CN2903354Y - Pressing crack saling working drum - Google Patents
Pressing crack saling working drum Download PDFInfo
- Publication number
- CN2903354Y CN2903354Y CN 200520022052 CN200520022052U CN2903354Y CN 2903354 Y CN2903354 Y CN 2903354Y CN 200520022052 CN200520022052 CN 200520022052 CN 200520022052 U CN200520022052 U CN 200520022052U CN 2903354 Y CN2903354 Y CN 2903354Y
- Authority
- CN
- China
- Prior art keywords
- cone
- pressure break
- lower cone
- fracturing
- metal
- 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
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model belongs to a down-hole packing device used for oil gas field producing well fracturing, in particular to a device capable of engaging with a packing section and replacing fracturing packing device to pack oil gas layers and realize producing well fracturing of separate layers, which comprises a upper cone body 1, a metal anchor 2 and a lower cone body 3 that are made from metal and connected by non-wire buckles. The down-hole packing device is mainly utilized in the oil gas field producing well fracturing with the advantages of high pressure bearing, no limitation to well temperatures, simple structure, and resistance of the fracturing tube column to sand clip, easy disengaging packing or the like.
Description
Technical field: the utility model belongs to the downhole packing instrument that a kind of oil gas field producing well pressure break is used.
Background technology: the pressure break of oil gas field producing well generally adopts pressure break packer packing oil removal gas-bearing formation to carry out pressure break, mainly with following three kinds of packers: 1). utilize desirable packer list to depress layer, the shortcoming of this packer is, once construction can only be finished an interval, if press multilayer just must carry out piecemeal with back-up sand.2). utilize the twin packer choosing to press arbitrary layer of tubing string, the shortcoming of this packer is that it can only finish an interval pressure break.3). utilize permanent packer to cooperate with other packer and press two-layer tubing string, the shortcoming of this packer to be, permanent packer latus rectum is less.Generally adopting elastomeric material with upper packer is pack-off element, so its pressure-bearing, and heat resistance is restricted, if packer deblocking not also will influence ordinary production and operation behind the well fracturing.
Summary of the invention: the purpose of this utility model is to provide a kind of the cooperation with seal section to substitute the pressure break packer is realized the separate stratum fracfturing of producing well with the packing oil-gas Layer pressure break seal operation tube.
The utility model is made up of upper cone, metal anchors, lower cone.Its material is metal, and without screw thread connects between them, and wherein upper cone, lower cone external surface are followed successively by guide cylinder face, expansion taper seat and locking taper seat, are arc transition between them.The guide cylinder face of upper cone, lower cone and part are expanded the upper and lower side that taper seat inserts metal anchors respectively.The big end of upper cone, lower cone has interior lead angle, and fillet is adopted in interior lead angle and plane transition, and the big end inner surface of lower cone has groove, and the external surface at metal anchors two ends has boss.
Compared with the prior art this utility model has following advantage:
1), component material of the present utility model is metal, use not limited by well temperature.
2), without screw thread connects between the component of the present utility model, metal material is adopted in sealing, can bear higher differential pressure.
3), the big end of upper/lower cone of the present utility model has interior lead angle, fillet is adopted in interior lead angle and plane transition, helps the insertion of seal section.
4), the utility model is simple in structure, cost is lower, fracturing string is difficult for the sand card, deblocking is easy.
Description of drawings: Fig. 1 is the utility model structure diagram.
The specific embodiment: referring to Fig. 1, the utility model is made up of upper cone 1, metal anchors 2, lower cone 3.Its material is metal, and without screw thread connects between them, and wherein upper cone 1, lower cone 3 external surfaces are followed successively by guide cylinder face 4, expansion taper seat 5 and locking taper seat 6, are arc transition between them.The guide cylinder face 4 of upper cone 1, lower cone 3 and part are expanded the upper and lower side that taper seat 5 inserts metal anchors 2 respectively.The big end of upper cone 1, lower cone 3 has interior lead angle 7, and interior lead angle 7 adopts fillet with the plane transition, and lower cone 3 big end inner surfaces have groove 8, and the external surface at metal anchors 2 two ends has boss 9.
Wherein the big end of lower cone 3 inner surfaces have groove 8, are used for and being connected of an envelope instrument.The external surface at metal anchors 2 two ends has boss 9, is beneficial to the sealing with internal surface of casing.The utility model is the inner surface of upper cone 1, lower cone 3 with the sealing surface that inserts seal section.
During on-the-spot the use, at first the utility model is pressed Fig. 1 suit successively, and its locking is connected the lower end of present envelope instrument, wholely then it is lowered to precalculated position in the producing well with oil pipe, examine the degree of depth errorless after, with pump truck tubing string is filled liquid, slowly suppress, upper cone 1, lower cone 3 awls are gone into metal anchors, the expansion of metal anchors two ends, and make it be affixed on internal surface of sleeve pipe.When pressure descends suddenly, the oil jacket pressure balance shows that finishing seat hangs and give up, and promptly can trip out the delivery tubing string.
