A kind of oil field well casing gas recovery deviceTechnical field
The utility model relates to associated gas recovery technology in a kind of crude oil recovery process, particularly a kind of oil field well casing gas recovery device.
Background technology
During the crude oil exploitation, production wellhead is made up of oil pipe and sleeve pipe, and crude oil is defeated outside oil pumper is extracted out from oil pipe, and the associated gas of separating out from crude oil in the oil well bottom then is distributed in the sleeve pipe, and this part associated gas is called sleeve pipe gas.
When sleeve pipe atmospheric pressure during greater than well head oil pipe oil pressure, sleeve pipe gas can directly enter oil pipe with Crude Oil Transportation.
When the sleeve pipe atmospheric pressure is lower than well head oil pipe oil pressure, need to carry with being pressed into oil pipe after the supercharging of sleeve pipe gas, owing to lack at present suitable supercharging technology and equipment, cause a large amount of sleeve pipe gas can not be by effective recycling, can only be in the well head burning back emptying that applies a torch.Both wasted the petroleum resources of a large amount of preciousnesses, increased the carbon emission amount again, severe contamination atmospheric environment, also influence oil security production.
Summary of the invention
The purpose of this utility model provides and a kind ofly can effectively reduce wellhead back pressure, improves the oil recovery operating mode, reduces a kind of oil field well casing gas recovery device of oil pumper energy consumption.
The purpose of this utility model is to realize like this, a kind of oil field well casing gas recovery device, it is characterized in that: comprise that synchronous revolving compressor, well head come crude oil, well head to come sleeve pipe gas, valve pipeline and oil pumper, well head comes crude oil to be connected with an inlet port pipeline of synchronous revolving compressor by the first via pipeline that has choke valve, ball valve and strainer; Well head comes sleeve pipe gas to be connected with another inlet port pipeline of synchronous revolving compressor by the second road pipeline that has choke valve, ball valve and strainer; The compression port of export of synchronous revolving compressor is connected with the downstream pipeline by the output pipe that flap valve, surge tank and outlet ball valve are arranged is connected in series.
Be serially connected with safety overflow valve on the described first via pipeline.
Be serially connected with outlet non-return valve respectively on described the second road pipeline and the output pipe.
Surge tank on the described output pipe is connected with the safety overflow valve pipeline of first via pipeline.
A kind of recovery technology based on oil field well casing gas recovery device, its technology is: a part of coming crude oil when well head is by having choke valve, the first via pipeline of ball valve and strainer is connected with an inlet port pipeline of synchronous revolving compressor, the well head of first via pipeline comes the part of crude oil to enter synchronous revolving compressor, carry out airtight to synchronous revolving compressor, lubricate and cooling, another part crude oil is delivered to the downstream pipeline under the oil pumper effect, the sleeve pipe gas of the second road pipeline is pressed into oil pipe and carries after the synchronous revolving compressor supercharging, realize the purpose that the supercharging of sleeve pipe gas is reclaimed.
The utility model has the advantages that: the operation that realizes two kinds of patterns simultaneously in service of synchronous revolving compressor recovery of casing gas: a kind of is that the part of well head crude oil enters compressor, compressor is played airtight, lubricated and cooling effect, most of crude oil is delivered to the downstream under the oil pumper effect, be pressed into oil pipe after the compressed machine supercharging of sleeve pipe gas and carry, realize the purpose that the supercharging of sleeve pipe gas is reclaimed; All crude oil and sleeve pipe gas that another kind of pattern is a well head all enter compressor, and the downstream is transported in compressed machine supercharging.Under this operating mode, oil pumper only plays a part crude oil is imported compressor.And the conveying of crude oil and sleeve pipe gas is finished by compressor.Get power of motor by the reasonable disposition compressor like this, just can increase considerably the defeated radius of collection of oil well crude oil.Thereby be implemented in defeated middle the minimizing or the middle cloth of cancellation station of oilfield collection, simplify oilfield gathering and transportation technology flow process, reduction construction investment and operational management cost.
Description of drawings
The utility model is described in further detail below in conjunction with the embodiment accompanying drawing:
Fig. 1 is the utility model example structure schematic diagram.
Among the figure: 1. synchronous revolving compressor; 2. the second road ball valve; 3. second pipe filter; 4. No. the second flow meter; 5. No. the second flap valve; 6. No. the second choke valve; 7. No. the second pressure meter; 8. first via ball valve; 9. safety overflow valve; 10. first via strainer; 11. first via flow meter; 12. first via choke valve; 13. first via pressure meter; 14. outlet non-return valve; 15. surge tank; 16. delivery gauge; 17. outlet ball valve; 18. well head comes crude oil; 19. well head comes sleeve pipe gas; 20. downstream pipeline; 21. oil pumper; 22, first inlet port; 23, second inlet port; 24, the compression port of export.
