CN2439543Y - Composite and three layer automatic adjustable water injection mandrel - Google Patents
Composite and three layer automatic adjustable water injection mandrel Download PDFInfo
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- CN2439543Y CN2439543Y CN 00238933 CN00238933U CN2439543Y CN 2439543 Y CN2439543 Y CN 2439543Y CN 00238933 CN00238933 CN 00238933 CN 00238933 U CN00238933 U CN 00238933U CN 2439543 Y CN2439543 Y CN 2439543Y
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Abstract
The utility model relates to a combined and three-layer automatic-adjusting water distributor, which is composed of a three-layer water distributing core, an outer working barrel of the three-layer water distributor and a packer. The three-layer water distributing core is formed by that the upper end of a valve rod cover is connected in screw thread with a salvaging head and the lower end is connected in screw thread with a leather cup seat, a rod valve is arranged in an upper cavity of a rod valve cover, a lifting leather cup is arranged on the leather cup seat, and the lower end of the leather cup seat is connected in screw thread with a primary water-distributing seal section. The upper end of a reducer union is connected in screw thread with the primary water-distributing seal section, and the lower end is connected in screw thread with a secondary water-distributing seal section. The upper end of the reducer union is connected in screw thread with the secondary water-distributing seal section, and the lower end is connected in screw thread with a tertiary water-distributing seal section. The outer working barrel of the three-layer water distributor is connected in screw thread with a water-distributing casing through an upper contact, a primary water outlet is arranged on the upper contact, and a one-way valve is arranged on a water outlet channel. A check valve cover is connected in screw thread with the upper contact, a check spring is arranged on a check valve, and a secondary water outlet is arranged on the water-distributing casing.
Description
The utility model relates to three layers of self-adjustable water distributor of a kind of combined type, belongs to a kind of downhole water flow regulator that is used for the water injection well seperated layer water injection in the petroleum production engineering of oil field.Be mainly used in the seperated layer water injection of straight well, high-inclination directional well, be applicable to the dispensing well of two layers and three layers injection allocation.
At present, roughly the same technology is more in domestic each oil field, now structure, the handling characteristics with representational two patents is summarized as follows: (1) " double-layer self-adjustable water distributor " patent No. 89107093.1, main feature: 1. the branch water flow passage is arranged on the shell of injection well downhole flow regulator, take material, manufacturing process complexity, 2. can only carry out two layers of dispensing, 3. injection well downhole flow regulator and packer are two instruments independently in separate injection tubing string, have increased construction cost.4. because of not having well-flushing passage, injection well downhole flow regulator water outlet that flap valve is not set on the packer, the booty that causes the packer stuck point to accumulate with the section of going into the well can not return ground with flushing fluid, and these booties can stop up the stratum, increases water injection pressure.5. the water nozzle place is provided with water yield governor motion.6. utilize the ground flow meter, the every pulling of water distribution core once two water nozzles on it blocks the injection allocation amount that can survey one deck.(2) " a kind of intensive injection well downhole flow regulator " patent No. 94204681.1, main feature: 1. I and II branch water flow passage is separately positioned on the injection well downhole flow regulator shell at packer two ends, complex structure, takes material.2. the water nozzle place is not provided with water yield governor motion, and the water nozzle life-span is short.3. one, three grating water-stop sections are respectively at the packer two ends, and water distributing core is long, increased the whole machining accuracy of instrument and pulling difficulty in high angle hole.4. the packer internal slip is located at easy scaling in the well-flushing passage, the deposition booty causes packer deblocking difficulty.When structurally there were some problems in above-mentioned patented technology, its laminated distributor under well testing method did not carry out supporting, has increased the production management difficulty, and influence is applied.
It is a kind of supporting with the zonal testing technology that the purpose of this utility model is to provide, be convenient to production management and help applying, on the basis of taking into account the laminated distributor under well test, the deficiency that overcomes on the existing water distribution tool construction designs, two downhole tools that will have water distribution and packing function are combined into the integrated down-hole dispensing instrument with two kinds of functions, three layers of self-adjustable water distributor of promptly a kind of novel combination type.
