1634results about "Cleaning apparatus" patented technology

Systems and methods of the present disclosure provide systems and methods for receiving one or more sets of parameters related to an operation corresponding to a wellbore. At a first time, the operation is simulated using the one or more sets of parameters and at least one simulator. Pertinent results from the simulation are recorded and stored in a table. The pertinent results include at least one constraint. At a second time, the constraint is retrieved from the table for performance of the operation, and the constraint is used to control the operation.

A rotating check 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, the check valve, rotational shafts. On its uphole end, the check valve can be coupled with the bailer such that the check valve can rotate relative to the bailer. Also on the uphole end, the check valve can be rotationally coupled to a shaft that passes through the bailer and couples with the gearbox. On the downhole end, the check valve can be rotationally coupled to the milling bit. The check valve can include a torque transfer mechanism that transfers torque generated by the motor and gearbox to the milling bit. The check valve can include a unidirectional flow control mechanism that restricts the flow of fluid and debris to the uphole direction.

Systems and methods of the present disclosure includes a mixer configured to mix air and hydrocarbons and a burner configured to receive the mixed air and hydrocarbons and to generate syngas. The system also includes a cooling system configured to receive the syngas and to cool the syngas to form cooled syngas. The system further includes a collector configured to collect carbon from the cooled syngas as soot. Moreover, the system includes a flare stack configured to receive the cooled syngas and to burn off at least part of the cooled syngas.

The invention relates to the technical field of oil exploitation equipment, in particular to a throttling kill manifold with a sand prevention structure, which comprises a first four-way joint and second four-way joints communicated with two sides of the first four-way joint through confluence branch pipes. One side of the first four-way joint is communicated with a main blowout pipeline, and the same side of the second four-way joint on the main blowout pipeline is communicated with a throttling pipeline; a sand prevention structure is arranged in the second four-way joint, a cleaning assembly for cleaning the sand prevention structure is arranged in the confluence branch pipe, a sand collection cylinder assembly is installed on the sand prevention structure, and an overhaul gate valve is installed on the confluence branch pipe. According to the sand prevention structure, fluid entering the throttling pipeline is filtered, the sand prevention structure is cleaned through the cleaning assembly, and the filtering effect of the sand prevention structure is guaranteed.

The invention relates to the technical field of oil and gas field development injection and production engineering, in particular to a same-well jet flow production and injection device and a using method. According to the technical scheme, a jet oil-well pump is connected to a ground wellhead through an oil pipe and a small-diameter oil pipe, a throwing and fishing pump core is arranged in the jet oil-well pump, the lower portion of the jet oil-well pump is connected with a jet water injection pump through an oil blocking water filter, and a mixed liquid outlet pipe is located on a water injection layer below a packer; one part of high-pressure power liquid pumped into the ground enters the jet flow oil well pump and ejects and pumps low-water-content crude oil to the ground; and the residual high-pressure power liquid passes through a throwing and fishing pump core in the jet flow oil well pump to enter the jet flow water injection pump, and injects and sucks the formation water which is deoiled and filtered by the oil blocking water filter to be injected into a water injection layer. The device has the advantages of being simple in structure, low in failure rate, reliable in operation, long in pump inspection period, convenient to wash wells and inspect pumps, capable of saving investment and operation cost, more suitable for highly-deviated wells, dense wells in the middle and later periods of exploitation, and capable of meeting the essential requirements of multi-layer layered injection-production development in the high water cut period and energy conservation and consumption reduction.

The invention belongs to the technical field of oil and gas exploitation, and particularly discloses an under-pump immovable pipe column washing sand control screen pipe column, a well washing method and a device for oil and gas exploitation, the under-pump immovable pipe column washing sand control screen pipe column comprises at least one section of sand control screen pipe, and each section of sand control screen pipe comprises an upper connector, a lower connector and a lower connector; the central pipe is connected with the upper joint; the lower joint is connected with the central pipe; and the spring type filtering structure is arranged in the central pipe, and the spring type filtering structure is configured to filter part of stratum sand carried by output liquid entering the sand control screen pipe from the lower connector in the production process and deform under the pressure effect in the well washing process to remove the stratum sand blocking the spring type filtering structure. During well flushing, the sucker rod is lifted upwards, the plunger is lifted out of the pump cylinder, then flushing fluid is pumped into the oil sleeve annulus from the ground, the spring type filtering structure is lengthened under the pressure effect, the overflowing gap is enlarged, blockages are backwashed out of the ground, and the sand control screen does not need to be pulled out of the ground.

