382 results about "Drill cuttings" patented technology

The invention discloses a drilling, deslagging, charging and blocking integrated device, which belongs to the technical field of tunnel engineering and open-air engineering blasting equipment, and comprises a mobile vehicle body, a multi-link structure, a drilling and deslagging device, an explosive filling device and a stemming blocking device. The drilling and deslagging device is used for drilling and discharging drilling cuttings; and the explosive filling device independent track is arranged above the drilling machine beam track in parallel and is used for accurately conveying detonators and emulsion explosives into holes. After drilling is completed, the explosive filling device moves downwards in parallel to be aligned with the hole site for charging; after charging, the device moves upwards to drive the stemming plugging device to reach an orifice, and drilling cuttings discharged by drilling are directly used as stemming raw materials for automatic compaction and plugging. The problems that in the traditional blasting construction process, equipment is frequently switched, the manual operation efficiency is low, high-risk link manual operation needs to be conducted, and stemming raw materials need to be prepared independently are solved, automatic continuous operation of the whole process of drilling, charging and plugging is achieved, and the construction efficiency and intrinsic safety are remarkably improved.

The invention relates to the technical field of oil-gas field development, and discloses a preparation method of a polymer coating agent for drilling fluid. Acrylamide, acrylic acid, adamantane modified quaternary phosphonium salt modified pyridyl benzoxazine and silane imidazoline quaternary ammonium salt are polymerized and then dried, and the polymer coating agent for the drilling fluid is obtained. Due to the benzoxazine, benzene ring and adamantane structures, the rigidity and stability of the polymer coating agent at high temperature are improved; hydrophilic cation ends in the quaternary phosphonium salt and the quaternary ammonium salt are adsorbed on the surface of the shale, and hydrophobic ends cover the surface of the shale, so that contact infiltration of water molecules is inhibited, and the coating inhibition property is improved; a silicon-oxygen bond is not easy to break at high temperature, so that the high-temperature resistance of the coating agent is improved; silane reacts with silicon-oxygen bonds on the surface of the shale to be grafted on the surface of the shale, so that the coating inhibition effect is enhanced; the pyridine group and the imidazoline group increase adsorption points of the polymer coating agent, multi-point adsorption is carried out on drilling cuttings and well walls, coating is formed, and the coating inhibition effect is further enhanced.

The invention discloses an early warning processing method, device and equipment for mine micro-seismic monitoring and a medium, and relates to the technical field of mine safety engineering.The method comprises the steps that when mine micro-seismic early warning is triggered, whether a rock burst risk exists in a current mine area or not is predicted, and a current prediction result is obtained; if the current prediction result represents that the rock burst risk exists, a target dangerous area in the current mine area is recognized, and danger relieving measures and monitoring-recovery operation are executed on the target dangerous area; if the rock burst risk does not exist, whether the drilling cutting data of the current mine area is larger than a first drilling cutting amount threshold value or not is judged, and a drilling cutting data judgment result is obtained; if the drilling cutting data judgment result is that the drilling cutting data is greater than or equal to the first drilling cutting amount threshold value, judging that the rock burst risk exists in the current mine area, and skipping to execute the step of identifying a target dangerous area in the current mine area; and if the drilling cutting data is smaller than the first drilling cutting amount threshold value, production limiting-monitoring-recovery operation is executed. And an accurate pre-warning post-processing flow is realized.

The invention discloses an efficient reverse circulation high-pressure composite cutting cast-in-situ bored pile construction method, and belongs to the technical field of pile foundation construction. The cast-in-situ bored pile construction method comprises the steps of pile hole drilling, reinforcement cage mounting and concrete pouring, a novel bored pile machine is adopted in the pile hole drilling process, a reverse circulation high-pressure composite cutting circulation system is innovatively designed, high-pressure and low-pressure circulation liquid jet flow is matched with an alloy drill bit in the drilling process to cut a soil body, and the high-pressure and low-pressure circulation liquid jet flow is matched with the alloy drill bit to cut the soil body. Meanwhile, high-pressure air is matched to carry circulating liquid and drilling slag to be discharged outwards along a slag discharging channel between the power drill rod and a drill hole, the soil body cutting and crushing efficiency is improved, and the device can cope with various geologies; and meanwhile, positive pressure is kept in the drilled hole through high-pressure air, the stability of the hole wall is improved, and the drilling depth is remarkably increased. And moreover, the drilling driving mechanism of the pile machine adopts a sliding design, so that subsequent reinforcement cage mounting and concrete pouring operation can be directly carried out, and the operation convenience and the construction efficiency of the cast-in-situ bored pile are improved.

