1. Introduction The Tahe No.6 oilfield owned by the Northwest Branch of Sinopec Corp. belongs to the heavy oil block. In particular, the refractory reserves in the northwestern part of China are the most typical. The viscosity of crude oil in oil wells is more than 10000mPa · s (50 ℃) Large loss, only rely on formation energy crude oil can not flow to the wellhead. In the early stage, according to the characteristics of the crude oil temperature sensitive in this block, thermal recovery technologies such as thermal cable, heating tubing and over-pump heating were successively tested. The maximum heating power of S711 well (viscosity of 34593 mPa · s at 70 ℃) reached 310 kW and TK6051 well (50 ℃ crude oil viscosity 24500mPa · s) maximum heating power reached 130kW, the oil well is still not able to form a production capacity. Through the summary analysis of thermal recovery technology, the main reason for the failure of thermal recovery technology in the refractory reserves in the northwestern part of the country is that the reservoir depth in this block is large (the reservoir depth is more than 5500m) and the geothermal gradient is low ( 100 meters Wenti 2.2 ℃), loss of wellbore heat loss, at the same time low productivity wells, oil well production is difficult to form a stable temperature field. The mining process of this block is finally located on the oil-dilution oil-reducing technology, which can reduce the fluid density and viscosity of the wellbore at the same time, so as to solve the problem that the wellbore flow friction loss is large. In April 2005, a pioneering experiment was conducted at TK6051 well for a hollow circulating pump compound spike-leaching process that resulted in stable production of 18t / d for a well that had been in operation for a year and for the next step, Oil recovery technology provides a basis for supporting the technology has a good prospect. 2. Basic Features of Reservoirs and Fluids The trap type of Ordovician reservoirs in Tahe No.6 oilfield is trap unconformity carbonate rock karst cave. The heterogeneity of the reservoir is very strong. Generally speaking, the reservoirs in the vertical direction are connected directly by cracks or labyrinthine communication, and the closed reservoirs with hydrocarbon or water are partially controlled by the tight lithology and filling. Longitudinal oil and gas are mainly distributed in karst pores, holes and seams, and are continuously distributed, that is, there is no aquifer in the middle. In the reservoir, the formation pressure is 61.81MPa / 5664m and the pressure coefficient is 1.09, which belongs to the normal pressure system. The reservoir formation temperature is 129.4 ℃ / 5664m and the average geothermal gradient is 2.2 ℃ / 100m. The difficult-to-use reserves in the northwestern part of Tahe No.6 oilfield are affected by the tectonic characteristics, and oil basically belongs to heavy oil and heavy heavy oil. For example, the viscosity of crude oil in Well S711 is 320,000 mPa · s, 112,776 mPa · s, 34,593 mPa · s and 12,357 mPa · s at 50 ° C, 60 ° C, 70 ° C and 80 ° C, respectively; the viscosity of crude oils of well S741 at these temperatures is 8,389 mPa · s, 3699 mPa · s, 1380 mPa · s and 900 mPa · s, respectively; the viscosity of well S661 was 15997 mPa · s6799 mPa · s, 2759 mPa · s and 1620 mPa · s, respectively; TK4331 crude oil viscosity was 16097 mPa · s, 6499 mPa · s, 2819 mPa · s and 1860 mPa · s respectively; TK6051 well crude oil viscosity was 24500 mPa · s, 6800 mPa · s, 3100 mPa · s and 1520 mPa · s, respectively. 3, the hollow circulation pump compound dilute lifting technology The process is directly through the ground water mixing process connected with the water pipe, hot fluid or chemical through the wellhead hanger into the hollow rod hole, the hollow rod through the pump, The lower rod is connected to the hollow circulation pump, the lower pipe can be connected to the pump, and the hollow rod passing through the hollow circulation pump can be lengthened as required and positioned by the sucker rod centralizer, so that the more the fluid is pumped into the lower oil pump pipe, The heavy oil in the tube is well mixed and then pumped to the ground by a hollow circulating pump. Through this process can greatly improve the pump inlet conditions, reduce the viscosity of crude oil, while reducing the stress load sucker rod, to ensure the normal operation of the pump. 4, Hollow Circulation Pump Compound Dilute Lifting Technology April 2005, a typical heavy oil well TK6051 well hollow circulation pump composite doping lifting pilot process. 4.1 Indoor dilute mixed with dilute oil viscosity test was 25.53mPa · s, a density of 0.8836g / cm3, the experimental temperature of 30 ℃. A total of six experiments were conducted. Except for the first group of blank, the first group of the first group of thinning of the 26th group (diluted: thick) were 1: 2,1: 3,1: 4,4: 6,3: Viscosity of 52000mPa · s, the viscosity of Group 26 after doping were 3000mPa · s, 8310mPa · s, 12700mPa · s, 1240mPa · s and 4250mPa · s, respectively. The 26th group had the viscosity reduction rates of 94.2%, 84% and 75.6 %, 97.6% and 91.8%. 4.2 Field Test TK6051 pumping wells mixed with rare technology pump hanging depth 1357m, using Ф57 hollow circulating pump, the theoretical displacement of 41m3 / d, the pump plus a tail pipe; sucker rod using D-level hollow rod, through the Intensity check, using Ф42mm plus Ф36mm two-stage combination, the pole thinning of the depth of 1370m. After the well is dipped into a dilute pump, the well is dipped in a ratio of 4: 6 with a daily dosage of 12t. The daily production of heavy oil is 18t / d, the injection pressure of the ground pump is 1.1-1.2MPa, the wellhead temperature is 33 ℃, Wellhead crude oil viscosity 700 ~ 800mPa · s, pump efficiency 73.2%. The test has achieved good results, enabling the long-term shut down of the special heavy oil wells to achieve normal mining, providing an effective new process for the overall development of heavy oil blocks, providing a new for the development of heavy oil fields at home and abroad Train of thought. 5. Conclusions The successful application of the composite hollow dilute lifting technology in the Tahe No.6 Oilfield concluded that: 1. For composite heavy dilute lift technology of heavy oil and extra heavy oil fields and hollow circulating pump Can solve the problem of heavy oil into the pump, flow resistance, rod strength is not enough and so on, so as to ensure the normal production of heavy oil wells; 2. For the supply of heavy oil wells, through the column combination, the strength of the calculation, the pump Hanging depth can reach 2100m, thus solving the problem of low productivity oil wells; 3. The technology can also be extended to the pump to promote the use of viscosity reducer emulsified viscosity reduction pump doping paraffin inhibitor, the pump doped with inhibitors A process, a comprehensive solution to waxing wells, corrosion, scaling and other issues.
