CN204609851U - Viscous crude SAGD dual horizontal well multiple-branching construction - Google Patents
Viscous crude SAGD dual horizontal well multiple-branching construction Download PDFInfo
- Publication number
- CN204609851U CN204609851U CN201520309249.0U CN201520309249U CN204609851U CN 204609851 U CN204609851 U CN 204609851U CN 201520309249 U CN201520309249 U CN 201520309249U CN 204609851 U CN204609851 U CN 204609851U
- Authority
- CN
- China
- Prior art keywords
- horizontal
- steam injection
- well
- extending section
- viscous crude
- 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
Links
Abstract
The utility model provides a kind of viscous crude SAGD dual horizontal well multiple-branching construction, comprises horizontal steam injection well and horizontal production well, and the horizontal-extending section of horizontal steam injection well is positioned at the top of the horizontal-extending section of horizontal production well; The horizontal-extending section of horizontal steam injection well is communicated with at least one steam injection Multilateral Wells.Viscous crude SAGD dual horizontal well multiple-branching construction of the present utility model, by being communicated with at least one steam injection Multilateral Wells in the horizontal-extending section of horizontal steam injection well, improves development degree and the tar productivity of vapor chamber, thus improves viscous crude daily output.
Description
Technical field
The utility model relates to a kind of a kind of oil extraction structure of viscous crude SAGD dual horizontal well, particularly a kind of viscous crude SAGD dual horizontal well multiple-branching construction.
Background technology
Viscous crude SAGD dual horizontal well is the main well type of one of China and foreign countries' heavy oil development, as shown in Figure 4, its main technique bores two mouthfuls of water horizontal wells in oil reservoir 3, be horizontal steam injection well 1 flatly, be horizontal production well 2 flatly, and the horizontal-extending section 11 of horizontal steam injection well 1 is positioned at the top of the horizontal-extending section 21 of horizontal production well 2, and the distance of horizontal-extending section 21 midfeather several meters of the horizontal-extending section 11 of horizontal steam injection well 1 and horizontal production well 2.During oil recovery, in pit shaft, high-temperature steam is injected by horizontal steam injection well 1, thus vapour chamber is formed in certain limit around pit shaft, the viscous crude being solid or semi-solid state is softened, liquefying becomes the horizontal-extending section 21 that fluid flows into horizontal production well 2 below, is then plucked out of utilization.
This technology has remarkable effect for the stratum that reservoir homogenieity is stronger, if but reservoir is stronger, there is degree of porosity, regional area that permeability value is lower, or when there is interlayer, the application of this technology can be severely limited, the region that these degree of porosity, permeability value are lower and interlayer can intercept steam and upwards spread, thus cause insufficient growth of vapor chamber, waste ample resources and time.But, the geological environment that China's heavy crude reservoir is formed is mostly lake, river continental deposit, the regional oil reservoir being applicable to viscous crude SAGD dual horizontal well is thicker again, mean the change that " 30 years west of a river, 30 years east of a river " can occur repeatedly in very long geologic(al) period depositional environment, thus cause the non-homogeneity in section and plane.
Utility model content
The problem that the stronger reservoir of heterogeneous body can cause the insufficient growth of vapor chamber to cause daily output lower is applied in order to overcome viscous crude SAGD dual horizontal well, the utility model provides a kind of viscous crude SAGD dual horizontal well multiple-branching construction, in application process, the development degree of vapor chamber can be improved, improve tar productivity, thus improve viscous crude daily output.
The utility model solves the technical scheme that its technical problem adopts: a kind of viscous crude SAGD dual horizontal well multiple-branching construction, comprises horizontal steam injection well and horizontal production well, and the horizontal-extending section of horizontal steam injection well is positioned at the top of the horizontal-extending section of horizontal production well; The horizontal-extending section of horizontal steam injection well is communicated with at least one steam injection Multilateral Wells.
The horizontal-extending section of horizontal steam injection well is communicated with multiple steam injection Multilateral Wells, and steam injection Multilateral Wells is arranged on the one or both sides of the horizontal-extending section of horizontal steam injection well.
