CN116752939A - Thick oil exploitation device and method based on solid state circulation lifting - Google Patents
Thick oil exploitation device and method based on solid state circulation lifting Download PDFInfo
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- CN116752939A CN116752939A CN202311055659.2A CN202311055659A CN116752939A CN 116752939 A CN116752939 A CN 116752939A CN 202311055659 A CN202311055659 A CN 202311055659A CN 116752939 A CN116752939 A CN 116752939A
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- 239000007787 solid Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 52
- 238000011084 recovery Methods 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims description 20
- 239000007789 gas Substances 0.000 claims description 16
- 239000011261 inert gas Substances 0.000 claims description 10
- 238000000605 extraction Methods 0.000 claims description 8
- 239000003208 petroleum Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 125000004122 cyclic group Chemical group 0.000 claims description 5
- 239000012774 insulation material Substances 0.000 claims description 5
- 230000009466 transformation Effects 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000002341 toxic gas Substances 0.000 claims description 3
- 231100000331 toxic Toxicity 0.000 claims description 2
- 230000002588 toxic effect Effects 0.000 claims description 2
- 238000002474 experimental method Methods 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000008719 thickening Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 142
- 239000000295 fuel oil Substances 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 5
- 238000011065 in-situ storage Methods 0.000 description 5
- 238000010795 Steam Flooding Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000010724 circulating oil Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
- B65G17/12—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface comprising a series of individual load-carriers fixed, or normally fixed, relative to traction element
- B65G17/126—Bucket elevators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
- B65G17/30—Details; Auxiliary devices
- B65G17/32—Individual load-carriers
- B65G17/36—Individual load-carriers having concave surfaces, e.g. buckets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
- B65G23/22—Arrangements or mountings of driving motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/34—Devices for discharging articles or materials from conveyor
- B65G47/38—Devices for discharging articles or materials from conveyor by dumping, tripping, or releasing load carriers
- B65G47/40—Devices for discharging articles or materials from conveyor by dumping, tripping, or releasing load carriers by tilting conveyor buckets
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B36/00—Heating, cooling, insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/04—Heating, cooling, insulating arrangements for boreholes or wells, e.g. for use in permafrost zones using electrical heaters
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/005—Waste disposal systems
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
The invention discloses a thickened oil recovery device based on solid state circulation lifting and a method thereof, and aims to provide a device capable of carrying out thickening reduction treatment on thickened oil and circulation lifting recovery in the oil recovery process. The oil pipe is deep into the shaft, the surface of the oil pipe is provided with a pipe clamp and a heating box, the pipe clamp is fixedly provided with the circulating slide rail support, the inner cavity of the circulating slide rail support is provided with the chain and the oil carrying box, and the inside of the oil pipe penetrates into a cable and is connected with the heating box. The beneficial effects of the invention are as follows: the thick oil can be reasonably heated and ventilated, so that the viscosity of the thick oil is reduced, and the thick oil is favorable for exploitation; the temperature and pressure in the well are reduced in the lifting process, and the thickened oil is solidified into solid in an oil carrying box and is output; the device can circularly output thick oil at the bottom of the well, and has the advantages of convenient operation, safety, reliability, cost saving and the like.
Description
Technical Field
The invention relates to the technical field of thickened oil collection equipment, in particular to a thickened oil recovery device and a thickened oil recovery method based on solid state circulation lifting.
Background
Thick oil is also called heavy crude oil or high viscosity crude oil, and the reservoir is poor in flow but is relatively thick. At present, the conventional normal-temperature thickened oil injection exploitation yield is low, and mainly steam flooding oil exploitation and in-situ combustion oil exploitation are carried out; but the steam flooding oil extraction has the problems of higher operation and maintenance cost, narrower application range, low oil yield and the like; and in-situ combustion oil extraction can generate colloid, high asphaltene content, oxygen-containing substances and the like after in-situ combustion, the substances can cause easy foaming of in-situ combustion oil, the later gas-liquid-solid separation is difficult, and the foam is easy to cause equipment damage.
