CN2690585Y - Two purpose injection type drillable bridge plug - Google Patents
Two purpose injection type drillable bridge plug Download PDFInfo
- Publication number
- CN2690585Y CN2690585Y CNU2003201316812U CN200320131681U CN2690585Y CN 2690585 Y CN2690585 Y CN 2690585Y CN U2003201316812 U CNU2003201316812 U CN U2003201316812U CN 200320131681 U CN200320131681 U CN 200320131681U CN 2690585 Y CN2690585 Y CN 2690585Y
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- bridge plug
- plug
- utility
- conduct
- 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
- 238000002347 injection Methods 0.000 title claims abstract description 8
- 239000007924 injection Substances 0.000 title claims abstract description 8
- 239000004576 sand Substances 0.000 claims abstract description 9
- 238000005406 washing Methods 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 239000002981 blocking agent Substances 0.000 claims description 6
- 238000011010 flushing procedure Methods 0.000 claims description 6
- 239000004568 cement Substances 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000012856 packing Methods 0.000 abstract description 4
- 239000003129 oil well Substances 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000010992 reflux Methods 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 abstract 4
- 230000000903 blocking effect Effects 0.000 abstract 1
- 239000002002 slurry Substances 0.000 description 8
- 239000012530 fluid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/134—Bridging plugs
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The utility model discloses a two purpose injection type drillable bridge plug designed for the blocking water of the oil layer of the oil well; the two purpose injection type drillable bridge plug can continuously conduct the operation of the rinsing sand and the washing well and the injecting cement pulp in the same oil column. The utility model is characterized in that a central hole of the bridge plug is designed with a sliding sleeve; in rinsing sand and washing well, the inner hole of the sliding sleeve is communicated and the washing work can directly be conducted; in injecting the block agent, a thrown steel ball can block the inner hole of the sliding sleeve to make the bridge plug after completing the seat packing hold back the sliding sleeve; a liquid outlet hole is exposed to conduct the injection of the cement pulp. The utility model making use of the working characteristic of the sliding sleeve can successfully solve the problem that the bridge plug not only can conduct the rinsing sand and the washing well, but also can inject the cement block agent. For preventing the block agent refluxing, a clamp spring can conduct the limitation for a rubber plug. The bridge plug is simple in structure and easy in operation. The utility model is new tool, and in particular is adequate for amount of outputting sand condition in the loosening water layer so as to inject the cement block agent into the water layer for conducting the block.
Description
One, technical field
The utility model is a kind of oil field downhole tool, promptly dual-purpose injection type drillable bridging plug.This bridging plug is once gone into the well and can be finished sand-flushing and the operation of squeeze slurry blocking agent.It is a kind of new tool of oil well oil reservoir water blockoff.
Two, technical background
At present, with cement paste shutoff oil-water well, normal conditions all will be carried out sand washing or well-flushing on the preceding working procedure of shutoff, guarantee the pit shaft cleaning.Face generally has two kinds of situations when selecting capping tools, and the one, adopt the retrievable packer, this packer has central passage promptly can carry out clean-out service also can to carry out squeeze slurry the shutoff operation is once finished.But it exist maximum shortcoming be to the situation of cement paste Hou Ning and on propose the bad grasp of time of packer.Done sth. in advance cement paste on the packer and told outward, influenced the effect of shutoff, on carried late might causing packer can not get outside the well, influence the use of this well; The 2nd, adopting permanent packer is the drillable bridging plug, and the drillable bridging plug is to allow machining, can needn't worry in the down-hole use for a long time that bridging plug gets the problem of not coming out, and shutoff is firm.But its shortcoming is a squeeze slurry will transfer the bridge plugging cement paste separately afterwards, need transfer tubing string again one time, more than once like this operation, and the cost of construction has also improved, and the time of consumption also will be grown, and influences construction speed.
Three, content of the present utility model
(1) purpose
The purpose of this utility model is can carry out the subpunch sand washing well drillable bridging plug of squeeze slurry operation again for oil well oil reservoir water blockoff provides a kind of on same tubing string.
(2) technical scheme
The purpose of this utility model is achieved in that the bridging plug main body of being made up of back-off sub, slips, central tube, sliding sleeve etc.Its special character is to be equipped with in the central tube sliding sleeve, and when sand washing or well-flushing, liquid can directly fulfil assignment by the sliding sleeve endoporus; When squeeze slurry, utilize to drop into steel ball and build the pressure to the sliding sleeve bridging plug is set, continue again after setting to boost and cut off spacing shear pin, make sliding sleeve slides downwards abdicate on the central tube fluid hole and realize the squeeze slurry purpose.
The bridging plug duplicate of being made up of plug, plug fuse, jump ring is called for short the plug part.Its special character is that the plug fuse cooperates with the internal diameter of central tube by O shape rubber sealing, and uses jump ring that plug partly is stuck on the bridging plug central tube, stops blocking agent to reflux, and realizes the purpose of shutoff.
(3) beneficial effect
1, has two kinds of functions.Promptly can the squeeze note blocking agent can in same tubing string, directly carry out sand washing or well-flushing again, remove from and transferred tubing string separately one time, save operation, reduce operating cost, shorten the engineering time, boost productivity.
2, designed spacing jump ring on the plug fuse, it is tight reliable that plug is stopped up.
3, simple with packer or other bridging plug structure compared.