The invention relates to the technical field of drilling machines of land transportation devices, in particular to self-protection type municipal road and bridge drilling and punching equipment which comprises a drill bit, a plurality of elastic supporting assemblies are arranged on the drill bit in the circumferential direction around the circle center of the drill bit, and stirring air suspending assemblies for stirring drilling cuttings are arranged on the elastic supporting assemblies. The elastic supporting assembly is an elastic telescopic rod, the stirring and air suspending assembly comprises a mounting cylinder fixedly arranged on the elastic supporting assembly, a plurality of stirring plates are arranged in the mounting cylinder in the circumferential direction around the circle center of the mounting cylinder, the stirring plates are obliquely arranged, and an air suspending plate is arranged between every two adjacent stirring plates and located above the supporting plates; the inclination direction of the suspended plate is the same as that of the supporting plate, one end of the suspended plate is connected with the top end of one stirring plate, and the other end of the suspended plate is arranged on the inclined surface of the other adjacent stirring plate.

The invention discloses a metal material high-precision cutting system, which belongs to the technical field of metal processing, and comprises a platform body provided with a carrying guide rail and a cutting guide rail, the carrying guide rail is provided with a jig assembly, and the cutting guide rail is provided with a double-shaft walking mechanism of which the end part is provided with an actuator; a pecking drill cutting assembly integrated with an air blade chip removal assembly is arranged on the side face of the actuator. By arranging the pecking drilling cutting assembly, the voice coil motor drives the saw blade to achieve high-frequency micro-amplitude reciprocating motion, pecking drilling type cutting is formed, cutting resistance and thermal stress are effectively reduced, and casting microcracks and saw blade tooth breakage are avoided; a monitoring piston can provide buffering and vibration reduction, resistance is fed back in real time through an air pressure sensor so as to dynamically adjust a double-shaft walking mechanism, a protective cover and an air blade chip removal assembly cooperate, a front nozzle removes surface impurities and cuttings in a kerf, a rear nozzle conducts sweeping and cleaning, and it is ensured that the kerf is clean and effectively cooled.

A method for hydrocarbon production from a carbonate formation includes receiving a carbonate texture description of a drill cutting. A pre-defined grain fraction is assigned to the drill cutting based on the texture description. The pre-defined grain fraction is one of a set of pre-defined grain fractions and each pre-defined grain fraction of the set of pre-defined grain fractions corresponds to a respective one the set of carbonate texture descriptions. Based on the pre-defined grain fraction assigned to the drill cutting and a depth of the wellbore from which the drill cutting is taken, an estimated porosity of the drill cutting is determined using an algebraic equation, coefficients for which are determined by regression analysis using reference rock samples that have been assigned pre-defined grain fractions from the same set of pre-defined grain fractions.

The invention relates to the technical field of oil content measurement, in particular to a method for measuring the oil content of oil-based drilling cuttings and application of the method. The method comprises the following steps: querying a dynamic extraction curve database according to sample lithology and a processing method, and determining an optimal extraction time point by calculating a concentration change rate; multi-point sampling is carried out in the extraction process, the environment temperature and pressure are measured at the same time, an environment influence model comprising a temperature influence sub-model and a pressure influence sub-model is established, and an environment correction factor is obtained; performing infrared spectrum measurement on the extract sample, performing data correction, and calculating an average value and a standard deviation to remove an abnormal value; and finally, calculating the final oil content by adopting a piecewise linear equation aiming at different concentration ranges. By considering the lithologic characteristics, the environmental influence and the segmented linear relation, the measurement precision and reliability are remarkably improved.