The purpose of this utility model is achieved in that three layers of self-adjustable water distributor of combined type, form by three layers of water distribution core, three layers of injection well downhole flow regulator outer working tube and packer, three layers of water distribution core are threaded with the leather cup seat with fishing head, lower end by the valve rod cover upper end, stem valve places in the stem valve cover epicoele, the lifting leather cup is enclosed within on the leather cup seat and by adjusting nut and gives tightly, leather cup seat lower end is threaded with one-level water distribution seal section, reducer union upper end and one-level water distribution seal section, lower end and the threaded connection of secondary water distribution seal section; Reducer union upper end and secondary water distribution seal section, lower end and three grating water-stop section threaded connections; Three layers of injection well downhole flow regulator outer working tube are connected with the water distribution outer casing screw by top connection, in top connection, be provided with the one-level delivery port, and the water outlet stomatodeum is provided with one way valve, the non-return valve bonnet is threaded with top connection, check spring is enclosed within on the flap valve, insert in the non-return valve bonnet, the water distribution shell is provided with the secondary effluent mouth.Three layers of water distribution core X and three layers of injection well downhole flow regulator outer working tube P matched in clearance, the external seal face of water distribution shell inner sealing surface, secondary water distribution seal section is by the section constitution of two different sizes, the step that the cross section of two different sizes forms i.e. the positioning step of three layers of water distribution core X, and three water distribution seal sections are provided with seal.Three grating water-stop sections on three layers of water distribution core are not adorned water nozzle or are directly connected a guiding plug in secondary water distribution seal section bottom, promptly become two layers of water distribution core.Be provided with the water distribution mechanism that has from conditioning function in the three grating water-stop sections, be provided with water nozzle on the top of water nozzle seat, and by water nozzle pressure cap and tight, the water nozzle seat is provided with " O " RunddichtringO, the bottom is provided with the adjusting regulating spring.Used packer is prior art " a kind of soft cassette water injection packer " (patent No. 97243441.0).
The utlity model has following advantage: (1) is owing to the branch water flow passage of three layers of self-adjustable water distributor of combined type is arranged on one-level water distribution seal section and the secondary water distribution seal section, simplify the structure, and the length of water distribution core drops to 900mm from 1500mm, saved material cost, reduced manufacture difficulty, and the shortening of water distribution core helps more using in high-inclination directional well; The organic assembling of (2) three layers of orchestration and " a kind of soft cassette water injection packer " (patent No. 97243441.0) more adapts in high-inclination directional well and uses; (3) owing to be arranged on ball-and-seat in the top connection, return at water injection well and can guarantee in the washing well process that most of flushing fluid enters from the standing valve of tubing string bottom and return well head in the pipe, guarantee the cleaning of the following borehole wall of packer; (4) because the self-adjusting mechanism at water nozzle place, make and inject liquid behind the mouth and formed single-stage again between water distribution seal section delivery port and dam, promptly inject liquid and after the two-stage throttling, enter the stratum.Reduce the operting differential pressure of water nozzle front and back, prolonged the application life of water nozzle, played the effect of regulating pondage, more be applicable to the separate water injection well that interlayer difference is bigger.
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1 always schemes for three layers of self-adjustable water distributor structure of combined type;
Fig. 2 always schemes for three layers of self-adjustable water distributor part-structure of combined type.
Among the figure: three layers of water distribution core of X-, three layers of injection well downhole flow regulator outer working tube of P-, F-packer;
1-fishing head, 2-stem valve, 3-stem valve cover, 4-leather cup seat, 5-adjusting nut, 6-promote leather cup, 7-one-level water distribution seal section, 8-water nozzle pressure cap, 9-water nozzle, 10-water nozzle seat, 11-conciliation spring, 12-top connection, 13-non-return valve bonnet, 14-flap valve, 15-check spring, 16-change Trail joint, 17-water distribution shell, 18-secondary water distribution seal section, 19-seal, 20-three grating water-stop sections, 21-O RunddichtringO.
