CN201202437Y - All-metal valve for oil extraction, well washing and acidizing - Google Patents
All-metal valve for oil extraction, well washing and acidizing Download PDFInfo
- Publication number
- CN201202437Y CN201202437Y CNU2008200802642U CN200820080264U CN201202437Y CN 201202437 Y CN201202437 Y CN 201202437Y CN U2008200802642 U CNU2008200802642 U CN U2008200802642U CN 200820080264 U CN200820080264 U CN 200820080264U CN 201202437 Y CN201202437 Y CN 201202437Y
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- China
- Prior art keywords
- valve
- big
- well
- spring
- urceolus
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- Expired - Fee Related
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Abstract
The utility model discloses an all-metal valve which has three uses which are oil production, well washing and acidification, wherein a small spring, a small poppet valve, a big poppet valve and a big spring are orderly arranged in an outer cylinder from the upper portion to the lower portion, the big spring is equipped with an adjusting mechanism, the adjusting mechanism is arranged in the outer cylinder, and the small poppet valve is equipped with a limit mechanism. The small poppet valve comprises a valve rod and a valve head, wherein the valve rod is sleeved with the small spring, the small spring is clamped by an inner hole bottom surface of the outer cylinder and the valve head, a sealing surface on the valve head is connected with an adaptation sealing surface which is arranged on an inner hole of the big poppet valve, an outer poppet surface of the big poppet valve is connected with the adaptation sealing surface which is arranged on the inner hole of the outer cylinder, and the big spring is clamped by the big poppet valve and the adjusting mechanism. The all-metal valve can meet three functions of a vertical well, an inclined well and a horizontal well, which are the oil production, the well washing and the acidification, the structure is simple and compact, the process and the use are convenient, a liquid channel is large, an all-metal sealing mode is used, the sealing is reliable and durable, and the all-metal valve can be placed underground in a long time.
Description
Technical field
The utility model relates to the instrument of a kind of oil well production, well-flushing, acidification technique, relates in particular to the all-metal valve of a kind of oil recovery, well-flushing, acidifying three usefulness.
Background technology
The anti-pollution valve of employed oil well well-flushing in the existing technology for washing well, only can realizing of having recovered the oil and two kinds of functions of well-flushing, guarantee normal oil recovery, the protection stratum exempts from the pollution of flushing fluid in the time of also guaranteeing well-flushing, though what have also can realize acidifying, but still there is following shortcoming: 1, open unstable properties; 2, the opening pressure fluctuation is big; 3, adopt nonmetal parts sealing such as rubber parts, easily aging, temperature influence is big; 4, complex structure, the processing cost height.
The utility model content
The purpose of this utility model is just in order to overcome above-mentioned deficiency of the prior art, and the all-metal valve of a kind of dependable performance, oil recovery simple in structure, well-flushing, acidifying three usefulness is provided.
The utility model is achieved by following technical proposals: the all-metal valve of a kind of oil recovery, well-flushing, acidifying three usefulness, comprise and be provided with the urceolus that is communicated with inside and outside through hole, little spring, little cone valve, big cone valve, big spring are installed in described urceolus from top to bottom successively, described big spring is provided with governor motion, and described governor motion is installed in the described urceolus; Described little cone valve is provided with position-limit mechanism; Described little cone valve comprises valve rod and valve head, is set with little spring on the described valve rod, and described little spring is by the endoporus bottom surface of described urceolus and described valve head cramping; Sealing surface on the described valve head is connected to the adaptive sealing surface that is provided with on the endoporus of described big cone valve mutually; The male cone (strobilus masculinus) of described big cone valve is connected to the adaptive sealing cone that is provided with on the described urceolus endoporus mutually; Described big spring is by described big cone valve and described governor motion cramping.
The position-limit mechanism of described little cone valve comprises spacer pin, and described spacer pin passes the slotted hole that is provided with on the little cone valve, and an end is plugged in a side of described urceolus, and the other end is threaded with the opposite side of urceolus.
Sealing surface on the described conelet valve valve head is a taper seat.
The unthreaded hole matched in clearance of the valve rod of described little cone valve and described urceolus.