When needing pressure break, be lowered to and have the fracturing string that inserts seal section, make and insert seal section and be inserted in the utility model pressure break seal operation tube, the potted component that inserts seal section and upper cone 1, lower cone 3 are corresponding, guarantee that promptly its sealing also can carry out pressure break.
Claims (4)
1, pressure break seal operation tube, it is characterized in that: it is made up of upper cone (1), metal anchors (2), lower cone (3), its material is metal, without screw thread connects between them, wherein upper cone (1), lower cone (3) external surface are followed successively by guide cylinder face (4), expansion taper seat (5) and locking taper seat (6), be arc transition between them, the guide cylinder face (4) of upper cone (1), lower cone (3) and part are expanded taper seat (5) and are inserted the upper and lower side of metal anchors (2) respectively.
2, pressure break seal operation tube according to claim 1, its feature are that also the big end of described upper cone (1), lower cone (3) has interior lead angle (7), and interior lead angle (7) adopts fillet with the plane transition.
3, pressure break seal operation tube according to claim 1, its feature are that also described lower cone (3) holds inner surface that groove (8) is arranged greatly.
4, pressure break seal operation tube according to claim 1, its feature are that also the external surface at described metal anchors (2) two ends has boss (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520022052 CN2903354Y (en) | 2005-12-01 | 2005-12-01 | Pressing crack saling working drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520022052 CN2903354Y (en) | 2005-12-01 | 2005-12-01 | Pressing crack saling working drum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2903354Y true CN2903354Y (en) | 2007-05-23 |
Family
ID=38078762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520022052 Expired - Fee Related CN2903354Y (en) | 2005-12-01 | 2005-12-01 | Pressing crack saling working drum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2903354Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828732A (en) * | 2011-06-15 | 2012-12-19 | 中国石油天然气股份有限公司 | Two-stage two-section backwash well inserting sealing sleeve protection separate injection pipe column and separate injection method thereof |
| CN103912235A (en) * | 2014-04-11 | 2014-07-09 | 中国海洋石油总公司 | Underground sealing structure suitable for thermal production well |
-
2005
- 2005-12-01 CN CN 200520022052 patent/CN2903354Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828732A (en) * | 2011-06-15 | 2012-12-19 | 中国石油天然气股份有限公司 | Two-stage two-section backwash well inserting sealing sleeve protection separate injection pipe column and separate injection method thereof |
| CN102828732B (en) * | 2011-06-15 | 2015-09-23 | 中国石油天然气股份有限公司 | Two-stage two-section backwash well inserting sealing sleeve protection separate injection pipe column and separate injection method thereof |
| CN103912235A (en) * | 2014-04-11 | 2014-07-09 | 中国海洋石油总公司 | Underground sealing structure suitable for thermal production well |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201908615U (en) | Layered steam injection packer | |
| CN105672947B (en) | A kind of novel sliding sleeve opens sliding sleeve tool and fracturing string | |
| CN202090886U (en) | External metal cage pipe packer | |
| CN203383772U (en) | Packer with safety valve | |
| CN206053900U (en) | A kind of hydraulic control self solves sealed packer | |
| CN2903354Y (en) | Pressing crack saling working drum | |
| CN205349316U (en) | Two single deck tape -recorder staged fracturing technology tubular columns that seal of compression | |
| CN201416429Y (en) | Sand blasting choke with sliding sleeve | |
| CN103104213A (en) | High-temperature high-pressure testing packer | |
| CN2660108Y (en) | Double balance cylinder compression packer | |
| CN201588596U (en) | Compressive packer rubber roller used for oil and gas fields with improved structure | |
| CN202073528U (en) | Expanding type anti-clamp packer | |
| CN2823541Y (en) | Memory type warm-pressing double-control heat extracting packer | |
| CN2479188Y (en) | Packer | |
| CN202745799U (en) | Large-diameter self-locking packer | |
| CN2758459Y (en) | Packer capable of washing well | |
| CN2611601Y (en) | Layered quantitative steam injection pipe column | |
| CN207686691U (en) | Pipe column for layered gas drive | |
| CN2630483Y (en) | Multi-stage long-acting sealer | |
| CN201041013Y (en) | Well mouth coupling device | |
| CN2530026Y (en) | Packer for blocking water | |
| CN201024973Y (en) | Expansion pressure crack tool | |
| CN2841949Y (en) | Reverse differential pressure anchor packer | |
| CN2816342Y (en) | Cement-filling type packer | |
| CN2777184Y (en) | External packer filling tool for completion pipe of horizontal well |
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 |
Granted publication date: 20070523 Termination date: 20141201 |
|
| EXPY | Termination of patent right or utility model |