Three layers of self-adjustable water distributor of the utility model combined type, by three layers of water distribution core X, three layers of injection well downhole flow regulator outer working tube P and packer F form, be with the endoporus fine finishining of packer top connection and inner central tube and be provided with the outer working tube that delivery port becomes injection well downhole flow regulator thereon, be the top connection 12 and the water distribution shell 17 of three layers of self-adjustable water distributor of combined type, three layers of water distribution core X are by valve rod cover 3 upper ends and fishing head 1, the lower end is threaded with leather cup seat 4, stem valve 2 places in stem valve cover 3 epicoeles, lifting leather cup 6 is enclosed within on the leather cup seat 4 and by adjusting nut 5 and gives tightly, leather cup seat 4 lower ends are threaded with one-level water distribution seal section 7, reducer union 16 upper ends and one-level water distribution seal section 7, lower end and 18 threaded connections of secondary water distribution seal section, and on two water distribution seal sections, be respectively equipped with the branch water flow passage, mode has two kinds: a kind of is the wall partition type (see figure 2), and the another kind of a plurality of axially extending bores of brill that adopt are made (through hole will be avoided radially weep hole); Reducer union 16 upper ends and secondary water distribution seal section 18, lower end and 20 threaded connections of three grating water-stop sections; Three layers of injection well downhole flow regulator outer working tube P are threaded with water distribution shell 17 by top connection 12, in top connection 12, be provided with the one-level delivery port, and the water outlet stomatodeum is provided with one way valve, non-return valve bonnet 13 is threaded with top connection 12, check spring 15 is enclosed within on the flap valve 14, insert in the non-return valve bonnet 13, water distribution shell 17 is provided with the secondary effluent mouth.Three layers of water distribution core X and three layers of injection well downhole flow regulator outer working tube P matched in clearance, the external seal face of water distribution shell 17 inner sealing surfaces, secondary water distribution seal section 18 is by the section constitution of two different sizes, the step that the cross section of two different sizes forms i.e. the positioning step of three layers of water distribution core X, and three water distribution seal sections are provided with seal 19.Three grating water-stop sections 20 on three layers of water distribution core X are not adorned water nozzle 9 or are directly connected a guiding plug in secondary water distribution seal section 18 bottoms, promptly become two layers of water distribution core.Be provided with the water distribution mechanism that has from conditioning function in the three grating water-stop sections, be provided with water nozzle 9, and by water nozzle pressure cap 8 and tight, water nozzle seat 10 is provided with " O " RunddichtringO 21 on the top of water nozzle seat 10.
Form three layers of layering tubing string of one-level when downhole tools such as the utility model and packer, down-hole switch, standing valve and screen casings, three layers of water distribution core X are not lowered to tubing string.Packing pit shaft: following intact tubing string, three layers of water distribution core X are by the stagnant water mouth is installed in one-level water distribution seal section 7 and the secondary water distribution seal section 18, after the order of not adorning water nozzle in the three grating water-stop sections 20 has been assembled, drop into the tubing string from well head, three layers of water distribution core X drive descending at gravity and positive flushing fluid, when entering among the outer working tube P of three layers of injection well downhole flow regulator, one-level water outlet and secondary effluent road on it are closed, because of one-level water distribution seal section 7 and secondary water distribution seal section 18 are provided with the branch water flow passage, this moment, whole down-hole string inner chamber formed an airtight container, when the pressure in the tubing string is elevated to certain value, packer set, the two-stage packer is three sections with the pit shaft packing, when pressure rises to the down-hole switch opening pressure, switch opens can be checked tubing string packing situation to the 3rd layer of water filling.Layering water distribution: the well head flow process is fallen to be the anti-flushing well mode, flushing fluid is through the well-flushing passage of packer, fraction is washed and liquid is entered in the pipe by the weep hole on the water distribution shell 17, and most of flushing fluid is entered in the pipe by screen casing, the standing valve of tubing string bottom, goes out three layers of water distribution core X.According to zonal testing result and present required multi-zone flow regulating amount, each layer water nozzle of choosing packed among three layers of water distribution core X, drop into the normal water filling in the back of taking a seat in the well again and promptly begin.Three layers of shunting process: injection water is divided into two strands when flowing to one-level water distribution seal section 7, and wherein the one-level delivery port of one current in water nozzle pressure cap 8, water nozzle 9 and top connection 12 injects first floor; Another strand current are divided into two strands through the annular space of 17 on one-level runner, reducer union 16 and water distribution shell again to secondary water distribution seal section 18 places, wherein one current inject the second layer through water nozzle pressure cap 8, water nozzle 9 and water distribution shell 17 secondary effluent mouths, and the down-hole switch of water nozzle pressure cap 8, water nozzle 9 and the tubing string bottom of another strand current in three grating water-stop sections 20 injects the 3rd layer.
