CN103089149A - Well drilling method for improving lifting efficiency - Google Patents
Well drilling method for improving lifting efficiency Download PDFInfo
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- CN103089149A CN103089149A CN2011103367841A CN201110336784A CN103089149A CN 103089149 A CN103089149 A CN 103089149A CN 2011103367841 A CN2011103367841 A CN 2011103367841A CN 201110336784 A CN201110336784 A CN 201110336784A CN 103089149 A CN103089149 A CN 103089149A
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- well
- lifting device
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- horizontal well
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Abstract
The invention discloses a well drilling method for improving the lifting efficiency. The technical scheme includes that the well drilling method comprises firstly, analyzing a combination of an actual drilling track of an original horizontal well bore and a completion string and a tripping-in position in detail, and determining communication positions of a vertical well and a horizontal well and the position of the vertical well in order to change the flowing direction of formation fluid to avoid an original fingering channel and improve the flow profile of the formation fluid; then communicating a straight-hole drilling section with the original horizontal well bore by the aid of a vertical well drilling technology, and deepening the straight-hole drilling section to a certain degree to guarantee that a lifting device is always positioned below a working fluid level; cooperating with a sand control process to realize well completion; and finally tripping the lifting device to a position below an original well section and starting production. The well drilling method has the advantages that merits of the horizontal well and merits of the vertical well are combined, shortcomings of the horizontal well and shortcomings of the vertical well are overcome, horizontal well drilling and vertical well exploiting are realized, the flow profile is adjusted, the performance of the lifting device is sufficiently played, the service life of the lifting device is prolonged, and the lifting efficiency of the lifting device is improved.
Description
Technical field
The present invention relates to a kind of boring method of exploiting the raising lifting efficiency in field for oil, natural gas exploration and development and salt mine.
Background technology
In the middle and later periods of exploitation, bottom pressure is lower, just must be with unit in the inclination section at well depth place or in horizontal segment.For the horizontal well of middle short-radius, some lifting devices just are difficult to by bending section, can only use in the peupendicular hole section especially, and this has just limited lifting device and has brought into play its optimum efficiency.In addition, in horizontal well, gas separates in pit shaft, assembles, and upwards fluctuation is to ground along pit shaft, and great changes will take place to cause productive rate and ground pressure.If lower lifting device production, and lifting device in this case is positioned at again on gas flow, underload or gas lock can occur.
Summary of the invention
Purpose of the present invention is exactly the problem that exists for prior art, providing a kind of is lowered into lifting device in the straight well that is connected with horizontal well, reduce requirement to lifting device with this, improve lifting efficiency, reduce the boring method that is used for improving lifting efficiency of development of resources integrated cost.
For solving the problems of the technologies described above, the present invention has designed the boring method that a cover is similar to connected well, make lifting device be lowered into horizontal segment or below horizontal segment, thereby give full play to lifting device and adopt the large advantage of liquid measure, reduce simultaneously the requirement to lifting device, the enforcement of other later stage measures of being more convenient for.
Technical scheme is: at first, real combination and the lower implantation site of boring track and completion tubular column of labor previous level well, that determines straight well and horizontal well is communicated with position and straight well well location, purpose is that the flow direction that changes formation fluid avoids original fingering passage, thereby improves the formation fluids section; Then, use Vertical-drilling Technology, drilled straight well is communicated with former horizontal hole, and suitably deepens certain depth, guarantees that lifting device is in below producing fluid level all the time; Coordinate the sand-preventing process completion; At last, be lowered to lifting device to former net horizontal section with upper/lower positions, begin to go into operation.
Advantage of the present invention is: combine the advantage of horizontal well and straight well, greatly made up deficiency both, realized the exploitation of horizontal well drilling straight well; Change the Fluid Flow in A on former pit shaft and stratum, adjusted flow profile, improved the sweep efficiency of horizontal well; Give full play to lifting device and adopted the large advantage of liquid measure, reduced the requirement to lifting device, improved working life.
Description of drawings
Fig. 1 is a kind of boring method schematic diagram that improves lifting efficiency.
In Fig. 1: 1. previous level well, 2. straight well, 3. straight well pithead position, 4. liquid level, 5. connectivity points, 6. lifting device.
