924results about "Cleaning apparatus" patented technology

Systems and a tool are disclosed herein for improved debris collection within a wellbore. An example debris collection tool can include a motor rotationally coupled to a pump by a first flexible shaft, the pump rotationally coupled to a gearbox by a second flexible shaft, and the gear box rotationally coupled to a milling bit by an additional shaft. The flexible shafts can be made of a flexible, but durable material that can absorb strain created by a pump whose rotor rotates eccentrically with the axis of rotation offset from the axis of symmetry. The flexible shafts can be made of a durable and flexible material that can withstand the strain created by the eccentric rotation.

The invention relates to the technical field of oil production engineering, in particular to a fracturing and plugging method for a chemical flooding injection low-efficiency well of a middle-shallow sandstone thin and poor oil layer. The method comprises the steps that a target fractured well is determined, historical fracturing data and dynamic profile test data of the target fractured well are collected, and a fracturing plugging target layer is determined; according to historical fracturing data analysis and an ASP flooding core blockage rule experiment, the fracture radius of a target layer, the ASP flooding reservoir blockage radius, the reservoir physical property and fracturing scheme of the target layer, the lower limit of the quality-divided injection permeability of the target layer and the damage degree caused by fracturing residues of the target layer are obtained; the method comprises the following steps: sequentially acquiring the dosage of a blocking remover for chemical blocking removal of a target layer, slug combination parameters, fracture parameters of a fractured position, a post-fracturing quality-divided injection process and post-fracturing injection mode combination, performing fracturing blocking removal on the target layer according to the acquired data, and collecting fracturing blocking removal effect data in real time. According to the method, the operation efficiency is improved, and meanwhile the construction cost is reduced.

The invention relates to the technical field of oil exploitation equipment, and discloses an underground filling tool for oil exploitation, which comprises a sealing element for sealing a section to be filled, an activating element for activating the sealing element is arranged on the sealing element, and a removing element for removing residual materials on the well wall is arranged at the bottom end of the sealing element; through the gravity driving design of the counterweight ring of the activating piece, expansion activation of the sealing gasket can be achieved without an additional hydraulic or electric device, the underground structure is simplified, the fault probability in the high-temperature and high-pressure environment is reduced, the four sets of evenly-distributed top plates are matched with the downward moving groove, the guiding effect of the limiting block and the limiting groove is combined, and the sealing gasket is more stable. The balance weight ring is ensured to be balanced in stress when rotating and aligning, deflection and jamming are avoided, the synchronous plate and the lower pressing plate are symmetrically distributed to ensure that the sealing gasket is uniformly stressed, the synchronous plate and the lower pressing plate are synchronously expanded and attached to the well wall, the stability and efficiency of sealing activation are improved, and manual operation errors are reduced.

Systems and methods are disclosed herein for simultaneously milling an obstructions and collecting the resulting debris within a wellbore in an oil-and-gas setting. An example debris collection tool can include a motor, centrifugal pump, gear boxes, bailers, and a pass-through milling bit. A series of shafts can pass through the internal components of the tool and cause various components to rotate when driven by the motor. The gear boxes can lower the speed and increase the torque of rotating downhole components. The tool therefore can simultaneously drive the pump and milling bit at different speeds and torques. The centrifugal pump can include a flow control mechanism at allows the tool to control the flow of drilling fluid from the centrifugal pump into the surrounding subsurface.

The invention provides a monitoring well washing quality monitoring device and a monitoring well washing device, and belongs to the technical field of monitoring well washing quality monitoring. The well washing quality monitoring device for the monitoring well comprises a detection module and a detection host, wherein the detection module comprises a hoop, a detection box, an image sensor, a sealing door and a perspective window; the detection box is arranged on the outer circumferential surface of the hoop; the image sensor is mounted in the detection box; the sealing door is arranged on the detection box; the perspective window is arranged at a position corresponding to the image sensor; the image sensor is in communication connection with the detection host. The monitoring well washing device comprises a moving trolley, a first connecting pipe, a second connecting pipe, a cleaning piece, a gas conveying mechanism, a water suction mechanism, a driving assembly and the quality monitoring device. Real-time monitoring of the well washing process of the monitoring well is achieved, and the well washing quality can reach the standard at a time.

