CN201190546Y - Backing type suspension unit special for release - Google Patents
Backing type suspension unit special for release Download PDFInfo
- Publication number
- CN201190546Y CN201190546Y CNU200820020060XU CN200820020060U CN201190546Y CN 201190546 Y CN201190546 Y CN 201190546Y CN U200820020060X U CNU200820020060X U CN U200820020060XU CN 200820020060 U CN200820020060 U CN 200820020060U CN 201190546 Y CN201190546 Y CN 201190546Y
- Authority
- CN
- China
- Prior art keywords
- main body
- central tube
- suspension main
- suspension
- center pipe
- 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 - Fee Related
Links
Images
Abstract
The utility model discloses a releasing special retrievable suspension device used for the oil industry, which is used in the acid fracturing construction and the high-pressure filling sand control construction and enhances the success rate of the releasing operation. The suspension device comprises a suspension main body. The inside diameter of the suspension main body is provided with a clamp groove, the outside diameter of a center pipe is provided with a lock block, the suspension main body is matched with the center pipe, and a pressure cap is installed between the suspension main body and the center pipe. When releasing is needed, a pipe column is lifted upward to rotate, and the lock block of the center pipe can quit from the insides of the clamp groove of the suspension main body having simple and reliable operation. The pipe column is lowered downward, and the center pipe as well as the suspension main body can be separated, thereby the sealing and the moving functions of the center pipe on the suspension main body are realized, and the success of the underground releasing operation is ensured. The utility model has the advantages of simple operation and reliable work, and efficiently lowers the production cost.
Description
Technical field
The utility model belongs to the downhole tool of oil exploitation, and the special-purpose reversible suspension arrangement of particularly giving up uses in the construction of acid fracturing, high-pressure packing sand-control, improves the give up success rate of operation of down-hole.
Background technology
Offshore oilfield is in acid fracturing, high-pressure packing sand-control construction at present, the acid fracturing that well head uses, the hanger of high-pressure packing sand-control tubing string move down because of tubing string links closely when the down-hole back-off is given up, or during movable tubing string pressure release deblocking, the permanent position overslaugh of hanger the scope of activities of tubing string, bad giving up or the problem of stiff tubing string often taken place, can cause the sand control failure when serious, cause serious economy loss.The hanger that generally uses is made up of cone and exterior seal ring now, and effect is to hang down-hole string, Seal Oil cover annular space.This hanger can only be connected on the tubing string, and proposing the interior tubing string of well could lay down hanger.If tubing string sets or meet card in the well, then hanger is carried to be come out.
Summary of the invention
The purpose of this utility model is a kind of special-purpose reversible suspension arrangement of giving up of design, makes suspension arrangement easy to operate, improves the give up success rate of operation of down-hole, reduces production costs.
The purpose of this utility model is achieved in that the special-purpose reversible suspension arrangement of giving up comprises the suspension main body, the internal diameter that hangs main body is provided with draw-in groove, the external diameter of central tube is provided with fixture block, hangs main body and cooperates with central tube, between suspension main body and central tube pressure cap is housed.
The beneficial effects of the utility model are: in the time of in the central tube fixture block is stuck in the draw-in groove that hangs main body, the central tube fixture block is that rigidity contacts with hanging the main body draw-in groove, and therefore, when the utility model was installed in the well head tubing head, this device can bear tubing string weight.The upper lifting pipe post rotates 1/4 to 1/2 circle when needs are given up, and the central tube fixture block is withdrawed from from hang the main body draw-in groove, and operation is simple and reliable.Transfer tubing string just can with central tube and hang body portion from, hanging main body does not influence and hinders central tube and is connected the activity of tubing string, has realized that central tube is hanging sealing and mobile function on the main body, guarantees the give up success of operation of down-hole.Have characteristics simple to operate, reliable operation, effectively reduce cost of production, economic benefit is obvious.
Description of drawings
Fig. 1 is the main sectional view of the utility model embodiment.
Fig. 2 is that the A-A of the utility model embodiment is to cut-away view.
The specific embodiment
Below in conjunction with embodiment the utility model is done further detailed description: referring to accompanying drawing 1 and accompanying drawing 2, the special-purpose reversible suspension arrangement of giving up, comprise and hang main body 4, the internal diameter that hangs main body 4 is provided with draw-in groove, the external diameter of central tube 1 is provided with fixture block, hang main body 4 and cooperate, between suspension main body 4 and central tube 1, pressure cap 2 is housed with central tube 1.The draw-in groove that hangs main body 4 internal diameters is, the vertical slot of up/down perforation corresponding with the fixture block position of central tube 1 and the annular groove that is communicated with this vertical slot.The top cylindrical that hangs main body 4 is equipped with sealing ring and conforms to the interior toroidal of well head tubing head, and the annular groove top of its internal diameter is provided with step, and seal 3 and pressure cap 2 are installed, and guarantees the inside and outside sealing of suspension arrangement.Seal 3 can also guarantee that central tube 1 no longer resets after withdrawing from the draw-in groove that hangs main body 4 simultaneously.The profile of central tube 1 fixture block, size are all corresponding with the draw-in groove that hangs main body 4.