The invention discloses an embedding device for a pore pressure sensor, and relates to the technical field of pore pressure sensor embedding, the embedding device comprises a drill hole cleaning mechanism and a first mounting ring mounted at the bottom of the drill hole cleaning mechanism, a cleaning mounting mechanism is arranged on the outer side of the drill hole cleaning mechanism, and a lifting support is arranged at the top of the cleaning mounting mechanism; the drilling cleaning mechanism comprises a fixing ring, first rotating supports are symmetrically installed on one side of the top of the fixing ring, first rotating motors are fixedly installed on the outer sides of the first rotating supports, and the output ends of the first rotating motors are fixedly connected with first rotating worms. A conveying motor is started to drive a conveying rotating rod and a conveying spiral blade to rotate, soil and stone generated by drilling are conveyed into a collecting box by utilizing the structural characteristics of the conveying spiral blade, a cleaning scraper is driven by a drilling conveying cylinder to rotate, and the conveyed soil and stone can be collected and discharged through a blow-down valve.

The present invention belongs to the technical field of oil extraction and provides a sand fracturing wellhead device, comprising a main pipe, a branch pipe connected to the side of the main pipe, a mounting ring slidably installed in the branch pipe, and a second telescopic member fixedly installed in the branch pipe to drive the mounting ring to move, the mounting ring and the branch pipe are coaxially arranged and the outer side of the mounting ring is in sliding contact with the inside of the branch pipe, a first filter is fixedly installed in the mounting ring, and a temporary storage box is provided on the branch pipe, the temporary storage box is located on the outside of the branch pipe and a storage box and a connecting groove are fixedly installed at both ends of the temporary storage box, and the connecting groove is connected to the branch pipe. Compared with the prior art, the beneficial effects of the present invention are as follows: impurities on the first filter screen will fall off the first filter screen due to speed reasons, and at the same time, the oil flowing into the connecting groove will drive the impurities that have fallen off the first filter screen into the temporary storage box, thereby achieving the cleaning of impurities on the first filter screen, and the cleaning of the first filter screen can be achieved without stopping the transportation of oil.

A system and method are provided for adding chemicals to a produced fluid in a wellbore. An exemplary system includes a gauge hanger and a permeable container. The permeable container includes a solid cylindrical body, end caps placed at each end of the solid cylindrical body, and holes disposed proximate to each end of the permeable container, wherein the holes allow the produced fluid to flow through the permeable container from one end of the permeable container to the opposite end of the permeable container. The system further includes a well treatment chemical disposed in the permeable container.

Embodiments presented provide for a method for calculation of an optimal scheme for wellbore cleanup. In embodiments, an emissions measure is used to minimize environmental impact from wellbore cleanup activities while establishing the most efficient steps and techniques to be performed during the cleanup activities.

The invention discloses a road engineering bored pile hole cleaning device, and relates to the technical field of road engineering. The upper end of the lifting rod is fixedly connected with a fixing frame arranged on the ground surface; the adjusting and collecting mechanism is arranged at the lower end of the lifting rod; the surrounding driving mechanism is arranged on the lifting rod; the elastic telescopic cross rod assembly is horizontally arranged, and one end of the elastic telescopic cross rod assembly is vertically and fixedly connected with the surrounding driving mechanism; the cleaning scraper is vertically arranged, and one end of the cleaning scraper is vertically and fixedly connected with the elastic telescopic cross rod assembly and abuts against the hole wall; the longitudinal sliding compression assembly is fixedly arranged at the bottom of the surrounding driving mechanism; one end of the connecting rod is connected with the longitudinal sliding compression assembly, and the other end is hinged to the lower end of the cleaning scraper; one end of the supporting rod is hinged to the elastic telescopic cross rod assembly, and the other end is slidably connected with the connecting rod.

