8results about How to "Increase drainage area" patented technology

The present invention discloses a method for secondary diversion volume fracturing of horizontal seams and its application, the method comprising: injecting small-size ultra-low-density proppants to seal the seam ends to complete a primary diversion in the horizontal seam, then injecting small-size low-density proppants to fill the horizontal seams for secondary diversion, and then injecting fracturing fluid to fully extend the vertical seams. The present invention forms vertical seams on the basis of horizontal seams and effectively extends them, thereby increasing the overall transformation volume of the fractures, and completing a complex fracture network in which horizontal and vertical seams coexist through repeated operations. The fracture parameters and construction parameters are optimized and designed through reservoir numerical simulation and fracture extension simulation software, and the addition methods of fracturing fluids with different viscosities and proppants with different particle sizes are optimized, so as to finally form a complex fracture network with good conductivity, thereby improving the effects of post-fracturing production increase and stable production.

The application discloses a glaucoma drainage device and belongs to the technical field of medical devices. The glaucoma drainage device comprises a drainage sheet, the inside of which is a cavity structure, the drainage sheet is divided into a left cavity and a right cavity through a first partition plate, the upper surface of the left cavity is provided with a drainage hole, and the first partition plate is provided with a drainage opening; a drainage assembly is in communication with the inside of the drainage sheet through a connecting hole provided on the drainage sheet; and a fixing mechanism is arranged on the drainage sheet and used for fixing the drainage sheet and the drainage assembly. The glaucoma drainage device can fix the drainage assembly and the drainage sheet of the device through a mechanical fixing structure, avoids the problems of the suture fixation of the drainage device in the prior art, simplifies the operation process, shortens the operation time, reduces the complications caused by the suture foreign matter, and improves the fixing reliability and safety.

This invention discloses a method for producing low-temperature resistant plastic granules for pipes, comprising the following steps: Step 1, cleaning the waste material, and then adding the raw material to a high-speed mixer to obtain a premix; Step 2, adding the premix to a twin-screw extruder and heating it to a molten state for plasticization. This invention relates to the field of plastic granule preparation technology. In this method for producing low-temperature resistant plastic granules for pipes, wastewater is discharged into a circulation tank, driving a turbulence impeller to rotate. While the wastewater is filtered through a grading filter plate, a scraper removes dirt from the surface of the grading filter plate, preventing clogging. Furthermore, the drainage area of ​​the drainage channel can be increased by adjusting the water flow, increasing the water pressure and the impact force on the turbulence impeller, thus increasing the thrust on the scraper and improving the cleaning effect.

This invention discloses a gallbladder drainage stent for ERCP surgery, comprising an insertion tube, several sets of connecting ribs fixedly connected to the outside of the insertion tube, a communicating groove opened on the outside of the connecting ribs, several sets of rotating plates rotatably connected inside the communicating groove, a rotating block rotatably connected to the inner side of the outer end of the rotating plate, a support plate fixedly connected to the outside of the rotating block in the same group, sliding rods slidably connected to the inside of both sides of the support plate, contact plates fixedly connected to the outside of the sliding rods, several sets of connecting tubes fixedly connected between the contact plates, a through tube fixedly connected between the middle of the connecting tube and the inside of the insertion tube, and a fluid inlet opened on the outside of the connecting tube. The entire stent can be deployed and anchored with only one action, making the operation simple and quick, significantly shortening the operation time, reducing surgical risks and patient suffering.

The utility model provides a graded drainage structure of a multi-stage safety injection pump, and relates to the technical field of nuclear power pumps. The graded drainage structure of the multi-stage safety injection pump comprises a pump cylinder, a center shaft, a suction section, multi-stage impellers and multi-stage middle sections, the center shaft is rotatably installed on the pump cylinder, and the center shaft is sleeved with the multi-stage impellers; the multiple middle sections are sequentially connected, and the suction section is connected with the first middle section in the multiple middle sections. The pump barrel is provided with a suction cavity corresponding to the suction section and an outlet cavity corresponding to the last-stage impeller in the multiple stages of impellers, the suction cavity is provided with a first drainage pipe set, and the outlet cavity is provided with a second drainage pipe set. By means of the design of the drainage structure, the drainage efficiency of water in the pump can be improved, water in the pump body can be drained more thoroughly, little waste water is left in the pump body, the follow-up detection work difficulty is lowered, and the overhaul work risk is lowered.

The present invention discloses a waste liquid purification device for silicone resin production, and relates to the technical field of waste liquid purification. The present invention includes a device body, a driving assembly is arranged on the outer wall of the device body, a drain pipe is arranged on the bottom of the device body, an electric telescopic rotating column is rotatably installed at the center of the top of the inner wall of the device body, and an arc groove is opened on the outer wall of the electric telescopic rotating column, an I-shaped disk is fixedly installed at the bottom of the telescopic end of the electric telescopic rotating column, and the central axis of the I-shaped disk is designed to slide through, an arc sheet is fixedly installed at the inner edge of the I-shaped disk, a filter plate is fixedly installed on the outer wall of the telescopic end of the electric telescopic rotating column, and an anti-winding device for preventing silk thread-like dirt from winding in the waste liquid is arranged on the periphery of the electric telescopic rotating column. The present invention enables the telescopic end of the electric telescopic rotating column to drive the filter plate to move synchronously, so as to avoid the accumulation of dirt caused by the long-term erosion of dirty water on the filter plate, and prevent the local area of ​​the filter plate from being easily blocked, thereby reducing the filtering effect on sewage.

The utility model discloses a high weatherability's windowsill drainage board structure, including drainage unit, and the drainage bayonet groove of recessing inwards is equipped with to the window frame and is located outdoor one side, and the drainage bayonet groove is located below the water passage hole of window frame, and its inner top wall is equipped with L type buckle, and one end of drainage unit is through L type buckle and is connected with the drainage bayonet groove, and its other end extends to the outside of outer wall veneer, and its bottom end sets along the top end surface of outer wall veneer to reach the purpose of drainage. The utility model discloses a high weatherability's windowsill drainage board structure, and this drainage board structure adopts physical structure and is connected with window frame to solve the leakage caused by the high dependence on sealant in the prior art, prevent after sealant aging, and the drainage area that can be used is increased by the slope surface of the top of this drainage board structure to the water diversion, thereby making drainage more smooth and improving drainage capacity, and this drainage board structure does not need to use screw and other fasteners to fix, thereby reducing the difficulty of installation.

The invention discloses a sand adding method for a multi-layer sandstone bottom water gas reservoir and an application thereof. The method combines processes such as fracture control high-pressure fracturing, bottom plugging and proppant combination, and adopts a novel temperature-sensitive fracturing fluid, which can not only fully open each reservoir but also control the fracture to extend downward, and can optimize the fracture profile, so that the fracture height profile of the fracture near the wellbore position and the fracture front end is almost the same, thereby expanding the fracture leakage area; on the basis of adopting different density proppant combinations and different viscosity fracturing fluid combinations to achieve effective plugging of the fracture bottom, the effective laying of the proppant is improved, the fracture conductivity is improved, and the purpose of controlling water and increasing production of the multi-layer sandstone bottom water gas reservoir is achieved.