CN202544817U - Crude oil dissolved gas underground collection device - Google Patents
Crude oil dissolved gas underground collection device Download PDFInfo
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- CN202544817U CN202544817U CN2012200358198U CN201220035819U CN202544817U CN 202544817 U CN202544817 U CN 202544817U CN 2012200358198 U CN2012200358198 U CN 2012200358198U CN 201220035819 U CN201220035819 U CN 201220035819U CN 202544817 U CN202544817 U CN 202544817U
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Abstract
The utility model provides a crude oil dissolved gas underground collection device. The crude oil dissolved gas underground collection device comprises two sets of collection devices respectively for collecting the dissolved gas above and below a pump, wherein suitable collection devices are selected for different oil wells. The collection device above the pump collects the gas flowing into an oil pipe through a one-way valve by utilizing a sealing rubber barrel to seal an oil sleeve annular space near a well opening; a high-pressure well washing liquid enables the sealing rubber barrel to shrink inwards and go downwards continuously to drive a sealing sleeve to seal the one-way valve while the well washing process, so that the well washing liquid cannot enter into the oil pipe through the one-way valve, and successful well washing can be guaranteed; when measurement is performed on a movable liquid level, the oil sleeve annular space at the upper part of the sealing rubber barrel is pressurized, a floating valve moves downwards, and the inner hole of the sealing rubber barrel is opened, thereby forming an acoustic propagation channel. The collection device for collecting the dissolved gas under the pump collects the gas entering in the pump by utilizing a packer to seal the oil sleeve annular space under the pump; and the liquid enters into the oil sleeve annular space through an oil sleeve through valve above the packer to form a movable liquid level. The two sets of collection devices have no influence to daily maintaining work of the oil well such as well washing and liquid level measurement.
Description
Technical field
The utility model relates to the solution gas collection technique in the crude oil manufacturing process, specifically crude oil solution gas down-hole gathering-device.
Background technology
Contain a great deal of dissolved natural gas in the crude oil, in recovery process, these solution gas can evaporate the formation free gas with gas form gradually.The part of these free gas can be extracted out by oil well pump with well liquid, and remainder then is collected in the oil jacket annular space.Be stored in the solution gas in the sleeve pipe in a large number, can oppress well fluid level and crude oil production is produced considerable influence.Traditional processing mode is to open sleeve gate to enter in the atmosphere, not only causes the waste of resource, but also atmosphere is caused severe contamination.
Present existing crude oil solution gas collection process technology is many, and wherein invention comprises three of CN 101871335 A, CN 101705805 A, CN 101915074 A etc.; Utility model comprises five of CN 2811563, CN 201778783U, CN 201943669U, CN 201714356U, CN 201377302 etc.; Non-patent literature comprises the three technology that people such as Lian Huosheng, Dai Xusheng and Wang Xuemei successively introduce in the magazine document.
The method that all these crude oil solution gas are collected can be divided into the ground collection and dual mode is collected in the down-hole, all belongs to the ground collection mode, although there is difference in the concrete device that adopts of these collection techniques, all has the deficiency that is vulnerable to artificial destruction.
In non-patent literature, two kinds of technology that Lian Huosheng, Dai Xusheng introduced also belong to the ground collection mode.People such as Lian Huosheng have introduced the technology with ball-and-seat recovery of casing gas at the 76-80 page or leaf of " oil drilling technology " 1994 the 6th phases.This technology is connected in ball-and-seat between flow line and the outlet of sleeve pipe annular space, so that recovery of casing gas.This belongs to this method solution gas is carried out a kind of technology that collect on ground, is adopted by the on-the-spot unit in more oil field, but has the degree of filling that can influence oil well pump, reduction pump efficiency and be vulnerable to deficiency such as artificial destruction.Dai Xusheng has introduced portable well casing gas recovery device at the 19-20 page or leaf of " Worker's Univ. Shengli Oil Field's journal " the 1st phase in 2005; This device solves oil jacket be communicated with to build the pressure and casing pressure risen influence the problem of deep well pump ordinary production, the while has also been avoided the waste of natural gas resource.This technology also belongs to the ground collection mode; Though it has realized effective recovery of crude oil solution gas, has increased equipment investment and behavior adjustment management, complicated wellhead equipment makes the everyday devices management difficulty increase; And this mode is not suitable for open-air production to be used, and limitation is bigger.