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing 1.
In the time of near liquid level 4 in former well is reduced to horizontal segment 1, lifting efficiency significantly reduces, and can adopt the inventive method to improve lifting efficiency.According to former horizontal well 1 design data and analysis of data, determine the pithead position 3 of straight well 2 directly over its shaft bottom horizontal segment (or tilting section), use 3 dozens of a bite straight wells 2 of pithead position that Vertical-drilling Technology (prior art) is being determined, make it be communicated with 5 with former horizontal well 3 and also suitably deepen certain depth, coordinate sand-preventing process (existing sand proof well technology) completion, be lowered to lifting device (existing apparatus) 6 to the following certain depth of former net horizontal section 1, thereby give full play to lifting device 6 performances, improve lifting efficiency.
Claims (1)
1. a boring method that improves lifting efficiency, is characterized in that: according to former horizontal well design, determine to intend beating the pithead position of straight well directly over its shaft bottom; Use the vertical drilling method and beat a bite straight well at the pithead position of determining, make straight well be communicated with rear with former horizontal well and increase the degree of depth; Coordinate the sand-preventing process completion; Be lowered to lifting device to former net horizontal section with upper/lower positions, begin to go into operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103367841A CN103089149A (en) | 2011-10-31 | 2011-10-31 | Well drilling method for improving lifting efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103367841A CN103089149A (en) | 2011-10-31 | 2011-10-31 | Well drilling method for improving lifting efficiency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103089149A true CN103089149A (en) | 2013-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103367841A Pending CN103089149A (en) | 2011-10-31 | 2011-10-31 | Well drilling method for improving lifting efficiency |
Country Status (1)
| Country | Link |
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| CN (1) | CN103089149A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603674A (en) * | 2013-11-29 | 2014-02-26 | 中国神华能源股份有限公司 | Method for communicating mine laneway with ground |
| CN104204406A (en) * | 2010-11-19 | 2014-12-10 | 卡梅伦钻机方案有限公司 | Systems and methods for continuous and near continuous drilling |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1247930A (en) * | 1998-05-27 | 2000-03-22 | 特克马克国际发展公司 | Multiple effluent method for producing petroleum from tar sand |
| WO2004061267A1 (en) * | 2002-12-18 | 2004-07-22 | Cdx Gas, L.L.C. | Method and system for circulating fluid in a well system |
| US20050115709A1 (en) * | 2002-09-12 | 2005-06-02 | Cdx Gas, Llc | Method and system for controlling pressure in a dual well system |
| CN101936142A (en) * | 2010-08-05 | 2011-01-05 | 北京奥瑞安能源技术开发有限公司 | Aerated underbalanced drilling method for coal-bed gas |
| CN102213089A (en) * | 2011-06-02 | 2011-10-12 | 中国石油天然气股份有限公司 | Oil extraction method and oil extraction system for shallow heavy oil reservoir |
-
2011
- 2011-10-31 CN CN2011103367841A patent/CN103089149A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1247930A (en) * | 1998-05-27 | 2000-03-22 | 特克马克国际发展公司 | Multiple effluent method for producing petroleum from tar sand |
| US20050115709A1 (en) * | 2002-09-12 | 2005-06-02 | Cdx Gas, Llc | Method and system for controlling pressure in a dual well system |
| WO2004061267A1 (en) * | 2002-12-18 | 2004-07-22 | Cdx Gas, L.L.C. | Method and system for circulating fluid in a well system |
| CN101936142A (en) * | 2010-08-05 | 2011-01-05 | 北京奥瑞安能源技术开发有限公司 | Aerated underbalanced drilling method for coal-bed gas |
| CN102213089A (en) * | 2011-06-02 | 2011-10-12 | 中国石油天然气股份有限公司 | Oil extraction method and oil extraction system for shallow heavy oil reservoir |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104204406A (en) * | 2010-11-19 | 2014-12-10 | 卡梅伦钻机方案有限公司 | Systems and methods for continuous and near continuous drilling |
| CN103603674A (en) * | 2013-11-29 | 2014-02-26 | 中国神华能源股份有限公司 | Method for communicating mine laneway with ground |
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Application publication date: 20130508 |