The present application relates to the gas lift type mechanical device for liquid pumping and discharging, which is especially suitable for oil exploitation, natural gas well liquid discharging and gas pumping, and underground water exploitation in industrial and agricultural production and life. The chamber gas liquid pumping and discharging device is composed of a unique U-shaped valve (10), a gas mixing valve (14) and a chamber (12), and a plurality of open chamber sections are formed on the production pipe, so that the upward fluid is divided into a plurality of gas pushing liquid and liquid pushing gas sections, thereby reducing the flow pressure and facilitating the production. The gas mixing valve (14) has the function of automatically adjusting the density of the fluid, so that the gas injection amount and the liquid pumping amount are always optimal, the gas consumption is only 15-20% of the conventional gas lift method, and the device meets the needs of low energy oil well production or natural gas well liquid discharging and gas pumping. The yield of the production well can be controlled by adjusting the gas injection time or the gas injection amount of the ground equipment. The device has the advantages of simple structure, reliable work, long service life, low energy consumption and wide application range.

The invention provides a coal mine wireless measuring device integrating track video and gamma measurement, and relates to the technical field of coal mine drilling measurement, the device comprises a supporting assembly, the supporting assembly comprises a supporting base body, the first connecting end of the supporting base body is used for being connected with the end of a drill rod, and a containing space is formed between the second connecting end and a supporting shell; a measuring assembly is arranged on the supporting base body; the cleaning assembly comprises a first adjusting unit, a second adjusting unit and a plurality of cleaning plates; the first adjusting unit comprises a cleaning sleeve rotationally connected between the supporting base body and the supporting shell and a first driving structure installed on the supporting base body. The cleaning rod is sleeved with a mounting sleeve and connected with the cleaning sleeve through a second elastic telescopic rod. A driving shaft of the first driving structure is in meshed connection with the cleaning sleeve; the second adjusting unit is provided with a pushing part making contact with the side wall of the cleaning rod. The hole wall of the drill hole can be efficiently cleaned from multiple directions, and gravel is prevented from interfering with the measurement precision.

The invention provides a hole cleaning device for a cast-in-place pile, and relates to the technical field of constructional engineering, the hole cleaning device comprises a hole cleaning equipment body, the bottom end of the hole cleaning equipment body is provided with a hole cleaning mechanism used for cleaning chippings at the bottom of the cast-in-place pile, the hole cleaning mechanism comprises a collecting cylinder, a conveying cylinder, a clamping ring and a collecting plate, and the bottom of the collecting cylinder is provided with a plurality of clamping grooves; the device has the advantages that the horizontal inclination angle of the conveying barrel is 10-30 degrees, so that when the conveying barrel rotates, crushed aggregates in a drilled hole move towards the interior of the collecting barrel along the inclination angle of the conveying barrel, the crushed aggregates in the drilled hole can be collected, and the crushed aggregates in the drilled hole can be collected; the end, located in the collecting barrel, of the conveying barrel makes contact with the top face of the collecting plate, then the crushed aggregates are conveyed to the collecting plate along the moving conveying barrel, the crushed aggregates around the bottom of the drilled hole are conveyed to the collecting plate, and the effect of collecting the crushed aggregates at the bottom of the drilled hole is achieved.

A collecting device for collecting debris within a wellbore, the collecting device comprises a leading portion, a trailing portion, a wall connecting the leading portion to the trailing portion, a collecting chamber on an inside of the wall, an inlet at the leading portion, an outlet at the trailing portion, and an elongated filter, the collecting device forms a device longitudinal central axis, wherein the elongated filter extends along the central axis and forms a first end portion and a second end portion, wherein the first end portion has a first permeability and the second end portion has a second permeability, the second end portion is positioned closest to the inlet, the elongated filter forms a retentate side and permeate side. A downhole toolstring and a method for collecting the debris from the wellbore are also disclosed.