Described governor motion comprises the spring shim that joins with described big spring, and described spring shim is adjacent rotatably with the adjusting tube, and described adjusting tube is by being threadedly connected to described urceolus.
The described bottom of regulating tube is provided with the through hole of right-angled intersection.
Described urceolus upper end is provided with internal thread, and the lower end is provided with external screw thread.
The beneficial effects of the utility model are: three kinds of functions of oil recovery, well-flushing, acidifying that can satisfy straight well, inclined shaft, horizontal well: provide the oil reservoir production fluid to arrive the passage on ground when oil well production; the protection oil reservoir is not subjected to the pollution of flushing fluid in the sleeve pipe during well-flushing, provides acid solution to enter the passage on stratum during acidifying.The utility model is simple in structure, compact conformation, and processing, easy to use, it is big to cross the liquid passage, has adopted the all-metal sealing means simultaneously, seal reliably, durable in use, has avoided non-metal workpiece to seal a series of shortcomings of bringing.Can place the down-hole for a long time, satisfy the requirement of oil recovery, well-flushing and acidifying, reduce flow chart, improve operating efficiency.
Description of drawings
Working state structure schematic diagram when Fig. 1 is the utility model oil recovery;
Working state structure schematic diagram when Fig. 2 is the pollution-free well-flushing of the utility model;
Working state structure schematic diagram when Fig. 3 is the utility model acidizing treatment;
Fig. 4 is the complete section shaft side figure of the utility model urceolus;
Fig. 5 is the shaft side figure of the little cone valve of the utility model;
Fig. 6 is the complete section shaft side figure of the big cone valve of the utility model.
Reference numeral: 1, urceolus, 1-1, upper end internal thread, 1-2, unthreaded hole, 1-3, screwed hole, 1-4, slotted hole, 1-5, sealing cone, 1-6, external screw thread, 1-7, lower end internal thread, 2, little cone valve, 2-1, valve rod, 2-2, slotted hole, 2-3, valve head, 3, spacer pin 4, little spring, 5, big cone valve, 5-1, sealing surface, 5-2, male cone (strobilus masculinus), 5-3, big cone valve step surface, 5-4, inner via hole, 5-5, cylindrical anchor ring, 6, big spring, 7, spring shim, 8, regulate tube.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described:
Extremely shown in Figure 6 as Fig. 1, the all-metal valve of a kind of oil recovery of the utility model, well-flushing, acidifying three usefulness, comprise urceolus 1, urceolus 1 is provided with and is communicated with inside and outside slotted hole 1-4, little spring 4, conelet valve 2, big cone valve 5, big spring 6 are installed in urceolus 1 from top to bottom successively, wherein big spring 6 joins with its governor motion, and governor motion is installed in the urceolus 1; Conelet valve 2 is provided with position-limit mechanism; Described conelet valve 2 comprises valve rod 2-1 and valve head 2-3, and little spring 4 is sleeved on the valve rod 2-1, by the endoporus bottom surface of urceolus 1 and valve head 2-3 cramping; The adaptive sealing surface 5-1 that is provided with on the endoporus of sealing surface on the valve head 2-3 and big cone valve 5 joins, adaptive the joining of sealing cone 1-5 that is provided with on the male cone (strobilus masculinus) 5-2 of big cone valve 5 and urceolus 1 endoporus; Big spring 6 is by big cone valve 5 and governor motion cramping.
The position-limit mechanism of described conelet valve 2 comprises spacer pin 3, and described spacer pin 3 passes the slotted hole 2-2 that is provided with on the conelet valve 2, and an end is plugged in a side of described urceolus 1, and the other end is threaded with the opposite side of urceolus 1.
Sealing surface on the described conelet valve valve head 2-3 is a taper seat.
The unthreaded hole 1-2 matched in clearance of the valve rod 2-1 of described conelet valve 2 and urceolus 1.
Described governor motion comprises the spring shim 7 that joins with big spring 6, and spring shim 7 is adjacent rotatably with adjusting tube 8, regulates tube 8 by being threadedly connected to urceolus 1.
The described bottom of regulating tube 8 is provided with the through hole of right-angled intersection.
Described urceolus upper end is provided with internal thread 1-1, and the lower end is provided with external screw thread 1-6.