The utility model discloses a grouting device for overlying strata separation layer grouting construction, and particularly relates to the technical field of grouting pipes, the grouting device comprises a grouting pipe body, supporting frames are arranged on the inner surface of the grouting pipe body, a cleaning device is arranged between the two supporting frames, the cleaning device comprises a casing pipe, and the casing pipe is sleeved on the supporting frames. A rotating rod is rotatably installed on the inner surface of the sleeve, a spiral groove is formed in the inner wall of the sleeve, a vertical groove is formed in the upper end of the rotating rod, a sliding block is slidably installed on the inner surface of the vertical groove, a spiral magnet sliding in the spiral groove is further fixed to one end of the sliding block, and a cleaning assembly is arranged on the outer surface of the sleeve. According to the grouting device for overlying strata separation layer grouting construction, the design of the cleaning device is adopted, and when the spiral scraping plate rotates and moves downwards through inclination of the spiral scraping plate, grout gradually flows downwards along the inclined face of the spiral scraping plate, so that the grout is discharged out of the bottom of the grouting pipe body, and cleaning of the grouting pipe body is facilitated.

Method of removing casing from a well, in which an annulus between the outside of the casing and the inside of a surrounding downhole body is at least partially filled by debris, the perforated section of casing is washed in casing lengths shorter than the perforation length and an attempt made to pull the casing after each shorter length is washed. If the casing is free after washing only a shorter section of the perforated section of casing then it can be recovered and saves the washing time. A bottom hole assembly is described which includes a downhole power tool to exert a greater force to pull the section of casing between washing steps.

A chemical canister is configured to be placed in a wellbore. The chemical canister includes the following features. A housing defines a chemical reservoir. A check valve regulates flow between the reservoir and an outside environment.

The invention provides a composite synergistic system for a shale gas old well and an immovable string production increasing process. The composite synergistic system mainly comprises the following substances: 10-12% of a wetting improver; 4%-6% of a scale remover; 2%-3% of a scale inhibition dispersant; 5%-10% of a resistance-reducing discharge aiding agent; 15%-20% of a synergistic accelerant; the wetting improver is a mixture of alkyl polyglucoside, an anionic surfactant sodium dodecyl benzene sulfonate and deionized water, the content of the alkyl polyglucoside in the wetting improver is 5%-10%, and the content of the anionic surfactant sodium dodecyl benzene sulfonate is 15%-18%; the descaling agent is a mixture of sodium alpha-olefin sulfonate and nonylphenol polyoxyethylene ether ammonium sulfate, and the mass ratio of the sodium alpha-olefin sulfonate to the nonylphenol polyoxyethylene ether ammonium sulfate in the descaling agent is (2: 1)-(3: 1). According to the composite synergistic system, through combination and reuse of different materials and different doses, the multifunctional composite synergistic system integrating vibration, permeation and dispersion effects is researched and developed, and therefore immovable tubular column yield increase construction of a shale gas old well is achieved.

The invention belongs to the technical field of oil exploitation, and provides a sand-prevention fracturing wellhead device which comprises a main pipe, the side face of the main pipe communicates with a branch pipe, a mounting ring is slidably mounted in the branch pipe, and a second telescopic part for driving the mounting ring to move is fixedly mounted in the branch pipe. The installation ring and the branch pipe are coaxially arranged, the outer side face of the installation ring is in sliding contact with the interior of the branch pipe, a first filter screen is fixedly installed in the installation ring, a temporary storage box is arranged on the branch pipe and located on the outer side of the branch pipe, a storage box and a communicating groove are fixedly installed at the two ends of the temporary storage box respectively, and the communicating groove communicates with the branch pipe. Compared with the prior art, the device has the following beneficial effects that impurities on the first filter screen can be separated from the first filter screen due to the speed, meanwhile, petroleum flowing into the communicating groove can drive the impurities separated from the first filter screen to enter the temporary storage box, and cleaning of the impurities on the first filter screen is achieved; and the first filter screen can be cleaned without stopping petroleum conveying.