Systems and methods presented herein facilitate coiled tubing operations, and generally relate to generating a depth of solids origin (DSO) guess that represents a depth location of solids in a wellbore traversing a hydrocarbon-bearing formation, using a calibrated flow model (FM) to predict an amount of solids at a surface location of the wellbore based at least in part on the DSO guess, comparing the predicted amount of the solids at the surface location of the wellbore to a measured amount of solids at the surface location of the wellbore, determining that the DSO guess is equal to an actual DSO within the wellbore when the predicted amount of the solids at the surface location of the wellbore matches the measured amount of solids at the surface location of the wellbore, and adjusting one or more operational parameters of a coiled tubing system to reduce an amount of the solids at the DSO within the wellbore.

Some implementations include a method for controlling a computer system configured to detect scaling and / or plugging of an electric submersible pump (ESP) deployed in a wellbore. The method may include determining, based on a measurement of pressure in the wellbore, a required total dynamic head (RTDH) for the ESP while the ESP is operating in the wellbore. The method also may include determining, based on information from one or more sensors in the ESP, a produced total dynamic head (PTDH) for the ESP while the ESP is operating in the wellbore. The method also may include detecting scaling status or plugging status of the ESP based on the RTDH and the PTDH.

A well cleanup and actuation tool including a cleanup portion of the tool configured to direct flowing fluid into an annular space radially outwardly of the tool and in a downhole direction, while accepting return fluid and entrained debris through a pathway therein, an actuation configuration connected to the cleanup portion, the actuation configuration comprising a profile thereon and a flow passage that bypasses the profile. A method for cleaning and actuating in a borehole, including conveying fluid through the tool, cleaning a target area with the fluid, and bypassing the profile of the actuation section of the tool with the fluid. A wellbore system, including a borehole in a subsurface formation, a string in the borehole, and a cleanup and actuation tool disposed within or as a part of the string.

An air motor apparatus for air drilling includes a filter assembly at an uphole end that receives compressed air and diverts a constant pressure portion through a filter to a vane motor and a remaining portion to an air hammer at a downhole end via bypass conduits. The apparatus includes one or more sensors for measuring drilling conditions, the sensors being connected to a communication device capable of transmitting the sensor data to the surface. The sensors and their wiring are shielded from high air speeds by bypass conduits and components of the filter assembly.

The invention provides an annulus injection paraffin control device and a paraffin control method.The annulus injection paraffin control device comprises a paraffin removal and control well completion pipe string arranged in a casing annulus, the paraffin removal and control well completion pipe string is communicated with a ground injection device, a paraffin removal and control agent injection valve is connected to the paraffin removal and control well completion pipe string and comprises a check valve and a counterbalance valve which are oppositely arranged, and the check valve is communicated with the counterbalance valve. An inlet of the paraffin removal and inhibition agent injection valve is formed in one side of the back pressure valve and communicated with the annulus, and an outlet of the paraffin removal and inhibition agent injection valve is formed in one side of the check valve and communicated with the oil pipe. The well completion pipe string with the paraffin removal and inhibition agent injection valve is tripped into an original well, a paraffin removal and inhibition agent injection channel is an annular space between an oil pipe and a casing pipe, the problems that the friction resistance is large, the starting pressure is high and the operation load is high when a capillary pump injects the paraffin removal and inhibition agent are solved, oil pipe perforation is not carried out, the well completion pipe string structure is intact, and the service life of the well completion pipe string is prolonged. Well integrity issues with failure of the first barrier are addressed.

