CN100467826C - Method for extracting residue oil by injecting profile control agent to norizontal well for blocking water injection path of oil reservoir - Google Patents
Method for extracting residue oil by injecting profile control agent to norizontal well for blocking water injection path of oil reservoir Download PDFInfo
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- CN100467826C CN100467826C CNB2005100101910A CN200510010191A CN100467826C CN 100467826 C CN100467826 C CN 100467826C CN B2005100101910 A CNB2005100101910 A CN B2005100101910A CN 200510010191 A CN200510010191 A CN 200510010191A CN 100467826 C CN100467826 C CN 100467826C
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- well
- horizontal well
- profile control
- control agent
- oil
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 238000002347 injection Methods 0.000 title claims abstract description 31
- 239000007924 injection Substances 0.000 title claims abstract description 31
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000000903 blocking effect Effects 0.000 title 1
- 238000000605 extraction Methods 0.000 claims description 9
- 241000184339 Nemophila maculata Species 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 5
- 210000003296 saliva Anatomy 0.000 claims description 4
- 238000005553 drilling Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000003491 array Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 54
- 239000012530 fluid Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 241000220317 Rosa Species 0.000 description 1
- GMSWRMUHJLKEIL-UHFFFAOYSA-N azane;ethene Chemical compound N.C=C GMSWRMUHJLKEIL-UHFFFAOYSA-N 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/30—Specific pattern of wells, e.g. optimising the spacing of wells
- E21B43/305—Specific pattern of wells, e.g. optimising the spacing of wells comprising at least one inclined or horizontal well
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Railway Tracks (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
This invention relates to a method for exploiting residual oil utilizing horizontal well to inject profile control agent to block the water channel of oil layers, which utilizes a horizontal wall group vertical to the master flow-line direction to fill in the profile control agent to stop the water-injection channel in the filling and exploiting arrays of a plane oil geologic structure. After the original water channel is filled with the horizontal profile control agent, the water is forced to change its direction to flush the residual oil to be exploited by lower reach production wells.
Description
Technical field
The invention belongs to oil exploitation, particularly utilize the method for horizontal well injecting profile control agent reservoir plugging water injection path exploitation remaining oil.
Background technology
Daqing oil field is through exploitation for many years, and each oil reservoir stagnant area exists a large amount of remaining oils to exploit.At present, horizontal well drilling technology is ripe, if with horizontal well directly recover the oil (or water filling), because the difference of horizontal well horizontal segment permeability, make several meters long height infiltration section production fluid (moisture higher) but the narrow flowing space of occupancy level well just causes hypotonic section higher production fluid of oil-containing to be difficult to enter horizontal well.Therefore the direct mode of recovering the oil of horizontal well still is difficult to exploit remaining oil, and this also is the key factor that the direct oil recovery of horizontal well can't be promoted.
Summary of the invention
The method of horizontal well injecting profile control agent reservoir plugging water injection path exploitation remaining oil of the present invention is intended to overcome the deficiencies in the prior art.According to the homogeneous pay Remaining Oil Distribution, dream up the method for utilizing horizontal well profile control shutoff water injection path to exploit remaining oil.This method is come the shutoff waterflood path by inject the mode of profile control agent at the water injection path place perpendicular to the horizontal well group of main stream line, makes injection water be forced to change the remaining oil that flow direction washes away the stagnant area, reaches the purpose that water blockoff recovers the oil.
The technical scheme that method adopted of horizontal well injecting profile control agent reservoir plugging water injection path of the present invention exploitation remaining oil is: at the notes of oil reservoir plane geologic structure, adopt in the well array, utilization is injected profile control agent perpendicular to the horizontal well group of main flow waterline direction, the blocking-up waterflood path.
As a further improvement on the present invention, utilize the oil production pattern of five-spot layout, between well array, bore horizontal well group perpendicular to the beam waterline, and by the waterflood path between this well group injection profile control agent blocking-up remaining oil block.Vertical well array with this horizontal well one side changes row of water injector into then, and the vertical well array of opposite side changes the oil recovery well array into.Former water injection path by horizontal profile control well shutoff after, current are forced to change direction and wash away remaining oil, and by downstream producing well extraction.
Further improve as of the present invention,, also can utilize horizontal profile control injection-production well group to exploit remaining oil according to the regularity of distribution of different oil reservoirs.In horizontal well group, with horizontal well a inject profile control agent, horizontal well b as water injection well, horizontal well c as producing well, by the water filling of b well, the profile control and water plugging of a well, the oil recovery of c well, the remaining oil of a Jing Chu is flushed to the place's extraction of c well; Inject by horizontal well c then that profile control agent, horizontal well a change water injection well into, horizontal well d changes the remaining oil that producing well is exploited c Jing Chu into; By alternately exchanging of each horizontal well function, with the remaining oil extraction at every saliva horizontal well place.
Described profile control agent is: the HMW organic polymer, and as the high-molecular-weight poly third ethene ammonium.
The method of horizontal well injecting profile control agent reservoir plugging water injection path of the present invention exploitation remaining oil is reasonable in design, small investment, high efficiency.
Description of drawings
Fig. 1 is a five-spot layout oil production pattern schematic diagram.
Fig. 2 is the horizontal profile control well group exploitation five-spot remaining oil schematic diagram of the method for horizontal well injecting profile control agent reservoir plugging water injection path exploitation remaining oil of the present invention.
Fig. 3 is the horizontal profile control injection-production well group exploitation remaining oil schematic diagram of the method for horizontal well injecting profile control agent reservoir plugging water injection path exploitation remaining oil of the present invention.