The utility model provides a water base, oil base drillings integrated treatment system, water base, oil base drillings integrated treatment system includes feeder, spin-dry centrifugal mechanism, solid residue collection tank and liquid phase recovery device, wherein the spin-dry centrifugal mechanism includes spin-dry machine, centrifuge, spin-dry machine liquid storage bin and centrifuge liquid storage bin, spin-dry machine is connected with feeder, and centrifuge liquid storage bin is connected with centrifuge liquid storage bin. The spin dryer conveys the spin-dried and separated liquid phase into a liquid storage bin of the spin dryer; the centrifugal machine is connected with the spin dryer liquid storage bin, the centrifugal machine liquid storage bin is connected with the centrifugal machine, and the centrifugal machine conveys a liquid phase obtained through centrifugal separation into the centrifugal liquid storage bin; the solid slag collecting tank is arranged on the outer side of the spin dryer, and the solid slag collecting tank is used for recycling solid slag separated by the spin dryer; and the liquid phase recovery device is connected with the liquid storage bin of the centrifugal machine and is used for recovering a liquid phase in the liquid storage bin of the centrifugal machine. The water-based and oil-based drilling cutting integrated treatment system disclosed by the utility model is high in integration degree and small in occupied area.

The utility model discloses a dedusting deslagging blowout prevention system buffer device which comprises a box body, a high negative pressure pipeline connector, a low negative pressure pipeline connector and a box body spraying device are arranged on the left side and the right side of the top of the box body respectively, the high negative pressure pipeline connector and the low negative pressure pipeline connector are connected to a high negative pressure pipe and a low negative pressure pipe respectively, and a deslagging drainage port is formed in the left side of the box body. A dust removal device negative pressure pumping opening, an orifice slag discharging and conveying opening and a sewage high-pressure water switching opening are sequentially formed in the right side of the anti-spraying hole dust remover from top to bottom and are respectively connected to a dust discharging pipe of the anti-spraying hole dust remover, a slag discharging pipe of the drilling machine and a high-pressure water pipe; the anti-spraying hole dust remover is connected to a dust collecting pipe connected with the drilling machine. Drilling cuttings generated in the drilling construction process, compressed air used for deslagging and gas enter the buffer box in a unified mode, centralized treatment is carried out, and the problems that in the drilling process, dust prevention and control are difficult, gas fluctuates, an extraction pipeline is blocked by accumulated slag and the like are solved.

The invention belongs to the technical field of coal mine drilling, and discloses a while-drilling safety comprehensive early warning system which comprises the following four modules: a hole gas-solid collecting device which is responsible for sealing a drilling hole, collecting gas and drilling cuttings and dynamically adjusting internal and external pressure balance; the orifice monitoring host integrates a data processing unit and receives and analyzes sensor signals in real time; and the comprehensive monitoring host comprises a gas measuring system, a drilling cutting quantity measuring system, a pressure fan and the like. According to the while-drilling safety comprehensive early warning system, the gas emission amount, various gas concentrations (methane, carbon monoxide, carbon dioxide and the like), the drilling cutting amount index and the orifice pressure difference are continuously and synchronously monitored while drilling, natural ignition, coal and gas outburst, gas explosion and other underground risks are comprehensively covered, the micro-differential pressure sensor is adopted for feeding back the pressure difference inside and outside an orifice in real time, and the safety of the orifice is guaranteed. And the gas emission rate is dynamically adjusted in combination with the ejector.