Have only people such as Wang Xue plum to belong to the down-hole gathering-device of solution gas at a kind of oil jacket communication type washing well anti-theft gaseous device of the 55-56 page or leaf introduction of " petroleum machinery " 2005 the 8th phases at present.This device can realize that surface casing pressure is zero, has reached the anti-theft gaseous purpose, and has eliminated the influence of gas to pump efficiency effectively, can also directly carry out the anti-flushing well operation.This device adopts the mode of highly pressurised liquid compression one-way sealing packing element leakproof one-way valve to guarantee that clean-out service carries out smoothly in washing well process, but after using this device this important conventional parameter of energy measurement well fluid level not, so also impracticable in producing.
In view of this, to the problems referred to above, propose a kind of reasonable in design and effectively improve the crude oil solution gas down-hole gathering-device of above-mentioned disappearance.
Summary of the invention
The purpose of the utility model is to provide crude oil solution gas down-hole gathering-device; Having solved present domestic solution gas gathering-device still exists meeting reduction pump efficiency, is subject to artificial destruction, influences problems such as clean-out service and measurement producing fluid level; Under the prerequisite that does not influence pumpingh well output and conventional maintenance operation, realize efficient, the safe collection of solution gas.
In order to reach above-mentioned purpose, the utility model provides crude oil solution gas down-hole gathering-device, comprises gathering-device under the crude oil dissolving air pump that is installed in oil well pump below and/or is installed in gathering-device on the crude oil dissolving air pump of oil well pump top; Said oil well pump is arranged in the oil pipe, and the oil pipe outside is a sleeve pipe, forms annular space between said sleeve pipe and the oil pipe and is the oil jacket annular space.
Gathering-device comprises gas-liquid separator, oil jacket communicating valve, packer, gas and liquid collecting device under the said crude oil dissolving air pump; Said gas and liquid collecting device is installed on the oil pipe under the oil well pump, installs packer in the oil jacket annular space above the gas and liquid collecting device between oil pipe and the sleeve pipe; Be provided with gas-liquid separator in the oil pipe above packer, this gas-liquid separator upper end is connected to oil well pump, and the lower end then is connected to the oil jacket annular space of packer top through the oil jacket communicating valve.
Gathering-device comprises cartridge, float trap, sealing shroud, one way valve, gas-liquid separator on the said crude oil dissolving air pump; Said gas-liquid separator is installed on the oil pipe under the oil well pump, and oil well pump above be provided with one way valve near the oil pipe of well head, one way valve is provided with sealing shroud outward, one way valve top is installed on and is the cartridge that horn mouth is opened shape downwards; Be provided with the hole of up/down perforation in the said cartridge, float trap is equipped with in the cartridge below; The float trap upper surface is stained with the annular seal cushion rubber.
Said one way valve is made up of valve body, valve pocket and spool; Have circumferential groove on the valve body cylindrical; The valve body upper surface have downward Kong Bingyu excircle to groove communicate and form the passage that solution gas gets into oil pipe, the corresponding valve body of the residing oil pipe of one way valve upper end surface has air inlet radially.
Said valve body upper surface has two circumferential grooves, divides the proximal ends and axle head far away that are listed in the perforate of end face institute, and two circumferential grooves are installed sealing ring, and spool is carried out end face seal.
Said valve body is connected by screw thread with valve pocket.
Have circumferential groove on the interior circle that said valve body, valve pocket match with oil pipe and sealing ring is installed.
