48results about How to "Improve sand washing effect" patented technology

The invention relates to a multi-formation fracturing technology of oil, oil wells of gas fields, gas wells or water injection wells, in particular to a multi-formation fracturing device and a process of a release tubular column. The device at least comprises a sliding sleeve seat, a sand ejector, a stage oil pipe, packers, a release joint and an oil conveying pipe, wherein the sand ejector is connected with the sliding sleeve seat through threads and positioned on the sliding sleeve seat; the sand ejector is also connected with the packers through an oil pipe in the middle to form a layer offracturing tubular columns; the packer of the tubular columns on a front layer and the packer of the tubular columns on a rear layer are connected through threads and positioned on the packer of a forward stage; and the packer of a backward stage is connected with the release joint and then connected with the oil conveying pipe through the release joint. The process flow of the invention is completed through eleven steps, thereby realizing the continuous fracturing operations of multiple oil and gas formations of a slim hole and a horizontal well.

The invention discloses an environment-friendly polyester fabric sand washing dyeing process. A one bath process is selected to dye polyester fiber, dyeing and sand washing are completed by one time, at the same time anhydrous sodium sulphate and other inorganic salts are unnecessary, thus reaching environmental protection and energy saving effects; marble sandstones are selected for sand washing, firstly, the polyester surface can be ground to enhance the dyeing effect, secondly the fabric seems to have a natural and friendly dyeing effect, and thirdly only through simple pickling of the fabric in follow-up treatment, the harm of tiny granules to the human body can be eliminated. And by using plant dyes, the process is environment-friendly and healthy. The environment-friendly polyester fabric sand washing dyeing process provided by the invention is a healthy, environment-friendly and energy-saving novel dyeing process.

The invention discloses a sand washing device for a filtration system. The sand washing device comprises a device body, a shell, a stirring shaft, a driven gear, a motor, a fan, a bulge and a sand washer main body. The shell is arranged at one end of the device body. The sand washing device is scientific and reasonable in structure, by arranging the motor and the fan, the motor is started to drivea rotating shaft to rotate, the stirring shaft drives stirring blades to stir sand, meanwhile, the fan blows air into an aerator pipe, the aerator pipe outwards blows the air, thus dirt in the sand is upwards floated along with stirring, the dirt or the dirty sand enters the sand washer main body and is spirally stirred through an internal spiral blade when passing through a sand washing channel,and the sand is mutually rubbed to remove the dirt; and compared with traditional modes that the dirt is removed only through friction between the sand and meanwhile the sand washing channel is proneto being blocked, the stirring shaft rotates to enable the spiral blade to rotate to increase friction between the sand, and the sand is effectively prevented from blocking the sand washing channel while the dirt is removed.

The invention provides a two-way passageway check valve and a method for conducting sand-flushing through the two-way passageway check valve. The two-way passageway check valve is connected between a rotating jetting sand flushing device and an oil pipe. An upper connector used for being connected with the rotating jetting sand flushing device is arranged at the upper end of the two-way passageway check valve, and a lower connector used for being connected with the oil pipe is arranged at the lower end of the two-way passageway check valve. A diversion passageway is arranged in the upper connector. A forward passageway is arranged at the inner upper end of the lower connector, and a reverse passageway is arranged in the inner lower end of the lower connector. A valve ball and a spring are arranged in the reverse passageway. Compared with an existing liquid backflow passageway oil sleeve annulus, the passageway section is obviously narrowed, the liquid backflow speed is obviously increased, the liquid backflow speed is effectively increased under the condition of the same delivery capacity, the shaft sand grain suspension and backflow of a horizontal well section are facilitated, and the horizontal wall sand flushing effect is improved.

The invention discloses a two-stage vertical type sand washer. The two-stage vertical type sand washer comprises a barrel body, sand washing systems and driving systems, the barrel body adopts a vertical barrel type structure and comprises a primary stirring barrel and a secondary stirring barrel, an opening is arranged between the primary stirring barrel and the secondary stirring barrel, the primary stirring barrel is provided with a material inlet, the secondary stirring barrel is provided with a material outlet, the primary stirring barrel and the secondary stirring barrel are both internally provided with one sand washing system, the sand washing systems adopt blade type sand washing mechanisms, each sand washing system comprises a main shaft, vertical sand washing blades and inclinedsand washing blades, and the main shafts are rotatably connected with the corresponding primary stirring barrel and secondary stirring barrel. According to the two-stage vertical type sand washer, the blade type sand washing mechanisms of the vertical sand washing blades and the inclined sand washing blades are adopted, no damage is caused to sand, the barrel body adopts the vertical barrel typestructure, the two-stage vertical type sand washer is compact in structure, the installation space is saved, with the help of the flow characteristic of flow liquid, water can drive the sand to flow together under the action of the inclined sand washing blades, and energy sources are saved.