Before going into the well, the central tube 1 of this suspension arrangement is turned to the vertical slot position that hangs main body 4 draw-in grooves, install cylindrical sealing ring and seal 3, compress pressure cap 2, guarantee the interior external seal of suspension arrangement.This suspension arrangement is connected on the top of last root running string, and top is connected with tubing head, the effect of playing connection, hanging the underground work tubing string at well head.The good former suspending weight of record, good this suspension arrangement of seat, the jackscrew of tight well head four-way compresses this suspension arrangement, carries out normal job execution.After construction finishes, unclamp the jackscrew of well head four-way, remove the restriction to this suspension arrangement, the upper lifting pipe post lacks 3 to 5kN than former suspending weight, makes this suspension arrangement be in pressured state a little.Positive tube post 1/4 to 1/2 circle withdraws from the fixture block of central tube 1 from the annular groove that hangs main body 4, the fixture block of central tube 1 is corresponding with the vertical slot that hangs main body 4.Under the effect of tubing string deadweight, when weight indicator is shown as former suspending weight, show that the fixture block of central tube 1 withdraws from from hang main body 4, central tube 1 separates with suspension main body 4.Because the friction effect of seal 3 hangs the draw-in groove of main body 4 and the fixture block of central tube 1 and no longer resets, the back-off that can carry out next step is given up or the operation of movable tubing string.
Claims (4)
1, the special-purpose reversible suspension arrangement of giving up, comprise and hang main body (4) that it is characterized in that the internal diameter that hangs main body (4) is provided with draw-in groove, the external diameter of central tube (1) is provided with fixture block, hang main body (4) and cooperate, between suspension main body (4) and central tube (1), pressure cap (2) is housed with central tube (1).
2, the special-purpose reversible suspension arrangement of giving up according to claim 1, the draw-in groove that it is characterized in that hanging main body (4) internal diameter are, the vertical slot of up/down perforation corresponding with the fixture block position of central tube (1) and the annular groove that is communicated with this vertical slot.
3, the special-purpose reversible suspension arrangement of giving up according to claim 1 is characterized in that the annular groove top that hangs main body (4) internal diameter is provided with step, installs seal (3) and pressure cap (2).
4, the special-purpose reversible suspension arrangement of giving up according to claim 1 and 2 is characterized in that the profile, size of central tube (1) fixture block is all corresponding with the draw-in groove that hangs main body (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820020060XU CN201190546Y (en) | 2008-03-31 | 2008-03-31 | Backing type suspension unit special for release |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820020060XU CN201190546Y (en) | 2008-03-31 | 2008-03-31 | Backing type suspension unit special for release |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201190546Y true CN201190546Y (en) | 2009-02-04 |
Family
ID=40334706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820020060XU Expired - Fee Related CN201190546Y (en) | 2008-03-31 | 2008-03-31 | Backing type suspension unit special for release |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201190546Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418487A (en) * | 2011-12-22 | 2012-04-18 | 上海神开石油化工装备股份有限公司 | Underwater wellhead combined tripping-in test tool |
| CN101550810B (en) * | 2009-05-08 | 2012-12-12 | 深圳市远东石油钻采工程有限公司 | Outer suspension positioning mechanism of an underwater cutting tool |
| CN106869838A (en) * | 2017-03-23 | 2017-06-20 | 中国石油集团西部钻探工程有限公司 | Hydraulic release device |
-
2008
- 2008-03-31 CN CNU200820020060XU patent/CN201190546Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101550810B (en) * | 2009-05-08 | 2012-12-12 | 深圳市远东石油钻采工程有限公司 | Outer suspension positioning mechanism of an underwater cutting tool |
| CN102418487A (en) * | 2011-12-22 | 2012-04-18 | 上海神开石油化工装备股份有限公司 | Underwater wellhead combined tripping-in test tool |
| CN106869838A (en) * | 2017-03-23 | 2017-06-20 | 中国石油集团西部钻探工程有限公司 | Hydraulic release device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201486515U (en) | Switch type releasing packer | |
| CN104989314B (en) | Mud line production tree and its installation method under water | |
| CN103485744B (en) | Directional well seperated layer water injection righting type packer | |
| CN201396103Y (en) | Packer | |
| CN201190546Y (en) | Backing type suspension unit special for release | |
| CN101392633B (en) | Mechanical and hydraulic double-acting expansion sieve tube hanger | |
| CN202673211U (en) | Tie-back inserting sealing tail pipe hanger | |
| CN201214997Y (en) | Metal seal double tube christmas tree wellhead device | |
| CN204984329U (en) | Built -in coiled tubing hanger | |
| CN201474678U (en) | Sand control pipe string for sand washing and packing | |
| CN104879097A (en) | Gas well production string provided with double parallel pipes | |
| CN203161142U (en) | Anti-fall valvular slip hydraulic hanging packer | |
| CN202047770U (en) | Bidirectional locking hanger | |
| CN2861470Y (en) | Airtight power expansion packer | |
| CN100572742C (en) | Hydraulic expansion type screen pipe hanger | |
| CN104879098B (en) | A kind of concentric double pipe gas well liquid loading tubing string | |
| CN203476263U (en) | Coiled tubing speed tubular column hanger | |
| CN201050326Y (en) | Rotary type oil pipe high pressure plugging device | |
| CN206458392U (en) | A kind of safe and efficient wellhead assembly | |
| CN109441390A (en) | A kind of 36 cun of monotubular double-wellhead extracting device of oil | |
| CN214464009U (en) | Tail pipe tie-back sealing tool | |
| CN205422628U (en) | But water inflation packer is met to backwash well | |
| CN208950555U (en) | One kind, which is sealed up, adopts lower integrated chemoprevention sandpipe column | |
| CN201106435Y (en) | Separate-layer fracturing slide bushing type packer | |
| CN2844394Y (en) | A kind of completion mechanical type swivel joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090204 |