artesian well platform equipment field. This kind of ancon moving bracket of petroleum artesian well platform adopts the square framework structure comprising of four bracket pedestals, two bracket longerons and two crossbeams. The lower part of the four corners of the bracket of the square framework equips sliding trough making the moving bracket have transverse movement on the slideway under bracket, and the upper of which equips the sliding trough making ancon and bracket have lengthways movement together on the slideway. The boring tower is fixed at the rump of ancon. Inside the moving bracket there equips driving device having transverse and lengthways movement, making that moving bracket can conveniently make boring tower exactly locate in the position need artesian. Besides its structure is simple, and its work is dependable. Especially it improves the carrying situation of ancon, enhances the hole-making capability of artesian platform, increases artesian depth, and makes the hole-making efficiency and economy performance ulteriorly improved.

Provided is an axial ultrasonic vibration drilling device fixed by a lathe carriage. The axial ultrasonic vibration drilling device fixed by the lathe carriage comprises a drill, an amplitude-change pole, a transducer, a beam hanging type fixed device and an ultrasonic generator electrically connected to the transducer. The beam hanging type fixed device comprises a hanging beam fixed on the lathe carriage and a front pressing plate and a rear pressing plate, wherein the front pressing plate and the rear pressing plate are fixedly connected to the hanging beam, the front pressing plate fixes the front end of the amplitude-change pole, the rear pressing plate fixes the transducer, a fixed pressing plate fixes the middle part of the amplitude-change pole, and the front pressing plate, the rear pressing plate and the fixed pressing plate are all divided into upper and lower two parts and are assembled through bolts. Compared with a drilling device achieved on a drilling machine, there is no need to conduct any special refit on a machine tool; in addition, a method of workpiece revolution is adopted, there is no need to use assembly units such as a ring manifold or a carbon brush, thus the structure is simplified, the cost is saved, and the axial ultrasonic vibration drilling device fixed by the lathe carriage is convenient to disassemble and assemble and is beneficial to a proceeding of ultrasonic vibration drilling.

A rotary drill bit having blades with gage pads disposed on exterior portions thereof to improve steerability of the rotary drill bit during formation of a directional wellbore without sacrifice of lateral stability. One or more of the gage pads may include radially tapered exterior portions and / or cut out portions to assist with reducing wear of the associated gage pad. For some applications, a rotary drill bit may be formed having blades with gage pads having a relatively uniform exterior surface. Hard facing material and / or buttons may be disposed on exterior portions of the gage pad to form a radially tapered portion to improve steerability, reduce wear of the gage pad and / or improve ability of the rotary drill to form a wellbore having a generally uniform inside diameter, particularly during directional drilling of the wellbore.