CN202194618U - Once filling cement squeezing separator - Google Patents
Once filling cement squeezing separator Download PDFInfo
- Publication number
- CN202194618U CN202194618U CN2011202626613U CN201120262661U CN202194618U CN 202194618 U CN202194618 U CN 202194618U CN 2011202626613 U CN2011202626613 U CN 2011202626613U CN 201120262661 U CN201120262661 U CN 201120262661U CN 202194618 U CN202194618 U CN 202194618U
- Authority
- CN
- China
- Prior art keywords
- filling
- backwash
- sealing devices
- back washing
- slips
- 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
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Abstract
The utility model relates to a once filling cement squeezing separator, which comprises a hydraulic sit sealing device, a safe connector, a central pipe, upper sealing devices, a locking device, a cava anchor, lower sealing devices, a filling device and a back washing device. The lower end of the safe connector is connected with an oil pipe through inner threads and connected with the central pipe through outer threads, the oil pipe is arranged inside the central pipe, filling holes are arranged at the lower end of the central pipe in the circumferential direction, the filling device is arranged on the lower portion of the central pipe and comprises a filling drum and a closing mechanism, the back washing device is arranged at one end close to the safe connector and comprises a back washing connector and a back washing ring, back washing holes are arranged on the back washing connector corresponding to the filling holes in position, a circle of upper sealing devices are arranged at the outer end of the separator below the back washing ring, three circles of lower sealing devices are arranged at the outer end of the filling device, and the locking device and the cava anchor are sequentially arranged from top to bottom between the upper sealing devices and the lower sealing devices. The once filling cement squeezing separator has the advantages that clamp drilling is not apt to happen during underground operation in oil field and oil wells, so that construction working procedures are reduced.
Description
Technical field
The utility model relates to the underground work instrument of oilfield filling, sand control, especially relates to a kind of primary filling squeeze method separator.
Background technology
Packing high pressure primary filling sand control is with gravel in existing technology---quartz sand, take the outer place, cavity of oil gas well payzone pipe and the annular space of sand screen and sleeve pipe to the load fluid of big discharge capacity.Form dynamical sand block barrier through deposition, high pressure compression.In needs carry out the oil gas well of sand control treatment, will comprise packing high pressure primary filling tubing string that plug, sand screen, packing high pressure primary filling instrument, safety joint, resolvability centralizer and oil pipe form down to the precalculated position, base sealed packer; Open fill passage, surface pump group provide high pressure to take the sand flow body, through filling passage entering oil pipe, the sleeve pipe annular space of oil pipe, packing high pressure primary filling instrument; Get into oil reservoir at last, along with the increase gradually that adds the sand amount, the stratum is filled with solid; Pit shaft also is filled with solidly subsequently, and surface pump voltage rise at this moment is high, reach scheduled pressure value after; Stop filling, pump into well-flushing liquid, through the backwash passage of packing high pressure primary filling instrument from oil pipe, sleeve pipe annular space; The flushing of sand in the oil pipe to ground, is accomplished the operation of packing high pressure primary filling.The upper lifting pipe post is just changeing back-off gives up, and the filling duct is closed automatically, and central tube is opened automatically, accomplishes packing high pressure primary filling sand control treatment.Exist bit freezing, backwash passage to be prone to technical problems such as obstruction.
Summary of the invention
The problem that the utility model will solve provides a kind of primary filling squeeze packer, has anti-bit freezing, blocks and can just change the characteristics that oil pipe is given up just in case bit freezing or backwash passage occur, especially is fit to the underground work of oilfield filling, sand control.
For solving the problems of the technologies described above; The technical scheme that the utility model adopts is: comprise hydraulic setting device, safety joint, central tube, upper sealing device, locking device, slips anchoring, lower sealing device, device for filling and backwash device, said safety joint lower end internal thread connects oil pipe, and external screw thread connects central tube; Said oil pipe is positioned at central tube inside; The lower end circumferencial direction of central tube has pack hole, and said device for filling is positioned at the bottom of central tube, comprises filling tube and closing organ; Said backwash device is positioned at the end near safety joint; Comprise backwash joint and backwash ring, relative with the pack hole position backwash hole that has on the backwash joint, the outer end of separator is provided with all upper sealing devices under the said backwash ring; The outer end of device for filling is provided with three circle lower sealing devices, is provided with locking device and slips anchoring between said upper sealing device and the lower sealing device from top to bottom successively.Said safety joint is provided with positive left-hand thread screw thread.Said backwash hole is connected with backwash ring valve.Said slips anchoring comprises slips, slips cone and slips urceolus.
Advantage and the good effect that the utlity model has are: owing to adopting technique scheme, be difficult for taking place bit freezing during oilfield underground work, give up just in case generation bit freezing or backwash passage obstruction can just change oil pipe, and form releasing gadget; Reduce the construction operation program, improved the oil well operating efficiency.
