CN201705223U - Small casing pipe well oil pipe - Google Patents
Small casing pipe well oil pipe Download PDFInfo
- Publication number
- CN201705223U CN201705223U CN2010202348399U CN201020234839U CN201705223U CN 201705223 U CN201705223 U CN 201705223U CN 2010202348399 U CN2010202348399 U CN 2010202348399U CN 201020234839 U CN201020234839 U CN 201020234839U CN 201705223 U CN201705223 U CN 201705223U
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- China
- Prior art keywords
- oil pipe
- pipe
- small casing
- well
- oil
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- 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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- 239000004576 sand Substances 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract description 2
- 239000003129 oil well Substances 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 abstract 5
- 238000010168 coupling process Methods 0.000 abstract 5
- 238000005859 coupling reaction Methods 0.000 abstract 5
- 238000009933 burial Methods 0.000 abstract 1
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model discloses a small casing pipe well oil pipe, which is used in a small casing pipe exploitation well of petroleum industry. The small casing pipe well oil pipe includes a body and a joint coupling, external threads are arranged on pipe bodies at two ends of the body, internal threads are arranged on an inner circle of the joint coupling, the outer diameter phi of the body ranges from 62mm to 69.9mm, the inner diameter phi of the body ranges from 51.8mm to 59mm, and the outer diameter phi of the joint coupling ranges from 74mm to 79mm. An annular space between the oil pipe and the inner circumference of a casing pipe is increased by optimizing the sizes of the oil pipe body and the joint coupling, and the sizes of the inner diameters and outer diameters of an oil pipe body and the joint coupling are optimized under the premise of not reducing connecting strength of the down-hole oil pipe. On one hand, the small casing pipe well oil pipe prevents pipe blockage accidents, sand burial accidents and the like caused by smaller annular space between the down-hole oil pipe and the inner wall of the small casing pipe, and prolongs well repair cycle; on the other hand, the small casing pipe well oil pipe optimizes the inner diameter size of the oil pipe, enables an internal space of the oil pipe to meet scheme requirements of different combinations of a sucker rod string and an oil well pump in various well conditions, and meets lifting requirements for oil extraction and water injection.
Description
Technical field
The utility model belongs to the oil pipe of going into the well of industrial gas oil oil, gas, well, and particularly a kind of small casing well oil pipe uses in the small casing recovery well.
Background technology
The small casing production technique is the new technology applied of petroleum industry in recent years, remains at present in the not mature enough perfect problem of process matched therewith, and mainly be because the small casing internal diameter reduces, cause oil sets annular space to dwindle.General API standard oil pipe or other industry standard oil pipe all are difficult to satisfy supporting exploitation requirement.In existing supporting oil pipe, 2 of standard
7/8" the external diameter 73mm of oil pipe, internal diameter 62mm, the external diameter 88.9mm of box cupling.Less because of the annular space between body box cupling and the small casing inwall, easily cause oil-pipe external wall to pile up corrosion thing or shaft bottom and shake out and be deposited in the pit shaft, thereby cause pipe clamp, sand buries accident.2 of standard
3/8" the external diameter 60.3mm of oil pipe, internal diameter 50.64mm, the external diameter 73mm of box cupling.Then there is the internal diameter problem of smaller in this oil pipe, can't satisfy different rod string of all kinds of hole conditions and oil extraction pump assembled scheme, and limitation is bigger, and easily causes side-abrasion of rod string.These supporting oil pipes use in the small casing well, all have inefficiency, frequent, the excessive shortcoming of maintenance cost of maintenance.
Summary of the invention
The purpose of this utility model provides a kind of small casing well oil pipe, solves the deficiencies in the prior art, satisfies the use needs of small casing well, prolongs the time between overhauls(TBO), reduces the workover treatment cost.
The purpose of this utility model is achieved in that a kind of small casing well oil pipe comprises body and box cupling, and the two ends body of body is provided with external screw thread, and the interior circle of box cupling is provided with internal thread, and the external diameter of its body is Φ 62mm-Φ 69.9mm; The internal diameter of its body is Φ 51.8mm-Φ 59mm; The external diameter of its box cupling is Φ 74mm-Φ 79mm.By optimizing the size of oil pipe body and box cupling, increase the annular space between oil pipe and the casing inner diameter.