The invention relates to the technical field of coal seam gas extraction, in particular to a gas extraction method for a soft and hard coal composite area. In the drilling and production process, drilling cuttings and drilling machine mechanical parameters along with the coal seam; soft and hard coal area demarcation and characteristics are dynamically discriminated, and spatial interpolation and three-dimensional geological modeling are carried out in combination with the drilling spatial position; the boundary radiuses of the soft coal area, the hard coal area and the transition area of the soft coal and the hard coal are obtained through calculation, permeation increasing measures are arranged for drilling operation of the corresponding coal seam areas respectively, and hydraulic measure parameters are adjusted; and observing to obtain the fracture expansion range and the size of the cavity, and performing gas extraction when the conditions are met. According to the method, the gas extraction effect of the different coal seam composite area is improved by dynamically recognizing the soft and hard coal areas and combining the areas with precise gas treatment. The method can guide actual gas extraction engineering in the underground coal mine field, and is of great significance to the related fields of carbon sequestration, coal bed gas development and mine gas control.

The invention belongs to the technical field of excitation detection, and provides a movable seismic source system carried by a deep mine heading machine and a positioning excitation detection method, which are characterized in that the excitation time delay of each seismic source unit in an array is accurately controlled by utilizing a controllable seismic source, so that the seismic source units form synchronous superposition in a specific direction, and the detection of an active source is realized; in the aspect of passive source detection, vibration generated when the jumbolter cuts surrounding rock is used as a vibration source, a pilot sensor installed near an anchor rod drill is used for recording an original vibration signal, namely cutting vibration, when the jumbolter works, and signals collected when the jumbolter works and signals collected by the pilot sensor are subjected to cross-correlation processing, so that the original vibration signal is obtained. And reconstructing a virtual seismic source, and then carrying out data processing and passive source imaging. And the active source detection result and the passive source detection result are combined to interpret the unfavorable geologic body, so that the detection of the position is realized, and the geological interpretation of the whole space of the mine can be realized.

The invention discloses an air distribution and slag guide device for reverse circulation down-the-hole hammer drilling. The air distribution and slag guide device comprises an outer pipe, a slag guide pipe, an air distribution power mechanism, a drill bit and a drilling cutting conveying mechanism. The outer pipe is provided with an air inlet. The slag guide pipe is coaxially arranged in the outer pipe, and an annular gas distribution channel is formed between the slag guide pipe and the outer pipe and communicated with the gas inlet. And the bottom of the slag guide pipe is provided with a slag suction port, and a slag guide channel is formed in the slag guide pipe. The air distribution power mechanism comprises an air supply machine and an air distribution piston, and the piston slides in the annular air distribution channel in a reciprocating mode. The drill bit is connected with the outer pipe and used for crushing rock strata, and an inner shell and the flow guide cover form an annular cavity. The flow guide cover is provided with a gas distribution nozzle, and the spraying direction corresponds to the slag suction opening. And the drilling cutting conveying mechanism is arranged in the slag guide channel, axially extends and is used for conveying the drilling cuttings to the earth surface. The invention aims to solve the problem that rock debris is easy to retain in a slag guide channel in the existing reverse circulation drilling technology.

The invention relates to a method (50) comprising the steps of: - using a sensor to acquire (110) an image of the sample composed of grains; - applying (120), to the image (1), a convolutional neural network in order to obtain a contour map (C) associating, with each pixel of the image, a value equal to one unit when that pixel belongs to a contour of a grain and otherwise equal to zero; - applying (130), to the contour map (C), a segmentation algorithm in order to obtain a segmented image (S) comprising a plurality of regions, one region being separated from a neighbouring region by a contour having a thickness of a single pixel; and - applying (140), to the segmented image (S), one or more geometric processing operations in order to calculate physical quantities for each grain so as to characterise the lithology of the sample (3).

Systems and methods are provided for imaging drill cuttings, which employ a UV source including a UV LED, which is configured to illuminate a sample volume with UV radiation that interacts with oil-bearing cuttings to cause fluorescence emission. A camera system is configured to capture at least one image of the cuttings based on fluorescence emission. In another aspect, methods are provided for characterizing oil content in drill cuttings that involve capturing at least one WE image of the cuttings illuminated by white light, capturing at least one UV image of the cuttings based on fluorescence emission from UV radiation, processing the at least one WE image to determine a first pixel count for all cuttings, processing the at least one UV image to determine a second pixel count for oil-bearing cuttings, and determining a parameter representing oil content of the cuttings based on the first and second pixel counts.

