CN201963286U - Oil production pipe for reducing water content of central pipe of horizontal well - Google Patents
Oil production pipe for reducing water content of central pipe of horizontal well Download PDFInfo
- Publication number
- CN201963286U CN201963286U CN2011200628760U CN201120062876U CN201963286U CN 201963286 U CN201963286 U CN 201963286U CN 2011200628760 U CN2011200628760 U CN 2011200628760U CN 201120062876 U CN201120062876 U CN 201120062876U CN 201963286 U CN201963286 U CN 201963286U
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- horizontal well
- pipe
- oil
- central tube
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 21
- 238000004519 manufacturing process Methods 0.000 title abstract description 17
- 238000000605 extraction Methods 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 35
- 239000012530 fluid Substances 0.000 description 5
- 230000004941 influx Effects 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 241000372132 Hydrometridae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The horizontal well central tube reduces the oil production pipe column containing water, and is applied to oil field horizontal well oil production. The lower part of a sleeve of the horizontal section of the horizontal well is connected with a sieve tube, and the outside of the sieve tube is provided with a sleeve outer packer; the lower end of the sieve tube is connected with a bottom plug; an oil pipe and an oil extraction pump are arranged in the straight well section of the horizontal well and in the sleeve; the method is characterized in that: the lower end of the oil extraction pump is connected with a lower pump central pipe, and the lower pump central pipe is a front-section blind pipe, a perforated central pipe and a tail-end blind pipe in the horizontal section of the horizontal well; the lower end of the front-section blind pipe is connected with a perforated central pipe, and the lower end of the perforated central pipe is connected with a tail-end blind pipe. The effect is as follows: the central pipe with a certain length is arranged below the horizontal section of the horizontal well, so that the existing flowing pressure distribution of the horizontal well is disturbed, and the liquid production capacity of the main water outlet layer section of the horizontal well is reduced by adjusting the uniformity of a liquid production section, so that the water reduction and oil increase of the horizontal well are realized.
Description
Technical field
The utility model relates to oil field oil recovery professional skill field, and particularly the horizontal well production tubing string is a kind of moisture flow string of horizontal well that reduces
Background technology
In the horizontal well production later stage, crude oil water containing progressively raises.It is moisture to adopt shutoff method to reduce.Water blockoff generally adopts machinery and two kinds of methods of chemical water shutoff, the perforated pipe of oil field researcher design, the well-completing process tubing string of blind pipe fit tube external packer can effectively delay bottom water coning, but tubing string technology more complicated and be mainly used in horizontal well completion in early stage.
At present, some oil fields are in the bottom water reservoir horizontal wells high water-cut development later stage, by adding central tube method, realize reducing the moisture purpose of horizontal well.The method is primarily aimed at sieve tube completion, can't be applied to control the horizontal well of water measure.
The utility model content
The purpose of this utility model is: provide a kind of horizontal well central tube to reduce moisture flow string, be lowered to the central tube (punching oil pipe) of certain-length by horizontal segment at horizontal well, the existing flowing pressure of interference level well distributes, by adjusting the production profile uniformity liquid-producing capacity of the main water exit interval of horizontal well is lowered, thereby realize the horizontal well decreasing water cut and increasing oil.Solve the problem that the moisture rising of horizontal well bottom water reservoir is fast, later development is of poor benefits.
The technical solution adopted in the utility model is: the horizontal well central tube reduces moisture flow string, mainly by sleeve pipe, oil pipe, oil extraction pump, screen casing, external casing packer, the end, is stifled and the pump lower center tube is formed; Sleeve pipe is arranged in horizontal well, be connected with screen casing, external casing packer is arranged, screen casing is fixed in the horizontal well by external casing packer in the screen casing outside in the bottom of the sleeve pipe of the horizontal segment of horizontal well; Be connected with the end in the lower end of screen casing stifled; In the straight well section of horizontal well and oil pipe is arranged in sleeve pipe, be connected with oil extraction pump in the lower end of oil pipe, can be pumped into ground to well liquid by oil extraction pump.It is characterized in that: be connected with the pump lower center tube in the lower end of oil extraction pump, described pump lower center tube is leading portion blind pipe, porose central tube and tail end blind pipe at the horizontal segment of horizontal well; Connect porose central tube in the lower end of leading portion blind pipe, the lower end of porose central tube connects the tail end blind pipe.After the lower end of oil extraction pump connects central tube, reach the purpose of adjusting production profile by optimizing central tube length and structure, realize decreasing water cut and increasing oil.