The thickened oil recovery device based on solid state circulation lifting and the method thereof mainly have the effects that the temperature and the pressure in a well are reduced in the lifting process, and thickened oil is solidified into solid in an oil carrying box and output; the device can directly and circularly output the thick oil at the bottom of the well, is convenient to operate, is safe and reliable, and saves cost.
Disclosure of Invention
The invention aims to provide a thickened oil exploitation device and a thickened oil exploitation method based on solid state circulation lifting, which replace the existing steam flooding oil exploitation and in-situ combustion oil exploitation modes adopted by land thickened oil exploitation, reduce economic cost, solve the problems of complex maintenance and the like.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a thickened oil recovery device based on solid state circulation lifting, comprising: the oil pipe, the derrick platform, the circulating slide rail bracket, the oil carrying box and the shaft penetrating into the stratum are fixed on the ground surface of the stratum and are positioned above the shaft; an oil pipe elevator is arranged above the table surface of the derrick table, and a sealed cabin is arranged below the table surface; the oil pipe elevator is welded on the wellhead platform, and is internally provided with an oil pipe for hanging an oil pipe column; the oil pipe penetrates through the well frame table and the sealed cabin and goes deep into the well shaft, and the top end of the oil pipe is connected with the air supply pump through the air pipe; the sealed cabin is arranged on the ground surface of the stratum and covers the whole shaft; the sealed cabin is internally provided with a motor and an oil receiving tank, the motor is fixed on the ground surface of the stratum and is connected with a chain wheel, and the motor provides power for circulating lifting; the top bulkhead of the sealed cabin is in sealing connection with the oil pipe, one side of the side bulkhead is connected with the gas recoverer through a pipeline, and the other side of the side bulkhead is in sealing connection with an oil conveying pipe connected with an oil tank; the perforation bullet holes are arranged below the shaft, so that thickened oil in the thickened oil layer can enter the shaft; the outer surface of the oil pipe is provided with a pipe clamp; the circular arc surface at the inner side of the pipe clamp is provided with an annular cavity, the circular arc surface at the outer side of the pipe clamp is provided with a support shaft, and the first ear flaps at the two sides of the pipe clamp are provided with round holes and square holes; the friction plate is embedded in the annular cavity; the supporting shaft is provided with a ratchet mechanism and a primary wheel clamp; the inner ring of the ratchet mechanism is concentric with the supporting shaft and is connected with the supporting shaft through a key; one end of the primary wheel clamp is fixedly provided with a wheel, the other end of the primary wheel clamp is provided with a square boss, and the square boss of the primary wheel clamp is connected with a shaft end square hole of the supporting shaft through a bolt; a secondary wheel clamp is arranged in the shaft; one end of the secondary wheel clamp is fixed with a wheel, and the other end of the secondary wheel clamp is provided with a square boss; the secondary wheel clamp is connected with square holes of first ear flaps at two sides of the pipe clamp; the circulating slide rail bracket is provided with a bolt base, and the inner cavity of the circulating slide rail bracket is provided with a slide groove; the bolt base is connected with round holes on the first lugs on two sides of the pipe clamp, the pipe clamp is fastened on the oil pipe, and the circulating slide rail bracket is fixed on the pipe clamp; a chain is arranged in the chute; the oil carrying box is provided with a pulley; the oil carrying box is connected with the chain through a pin shaft and is lifted along with the chain in a circulating way; the chain is meshed with the ratchet teeth on the ratchet mechanism and meshed with the chain wheel; the outer surface of the oil pipe near the bottom end is provided with a heating box; square holes are formed in the second ear flaps on the two sides of the heating box, heating plates are arranged on the surface of the heating box, and a pressure-variable controller and a heat-insulating material are arranged in the heating box; square holes on the second lugs on the two sides of the heating box are connected with square bosses on the second-stage wheel clamp, and the heating box is fastened on the oil pipe; the heating plate is fixed on the heating box through a screw; the heat insulation material wraps the variable-pressure controller and is fixed in the heating box; a cable is arranged in the oil pipe; one end of the cable is connected with an external power supply, and the other end of the cable is connected with a voltage transformation controller; the lower end of the oil pipe is provided with a one-way valve; the one-way valve is connected with the bottom end of the oil pipe through threads.
