CN202745834U - Preset downhole throttler without rope releasing - Google Patents
Preset downhole throttler without rope releasing Download PDFInfo
- Publication number
- CN202745834U CN202745834U CN 201220337815 CN201220337815U CN202745834U CN 202745834 U CN202745834 U CN 202745834U CN 201220337815 CN201220337815 CN 201220337815 CN 201220337815 U CN201220337815 U CN 201220337815U CN 202745834 U CN202745834 U CN 202745834U
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- throttler
- preset
- seal
- rope
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Abstract
The utility model discloses a preset downhole throttler without rope releasing, which is designed aiming at realizing the non-rope release of the throttler. The preset downhole throttler without rope releasing mainly comprises a fishing head, a lock block, shoulders, a check ring, a connecting section, a seal section, a seal ring, a pressure cap, a seal ring, an air nozzle, a sand-proof cover, a preset working cylinder, a lower hammer and the like, wherein the fishing head is inserted in a body, the lock block is arranged in a radial through groove of the body, the shoulders are arranged on the inner wall and the outer wall of the body, the check ring is connected with the body by a pin, the connecting section is connected with the bottom end of the body, the seal section is connected into a bottom hole of the connecting section, the seal ring is sheathed on the seal section, the pressure cap, the seal ring and the air nozzle are connected with the bottom hole of the seal section, the sand-proof cover is connected with the seal section, the preset working cylinder is connected with oil pipes at the upper end and the lower end, and the lower hammer is provided with a radial fishing groove. The preset downhole throttler without rope releasing falls in the preset working cylinder well preset by means of self weight, and the expanding pipe section of the fishing head is hit by the lower hammer to move downwards and extrude the lock block for jointly implementing sealing together with the seal ring, thereby realizing the release of the throttler. The throttler can realize non-rope release by means of the preset working cylinder and the lower hammer, and is simple to operate and low in cost.
Description
Technical field
The utility model relates to a kind of pre-set type underground throttling device without the rope input, belongs to natural gas well reducing pressure by regulating flow downhole tool technical field.
Background technology
In natural gas extraction, for step-down, throttling and limited production, usually at Wellbore of Gas Wells underground throttle device is installed.Underground throttle device is divided into slip-type underground throttle and pre-set type underground throttling device with setting mode difference.Slip-type underground throttle is difficult to be salvaged, and easily causes down-hole accident, and pre-set type underground throttling device cartridge deflection is little, sealing reliability is good, and the life-span is long, and cartridge in case with preset seating nipple and break away from, its external diameter is easily salvaged when carrying almost without frictional resistance just less than the pit shaft latus rectum.
At present, the input program of pre-set type underground throttling device is: at first be connected downhole tool to be connected with the weighted lever of having steel wire with bumper jar pre-set type underground throttling device, then tool string put into lubricator, with crane lubricator is installed on the well head.Open head valve, test steel wire with well testing truck is lowered to oil pipe with restriction choke and tool string, when arriving projected depth, drop into and preset in the seating nipple, downward jarring tool string again makes the slips of restriction choke open to be stuck in and presets the seating nipple draw-in groove, then jarring tool string upwards, cut off the delivery tool pin, to carry on the tool string to lubricator, lay down shaft mouth anti-blowout pipe after the pressure release, finish the input of pre-set type underground throttling device.
Can find out from top process, pre-set type underground throttling device needs by under the wire rope launching trap, and required vehicle is many, and personnel are many, complicated operation, and the input expense is high.
Summary of the invention
The purpose of this utility model is to provide a kind of pre-set type underground throttling device without the rope input, and this restriction choke need not rope and throws in, and simple to operate, expense is low.
Concrete technical scheme of the present utility model is as follows:
This restriction choke fishing head is inserted in the body, and the fishing head bottom is the undergauge pipeline section, is provided with radially groove with the barrel of the body of this undergauge pipeline section correspondence position, radially is provided with lock dog in the groove.The body middle part is provided with inside and outside wall convex shoulder, and inwall convex shoulder below connects baffle ring by pin, and the body bottom is connected with linkage section.Connect seal section in the linkage section bottom outlet, the outside suit of seal section sealing ring connects in the seal section bottom outlet by pressure cap fixing sealing ring and valve, and the seal section bottom connects sand cap.
Preset seating nipple upper and lower end connected pipes, cylinder inwall middle part is provided with radial groove, and the bottom is the undergauge hole in the cylinder.
Lower hammer external wall of upper portion is provided with the salvaging radial groove.
The utility model restriction choke is realized throwing in without rope by presetting seating nipple and lower hammer, and simple to operate, expense is low.
Description of drawings
Fig. 1 is the pre-set type underground throttling device structural representation of throwing in without rope.
Fig. 2 is lower hammer structural representation.
Structural representation when Fig. 3 is and production setting without the pre-set type underground throttling device of rope input.
The specific embodiment
Further specify referring to figs. 1 through 3 couples of embodiment of the present utility model:
Embodiment:
The pre-set type underground throttling device of throwing in without rope by fishing head 1, body 2, lock dog 3, baffle ring 4, pin 5, linkage section 6, sealing ring 7, seal section 8, sealing ring 9, valve 10, pressure cap 11, sand cap 12, preset seating nipple 13, oil pipe 14 and lower hammer 15 and form:
Fishing head 1 is inserted in the body 2, and fishing head 1 bottom is the undergauge pipeline section, is provided with radially groove with the barrel of the body 2 of this undergauge pipeline section correspondence position, radially is provided with lock dog 3 in the groove.Body 2 middle parts are provided with inside and outside wall convex shoulder, and inwall convex shoulder below connects baffle ring 4, body 2 bottoms and linkage section 6 screwed connections by pin 5.Connection seal section 8 in linkage section 6 bottom outlets, seal section 8 outside suit sealing rings 7 connect sealing ring 9 and the valve 10 fixed by pressure cap 11, seal section 8 bottom outer wall screwed connection sand caps 12 in seal section 8 bottom outlets.
Hammer 15 external wall of upper portion are provided with the salvaging radial groove under the tubular.
The utility model is as follows without the course of work of the pre-set type underground throttling device that rope is thrown in:
1. throw in and preset seating nipple
During lower gas production tubing string, at first will preset seating nipple 13 two ends connected pipes, then will sit well head with arriving projected depth under the oil pipe, close tubing valve.
2. input pre-set type underground throttling device
The seizure throw in catcher that pre-set type underground throttling device is housed is installed on the well head, opens tubing valve, pre-set type underground throttling device is dropped in the well.When entering the oil pipe mouth, lock dog 3 shrinks, and pre-set type underground throttling device comes downwards to the position of presetting seating nipple 13 smoothly with self gravitation, be stuck on the undergauge hole of presetting seating nipple 13 with its outer wall convex shoulder.Unload the seizure throw in catcher, the seizure throw in catcher that lower hammer 15 is housed is installed on the well head, open tubing valve, lower hammer 15 is dropped in the well.The fishing head 1 of the descending and striking pre-set type underground throttling device of lower hammer 15, fishing head 1 is moved down by the relative pre-set type underground throttling device of effect of inertia, cut off pin 5, lock dog 3 is extruded by the hole enlargement pipeline section on fishing head 1 top, stick into and preset in seating nipple 13 inboard wall grooves, simultaneously, sealing ring 7 falls into to preset realizes sealing in the seating nipple 13 undergauge holes, finished the input of underground throttle device, opened tubing valve and can normally produce.
Lock dog 3 presets the length of seating nipple 13 inboard wall grooves greater than the length of lock dog 3, so when fracturing reform, if inboard wall groove enters fracturing sand (not filling up), also can snap in, and successfully realizes setting.
3, salvage pre-set type underground throttling device
Install lubricator, at first connect fishing tool with steel wire and successfully salvage lower hammer 15, and then carry fishing head 1 on the lower steel wire connection fishing tool.Fishing head 1 is with respect to moving on the lock dog 3, because the effect of baffle ring 4, fishing head 1 can not separate with body 2, the undergauge pipeline section of fishing head 1 is got back to again the position of lock dog 3, under the effect of upper lifting force, and lock dog 3 retractions, on carry steel wire pre-set type underground throttling device risen in the lubricator, close tubing valve, lay down lubricator, finish the salvage of pre-set type underground throttling device.
Claims (1)
1. pre-set type underground throttling device of throwing in without rope is characterized in that:
The fishing head of restriction choke (1) is inserted in the body (2), and fishing head (1) bottom is the undergauge pipeline section, is provided with radially groove with the barrel of the body (2) of this undergauge pipeline section correspondence position, radially is provided with lock dog (3) in the groove; Body (2) middle part is provided with inside and outside wall convex shoulder, and inwall convex shoulder below connects baffle ring (4) by pin (5), and body (2) bottom is connected with linkage section (6); Connect seal section (8) in linkage section (6) bottom outlet, the outside suit of seal section (8) sealing ring (7), connect in seal section (8) bottom outlet by pressure cap (11) fixing sealing ring (9) and valve (10), seal section (8) bottom connects sand cap (12);
Preset seating nipple (13) upper and lower end connected pipes (14), cylinder inwall middle part is provided with radial groove, and the bottom is the undergauge hole in the cylinder;
Hammer under the tubular (15) external wall of upper portion is provided with the salvaging radial groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220337815 CN202745834U (en) | 2012-07-12 | 2012-07-12 | Preset downhole throttler without rope releasing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220337815 CN202745834U (en) | 2012-07-12 | 2012-07-12 | Preset downhole throttler without rope releasing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202745834U true CN202745834U (en) | 2013-02-20 |
Family
ID=47705251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220337815 Expired - Fee Related CN202745834U (en) | 2012-07-12 | 2012-07-12 | Preset downhole throttler without rope releasing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202745834U (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 for large-tube-diameter gas well and process method |
| CN105888626A (en) * | 2016-04-19 | 2016-08-24 | 陕西汇丰悦石油科技开发有限公司 | Novel pre-set type underground flow controller |
-
2012
- 2012-07-12 CN CN 201220337815 patent/CN202745834U/en not_active Expired - Fee Related
Cited By (3)
| 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 for large-tube-diameter gas well and process method |
| CN105089581B (en) * | 2014-05-14 | 2018-08-14 | 中国石油天然气股份有限公司 | A kind of Large Diameter Pipeline gas well well flow rate controller and process |
| CN105888626A (en) * | 2016-04-19 | 2016-08-24 | 陕西汇丰悦石油科技开发有限公司 | Novel pre-set type underground flow controller |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130220 Termination date: 20210712 |