Steam injection Multilateral Wells is arranged on the upside of the horizontal-extending section of horizontal steam injection well obliquely.
Multiple steam injection Multilateral Wells is arranged on the both sides, front and back of the horizontal-extending section of horizontal steam injection well.The multiple steam injection Multilateral Wells being arranged on the same side of the horizontal-extending section of horizontal steam injection well are positioned at same plane and are parallel to each other, and the angle between the horizontal-extending section of steam injection Multilateral Wells and horizontal steam injection well is greater than 0 ° and is less than 90 °.
The horizontal-extending section of horizontal steam injection well and the horizontal-extending section of horizontal production well are positioned at same perpendicular, and the distance between the horizontal-extending section of horizontal steam injection well and the horizontal-extending section of horizontal production well is 1 meter to 10 meters, and steam injection Multilateral Wells is positioned at oil reservoir.
The diameter of steam injection Multilateral Wells is less than or equal to the diameter of the horizontal-extending section of horizontal steam injection well.
The diameter of steam injection Multilateral Wells is 0.1 meter to 0.5 meter.
The length of steam injection Multilateral Wells is 10 meters to 1000 meters.
Steam injection Multilateral Wells is barefoot completion.
The beneficial effect of viscous crude SAGD dual horizontal well multiple-branching construction of the present utility model, by being communicated with at least one steam injection Multilateral Wells in the horizontal-extending section of horizontal steam injection well, improve development degree and the tar productivity of vapor chamber, thus improve the daily output of viscous crude.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described further.
Fig. 1 is the structural representation of viscous crude SAGD dual horizontal well multiple-branching construction of the present utility model.
Fig. 2 is the well group schematic diagram of viscous crude SAGD dual horizontal well multiple-branching construction of the present utility model in oil reservoir.
Fig. 3 is the well group schematic top plan view of viscous crude SAGD dual horizontal well multiple-branching construction of the present utility model in oil reservoir.
Fig. 4 is the well group schematic diagram of viscous crude SAGD dual horizontal well in oil reservoir of prior art.
Description of reference numerals:
1. horizontal steam injection well, 11. horizontal-extending sections, 111. steam injection Multilateral Wells, 2. horizontal production well, 21. horizontal-extending section, 3. oil reservoirs, 301. oil reservoir tops, at the bottom of 302. oil reservoirs, 31. first interlayers, 32. second interlayers, 33. the 3rd interlayers.
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and detailed description of the invention of the present utility model is described.
As shown in Figure 1, the utility model provides a kind of viscous crude SAGD dual horizontal well multiple-branching construction, and it comprises horizontal steam injection well 1 and horizontal production well 2, and the horizontal-extending section 11 of horizontal steam injection well 1 is positioned at the top of the horizontal-extending section 21 of horizontal production well 2; The horizontal-extending section 11 of horizontal steam injection well 1 is communicated with at least one steam injection Multilateral Wells 111.
Due to the geological environment of Chinese heavy crude reservoir, the heterogeneous body causing reservoir is comparatively strong, and make viscous crude SAGD dual horizontal well in application process, the situation of the insufficient growth of vapor chamber has generation more, reduces output.Viscous crude SAGD dual horizontal well multiple-branching construction of the present utility model, be communicated with one or more steam injection Multilateral Wells 111 in the horizontal-extending section 11 of horizontal steam injection well 1, the concrete quantity of steam injection Multilateral Wells 111 and particular location are determined according to the concrete condition of oil reservoir, to be communicated with the inside of oil reservoir, break the obstacle in interlayer or degree of porosity, region that permeability value is lower.In addition, when injecting steam in horizontal steam injection well 1, also vapour chamber can be formed in certain limit around steam injection Multilateral Wells 111, and interact with the vapour chamber that the major trunk roads of the horizontal-extending section 11 of horizontal steam injection well 1 are formed, thus expand the influence basin of vapor chamber, improve the development degree of vapor chamber, improve tar productivity, thus improve viscous crude daily output.
When the concrete condition of oil reservoir is comparatively complicated, multiple steam injection Multilateral Wells 111 can be communicated with in the horizontal-extending section 11 of horizontal steam injection well 1, and multiple steam injection Multilateral Wells 111 is arranged on the one or both sides of the horizontal-extending section 11 of horizontal steam injection well 1.Multiple steam injection Multilateral Wells 111 forms the vapour chamber of certain limit simultaneously around, and interact between each vapour chamber, fully can expand the influence basin of vapor chamber, vapor chamber is reached full growth, tar productivity can be improved greatly, improve output and resource utilization.
In the specific embodiment of as shown in Figure 2, for oil reservoir 3, the first interlayer 31 is dispersed with between 302 at the bottom of the oil reservoir top 301 of oil reservoir 3 and the oil reservoir of oil reservoir 3, second interlayer 32 and the 3rd interlayer 33, in order to break the obstacle of three interlayers, horizontal-extending section 11 is communicated with 4 steam injection Multilateral Wells 111, and steam injection Multilateral Wells 111 is arranged on the upside of horizontal-extending section 11 obliquely, 4 steam injection Multilateral Wells 111 cross-distribution are in the both sides, front and back of horizontal-extending section 11, as shown in Figure 3, wherein, 2 steam injection Multilateral Wells 111 are distributed in the front side of horizontal-extending section 11, 2 steam injection Multilateral Wells 111 are distributed in the rear side of horizontal-extending section 11.Be parallel to each other between 2 the steam injection Multilateral Wells 111 being arranged on the front side of the horizontal-extending section 11 of horizontal steam injection well 1 or be bordering on parallel, be parallel to each other between 2 the steam injection Multilateral Wells 111 being arranged on the rear side of the horizontal-extending section 11 of horizontal steam injection well 1 or be bordering on parallel, the angle between steam injection Multilateral Wells 111 and horizontal steam injection well 1 is greater than 0 ° and is less than 90 °.
Again as shown in Figure 2, horizontal-extending section 11 and horizontal-extending section 21 are positioned at same perpendicular, distance between horizontal-extending section 11 and horizontal-extending section 21 is 1 meter to 10 meters, and steam injection Multilateral Wells 111 is positioned at oil reservoir 3, and namely the vertical depth height of steam injection Multilateral Wells 111 is less than or equal to the vertical depth height of oil reservoir.In addition, the diameter of steam injection Multilateral Wells 111 is less than or equal to the diameter of horizontal-extending section 11, and particularly, the diameter of steam injection Multilateral Wells 111 is 0.1 meter to 0.5 meter; The length of steam injection Multilateral Wells 111 is less than or equal to the length of horizontal-extending section 11, and particularly, the length of steam injection Multilateral Wells 111 is 10 meters to 1000 meters.
In a concrete embodiment, steam injection Multilateral Wells 111 is barefoot completion, when the viscous crude being solid or semi-solid state is softening, liquefaction becomes fluid, horizontal-extending section 11 can be flowed directly into by steam injection Multilateral Wells 111, and then penetrate into the horizontal-extending section 21 of horizontal production well 2, be plucked out of utilization.
The foregoing is only the schematic detailed description of the invention of the utility model, and be not used to limit scope of the present utility model.Any those skilled in the art, the equivalent variations done under the prerequisite not departing from design of the present utility model and principle and amendment, all should belong to the scope of the utility model protection.And it should be noted that, each ingredient of the present utility model is not limited in above-mentioned overall applicability, the each technical characteristic described in manual of the present utility model can select one to adopt separately or select the multinomial use that combines according to actual needs, therefore, the utility model naturally covers other relevant with this case innovative point and combines and embody rule.
Claims (10)
1. a viscous crude SAGD dual horizontal well multiple-branching construction, it is characterized in that, described viscous crude SAGD dual horizontal well multiple-branching construction comprises horizontal steam injection well (1) and horizontal production well (2), and the horizontal-extending section (11) of horizontal steam injection well (1) is positioned at the top of the horizontal-extending section (21) of horizontal production well (2); The horizontal-extending section (11) of horizontal steam injection well (1) is communicated with at least one steam injection Multilateral Wells (111).
2. viscous crude SAGD dual horizontal well multiple-branching construction according to claim 1, it is characterized in that, the horizontal-extending section (11) of horizontal steam injection well (1) is communicated with multiple steam injection Multilateral Wells (111), and steam injection Multilateral Wells (111) is arranged on the one or both sides of the horizontal-extending section (11) of horizontal steam injection well (1).
3. viscous crude SAGD dual horizontal well multiple-branching construction according to claim 2, is characterized in that, steam injection Multilateral Wells (111) is arranged on the upside of the horizontal-extending section (11) of horizontal steam injection well (1) obliquely.
4. viscous crude SAGD dual horizontal well multiple-branching construction according to claim 3, is characterized in that, multiple steam injection Multilateral Wells (111) is arranged on the both sides, front and back of the horizontal-extending section (11) of horizontal steam injection well (1).
5. viscous crude SAGD dual horizontal well multiple-branching construction according to claim 4, it is characterized in that, the multiple steam injection Multilateral Wells (111) being arranged on the same side of the horizontal-extending section (11) of horizontal steam injection well (1) are positioned at same plane and are parallel to each other, and the angle between the horizontal-extending section (11) of steam injection Multilateral Wells (111) and horizontal steam injection well (1) is greater than 0 ° and is less than 90 °.
6. viscous crude SAGD dual horizontal well multiple-branching construction according to claim 1, it is characterized in that, the horizontal-extending section (11) of horizontal steam injection well (1) and the horizontal-extending section (21) of horizontal production well (2) are positioned at same perpendicular, distance between the horizontal-extending section (11) of horizontal steam injection well (1) and the horizontal-extending section (21) of horizontal production well (2) is 1 meter to 10 meters, and steam injection Multilateral Wells (111) is positioned at oil reservoir (3).
7. viscous crude SAGD dual horizontal well multiple-branching construction according to claim 1, is characterized in that, the diameter of steam injection Multilateral Wells (111) is less than or equal to the diameter of the horizontal-extending section (11) of horizontal steam injection well (1).
8. viscous crude SAGD dual horizontal well multiple-branching construction according to claim 7, is characterized in that, the diameter of steam injection Multilateral Wells (111) is 0.1 meter to 0.5 meter.
9. viscous crude SAGD dual horizontal well multiple-branching construction according to claim 1, is characterized in that, the length of steam injection Multilateral Wells (111) is 10 meters to 1000 meters.
10. viscous crude SAGD dual horizontal well multiple-branching construction according to claim 1, it is characterized in that, steam injection Multilateral Wells (111) is barefoot completion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520309249.0U CN204609851U (en) | 2015-05-14 | 2015-05-14 | Viscous crude SAGD dual horizontal well multiple-branching construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520309249.0U CN204609851U (en) | 2015-05-14 | 2015-05-14 | Viscous crude SAGD dual horizontal well multiple-branching construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204609851U true CN204609851U (en) | 2015-09-02 |
Family
ID=53962424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520309249.0U Expired - Fee Related CN204609851U (en) | 2015-05-14 | 2015-05-14 | Viscous crude SAGD dual horizontal well multiple-branching construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204609851U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106545321A (en) * | 2015-09-18 | 2017-03-29 | 中国石油化工股份有限公司 | A kind of method of gravity auxiliary displacement of reservoir oil and its application |
| CN108708700A (en) * | 2018-05-18 | 2018-10-26 | 中国石油天然气股份有限公司 | A kind of method of SAGD technology application effects in improvement heterogeneous reservoir |
| CN109838224A (en) * | 2017-11-28 | 2019-06-04 | 中国石油天然气股份有限公司 | The method for the exploitation super-viscous oil that auxiliary producing well is combined with SAGD |
| CN112065355A (en) * | 2019-12-06 | 2020-12-11 | 中国石油天然气股份有限公司 | Exploitation well pattern and heavy oil reservoir exploitation method of single horizontal well and comb-shaped horizontal well |
| CN112746830A (en) * | 2019-10-30 | 2021-05-04 | 中国石油天然气股份有限公司 | Oil reservoir two-stage branch SAGD reservoir deep expansion oil extraction method |
-
2015
- 2015-05-14 CN CN201520309249.0U patent/CN204609851U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106545321A (en) * | 2015-09-18 | 2017-03-29 | 中国石油化工股份有限公司 | A kind of method of gravity auxiliary displacement of reservoir oil and its application |
| CN106545321B (en) * | 2015-09-18 | 2019-06-07 | 中国石油化工股份有限公司 | A kind of method and its application of the gravity auxiliary displacement of reservoir oil |
| CN109838224A (en) * | 2017-11-28 | 2019-06-04 | 中国石油天然气股份有限公司 | The method for the exploitation super-viscous oil that auxiliary producing well is combined with SAGD |
| CN108708700A (en) * | 2018-05-18 | 2018-10-26 | 中国石油天然气股份有限公司 | A kind of method of SAGD technology application effects in improvement heterogeneous reservoir |
| CN112746830A (en) * | 2019-10-30 | 2021-05-04 | 中国石油天然气股份有限公司 | Oil reservoir two-stage branch SAGD reservoir deep expansion oil extraction method |
| CN112065355A (en) * | 2019-12-06 | 2020-12-11 | 中国石油天然气股份有限公司 | Exploitation well pattern and heavy oil reservoir exploitation method of single horizontal well and comb-shaped horizontal well |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204609851U (en) | Viscous crude SAGD dual horizontal well multiple-branching construction | |
| Wenzhi et al. | Petroleum geological features and exploration prospect of deep marine carbonate rocks in China onshore: A further discussion | |
| CN106437674B (en) | Imitative water injection of horizontal well well pattern adaptation method | |
| CN104989341B (en) | A kind of method for determining low-permeability oil deposit effective displacement injector producer distance | |
| CN104594872A (en) | Method for optimizing fracture conductivity of tight gas-reservoir fractured horizontal well | |
| CN104453877B (en) | A kind of buried point bar of meandering sand body history method for reconstructing in underground | |
| CN103899285A (en) | Similar limit water cut period take-turn water drive method for multi-layer sandstone reservoir | |
| CN104912537B (en) | A kind of well net deployment method of huge thick buried hill fracture reservoir | |
| AU2015358166B2 (en) | Water-preserving mining method for close-distance coal seam group | |
| CN104632157A (en) | Low permeability reservoir equilibrium displacement method | |
| CN105089584A (en) | Method for improving recovery ratio of sealed small fault-block oil reservoir through alternate coupling injection and production of oil-water well | |
| CN104033137B (en) | Oilfield sewage is utilized to improve fault block oil reservoir recovery ratio method | |
| CN106761618A (en) | For the profile control method for determination of amount and its device of water injection well | |
| CN107448197A (en) | A kind of method of marine facies sandstone oil reservoir fluid-channeling channel space development quantitative judge | |
| CN104763466A (en) | Method for detecting active diffusion radius of covered rock separation grouting filling slurry | |
| CN106149677B (en) | High-pressure water-enriched goaf grouting reinforcement means | |
| CN104373097A (en) | Method for increasing middle and deep layer super heavy oil deposit recovery ratio through combination of SAGD and steam flooding | |
| RU2595106C1 (en) | Method of developing deposit with fractured reservoirs | |
| CN204252974U (en) | A kind of horizontal well well structure for the block fractured reservoir exploitation of deep layer | |
| CN105063350B (en) | Method for improving mother liquor recovery rate in in-situ leaching mining | |
| CN106121609A (en) | Destroy the method for interlayer near horizontal well | |
| CN206359956U (en) | Civil engineering bank protection step brick | |
| CN105019873A (en) | Method for selective profile control of low-permeable fracture-type oil reservoir | |
| CN106401549A (en) | Method of building influence plate on horizontal well production effect by crack and well trajectory angle | |
| CN204941490U (en) | A kind of note adopts one pressure cone downcomer rod structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 Termination date: 20210514 |