Individual well oil gas collecting device
Technical field
The utility model belongs to oil well auxiliary equipment, particularly a kind of individual well oil gas collecting device.
Background technology
Along with continually developing of oil field, the development well being in Quo of Gathering Network edge gets more and more, owing to being in Quo of Gathering Network edge, this part oil well oil collecting pipe line length, heat waste are large, Liquid transfer resistance is large, be difficult to normally produce continuously into system, for the needs ensureing to produce, adopt single pull-mode to produce at present, namely oil enters normal pressure oil storage tank; The viscosity of crude that some oil wells are extracted out is large, easily blocks oil pipeline; Due to without effective recovery process and means, a large amount of associated gas is directly discharged in air on the spot; In order to solve the large problem of viscosity of crude, need to heat normal pressure oil storage tank: the measure usually taked uses coal to heat at fiery cylinder roasting, waste resource, contaminated environment; Because natural gas is on the spot discharged in air, runs into naked light and be very easy to blast, there is very large potential safety hazard.And the oil vapor treatment equipment one-time investment that current oil/gas field station adopts is large, and later maintenance cost is high, personnel labor intensity is large, and running cost is high.
Utility model content
For problems of the prior art, the utility model provides a kind of individual well oil gas collecting device, storage, separation, heating, metering, cleaning function can be integrated, petroleum vapor recovery is carried out while guarantee is produced, effectively can improve production management level, realize cleaner production, in normal operation condition, there is not security risk, economic benefit is obvious.
For achieving the above object, the utility model is by the following technical solutions:
A kind of individual well oil gas collecting device, comprise base and be arranged on the tank body on base, safety valve is provided with on tank body top, described tank interior is provided with back purge system, heater, gas and oil separating plant, metering device and thing level display apparatus, the direction that described back purge system extends along tank body is laid in tank base, described heater is laid in the top of back purge system along the direction that tank body extends, and described gas and oil separating plant, metering device and thing level display apparatus are laid in tank interior from left to right successively.
Described back purge system comprises two mains be arrangeding in parallel of direction extended along tank body, described two mains with the axis of tank body for axis of symmetry is symmetrical, described two mains meet on water inlet manifold, and the end that water inlet manifold stretches out tank body is provided with into water interface.
Described main is welded with outside sand clean out pipe and inner side sand clean out pipe, between described adjacent outer sand clean out pipe and inner side sand clean out pipe all with the main axis at its place for axis of symmetry is distributed in the both sides of main axis, angle α between described adjacent outer sand clean out pipe and inner side sand clean out pipe is 60-80 °, and the horizontal range between described outside sand clean out pipe and inner tank wall is 140-160mm.
Described heater comprises the fiery cylinder that the direction inwall be arranged on above back purge system extended along tank body is rafractory concrete, one end of described fiery cylinder is stretched out tank body and is connected with burner, the end that described fiery cylinder and burner connect is connected with inner appendix, and the free end of described inner appendix is connected with gas collecting apparatus.
Described gas collecting apparatus comprises gas skirt, is provided with mist eliminator in gas skirt inside, and described gas skirt top is provided with gas outlet.
Described gas and oil separating plant comprises and is placed in horizontally disposed circular transverse slat in charging cylinder, described circular transverse slat upper surface is that right-angled intersection is provided with rectification pre-separation plate and carrys out liquid eddy flow lamella, described rectification pre-separation plate and carry out liquid eddy flow lamella and form that cross is staggered pipeline is separated into four spaces, described come liquid eddy flow lamella be provided with manhole, spacing between adjacent circular through hole is 75mm, and the diameter of manhole is 12mm; Described charging cylinder is connected with feed pipe, and the free end of described feed pipe is provided with crude oil import, and described feed pipe is provided with Material control valve.
Described metering device comprises crude oil metering device and gas-metering device, described crude oil metering device comprises drain the oil pipeline and low level of the high position being arranged on tank interior and to drain the oil pipeline, drain the oil pipeline and low level of a described high position is drained the oil on pipeline and is equipped with fuel tap, drain the oil pipeline and low level drain line line of a described high position meets on flow line, the free end of flow line is provided with crude exports, and described flow line is provided with crude oil flowmeter; Described gas-metering device comprises gas external transport pipeline, and one end of described gas external transport pipeline is connected with the gas outlet at gas skirt top, and its other end is provided with gas outlet, and described gas external transport pipeline is provided with gas flowmeter and air valve.
The vertical distance a that a described high position is drained the oil on high-order fuel outlet on pipeline and fiery cylinder between outer wall is 100-110mm, and the vertical distance b that described low level is drained the oil at the bottom of low level fuel outlet on pipeline and tank body between inwall is 50-60mm.