The invention relates to a continuous positive and negative sand washing device for an oil-water well, in particular to a continuous positive and negative integrated sand washing device for an oil well. The device consists of an operation machine, pipelines, a sand washing pipe, an elevator, a pump truck and the like, wherein a self-sealing wellhead is arranged at the upper end of a big four-way joint of the wellhead; the lower end of a sand washing pipe column is provided with a sand washer, and the upper end of the sand washing pipe column is provided with a reversing valve; the sand washing pipe column enters a well casing under the well through the self-sealing wellhead and the big four-way joint; a three-way valve is connected with a water hose and the self-sealing wellhead and is connected with a positive and negative sand washing regulation and control valve bank; the positive and negative sand washing regulation and control valve bank is in threaded connection with the pipelines respectively connected onto the pump truck, a foul solution cylinder, the three-way valve and the big four-way joint; the three-way valve realizes continuous sand washing operation in the process of carrying out continuous single-length sand washing and carrying out subsequent single-length sand washing by cooperation of the opening and closing of pairs of pipe lines with the reversing valve and the self-sealing wellhead; and the positive and negative sand washing regulation and control valve bank completes conversion by adjusting and aligning with four holes which are vertical in pairs on a valve core and eight holes on a valve body, so that the positive and negative continuous sand washing operation is realized.

The invention discloses a water-saving type petroleum geology logging and sand-washing device, which comprises a base, a water tank, a sieve plate, a conveyor belt, a first cleaning tank, a second cleaning tank and a support. A feed hopper is arranged on the upper end of the support; the sieve plate is arranged on the lower end of the feed hopper; the water tank is arranged on the inner side of the support; a water holding tank is arranged on the upper end of the water tank; the conveyor belt is arranged on the right side of the sieve plate; the first cleaning tank is arranged on the right side of the conveyor belt; a rolling wheel is arranged in the first cleaning tank; the second cleaning tank is arranged on the right side of the first cleaning tank; a sliding rail is arranged on the bottom part of the second cleaning tank; a sliding block is slidably connected into the sliding rail; and the upper end of the sliding block is fixedly connected with a cleaning barrel. Through setting amulti-stage sand-washing process, a favorable sand washing effect is achieved, an automation degree is high, the manpower is reduced, meanwhile, the problem that real cuttings run away due to an improper manual sand-washing method is solved, a water resource is recycled so as to be saved, and the practicability is high.

The invention discloses a sand washing device for geological logging and relates to the technical field of oil field logging equipment. The device comprises a mounting base, a sand washing pool whichis arranged on the mounting base and a sand washing tank which is located in the sand washing pool, a cover plate is fixedly arranged on the sand washing pool, and a fixing base is detachably connected onto the cover plate; a driving component is arranged on the fixing base, a transmission rod is connected to the driving component, and one end of the transmission rod is fixedly connected with theoutput end of the driving component; the other end of the transmission rod penetrates through the fixing base and is rotatably connected with the cover plate and the bottom of the sand washing pool, the transmission rod penetrates through the sand washing tank and is fixedly connected with the top and the bottom of the sand washing tank respectively, and a bearing plate is fixedly arranged on thetransmission rod; the bearing plate is fixedly connected with the bottom of the sand washing tank, and strengthening connection plates which are used for strengthening and supporting the bearing plateare fixedly connected with the tail end of the transmission rod. According to the sand washing device, the driving component drives the sand washing tank to rotate in the sand washing pool which contains clear water, so that rock debris in the sand washing tank is separated from slurry mixtures, the aim of sand washing is achieved, and the effect of sand washing is ideal.