Compared to prior art, the utility model adopts gathering-device under the crude oil dissolving air pump for the less and moisture higher oil well of gas liquid ratio in the crude oil, and the crude oil solution gas all advances pump and can not make interior gas liquid ratio of pump and oil well pump efficiency that bigger variation is arranged; For gas liquid ratio in the crude oil in the bigger and moisture less oil well; All advance pump like the crude oil solution gas and might cause the oil well pump gas lock; Cause pump efficiency to reduce significantly, this type of oil well should adopt on the crude oil dissolving air pump gathering-device to collect, and reduces solution gas and collects the influence to pump efficiency; Simultaneously, two kinds of collection schemes do not influence the daily production management (heat is washed, dosing, producing fluid level measurement etc.) of oil well, thereby realize the whole collections to the crude oil solution gas, reduce the wasting of resources, reduce atmosphere pollution.
Wherein, the gathering-device construction simply meets the technical requirements that oilfield safety is produced under the crude oil dissolving air pump, realizes effective collection of solution gas, and collection efficiency can reach more than 98%, and surface casing pressure is zero.Simultaneously, do not influence the daily production management (well-flushing, dosing, producing fluid level measurement etc.) of oil well.
Wherein, gathering-device has prevented the gas lock of oil well pump for the big oil well of air content on the crude oil dissolving air pump; Improved pump efficiency; And realized effective collection of solution gas, collection efficiency can reach more than 98%, and surface casing pressure is zero; Simultaneously, do not influence the daily production management (well-flushing, dosing, producing fluid level measurement etc.) of oil well.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment (on the pump, the following two kinds of gathering-devices of pump integrated);
Fig. 2 is gathering-device structure construction figure under the utility model embodiment crude oil dissolving air pump;
Fig. 3 is gathering-device structure construction figure on the utility model embodiment crude oil dissolving air pump;
Fig. 4 is the structure chart of gathering-device one way valve on the utility model embodiment crude oil dissolving air pump;
Fig. 5 is the structure chart of gathering-device cartridge on the utility model embodiment crude oil dissolving air pump.
The specific embodiment
Detailed description of relevant the utility model and technology contents, conjunction with figs. are explained as follows, yet accompanying drawing only provides the usefulness of reference with explanation, are not to be used for the utility model is limited.
Referring to Fig. 1, crude oil solution gas down-hole gathering-device comprises gathering-device under the crude oil dissolving air pump that is installed in oil well pump below and/or is installed in gathering-device on the crude oil dissolving air pump of oil well pump top; Said oil well pump is arranged in the oil pipe, and the oil pipe outside is a sleeve pipe, forms annular space between said sleeve pipe and the oil pipe and is the oil jacket annular space.
Referring to Fig. 2, be gathering-device under the pump of the utility model crude oil solution gas down-hole gathering-device, this device mainly comprises elements such as gas-liquid separator 10, oil jacket communicating valve 11, packer 12 and gas and liquid collecting device 13.Be installed on gas and liquid collecting device 13 in oil well pump 9 bottoms; On gas and liquid collecting device 13 tops; Annular space between oil pipe 2 and the sleeve pipe 1 is to install packer 12 in the oil jacket annular space 3; Install gas-liquid separator 10 on packer 12 tops, be installed on oil jacket communicating valve 11 on the gas-liquid separator 10, gas-liquid separator 10 tops link to each other with oil well pump 9.After well liquid flows into sleeve pipe 1 from oil reservoir; Because the shutoff of 12 pairs of oil jacket annular spaces 3 of packer is in gas and liquid collecting device 13 enters into oil pipe 2 together, through the separation of gas-liquid separator 10; Liquid separates with solution gas; Liquid gets into the oil jacket annular space 3 on packers 12 tops through oil jacket communicating valve 11, forms producing fluid level, and the solution gas after gas-liquid separator 10 separates gets into oil well pump 9 with not separated gas-liquid and is pumped down to ground.And when carrying out clean-out service, the flushing fluids in the oil jacket annular space 3 can get into oil pipes 2 through oil jacket communicating valve 11, get into oil well pump 9 again to return to ground, afterwards normal well-flushing.