An air motor apparatus for air drilling includes a filter assembly at an uphole end that receives compressed air and diverts a constant pressure portion through a filter to a vane motor and a remaining portion to an air hammer at a downhole end via bypass conduits. The apparatus includes one or more sensors for measuring drilling conditions, the sensors being connected to a communication device capable of transmitting the sensor data to the surface. The sensors and their wiring are shielded from high air speeds by bypass conduits and components of the filter assembly.

A bottom hole assembly (BHA) deployable in a production tubing includes a foam assembly and a swab assembly. The foam assembly includes a check valve unit coupled to a chemical canister. The swab assembly is coupled to the foam assembly. The swab assembly includes a swab mandrel and a plurality of swab cups. A method for initiating natural flow in a well includes conveying a bottom hole assembly (BHA) on a slickline to a first depth into a production tubing, holding the BHA stationary in the static fluid, releasing a foaming chemical from the chemical canister to the production tubing via the check valve unit, activating the foaming chemical to form a foam, opening a well flowline, and swabbing at least a portion of the production tubing with the swabbing assembly of the BHA by at least partially removing the BHA from the production tubing.

The invention relates to the technical field of petroleum engineering well cementation, and discloses a well cementation construction process of a highly-deviated well, which comprises the following steps of: cleaning an oscillating foundation, and stripping well wall pollutants by generating an oscillating effect through periodically changing circulating pressure and flow velocity; electrochemical synergistic cleaning is carried out, and organic pollutants are decomposed through the electrolysis effect; catalytic decomposition cleaning accelerates fracture of a mud cake polymer molecular chain; carrying out ion exchange treatment to change a pollutant charge distribution state; and a circulating purification step: removing reaction products in real time and recovering reaction conditions. Physical and chemical composite cleaning is achieved through the synergistic effect of multiple processes, highly-deviated well annulus pollutants are thoroughly removed, and the well cementation quality and the shaft sealing performance are remarkably improved.

The invention belongs to the technical field of oil and gas well gas production engineering, and particularly relates to a sand prevention gas lift device. The sand prevention gas lift device comprises an eccentric cylinder; the gas lift valve is arranged on the outer side of the eccentric cylinder; the filter mechanism is arranged on the outer side of the eccentric cylinder and connected with the gas lift valve, and fluid outside the eccentric cylinder sequentially passes through the filter mechanism and the gas lift valve to enter the eccentric cylinder.

Embodiment of a method, apparatus, and non-transitory computer readable medium for predicting a screen out event are disclosed herein. In one embodiment, a method comprises obtaining water hammer data for a wellbore; determining an inferred resistance for the wellbore from the water hammer data; comparing the inferred resistance for the wellbore with a measured resistance, wherein the measured resistance comprises at least one of an eroded resistance or a growth rate of the resistance for the wellbore; and predicting a screen-out event occurring in the wellbore based on at least the comparison of the inferred resistance with the measured resistance.

A method and process for temporarily plugging wellbore conductivity using a forced injection of an encapsulated reactive metal having a polymeric coating into perforation tunnels of a target existing wellbore and a second injection under pressure of a swelling elastomeric compound to seal perforated tunnels in a producing wellbore to prevent or minimize frac-hit or frac-bashing to adjacent intersecting wellbores and fracture networks, until such predetermined time as the risk of frac-hit is resolved, the reactive metal becomes exposed, creating the corrosive degradation of the reactive metal and swelling elastomeric compound to decay and further flushed from the perforation tunnels and wellbore to reinstate production flow.