A downhole apparatus with an internal surface defining a cavity. The cavity houses one or more sealed packs containing chemicals used in wellbore operations. The downhole apparatus optionally includes either fluid ports to equalize the wellbore pressure or one or more compensating pistons for adjusting the volume of the cavity in response to wellbore conditions such as temperature or hydrostatic pressure. The chemicals are released into the wellbore when the downhole apparatus is milled or when the sealed packs are dissolved.

An apparatus includes a dissolvable gauge cutter, a temperature sensor, and a pressure sensor. The dissolvable gauge cutter is made of a dissolvable alloy. The dissolvable gauge cutter is configured to be disposed within and travel through a tubular installed within a wellbore. The dissolvable gauge cutter is configured to dislodge solids from an inner wall of the tubular as the dissolvable gauge cutter travels through the tubular down to a specified depth within the wellbore. The dissolvable gauge cutter is configured to completely dissolve after reaching the specified depth. The temperature is configured to measure a temperature of a surrounding fluid as the dissolvable gauge cutter travels downhole through the tubular to the specified depth. The pressure sensor is configured to measure a pressure of the surrounding fluid as the dissolvable gauge cutter travels downhole through the tubular to the specified depth.

The invention relates to the technical field of fracturing, and particularly discloses a sand-prevention fracturing wellhead device which comprises a wellhead pipe, the wellhead pipe comprises a pipeline body and a conveying pipe, a filter pipe is arranged on the side face of the pipeline body, a filter assembly is installed in the filter pipe, and the filter assembly is in meshed connection with a buffer gear assembly. A locking assembly is installed on the side face of the buffering gear assembly, the locking assembly rotationally fixes the buffering gear assembly, a fan-shaped assembly is hinged to the side face of the filtering assembly, and a cleaning assembly is installed in the filtering assembly. By arranging the automatic valve and the filtering assembly, when the gravel content reaches a threshold value and the filtering effect is seriously reduced, the automatic valve is automatically controlled to close the pipeline to form a closed sand discharging space, so that the device can automatically control the automatic reaction according to the internal sand amount, and the filtering structure always keeps a higher filtering effect.

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.

Systems and methods for performing an intervention operation in a wellbore using a friction reducer fluid include a coiled tubing insertable into the wellbore, a pump operable to pump the friction reducer fluid through the coiled tubing and into the wellbore, and sensors operable to detect wellbore conditions. A controller including a processor is operable to automatically predict a wellbore depth at which the coiled tubing will incur a lock-up in the future based on the wellbore conditions and control the pump to pump the friction reducer fluid though the coiled tubing and into the wellbore to prevent the future lock-up.

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 and gas resource exploration and deep coal and rock gas development, in particular to a wellbore unblocking method based on hydrate impact by carbon dioxide phase change, which comprises the following steps: S1, collecting well pipe column data of a wellbore completely blocked by hydrate, and measuring the depth, temperature and pressure of the hydrate; s2, prefabricating a carbon dioxide phase change impact scheme: according to the size of an oil pipe, the strength of the oil pipe, the depth of hydrate and the pressure and temperature of a shaft above the hydrate, the length and weight of a carbon dioxide phase change device used for the operation of the well to be unblocked and the amount of liquid carbon dioxide are formulated; and S3, the carbon dioxide phase change device is put into the well. The carbon dioxide phase change impact hydrate wellbore unblocking method can be applied to wells with wellbores completely blocked by hydrates and without flow channels, has the advantages of being easy and convenient to operate, large in impact force and high in unblocking efficiency, and solves the problem that when the wellbores are completely blocked by the hydrates and no flow channels exist, the unblocking difficulty is large.