Referring to Fig. 3, Fig. 4 and Fig. 5; Be the structure principle chart of gathering-device and one way valve on the pump of the utility model crude oil solution gas down-hole gathering-device, this device mainly comprises elements such as cartridge 4, float trap 5, sealing shroud 6, spring 7, one way valve 8 and gas-liquid separator 10.Be installed on gas-liquid separator 10 in oil well pump 9 bottoms; Oil pipe 2 is provided with one way valve 8 near the position of well head, is provided with sealing shroud 6 outside the one way valve 8, and one way valve 8 tops are provided with cartridge 4; Be horn mouth and open shape downwards; Be provided with the hole of up/down perforation in the cartridge 4, float trap 5 is equipped with in the below, and float trap 5 upper surfaces are provided with the annular seal cushion rubber.During oil well production, the gas-liquid mixture that the gas-liquid separator 10 under the pump will get into oil pipe 2 separates, and solution gas is split in the oil jacket annular space 3, and the fluid air content that gets into oil well pump 9 reduces, and has prevented gas lock, has improved pump efficiency; Because cartridge 4 is opened and is close to sleeve pipe 1 wall, the O-ring seal on the float trap 5 blocks through holes 22 in the cartridge 4, and isolated solution gas is by shutoff cartridge below 4 in oil jacket annular space 3; Can not arrive well head; Solution gas constantly gathers in oil jacket annular space 3, when the gas pressure in the oil jacket annular space 3 during greater than the pressure of oil pipe 2 inner fluids, moves on the spool 15; Be that one way valve 8 is opened; The axial hole 19 that outer circumferential slot 20 and the end face of solution gas in the oil jacket annular space 3 on valve body 18 offered, the hole 16 on oil pipe 2 gets into oil pipes 2 inner chambers, realizes that solution gas collects; When the pressure of solution gas in the oil jacket annular space 3 during smaller or equal to the oil liquid pressure in the oil pipe 2; Spool 15 is under gravity and oil pipe 2 inner fluid pressure effects; To moving down, compress the sealing ring 17 of valve body 18 upper surfaces, the axial hole 19 that valve body 18 upper surfaces are opened seals; Be that one way valve 8 is closed, the fluid in the oil pipe 2 can't get into oil jacket annular space 3; When carrying out clean-out service, flushing fluid injects oil jacket annular space 3 by well head, and cartridge 4 is shunk under pressure, produces the slit with sleeve pipe 1 inwall; Flushing fluid gets into oil jacket annular space 3 thus and continues descendingly, and sealing shroud 6 moves down under the percussion of fluid, and interior circle seals with the sealing ring at one way valve 8 maximum outside diameter places mutually, seals one way valve 8; Flushing fluid can't get into oil pipe 2 through one way valve 8, and flushing fluid continues descending and get into oil pipe 2 at Pump Suction Nozzle to return ground, accomplishes washing well process; After well-flushing was accomplished, cartridge 4 resiliences were adjacent to sleeve pipe 1 inwall; Again seal oil jacket annular space 3, sealing shroud 6 upwards resets one way valve 8 under spring 7 effects
Expose, recover normal operating conditions; When needs are measured producing fluid level, to 3 pressurizations of cartridge 4 top oil jacket annular spaces, on the cartridge 4 after the pressure balance; Float trap 5 moves down owing to self gravitation, and the through holes 22 in the cartridge 4 are opened, the channel of acoustic wave during as the measurement producing fluid level; Can measure producing fluid level, after producing fluid level was measured and finished, the pressure that discharges cartridge 4 top oil jacket annular spaces 3 was to atmospheric pressure; Because cartridge 4 downforce are big than the top atmospheric pressure, solution gas passes through cartridge 4 through holes 22 in advance to external diffusion, produces airflow in the through hole 22; Float trap 5 moves under the effect of going out of this air-flow gas, with through hole 22 shutoff, returns to normal production.
The above is merely the preferred embodiment of the utility model, and non-in order to limit the claim of the utility model, the equivalence of the patent spirit of other utilization the utility model changes, and all should all belong to the claim of the utility model.