High Speed Door Accessories
About high speed Door Accessories:
1.Driving system: High Speed Door Servo System motor and control, motor SNMA / SEJ +reducer+flang+encoder+control box
2.Other accessories: Middle aluminium bar, bottom aluminium bar, aluminium vertical track, stainless steel vertical track, brushes,round nylon strip, PVC roll, rolling steel tube complete, drum be;;s for rolling tube, side end covers, stainless steel cover, steel tubes, air bag sensor system, safety light beam, Microwave sensor 24 Gigahertz,PVC welding machine, smoke and fire sensors, PVC transparent window, magnetic loop, photocell, remote control, manual push button, sound warning alarm Led lamp traffic light
For some main accessories, here is detain introduction:
1).24G radar sensor:
Brand: Hofic
Technology: Microwave processor
Maintain time: 0.5s
Protection: IP54
Transmitting frequency: 24.125GHz
Maximum installation height: <5meter
Transmitting power density: <5mw/cm2
Power consumption: <1W(VA)
Installation angle: 0-90°(lengthways) -30-30°(crosswise)
Supply voltage: AC&DC 12V-30V
2).Photocell:
Approval CE & ISO9001
Power supply AC/DC 12-30V
Static current 25A
Action current 40mA
Mounting distance Max 10m
NO or NC contact Done by NO./NC. contact selection
Working environment temperature -42℃ to +45℃
Working environment humidity 10 to 90%RH
Appearance dimensions( controller) 123*50*32mm(L*W*H)
Appearance dimensions(Magic eye head) 19*13mm(L*D)
3). Remote control
Operating Voltage: AC220V/50HZ+-20%
Transmit power:≤100mW;Super regenerative module, strong anti-interference
Operating temperature:-30℃-+70℃
Working frequency: 433MHZ;transmitter 1527, millions of encoding chip
Accept sensitivity:≤110dB
Manipulation method: electric remote control
Configure the quantity: Wireless number; factory configuration transmitter two. Can be equipped with PT2272 digital decoder chip
Configure the function: Up, down, stop, anti-lock full-featured reproduction
4). Magnetic loop
Voltage: 12V AC/DC +-10% 24V 115V AC+-10% 230V
Power: <2VA
Continued electrical output: 7A / 250V AC
Frequency range: 20 to 200K Hz
Response time: infinity (factory setting) or adjust maintain time
Sensitivity: 0.01% to 0.1% divided into 3 levels
Protection level: IP30
Electromagnetic compatibility (EMC) Complies with EM50081-1 and EN50082-2
Detection loop inductance: the limit of 40uH to 100uH ideal value 80uH to 300uH
Operating temperature: -25 ℃ to 70 ℃
Storage temperature: -40 ℃ to 85 ℃
Relative humidity: <90% non-condensing
Temperature compensation: automatic compensation up to 50 ℃ / h
Connection type: 11 pin DIN rail socket
Dimensions: 41 * 78 * 85 mm (width * height * length)
Weight: 250 grams
5). manual push button
This exit switch button is made of ABS and has built-in indicator light make it looks more elegant and fashionbale. It can be widely used in public entrance gates, public door, home, office, hotel, etc.
Door Exit Button Push To Exit Switch Door Opener For Access Control Security
Main Feature
Fashionable appearance
Made of ABS Plastic
Easy to install and operate
Used for access control
Specification
Mechanical Life: 500,000 test
Material: Plastic
6). Limit switch encoder
Voltage: DC5V-24V
Output voltage: high voltage≥85%Vcc, low voltage≤0.5V
Maximum mechanical speed:6000rpm
Anti-vibration: 50m/s,10-200HZ,XYZeach way 2 times.
Current consumption:≤30mA
Response frequency: 0-100KHZ
Protection: waterproof,oil proof,dust prevention, IP54
The output code system: binary code
Operating life: MTBF≥30000(+25℃,2000rpm)
Rotational inertia:4.0x10-8kgm²
Maximum load:radial direction20N
Axial direction:10N
Weight: about 0.4kg
High Speed Door Accessories,High Speed Door,Electronic High Speed Door Accessories
Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.spiralfastdoor.com