A drainage and gas production device for a horizontal well for coalbed methane of a coal mine area, the device comprising a surface horizontal well and a downhole borehole section (6), wherein a horizontal section (4) of the surface horizontal well is in communication with the downhole borehole section (6), a communication point (7) of the horizontal section (4) of the surface horizontal well and the downhole borehole section (6) is located at an end A or a middle or an end B of the horizontal section (4) of the surface horizontal well; and the other end of the downhole borehole section (6) is connected to a gas-water-slag separation device (15) located in a downhole drill site (5).

The invention relates to the technical field of underground mining, and provides a high-temperature shaft full-circumferential pressure compensation casing packer which comprises an anchoring mechanism, the anchoring mechanism comprises a slip bowl, the slip bowl is arranged on a center pipe in a sliding and sleeving mode, the slip bowl and the center pipe synchronously rotate, the slip bowl is located above a centralizing sleeve, and the centralizing sleeve is located above the centralizing sleeve. A plurality of slip petals which are axially arranged at intervals are arranged on the slip bowl; the scraping plate is arranged on the slip bowl and located between every two adjacent slip petals, and the outer side edge of the scraping plate is used for abutting against the inner wall of the casing pipe; the cone is slidably arranged on the center pipe in a sleeving mode and rotates synchronously with the center pipe, the cone is located above the slip bowl, the small end of the cone faces the slip bowl, and the large end of the cone is connected with the lower end of the rubber sleeve. According to the technical scheme, in the impurity scraping process, the scraping plates arranged between the adjacent slip petals rotate along with the central pipe, impurities on the inner wall of a casing pipe are effectively removed, the problem that the expansion resistance of the slip petals is inconsistent due to the impurities is solved, and conditions are created for synchronous expansion of the slip petals.

Systems and methods of the present disclosure includes a mixer configured to mix air and hydrocarbons and a burner configured to receive the mixed air and hydrocarbons and to generate syngas. The system also includes a cooling system configured to receive the syngas and to cool the syngas to form cooled syngas. The system further includes a collector configured to collect carbon from the cooled syngas as soot. Moreover, the system includes a flare stack configured to receive the cooled syngas and to burn off at least part of the cooled syngas.

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.

A method may include providing a treatment fluid comprising a metal sulfide dissolver and a base fluid. The metal sulfide dissolver includes a chelating agent, a boosting agent, a scaling agent, and a dispersing agent. The treatment fluid is then injected to contact a metal sulfide scale, which dissolves at least partially. The treatment fluid may be injected into a wellbore as a standalone treatment or as an additive.

A method for milling and removing debris in a wellbore, comprising: moving a collecting while milling (CWM) tool downhole into the wellbore; and conducting a first operation with the CWM tool, wherein the first operation comprises: a first cycle including operating a motor of the CWM tool at a first torque and a first speed, wherein the first operation includes milling an obstruction in a wellbore; and a second cycle including operating the motor of the CWM tool at a second torque and second speed to power a centrifugal pump to circulate wellbore fluid through a bailer of the CWM tool to collect debris, wherein the first torque is greater than the second torque and the second speed is greater than the first speed.

The present invention relates to a wireline intervention tool string (1) for operating in a well (2) having a longitudinal axis, a top (51) and a bottom (52), comprising a tool housing (3) having a longitudinal tool axis, a first part connected to a wireline and configured to face the top of the well, the first part comprising an anchoring section (6) and configured to be rotationally stationary during operation, an operational tool (7) configured to rotate relative to the first part during operation, a driving unit (8) arranged in the first part and configured to provide rotational force to the operational tool, the driving unit being powered via the wireline, and a vibration-generating unit (9) for providing vibration force to the operational tool, wherein the wireline intervention tool string further comprises a vibration-dampening unit (10) arranged in a longitudinal position uphole relative to the operational tool for preventing vibrations generated by the vibration-generating unit from releasing tool sections from other tool sections of the wireline intervention tool string, at least in the first part. The invention also relates to downhole tool system comprising the wireline intervention tool string and a driving section / downhole tractor (15).