The invention discloses a coal mine underground rotary drilling formation lithology intelligent identification method, which is based on an intelligent drilling machine, a CSTT system and a mining drilling visual measuring instrument, and is characterized in that the intelligent drilling machine and the CSTT system cooperate in a drilling construction process to automatically collect a drilling cutting image sample; remeasuring the drill holes by a drill hole multi-parameter measuring device to obtain stratum lithology data, and forming a model training data set; a set learning method is adopted to train and form a drilling cuttings lithology identification model based on the drilling cuttings image; in the normal construction stage, the trained model is integrated into a drilling machine control system, collected drilling cuttings images are detected in real time, and real-time recognition of the lithology of the drilling cuttings and the proportions of the drilling cuttings with the different lithology is achieved. According to the method, the consistency of the drilling cutting image acquisition environment, acquisition time and acquisition process is ensured, the lithology identification precision is improved, and automatic calculation of different lithology drilling cutting proportions is realized; and data and equipment support is provided for intelligent sensing of stratum information and a self-adaptive drilling technology in the drilling construction process.

The invention discloses a drilling fluid waste liquid continuous purification treatment device which comprises a drilling cutting screening mechanism with a first solid material discharge port, a second solid material discharge port and a liquid discharge port, the inlet end of a drilling cutting discharge component is communicated with the first solid material discharge port, the inlet end of an extrusion type dehydration mechanism is communicated with the second solid material discharge port, and the outlet end of the extrusion type dehydration mechanism is communicated with the liquid discharge port. The inlet end of the multi-stage drawer type purification mechanism is communicated with the liquid outlet, and an adjustable material stirring mechanism is arranged at the inlet end of the drilling cutting screening mechanism. According to the invention, the investment cost of equipment can be effectively reduced, the convenience of transportation, transfer, installation, maintenance and the like is improved, solids and harmful substances in waste liquid can be removed step by step, so that the whole purification treatment process is in a continuous state, the purification treatment efficiency is improved, the solids and harmful substances are harmlessly treated according to requirements, and the environmental pollution is reduced. And the condition of environmental pollution is avoided. The method is suitable for the technical field of drilling fluid waste liquid in well drilling.

The invention belongs to the technical field of robots, and discloses an intelligent drilling cutting method monitoring robot and a rock burst danger early warning method. The robot collects motor parameter information in real time in the drilling cutting implementation process, a motor drill jamming and suction prediction model is established, drill jamming and suction risks are predicted through comprehensive decision, misjudgment caused by stratum changes or sensor noise is prevented, meanwhile, the drill carriage performance detection function is achieved, the drill carriage performance is evaluated according to parameters, and the drilling efficiency is improved. The working state and maintenance suggestions of the current drill carriage are given; according to the method, a self-developed intelligent drilling cutting method monitoring robot is adopted. Based on a drilling cutting method principle and a powder drilling rate index, fitting is carried out on the drill rod thrust and the drill rod torque through the pulverized coal amount, and critical indexes of the drill rod thrust and the drill rod torque are determined. Full-automatic drilling and collecting in the drilling cutting method construction process are achieved, rock burst dangerousness is monitored according to multiple parameter indexes, reliability is high, and the response speed is high.

The invention discloses a dust removal and slag return dust monitoring response system matched with broken soft coal bed pneumatic directional drilling. The dust removal and slag return dust monitoring response system comprises a matched dust removal device and a slag return dust monitoring system. The matched dust removal device comprises an orifice atomization generation unit, an orifice interference negative pressure pre-pumping unit and a two-stage dust removal unit. The returned slag dust monitoring system comprises an orifice returned slag metering unit and a dust concentration monitoring unit; the orifice atomization generation unit atomizes water and then sends the atomized water to the bottom of the orifice along with high-pressure gas to aggregate dust into particles easy to settle and discharge the particles, and orifice slag-carrying return air is completely sucked into the two-stage dust removal unit by the orifice interference negative pressure pre-pumping unit to remove dust; the orifice slag return metering unit feeds back and adjusts the atomized water amount, and the dust concentration monitoring unit feeds back and adjusts the working parameters of the dust removal unit. According to the invention, dual treatment inside and outside the hole and dust removal effect monitoring are carried out on dust generated by broken soft coal bed gas dynamic directional drilling, working parameters of the dust removal unit are fed back and adjusted, and the dust removal effect is improved on the premise of ensuring normal return of drilling slag in the hole and safe drilling.

An automatic drilling machine for brake pad steel backing includes a drilling device, a base, a position adjustment device, a steel backing support device, and a material conveying device. The drilling device includes a central shaft, a support frame, a moving frame, a guide cylinder, and a linkage mechanism. The support frame is moved by the position adjustment device. The central shaft is slidably and rotatably mounted on the support frame, and a drill bit is fixedly mounted at the front end of the central shaft. The moving frame is slidably and rotatably mounted on the support frame, and a plurality of flip plates are rotatably and elastically mounted at the front end of the moving frame. A cleaning brush is fixedly mounted on the inner side of the flip plate, and a guide groove connecting the inner and outer sides is provided. The guide cylinder is slidably and elastically mounted on the support frame through a guide cylinder mounting frame, and an inlet communicating with a coolant pipe is provided on the guide cylinder, and a guide groove is fixedly mounted thereon. A cutting blade mounting ring is rotatably mounted inside the guide cylinder, and a plurality of cutting blades are fixedly mounted on the cutting blade mounting ring. This invention can effectively guide the flow direction of the coolant and cut long drill chips into small segments during drilling.

In a hand-held power tool, in particular a drill, comprising a housing (110) and at least one drive motor arranged in the housing (110) for driving an output shaft (140), which has a tool holder (142) for an insert tool, wherein the output shaft (140) has a tubular transport section (144) for transporting away dust and / or drilling particles occurring during machining, and wherein, in its end region (299) close to the drive motor (120), the tubular transport section (144) is formed for discharging dust and / or drilling particles away from the output shaft (140). The output shaft (140) has, in the end region (299) of the tubular transport section (144) in a circumferential direction (202), a first plurality of recesses (213) and a second plurality of recesses (214) for discharging the dust and / or drilling particles away from the tubular transport section (144), and the first and second plurality of recesses (213, 214) are spaced apart from one another in the longitudinal direction (201) of the output shaft (140).

The invention provides a kind of pile foundation construction platform.The pile foundation construction platform includes soil layer;Platform main body, the inside of the soil layer is embedded the casing, and the surface of the soil layer pours the concrete layer, the surface of the concrete layer is equipped with a plurality of circular table shape the groove;Cleaning mechanism;The top end of the fixed cylinder is installed for driving the fixed shaft rotation motor, the side wall of the fixed shaft is installed for excluding sewage turbine, for pushing sewage to rise the fan blade, for crushing drill cuttings the crushing rod and for preventing drill cuttings accumulation the rotating plate;Adjusting mechanism, the support net and the side wall of the fixed cylinder are slidingly connected cylindrical scraper;Reinforcing mechanism, the reinforcing mechanism is rotatably connected the second fixed plate;Driving mechanism;Enclosure mechanism.The pile foundation construction platform provided by the present application has the advantages of effectively preventing pipeline blockage, quickly discharging mud, increasing the stability of soil layer around the borehole.

Systems, methods, and apparatus for producing wellbore fluids using drill cuttings, geopolymers, and / or mine tailings, and compositions relating to the same are disclosed. The drill cuttings, geopolymers, and / or mine tailings may be used to create appropriate wellbore fluids to be used in wellbore fluid supply systems, such as spacer fluids, lead barrier fluids, tail barrier fluids. In one embodiment, the wellbore fluids result in one or more substantially impermeable barrier sheaths within the wellbore, which barrier sheaths may be cementitious or non-cementitious.

The present application relates to geotechnical engineering technical field, specifically to a kind of slope stabilizing mechanism and its construction technology, wherein, the slope stabilizing mechanism includes moving assembly, moving assembly includes expansion part and drive structure.Expansion part has the contraction state along the radial contraction of anchor rod and the expansion state along the radial expansion of anchor rod.Drive structure drives expansion part to move on anchor rod axially, and control expansion part switches between contraction state and expansion state.When expansion part is in expansion state and moves along anchor rod axially, the hole wall of drilling can be continuously wiped, the low-intensity, low-permeability mud skin structure formed on the surface of drilling hole wall due to drilling construction is broken, the loose drill cuttings and collapse on the surface of hole wall are removed, so that the surface roughness of drilling hole wall is improved, and then the interfacial bond strength between drilling hole wall and grouting body is enhanced, to avoid mud skin, drill cuttings and other impurities to hinder the effective combination of grouting body and hole wall.

The present invention relates to the technical field of waste treatment, and provides a co-treatment system and method for oil-based drill cuttings and red mud waste, mainly including: a mixing device, a forming device, a pyrolysis device, a coke quenching device and a screening device connected in sequence. The mixing device is used to obtain a mixture of oil-based drill cuttings and red mud; the forming device is used to form the mixture into pyrolysis raw materials; the pyrolysis device is used to pyrolyze the pyrolysis raw materials to generate pyrolysis solid-phase products; the coke quenching device is used to cool down the pyrolysis solid-phase products; the screening device is used to screen the cooled pyrolysis solid-phase products to obtain granular pyrolysis solid-phase products, and the pyrolysis solid-phase products are red mud drill cuttings-based iron-carbon materials. The present invention realizes the co-treatment of two kinds of wastes, namely oil-based drill cuttings and red mud, achieves the purpose of treating waste with waste, and has the characteristics of simple operation, stable and reliable, energy-saving and environmental protection, etc.

Systems, methods, and apparatus for producing coated drill cuttings and for producing wellbore fluids using coated drill cuttings, and compositions relating to the same are disclosed. The coated drill cuttings may be used to create appropriate wellbore fluids to be used in wellbore fluid supply systems, such as spacer fluids, lead barrier fluids, tail barrier fluids. In one embodiment, the wellbore fluids result in one or more substantially impermeable barrier sheaths within the wellbore, which barrier sheaths may be cementitious or non-cementitious.

The utility model relates to the technical field of drilling equipment, and discloses an oil field drilling fluid impurity filter which comprises a rotating rod and a drill bit, the outer wall of the bottom end of the rotating rod is in threaded connection with a plurality of first bolts, the outer wall of the top end of the rotating rod is connected with a liquid drainage pipe through a liquid drainage set so that the rotating rod can drain liquid, and the inner wall of the drill bit is fixedly connected with an inner shell plate. The inner wall of the top end of the inner shell plate is connected with a rotating rod through a moving set so as to block stone entering from the drill bit, the outer walls of the upper end and the lower end of the rotating rod are rotationally connected with connecting rings, and the outer walls of the connecting rings are connected with blocking plates through protection sets so that the blocking plates can be opened outwards. According to the sand scraping device, the effects that too large drilling cuttings are prevented from entering the filter screen through opening and closing of the blocking plate, the filter screen is prevented from being damaged by the drilling cuttings are achieved, and the effect that the sand scraping rod cleans the small drilling cuttings blocked in the filter screen through the transmission rod is achieved.

A method for evaluating a multiphase fluid includes adding the multiphase fluid to an annular volume of a test apparatus, the test apparatus including an inner cylinder deployed in an outer cylinder thereby defining the annular volume. The inner and outer cylinders are configured to rotate independently with respect to one another. The method further includes rotating at least one of the inner and outer cylinders after adding the multiphase fluid to the annular volume to simulate desired flow conditions in the annular volume. The method still further includes removing the multiphase fluid from the annular volume after rotating and evaluating at least one physical property of the removed multiphase fluid.