The specific embodiment
As shown in Figure 1, a kind of oil field well casing gas recovery device, it is characterized in that: comprise that synchronous revolving compressor 1, well head come crude oil 18, well head to come sleeve pipe gas 19, valve pipeline and oil pumper 21, well head comes crude oil 18 to be connected with first inlet port, 22 pipelines of synchronous revolving compressor 1 by the first via pipeline that has first via ball valve 8, safety overflow valve 9, first via strainer 10, first via flow meter 11, first via choke valve 12, first via pressure meter 13; Well head comes sleeve pipe gas 19 to be connected with second inlet port, 23 pipelines of synchronous revolving compressor 1 by the second road pipeline that has the second road ball valve 2, second pipe filter 3, No. the second flow meter 4, No. the second flap valve 5, No. the second choke valve 6 and No. the second pressure meter 7; The compression port of export 24 of synchronous revolving compressor 1 communicates with downstream pipeline 20 by the output pipe that outlet non-return valve 14, surge tank 15, delivery gauge 16 and outlet ball valve 17 are connected in series.Come between crude oil 18 pipelines oil pumper 21 is arranged at downstream pipeline 20 and well head.
Surge tank 15 on the described output pipe is connected with safety overflow valve 9 pipelines of first via pipeline.
A kind of technology based on oil field well casing gas recovery device, when oil pumper 21 has unnecessary load, the outlet non-return valve 14 of the compression port of export 24 of synchronous revolving compressor 1 and outlet ball valve 17 are opened, well head comes crude oil 18 parts by having first via ball valve 8, safety overflow valve 9, first via strainer 10, the first via pipeline of first via choke valve 12 enters synchronous revolving compressor 1 first inlet port 22, carry out airtight to synchronous revolving compressor 1, lubricate and cooling, well head comes crude oil 18 another part crude oil to be delivered to downstream pipeline 20 under oil pumper 21 effects, the sleeve pipe gas of the second road pipeline mixes with the crude oil of synchronous revolving compressor 1 after synchronous revolving compressor 1 supercharging, is pressed into oil pipe and carries;
When oil pumper does not have unnecessary load, the outlet non-return valve 14 of the compression port of export 24 of synchronous revolving compressor 1 and outlet ball valve 17 are opened, the well head of first via pipeline comes crude oil 18 all to enter synchronous revolving compressor 1, synchronous revolving compressor 1 is carried out airtight, lubricated and cooling, the sleeve pipe gas of the second road pipeline mixes with the crude oil of synchronous revolving compressor 1 after synchronous revolving compressor 1 supercharging, is pressed into oil pipe and carries.
Synchronous revolving compressor has the characteristics such as self-balancing, unit high pressure ratio, compressible band liquid gas and gas-liquid delivery of suction pressure, as the supercharging equipment of the utility model well casing gas, synchronous revolving compressor can overcome effectively traditional compressor in the deficiency of sleeve pipe air pressure aspect contracting.
The utility model separates the back after filtration with oil well part crude oil and imports compressor, does cooling fluid when satisfying compressor seal, lubricated needs and single-stage high voltage than operation and uses, and has saved the original cooling fluid machine of compressor outer circulation cooling system.
Synchronous revolving compressor 1 of the present utility model adopts inlet, the two inlets of air inlet port, the import that a crude oil part of coming with well head enters synchronous revolving compressor 1, synchronous revolving compressor 1 is carried out airtight, lubricated and cooling, another part crude oil is delivered to the downstream under the oil pumper effect, and sleeve pipe gas is pressed into the oil pipe conveying after entering synchronous revolving compressor 1 compressed machine supercharging by another mouth, realizes the purpose that the supercharging of sleeve pipe gas is reclaimed.
In addition, also can adopt another kind of mode to work.All crude oil and the sleeve pipe gas of well head all enter compressor, transport to the downstream through synchronous revolving compressor 1 supercharging.Under this operating mode, oil pumper only plays a part crude oil is imported compressor.And the conveying of crude oil and sleeve pipe gas is finished by synchronous revolving compressor 1.By the power of motor of reasonable disposition compressor, just can increase considerably the defeated radius of collection of oil well crude oil like this.Thereby be implemented in defeated middle the minimizing or the middle cloth of cancellation station of oilfield collection, simplify oilfield gathering and transportation technology flow process, reduction construction investment and operational management cost.