42 results about "Draw-works" patented technology

Cable guides for overhead support of drill line on a drilling rig during a slip and cut operation feature replaceable liners of wear material supported by a re-usable base. A tensioning roller added to the draw-works resides outward from the periphery of the draw-works drum and is spring-biased toward same into order to force the incoming drill line against the periphery of the drum.

A modular tree production tree assembly reduces the weight during transfer of the tree components from a barge to a production rig. The tree assembly includes an upper tree module, a lower tree module, and a choke bridge module. The upper tree module has a tree head, the lower tree module has a guidance system and ties in the flow lines to the in-field infrastructure, and the choke bridge module has the choke and instrumentation bridge to link the three components together. Prior to delivery to the rig, the components of the modular tree assembly may be joined together and tested on shore. Upon arrival at the rig, the components are individually lifted from the barge onto the rig by a crane. After the tree components are on the rig, the modular tree is reassembled and then deployed to the sea floor via the draw works.

Utilizing vision systems at a wellsite, which may include operating a video camera to generate a video signal comprising images of one or more pieces of equipment or components and receiving the video signal by a processing system, which may then process the images to determine physical and/or operational characteristics associated with the one or more pieces of equipment in the images. The video signal may contain images of a crown block and/or a drawworks of a hoisting system at an oil and gas drill rig. The processing system may then process the video signal to determine when a traveling block of the hoisting system is within a threshold distance from the crown block.

Disclosed is a draw-works and a method of operation. The draw-works includes a first drum configured to store and reel in an elongated hoisting member, such as a hoisting cable, a second drum configured to store and reel in the elongated hoisting member, and a rotation device configured to rotate the first and second drums, wherein at least one of the drums is selectively connectable to and disconnectable from the rotation device.

Well drilling apparatus (2) and method associated therewith, which is able to shift from a first assembly operating configuration to a second use operating configuration and vice versa. Said apparatus (2) comprises a sub-structure (21), which supports said apparatus (2), a mast (23), which is pivoted to said sub-structure (21), around which it rotates so as to shift from said assembly operating configuration, which is substantially horizontal, to said use operating configuration and vice versa; a drill floor (22), which is able to be lifted and is connected to the mast (23); an actuating device (3), which is adapted to allow the drilling apparatus (2) to shift between said two operating configurations. The actuating device (3) is a hydraulic device, which is directly connected to the mast (23). The drill floor (22) comprises a first portion (22a), projects with respect to said mast (23), and a second portion (22b), which is constrained to said mast (23) and rotates with it. A draw-works (58) is installed, in a permanent manner, on the sub-structure (21).

The invention discloses a double-main-wellhead drilling system of a semi-submersible drilling platform. The double-main-wellhead drilling system is arranged at the center, corresponding to two wellheads, of a main deck of a ship body of the semi-submersible drilling platform; the double-main-wellhead drilling system comprises a moon pool which is arranged at the middle part of the main deck; the larboard of the moon pool is provided with a Christmas tree treatment system; the starboard of the moon pool is provided with a blowout preventer treatment system; a drilling platform is arranged abovethe moon pool; the drilling platform is correspondingly provided with an instrument/driller's station, a winch pry unit and a duplex derrick; the position of the duplex derrick corresponds to the twowellheads; the top of the duplex well rack is provided with an overhead crane; the double-main-wellhead drilling system further comprises a pipe column stock dump, a water isolating pipe treatment system and a pipe column conveying system, wherein the pipe column stock dump, the water isolating pipe treatment system and the pipe column conveying system are arranged on the main deck; and the Christmas tree treatment system, the blowout preventor treatment system, the water isolating treatment system and the pipe column conveying system are correspondingly distributed in left, right, front andrear directions of the drilling platform. The double-main-wellhead drilling system disclosed by the invention improves the efficiency of drilling operation and improves the safety of an operator.

Systems and methods for using high rate telemetry to improve drilling operations. A method may include performing drilling operations with a wired drill pipe (WDP) string in an oil and/or gas well. The drilling operations may include pumping drilling fluid to a mud motor of the WDP string through an internal passage of the WDP string and vertically moving the WDP string via a drawworks while controlling the drawworks to change speed of the WDP string based on downhole data received by wellsite surface equipment via electrical conductors integral to WDP of the WDP string. The received downhole data may include downhole pressure data that is generated downhole by a pressure sensor and is indicative of pressure of the drilling fluid in the internal passage.

The invention belongs to the technical field of high-temperature salt well directional well butt joint, and particularly relates to a high-temperature salt well directional well butt joint navigationconveying system and an application method. The high-temperature salt well directional well butt joint navigation conveying system comprises a directional well, a drilling machine, a drill stem column, a non-magnetic drill collar, a navigation conveying device, a high-temperature salt well dissolving cavity, a magnetic guiding butt-joint instrument, a cable and a winch, wherein the drilling machine is installed at a well mouth of the directional well, the drill stem column is arranged in the directional well, the upper end of the drill stem column is connected with the drilling machine, the non-magnetic drill collar at the lower end of the drill stem column is connected with the navigation conveying device; and the navigation conveying device is placed in the center of the high-temperaturesalt well dissolving cavity. The invention provides the high-temperature salt well directional well butt joint navigation conveying system and the application method in order to enable the magnetic guiding butt-joint instrument to be safely lowered into and pulled out of the high-temperature salt well dissolving cavity to improve the construction safety and stability and enable the butt-joint instrument to be located in the center of the high-temperature salt well dissolving cavity to ensure the accuracy of butt-joint signal receiving.

The invention discloses a power generation type offshore drilling platform heave compensation device which is characterized in that a spring, a pressing plate and a floating crown block are arranged in a drilling derrick, one end of the spring is connected to the top of a guide groove, the other end of the spring is connected to the pressing plate, the floating crown block is installed below the pressing plate, and a center sheave with a plurality of wire grooves formed in the cylindrical surface is installed in the floating crown block; the heave compensation device mainly comprises four parts, namely a compensation mechanism part, a drilling winch part, a winding device part and a power generation device part. The compensation mechanism part is mainly used for compensating the displacement of the marine riser caused by heaving of sea surface waves, and the winding devices comprise the winding device I, the winding device II, the winding device III and the winding device IV which are arranged at the left position, the right position, the front position and the rear position around the vertical axis of the marine riser respectively. The device is simple in structure, easy in manufacturing of required parts, high in compensation efficiency, capable of generating power, capable of adjusting the lowering angle of the marine riser, capable of guaranteeing vertical lowering and high in reliability.

The invention discloses a drilled pile drilling device suitable for determining boundary depth of an upper-soil low-rock stratum. The drilled pile drilling device comprises a drill stem, a drill bit,a positioning retainer ring, a soil taking sleeve, a drive rotary disc, a lower supporting platform, a driven rotary disc and a drill stem blocking head, wherein the drill stem blocking head is connected to a guide rod and extends into a hydraulic sleeve; a lifting rope on the top of the hydraulic sleeve is connected to a winch roller and an angle displacement sensor; an ultrasonic speed measureris arranged in a shielding cover; a torque sensor abuts against the drive rotary disc through a jacking screw; and the angle displacement sensor, the ultrasonic speed measurer and the torque sensor output a square wave signal through pre-amplification, band-pass filtering, a RC reshaping circuit and digital-to-analogue conversion, wherein an output signal of the ultrasonic speed measurer is connected to a buzzer and a signal lamp through a relay. Information such as rotation speed, torque and drilling depth of the drill stem during drilled pile drilling are acquired, processed and analyzed, and soil-rock boundary depth is quickly determined through an intermittent alarm signal, so that guide and basis are provided for determining stratum distribution information for enclosure pile construction of deep foundation engineering of the upper-soil low-rock stratum.

The invention provides a device and a method for detecting underground accidents in the geological drilling process. The device is mainly composed of an underground instrument, a depth measuring unit, a high-performance computing workstation and detection software. Firstly, the small-size cable-free underground instrument is adopted for measuring the distance between an ultrasonic transducer and a fish fracture surface, the well wall diameter, the fracture surface and an ultrasonic image of the well wall, and meanwhile a pressure balance device is designed to improve the pressure resistance degree of the ultrasonic transducer in consideration of direct contact between the ultrasonic transducer and mud during work. Secondly, the depth measuring unit is additionally arranged in ground rope coring equipment to detect the depth of a fish to the ground, and in addition, a high-precision fitting algorithm is adopted for correcting depth measurement data in consideration of the tension influence of a winch steel wire rope. Finally, the high-performance computing workstation and the detection software are used for calculating the shape of the fracture surface of an underground drilling tool, the well wall diameter, the depth of the underground fractured drilling tool to the ground and three-dimensional ultrasonic images of the fracture surface and the well wall.

The invention relates to the field of piling equipment, in particular to a piling machine. The piling machine comprises a base and a base board arranged on the base; a rotary shaft is arranged in thecenter of the base; the base board is rotationally connected with the base through the rotary shaft; one end of the base board is provided with a drilling frame; two power heads are arranged at the upper end of the drilling frame; a drill stem below each power head is provided with a corresponding slide rail; two winches are arranged at the position, at the other end opposite to the drilling frame, of the base board; and the centers of the two drill stems installed on the two power heads are separately located on the same circumference with the center of the rotary shaft as the circle center.According to the piling machine, the two power heads are arranged on the drilling frame, at the same time, through the reasonable position design of the power heads, the effect that only the base board needs to rotate on the rotary shaft by a certain angle in the switching process of soil sampling and piling is achieved, the soil sampling and piling positioning precision can be greatly improved, simpleness and convenience are achieved, and efficiency is improved.

The invention aims at the field of geological drilling engineering, and discloses a drilling process bit pressure modeling method considering an uncertain damping coefficient, which comprises the following steps of: firstly, modeling a drilling machine lifting system, a drill column system and a drill bit-rock action mechanism, constructing a drill column longitudinal motion equation, and obtaining a state space model depending on the uncertain damping coefficient; and solving model parameters by using on-site drilling tool parameters and historical data, and finally setting an uncertain feeding damping coefficient. The characteristic that an actual drill string system is composed of discrete units is considered, and a high-degree-of-freedom model with the degree of freedom equivalent to the number of actual drilling tools is invented based on a finite element method. The introduced damping model can reflect the drill-rock action in the current environment by setting a damping coefficient, so that a drilling process bit pressure dynamic model suitable for different environments is established. On-site data shows that the model can better fit the dynamic response from the winch rotating speed input to the above-well bit pressure output.