CN201025018Y - Once pipe pole using hierarchical acidification pressure crack technology - Google Patents
Once pipe pole using hierarchical acidification pressure crack technology Download PDFInfo
- Publication number
- CN201025018Y CN201025018Y CNU2007200195170U CN200720019517U CN201025018Y CN 201025018 Y CN201025018 Y CN 201025018Y CN U2007200195170 U CNU2007200195170 U CN U2007200195170U CN 200720019517 U CN200720019517 U CN 200720019517U CN 201025018 Y CN201025018 Y CN 201025018Y
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- CN
- China
- Prior art keywords
- restriction choke
- packer
- sealing shroud
- hydraulic anchor
- washing well
- 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 relates to a layering acidification fracturing technology once pipe string, which comprises a rotating oil drainage device, a hydraulic anchor, a packer which can clean the well, a choke holder, a seal sleeve and a check valve. The lower end of the rotating oil drainage device is in turns connected with the hydraulic anchor, the packer which can clean the well, the choke holder, the packer which can clean the well, the seal sleeve, the choke holder, the packer which can clean the well, the seal sleeve, the hydraulic anchor, the choke holder and the check valve. The packer which can clean the well is arranged between the oil reservoir, and the choke holder and the seal sleeve are arranged on the oil reservoir. The utility model has the advantages that: the utility model simplifies operation procedure, and one pipe string can hold layering acidification fracturing construction operation for 2 to 3 layers. The utility model not only can eliminate acid but also can not affect the fracturing effect, and the pipe string is of good stability, simple construction and low cost. The utility model is widely use on the oil extraction technique.
Description
One, technical field
The utility model relates to oil exploitation down-hole process pipe string, tubing string of particularly a kind of separate layer acid treatment fracturing technology.
Two, background technology
When in the oil exploitation hyposmosis multi-section multi-layer oil reservoir being carried out joining of layering frac treatment, traditional process pipe string is a kind of for being lowered to traditional tubing string, the complete general operation of well, its shortcoming or deficiency are that purpose is very poor, handled layer position is not to be the design level position fully, thereby effect must also miss one's aim, often need for the second time, for the third time even repeatedly processing, repeat, repeatedly rise lower tubular column like this, repeatedly construction, the one, increased difficulty of construction, the 2nd, expend great amount of manpower and material resources, financial resources, prolong duty cycle, improved operating cost; Another kind of tubing string is to adopt the Y341 packer of washing well not and the rail mounted restriction choke carries out layering or choosing is pressed, though this mode purpose is stronger, also can play the effect of separate layer acid treatment pressure break or selective acidizing pressure break, but because its tubing string does not possess the well-flushing function, and the complicated operation of rail mounted restriction choke, success rate is low, can pollute and because dumbly when switching tracks causes the operation failure oil reservoir during application.
Three, summary of the invention
The purpose of this utility model provides tubing string of a kind of improved separate layer acid treatment fracturing technology, adopt sleeve type restriction choke and sealing shroud fit applications mode, the shortcoming or the deficiency that overcome effectively or avoid existing in the above-mentioned prior art, tubing string just can be effectively, convenient, economically oil reservoir is carried out layering or the selective acidizing fracturing work is handled.
Tubing string of separate layer acid treatment fracturing technology described in the utility model, comprise rotation bleeder, hydraulic anchor, washing well packer, restriction choke, sealing shroud and ball-and-seat, described rotation bleeder lower end is connected with hydraulic anchor, washing well packer, restriction choke, washing well packer, sealing shroud, restriction choke, washing well packer, sealing shroud, hydraulic anchor, restriction choke, ball-and-seat in turn, described washing well packer is between oil reservoir, and restriction choke and sealing shroud are positioned at the oil reservoir place.
Wherein, described restriction choke is the sleeve type restriction choke, comprises the joint that adapter sleeve and upper end thereof connect, the spring of installing between the valve seat that the lower end connects and joint and the valve seat, and described adapter sleeve inner chamber is installed on central tube, and the bottom is provided with the pressure break flowing hole.Described sealing shroud comprises box cupling and coupled body, and this cover intracoelomic cavity is installed on the combination packing, and the lower end is provided with positioning step.
The utility model has following advantage compared with prior art:
1, simplify operation procedure, be lowered to one-trip string, fixed tubular column can be implemented the acid fracturing construction operation to the layer 2-3 stratum.
2, placement hydraulic anchor in tubing string top and bottom can reduce the tubing string wriggling, and packer has the anti-flushing well function, plays the purpose of well-flushing acid discharge behind acid fracturing.
3, restriction choke is spring controlled sleeve type restriction choke, and matching with sealing shroud can sealed lower portion acid fracturing interval.
4, can carry out clean-out service before and after the acid fracturing, neither influence fracturing effect, can reach the acid discharge purpose again.
3, construction is simple and convenient, and cost is low, the input and output height.
Four, description of drawings
Fig. 1 is a kind of structural representation of the present utility model,
Fig. 2 is by restriction choke structural representation shown in Figure 1,
Fig. 3 is for pressing sealing shroud structural representation shown in Figure 1.