The position of described porose central tube is in screen casing.Be that porose central tube is relative with screen casing.
Described porose central tube is that to be evenly distributed with diameter on tube wall be 8～15 millimeters through hole, and the density of through hole is every meter 10～20 hole.
The horizontal well central tube reduces moisture principle: predict by real standard well production profile, judge the higher well fragment position of production fluid influx, the section that general production fluid is high also is simultaneously the main contribution section of water, just can reach the purpose of oil increasing precipitation by the production fluid amount that reduces the high influx section of production fluid.For the horizontal well of high water-cut stage, when recovering the oil, central tube mainly considers to reduce the liquid contribution of influx upper sector, and the production profile uniformity coefficient is less important consideration; The horizontal well of the low Water-cut Period of centering promptly will consider to reduce the production fluid influx, considers each section of pit shaft flow uniformity coefficient again.Adopt central tube to recover the oil in the bottom water reservoir horizontal well development later stage, can reach the purpose of oil increasing precipitation.
The beneficial effects of the utility model: the utility model horizontal well central tube reduces moisture flow string, be lowered to the central tube (punching oil pipe) of certain-length by horizontal segment at horizontal well, the existing flowing pressure of interference level well distributes, by adjusting the production profile uniformity liquid-producing capacity of the main water exit interval of horizontal well is lowered, thereby realize the horizontal well decreasing water cut and increasing oil.Solve oil recovery bottleneck problems such as the moisture rising of horizontal well bottom water reservoir is fast, the water logging of solution horizontal well.Central tube 11 wells that recover the oil are used in test on the bottom water reservoir horizontal well of oil field, have 10 mouthfuls of wells to see comparatively significantly oil increasing precipitation effect, and average day produce oil of initial stage is brought up to 6.6 tons from 3.82 tons, and comprehensive water cut reduces to 93.46% by 96.5%.
Description of drawings
Fig. 1 is that the utility model horizontal well central tube reduces moisture flow string structural profile schematic diagram.
Among the figure, the 1-sleeve pipe, the 2-oil pipe, the 3-oil extraction pump, the 4-screen casing, the 5-external casing packer, stifled at the bottom of the 6-, 7-pump lower center tube, 8-leading portion blind pipe, the porose central tube of 9-, 10-tail end blind pipe.
The specific embodiment
Embodiment 1: reducing moisture flow string with a horizontal well central tube is example, and the utility model is described in further detail.
Consult Fig. 1.The utility model horizontal well central tube reduces moisture flow string, mainly is made up of sleeve pipe 1, oil pipe 2, oil extraction pump 3, screen casing 4, external casing packer 5, the end stifled 6 and pump lower center tube 7.Sleeve pipe 1 is arranged in horizontal well, be connected with screen casing 4, external casing packer 5 is arranged, screen casing 4 is fixed in the horizontal well by external casing packer 5 in screen casing 4 outsides in the bottom of the sleeve pipe 1 of the horizontal segment of horizontal well; Be connected with the end stifled 6 in the lower end of screen casing 4; In the straight well section of horizontal well and oil pipe 2 is arranged, be connected with oil extraction pump 3 in the lower end of oil pipe 2 in sleeve pipe 1.Oil extraction pump 3 is rod pumping pumps.
Be connected with pump lower center tube 7 in the lower end of oil extraction pump 3, central tube 7 is that internal diameter is that 62 millimeters, external diameter are 73 millimeters plain tubing.Described pump lower center tube 7 has leading portion blind pipe 8, porose central tube 9 and tail end blind pipe 10 3 parts to connect at the horizontal segment of horizontal well.Connect porose central tube 9 in the lower end of leading portion blind pipe 8, the lower end of porose central tube 9 connects tail end blind pipe 10.The length of leading portion blind pipe 8 is 112 meters, and the length of porose central tube 9 is 158 meters, and the length of tail end blind pipe 10 is 93 meters.
The position of porose central tube 9 is in screen casing 4.Be that porose central tube 9 is relative with screen casing 4.Be evenly distributed with diameter and be 13 millimeters through hole on the tube wall of porose central tube 9, the density of through hole is every meter 16 hole.