Urceolus 1 of the present utility model is one columnar structured, its full sectional view as shown in Figure 4, the internal thread 1-1 of urceolus 1 upper end is as the oil pipe box, connect lower body or other instruments of giving up, the external screw thread 1-6 of lower end is used to connect other downhole tools, the valve rod 2-1 matched in clearance of unthreaded hole 1-2 and conelet valve 2 to be setting upright conelet valve 2, even this can guarantee that conelet valve 2 is in inclined shaft or the horizontal well and also can seal reliably; Threaded engagement on screwed hole 1-3 and the spacer pin 3 prevents coming off of spacer pin 3; Slotted hole 1-4 is the fluid course when recovering the oil production and acidizing treatment, and conical seal (contact) face 1-5 cooperates the sealing when finishing pollution-free clean-out service with the male cone (strobilus masculinus) 5-2 of big cone valve 5; Internal thread 1-7 matches with the external screw thread of regulating tube, regulates screwing the pre compressed magnitude that the degree of depth can be adjusted big spring 6, thus the opening pressure when adjusting acidifying.
Step surface 5-3 on the big cone valve 5 of the present utility model is the upper limit plane of big spring 6, and inner via hole 5-4 is the liquid passage excessively of oil recovery, acidifying, the cylindrical anchor ring 5-5 on male cone (strobilus masculinus) 5-2 top and the inner headed face matched in clearance of urceolus 1.
The step surface of spring shim 7 of the present utility model is lower limit planes of big spring, and endoporus is the liquid passage excessively of oil recovery, acidifying.
The through hole of regulating on the tube 8 of the present utility model is used for inserting dwang and rotates and regulate tube 8, screws the opening pressure of the degree of depth when adjusting acidifying thereby regulate screw thread with this; Centre bore is the liquid passage excessively of oil recovery, acidifying.
Metallic seal is adopted in all sealings of the present utility model; No matter urceolus 1 is one or many bodies, and its inside has the interior bevel sealing surface that matches with big cone valve 5; Have on the stack shell of urceolus 1 and be communicated with inside and outside through hole in order to passage as oil recovery and acidifying; Can replace the valve head of conelet valve 2 and be not limited to steel ball be cone valve structure; The distance that conelet valve 2 moves downward is limited, and the mode that can adopt on the valve rod of conelet valve 2 fluting or add step realizes, but is not limited to these modes; If conelet valve 2 adopts steel ball structure, its distance that moves downward is limited also within claim; Possess metallic seal that relies on external surface and the metallic seal function that relies on inner surface on the big cone valve 5 simultaneously; The decrement of big spring 6 can manual adjustments when adapting to acidifying different opening pressure.
Operating principle of the present utility model is:
Recover the oil when producing, under the castering action of oil recovery electric pump, the pressure on conelet valve 2 tops is significantly less than the pressure of bottom, it makes a concerted effort to overcome the compressive force of little spring 4 and the self gravitation of conelet valve 2 makes it move up along the valve rod direction, having formed recovers the oil produces passage, the production of recovering the oil thereby conelet valve 2 is separated with big cone valve 5.
During clean-out service; no matter be positive well-flushing or anti-flushing well; the pressure differential of well-flushing pressure and strata pressure acts on the precompression that the thrust that produces on the big cone valve 5 is not enough to overcome big spring 6; big cone valve 5 can not move down valve open; thereby guarantee that this instrument is in closed condition, protected oil reservoir to avoid the pollution of flushing fluid.
During acidizing treatment, the pressure differential of well-flushing pressure and strata pressure acts on the precompression that the thrust that produces on the big cone valve 5 is enough to overcome big spring 6, and big cone valve 5 moves down and makes big cone valve 5 be separated with conelet valve 2, and the acidifying passage is opened, thereby can carry out acidizing treatment.
The production of the utility model centralized procurement oil, pollution-free well-flushing, acidifying measure three functions are in one, dependable performance, compact conformation.Be lower than the principle of acidifying pressure according to well-flushing pressure, according to concrete well-flushing pressure and acidifying pressure regulating spring pretightning force, place the down-hole for a long time, the operations such as production, pollution-free well-flushing, acidifying of just can recovering the oil then with the to give up all-metal valve of lower body and the oil recovery that connects down thereof, well-flushing, acidifying three usefulness of the form of giving up.The utility model adopts the all-metal sealing, has improved the unlatching reliability and stability of valve, even place its performance of down-hole also influenced hardly for a long time.