Five, the specific embodiment
Consult Fig. 1-Fig. 3, tubing string of a kind of separate layer acid treatment fracturing technology, comprise rotation bleeder 1, hydraulic anchor 2, washing well packer 3, restriction choke 4, sealing shroud 5 and ball-and-seat 6, rotation bleeder 1 lower end is connected with hydraulic anchor 2, washing well packer 3, restriction choke 4, washing well packer 3, sealing shroud 5, restriction choke 6, washing well packer 3, sealing shroud 5, hydraulic anchor 2, restriction choke 4, ball-and-seat 6 in turn, washing well packer 3 is between oil reservoir, and restriction choke 4 and sealing shroud 5 are positioned at the oil reservoir place.
Restriction choke 4 is the sleeve type restriction choke, comprises the joint 7 that adapter sleeve 8 and upper end thereof connect, the spring of installing between the valve seat 12 that the lower end connects and joint and the valve seat 9, and adapter sleeve 8 inner chambers are installed on central tube 10, and the bottom is provided with pressure break flowing hole 11.Sealing shroud comprises box cupling 16 and coupled body 15, and this cover intracoelomic cavity is installed on combination packing 13, and the lower end is provided with positioning step 14.
Claims (3)
1. tubing string of a separate layer acid treatment fracturing technology, comprise rotation bleeder, hydraulic anchor, washing well packer, restriction choke, sealing shroud and ball-and-seat, it is characterized in that described rotation bleeder lower end is connected with hydraulic anchor, washing well packer, restriction choke, washing well packer, sealing shroud, restriction choke, washing well packer, sealing shroud, hydraulic anchor, restriction choke, ball-and-seat in turn, described washing well packer is between oil reservoir, and restriction choke and sealing shroud are positioned at the oil reservoir place.
2. tubing string of separate layer acid treatment fracturing technology according to claim 1, it is characterized in that described restriction choke is the sleeve type restriction choke, comprise the joint that adapter sleeve and upper end thereof connect, the spring of installing between the valve seat that the lower end connects and joint and the valve seat, described adapter sleeve inner chamber is installed on central tube, and the bottom is provided with the pressure break flowing hole.
3. tubing string of separate layer acid treatment fracturing technology according to claim 1 is characterized in that described sealing shroud comprises box cupling and coupled body, and this cover intracoelomic cavity is installed on the combination packing, and the lower end is provided with positioning step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200195170U CN201025018Y (en) | 2007-03-14 | 2007-03-14 | Once pipe pole using hierarchical acidification pressure crack technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200195170U CN201025018Y (en) | 2007-03-14 | 2007-03-14 | Once pipe pole using hierarchical acidification pressure crack technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201025018Y true CN201025018Y (en) | 2008-02-20 |
Family
ID=39098876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200195170U Expired - Fee Related CN201025018Y (en) | 2007-03-14 | 2007-03-14 | Once pipe pole using hierarchical acidification pressure crack technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201025018Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101377125B (en) * | 2008-10-08 | 2012-09-05 | 中国石化股份胜利油田分公司现河采油厂 | Water well acidizing and sand prevention liquid replacing apparatus |
| CN106593391A (en) * | 2016-12-26 | 2017-04-26 | 中国石油天然气股份有限公司 | Pressure-dividing tubular column for chemical de-blocking compression packer and well fracturing method |
| CN108779666A (en) * | 2016-03-17 | 2018-11-09 | 国际壳牌研究有限公司 | Single enters fracturing process |
| CN112360394A (en) * | 2020-11-30 | 2021-02-12 | 中国石油集团渤海钻探工程有限公司 | Closable fracturing, discharging and extracting integrated pipe column and construction method thereof |
-
2007
- 2007-03-14 CN CNU2007200195170U patent/CN201025018Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101377125B (en) * | 2008-10-08 | 2012-09-05 | 中国石化股份胜利油田分公司现河采油厂 | Water well acidizing and sand prevention liquid replacing apparatus |
| CN108779666A (en) * | 2016-03-17 | 2018-11-09 | 国际壳牌研究有限公司 | Single enters fracturing process |
| CN106593391A (en) * | 2016-12-26 | 2017-04-26 | 中国石油天然气股份有限公司 | Pressure-dividing tubular column for chemical de-blocking compression packer and well fracturing method |
| CN106593391B (en) * | 2016-12-26 | 2019-03-15 | 中国石油天然气股份有限公司 | Chemistry solution sealed compression packer partial pressure tubular column and wellfracturing method |
| CN112360394A (en) * | 2020-11-30 | 2021-02-12 | 中国石油集团渤海钻探工程有限公司 | Closable fracturing, discharging and extracting integrated pipe column and construction method thereof |
| CN112360394B (en) * | 2020-11-30 | 2022-01-04 | 中国石油集团渤海钻探工程有限公司 | Closable fracturing, discharging and extracting integrated pipe column and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080220 |