CN204571854U - Middle matter oil leakage loses well test string - Google Patents
Middle matter oil leakage loses well test string Download PDFInfo
- Publication number
- CN204571854U CN204571854U CN201520038180.2U CN201520038180U CN204571854U CN 204571854 U CN204571854 U CN 204571854U CN 201520038180 U CN201520038180 U CN 201520038180U CN 204571854 U CN204571854 U CN 204571854U
- Authority
- CN
- China
- Prior art keywords
- blind plugging
- blind
- oil leakage
- test string
- well test
- 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
- 238000003032 molecular docking Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Examining Or Testing Airtightness (AREA)
- Pipe Accessories (AREA)
Abstract
The matter oil leakage that to relate in one of the present utility model loses well test string, is made up of circulation slide sleeve, sleeve pipe mechanical packer and blind plugging.Oil pipe one end is through sleeve pipe mechanical packer, and the oil pipe end be positioned on the downside of sleeve pipe mechanical packer is equiped with blind plugging, is positioned on the oil pipe on the upside of sleeve pipe mechanical packer and is equiped with circulation slide sleeve.Owing to carrying out technique scheme, the utility model can avoid well kick, overflow and gas blowout accident during well completing test tubing string under group and replacing well head, guarantee that casing pressure keeps normal condition simultaneously, ensure well control safety, thus ensure the personal safety of site operation personnel.
Description
Technical field
The utility model relates to the test string that in a kind of carbonate rock, matter oil leakage mistake oil well uses in Completion Operations.
Background technology
In Completion Operations, because well bores in going down process the Reservoir Body scale of the meeting reason such as not, occur along with phenomenons such as: stratum emptying-lose returns-well kick-overflows immediately, cause pulling out of hole and organize lower well completing test tubing string and cannot know dynamic Liquid Surface situation in pit shaft, before kill mud proportion progressively strengthens and makes to change well head, pit shaft is short for stabilization time, safe window is young, Reservoir Body energy first time release when adding completion, replacing well head predicted time and control time are difficult to hold, during causing organizing lower well completing test tubing string and replacing well head, well control risk is very high.The early stage 143 mouthfuls of leakage emptying well well completing test tubing strings of statistics system in Tahe Oilfield, bare string totally 124 mouthfuls, account for 86.71%, during bare string completion replacing well head, well head oil, cover are all in opening-wide state, very easily there is well kick, overflow and gas blowout accident, production period possibility sleeve pipe superpressure in addition, well control dangerous.
Summary of the invention
The purpose of this utility model proposes one to lose in well casing post for matter oil leakage in carbonate rock in advance barefoot completion, under group, avoid well kick, overflow and gas blowout accident during well completing test tubing string and replacing well head, ensure that the middle matter oil leakage of well control safety loses well test string.
It is by the sleeve pipe of jacket oil pipe that the purpose of this utility model is achieved in that middle matter oil leakage loses well test string, is installed in the circulation slide sleeve on oil pipe, sleeve pipe mechanical packer and blind plugging composition.Oil pipe one end is through sleeve pipe mechanical packer, and the oil pipe end be positioned on the downside of sleeve pipe mechanical packer is equiped with blind plugging, is positioned on the oil pipe on the upside of sleeve pipe mechanical packer and is equiped with circulation slide sleeve.
Owing to carrying out technique scheme, the utility model can avoid well kick, overflow and gas blowout accident during well completing test tubing string under group and replacing well head, guarantee that casing pressure keeps normal condition simultaneously, ensure well control safety, thus ensure the personal safety of site operation personnel.
Accompanying drawing illustrates: the technical solution of the utility model is provided by following drawings and Examples:
Fig. 1 is that middle matter oil leakage loses well surveying test tube rod structure schematic diagram;
Fig. 2 is blind plugging structural representation.
Legend: 1, sleeve pipe, 2, oil pipe, 3, circulation slide sleeve, 4, sleeve pipe mechanical packer, 5, blind plugging, 6, blind plugging top connection, 7, blind plate, 8, anti-on push up rib, 9, cut off cover, 10, blind plugging lower contact.
Detailed description of the invention:
The utility model by the restriction of following embodiment, can not determine concrete embodiment according to the technical solution of the utility model and actual conditions.
Embodiment: as shown in Figure 1, middle matter oil leakage loses well test string and is made up of circulation slide sleeve 3, sleeve pipe mechanical packer 4 and blind plugging 5.Sleeve pipe mechanical packer 4 adopts prior art, and model can be selected to be Y211.Oil pipe 2 one end is through sleeve pipe mechanical packer 4, and oil pipe 2 end be positioned on the downside of sleeve pipe mechanical packer 4 is connected with blind plugging 5, is positioned on the oil pipe 2 on the upside of sleeve pipe mechanical packer 4 and is connected with circulation slide sleeve 3.Described oil pipe 2 is positioned at sleeve pipe 1.