The one end that one-level wheel anchor clamps and second grade wheel anchor clamps were fixed with the wheel points to the opposite, and the square boss of the other end restriction wheel direction of movement is downward, and the wheel supports the internal face at the pit shaft and constitutes the article font, makes eccentric device more stable.
A wire guide hole is formed below the oil pipe, and a cable is arranged in the inner cavity; the cable is connected to the voltage transformation controller through the wire guide; the pressure-variable controller connects the low-voltage current with the heating plate through the circuit pipeline, supplies power to the heating plate to heat the thickened oil, and reduces the viscosity of the thickened oil.
The circulating slide rail support is an inverted L-shaped frame as a whole and consists of a primary slide rail support, a secondary slide rail support and a tertiary slide rail support, wherein the transverse straight section part of the primary slide rail support has a certain downward inclination, so that petroleum in the oil carrying box can be naturally inclined and poured into the oil receiving tank; the outermost annular surface of the circulating slide rail bracket is provided with a continuous groove for the oil carrying box to slide; square holes are formed in the inner sides of two adjacent sides of the circulating slide rail support and the ratchet mechanism, and the ratchet is meshed with the chain.
A ratchet mechanism is arranged on a supporting shaft of the pipe clamp, and the supporting shaft is concentric with the ratchet inner ring and is connected with the ratchet inner ring through a key; the ratchet mechanism is provided with a spring and a jack, and the spring and the jack are positioned in an arc-shaped groove of the inner ring of the ratchet; the spring is propped against the inclined plane of the jack, and the smaller arc-shaped end of the jack is just propped in the groove of the inner ring of the ratchet, so that the ratchet can only rotate singly towards one direction.
The application method of the thickened oil recovery device based on solid state circulation lifting comprises the following steps:
step one: the ground is electrified to the heating box through a cable, the high-voltage current is converted into the low-voltage current by the variable-voltage controller and is conveyed to the heating plate, the heating plate on the heating box starts to heat and heat thick oil in the shaft, the viscosity of the thick oil is reduced, the inert gas is input into the oil pipe through the gas pipe by the ground gas supply pump, and the inert gas is input into the shaft bottom through the oil pipe and is discharged through the one-way valve, so that the fluidity of the thick oil is increased.
Step two: the motor starts to drive the chain wheel to rotate anticlockwise, the chain wheel drives the chain to rotate anticlockwise, the oil carrying box fixed on the chain moves along with the chain in a chute on the circulating slide rail support, namely, the left oil carrying box moves downwards along with the chain into thick oil in a well bottom, the oil carrying box lifts upwards along with the chain after being fully loaded with the thick oil, when the oil carrying box moves to the position right above the oil receiving tank, the thick oil in the oil carrying box naturally falls into the oil receiving tank due to self gravity because the first-stage slide rail support right above the oil receiving tank has a certain inclination, the oil receiving tank heats and increases the fluidity of the thick oil, the thick oil is output to the next-stage treatment through an oil conveying pipe on the oil receiving tank, and then the oil carrying box continues to carry out circulating oil extraction along with the chain.
Step three: toxic and inert gases expelled from the wellbore during the cyclic oil recovery process are absorbed by the gas recovery unit.
The invention has the following advantages: the thick oil can be reasonably heated and ventilated, so that the viscosity of the thick oil is reduced, and the thick oil is easy to collect; the pressure and temperature in the well are reduced in the lifting process, and the thickened oil is solidified into solid in the oil carrying box so as to be beneficial to output; the device can circularly output thick oil at the bottom of the well, is convenient to operate, is safe and reliable, and saves cost.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a schematic view of the pipe clamp of the present invention;
FIG. 4 is an enlarged fragmentary exploded view of the invention at A in FIG. 1;
FIG. 5 is a schematic view of a ratchet mechanism according to the present invention;
FIG. 6 is a schematic view of the structure of the circulating slide rail bracket of the present invention;
FIG. 7 is a cross-sectional view of the B-B section of FIG. 2 in accordance with the present invention;
FIG. 8 is a cross-sectional view of the section C-C of FIG. 2 in accordance with the present invention.
