CN202338301U - Sand-proof preset underground throttle - Google Patents
Sand-proof preset underground throttle Download PDFInfo
- Publication number
- CN202338301U CN202338301U CN2011204296232U CN201120429623U CN202338301U CN 202338301 U CN202338301 U CN 202338301U CN 2011204296232 U CN2011204296232 U CN 2011204296232U CN 201120429623 U CN201120429623 U CN 201120429623U CN 202338301 U CN202338301 U CN 202338301U
- Authority
- CN
- China
- Prior art keywords
- sand
- lock dog
- sand control
- seal section
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004576 sand Substances 0.000 claims abstract description 37
- 230000001681 protective effect Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 5
- 241000282472 Canis lupus familiaris Species 0.000 description 31
- 210000002445 nipple Anatomy 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
Images
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- Mechanically-Actuated Valves (AREA)
Abstract
The utility model discloses a sand control preset downhole choke ware, be designed for solving the problem that the air cock is blocked up when the gas well goes out the sand of current preset downhole choke ware, mainly include the locking piece axle, the locking cap, the lag, the locking piece body, the seal segment, the shear pin, air cock and sand control cover etc. have the sand control function, in case the sand control cover is by fracturing sand and fracturing fluid cover back completely, can beat the sand control cover, nevertheless can not break away from preset choke ware, so that gas (liquid) flow can pass through from the clearance of sand control cover with preset choke ware, gas-liquid flow can't go upward when avoiding killing the well operation, make the gas well can't carry out the killing well operation of stepping down.
Description
Technical field
The utility model relates to a kind of sand control presetting system underground throttle device, belongs to gas field development technique field.
Background technology
The Su Lige gas field is typically low hole, hypotonic compactness gas reservoir, and for improving well yield, gas well has generally been taked the measure of waterpower SAND FRACTURING TECHNOLOGY before going into operation, if discharge opeing thoroughly can not make residual a large amount of fracturing sands of crack and pit shaft and fracturing fluid after the pressure break.In gas exploitation course; It is all that this fracturing sand and fracturing fluid can be covered in the presetting system underground throttle device entire tool that is installed in the well, causes upstream and downstream can't form passage, and the presetting system restriction choke is blocked; And if the restriction choke salvaging is unsuccessful, can't carry out follow-up kill job.
Summary of the invention
The purpose of the utility model is to provide a kind of sand control presetting system underground throttle device, and it has anti-fracturing sand and fracturing fluid function, is a kind of underground throttle device of afterbody band sand cap.
The concrete technology contents of the utility model is following:
Lock nut and protective jacket are placed in lock dog body top, and the upper and lower part respectively has the lock dog axle of a necking segment to be inserted in the lock dog body that is provided with inner surface recesses, is provided with locating ring in the lock dog axle outer surface groove, is provided with baffle ring between lock dog axle external surface convex shoulder and the lock nut; Spring leaf one end is positioned at protective jacket, and the other end is positioned at lock dog; Connect the last seal section that is with sealing ring in the hole, lock dog body bottom; Have air passing hole on connect the shouldered lower seal section in top in the hole, bottom of seal section; Lower seal section bottom outer surface in that air passing hole is arranged connects sand cap by shear pin, connects valve in the lower seal sector hole, and the valve below is the pressure cap that is threaded with sand cap.
The advantage of the utility model is: restriction choke has sand control function afterbody sand cap; And after in case sand cap covered by fracturing sand and fracturing fluid fully; Just sand cap is destroyed, but can not break away from the presetting system restriction choke, so that gas (liquid) stream can be passed through from the gap of sand cap and presetting system restriction choke; Gas-liquid flow can't be up when avoiding kill job, makes gas well can't carry out next step kill job.
Description of drawings
Fig. 1 is the structural representation in input of sand control presetting system underground throttle device and the salvaging process.
Structural representation when Fig. 2 is sand control presetting system underground throttle device seat envelope.
Fig. 3 is the structural representation after sand control presetting system underground throttle device is played the sand cap success.
The specific embodiment
Embodiment:
Embodiment referring to figs. 1 through 3 pairs of the utility model further specifies:
The method of work in each stage of the utility model is following:
1. throw in and the seat envelope
Insert in the presetting system underground throttle device with special use input instrument before throwing in and use dowel fixes.During input; Connect special-purpose input instrument and render to the seating nipple of assigned address with steel wire; When V-shaped seal ring 9 closely contacts with the seating nipple seal section and because barrier effect downward jarring can not move down the time, at this moment, owing to push away effect under the special-purpose input instrument; Lock dog axle 1 is moved down with respect to lock dog body 8, and lock dog 7 is pushed in the seating nipple groove by lock dog axle 1.Because lock dog 7 is stuck with the seating nipple inside groove, upwards the pin of special-purpose input instrument and presetting system underground throttle device is cut off in jarring, accomplishes and throws in and the seat envelope.Because locating ring 4 snaps in the inner surface recesses of lock dog body 8, so lock dog axle 1 moves on can be with air-flow.