As shown in Figure 2, the upper and lower joint 6,10 of the blind plugging that described blind plugging 5 comprises docking, blind plate 7 is built-in with at blind plugging upper and lower joint 6,10 joint, blind plate 7 one is positioned at blind plugging top connection 6, another portion is positioned at blind plugging lower contact 10, the blind plate 7 being positioned at blind plugging lower contact 10 by shear pin with cut off cover 9 and be connected, cut off cover 9 between blind plugging upper and lower joint 6,10 junction.In blind plugging top connection 6, middle part is provided with inwardly protruded anti-upper top rib 8, therefore the cavity that in the middle of being formed in blind plugging top connection 6, thin two ends are large, in two-port, offer internal thread.Blind plugging lower contact 10 inner end with cut off cover 9 and contact mutually, cut off cover 9 and peak at rib 8 place, anti-upper top.Blind plate 7 has an enlarged head and a little head, and little head cover has sealing ring, is positioned at blind plugging top connection 6; Enlarged head by shear pin with cut off cover 9 and be connected.
Blind plugging lower contact 10 one end outer wall offers external screw thread, spins, and be equiped with stopping screw at connecting portion with blind plugging top connection 6.
During use, the effect of shear pin and blind plate 7 stops strata pressure in oil pipe during completion tubular column and replacing well head under group, prevents well kick, overflow and gas blowout accident, ensures well control safety; Y211 sleeve pipe mechanical packer 4, when test string is down to design attitude, realizes packing element expansion by above putting the mode of putting, making it set at sleeve pipe 1 inwall, catch ring vacant lot stressor layer; Circulation slide sleeve 3 can realize, for slurry operation, by the mode that pitching is suppressed after entering well, closing circulation slide sleeve 3, realizing oil pipe, annular isolation after replacing well head completes.
Above technical characteristic constitutes most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease inessential technical characteristic according to actual needs, meet the needs of different situations.
Claims (7)
1. matter oil leakage loses well test string in one kind, it is characterized in that: it is made up of circulation slide sleeve, sleeve pipe mechanical packer and blind plugging, oil pipe one end is through sleeve pipe mechanical packer, the oil pipe end be positioned on the downside of sleeve pipe mechanical packer is connected with blind plugging, is positioned on the oil pipe on the upside of sleeve pipe mechanical packer and is connected with circulation slide sleeve.
2. middle matter oil leakage as claimed in claim 1 loses well test string, it is characterized in that: described blind plugging comprises the upper and lower joint of blind plugging of docking, be built-in with blind plate at the upper and lower joint joint of blind plugging, blind plate one is positioned at blind plugging top connection, and another portion is positioned at blind plugging lower contact.
3. in as claimed in claim 2, matter oil leakage loses well test string, it is characterized in that: in blind plugging top connection middle part be provided with inwardly protruded anti-on push up rib, the cavity that in the middle of being formed in blind plugging top connection, thin two ends are large, offers internal thread in two-port.
4. as claimed in claim 2 or claim 3 in matter oil leakage lose well test string, it is characterized in that: blind plugging lower contact inner end with cut off cover and contact mutually, cut off cover and peak at and anti-ly above push up rib place.
5. middle matter oil leakage as claimed in claim 2 loses well test string, it is characterized in that: blind plugging lower contact one end outer wall offers external screw thread, spins, and be equiped with stopping screw at connecting portion with blind plugging top connection.
6. in as claimed in claim 2, matter oil leakage loses well test string, it is characterized in that: the blind plate being positioned at blind plugging lower contact is connected with cutting off to overlap by shear pin, cuts off and overlaps between the upper and lower joint of blind plugging.
7. middle matter oil leakage as claimed in claim 2 loses well test string, it is characterized in that: blind plate has an enlarged head and a little head, and little head cover has sealing ring, is positioned at blind plugging top connection; Enlarged head is connected with cutting off to overlap by shear pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520038180.2U CN204571854U (en) | 2015-01-20 | 2015-01-20 | Middle matter oil leakage loses well test string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520038180.2U CN204571854U (en) | 2015-01-20 | 2015-01-20 | Middle matter oil leakage loses well test string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204571854U true CN204571854U (en) | 2015-08-19 |
Family
ID=53864508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520038180.2U Expired - Fee Related CN204571854U (en) | 2015-01-20 | 2015-01-20 | Middle matter oil leakage loses well test string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204571854U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107605463A (en) * | 2017-11-10 | 2018-01-19 | 中国石油集团川庆钻探工程有限公司 | A kind of pit shaft hydrodynamic face monitoring method for drilling leakage blockage construction |
| CN110566191A (en) * | 2019-10-15 | 2019-12-13 | 山西蓝焰煤层气集团有限责任公司 | Method for detecting casing loss in coal-bed gas well |
-
2015
- 2015-01-20 CN CN201520038180.2U patent/CN204571854U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107605463A (en) * | 2017-11-10 | 2018-01-19 | 中国石油集团川庆钻探工程有限公司 | A kind of pit shaft hydrodynamic face monitoring method for drilling leakage blockage construction |
| CN107605463B (en) * | 2017-11-10 | 2020-07-24 | 中国石油集团川庆钻探工程有限公司 | Shaft dynamic liquid level monitoring method for drilling plugging construction |
| CN110566191A (en) * | 2019-10-15 | 2019-12-13 | 山西蓝焰煤层气集团有限责任公司 | Method for detecting casing loss in coal-bed gas well |
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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: 20150819 |