In the figure: the gas supply pump 1, the gas pipe 2, the oil pipe 3, the oil pipe elevator 4, the derrick platform 5, the gas recoverer 6, the seal cabin 7, the motor 8, the sprocket 9, the oil receiving tank 10, the circulating slide rail bracket 11, the primary slide rail bracket 1101, the secondary slide rail bracket 1102, the tertiary slide rail bracket 1103, the bolt base 1104, the square hole 1105, the slide groove 1106, the pipe clamp 12, the annular cavity 1201, the support shaft 1202, the first tab 1203, the friction plate 13, the ratchet mechanism 14, the ratchet inner ring 1401, the jack 1402, the spring 1403, the ratchet 1404, the bolt 15, the primary wheel clamp 16, the pin shaft 17, the chain 18, the oil carrying box 19, the pulley 20, the secondary wheel clamp 21, the heating tank 22, the second tab 2201, the heating plate 23, the cable 24, the wire hole 25, the pressure change controller 26, the heat insulating material 27, the line pipe 28, the check valve 29, the shaft 30, the perforation bullet hole 31, the stratum 32, and the thick oil layer 33.
Detailed Description
The invention is further described in connection with the following drawings and detailed description:
according to the drawings from 1 to 8, a thickened oil recovery device based on solid state circulation lifting and a method thereof are provided, wherein the thickened oil recovery device comprises: the well head comprises an oil pipe 3, a derrick platform 5, a circulating slide rail bracket 11, an oil carrying box 19 and a well shaft 30 penetrating into a stratum 32, wherein the derrick platform 5 is fixed on the ground surface of the stratum 32 and is positioned above the well shaft 30; an oil pipe elevator 4 is arranged above the table surface of the derrick platform 5, and a sealed cabin 7 is arranged below the table surface; the oil pipe elevator 4 is welded on the derrick platform 5, and is internally provided with an oil pipe 3 for hanging an oil pipe column; the oil pipe 3 penetrates through the wellhead platform 5 and the sealed cabin 7 and goes deep into the wellbore 30, and the top end of the oil pipe 3 is connected with the air supply pump 1 through the air pipe 2; the sealed cabin 7 is arranged on the ground surface of the stratum 32 and covers the whole shaft 30; the sealed cabin 7 is internally provided with a motor 8 and an oil receiving tank 10, the motor 8 is fixed on the ground surface of the stratum 32 through bolts and is connected with the chain wheel 9, and the motor 8 provides power for circulating lifting; the top end bulkhead of the sealed cabin 7 is in sealing connection with the oil pipe 3 through an O-shaped ring, one side of the side bulkhead is connected with the gas recoverer 6 through a pipeline, and the other side of the side bulkhead is in sealing connection with an oil conveying pipe on the oil receiving tank 10 through an O-shaped ring, so that leakage of harmful gas is prevented; a perforating bullet hole 31 is arranged below the shaft 30, so that thick oil in a thick oil layer 33 enters the shaft 30; the outer surface of the oil pipe 3 is provided with a pipe clamp 12; the circular arc surface at the inner side of the pipe clamp 12 is provided with an annular cavity 1201, the circular arc surface at the outer side of the pipe clamp 12 is provided with a supporting shaft 1202, and the first lugs 1203 at the two sides of the pipe clamp 12 are provided with round holes and square holes; the friction plate 13 is embedded in the annular cavity 1201, so that the friction force of the pipe clamp 12 is increased, and the pipe clamp 12 is prevented from sliding downwards; the supporting shaft 1202 is provided with a ratchet mechanism 14 and a primary wheel clamp 16; an inner ring 1401 of the ratchet mechanism 14 is concentric with the supporting shaft 1202 and is connected with the supporting shaft 1202 through a key, the ratchet mechanism 14 is provided with a spring 1403 and a jack 1402, and the spring 1403 and the jack 1402 are positioned in an arc-shaped groove of the inner ring 1401 of the ratchet; the spring 1403 abuts against the inclined surface of the jack 1402, the smaller arc end of the jack 1402 just abuts against the groove of the inner ring of the ratchet 1404, so that the ratchet 1404 can only rotate singly in one