Claims (3)
1. a horizontal well central tube reduces moisture flow string, mainly is made up of sleeve pipe (1), oil pipe (2), oil extraction pump (3), screen casing (4), external casing packer (5), the end stifled (6) and pump lower center tube (7); Sleeve pipe (1) is arranged in horizontal well, be connected with screen casing (4), external casing packer (5) is arranged, screen casing (4) is fixed in the horizontal well by external casing packer (5) in screen casing (4) outside in the bottom of the sleeve pipe (1) of the horizontal segment of horizontal well; Be connected with the end stifled (6) in the lower end of screen casing (4); In the straight well section of horizontal well and oil pipe (2) is arranged, be connected with oil extraction pump (3) in the lower end of oil pipe (2) in sleeve pipe (1); It is characterized in that: be connected with pump lower center tube (7) in the lower end of oil extraction pump (3), described pump lower center tube (7) is leading portion blind pipe (8), porose central tube (9) and tail end blind pipe (10) at the horizontal segment of horizontal well; Connect porose central tube (9) in the lower end of leading portion blind pipe (8), the lower end of porose central tube (9) connects tail end blind pipe (10).
2. horizontal well central tube according to claim 1 reduces moisture flow string, and it is characterized in that: the position of described porose central tube (9) is in screen casing (4).
3. horizontal well central tube according to claim 1 reduces moisture flow string, it is characterized in that: described porose central tube (9) is that to be evenly distributed with diameter on tube wall be 8～15 millimeters through hole, and the density of through hole is every meter 10～20 hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200628760U CN201963286U (en) | 2011-03-10 | 2011-03-10 | Oil production pipe for reducing water content of central pipe of horizontal well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200628760U CN201963286U (en) | 2011-03-10 | 2011-03-10 | Oil production pipe for reducing water content of central pipe of horizontal well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201963286U true CN201963286U (en) | 2011-09-07 |
Family
ID=44525821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200628760U Expired - Lifetime CN201963286U (en) | 2011-03-10 | 2011-03-10 | Oil production pipe for reducing water content of central pipe of horizontal well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201963286U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105625978A (en) * | 2014-11-06 | 2016-06-01 | 中国石油天然气股份有限公司 | Central pipe liquid control pipe column of horizontal well and liquid control pipe column process of horizontal well |
| CN106837262A (en) * | 2017-04-14 | 2017-06-13 | 张兴 | Horizontal well completion tubular pile and horizontal well |
| CN110821462A (en) * | 2019-10-16 | 2020-02-21 | 新疆中凌工程技术有限公司 | Method for drawing tail end of horizontal well group with interlayer in SAGD control well reservoir |
| CN111075363A (en) * | 2019-11-28 | 2020-04-28 | 中国海洋石油集团有限公司 | Horizontal well segmentation water control pipe post |
| CN113062733A (en) * | 2021-04-13 | 2021-07-02 | 西南石油大学 | Segmented horizontal well water control three-dimensional simulation experiment device and experiment method thereof |
-
2011
- 2011-03-10 CN CN2011200628760U patent/CN201963286U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105625978A (en) * | 2014-11-06 | 2016-06-01 | 中国石油天然气股份有限公司 | Central pipe liquid control pipe column of horizontal well and liquid control pipe column process of horizontal well |
| CN105625978B (en) * | 2014-11-06 | 2018-04-03 | 中国石油天然气股份有限公司 | Central pipe liquid control pipe column of horizontal well and liquid control pipe column process of horizontal well |
| CN106837262A (en) * | 2017-04-14 | 2017-06-13 | 张兴 | Horizontal well completion tubular pile and horizontal well |
| CN110821462A (en) * | 2019-10-16 | 2020-02-21 | 新疆中凌工程技术有限公司 | Method for drawing tail end of horizontal well group with interlayer in SAGD control well reservoir |
| CN110821462B (en) * | 2019-10-16 | 2022-03-25 | 新疆中凌工程技术有限公司 | Method for drawing tail end of horizontal well group with interlayer in SAGD control well reservoir |
| CN111075363A (en) * | 2019-11-28 | 2020-04-28 | 中国海洋石油集团有限公司 | Horizontal well segmentation water control pipe post |
| CN113062733A (en) * | 2021-04-13 | 2021-07-02 | 西南石油大学 | Segmented horizontal well water control three-dimensional simulation experiment device and experiment method thereof |
| CN113062733B (en) * | 2021-04-13 | 2022-04-12 | 西南石油大学 | Segmented horizontal well water control three-dimensional simulation experiment device and experiment method 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: 20110907 |
|
| CX01 | Expiry of patent term |