The invention belongs to the technical field of dyeing and finishing of fabrics and relates to a method and application of dyeing and finishing of pure cotton fabrics. The cotton fabric dyeing and finishing method comprises pretreatment, dyeing and post-treatment. The dye used in the dyeing process is an s-triazine-type reactive dye. The post-treatment process orderly comprises sand washing, waterwashing, softening treatment, dehydration and drying. In the sand washing process, a mixture of sodium metasilicate and sodium bicarbonate is used as a sand washing aid, the sand washing operation iscarried out at 95-100 DEG C for 15-25 DEG C, the fabric is cooled to 35-45 DEG C and then is subjected to sand washing for 30-50min, the washing solution is discharged and the fabric is washed by water. The softening treatment process utilizes a softening agent comprising a mixture of polyurethane and epoxy modified silicone resin. The method can improve the production efficiency, reduce the generation of the defective cloth, can also produce soft and fluffy peach skin fuzzy feeling on the cloth surface, and has a natural wrinkle and antique effect.

The embodiment of the invention discloses a sand washing pipe column and a sand washing method, the sand washing pipe column comprises a liquid flow reverser and a cyclone, and the lower end of the liquid flow reverser is connected with the cyclone. A descending channel for sand washing liquid to pass through and an ascending channel for returned liquid to pass through are formed in the liquid flow reverser. The upper part of the descending channel is communicated with an external space through a first opening in the side surface of the liquid flow reverser, and the lower part of the descending channel is communicated with a flow channel in the cyclone. An opening is formed in the lower part of the ascending channel. The cyclone is configured to convert the sand washing liquid flowing outof the descending channel from linear flow into rotational flow. The liquid flow reverser further comprises a blocking device, and the blocking device is located on the outer side of the sand washingpipe column and arranged to divide an annular space between sleeves into which the sand washing pipe column descends into an upper space and a lower space. The upper space is communicated with the descending channel.

The invention discloses a sand washing machine with an automatic feeding function. The sand washing machine with the automatic feeding function comprises a sand washing tank. The two sides of the sandwashing tank are connected with moving platforms, a plurality of sliding guide rails which are arranged in parallel are arranged on the side walls of the moving platforms, and guide rail sliding strips which are matched with the sliding guide rails are arranged on the side wall of the sand washing tank. A fixed support is arranged on the outer side of the sand washing tank, a movable support is arranged on the fixed support, and an electric-hydraulic push rod which is connected with the movable support is arranged on the fixed support. A sand entering plate is connected with the sand enteringend of the sand washing tank and connected with a feeding device. The feeding device comprises an outer barrel. An inner barrel is arranged in the outer barrel in a sleeved mode, a lifting device isarranged at the bottom of the inner barrel and connected with a lifting plate, and the lifting plate is connected with a conical platform through a rotating platform. A plurality of through holes areuniformly distributed in the side wall of the inner barrel, a mounting platform is arranged on one side of the outer barrel, and a V-shaped baffle is arranged on the mounting platform. A barrel body of the inner barrel is higher than a barrel body of the outer barrel. The sand washing machine with the automatic feeding function has the advantages of being high in feeding efficiency and good in sand washing effect.

The invention discloses a cross-linkable polymer linear colloid system for shale gas fracturing and a preparation method thereof. Through being metered in parts by weight, the polymer linear colloid system comprises 0.3 to 0.5 part of thickening agents, 0.3 to 0.5 part of clay stabilizing agents, 0.3 to 0.5 part of discharge aiding agents, 0.2 to 0.3 part of crosslinking agents and 98.2 to 98.9 parts of flowback fluid. The preparation method comprises the steps of base solution preparation and mixing; the flowback fluid according to the formula ratio is taken; the thickening agents are added; stirring is performed till the dissolution; then, the clay stabilizing agents and the discharge aiding agents according to the formula ratio are added; the mixture is uniformly mixed to prepare base liquid for use; during the fracturing operation, the crosslinking agents in the formula ratio is added into the base liquid; the polymer linear colloid system is obtained. Compared with a low-concentration guar gum system with wide application in the prior art, the linear colloid base liquid prepared in the flowback fluid has the characteristics of high viscosity, crosslinking performance, low friction resistance and good sand washing replacing effect, and has good application prospects.