Claims (7)
1. crude oil solution gas down-hole gathering-device is characterized in that, comprises gathering-device under the crude oil dissolving air pump that is installed in oil well pump below and/or is installed in gathering-device on the crude oil dissolving air pump of oil well pump top; Said oil well pump is arranged in the oil pipe, and the oil pipe outside is a sleeve pipe, forms annular space between said sleeve pipe and the oil pipe and is the oil jacket annular space.
2. crude oil solution gas according to claim 1 down-hole gathering-device is characterized in that, gathering-device comprises gas-liquid separator, oil jacket communicating valve, packer, gas and liquid collecting device under the said crude oil dissolving air pump; Said gas and liquid collecting device is installed on the oil pipe under the oil well pump, installs packer in the oil jacket annular space above the gas and liquid collecting device between oil pipe and the sleeve pipe; Be provided with gas-liquid separator in the oil pipe above packer, this gas-liquid separator upper end is connected to oil well pump, and the lower end then is connected to the oil jacket annular space of packer top through the oil jacket communicating valve.
3. crude oil solution gas according to claim 1 down-hole gathering-device is characterized in that, gathering-device comprises cartridge, float trap, sealing shroud, one way valve on the said crude oil dissolving air pump; Oil pipe near well head above the oil well pump is provided with one way valve, and one way valve is provided with sealing shroud outward, and one way valve top is provided with and is the cartridge that horn mouth is opened shape downwards; Be provided with the hole of up/down perforation in the said cartridge, float trap is equipped with in the cartridge below; The float trap upper surface is provided with the annular seal cushion rubber.
4. crude oil solution gas according to claim 3 down-hole gathering-device; It is characterized in that; Said one way valve is made up of valve body, valve pocket and spool; Have circumferential groove on the valve body cylindrical, the valve body upper surface have downward Kong Bingyu excircle to groove communicate and form the passage that solution gas gets into oil pipe, the corresponding valve body of the residing oil pipe of one way valve upper end surface has air inlet radially.
5. crude oil solution gas according to claim 4 down-hole gathering-device; It is characterized in that said valve body upper surface has two circumferential grooves, divide the proximal ends and axle head far away that are listed in the perforate of end face institute; Two circumferential grooves are installed sealing ring, and spool is carried out end face seal.
6. crude oil solution gas according to claim 4 down-hole gathering-device is characterized in that said valve body is connected by screw thread with valve pocket.
7. crude oil solution gas according to claim 4 down-hole gathering-device is characterized in that, has circumferential groove on the interior circle that said valve body, valve pocket match with oil pipe and sealing ring is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200358198U CN202544817U (en) | 2012-02-06 | 2012-02-06 | Crude oil dissolved gas underground collection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200358198U CN202544817U (en) | 2012-02-06 | 2012-02-06 | Crude oil dissolved gas underground collection device |
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| Publication Number | Publication Date |
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| CN202544817U true CN202544817U (en) | 2012-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012200358198U Expired - Fee Related CN202544817U (en) | 2012-02-06 | 2012-02-06 | Crude oil dissolved gas underground collection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244077A (en) * | 2012-02-06 | 2013-08-14 | 中国石油化工股份有限公司 | Crude oil dissolved gas underground collecting apparatus |
| CN110230484A (en) * | 2018-03-06 | 2019-09-13 | 中国石油天然气股份有限公司 | oil extraction mechanism |
-
2012
- 2012-02-06 CN CN2012200358198U patent/CN202544817U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244077A (en) * | 2012-02-06 | 2013-08-14 | 中国石油化工股份有限公司 | Crude oil dissolved gas underground collecting apparatus |
| CN103244077B (en) * | 2012-02-06 | 2017-06-30 | 中国石油化工股份有限公司 | Crude oil solution gas underground collection device |
| CN110230484A (en) * | 2018-03-06 | 2019-09-13 | 中国石油天然气股份有限公司 | oil extraction mechanism |
| CN110230484B (en) * | 2018-03-06 | 2021-08-31 | 中国石油天然气股份有限公司 | Oil extraction mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20130206 |
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| CF01 | Termination of patent right due to non-payment of annual fee |