CN201057038Y - Novel separate-layer fracturing process pipe column for sand-blocking-prevention gas well - Google Patents
Novel separate-layer fracturing process pipe column for sand-blocking-prevention gas well Download PDFInfo
- Publication number
- CN201057038Y CN201057038Y CNU2007201696383U CN200720169638U CN201057038Y CN 201057038 Y CN201057038 Y CN 201057038Y CN U2007201696383 U CNU2007201696383 U CN U2007201696383U CN 200720169638 U CN200720169638 U CN 200720169638U CN 201057038 Y CN201057038 Y CN 201057038Y
- Authority
- CN
- China
- Prior art keywords
- oil pipe
- packer
- hydraulic anchor
- sand
- tubing
- 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 - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 11
- 239000004576 sand Substances 0.000 claims abstract description 16
- 210000002445 nipple Anatomy 0.000 claims abstract description 8
- 230000002265 prevention Effects 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 17
- 230000015572 biosynthetic process Effects 0.000 description 14
- 239000002343 natural gas well Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 241000242541 Trematoda Species 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The utility model provides a novel sand control card gas well layered fracturing technology tubular column, including hydraulic anchor (1), packer (2), oil pipe nipple joint (3), sandblast sliding sleeve (4), hydraulic anchor (5), packer (6), oil pipe (7), sit and seal ball seat (8), oil pipe shoes (10), hydraulic anchor (1), packer (2) cup joint on oil pipe (7), hydraulic anchor (5) cup joint on oil pipe (7), sandblast sliding sleeve (4) is connected in oil pipe nipple joint (3), packer (6), sit and seal ball seat (8) at the sub-unit connection of packer (6), the bottom of oil pipe (7) is connected with oil pipe shoes (10), both guaranteed the reliable implementation of layered fracturing technology, solved again because of the easy sand card of fracturing upper strata hydraulic anchor and arouse the difficult problem of tubular column after the pressure, effectively solved because of the difficult play tubular column problem of hydraulic anchor sand card.
Description
Technical field
The utility model is after carrying out separate stratum fracfturing at a plurality of gas-bearing formation sections of the natural gas well, because of hydraulic anchor sand card is difficult for tripping out a kind of new type of sand prevention treibgas well separate stratum fracfturing process pipe string that tubing string designs.
Background technology
In recent years, the separate stratum fracfturing process pipe string based on different packers such as retrievable, permanent types is developed in succession at the separate stratum fracfturing transformation of multilayer gas well in domestic oil field.Though based on the separate stratum fracfturing tubing string of retrievable packer problem at the beginning of design with regard to lift pipe string after considering separate stratum fracfturing, but push up on the tubing string when preventing pressure break lower floor, cause tubing bending, fracture or the inefficacy of packer wriggling, often on packer, increase a hydraulic anchor, can guarantee the reliability of high pressure separate stratum fracfturing construction like this.But owing to increased hydraulic anchor, when carrying out the upper strata pressure break, inevitably on packer, increased the sand setting amount, after causing finishing whole pressing crack constructions, when needing lift pipe string, because of hydraulic anchor sand card, make that the difficulty of lift pipe string increases after the pressure break, to the well workover in gas well later stage, repeat retrofit work and exert a certain influence.For adopting permanent packer is main separate stratum fracfturing tubing string, and the later stage, its construction was more complicated, technical requirements is higher, difficulty is bigger, expense also can be higher if will move tubing string.
Summary of the invention
The purpose of this utility model is to provide a kind of new type of sand prevention treibgas well separate stratum fracfturing process pipe string, in the technological requirement that satisfies natural gas well separate stratum fracfturing, has also guaranteed after the separate stratum fracfturing or trips out tubing string during the later stage well workover.
The purpose of this utility model is achieved in that
Tubing string structure composition from top to bottom is: comprise hydraulic anchor 1, packer 2, tubing nipple 3, sandblast sliding sleeve 4, hydraulic anchor 5, packer 6, oil pipe 7, setting ball seat 8, tubing shoe 10, this process pipe string is socketed on the oil pipe 7 at the top of top gas-bearing formation hydraulic anchor 1 and packer 2, hydraulic anchor 5 is socketed on the oil pipe 7, tubing nipple 3 connects sandblast sliding sleeve 4, packer 6, bottom at packer 6 connects setting ball seat 8, and the bottom of oil pipe 7 is connected with tubing shoe 10.
Described connection all is that tubing round thread links and connects.
Advantage of the present utility model is:
Compare with traditional packer separate stratum fracfturing mode, both guaranteed the reliable enforcement of separate stratum fracfturing technology, solved again, efficiently solve because of hydraulic anchor sand card and be difficult for tripping out the tubing string problem because of hydraulic anchor easy sand card in pressure break upper strata causes the problem of pressing back lift pipe string difficulty.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
The specific embodiment
As shown in drawings, this process pipe string is that oil pipe connects hydraulic anchor 1 and packer 2, hydraulic anchor 5 on the top of top gas-bearing formation.Between top gas-bearing formation and the bottom gas-bearing formation is that tubing nipple 3 is connected sandblast sliding sleeve 4, packer 6, and connecting setting ball seat 8,7 in the bottom of packer 6 is oil pipe, the 10th, and tubing shoe.