Description of drawings
Fig. 1 is the phantom of the utility model
Among the figure:
1, safety joint 2, backwash ring 3, upper sealing device
4, locking device 5, slips anchoring 6, lower sealing device
7, device for filling
The specific embodiment
As shown in Figure 1, the utility model primary filling squeeze method separator comprises hydraulic setting device, safety joint 1, central tube, upper sealing device 3, locking device 4, slips anchoring 5, lower sealing device 6, device for filling 7 and backwash device; Said safety joint 1 lower end internal thread connects oil pipe; External screw thread connects central tube, and said oil pipe is positioned at central tube inside, and the lower end circumferencial direction of central tube has pack hole; Said device for filling 7 is positioned at the bottom of central tube; Comprise filling tube and closing organ, said backwash device is positioned at the end near safety joint, comprises backwash joint and backwash ring 2; Relative with the pack hole position backwash hole that has on the backwash joint; The outer end of separator is provided with all upper sealing devices under the said backwash ring 2, and the outer end of device for filling 7 is provided with three circle lower sealing devices 6, is provided with locking device 4 and slips anchoring 5 between said upper sealing device 3 and the lower sealing device 6 from top to bottom successively.Said safety joint 1 is provided with positive left-hand thread screw thread.Said backwash hole is connected with backwash ring 2 valves.Said slips anchoring 5 comprises slips, slips cone and slips urceolus.
The course of work of this instance: fluid pressure is converted into downward motive force through the hydraulic setting device; Pass to the packer centrum; The packer centrum moves downward promotion slips anchoring 5 and expands outwardly; Be anchored to internal surface of sleeve pipe, locking device 4 gets into locking state, and packing element is compressed radial dilatation and has sealed oil sets annular space; Continue to suppress, high-pressure work liquid is pushed device for filling 7 target approach well sections open.Device for filling 7 is positioned at the central tube bottom; Be made up of filling tube and closing organ, central tube lower end circumferencial direction has pack hole, the pressurization of packer setting continued; Pack hole is opened, and packing fluid gets into oil jacket annular space enforcement filling from oil pipe through the pack hole of central tube lower end pack hole and device for filling 7.Backwashing mechanism is made up of backwash joint and backwash ring 2 on device for filling 7 tops, and filling from the backwash liquor that oil jacket annular space pump is entered, through the backwash hole of backwash joint, is opened backwash ring 2 after accomplishing, and gets into pack hole, and is clean the back-up sand backwash more than the pack hole.And close pack hole voluntarily, guarantee the not pressure release of filling high pressure mortar, under high pressure conditions, accomplish process of setting all the time, both guaranteed fixed closely knit with avoid profit gas cut evil and dilute.Closing well is accomplished the initial set process.Propose tubing string in the well, continue Hou Ningzhi and reach predetermined strength.The packer upper end is positive left-hand thread screw thread safety joint 1, gives up just in case generation bit freezing or backwash passage obstruction can just change oil pipe, and forms releasing gadget.Being lowered to drill bit (or junk mill) drills through to requiring the degree of depth to fulfil assignment.
More than the embodiment of the utility model is specified, but said content is merely the preferred embodiment of the utility model, can not be considered to be used to limit the practical range of the utility model.All equalizations of doing according to the utility model application range change and improve etc., all should still belong within the patent covering scope of the utility model.
Claims (4)
1. primary filling squeeze method separator; Comprise hydraulic setting device, safety joint (1), central tube, upper sealing device (3), locking device (4), slips anchoring (5), lower sealing device (6), device for filling (7) and backwash device, it is characterized in that: said safety joint (1) lower end internal thread connects oil pipe, and external screw thread connects central tube; Said oil pipe is positioned at central tube inside; The lower end circumferencial direction of central tube has pack hole, and said device for filling (7) is positioned at the bottom of central tube, comprises filling tube and closing organ; Said backwash device is positioned at the end near safety joint; Comprise backwash joint and backwash ring (2), relative with the pack hole position backwash hole that has on the backwash joint, the outer end of separator is provided with all upper sealing devices under the said backwash ring (2); The outer end of device for filling (7) is provided with three circle lower sealing devices (6), is provided with locking device (4) and slips anchoring (5) between said upper sealing device (3) and the lower sealing device (6) from top to bottom successively.
2. separator according to claim 1 is characterized in that: said safety joint (1) is provided with positive left-hand thread screw thread.
3. separator according to claim 1 and 2 is characterized in that: said backwash hole is connected with backwash ring (2) valve.
4. separator according to claim 1 is characterized in that: said slips anchoring (5) comprises slips, slips cone and slips urceolus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202626613U CN202194618U (en) | 2011-07-23 | 2011-07-23 | Once filling cement squeezing separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202626613U CN202194618U (en) | 2011-07-23 | 2011-07-23 | Once filling cement squeezing separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202194618U true CN202194618U (en) | 2012-04-18 |
Family
ID=45949535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202626613U Expired - Fee Related CN202194618U (en) | 2011-07-23 | 2011-07-23 | Once filling cement squeezing separator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202194618U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111119786A (en) * | 2018-11-01 | 2020-05-08 | 中国石油化工股份有限公司 | Packer, setting tool and drilling and completion integrated method |
-
2011
- 2011-07-23 CN CN2011202626613U patent/CN202194618U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111119786A (en) * | 2018-11-01 | 2020-05-08 | 中国石油化工股份有限公司 | Packer, setting tool and drilling and completion integrated method |
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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: 20120418 Termination date: 20130723 |