The beneficial effects of the utility model are: under the prerequisite that does not reduce the oil pipe bonding strength of going into the well, optimized the inside and outside footpath size of oil pipe body and box cupling.On the one hand, increased the gap between oil pipe and the casing inner diameter, made things convenient for oil pipe to go into the well, prevented to have prolonged the well workover cycle, reduced the workover treatment cost because of the accidents such as oil pipe and the less pipe clamp that causes of small casing inwall annular space, sand bury of going into the well; On the other hand, the utility model has been optimized the pipe aperture size, make the oil pipe inner space can satisfy the assembled scheme requirement of different rod string of all kinds of hole conditions and oil well pump, has satisfied the lifting requirement of oil recovery, water filling.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
The specific embodiment
Describe the concrete structure of foundation a kind of small casing well oil pipe provided by the utility model in detail below in conjunction with accompanying drawing.A kind of small casing well oil pipe comprises body 2 and box cupling 3, and the two ends body of body 2 is provided with external screw thread 1, and the interior circle of box cupling 3 is provided with internal thread 4, and the tubing size after the optimization is: the external diameter of body 2 is Φ 62mm-Φ 69.9mm; The internal diameter of body 2 is Φ 51.8mm-Φ 59mm; The external diameter of box cupling 3 is Φ 74mm-Φ 79mm.The outside dimension of body 2 is preferably Φ 64mm-Φ 68mm.The preferred outside diameter of body 2 is of a size of Φ 65.9mm.The preferred Φ 53mm-of the internal diameter size of body 2 Φ 56mm.The preferred outside diameter size of box cupling 3 is Φ 75mm.
Claims (5)
1. a small casing well oil pipe comprises body (2) and box cupling (3), and the two ends body of body (2) is provided with external screw thread (1), and the interior circle of box cupling (3) is provided with internal thread (4), it is characterized in that:
The external diameter of a, body (2) is Φ 62mm-Φ 69.9mm;
The internal diameter of b, body (2) is Φ 51.8mm-Φ 59mm;
The external diameter of c, box cupling (3) is Φ 74mm-79mm.
2. a kind of small casing well oil pipe according to claim 1 is characterized in that the outside dimension of body (2) is preferably Φ 64mm-Φ 68mm.
3. a kind of small casing well oil pipe according to claim 1 and 2 is characterized in that the preferred outside diameter of body (2) is of a size of Φ 65.9mm.
4. a kind of small casing well oil pipe according to claim 1 is characterized in that the preferred Φ 53mm-of the internal diameter size Φ 56mm of body (2).
5. a kind of small casing well oil pipe according to claim 1, the preferred outside diameter size that it is characterized in that box cupling (3) is Φ 75mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202348399U CN201705223U (en) | 2010-06-10 | 2010-06-10 | Small casing pipe well oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202348399U CN201705223U (en) | 2010-06-10 | 2010-06-10 | Small casing pipe well oil pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201705223U true CN201705223U (en) | 2011-01-12 |
Family
ID=43442378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202348399U Expired - Fee Related CN201705223U (en) | 2010-06-10 | 2010-06-10 | Small casing pipe well oil pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201705223U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113464059A (en) * | 2021-04-28 | 2021-10-01 | 天津钢管制造有限公司 | Double-layer sleeve design method |
-
2010
- 2010-06-10 CN CN2010202348399U patent/CN201705223U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113464059A (en) * | 2021-04-28 | 2021-10-01 | 天津钢管制造有限公司 | Double-layer sleeve design method |
| CN113464059B (en) * | 2021-04-28 | 2022-08-12 | 天津钢管制造有限公司 | Double-layer sleeve design method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151118 Address after: 100029 Beijing Chaoyang District Hui Xin a No. twelve layer 6 Patentee after: SINOPEC OILFIELD SERVICE CORPORATION Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee before: China Petrochemical Group Corp. Patentee before: Downhole Operation Co., Shengli Petroleum Administration, SINOPEC |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110112 Termination date: 20150610 |
|
| EXPY | Termination of patent right or utility model |