CN203961941U - Packer fracturing string - Google Patents
Packer fracturing string Download PDFInfo
- Publication number
- CN203961941U CN203961941U CN201420359964.0U CN201420359964U CN203961941U CN 203961941 U CN203961941 U CN 203961941U CN 201420359964 U CN201420359964 U CN 201420359964U CN 203961941 U CN203961941 U CN 203961941U
- Authority
- CN
- China
- Prior art keywords
- packer
- ball
- ball seat
- oil pipe
- fracturing string
- 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 discloses a kind of packer fracturing string, it comprises multiple ball seats, packer and multiple oil pipe, between every two adjoining ball seats, be tightly connected by an oil pipe respectively, and in two adjoining ball seats, the ball seat internal diameter that is positioned at below is less than the ball seat internal diameter that is positioned at top, described multiple ball seat is all positioned at the top of described packer, and described packer top seal is connected with a ball seat, and sealed bottom is connected with an oil pipe.The ball seat of multiple different inner diameters is installed on packer top, and the ball of supporting various outer diameter or bat be used for stopping up ball seat, can be in the time that fracturing string loses efficacy fast finding leak source.
Description
Technical field
The utility model relates to a kind of novel technique column in oil gas water well fracturing technique field, especially a kind of packer fracturing string.
Background technology
Pressure break can improve oil gas well yield; in fracturing process, often use packer protective casing; before adding sand, pressure break all to verify the sealing of tubing string and packer; generally adopt the front positive pressure testing of pressure break or during infusion prepad fluid, observe casing pressure or fluid situation and judge.Rise or fluid if there is casing pressure, cannot judge it is because packer lost efficacy, or due to the reason of Leak in Oil Pipe, need to trip out tubing string inspection, if Leak in Oil Pipe, cannot utilize former well fracturing string directly to look for leakage, need to be on ground single oil pipe pressure test, there is the deficiency that the cycle is long, labour intensity is large.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of packer fracturing string that can look for fast leakage.
In order to solve the problems of the technologies described above, the utility model comprises multiple ball seats, packer and multiple oil pipe, between every two adjoining ball seats, be tightly connected by an oil pipe respectively, and in two adjoining ball seats, the ball seat internal diameter that is positioned at below is less than the ball seat internal diameter that is positioned at top, described multiple ball seat is all positioned at the top of described packer, and described packer top seal is connected with a ball seat, and sealed bottom is connected with an oil pipe.
The spacing range of described multiple ball seat spaced set and adjoining two ball seats is 800m-1000m.
The beneficial effects of the utility model are: the ball seat of multiple different inner diameters is installed on packer top, and the ball of supporting various outer diameter or bat be used for stopping up ball seat, can be in the time that fracturing string loses efficacy fast finding leak source.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model packer fracturing string.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Referring to Fig. 1, packer fracturing string of the present utility model comprises multiple ball seats 1, packer 2 and multiple oil pipe 3, between every two adjoining ball seats 1, be tightly connected by an oil pipe 3 respectively, and in two adjoining ball seats 1, the ball seat internal diameter that is positioned at below is less than the ball seat internal diameter that is positioned at top, described multiple ball seat 1 is all positioned at the top of described packer 2, and described packer 2 top seals are connected with a ball seat, and sealed bottom is connected with an oil pipe.
The spacing range of described multiple ball seat 1 spaced set and adjoining two ball seats 1 is 800m-1000m.
Work progress:
Precalculated position under the fracturing string lower going-into-well that the ball seat of different inner diameters 1, packer 2 and oil pipe 3 are formed, the quantity of ball seat 1, according to tubing string Depth determination, packer 2 tops are installed one, upwards every 800 to 1000m install one afterwards.After packer 2 sets, start to test envelope or pressing crack construction, if find fracturing string seal failure, drop into from well head the ball or the bat that mate with ball seat 1, one of every input, just suppressing once from well head, test tube column sealing situation, until determine leak source scope.After leak source scope is determined, start oil pipe, the tubing string of every certain length, oil pipe is just being suppressed once, searches leak source particular location, so until find leak source.
The utility model is applicable to pressure break or the acidizing treatment of oil gas water well, especially with the obvious advantage in the fractured well that need to use packer protective casing.The utility model can reduce oil pipe and look for speed leakage, reduces labour intensity, shortens construction period, has broad application prospects.The utility model is installed the ball seat of multiple different inner diameters on packer top, neither affect normal pressing crack construction, again can be in the time that fracturing string loses efficacy fast finding leak source.
In sum, content of the present utility model is not limited in the above-described embodiment, and those skilled in the art can propose other embodiment within technological guidance's thought of the present utility model, but within these embodiment are included in scope of the present utility model.
Claims (2)
1. a packer fracturing string, it is characterized in that: comprise multiple ball seats (1), packer (2) and multiple oil pipe (3), between every adjoining two ball seats (1), be tightly connected by an oil pipe (3) respectively, and in adjoining two ball seats (1), the ball seat internal diameter that is positioned at below is less than the ball seat internal diameter that is positioned at top, described multiple ball seat (1) is all positioned at the top of described packer (2), described packer (2) top seal is connected with a ball seat, and sealed bottom is connected with an oil pipe.
2. according to packer fracturing string claimed in claim 1, it is characterized in that: the spacing range of described multiple ball seats (1) spaced set and adjoining two ball seats (1) is 800m-1000m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420359964.0U CN203961941U (en) | 2014-06-30 | 2014-06-30 | Packer fracturing string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420359964.0U CN203961941U (en) | 2014-06-30 | 2014-06-30 | Packer fracturing string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203961941U true CN203961941U (en) | 2014-11-26 |
Family
ID=51922540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420359964.0U Expired - Fee Related CN203961941U (en) | 2014-06-30 | 2014-06-30 | Packer fracturing string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203961941U (en) |
-
2014
- 2014-06-30 CN CN201420359964.0U patent/CN203961941U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210107 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: 300457 Tianjin Binhai New Area Development Zone Huanghai Road 106 Bohai Drilling Engineering Co., Ltd. science and Technology Development Office Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |
|
| 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: 20141126 |