Described thing level display apparatus comprises the ball float mouth being welded on tank wall, tank mark rotor is provided with in described ball float mouth, fixed by bolt and blind flange between described tank mark rotor and ball float mouth, between tank mark rotor and blind flange, be provided with seal, described tank mark rotor is coaxially provided with liquid level direction board and pointer from inside to outside successively; One end that described tank mark rotor is positioned at tank body is provided with keyway, is provided with flat key in described keyway, and tank mark rotor is connected by key between flat key with shaft coupling, is connected with floating ball rod at the other end of shaft coupling, and the bottom of described floating ball rod is connected with ball float; Tank mark rotor is provided with tank mark, is convenient to observe liquid level in tank body, when tank mark breaks down, quickly-detachable is changed, convenient for maintaining.
The utility model adopts skid modular design, and interface all adopts fast-assembling Interface design.
Compared with prior art, the beneficial effects of the utility model are:
1. solve the uncovered storage tank natural gas in current well site emission problem on the spot, realize cleaner production, eliminate safe hidden trouble; 2. can realize high back pressure well and outlying loose well to enter tank metering and produce, can realize individual well natural gas and reclaim in time, integrate storages, separation, heating, metering, cleaning function, function combined and instant, in-site installation gets final product installation and operation without the need to welding; 3. the utility model is adopted as skid-mounted type structure, and lifting is convenient, when remote well production is low, can closes Di Chan Bowl, be transferred to other high-yield well at any time, saves a large amount of equipment investment in early stage, mounting cost, freight charges and later maintenance cost; 4. can solve oil pipeline and hold susceptible to plugging problem; And the natural gas of effectively a large amount of association in recovery process Crude Oil, a part is used for the heating of fiery cylinder, the blocking of oil pipeline avoided by heating in crude oil pipeline, measured collection on the other hand, pipeline is provided with fluid flowmeter and gas flowmeter, transport to main line or container outside after can carrying out metering, the total quantity of the outer defeated gas of this container and liquid can be measured; 5. by back purge system, the sludge sand that bottom carried by tank is stirred into suspension, rinse; Then be filled with natural gas in tank, make to reach certain pressure in this tank; Again by sand clean out pipe and main, the mixture of the liquid in tank and silt is utilized the pressure in tank, extrude, operating personnel need not enter cleaning in tank, avoid the generation of Poisoning choke accident, with reaching the order removing inner greasy filth; 6. when this container needs cleaning or turn well transport, use low level to drain the oil pipeline, the vertical distance b that low level is drained the oil at the bottom of low level fuel outlet on pipeline and tank body between inwall is 50-60mm, is convenient to the emptying to greatest extent of the liquid in tank body, reduce the overall weight that this skid is put, be convenient to lifting; During usual production, in order to prevent liquid crude oil sclerosis in tank, usually the vertical distance a that a high position is drained the oil on high-order fuel outlet on pipeline and fiery cylinder between outer wall is set to 100-110mm, even if when draining the oil, also can ensure that amount of liquid is higher than fiery cylinder 100-110mm, prevents dry combustion method from causing the accident.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Fig. 2 is the structural representation of the utility model back purge system.
Fig. 3 is the A direction view of Fig. 2.
Fig. 4 is the top view of Fig. 2.
Fig. 5 is the top view of the utility model heater.
Fig. 6 is the structural representation of the utility model gas and oil separating plant.
Fig. 7 is the B direction view of Fig. 6.
Fig. 8 is the top view of charging cylinder in the utility model gas and oil separating plant.
Fig. 9 is the front view of Fig. 8.
Figure 10 is the structural representation of the utility model thing level display apparatus.
Figure 11 is the C direction view of Figure 10.
Figure 12 is the transverse sectional view of Figure 11 shaft coupling.
Figure 13 is the A-A view of Figure 12.
Figure 14 is the B-B view of Figure 12.
Figure 15 is the C-C view of Figure 12.
Detailed description of the invention
As shown in Fig. 1 to Figure 15, the present embodiment individual well oil gas collecting device, the tank body 2 comprising base 1 and be arranged on base, safety valve 3 is provided with on tank body top, described tank interior is provided with back purge system, heater, gas and oil separating plant, metering device and thing level display apparatus, the direction that described back purge system extends along tank body is laid in tank base, described heater is laid in the top of back purge system along the direction that tank body extends, and described gas and oil separating plant, metering device and thing level display apparatus are laid in tank interior from left to right successively.