Just schematically, any design of being done under the enlightenment of technical solutions of the utility model identical with the utility model all belongs to protection domain of the present utility model to the utility model the foregoing description.
Claims (7)
1. the all-metal valve of an oil recovery, well-flushing, acidifying three usefulness, comprise and be provided with the urceolus that is communicated with inside and outside through hole, it is characterized in that, little spring, little cone valve, big cone valve, big spring are installed in described urceolus from top to bottom successively, described big spring is provided with governor motion, and described governor motion is installed in the described urceolus; Described little cone valve is provided with position-limit mechanism; Described little cone valve comprises valve rod and valve head, is set with little spring on the described valve rod, and described little spring is by the endoporus bottom surface of described urceolus and described valve head cramping; Sealing surface on the described valve head is connected to the adaptive sealing surface that is provided with on the endoporus of described big cone valve mutually; The male cone (strobilus masculinus) of described big cone valve is connected to the adaptive sealing cone that is provided with on the described urceolus endoporus mutually; Described big spring is by described big cone valve and described governor motion cramping.
2. the all-metal valve of oil recovery according to claim 1, well-flushing, acidifying three usefulness, it is characterized in that, the position-limit mechanism of described little cone valve comprises spacer pin, described spacer pin passes the slotted hole that is provided with on the little cone valve, one end is plugged in a side of described urceolus, and the other end is threaded with the opposite side of urceolus.
3. the all-metal valve of oil recovery according to claim 2, well-flushing, acidifying three usefulness is characterized in that, the sealing surface on the described conelet valve valve head is a taper seat.
4. the all-metal valve of oil recovery according to claim 3, well-flushing, acidifying three usefulness is characterized in that, the unthreaded hole matched in clearance of the valve rod of described little cone valve and described urceolus.
5. the all-metal valve of oil recovery according to claim 1, well-flushing, acidifying three usefulness, it is characterized in that, described governor motion comprises the spring shim that joins with described big spring, and described spring shim is adjacent rotatably with the adjusting tube, and described adjusting tube is by being threadedly connected to described urceolus.
6. the all-metal valve of oil recovery according to claim 5, well-flushing, acidifying three usefulness is characterized in that, the described bottom of regulating tube is provided with the through hole of right-angled intersection.
7. the all-metal valve of oil recovery according to claim 1, well-flushing, acidifying three usefulness is characterized in that, described urceolus upper end is provided with internal thread, and the lower end is provided with external screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200802642U CN201202437Y (en) | 2008-04-24 | 2008-04-24 | All-metal valve for oil extraction, well washing and acidizing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200802642U CN201202437Y (en) | 2008-04-24 | 2008-04-24 | All-metal valve for oil extraction, well washing and acidizing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201202437Y true CN201202437Y (en) | 2009-03-04 |
Family
ID=40424751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200802642U Expired - Fee Related CN201202437Y (en) | 2008-04-24 | 2008-04-24 | All-metal valve for oil extraction, well washing and acidizing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201202437Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566153A (en) * | 2019-09-26 | 2019-12-13 | 中海油能源发展股份有限公司工程技术分公司 | reservoir protection device capable of being opened in two directions |
-
2008
- 2008-04-24 CN CNU2008200802642U patent/CN201202437Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566153A (en) * | 2019-09-26 | 2019-12-13 | 中海油能源发展股份有限公司工程技术分公司 | reservoir protection device capable of being opened in two directions |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: No. 25 North Street, Chaoyangmen, Beijing, Dongcheng District: 100010 Co-patentee after: CNOOC Energy Development Co., Ltd. Patentee after: China National Offshore Oil Corporation Address before: No. 25 North Street, Chaoyangmen, Beijing, Dongcheng District: 100010 Co-patentee before: CNOOC Oil Base Group Co., Ltd. Patentee before: China National Offshore Oil Corporation |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090304 Termination date: 20160424 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |