CN104047587A - Method for multi-direction deep acidification of oil layer - Google Patents
Method for multi-direction deep acidification of oil layer Download PDFInfo
- Publication number
- CN104047587A CN104047587A CN201410316921.9A CN201410316921A CN104047587A CN 104047587 A CN104047587 A CN 104047587A CN 201410316921 A CN201410316921 A CN 201410316921A CN 104047587 A CN104047587 A CN 104047587A
- Authority
- CN
- China
- Prior art keywords
- oil
- duct
- naked eye
- oil reservoir
- faceted
- 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.)
- Pending
Links
Landscapes
- Earth Drilling (AREA)
Abstract
The invention relates to the field of oil, in particular to a method for multi-direction deep acidification of an oil layer. The method includes the following steps that holes are punched, multiple naked eye hole channels are drilled in an oil-water well in the multiple directions, and every time one naked eye hole channel is drilled, composite acid liquor with the low delivery capacity is squeezed into the naked eye hole channel. The naked eye hole channels are arranged in parallel or not parallel. Each naked eye hole channel further comprises hollow capillary tubes arranged around the hole channel by 360 degrees. The method has the advantages that on the basis that the hole channels with the diameter ranging from 30 mm to 50 mm and the length being 100 m are formed in the periphery of the oil-water well, the capillary tubes are formed on the periphery of each hole channel through the dissolution action of the composite acid liquor for drainage, and therefore three-dimensional drainage channels of the oil layer are formed.
Description
Technical field
The present invention relates to oil field, relate in particular to the method for the multi-faceted deep layer acidifying of oil reservoir.
Background technology
The present invention relates to field of petroleum exploitation, be particularly related to pickling acidifying, Breakdown acidizing, fracture acidizing (acid fracturing) technical field, by the multi-faceted deep layer Acidizing Technology of oil reservoir, can large area increase in-place permeability, make the injection of output, driven water-replacing of oil gas convenient, improve production capacity, excavate to greatest extent limited petroleum resources.
Background technology of the present invention is Acidizing Technology.Pickling is that a small amount of acid solution is injected in pit shaft, removes acid-soluble particle and drilling cuttings and dirt etc. in pit shaft eyelet, and dredges preforation tunnel.Matrix acidifying is, under lower than rock rupture pressure, acid is injected to stratum, rely on the corrosion of acid solution recover or improve near pit shaft in a big way in the permeability of oil reservoir.Acid fracturing (acid fracturing) is, under higher than rock rupture pressure, acid is injected to stratum, forms crack in stratum, forms the crack of high flow conductivity by the inhomogeneous corrosion of acid solution fracture wall material.
The deficiency of background technology: just pit shaft and the preforation tunnel of pickling impact; The scope of matrix acidifying impact is limited to the near wellbore zone of perforated interval; The influence basin of acid fracturing is limited to crack, and has very large randomness.
Summary of the invention
The object of invention: for a kind of method of the multi-faceted deep layer acidifying of oil reservoir of better effects if is provided, specific purposes are shown in multiple essence technique effects of concrete implementation section.
In order to reach as above object, the present invention takes following technical scheme:
The method of the multi-faceted deep layer acidifying of oil reservoir, is characterized in that, comprises following steps, and punching, for a bite oil-water well, creeps into multiple bore holes duct to its multiple directions, and the complete bore hole duct of every brill, clamp-ons low compound acid solution discharge capacity in bore hole duct.
The further technical scheme of the present invention is, the parallel or not parallel distribution in described multiple bore holes duct.
The further technical scheme of the present invention is, described bore hole duct also comprises the capillary tube that hollow 360 degree distribute around duct.
The further technical scheme of the present invention is, long 100 meters of described bore hole duct, diameter 30-50 millimeter.
Adopt as above the present invention of technical scheme, there is following beneficial effect with respect to prior art: the present invention is on the basis, duct that forms diameter 30-50mm, length 100m around oil-water well, utilize the corrosion of compound acid solution, around duct, form capillary earial drainage, thereby form the three-dimensional current by pass of oil reservoir.
Brief description of the drawings
In order to further illustrate the present invention, further describe below in conjunction with accompanying drawing:
Fig. 1 is boring schematic diagram;
Fig. 2 is deep layer acidifying schematic diagram;
Fig. 3 is deep layer acidizing effect schematic diagram;
1. sleeve pipe; 2. oil pick-up tube; 3. continuous steel pipe; 4. centralizer; 5. drill bit; 6. acid filling combination tool; 7. acid solution injection head; 8. main aperture road; 9. capillary dissolution pore.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described, embodiment is not construed as limiting the invention:
For a bite oil-water well, creep into multiple 100 meters to its 360 ° of directions, the bore hole duct of diameter 30-50mm, the complete hole of every brill, utilizes the combination of coiled tubing and flexible pipe low compound acid solution discharge capacity to be clamp-oned in the bore hole duct of 100 meters.(seeing Fig. 2, Fig. 3)
Embodiment mono-:
Core of the present invention is directly compound acid solution to be clamp-oned to oil reservoir depths, and for different physical property oil reservoir differentiation configuration acid formulas.What tradition Acidizing Technology solved is only the blockage problem of pit shaft, perforated interval, near wellbore zone, and acidifying scope exists randomness; The present invention can freely control acidifying scope, to oil-water well around the oil reservoir of more than 30,000 square metres carry out acidification, increase permeability, greatly improve flow conductivity.The present invention can form three-dimensional flow-guiding channel.
The present invention can be in accurate pointing within the scope of 360 ° of oil-water wells, choice and optimization acidifying scope.
Mixed acidizing fluid belongs to prior art.
Embodiment bis-:
It should be noted that, use existing equipment can realize boring, boring belongs to prior art.
Therefore brief introduction is carried out in each parts and position in figure:
Comprise to Fig. 3 in conjunction with Fig. 1:
1. sleeve pipe, is oil well completion sleeve pipe, internal diameter 139.7mm;
2. oil pick-up tube, material is seamless steel pipe, for oil recovery accessory, is positioned at sleeve pipe;
3. continuous steel pipe, connects 100m flexible pipe under 3000m continuous steel pipe, diameter 19.05mm+12.7mm is delivered to target oil reservoir by conveyer in well head oil pick-up tube;
4. centralizer+whipstock;
5. drill bit, for having the self-driven water cutter taking water under high pressure as power;
6. acid filling combination tool, joins with oil pick-up tube, is cylinder, hollow, and outlet is perpendicular to cylinder;
7. acid solution injection head, has self-driven shower nozzle, and injecting acid solution is compound acid solution;
8. main channel, the duct of the diameter 30-50mm forming for holing;
9. capillary dissolution pore is the small corrosion pore forming at oil reservoir after acid filling.
In the process of boring, can, because high pressure is realized microcrack, more contribute to the formation of some capillary dissolution pores.
It should be noted that, the basic scheme that multiple schemes that this patent provides comprise itself, separate, not restriction mutually, but it also can mutually combine in the situation that not conflicting, and reaches multiple effects and jointly realizes.
More than show and described general principle of the present invention, principal character and advantage of the present invention.Those skilled in the art should understand the present invention and not be restricted to the described embodiments; that in above-described embodiment and manual, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall into claimed scope.
Claims (4)
1. the method for the multi-faceted deep layer acidifying of oil reservoir, is characterized in that, comprises following steps, and punching, for a bite oil-water well, creeps into multiple bore holes duct to its multiple directions, and the complete bore hole duct of every brill, clamp-ons low compound acid solution discharge capacity in bore hole duct.
2. the method for the multi-faceted deep layer acidifying of oil reservoir as claimed in claim 1, is characterized in that, the parallel or not parallel distribution in described multiple bore holes duct.
3. the method for the multi-faceted deep layer acidifying of oil reservoir as claimed in claim 1, is characterized in that, described bore hole duct also comprises the capillary tube that hollow 360 degree distribute around duct.
4. the method for the multi-faceted deep layer acidifying of oil reservoir as claimed in claim 1, is characterized in that, long 100 meters of described bore hole duct, diameter 30-50 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410316921.9A CN104047587A (en) | 2014-07-07 | 2014-07-07 | Method for multi-direction deep acidification of oil layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410316921.9A CN104047587A (en) | 2014-07-07 | 2014-07-07 | Method for multi-direction deep acidification of oil layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104047587A true CN104047587A (en) | 2014-09-17 |
Family
ID=51500940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410316921.9A Pending CN104047587A (en) | 2014-07-07 | 2014-07-07 | Method for multi-direction deep acidification of oil layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104047587A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240211A (en) * | 2016-12-26 | 2018-07-03 | 中国石油天然气股份有限公司 | Oil gas water well orients acid fracturing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2117085C (en) * | 1991-09-16 | 2004-01-06 | Dennis R. Wilson | Downhole activated system for perforating a wellbore |
| WO2010148494A1 (en) * | 2009-06-22 | 2010-12-29 | Trican Well Service Ltd. | Apparatus and method for stimulating subterranean formations |
| CN103061684A (en) * | 2013-01-21 | 2013-04-24 | 中国石油集团渤海钻探工程有限公司 | Open-hole horizontal well sectional multi-cluster uniform acidizing tubular column and acidizing method thereof |
| CN203035102U (en) * | 2013-01-21 | 2013-07-03 | 中国石油集团渤海钻探工程有限公司 | Open hole horizontal well segmentation multi-cluster even acidification tubular column |
| CN103835684A (en) * | 2014-03-27 | 2014-06-04 | 西安三才石油工程服务有限公司 | Fine directional arc water injection and oil displacement method |
| CN103867168A (en) * | 2014-03-27 | 2014-06-18 | 西安三才石油工程服务有限公司 | Multi-branch small horizontal well oil production method |
-
2014
- 2014-07-07 CN CN201410316921.9A patent/CN104047587A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2117085C (en) * | 1991-09-16 | 2004-01-06 | Dennis R. Wilson | Downhole activated system for perforating a wellbore |
| WO2010148494A1 (en) * | 2009-06-22 | 2010-12-29 | Trican Well Service Ltd. | Apparatus and method for stimulating subterranean formations |
| CN103061684A (en) * | 2013-01-21 | 2013-04-24 | 中国石油集团渤海钻探工程有限公司 | Open-hole horizontal well sectional multi-cluster uniform acidizing tubular column and acidizing method thereof |
| CN203035102U (en) * | 2013-01-21 | 2013-07-03 | 中国石油集团渤海钻探工程有限公司 | Open hole horizontal well segmentation multi-cluster even acidification tubular column |
| CN103835684A (en) * | 2014-03-27 | 2014-06-04 | 西安三才石油工程服务有限公司 | Fine directional arc water injection and oil displacement method |
| CN103867168A (en) * | 2014-03-27 | 2014-06-18 | 西安三才石油工程服务有限公司 | Multi-branch small horizontal well oil production method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240211A (en) * | 2016-12-26 | 2018-07-03 | 中国石油天然气股份有限公司 | Oil gas water well orients acid fracturing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110397428B (en) | Displacement coalbed methane yield increasing method for coalbed methane jointly mined by vertical well and U-shaped butt well | |
| CN102003140B (en) | Traversing reverse circulating drilling method of horizontal directional drilling pipeline and special drilling bit | |
| CN106837259B (en) | Device and method for increasing yield of marine shallow natural gas hydrate microtubules | |
| RU2334095C1 (en) | Method of high-viscosity oil pool development | |
| CN104533287B (en) | A kind of fish spicule shape multilevel branch horizontal well shale gas reservoir that bores is drilled well and stimulation system | |
| CN104533288B (en) | A kind of fish spicule shape multilevel branch horizontal well shale gas reservoir that bores is drilled the method that well is with increasing production | |
| CN102654049B (en) | Porous linear control hydraulic fracturing method | |
| CN105089603A (en) | Reservoir modifying method through forming crack network by temporary plugging turning in cracks | |
| CN104314569B (en) | The exploitation method of a kind of deep Pore brine and low-grade solid kalium mine | |
| CN104653148A (en) | Well group reforming comprehensive utilization method for waste oil wells | |
| CN104695923A (en) | Method for realizing sectional multi-cluster fracture of horizontal well by adopting soluble balls | |
| CN103912304A (en) | Method for locally extracting gas of soft coal seams | |
| CN104405349A (en) | Method for improving water-flooding development effect of bottom water reservoir by utilizing multistage high-pressure water jet | |
| CN210370605U (en) | Geothermal single well fracturing system | |
| Xiumin et al. | Research and application of gas-lift reverse circulation drilling technology to geothermal well construction in Dalian Jiaoliu Island | |
| CN205297337U (en) | Cave ware is drawn in reaming for well drilling | |
| CN207728393U (en) | The casing programme of chamber is made for salt hole air reserved storeroom | |
| CN206617144U (en) | A kind of ocean shallow layer gas hydrate micro-pipe increasing device | |
| CN204457716U (en) | Horizontal well process pipe string | |
| WO2014138301A3 (en) | Through tubing perpendicular boring | |
| CN109630076A (en) | A kind of method of radially horizontal well and decompression heat injection unitized production gas hydrates | |
| US20170247990A1 (en) | Method for drilling and fracture treating multiple wellbores | |
| CN104047587A (en) | Method for multi-direction deep acidification of oil layer | |
| CN204457620U (en) | Horizontal well intelligence sliding sleeve | |
| CN105201436B (en) | The method of high-pressure hose is sent into using narrow gap high-velocity fluid drag |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140917 |