direction, and the chain 18 is prevented from moving reversely during emergency to enable thick oil to fall into the shaft 30; one end of the primary wheel clamp 16 is fixedly provided with a wheel, the other end of the primary wheel clamp 16 is provided with a square boss, and the square boss of the primary wheel clamp 16 is connected with a shaft end square hole of the support shaft 1202 through a bolt 15; a secondary wheel clamp 21 is arranged in the shaft 30; one end of the secondary wheel clamp 21 is fixed with a wheel, and the other end is provided with a square boss; the secondary wheel clamp 21 is connected with square holes of the first 1203 lugs at two sides of the pipe clamp 12, screw holes of the secondary wheel clamp 21 are connected through bolts, the secondary wheel clamp 21 is fixed on the pipe clamp 12, one ends of the primary wheel clamp 16 and the secondary wheel clamp 21, on which wheels are fixed, are opposite in direction, the square bosses at the other ends limit the movement direction of the wheels to be downward, and the wheels are supported on the inner wall surface of the shaft 30 to form a delta shape, so that the eccentric device is more stable; the circulating slide rail bracket 11 is an inverted L-shaped frame as a whole and consists of a first-stage slide rail bracket 1101, a second-stage slide rail bracket 1102 and a third-stage slide rail bracket 1103, wherein the transverse straight line section of the first-stage slide rail bracket 1101 has a certain downward inclination, so that the petroleum in the petroleum carrying box can be naturally inclined and poured into the petroleum receiving box; the outermost annular surface of the circulating slide rail bracket 11 is provided with a continuous groove for the oil carrying box 19 to slide; square holes 1105 are formed in the inner sides of two sides of the circulating slide rail bracket 11 adjacent to the ratchet mechanism 14 for the ratchet 1404 to be meshed with the chain 18; the circulating slide rail bracket 11 is provided with a bolt base 1104, and the inner cavity is provided with a chute 1106; the bolt base 1104 is connected with round holes on the first 1203 of the two side lugs of the pipe clamp 12, the bolts on the bolt base 1104 are connected with nuts, the pipe clamp 12 is fastened on the oil pipe 3, and the circulating slide rail bracket 11 is fixed on the pipe clamp 12; a chain 18 is arranged in the chute 1106; the pulley 20 is arranged on the oil carrying box 19, so that friction assistance between the oil carrying box 19 and the sliding groove 1106 is reduced; the oil carrying box 19 is connected with the chain 18 through a pin shaft 17 and is lifted along with the chain 18 in a circulating way; the chain 18 is engaged with the ratchet teeth 1404 on the ratchet mechanism 14 and with the sprocket 9; the outer surface of the oil pipe 3 near the bottom end is provided with a heating box 22; square holes are formed in the second side petals 2201 of the heating box 22, heating plates 23 are arranged on the surface of the heating box 22, and a variable-pressure controller 26 and a heat insulation material 27 are arranged inside the heating box 22; square holes on two side lugs 2201 of the heating box 22 are connected with square bosses on the secondary wheel clamp 21, and are connected with threaded holes of the secondary wheel clamp 21 through bolts, so that the heating box 22 is fastened on the oil pipe 3; the heating plate 23 is fixed on the heating box 22 through screws; the heat insulation material 27 wraps the variable pressure controller 26 and is fixed inside the heating box 22; a cable 24 is arranged in the oil pipe 3; one end of the cable 24 is connected with an external power supply, and the other end of the cable passes through a wire guide 25 and is connected to a voltage transformation controller 26; the pressure-variable controller 26 connects the low-voltage current flowing through the circuit pipeline 28 with the heating plate 23, supplies power to the heating plate 23 to heat the thick oil, and reduces the viscosity of the thick oil; the lower end of the oil pipe 3 is connected with a check valve 29 through threads, and the check valve 29 is used for discharging inert gas to prevent thick oil from entering the oil pipe 3 to corrode the cable 24.
The application steps of the invention are described in detail: the thick oil in the thick oil layer 33 flows into the shaft 30 through the perforating bullet hole 31, the thick oil in the shaft 30 floods the lowest pipe clamp 12, the ground is electrified to the heating box 22 through the cable 24, the high-voltage current is converted into the low-voltage current by the variable-voltage controller 26 and is transmitted to the heating plate 23, the heating plate 23 on the heating box 22 begins to heat up and heat the thick oil in the shaft 30, the viscosity of the thick oil is reduced, the ground air supply pump 1 inputs inert gas into the oil pipe 3 through the gas pipe 2, the inert gas is input into the bottom of the well and is discharged through the one-way valve 29, the fluidity of the thick oil is increased, the motor 8 starts to drive the chain wheel 9 to rotate anticlockwise, the chain wheel 9 drives the chain 18 to rotate anticlockwise, the oil carrying box 19 fixed on the chain 18 runs along with the chain 18 in the sliding groove 1106 on the circulating sliding rail bracket 11, namely the left oil carrying box 19 moves downwards along with the chain 18 into the thick oil in the bottom of the well, the heavy oil in the oil carrying box 19 is fully loaded and then upwards along with the chain 18, in the cyclic lifting process, along with the reduction of the temperature and the pressure in the well, the heavy oil in the oil carrying box 19 is gradually solidified into a solid, when the heavy oil moves to the position right above the oil receiving box 10, as the first-stage sliding rail bracket 1101 right above the oil receiving box 10 is provided with a certain inclination, the heavy oil in the oil carrying box 19 can be naturally dumped into the oil receiving box 10 due to self gravity, the oil receiving box 10 is heated to increase the fluidity of the heavy oil, the heavy oil is output to the next stage of treatment through an oil conveying pipe on the oil receiving box 10, then the oil carrying box 19 continues to carry out cyclic oil extraction along with the chain 18, toxic gas and inert gas discharged from the shaft 30 in the cyclic oil extraction process can be absorbed by the gas recoverer 6, and the gas recoverer 6 filters and recycles the purified gas.
When the chain 18 breaks suddenly, the oil carrying box 19 and the chain 18 on the side full of heavy oil drop downwards, so that the ratchet mechanism 14 moves clockwise, the smaller arc end of the jack 1402 abuts against the groove in the inner ring of the ratchet 1404, the ratchet 1404 cannot rotate, and the ratchet 1404 is meshed with the chain 18, so that the oil carrying box 19 and the chain 18 on the side full of heavy oil no longer drop. The dropped chains 18 and the oil carrier 19 are all limited in the sliding groove 1106, so that the shaft 30 is not blocked, and the maintenance of the taking-out device is facilitated.
Claims (6)
1. The thickened oil recovery device based on solid state circulation lifting is characterized by comprising an oil pipe (3), a derrick platform (5), a circulation slide rail bracket (11), an oil carrying box (19) and a shaft (30) penetrating into a stratum (32), wherein the derrick platform (5) is fixed on the ground surface of the stratum (32) and is positioned above the shaft (30); an oil pipe elevator (4) is arranged above the table top of the derrick table (5), and a sealed cabin (7) is arranged below the table top; the oil pipe elevator (4) is welded on the derrick platform (5), and an oil pipe (3) is arranged in the oil pipe elevator and used for hanging an oil pipe column; the oil pipe (3) penetrates through the wellhead platform (5) and the sealed cabin (7) and goes deep into the wellbore (30), and the top end of the oil pipe (3) is connected with the air supply pump (1) through the air pipe (2); the sealed cabin (7) is arranged on the ground surface of the stratum (32) and covers the whole shaft (30); a motor (8) and an oil receiving tank (10) are arranged in the sealed cabin (7), the motor (8) is fixed on the ground surface of the stratum (32) and is connected with a chain wheel (9), and the motor (8) provides power for circulating lifting; the top end bulkhead of the sealed cabin (7) is in sealing connection with the oil pipe (3), one side of the side bulkhead is connected with the gas recoverer (6) through a