772results 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.

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.

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 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 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.

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 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 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.

A device for reducing viscosity and dissolving incrustations in pipelines comprising a central tube comprising two ends and one or more external threads at the two ends for coupling, a conical reduction, a protective jacket, and one or more spacer rings. The central tube is fixed to an orifice of the conical reduction by one or more weld fillits. The conical reduction comprising one or more permanent magnet collars and are internal to the protective jacket, the protective jacket is fixed to the conical reduction via a hole fully penetrating the one or more weld fillits. The one or more spacer rings, without a megnetic field dress the central tube, positioned juxtaposed to the one or more permanent magnet collars so that the ends of the one or more spacer rings are fixed to the central tube to preserve the location of the one or more spacer rings.

The invention relates to the technical field of oilfield chemistry, in particular to a nano-composite viscosity reducer, a preparation method, application and a high-viscosity thick oil viscosity reduction method. According to the preparation method, the nano composite viscosity reducer is prepared from a surface-modified nano oxide and an amphiphilic polymer through a solvent exchange method; the nano oxide is nano silicon dioxide nano particles, zinc oxide nano particles or ferric oxide nano particles, and the amphiphilic polymer is a partial esterification product of a styrene-maleic anhydride copolymer or an octadecyl acrylate-methacrylic acid copolymer. According to the preparation method, the viscosity reducer not only can efficiently disassemble a colloid asphaltene network structure, but also has a certain catalytic modification function, does not influence subsequent treatment of crude oil, and has the advantages of high viscosity reduction efficiency, lasting effect, no formation of stable emulsion, shear resistance, good temperature resistance, strong universality and the like.

The invention relates to the field of well drilling, in particular to a cleaning method and cleaning slurry.The cleaning method comprises the steps that cleaning slurries with different viscosities are pumped in through a slurry pump to conduct circulating cleaning on a borehole, and the cleaning process of each circulating period sequentially comprises the three stages of thick slurry cleaning, thin slurry cleaning and thick slurry cleaning, the thick slurry is clean slurry with the Markov funnel viscosity of 300-800, and the thin slurry is clean slurry with the Markov funnel viscosity of 80-200 s. The cleaning slurry takes well slurry as base slurry and comprises sulfonated lignite, polypropylene fibers, high-softening-point emulsified asphalt, 800-mesh superfine calcium, 1200-mesh superfine calcium, polyanionic cellulose and 2500-mesh superfine calcium. The process is simple, the flushing and carrying effects on rock debris and falling blocks of different sizes are good, and the consumption of cleaning liquid is small.

The invention belongs to the technical field of oil exploitation, and particularly discloses a natural vibration pulse well washing tool which comprises a tool body, a connecting column is coaxially connected to one side of the tool body, the two ends of the connecting column are communicated with each other, a plurality of supporting ribs distributed in the circumferential direction are connected between the tool body and the connecting column, and jet flow channels are formed between the adjacent supporting ribs; the tool body internally comprises a connecting cavity, a throttling runner and a natural vibration cavitation cavity which are coaxially communicated in sequence, and the sectional area of the throttling runner is gradually reduced in the direction from the connecting cavity to the natural vibration cavitation cavity; a natural vibration pulse jet flow generation block is arranged in the natural vibration cavitation cavity, and a jet flow nozzle communicating with the natural vibration cavitation cavity and the jet flow channel is formed in one side of the natural vibration cavitation cavity. After flowing through the connecting cavity, the throttling runner and the natural vibration cavitation cavity in sequence, fluid is jetted out through the jet flow nozzle and jetted out from the jet flow channel to clean a shaft. The cleaning efficiency can be improved, and the shaft can be effectively cleaned.

This utility model belongs to the technical field of oil drilling and production equipment, specifically relating to a tubing scraping device. The device includes an upper connector and a scraping head, as well as a rotating mechanism connecting the upper connector and the scraping head. The rotating mechanism includes a support sleeve connected to the upper connector and a rotating body with one end anti-detached from the support sleeve and the other end connected to the scraping head. Track grooves are evenly distributed on the outer wall of the rotating body. A guide pin is provided at the end of the support sleeve away from the upper connector. The track grooves and guide pin are slidably engaged to allow the rotating body to rotate and axially displace relative to the support sleeve when the tubing scraping device is lifted or lowered. In use, by lifting or lowering the device, the track grooves of the rotating body slidably engage with the guide pin of the support sleeve. The guide pin slides along the track grooves, forcing the rotating body to rotate and generate axial displacement, thereby driving the scraping head to actively rotate and move axially. Compared with the prior art, which passively drives the scraping head through scraper friction, this effectively improves scraping quality and efficiency.