In natural gas well sleeve pipe, be lowered to natural gas well separate stratum fracfturing sand control clipping technique tubing string:
1, at first, following perforating gun is once penetrated out two gas-bearing formation sections in the natural gas well;
2, the utility model natural gas well separate stratum fracfturing sand control clipping technique tubing string is lowered in the gas well;
3, by the pressurization of oil pipe infusion fracturing fluid, packer, hydraulic anchor etc. enters duty, packer sealing packing element packing target zone and oil sets annular space;
4, carry out the pressure break of bottom gas-bearing formation, at this moment, hydraulic anchor 1,5 is tubing string fixedly, prevents that tubing string is subjected to top power, causes tubing bending, fractures or the inefficacy of packer wriggling.
5, drop into steel ball from oil pipe after the bottom gas-bearing formation pressure break, treat that steel ball falls into sandblast sliding sleeve 4 backs and opens sandblast sliding sleeve 4 from oil pipe 7 pressurizations, oil pipe 7 and top gas-bearing formation are linked up, simultaneously, steel ball and sandblast sliding sleeve 4 fall to sleeve base 8 places shutoff bottom gas-bearing formation together;
6, by oil pipe infusion fracturing fluid, fracturing fluid enters the top gas-bearing formation by sandblast sliding sleeve 4 seating nipple openings, carries out the pressing crack construction of top gas-bearing formation.At this moment, hydraulic anchor 1 prevents that tubing string is subjected to top power, and the slips of packer 6 prevents that then tubing string is subjected to downward power.
7, after gas-bearing formation pressing crack construction in top is finished, as not tripping out tubing string, directly completion, discharge opeing, operation.When having needed fracturing string, the anti-kill-job that circulates, at this moment, hydraulic anchor 1,5 anchor flukes are recoverable, because of the sand setting amount between last gas-bearing formation and the packer 6 seldom, tubing string is easier to be tripped out.
Claims (2)
1. new type of sand prevention treibgas well separate stratum fracfturing process pipe string, comprise hydraulic anchor (1), packer (2), tubing nipple (3), sandblast sliding sleeve (4), hydraulic anchor (5), packer (6), oil pipe (7), setting ball seat (8), tubing shoe (10), it is characterized in that: hydraulic anchor (1), packer (2) are socketed on the oil pipe (7), hydraulic anchor (5) is socketed on the oil pipe (7), tubing nipple (3) connects sandblast sliding sleeve (4), packer (6), bottom at packer (6) connects setting ball seat (8), and the bottom of oil pipe (7) is connected with tubing shoe (10).
2. new type of sand prevention treibgas well separate stratum fracfturing process pipe string according to claim 1 is characterized in that: above-mentioned each parts connect and are tubing round thread and link and connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201696383U CN201057038Y (en) | 2007-07-10 | 2007-07-10 | Novel separate-layer fracturing process pipe column for sand-blocking-prevention gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201696383U CN201057038Y (en) | 2007-07-10 | 2007-07-10 | Novel separate-layer fracturing process pipe column for sand-blocking-prevention gas well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201057038Y true CN201057038Y (en) | 2008-05-07 |
Family
ID=39425879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201696383U Expired - Lifetime CN201057038Y (en) | 2007-07-10 | 2007-07-10 | Novel separate-layer fracturing process pipe column for sand-blocking-prevention gas well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201057038Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102268972A (en) * | 2011-08-04 | 2011-12-07 | 荆州市翔龙石油科技有限公司 | Method for preventing setting failure of packer resulted from creeping of pipe string |
| CN102839920A (en) * | 2012-08-07 | 2012-12-26 | 中国石油化工股份有限公司 | Multi-segment transforming tubular column for horizontal well and use method for same |
| CN103321626A (en) * | 2013-07-11 | 2013-09-25 | 中国海洋石油总公司 | Fracture and sand prevention integrated completion pipe string and application method thereof |
-
2007
- 2007-07-10 CN CNU2007201696383U patent/CN201057038Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102268972A (en) * | 2011-08-04 | 2011-12-07 | 荆州市翔龙石油科技有限公司 | Method for preventing setting failure of packer resulted from creeping of pipe string |
| CN102839920A (en) * | 2012-08-07 | 2012-12-26 | 中国石油化工股份有限公司 | Multi-segment transforming tubular column for horizontal well and use method for same |
| CN102839920B (en) * | 2012-08-07 | 2015-04-22 | 中国石油化工股份有限公司 | Multi-segment transforming tubular column for horizontal well and use method for same |
| CN103321626A (en) * | 2013-07-11 | 2013-09-25 | 中国海洋石油总公司 | Fracture and sand prevention integrated completion pipe string and application method thereof |
| CN103321626B (en) * | 2013-07-11 | 2016-01-13 | 中国海洋石油总公司 | A kind of fracturing sand control integration completion tubular column and application process thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080507 |
|
| CX01 | Expiry of patent term |