2, salvage
Connect special-purpose fishing tool with steel wire and be lowered into the presetting system throttle positions; Carry in the time of in special-purpose fishing tool stretches into lock dog axle 1 chamber; Lock dog axle 1 is with respect to moving on the lock dog body 8 at this moment, because spring leaf 6 compression lock dogs 7 make it get back to lock dog axle 1 bottleneck, lock dog 7 place's external diameters are less than the seating nipple internal diameter; Lock dog body 8 is salvaged successfully with moving on the lock dog axle 1.Because the effect of baffle ring 3, on when carrying lock dog body 8 can not separate with lock dog axle 1.
3, destroy sand cap
After sand cap 15 is covered by fracturing sand and fracturing fluid fully; When the air-flow upstream and downstream can't form passage; Connect the special-purpose instrument that hits down with steel wire and hit under being lowered into the presetting system throttle positions and stretching in its chamber, shear pin 13 quilts are cut off, and seal section 11 moves down together with valve 12, pressure cap 14, sand cap 15; When the top convex shoulder of seal section 11 is stopped by seal section 10 interior steps instantly; Seal section 11 stops to move down and hangs on the presetting system restriction choke; This moment, seal section 11 contacted with the air passing hole of seal section 10 fully; Gas (liquid) stream will flow to downstream through two air passing holes and presetting system restriction choke inner chamber, plays the sand cap success.
Claims (1)
1. sand control presetting system underground throttle device is characterized in that:
Lock nut (2) and protective jacket (5) are placed in lock dog body (8) top; The upper and lower part respectively has the lock dog axle (1) of a necking segment to be inserted in the lock dog body (8) that is provided with inner surface recesses; Be provided with locating ring (4) in lock dog axle (1) outer surface groove, be provided with baffle ring (3) between lock dog axle (1) external surface convex shoulder and the lock nut (2); Spring leaf (6) one ends are positioned at protective jacket (5), and the other end is positioned at lock dog (7); Connect the last seal section (10) that is with sealing ring (9) in lock dog body (8) hole, bottom; Have air passing hole on connect the shouldered lower seal section in top (11) in the hole, bottom of seal section (10); Connect sand cap (15) in lower seal section (11) bottom outer surface that air passing hole is arranged by shear pin (13), connect valve (12) in lower seal section (11) hole, valve (12) below is the pressure cap (14) that is threaded with sand cap (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204296232U CN202338301U (en) | 2011-11-03 | 2011-11-03 | Sand-proof preset underground throttle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204296232U CN202338301U (en) | 2011-11-03 | 2011-11-03 | Sand-proof preset underground throttle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202338301U true CN202338301U (en) | 2012-07-18 |
Family
ID=46486994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204296232U Expired - Lifetime CN202338301U (en) | 2011-11-03 | 2011-11-03 | Sand-proof preset underground throttle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202338301U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089581A (en) * | 2014-05-14 | 2015-11-25 | 中国石油天然气股份有限公司 | Downhole flow control device and process method for large-pipe-diameter gas well |
| CN111075407A (en) * | 2019-12-18 | 2020-04-28 | 中国石油天然气股份有限公司 | Gas well full life cycle downhole throttling production device and use method thereof |
-
2011
- 2011-11-03 CN CN2011204296232U patent/CN202338301U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089581A (en) * | 2014-05-14 | 2015-11-25 | 中国石油天然气股份有限公司 | Downhole flow control device and process method for large-pipe-diameter gas well |
| CN105089581B (en) * | 2014-05-14 | 2018-08-14 | 中国石油天然气股份有限公司 | Downhole flow control device and process method for large-pipe-diameter gas well |
| CN111075407A (en) * | 2019-12-18 | 2020-04-28 | 中国石油天然气股份有限公司 | Gas well full life cycle downhole throttling production device and use method thereof |
| CN111075407B (en) * | 2019-12-18 | 2024-01-30 | 中国石油天然气股份有限公司 | Underground throttling production device for gas well full life cycle and application method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120718 |
|
| CX01 | Expiry of patent term |