The present embodiment back purge system comprises two mains 4 be arrangeding in parallel of direction extended along tank body, described two mains with the axis of tank body for axis of symmetry is symmetrical, described two mains meet on water inlet manifold 5, and the end that water inlet manifold stretches out tank body is provided with into water interface 6; Described main is welded with outside sand clean out pipe 7-1 and inner side sand clean out pipe 7-2, between described adjacent outer sand clean out pipe and inner side sand clean out pipe all with the main axis at its place for axis of symmetry is distributed in the both sides of main axis, angle α between described adjacent outer sand clean out pipe and inner side sand clean out pipe is 60 °, 75 ° or 80 °, and the horizontal range between described outside sand clean out pipe and inner tank wall is 140 mm, 150mm or 160mm.
The present embodiment heater comprises the fiery cylinder 8 that the direction inwall be arranged on above back purge system extended along tank body is rafractory concrete, one end of described fiery cylinder is stretched out tank body and is connected with burner 9, the end that described fiery cylinder and burner connect is connected with inner appendix 10, and the free end of described inner appendix is connected with gas collecting apparatus; Described gas collecting apparatus comprises gas skirt 11, is provided with mist eliminator 12 in gas skirt inside, and described gas skirt top is provided with gas outlet 13.
The present embodiment gas and oil separating plant comprises and is placed in horizontally disposed circular transverse slat 15 in charging cylinder 14, described circular transverse slat upper surface is that right-angled intersection is provided with rectification pre-separation plate 16 and carrys out liquid eddy flow lamella 17, described rectification pre-separation plate and carry out liquid eddy flow lamella and form that cross is staggered pipeline is separated into four spaces, described come liquid eddy flow lamella be provided with manhole 18, spacing between adjacent circular through hole is 75mm, and the diameter of manhole is 12mm; Described charging cylinder is connected with feed pipe 19, and the free end of described feed pipe is provided with crude oil import 20, and described feed pipe is provided with Material control valve 21.
The present embodiment metering device comprises crude oil metering device and gas-metering device, described crude oil metering device comprises drain the oil pipeline 22 and low level of the high position being arranged on tank interior and to drain the oil pipeline 23, drain the oil pipeline and low level of a described high position is drained the oil on pipeline and is equipped with fuel tap 24, drain the oil pipeline and low level drain line line of a described high position meets on flow line 25, the free end of flow line is provided with crude exports 26, and described flow line is provided with crude oil flowmeter 27; Described gas-metering device comprises gas external transport pipeline 28, and one end of described gas external transport pipeline is connected with the gas outlet at gas skirt top, and its other end is provided with gas outlet 29, and described gas external transport pipeline is provided with gas flowmeter 30 and air valve 31; The vertical distance a that a described high position is drained the oil between high-order fuel outlet 22-1 on pipeline and fiery drum outer wall is 100mm, 105mm or 110mm, and the vertical distance b that described low level is drained the oil at the bottom of low level fuel outlet 23-1 on pipeline and tank body between inwall is 50mm, 58mm or 60mm.
The present embodiment thing level display apparatus comprises the ball float mouth 32 being welded on tank wall, tank mark rotor 33 is provided with in described ball float mouth, fixed by bolt 34 and blind flange 35 between described tank mark rotor and ball float mouth, between tank mark rotor and blind flange, be provided with seal 36, described tank mark rotor is coaxially provided with liquid level direction board 37 and pointer 38 from inside to outside successively; One end that described tank mark rotor is positioned at tank body is provided with keyway 39, is provided with flat key 40 in described keyway, and tank mark rotor is connected by key between flat key with shaft coupling 41, is connected with floating ball rod 42 at the other end of shaft coupling, and the bottom of described floating ball rod is connected with ball float 43; Tank in thing level display apparatus is designated as interchangeable tank mark, and tank is put on and is provided with pressure meter 44, and pointer and tank mark rotor are fixed, and position of making zero on liquid level direction board; Tank mark rotor uses flat key to be connected and driving force with shaft coupling, and floating ball rod and shaft coupling are that 90 ° of angles link together; When liquid level in tank raises or reduce, ball float raises or declines under the effect of buoyancy, rotates shaft coupling by floating ball rod, and shaft coupling drives again tank mark rotor to rotate simultaneously, and shows actual liquid level on liquid level direction board; Operator observes liquid level direction board, can in time Crude Oil Transportation in tank be gone out; When tank mark breaks down, the dismantle bolt and blind flange that link together with ball float mouth, at outside dismounting integral replacing.
Use time, each device (module) in the utility model is connected on tank body, form entirety dispatch from the factory; All adopt oil field KY25/65 clip fast interface into and out of oil gas interface, only the thimble connector on well head pipeline head out need be linked together during installation, tighten and just can put into production.