Claims (4)
1. three layers of self-adjustable water distributor of a combined type, form by three layers of water distribution core X, three layers of injection well downhole flow regulator outer working tube P and packer F, it is characterized in that three layers of water distribution core X are threaded with leather cup seat (4) with fishing head (1), lower end by valve rod cover (3) upper end, stem valve (2) places in stem valve cover (3) epicoele, and lifting leather cup (6) is enclosed within leather cup seat (4) and goes up and given tightly by adjusting nut (5); Leather cup seat (4) lower end is threaded with one-level water distribution seal section (7), reducer union (16) upper end and one-level water distribution seal section (7), lower end and secondary water distribution seal section (18) threaded connection; Reducer union (16) upper end and secondary water distribution seal section (18), lower end and three grating water-stop section (20) threaded connections; Three layers of injection well downhole flow regulator outer working tube P are threaded with water distribution shell (17) by top connection (12), top connection (12) is provided with the one-level delivery port, and the water outlet stomatodeum is provided with one way valve, non-return valve bonnet (13) is threaded with top connection (12), check spring (15) is enclosed within on the flap valve (14), insert in the non-return valve bonnet (13), water distribution shell (17) is provided with the secondary effluent mouth.
2. three layers of self-adjustable water distributor of combined type according to claim 1, it is characterized in that three layers of water distribution core X and three layers of injection well downhole flow regulator outer working tube P matched in clearance, the external seal face of water distribution shell (17) inner sealing surface, secondary water distribution seal section (18) is by the section constitution of two different sizes, the step that the cross section of two different sizes forms i.e. the positioning step of three layers of water distribution core X, and three water distribution seal sections are provided with seal (19).
3. three layers of self-adjustable water distributor of combined type according to claim 1, it is characterized in that three grating water-stop sections (20) on three layers of water distribution core X are not adorned water nozzle (9) or directly connect a guiding plug, promptly become two layers of water distribution core in secondary water distribution seal section (18) bottom.
4. three layers of self-adjustable water distributor of combined type according to claim 1, it is characterized in that being provided with the water distribution mechanism that has from conditioning function in the three grating water-stop sections, be provided with water nozzle (9) on the top of water nozzle seat (10), and by water nozzle pressure cap (8) and tight, water nozzle seat (10) is provided with " O " RunddichtringO (21), and the bottom is provided with regulating spring (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00238933 CN2439543Y (en) | 2000-06-22 | 2000-06-22 | Composite and three layer automatic adjustable water injection mandrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00238933 CN2439543Y (en) | 2000-06-22 | 2000-06-22 | Composite and three layer automatic adjustable water injection mandrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2439543Y true CN2439543Y (en) | 2001-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00238933 Expired - Fee Related CN2439543Y (en) | 2000-06-22 | 2000-06-22 | Composite and three layer automatic adjustable water injection mandrel |
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| Country | Link |
|---|---|
| CN (1) | CN2439543Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337871A (en) * | 2011-08-25 | 2012-02-01 | 西安思坦仪器股份有限公司 | Underground adjustable concentric working barrel |
| CN104847319A (en) * | 2015-05-26 | 2015-08-19 | 成都北方石油勘探开发技术有限公司 | Triune quantitative water injection device |
| CN105696987A (en) * | 2016-05-01 | 2016-06-22 | 中国石油化工股份有限公司 | Water distributor for casing patching well |
-
2000
- 2000-06-22 CN CN 00238933 patent/CN2439543Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337871A (en) * | 2011-08-25 | 2012-02-01 | 西安思坦仪器股份有限公司 | Underground adjustable concentric working barrel |
| CN104847319A (en) * | 2015-05-26 | 2015-08-19 | 成都北方石油勘探开发技术有限公司 | Triune quantitative water injection device |
| CN105696987A (en) * | 2016-05-01 | 2016-06-22 | 中国石油化工股份有限公司 | Water distributor for casing patching well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |