1887results about "Borehole drives" patented technology

A bottom hole assembly can include a cable head configured to connect the bottom hole assembly to a cable in a coiled tubing, an electrical orienter to rotate multiple sensor packages downhole, and multiple conductors extending between the cable head and the sensor packages via the electrical orienter. A method can include connecting a bottom hole assembly to a coiled tubing, the bottom hole assembly comprising an electrical orienter, a sensor package including ranging equipment, a fluid motor and a drill bit, deploying the coiled tubing and the bottom hole assembly into the well, activating the electrical orienter to rotate the ranging equipment, and then drilling an offset wellbore toward a target wellbore located using the ranging equipment. An electrical orienter can include an electric motor, a flow path extending completely longitudinally through the electrical orienter, and multiple conductors extending completely longitudinally through the electrical orienter.

This invention relates a drill head (4) for use with a microtunneling apparatus (1) having a cutter bar (12) that is rotatable to produce swarf in a working zone. The drill head (4) includes a movable imaging device (46) that is adapted to capture images in the working zone (13). The imaging device (46) is adapted to move from a position within an annular shell (11) to a position external from the annular shell (11).

A friction reduction tool configured for selective activation downhole in response to a variation in a media flow's operating condition. A valve assembly and an activation assembly are both positioned downstream of a power assembly, which is configured to rotate a rotating valve segment of the valve assembly with media flow through the tool. The activation assembly is configured to transition from a first position to a second position with the media flow operating condition variation. In the first position, the activation assembly provides a bypass flow path around the valve assembly for at least a portion of the media flow, thereby preventing the valve assembly from generating any significant pressure pulse with rotation of the rotating valve segment. In the second position, the bypass flow path is closed such that all or a majority of the media flows through the valve assembly, thereby generating a significant pressure pulse.

A system for performing a mechanical operation on a wireline is described including: a motor; a gear train coupled to the motor, the gear train including a first and a second rotational output, the first and second rotational outputs having different rotational speeds relative to each other; a fluid pump coupled to both the first and second rotational outputs, the fluid pump including: a pump housing coupled to the first rotational output, and a pump input coupled to the second rotational output; and a milling bailer coupled to the housing of the fluid pump and configured to rotate with the fluid pump housing, the milling bailer including: a bailer portion shaped to intake fluid and allow the fluid to flow through a filter and the fluid pump; and a milling face including a bit and configured to perform a milling operation while fluid is flowing through the bailer portion.

The invention discloses a continuous deflecting coring method for realizing wire-line coring orientation, which relates to the technical field of drilling, and specifically comprises the following steps of: selecting a bent screw drill and a matched wire-line coring tool according to geological conditions and a designed drilling track, assembling and connecting the bent screw drill and the matched wire-line coring tool, and putting the bent screw drill and the matched wire-line coring tool into a drilling hole; in the drilling process, the hole bottom power drilling tool provides drilling power, a bent angle of the bent screw drilling tool enables a drilled hole to be inclined according to the design direction, and a rotor cavity of the hollow screw drilling tool allows an internal assembly and a core barrel to pass through. According to the continuous deflecting coring method for wire-line coring orientation, the high-precision directional drilling technology and the wire-line coring technology are organically combined, the problem of exploration of irregular deposited ore deposits and concealed ore deposits is solved, the precision and efficiency of geological exploration are improved, and by adopting the bent screw drill and the matched wire-line coring tool, the geological exploration efficiency is improved. Continuous directional drilling and continuous wire-line coring are carried out at the same time, the number of times of drill lifting is reduced, and the auxiliary time is shortened.

A milling bit valve is disclosed for improved debris collection within a wellbore. The check valve can be part of a debris removal tool that includes a motor, pump, gearbox, bailer, milling bit, check valve, and rotational shafts. In an example, on its uphole end, the milling bit can be coupled with the check valve. On its downhole end, the milling bit can be configured for debris removal with cutting edges. The downhole end can also include openings that provide access to an internal cavity of the milling bit. The internal cavity can extend the entire length of the milling bit. This allows the pump to pull drilling fluid into the bailers through the milling bit and check valve. As a result, the debris removal tool can simultaneously remove obstructions in a wellbore and collect debris from the obstruction removal.

Shown and described herein is a choke assembly for use with a downhole drill string. The choke assembly may include a rotating choke carrier, a stationary seat disposed on the rotating choke carrier and a rotating choke positioned adjacent to the stationary seat to create a seal surface. The choke assembly may further comprise a biasing mechanism applying a biasing force to press the rotating choke against the stationary seat and a flow port within the stationary seat which controls drilling fluid to allow some drilling fluid to become a bypass fluid and pass through the stationary seat.

A system can include a tubular string with a drilling bottom hole assembly connected at a distal end of a coiled tubing including a communication line permitting communication between surface instrumentation and the drilling bottom hole assembly, and the drilling bottom hole assembly including an orienter and ranging equipment. The tubular string is positioned in an intercept wellbore which intersects a target wellbore downhole of an obstruction that prevents access to the target wellbore downhole of the obstruction. A method can include drilling an intercept wellbore outward from an original wellbore, after an obstruction is introduced between the original wellbore and a target wellbore, and intersecting the target wellbore with the intercept wellbore, so that fluid communication is provided between the intercept and target wellbores.

A system and method for stall recovery of mud motors may be implemented in a steering control system. The stall recovery system and method may involve automatic detection of a stall of a mud motor during drilling controlled by the steering control system, and may respond to the stall in a rapid and controlled manner to avoid or minimize damage to the mud motor, such as by immediately reducing mud pressure and stopping rotary drilling, if used, faster than a typical human operator could perform. The stall recovery system and method may further take actions to automatically restart drilling.

The invention discloses a directional deflecting wire-line coring drilling device and a directional deflecting wire-line coring drilling method, relates to the field of drilling of soil layers or rocks, and solves the problems that an existing drilling device is high in deflecting direction control difficulty and small in deflecting amplitude. According to the technical scheme, the directional deflecting wire-line coring drilling device comprises a deflecting short section, a top short section and a bottom short section, the top short section and the bottom short section are arranged at the upper end and the lower end of the deflecting short section, a drill rod connector is arranged at the upper end of the top short section, and the lower end of the bottom short section is connected with a hollow motor. A cylindrical coring cavity is formed in the top short section, the deflecting short section, the bottom short section, the hollow motor and the drill bit; the top short section and the deflecting short section, every two adjacent deflecting short sections and the deflecting short section and the bottom short section are connected through deflecting connecting structures, two pull rope holes are formed between the top short section and the upper end face and the lower end face of each deflecting short section, pull ropes penetrate through the pull rope holes, and the postures of the deflecting connecting structures can be adjusted through the pull ropes. And linear drilling and directional drilling are realized.

A method of increasing production from at least one target wellbore can include drilling at least one offset wellbore having at least one horizontal portion in at least one aquifer, and intersecting the target wellbore with the offset wellbore. A water well system for improved production from at least one target wellbore can include at least one offset wellbore, the offset wellbore including at least one horizontal portion positioned in at least one aquifer, and at least one intersection between the offset wellbore and the target wellbore. Ranging equipment in the target and / or offset wellbore may be used to steer a coiled tubing drilling BHA in the offset wellbore toward the target wellbore.

A system and method for stall recovery of mud motors may be implemented in a steering control system. The stall recovery system and method may involve automatic detection of a stall of a mud motor during drilling controlled by the steering control system, and may respond to the stall in a rapid and controlled manner to avoid or minimize damage to the mud motor, such as by immediately reducing mud pressure and stopping rotary drilling, if used, faster than a typical human operator could perform. The stall recovery system and method may further take actions to automatically restart drilling.

A traction tool is operable with fluid flow from coiled tubing for use in a wellbore. The traction tool includes a mandrel, a driver, at least one piston, and a motor. The driver is rotatably disposed on the mandrel and can be movable between retracted and extended conditions when the at least one piston is actuated. The driver in the extended condition is configured to engage inside the wellbore. The piston is adjacent to the driver and is actuated by the fluid flow from the mandrel. The motor is also actuated by the fluid flow from the mandrel. The motor imparts rotation to the piston and the drive, which can be supported by bearings on the tool's mandrel. Tracks on the driver arranged at an angle transverse to a longitudinal axis of the tool allow the rotating driver to spiral inside the wellbore and advance the traction tool.

Apparatus and methods relate to a gear reducer, which may be used downhole to reduce rotational speed output from a downhole motor, such as a turbine motor, to a slower speed desired for rotation of a drill bit. The gear reducer includes a planetary gear arrangement coupled to receive rotational input from the downhole motor and a cycloidal gear arrangement driven by rotation resulting from the planetary gear arrangement. An output shaft couples to the cycloidal gear arrangement and rotates during operation slower than the rotational input from the downhole motor.

The invention provides a construction method for a gravel pile of a thick embankment layer, which comprises the following steps of: in a field after backfilling and flattening gravel materials, starting a down-the-hole hammer to lead a whole riprap layer above a hole in a construction area, lifting a drill bit after a steel casing follows up to the bottom of the riprap layer, and backfilling and pulling out a sleeve to complete the hole lead; pile forming construction of the gravel pile is completed through material supplementing; and after the pile machine moves, a cushion layer is laid on the gravel pile, and the compactness effect of the gravel pile is detected through a dynamic penetration method. The down-the-hole hammer and the steel pile casing are combined, so that the interior of the hole is kept stable, the time of repeated drilling of the down-the-hole hammer and auxiliary sinking of the pile casing by a vibratory hammer is saved, the hole forming construction progress is accelerated, and the down-the-hole hammer pile casing follow-up construction method can achieve the efficiency of forming a pile and leading 5-9 holes in one day.

The present invention discloses a support mechanism of a self-adaptive traction robot for a complex wellbore and a control method thereof, and relates to the technical field of oil and gas field development. Each support link assembly in a support mechanism is controlled by an independent hydraulic cylinder and hydraulic valve. When a well wall that each support link assembly contacts in a circumferential direction is irregular, the support mechanism contact effect is not ideal, which leads to a decrease in traction force. In this case, a displacement sensor in a telescopic mechanism detects that a displacement of a traction cylinder piston is small, which is fed back to a ground control system, and then a fluid inflow size of support cylinders corresponding to different support link assemblies is adjusted until the displacement sensor in the telescopic mechanism detects an effective traction distance.

The invention provides a reverse-circulation large-diameter binding type down-hole hammer reamer bit and a slag discharging method. The reverse-circulation large-diameter binding type down-hole hammer reamer bit specifically comprises a drill bit shroud, an air distribution chamber, a central pipe combination, a down-hole sub hammer and a slag suction opening, wherein the slag suction opening is formed in the bottom of a central pipe and used for sucking crushed rock slag into a drill rod through negative pressure so as to discharge the rock slag. For bedrock large-diameter water-containing stratum reaming drilling, the unique slag suction opening is formed in the bottom of the center pipe, tail gas of the down-the-hole hammer forms entrainment airflow to push liquid in a drill hole to return to the ground surface from the slag suction opening, and the stable continuous reverse circulation slag discharging effect is achieved by means of gas lift water level rising of tail gas pressure of the down-the-hole hammer; and the drilling efficiency of the large-diameter binding type down-the-hole hammer is improved, and the stable and continuous deslagging effect is extremely good in construction application.

Described is an apparatus for use in a borehole (107), the apparatus comprising a downhole anchor (113) having a gripping element (211) for engaging the borehole to control relative movement and load transfer between the anchor (113) and the borehole and a connector (115) for connecting the apparatus (107) to a continuous work string (102) terminating proximally of the anchor (113), wherein the connector is (115) configured to facilitate transfer of signals between the anchor (113) and the surface of the wellbore.

The invention provides a rotary impact type ultrasonic sampling device for deep rocks, which relates to the technical field of drilling and coring and comprises an anchoring unit, a feeding unit, a rotary unit, an impact unit and a coring unit which are sequentially connected from top to bottom. The device has the beneficial effects that the sampling device is firstly placed in a rock hole, and each anchoring tooth is fixed in the rock hole; then an ultrasonic transducer of the impacting unit and a motor of the rotating unit drive a drilling barrel to rotationally impact the rock, an electromagnet of the feeding unit drives a hydraulic cylinder to push the drilling barrel to drill downwards, the rock core enters the drilling barrel, and after the rock core in the drilling barrel reaches the needed length, the rock core pushes a push plate to move upwards to drive the lower end of a limiting rod to release a sliding block; the sliding block drives the core cutting rope to contract inwards to be in attached contact with a rock core, the core cutting rope cuts off the lower end of the rock core along with rotation of the drilling barrel, and therefore automatic drilling and coring can be achieved, coring operation is completed, the integrity of a rock core sample is guaranteed, and the core cutting device is particularly suitable for coring of deep hard rock.

The invention provides a tool applied to the field of petroleum drilling, and particularly relates to an underground non-circular gear intelligent impact tool which comprises a power module, an axial impact module and a circumferential impact module, the power module enables drilling fluid to impact a turbine in a directional mode through a drainage disc, hydraulic energy is converted into mechanical energy, and the mechanical energy is transmitted to the axial impact module. The power is transmitted to the axial impact module and the circumferential impact module, the axial impact module lifts a rack punch hammer to compress a spring through meshing of an incomplete gear and the rack punch hammer, and when the incomplete gear is disengaged from the rack punch hammer, the spring releases energy to generate axial impact downwards. The circumferential impact module is composed of two groups of incomplete gears and racks which are arranged in an up-down 90-degree staggered mode, the rack punch hammer compresses a spring through meshing of the incomplete gears and the rack punch hammer, and the spring is released to generate circumferential impact when the incomplete gears and the rack punch hammer are disengaged. Periodic impact can be achieved, the mechanical rock breaking efficiency is effectively improved, and the stick-slip phenomenon at the drill bit is reduced.

A method for supplying, via an electrical interface, an output electrical power to an electrical load that is downhole in a borehole formed in a subsurface formation, includes generating mechanical energy from a flow of a fluid being delivered into the borehole; converting the mechanical energy into an input electrical power; storing the input electrical power into a primary capacitor, wherein the input electrical power has a variance that is greater than a variance threshold. The method includes performing the following operations while continuing to generate the mechanical energy generated from the flow of the fluid, in response to determining that at least one load criteria is satisfied, discharging the input electrical power from the primary capacitor to the electrical load to power a downhole operation by the electrical load.

The invention provides a hydraulic control and hydraulic drive coiled tubing tractor. The problems that an existing tractor is complex in structure and low in control stability are solved. The first piston cylinder, the second piston cylinder and the third piston cylinder are sequentially arranged on the center pipe in the length direction of the center pipe. Connecting rod supporting mechanisms are arranged at the ends, away from the second piston cylinder, of the first piston cylinder and the third piston cylinder, and the first piston cylinder and the third piston cylinder are used for controlling the two connecting rod supporting mechanisms to be folded and unfolded alternately; the first piston cylinder and the second piston cylinder are installed on the center pipe, the third piston cylinder is installed on a piston rod of the second piston cylinder, a hydraulic control driving assembly used for controlling the first piston cylinder, the second piston cylinder and the third piston cylinder to move is installed on the outer wall of the center pipe, and a drilling fluid inlet is formed in the side wall of the center pipe and communicated with the liquid inlet end of the hydraulic control driving assembly. The single telescopic hydraulic cylinder is adopted, the traction period is shortened, the traction speed is increased, meanwhile, only the pressure of drilling fluid needs to be controlled in the traction process of the tractor, and the system operation stability is high.

A friction reduction tool configured for selective activation downhole in response to a variation in a media flow's operating condition. A valve assembly and an activation assembly are both positioned downstream of a power assembly, which is configured to rotate a rotating valve segment of the valve assembly with media flow through the tool. The activation assembly is configured to transition from a first position to a second position with the media flow operating condition variation. In the first position, the activation assembly provides a bypass flow path around the valve assembly for at least a portion of the media flow, thereby preventing the valve assembly from generating any significant pressure pulse with rotation of the rotating valve segment. In the second position, the bypass flow path is closed such that all or a majority of the media flows through the valve assembly, thereby generating a significant pressure pulse.

An apparatus for damping vibrations includes an inertial mass disposed in a cavity in a rotatable downhole component, the rotatable component configured to be disposed in a borehole in a subsurface formation, such as a resource bearing formation, the inertial mass coupled to a surface of the cavity by a damping fluid and configured to move within the cavity relative to the downhole component. The apparatus also includes a damping fluid disposed in the cavity between the inertial mass and an inner surface of the cavity, where rotational acceleration of the rotatable downhole component causes shear in the damping fluid to dissipate energy from rotational acceleration of the rotatable downhole component and causing the rotational acceleration to be reduced.