pipeline, and the other side of the side bulkhead is in sealing connection with an oil delivery pipe on the oil receiving tank (10); a perforating bullet hole (31) is arranged below the shaft (30), so that thickened oil in a thickened oil layer (33) can enter the shaft (30); the outer surface of the oil pipe (3) is provided with a pipe clamp (12); an annular cavity (1201) is formed in the inner arc surface of the pipe clamp (12), a supporting shaft (1202) is arranged on the outer arc surface of the pipe clamp (12), and round holes and square holes are formed in the first ear flaps (1203) on the two sides of the pipe clamp (12); a friction plate (13) is embedded in the annular cavity (1201); the supporting shaft (1202) is provided with a ratchet mechanism (14) and a primary wheel clamp (16); an inner ring (1401) of the ratchet mechanism (14) is concentric with the support shaft (1202) and is connected through a key; one end of the primary wheel clamp (16) is fixedly provided with a wheel, the other end of the primary wheel clamp is provided with a square boss, and the square boss of the primary wheel clamp (16) is connected with a shaft end square hole of the supporting shaft (1202) through a bolt (15); a secondary wheel clamp (21) is arranged in the shaft (30); one end of the secondary wheel clamp (21) is fixed with a wheel, and the other end of the secondary wheel clamp is provided with a square boss; the secondary wheel clamp (21) is connected with square holes of first lugs (1203) at two sides of the pipe clamp (12); the circulating slide rail bracket (11) is provided with a bolt base (1104), and the inner cavity is provided with a chute (1106); the bolt base (1104) is connected with round holes on first lugs (1203) on two sides of the pipe clamp (12), the pipe clamp (12) is fastened on the oil pipe (3), and the circulating slide rail bracket (11) is fixed on the pipe clamp (12); a chain (18) is arranged in the chute (1106); the oil carrying box (19) is provided with a pulley (20); the oil carrying box (19) is connected with the chain (18) through a pin shaft (17) and is lifted circularly along with the chain (18); the chain (18) is meshed with a ratchet (1404) on the ratchet mechanism (14) and is meshed with the chain wheel (9); the outer surface of the oil pipe (3) near the bottom end is provided with a heating box (22); square holes are formed in two side lugs (2201) of the heating box (22), heating plates (23) are arranged on the surface of the heating box (22), and a variable-pressure controller (26) and a heat insulation material (27) are arranged inside the heating box (22); square holes on two side lugs (2201) of the heating box (22) are connected with square bosses on the secondary wheel clamp (21), and the heating box (22) is fastened on the oil pipe (3); the heating plate (23) is fixed on the heating box (22) through a screw; the heat insulation material (27) wraps the variable-pressure controller (26) and is fixed inside the heating box (22); a cable (24) is arranged in the oil pipe (3); one end of the cable (24) is connected with an external power supply, and the other end of the cable is connected with a voltage transformation controller (26); the lower end of the oil pipe (3) is provided with a one-way valve (29); the one-way valve (29) is connected with the bottom end of the oil pipe (3) through threads.
2. The thickened oil extraction device based on solid circulation lifting as claimed in claim 1, wherein one ends of the primary wheel clamp (16) and the secondary wheel clamp (21) with wheels fixed are opposite in direction, square bosses at the other ends limit the movement direction of the wheels to be downward, and the wheels are supported on the inner wall surface of a shaft (30) to form a delta shape, so that the eccentric device is more stable.
3. The thickened oil recovery device based on solid state circulation lifting as claimed in claim 1, wherein a wire guide (25) is arranged below the oil pipe (3), and a cable (24) is arranged in the pipe; the cable (24) is connected to a voltage transformation controller (26) through a wire guide (25); the pressure-variable controller (26) connects the low-voltage current flowing through the circuit pipeline (28) with the heating plate (23), and supplies power to the heating plate (23) to heat the thick oil, so that the viscosity of the thick oil is reduced.
4. The thickened oil extraction device based on solid state circulation lifting as claimed in claim 1, wherein the circulating slide rail bracket (11) is an inverted L-shaped frame as a whole and consists of a primary slide rail bracket (1101), a secondary slide rail bracket (1102) and a tertiary slide rail bracket (1103), wherein the transverse straight line section part of the primary slide rail bracket (1101) is provided with a certain downward inclination, so that petroleum in the petroleum carrying box (19) can be naturally inclined and poured into the petroleum receiving box (10); the outermost annular surface of the circulating slide rail bracket (11) is provided with a continuous groove for the oil carrying box (19) to slide; square holes (1105) are formed in the inner sides of two adjacent sides of the circulating slide rail support (11) and the ratchet mechanism (14) for the ratchet teeth (1404) to be meshed with the chain (18).
5. The thickened oil extraction device based on solid state circulation lifting as claimed in claim 1, characterized in that a ratchet mechanism (14) is arranged on a supporting shaft (1202) of the pipe clamp (12), and the supporting shaft (1202) is concentric with a ratchet inner ring (1401) and connected through keys; the ratchet mechanism (14) is provided with a spring (1403) and a jack (1402), and the spring (1403) and the jack (1402) are positioned in an arc-shaped groove of the ratchet inner ring (1401); the spring (1403) is propped against the inclined surface of the jack (1402), and the smaller arc-shaped end of the jack (1402) is just propped against the groove of the inner ring of the ratchet (1404), so that the ratchet (1404) can only rotate in a single direction.
6. A thickened oil recovery method based on solid state circulation lifting is characterized by comprising the following steps: a thickened oil recovery experiment using a recovery apparatus according to any one of claims 1-5, comprising the steps of: step one: the ground is electrified to the heating box (22) through a cable (24), the high-voltage current is converted into the high-voltage current by the variable-voltage controller (26) and is conveyed to the heating plate (23), the heating plate (23) on the heating box (22) starts to heat up and heat thick oil in the shaft (30), the viscosity of the thick oil is reduced, the ground air supply pump (1) inputs inert gas into the oil pipe (3) through the gas pipe (2), and the inert gas is input into the bottom of the well through the oil pipe (3) and is discharged through the one-way valve (29), so that the fluidity of the thick oil is increased; step two: the motor (8) starts to drive the chain wheel (9) to rotate anticlockwise, the chain wheel (9) drives the chain (18) to rotate anticlockwise, the oil carrying box (19) fixed on the chain (18) runs along with the chain (18) in a sliding groove (1106) on the circulating sliding rail bracket (11), namely the left oil carrying box (19) moves downwards along with the chain (18) into thick oil in a well bottom, the oil carrying box (19) is fully loaded with the thick oil and then lifted upwards along with the chain (18), and when the thick oil moves to the position right above the oil receiving box (10), the thick oil in the oil carrying box (19) naturally falls into the oil receiving box (10) due to self gravity, the thick oil is heated to increase the fluidity of the thick oil, is output to the next stage of treatment through an oil receiving pipe, and then the oil carrying box (19) continues to circulate along with the chain (18); step three: toxic and inert gases discharged from the well bore (30) during the cyclic oil recovery process are absorbed by the gas recovery device (6).
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| CN202311055659.2A CN116752939B (en) | 2023-08-22 | 2023-08-22 | Thick oil exploitation device and method based on solid state circulation lifting |
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| CN116752939B CN116752939B (en) | 2023-10-17 |
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| CN115788370A (en) * | 2023-02-09 | 2023-03-14 | 山东华曦石油技术服务有限公司 | Thick oil continuous cold-production device and using method |
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| US4633952A (en) * | 1984-04-03 | 1987-01-06 | Halliburton Company | Multi-mode testing tool and method of use |
| US20090166032A1 (en) * | 2004-07-07 | 2009-07-02 | Carr Sr Michael Ray | Inline Downhole Heater and Methods of Use |
| US20090145595A1 (en) * | 2007-12-10 | 2009-06-11 | Mazzanti Daryl V | Gas assisted downhole pump |
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| CN116752939B (en) | 2023-10-17 |
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