Four, description of drawings
Accompanying drawing is a section of structure of the present utility model:
Among the figure: 1-back-off sub, 2-lock ring, 3-lock tube, the necking down of 4-joint, 5-slips, 6-pressure cap, 7-O shape cushion rubber, 8-packing element, 9-central tube, the 10-sliding sleeve, 11-shear pin, 12-fluid hole, 13-O shape cushion rubber, 14-rubber stopper, 15-plug fuse, the 16-jump ring, wherein part 1～13 is the bridging plug main part, part 14～16 is the plug part for duplicate.
Five, the specific embodiment
At first, bridging plug main body and setting tool are connected on the tubing string, transfer to the pre-location of well of cased well, and carry out operations such as sand-flushing by technique process by technological requirement.Pitching was to above the taper hole of sliding sleeve 10 when bridging plug set, adding hydraulic pressure in the oil pipe, to make setting tool promote lock ring 2 lock tubes 3 descending, awl is opened slips 5, oppress pressure cap 6 simultaneously and make packing element 8 distendings, at this moment packing element 8 seals annular casing space gradually, after buttless thread on the lock ring 2 and the central tube screw-threaded engagement, can only advance and can not move back, slips 5 crowns of being bored out are stuck on the casing wall.Realize that promptly bridging plug sets.Continue to increase the oil pipe internal pressure during squeeze slurry, steel ball promotion sliding sleeve moves down cuts off shear pin 11, at this moment fluid hole 12 is opened, can realize the squeeze note blocking agent, put into the plug part from well head then, the plug fuse is headed in the endoporus of central tube 9, be stuck in the work nest until jump ring 16, the plug part has promptly been finished the prevention blocking agent and has been refluxed, squeeze slurry finishes, implement to give up operation then, i.e. back-off sub 1 threaded portion withdraws from setting tool or disconnects from joint necking down position, and bridging plug is lost in the down-hole.
Claims (2)
1, a kind of dual-purpose injection type drillable bridging plug by bridging plug and the combination of plug two parts is characterized in that sliding sleeve 10 has been installed on the bridging plug central tube, and the sliding sleeve endoporus leads to when sand washing or well-flushing, and the steel ball that sliding sleeve is dropped into during the squeeze note blocking agent seals endoporus.
2, dual-purpose injection type drillable bridging plug according to claim 1 is characterized in that the bridging plug centre bore cooperates with the plug fuse, and plug fuse 15 has jump ring 16, is stuck on the endoporus stopper slot of central tube 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201316812U CN2690585Y (en) | 2003-12-26 | 2003-12-26 | Two purpose injection type drillable bridge plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201316812U CN2690585Y (en) | 2003-12-26 | 2003-12-26 | Two purpose injection type drillable bridge plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2690585Y true CN2690585Y (en) | 2005-04-06 |
Family
ID=34662345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2003201316812U Expired - Fee Related CN2690585Y (en) | 2003-12-26 | 2003-12-26 | Two purpose injection type drillable bridge plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2690585Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008033385A1 (en) * | 2006-09-13 | 2008-03-20 | Bj Services Company | Drillable bridge plug |
| US7475736B2 (en) | 2005-11-10 | 2009-01-13 | Bj Services Company | Self centralizing non-rotational slip and cone system for downhole tools |
| CN103470197A (en) * | 2013-08-05 | 2013-12-25 | 中国石油天然气股份有限公司 | Ceramic slip composite bridge plug |
| CN104453859A (en) * | 2013-09-24 | 2015-03-25 | 中国石油化工股份有限公司 | Well completing tester and system thereof |
| CN106703745A (en) * | 2015-11-18 | 2017-05-24 | 中国石油化工股份有限公司 | Pumping bridge plug |
| CN111594098A (en) * | 2020-06-24 | 2020-08-28 | 扬州睿德石油机械有限公司 | Automatic closing grouting device and working process thereof |
| CN112177561A (en) * | 2019-07-03 | 2021-01-05 | 中国石油化工股份有限公司 | Bridge plug feeder, cementing plug pipe column and cementing plug process |
-
2003
- 2003-12-26 CN CNU2003201316812U patent/CN2690585Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7600572B2 (en) | 2000-06-30 | 2009-10-13 | Bj Services Company | Drillable bridge plug |
| US7475736B2 (en) | 2005-11-10 | 2009-01-13 | Bj Services Company | Self centralizing non-rotational slip and cone system for downhole tools |
| WO2008033385A1 (en) * | 2006-09-13 | 2008-03-20 | Bj Services Company | Drillable bridge plug |
| CN103470197A (en) * | 2013-08-05 | 2013-12-25 | 中国石油天然气股份有限公司 | Ceramic slip composite bridge plug |
| CN104453859A (en) * | 2013-09-24 | 2015-03-25 | 中国石油化工股份有限公司 | Well completing tester and system thereof |
| CN104453859B (en) * | 2013-09-24 | 2017-12-05 | 中国石油化工股份有限公司 | Well completing test device and its system |
| CN106703745A (en) * | 2015-11-18 | 2017-05-24 | 中国石油化工股份有限公司 | Pumping bridge plug |
| CN106703745B (en) * | 2015-11-18 | 2019-10-29 | 中国石油化工股份有限公司 | A kind of pumped type bridge plug |
| CN112177561A (en) * | 2019-07-03 | 2021-01-05 | 中国石油化工股份有限公司 | Bridge plug feeder, cementing plug pipe column and cementing plug process |
| CN112177561B (en) * | 2019-07-03 | 2022-07-15 | 中国石油化工股份有限公司 | Bridge plug feeder, cementing plug pipe column and cementing plug process |
| CN111594098A (en) * | 2020-06-24 | 2020-08-28 | 扬州睿德石油机械有限公司 | Automatic closing grouting device and working process thereof |
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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 |