CN2742120Y - Overhead blow out preventer for oil well bailing operation - Google Patents
Overhead blow out preventer for oil well bailing operation Download PDFInfo
- Publication number
- CN2742120Y CN2742120Y CN 200420070609 CN200420070609U CN2742120Y CN 2742120 Y CN2742120 Y CN 2742120Y CN 200420070609 CN200420070609 CN 200420070609 CN 200420070609 U CN200420070609 U CN 200420070609U CN 2742120 Y CN2742120 Y CN 2742120Y
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- Prior art keywords
- blow out
- bailing
- bearing
- gland
- sand
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- Expired - Fee Related
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Abstract
The utility model relates to an overhead blow out preventer for oil well bailing operation used for a sand producer, comprising a fixed pulley 1, a pulley support 2, a bearing gland 3, a screw rod 4, an end gland 5, a thread insert 6, a stripper rubber 7, a gate 8, a fastening bolt 9, a bearing seat 10, a thrust bearing 11, a shell 12 and a handle 13. This overhead blow out preventer has reasonable design and reliable operation. With this overhead blow out preventer for oil well bailing operation, the open bailing operation can be changed to the controllable blow out preventing bailing. This device has the following efficiencies and advantages: 1. This device can prevent the blow out hazard in the process of bailing to avoid the environment pollution and protect the ecologic environment. 2. This device is profitable for the safe production, and can prevent the accidents of the blowout, the explosion and the firing. 3. This device has the functions of blow out preventing and bailing, and can not increase the height of the operated well mouth, so this device is convenient for the installation and the operation of the well mouth.
Description
Technical field:
The utility model relates to a kind of wellhead assembly that sand well drags for the sand operation that is used for, and belongs to workover rig service to oil well instrument class.
Background technology:
Along with oil field development, the prolongation of oil well production time, the sand production problem is outstanding further, has a strong impact on the oil well ordinary production, causes dragging for sand work operations amount and day by day increases.At present, drag for the sand operation field and do not drag for the special-purpose wellhead blowout preventer of sand operation, drag under the sand operation situation at spacious well head, because it is bigger to drag for the sand tool diameter, and the speed of proposing suction on the wire rope is very fast, thus bigger to the suction force of oil reservoir, on the one hand oil reservoir is had the de-plugging effect, on the other hand, open the oil reservoir of suppressing natural gas in case drag for, then cause easily and do not have the control blowout, cause the well site pollution in wide area, also can cause fire incident when serious, oil well production is constituted a serious threat.
Summary of the invention:
The purpose of this utility model is to provide a kind of dragging at oil well can prevent effectively in the sand operation process that gas blowout accident, card from dragging for the free of contamination oil well of sand job safety and dragging for sand operation wellhead blowout preventor.
The utility model is to realize like this.This kind wellhead blowout preventor is made up of fixed pulley, pulley bracket, bearing gland, leading screw, end face gland, silk braid, stripper rubber, flashboard, fastening bolt, bearing support, thrust bearing, housing, handle, the leading screw the inner, the left and right sides that is symmetricly set in the housing is respectively equipped with flashboard, and flashboard is provided with stripper rubber; The leading screw outside, the left and right sides is respectively equipped with bearing support and thrust bearing, and the end is respectively equipped with handle; Left and right sides leading screw is respectively installed with silk braid, and silk braid is inner to be connected with the butt welding of flashboard cambered surface; The silk braid outside is set with the end face gland, and is connected with housing upper flange side with fastening bolt, end face gland outer end, the left and right sides respectively with screw thread be sleeved on bearing support, thrust bearing bearing gland outward is connected; The pulley bracket that is arranged on housing top will drag for the sand instrument by the wire rope that twines on the fixed pulley and be lowered to through the housing mesopore and drag in the sand well in operation well.When oil well drags for the sand operation, this preventer is installed on well head or the operation wellhead blowout preventor, fastening with 12 bolts.This preventer operating process is as follows: before rising, dragging for sandpipe down, righting wheel is laid down, when discovery has the blowout omen, rapidly blowout preventing tubing is hung with tubing string in the well and be connected, then blowout preventing tubing is hung and be seated in well head big four or the preventer, lay down the lifting short circuit, close workover treatment open flow device flashboard, can realize that the prevention gas blowout accident takes place in the rountrip process; After having descended to drag for the sand instrument, righting wheel is packed in the fixing hole, and use bolt, again wire rope is put into the fixed pulley groove, and sealing damper is passed forward, it is not got final product with the wire rope scratching, begin suction then and drag for the sand operation.When the blowout omen is arranged, close the both sides sealing flashboard rapidly, glue core flashboard is held tightly around the wire rope, ejecting fluid in the well can be controlled in the well head, takes the kill-job measure then, descends the step operation again.As pressure is arranged in the well, when needing kill-job, can realize pushing well construction in the external oil of the side opening gate of former production wellhead ninth of the ten Heavenly Stems.When needing the open flow pressure release, sleeve gate is connect the emptying blowdown line, can control the open flow pressure release by flashboard.
The utility model is reasonable in design, and reliable operation is utilized it to make and uncoveredly dragged for the sand operation and become and can control blowout prevention and drag for sand, and this device has following usefulness and advantage: 1, can prevent to drag in the sand process gas blowout accident takes place, avoid environment pollution, preserve the ecological environment; 2, help safety in production, pre-well blowout preventing exploding and firing accident; 3, integrate the blowout prevention function, drag for the sand function, do not increase the well in operation open height, be convenient to that the workman installs and well head is operated.