The invention discloses a double-barrel reverse-flow type environment-friendly sand washer with a recovery function, which comprises a rack, and is characterized in that the upper end of the rack is fixedly connected with a water tank, the water tank is internally and fixedly connected with a support frame, and the support frame is fixedly connected with a double-barrel assembly. The invention relates to the technical field of sand washing and screening equipment, a double-barrel assembly is arranged, a driving motor is used for driving an inner barrel and a spiral plate to rotate, at the moment, the inner barrel is matched with a flow guide plate to drive cleaning water to reversely flow upwards, the spiral plate drives sand and stones to move upwards, under the driving of the flow guide plate, the countercurrent direction of the water flow is inclined upwards, and the gravels move upwards in a spiral mode, so that differential speed is formed between the gravels and the water flow, and the purpose of cleaning and impurity removal of the gravels is achieved.

The invention discloses a sand washing process for a cotton fabric. According to the invention, calcined shell powder is used as a raw material for sand washing of the cotton fabric, so environmental pollution caused by usage of silica in conventional sand washing is avoided, and the antibacterial properties of the cotton fabric can be improved; good sand washing effect is obtained by controlling the porosity, particle size and usage amount of the shell powder during sand washing; and thus, the sand washing process provided by the invention is a novel environment-friendly fabric treating process.

The invention discloses a geological logging sand-washing device, and relates to the technical field of oil field well logging devices. The geological logging sand-washing device comprises an installing base, a sand-washing pool installed on the installing base and a sand-washing box positioned in the sand-washing pool. The sand-washing pool is fixedly provided with a cover plate. The cover plateis detachably connected with a fixing base. The fixing base is provided with a driving component. The driving component is connected with a transmission rod. One end of the transmission rod is fixedlyconnected with the output end of the driving component, and the other end passes through the fixing base and the cover plate and is rotatably connected with the bottom of the sand-washing pool. The transmission rod passes through the sand-washing box and is fixedly connected with the top and the bottom of the sand-washing box. The transmission rod is fixedly provided with a bearing plate. The bottom of the sand-washing box is fixedly connected with the bearing plate. The tail end of the transmission rod is fixedly connected with a reinforcement connecting plate which is used for reinforcing and supporting the bearing plate. The geological logging sand-washing device is capable of, through the driving component, driving the sand-washing box to be rotated in the sand-washing pool loaded with clear water, and enabling rock cuttings in the sand-washing box to be separated from a mud-slurry mixture, thereby achieving a purpose of sand-washing, and perfect in sand-washing effect.

The invention relates to an open-width sand washing machine. The open-width sand washing machine comprises an input end and an output end of a fabric conveying path, the fabric conveying path furthercomprises a high-pressure spraying box for spraying a sample on a fabric in a dry or wet way and a microwave high-frequency electromagnetic box arranged in front of the high-pressure spraying box; themicrowave high-frequency electromagnetic box produces friction through an air medium in a microwave box so as to further rub the fabric, the fabric is opened and a fiber is fluffy; the microwave high-frequency electromagnetic box comprises a microwave cavity and a plurality of unit microwave generator component arrays distributed on various surfaces of the microwave cavity, and the unit microwavegenerator component arrays transmit microwaves to the fabric in the microwave cavity to produce friction. The fabric is opened through the microwave, the production efficiency is high, the product quality is good, and the energy is saved.

The invention discloses a hydraulic tailings taking platform for a tailings reservoir of a mine. The hydraulic tailings taking platform comprises a buoyant platform, a high-pressure pump, hydraulic giants, hydraulic giant fixing lantern rings, hydraulic giant fixing retaining rings, a tailings taking pump, a fixed guiding pile, an instrument operation table, a manual hoist crane, a fixed support,and the like. When tailings taking is carried out in the tailings reservoir, the high-pressure pump on the buoyant platform is started to form a high-pressure water jet; the high-pressure water jet issprayed from circular drilled holes arranged in the hydraulic giants to impact and loosen the tailings of a working surface in the tailings reservoir; the tailings are sucked in from a tailings suction opening of the tailings taking pump and flow out from a tailings outlet of the tailings taking pump to be conveyed to a predetermined position, and thus tailings can be taken from the tailings reservoir. The hydraulic tailings taking platform has the characteristics of being easy to manufacture, high in production efficiency, high in tailings taking capacity and low in cost, and is suitable forresource reuse of most wet tailings reservoirs (ponds) of mines and hydraulic tailings taking of other sites.