The application discloses a non-oxidative weak-acid polyacrylamide degrading agent and a preparation and use method thereof, and the degrading agent comprises the following components: a reducing agent, a regulator, a mutual solvent and water; the reducing agent is one of 3-O-ethyl ascorbic acid ether and L-ascorbic acid-2,6-dibutyrate; the regulator is ammonium chloride; and the mutual solvent is one of ethylene glycol monobutyl ether and isopropyl alcohol. The problems that the existing degrading agent needs to be isolated by a plug for redox reaction with subsequent injected mud acid or secondary precipitation is caused by metal ions such as Na + , K + , Fe 2+ and the like in the degrading agent and subsequent injected mud acid are effectively solved.

A method includes obtaining well data of the well from a well control system and a water treatment system of a well. The method further includes obtaining a set of operation parameters for the well control system and the water treatment system, wherein the set of operation parameters define, at least in part, operation of the well control system and the water treatment system. The method further includes determining, with a machine learning (ML) model, a predicted scale formation based on the well data and determining, based on the predicted scale formation, a recommended treatment comprising a chemical injection using the water treatment system. The method further includes adjusting, with a well controller and a water treatment controller, the set of operation parameters based on, at least, the predicted scale formation, wherein adjusting the set of operation parameters executes the recommended treatment on the well.

The invention relates to the technical field of oil well paraffin removal, in particular to an electric submersible screw pump well anti-paraffin-deposition chemical injection and thermal washing integrated device. Comprising a pesticide injection barrel, a high-pressure plunger pump, a three-way valve and a connecting pipe, the connecting pipe is fixedly connected and communicated with a plurality of butt-joint pipes, annular injection assemblies with the same number as the butt-joint pipes are arranged outside an oil pipe, and the butt-joint pipes are communicated with the corresponding annular injection assemblies respectively. A paraffin remover and hot water are injected at fixed points at different depths of an oil pipe through a plurality of butt joint pipes, so that a paraffin removal medium completely bypasses the electric submersible screw pump, chemical swelling and high-temperature thermal damage of the agent to stator rubber are avoided fundamentally, the service life of the pump is remarkably prolonged, meanwhile, the paraffin remover and the hot water are continuously supplemented at different depths, and the service life of the pump is prolonged. The concentration of the paraffin remover is kept stable, the temperature of hot water is kept, the dissolving strength of the paraffin remover on a paraffin precipitation layer and the melting effect of the hot water on wax are ensured, and the paraffin removal thoroughness and the operation efficiency are greatly improved.

A wellbore cleaning tool includes an elongate body having at least one groove positioned along the body, one or more tool connectors coupled to the groove of the body, and one or more engagement tools coupled to the body through the tool connector, whereby an annular gap is formed between the tool body and the one or more engagement tools. The one or more engagement tools are configured to engage with an inner surface of a pipe.

The invention is a washable well gravity setting side flow packer used in simple separate layer water injection string, belonging to oil production engineering application technology. The invention has two structures. The first structure shown in figure 1 is composed of upper body 1, center tube 2, big spring 4, liner 9, wash well piston 6, rubber cylinder group 10, lower body 16 and setting shear pin 15. The second structure shown in figure 2 is different from the first structure in that there is no upper side flow channel, but the lower side flow channel is provided with a check valve. The gravity setting side flow packer is used for separate layer water injection, and the water distribution plugger can be set on the center tube of the packer, without using independent water distributor, thus being beneficial to fine layer water injection and convenient for plugger fishing. The packer setting does not need pump truck pressure, but relies on pipe string heavy pressure for setting, and there is no problem of pipe string overload during pipe string lifting, thus simplifying the separate injection process.

The present invention addresses to a method of removing scale from the DHSV of the oil production string aiming at maintaining the production of the wells and thus avoiding the loss of production. First, a neutralizing solution is placed in the service line, before pumping the scale removing solution through the string to act on the DHSV. Next, the acid is pumped into the production string to react with the calcium carbonate scale. After the time for the dissolution of the scale inside the DHSV, the well is opened for production by the service line. The spent acid is mixed with the neutralizing solution inside the service line, reducing its corrosiveness in relation to the service line, contributing to its preservation.