Description of drawings:
Fig. 1 is a general structure schematic diagram of the present utility model.Fig. 2 is the main part vertical view.
The specific embodiment:
The utility model is provided by following examples, is illustrated below in conjunction with accompanying drawing.
As shown in the figure, the utility model is made up of fixed pulley 1, pulley bracket 2, bearing gland 3, leading screw 4, end face gland 5, silk braid 6, stripper rubber 7, flashboard 8, fastening bolt 9, bearing support 10, thrust bearing 11, housing 12, handle 13, its structure, assembled relation are as follows: left and right leading screw 4 inboards that are symmetricly set in the housing 12 are respectively equipped with flashboard 8, and flashboard 8 is provided with stripper rubber 7; Left and right leading screw 4 outsides are respectively equipped with bearing support 10 and thrust bearing 11, and the end is respectively equipped with handle 13; Be respectively installed with silk braid 6 on the left and right leading screw 4, silk braid 6 the inners are connected with flashboard 8 cambered surface butt welding; Silk braid 6 outsides are set with end face gland 5, and are connected with housing 12 upper flange sides with fastening bolt 9, and left and right end face gland 5 outer ends are connected with the screw thread bearing gland 3 outer with being sleeved on bearing support 10, thrust bearing 11 respectively; The wire rope that the pulley bracket 2 that is arranged on housing 12 tops twines by fixed pulley on it will drag for the sand instrument and be lowered to through housing 12 mesopores and drag in the sand well in operation well.Wherein, housing 12 is made of upper and lower adpting flange and middle part large through-hole, left and right two sides are provided with the rectangle symmetrical holes, upper flange is provided with 6 general circular holes and 6 blind screwholes, lower flange is provided with 12 general circular holes, whole height 220mm, flange diameter 380mm, latus rectum 160mm, maximum length 955mm.End face gland 5 one sides are cylindric, and opposite side is for being evenly equipped with the rectangle gland of a plurality of screws on it.Leading screw 4 the inners are square, and all the other are the circular shaft of smooth column, and the outer end is provided with external screw thread.Flashboard 8 is assembled by left and right two semilune flashboards.Stripper rubber 7 adopts nitrile rubber to make, and it is rectangular seal light face that there are one section circular arc, both sides in its middle part, with the compression moulding of flashboard one.Handle 13 middle parts have square hole, and string has afterburning thick stick.All the other each parts are standard component or existing general part.
Claims (1)
1, a kind of oil well drags for sand operation wellhead blowout preventor, form by fixed pulley (1), pulley bracket (2), bearing gland (3), leading screw (4), end face gland (5), silk braid (6), stripper rubber (7), flashboard (8), fastening bolt (9), bearing support (10), thrust bearing (11), housing (12), handle (13), it is characterized in that: left and right leading screw (4) inboard that is symmetricly set in the housing (12) is respectively equipped with flashboard (8), and flashboard (8) is provided with stripper rubber (7); Left and right leading screw (4) outside is respectively equipped with bearing support (10) and thrust bearing (11), and the end is respectively equipped with handle (13); Be respectively installed with silk braid (6) on the left and right leading screw (4), silk braid (6) is inner to be connected with flashboard (8) cambered surface butt welding; Silk braid (6) outside is set with end face gland (5), and be connected with housing (12) upper flange side with fastening bolt (9), left and right end face gland (5) outer end is connected with the screw thread bearing gland (3) outer with being sleeved on bearing support (10), thrust bearing (11) respectively; The wire rope of the pulley bracket (2) that is arranged on housing (12) top by fixed pulley winding it on will drag for the sand instrument and be lowered to through housing (12) mesopore and drag in the sand well in operation well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420070609 CN2742120Y (en) | 2004-09-09 | 2004-09-09 | Overhead blow out preventer for oil well bailing operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420070609 CN2742120Y (en) | 2004-09-09 | 2004-09-09 | Overhead blow out preventer for oil well bailing operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2742120Y true CN2742120Y (en) | 2005-11-23 |
Family
ID=35477591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420070609 Expired - Fee Related CN2742120Y (en) | 2004-09-09 | 2004-09-09 | Overhead blow out preventer for oil well bailing operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2742120Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102713136A (en) * | 2009-11-25 | 2012-10-03 | 海德里尔美国制造业有限责任公司 | Breech lock mechanisms for blowout preventer and method |
| CN104555530A (en) * | 2014-12-31 | 2015-04-29 | 安东石油技术（集团）有限公司 | Wire winding and feeding machine for packer and winding machine |
| CN105604518A (en) * | 2015-12-22 | 2016-05-25 | 付吉平 | Portable wellhead drop-prevention device and wellhead cable blowout-prevention gate integrated device |
-
2004
- 2004-09-09 CN CN 200420070609 patent/CN2742120Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102713136A (en) * | 2009-11-25 | 2012-10-03 | 海德里尔美国制造业有限责任公司 | Breech lock mechanisms for blowout preventer and method |
| CN102713136B (en) * | 2009-11-25 | 2013-06-26 | 海德里尔美国制造业有限责任公司 | Breech lock mechanisms for blowout preventer and method |
| CN104555530A (en) * | 2014-12-31 | 2015-04-29 | 安东石油技术（集团）有限公司 | Wire winding and feeding machine for packer and winding machine |
| CN105604518A (en) * | 2015-12-22 | 2016-05-25 | 付吉平 | Portable wellhead drop-prevention device and wellhead cable blowout-prevention gate integrated device |
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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 |