According to the air-blast type internal deslagging down-the-hole hammer rock-entering drilling machine construction equipment and the construction method thereof, a down-the-hole hammer head and a deslagging channel are arranged at the bottom of a designed high-pressure air-blast cavity, an air compressor outputs high-pressure air into the high-pressure air-blast cavity through an oil-gas distributor and transmits the high-pressure air to a plurality of down-the-hole sub-hammer heads to work, and the released high-pressure air is discharged; and rock debris and impurities in the pile hole are carried to enter the inner cavity of the inner drill rod from the slag discharging channel and finally discharged to a designated area through the slag discharging pipe.

The present invention relates to a downhole wireline tool for performing an operation on a rotatable component part mounted as part of a well tubular metal structure in a well, the downhole wireline tool having an axial extension and a front face facing away from a top of the well, and the downhole wireline tool comprising a wireline connection unit for connection to a wireline, an electric motor powered by the wireline for rotating a rotatable shaft, and a gearing system driven by the electric motor, the gearing system comprising a first gearing part connected with the rotatable shaft and configured to rotate in a first direction, wherein the gearing system further comprises an intermediate gearing part rotated by the first gearing part and a second gearing part rotated by the intermediate gearing part to rotate in a second direction opposite the first direction. The invention also relates to a downhole system comprising the downhole wireline tool and a driving unit, such as a downhole tractor, for propelling the downhole system forward in the well.

The invention belongs to the field of drilling, and particularly relates to a large-diameter cluster type pneumatic down-the-hole hammer raise-boring reamer bit and a drilling method.The bit comprises a center pipe, a cluster body, an air chamber, a down-the-hole hammer, a synchronous check valve, an air chamber pressure balance control assembly and a concave slag falling channel and is used for transmitting torque and rotating speed and conveying high-pressure air; the top of the central pipe is sleeved with a flange used for being connected with a drill rod, the central pipe is sequentially sleeved with a front guide wing plate, an upper fixing plate, a middle plate, a high-frequency rear seat, an air chamber peripheral cylinder and an air chamber lower cover plate in the extending direction of the central pipe, and the front guide wing plate, the upper fixing plate, the middle plate, the high-frequency rear seat, the air chamber lower cover plate and the central pipe jointly form a cluster body; two ends of the air chamber peripheral cylinder are respectively connected with the high-frequency rear seat and the air chamber lower cover plate to form an air chamber; according to the drill bit, the multiple down-the-hole hammers are integrated through the cluster body, efficient rock breaking and continuous slag discharging are achieved in combination with air chamber energy gathering, synchronous check valve control and a concave slag falling channel, and the drilling efficiency is improved by more than 10 times.

A downhole mud motor includes a driveshaft rotatably disposed in a driveshaft housing, a bearing mandrel coupled to the driveshaft, wherein the bend adjustment assembly includes a first configuration that provides a first deflection angle between the driveshaft housing and the bearing mandrel, wherein the bend adjustment assembly includes a second configuration that provides a second deflection angle between the driveshaft housing and the bearing mandrel, and a locking assembly including a locked configuration configured to lock the bend adjustment assembly into one of the first configuration and the second configuration until the downhole mud motor has at least one of reached a predefined depth in the wellbore, and a mud weight has reached a predefined mud weight threshold at a given depth, in response to which the locking assembly is configured to actuate from the locked configuration to an unlocked configuration.

The invention relates to the technical field of petroleum drill bits, in particular to a petroleum drilling drill bit device, and aims to solve the technical problems that an existing drill bit cannot give consideration to application range, maintenance cost, tunneling speed and the like. The petroleum drilling drill bit device comprises a drill bit telescopic assembly, a pdc drill bit and a roller bit. The drill bit telescopic assembly comprises a fixed base, a first circular ring, a movable base, a telescopic mechanism and a connecting rod mechanism. The pdc drill bit is arranged on the moving base in a penetrating mode. The roller bits can stretch out and draw back along the axes of the roller bits, and the multiple roller bits are arranged on the moving base around the axis of the pdc drill bit at intervals. Through cooperation of the telescopic mechanism and the connecting rod mechanism, switching tunneling of the two petroleum drilling bits can be achieved, and the petroleum drilling bit device can be suitable for more terrains.