The invention discloses automatic cleaning equipment for geothermal well maintenance, and relates to the technical field of geothermal well cleaning equipment.The automatic cleaning equipment comprises a pipeline adaptive cleaning assembly, the pipeline adaptive cleaning assembly extends into a geothermal well and can clean the inner walls of pipelines with different sizes of the geothermal well, and the top of the pipeline adaptive cleaning assembly is connected with a magnetic connecting structure; under the cooperation of the pipeline adaptive cleaning assembly, the shaft joint mechanical arm and the magnetic connecting structure, the whole device can accurately adapt to vertical, bent and variable-diameter pipelines through the cooperation of laser ranging and a lead screw sliding block adjusting structure and the cooperation of a self-driving wheel and a transmission rod structure, the problems of pipe clamping and blind areas of traditional equipment are solved, and the working efficiency is improved. And by means of the arrangement that the focus of ultrasonic waves coincides with the center of high-pressure water flow, the composite effect that cavitation bubble impact is matched with mechanical water flow cleaning is formed, the hard scale removing efficiency is effectively improved, and under the cooperation of the variable-angle inclined spray head and the adjustable spray hole structure, the circumferential direction can be covered, and different scales can be accurately hit.

The invention relates to the related technical field of oil and gas exploitation equipment, and discloses an adjustable centralizer which comprises a first lantern ring, a second lantern ring and an outer supporting mechanism, the adjustable centralizer guarantees smooth rolling through linkage of outer supporting and cleaning, when an outer supporting roller rolls, a transmission wheel synchronously extrudes a transmission plate, and the outer supporting roller is driven to rotate; the knocking rod knocks the vibration block at intervals in cooperation with the first elastic piece, the cleaning and scraping plate is driven to vibrate and scrape impurities on the outer wall, jamming caused by accumulation of soil and gravel is avoided, the rolling friction advantage is maintained, the well wall friction resistance is reduced, and the drilling tool jamming risk is reduced; according to the adjustable centralizer, through accurate adjustment and positioning, the adjustable centralizer adapts to different well diameters, the supporting plate with scales is matched with the auxiliary positioning mechanism, locking of the clamping convex teeth on the positioning convex teeth can be relieved by pressing the driving pressing ring, the distance between the first lantern ring and the second lantern ring is rapidly adjusted according to the scales, and automatic reset locking is achieved after loosening; it is ensured that the outer supporting mechanism adapts to different shaft diameters, and the universality of the centralizer is improved.

The invention discloses efficient extraction equipment for deep geothermal exploitation based on coal mine geothermal, and relates to the technical field of deep geothermal exploitation. The primary filter cartridge is movably arranged at the bottom end of the underground water pipe and is expanded outwards to relieve the blockage condition; the movement assembly is movably arranged in the first cavity and is driven by water pressure to adaptively expand and shrink the primary filter cylinder; and the scraping assembly is movably sleeved outside the primary filter cartridge and moves downwards under the influence of external expansion of the primary filter cartridge. According to the invention, when the primary filter cylinder is expanded, the gap of the cylinder in the primary filter cylinder is enlarged, and some small-particle impurities can enter the underground water pipe, so that the condition that the primary filter cylinder is seriously blocked is relieved, the device is more suitable for a deep well environment, the blocking condition of the primary filter cylinder is fed back to the device and the device is passively expanded and shrunk, and the service life of the device is prolonged. Compared with electric signal transmission, the instability and hysteresis are weaker, the blockage problem can be more timely and effectively solved, and efficient operation of deep geothermal extraction work is facilitated.

The invention relates to the technical field of ground source heat pump drilling, in particular to ground source heat pump drilling auxiliary equipment which comprises a rigid supporting unit, an elastic supporting unit, a conversion unit and an adjusting unit. Through cooperative cooperation of the rigid supporting unit, the elastic supporting unit, the conversion unit and the adjusting unit, self-adaptive switching of the working state and the contact area under the borehole diameter change is achieved, the inner sleeve and the outer sleeve rotate relatively in the wide-diameter section, the main supporting piece and the auxiliary supporting piece make contact with the borehole wall together to form stable supporting, diameter expansion caused by excessive scraping and loosening of the stratum is effectively avoided, and the working efficiency is improved. Meanwhile, the friction resistance with the well wall is reduced; in the narrow-diameter section, the inner sleeve and the outer sleeve are switched to be in a synchronous rotating state through the switching unit, the adjusting unit drives the auxiliary supporting piece to retract, only the main supporting piece makes contact with the well wall independently and rotates to scrape the wall, the friction resistance is greatly reduced, meanwhile, mud cakes are efficiently removed, and the clamping stagnation hidden danger is eliminated.

Systems and a tool are disclosed herein for improved debris collection within a wellbore. An example debris collection tool can include a motor rotationally coupled to a pump by a first flexible shaft, the pump rotationally coupled to a gearbox by a second flexible shaft, and the gear box rotationally coupled to a milling bit by an additional shaft. The flexible shafts can be made of a flexible, but durable material that can absorb strain created by a pump whose rotor rotates eccentrically with the axis of rotation offset from the axis of symmetry. The flexible shafts can be made of a durable and flexible material that can withstand the strain created by the eccentric rotation.

This technology relates to a system and method of delaying CaCO3 scale formation in an oil production well using a phosphonate scale inhibitor and a chelating agent. The addition of a small concentration (less than 5 ppm) of a chelating agent to the phosphonate scale inhibitor delays the scale induction time and scaling time of CaCO3 scale.

The invention belongs to the technical field of oil and gas engineering, and provides an intelligent sand control screen based on a memory alloy structure and dynamic adjusting.The intelligent sand control screen comprises an outer barrel, an inner barrel, a vibration component, an annular connecting shell, a heating component and a controller, a plurality of first holes are formed in the side wall of the outer barrel, and a fixed barrel is arranged in the center of the lower end of the outer barrel; the lower end of the inner cylinder is closed, an inserting cylinder is arranged in the center of the inner cylinder, the inner cylinder is inserted into the outer cylinder, the inserting cylinder is inserted into the fixed cylinder, a plurality of second holes are formed in the inner cylinder, the vibration component is arranged in the inserting cylinder, the connecting shell is connected with the outer cylinder and the inner cylinder, the heating component is connected with the inner cylinder, and the heating component is connected with the outer cylinder. And the controller is connected with the vibration part and the heating part. Blocked sand can be removed, the size of holes can be controlled, and various working conditions can be met.

An air motor apparatus for air drilling includes a filter assembly at an uphole end that receives compressed air and diverts a constant pressure portion through a filter to a vane motor and a remaining portion to an air hammer at a downhole end via bypass conduits. The apparatus includes one or more sensors for measuring drilling conditions, the sensors being connected to a communication device capable of transmitting the sensor data to the surface. The sensors and their wiring are shielded from high air speeds by bypass conduits and components of the filter assembly.

The utility model provides a variable-diameter drill bit for a water injection well, which relates to the technical field of well drilling devices and comprises a body, the body is of a hollow structure, one end of the body is provided with an assembling part, and the other end of the body is provided with a fixed drill bit; the scraping blades are evenly arranged on the body, assembling grooves matched with the scraping blades are evenly formed in the outer side of the body, and the scraping blades slide in the corresponding assembling grooves in the radial direction of the body. According to the drill bit, the at least two assembling grooves matched with the scraping blades are evenly formed in the outer side of the body, the scraping blades slide in the corresponding assembling grooves in the radial direction of the body, the assembling grooves enable the scraping blades to be kept balanced in the sliding process, the diameter changing stability of the drill bit is guaranteed, and the diameter changing effect on the drill bit is achieved.

The utility model discloses an underground separator with a scale prevention function. Comprising a separator body, anti-scale sheet layers are arranged on the outer surfaces of an inducer, an impeller and a separation wheel of the separator body respectively, and hard alloy coating layers are arranged on the edges of the anti-scale sheet layers. The oil separator has the beneficial effects that the anti-scale sheet layers are respectively arranged on the outer surfaces of the inducer, the impeller and the separation wheel of the separator body, so that the contact area with oil is large, the space of the separator is not occupied, and the oil treatment efficiency is improved. And a hard alloy coating layer for improving the strength is arranged on the edge of the anti-scaling sheet layer.