1. Scope
Model DYFZ-A mechanical stage tool is a special tool used to complete the cementing operation in two times. Mainly used in the following circumstances.
1.1. Excessive injection of cement at one shot.
1.2. The formation cannot bear the gigantic fluid pressure.
1.3. Packoff special strata.
1.4. Avoid the occurrence of annual air channeling after the cementing job.
1.5. The considerable temperature difference between the upper and lower section makes it rather difficult to adjust the slurry performance.
1.6. Two-stage cementing for deviated and horizontal wells
2. Structure
Model DYFZ-A mechanical stage tool mainly consists of two-stage coupling (body), shut-off baffle, first-stage plug, Free-fall opening plug and closing plug
1. An anti-rotation device is specially developed to prevent the synchronous rotation of closing sleeve and bits.
2. A particular structure is developed to prevent the possible pre-shutoff of closing sleeve.
3. In the closing sleeve of closed circulation hole, close the locking mechanism to prevent closure put on the back, to achieve permanent closure.
4. All accessories, made from premium quality rubber or aluminum material, have very good anti-rotating mechanism that makes drillout easy.
5. Free-fall opening plug and pumping-down opening plug are available to realize mechanical opening.
6. The ID. of upper/lower sub should be the same as that of casing, but smaller than that of closing sleeve, which protects the clos
Specifications(in),7"
Opening�Pressure(Mpa),7
Closing�Pressure(Mpa),5.5
Sealing�Capacity(Mpa),,25
Rated�Load(t),180
Connection�Thread,API�7"
Max.�OD.�(mm),208
Drill-out�ID.�(mm),157
Overall�Length�(mm),990
Length�of�first-stage�plug�(mm),320
Length�of�closing�plug�(mm),280
O-rings
Oil seals
Mechanical-Seals
Carbon-Seals
Encapsulated-Seals
Sintered and finish tungsten rings: Materials: virgin cemented carbide, tungsten carbide alloy and nonmetal Used in geological prospecting, machinery/tool manufacturing and serves as drill bit in wind drill and electric drills for coal digging Fit for precision lathe are used in nonstop cutting of die-cast iron Semi-precision, precision, and small-section precision lathes are used in interrupted cutting and whirling of rough turn; The grade, performance and application of carbide alloy. Pp bag, then carton or as special requirement.
Sintered and finish Tungsten rings: Materials: virgin cemented carbide, tungsten carbide alloy and nonmetal. Used in geological prospecting, machinery/tool manufacturing and serves as drill bit in wind drill and electric drills for coal digging •Fit for precision lathe are used in nonstop cutting of die-cast iron •Semi-precision, precision, and small-section precision lathes are used in interrupted cutting and whirling of rough turn; The grade, performance and application of carbide alloy. PP bag, then in carton or as special requirement.
mechanical seal A108-45 Is to use the generator sets of professional power plant supporting model products. main generator accessories, generator sets of accessories. For decades, the company for hundreds of thermal power plants, hydropower stations, cement plants, coal gangue power plants, metallurgical companies, steel and other overhaul, technical transformation to provide a reasonable and excellent equipment selection, construction planning, installation commission, after-sales service Perfect complete service, won the power industry industry wide acclaim. can offer many spare parts for power plants as below: DF-mechanical seal A108-45-DF globe check Throttling valve LJC10-16 DDV valve D634-327C piston pumps A10VSO28DFR1/31R-PPA12N00 Oil retainer FA1B56-A2-102761A vacuum pump WSRP-30 axial piston pumps A3H37-F-R-01KK-10 Angle joint EW-L06-SS centrifugal pump suction DFB125-80-260 electric oil transfer pump 65AY50 9 centrifugal pump stainless steel DFB80-50-240 three screw pump NM031BY01L06B pressure hose S100-AC-AL-0030 Servo valve DHZ0-TE-071-S5-40 Manual test valve cod.224.32.9.1/1x PMAX 10bar,tf -5+70 pump mechanical seal 104-45 mechanical seal DZXB870-R67 butterfly valve 80DSF4PB3 flexible shaft coupling 125LY-32 mechanical seal parts BKMFX108A Mechanical seal ZU44-45 roots vacuum pump M01225 MECHANICAL SEAL-N.D.E L270/102 fluid transfer pump 65AYP50X7 liquid ring vacuum pump P-1764-1 mechanical seal A108-45 pump coupling 125LY-23-6 mechanical seal parts 10014CH1-5008 RSV2 trip solenoid valve Q223JO-L10 stainless steel globe valve (flange) 150FJ-1.6PA2 EH oil filtration pump C9202024/F3.SDV10 AST solenoid valve GS061600V+CCP115D AST solenoid valve HQ16.50Z mechanic seal water pump G50 Globe valve J41H-40DN32 trip globe valve SHV6 solenoid valve 4WE6D-50/AG24NZ4 piston pump parts PV292R10C02 mechanical seal for pump 24SAP-28 centrifugal pump parts CZ80-250A switch valve M765-008000A high pressure piston pump PVH74QIC-RSM-IS-10-C25-31 jacking oil pump 25CCY14-1B piston pump parts PVM074ER10GS02AAA28000000A0A thrust collar nut FK5G32-03-11 impellersealing ring 125LY-35 hydraulic screw pump HSNH4400Z-46NZ o-ring 575X5.3 Cartridge valve CV1-NG25-D20 oil transfer pump DLZB820-R67 sealing ring HB4-56J8-142 mechanical seal parts 108-45 DTC/STC/HTC AST/OPC solenoid valve CCP115M 115VDC 19W PAT5002253 O ring HY.SO.0018.V vacuum pump ac 125LY-31-6 mechanical seal A108-45 DFYL-2023-2-7-ZYR
Single end face seal Balance type No requirement for rotating direction Complying with DIN24960 H7N mechanical seal is widely used, logically designed and good in interchangeability of parts, allowing easy insertion of the seal ring and easy replacement. The throw out collar is retained by the drive eye to prevent the spring from falling off.