The specific embodiment
Embodiment 1
In the homogeneous pay with the five-spot well spacing, it is the strongest to annotate, adopt near the well current scour, the most weak from oil-water well current scour at a distance.Therefore the oil reservoir remaining oil enrichment is at shadow positions shown in Figure 1 place, and injection water is pressed water injection path shown in the arrow and flowed, and the stagnant area residue wet goods of dash area is difficult to be washed away.If directly utilize the oil of horizontal wells remaining oil block, the production fluid that enters horizontal well so still comes liquid for sprue comes liquid or high infiltration section, and shown in Figure 1, the residue wet goods still can't be exploited, and moisturely also can't descend.Therefore, can not directly recover the oil with horizontal well.In this respect, just there is the example of failure in Daqing oil field six factories of recovering the oil, and six factories once utilized horizontal well directly to recover the oil, and after the high flooded area of result waterborne come, the moisture straight line of production fluid rose, and finally makes this mouthful well become disused well.
At present, the length of horizontal well horizontal segment can reach 1000 meters.The present invention is the oil production pattern that utilizes the five-spot layout, remaining oil enrichment block horizontal well drilling group between well array, and by this horizontal well injection profile control agent (5 meters of shallow profile control radius, but 10 meters thick layer oil of shutoff just) water injection path between blocking-up remaining oil block, vertical well array with horizontal profile control well one side changes water injection well into then, the vertical well array of opposite side changes the oil recovery well array into, as shown in Figure 2.Water injection path will be stopped up by profile control agent, and injecting water can only flow by direction shown in Fig. 2 arrow, and its flow results is that the crude oil in the remaining oil enrichment district is flushed to the producing well place, thereby reaches the purpose that water blockoff recovers the oil.
Embodiment 2
As same inventive concept of the present invention,, also can utilize horizontal profile control injection-production well group to exploit remaining oil, as shown in Figure 3 according to the regularity of distribution of different oil reservoirs.In horizontal well group, with horizontal well a inject profile control agent, horizontal well b as water injection well, horizontal well c as producing well, with the remaining oil extraction of a Jing Chu.And then horizontal well c injected profile control agent, horizontal well a change water injection well into, horizontal well d changes producing well into, with the remaining oil extraction of c Jing Chu.By alternately exchanging of each horizontal well function, with the remaining oil extraction at every saliva horizontal well place.
Claims (3)
1, the method for horizontal well injecting profile control agent reservoir plugging water injection path exploitation remaining oil, it is characterized in that in oil reservoir plane geologic structure notes, adopt in the well array, utilize horizontal well group to inject profile control agent, blocking-up waterflood path and macropore perpendicular to main flow waterline direction.
2, the method of horizontal well injecting profile control agent reservoir plugging water injection path exploitation remaining oil as claimed in claim 1, it is characterized in that in the five-spot flooding pattern, horizontal well drilling group between enrichment remaining oil block, this horizontal well prescription is to perpendicular to main flow waterline direction, and the adjustment Five-point method pattern is a line pattern, make every saliva horizontal well one side be water injection well, opposite side is producing well, then by the waterflood path between this horizontal well group injection profile control agent blocking-up remaining oil block, make and inject that water is forced to change flow direction and flow to the remaining oil direction, thereby remaining oil is washed into the downstream, utilizes the downstream well these remaining oil extraction.
3, the method for horizontal well injecting profile control agent reservoir plugging water injection path exploitation remaining oil as claimed in claim 1, it is characterized in that in horizontal well group, with horizontal well a inject profile control agent, horizontal well b as water injection well, horizontal well c as producing well, by the water filling of b well, the profile control and water plugging of a well, the oil recovery of c well, the remaining oil of a Jing Chu is flushed to the place's extraction of c well; Inject by horizontal well c then that profile control agent, horizontal well a change water injection well into, horizontal well d changes the remaining oil that producing well is exploited c Jing Chu into; By alternately exchanging of each horizontal well function, with the remaining oil extraction at every saliva horizontal well place.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100101910A CN100467826C (en) | 2005-07-14 | 2005-07-14 | Method for extracting residue oil by injecting profile control agent to norizontal well for blocking water injection path of oil reservoir |
| PCT/CN2006/001678 WO2007006239A1 (en) | 2005-07-14 | 2006-07-14 | An extracting remaining oil method using horizontal wells to inject profile control agent for blocking water injection channel of oil reservoir |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100101910A CN100467826C (en) | 2005-07-14 | 2005-07-14 | Method for extracting residue oil by injecting profile control agent to norizontal well for blocking water injection path of oil reservoir |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1743641A CN1743641A (en) | 2006-03-08 |
| CN100467826C true CN100467826C (en) | 2009-03-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100101910A Expired - Fee Related CN100467826C (en) | 2005-07-14 | 2005-07-14 | Method for extracting residue oil by injecting profile control agent to norizontal well for blocking water injection path of oil reservoir |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100467826C (en) |
| WO (1) | WO2007006239A1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364041B (en) * | 2011-10-26 | 2014-03-26 | 王胜存 | Oil extraction method for establishing oil permeable water stop sieve by filling fusheng sand in horizontal well fracture |
| US8910712B2 (en) * | 2011-10-31 | 2014-12-16 | Chevron U.S.A. Inc. | System and method for converting class II hydrate reservoirs |
| CN106401480A (en) * | 2016-11-29 | 2017-02-15 | 中国石油天然气股份有限公司 | Horizontal punching and profile control plugging combined process |
| CN106894800B (en) * | 2017-02-23 | 2019-05-21 | 中国海洋石油集团有限公司 | A kind of profile control well selection decision-making technique suitable for Offshore Heavy Oil Field oil reservoir |
| CN109162685B (en) * | 2018-07-25 | 2021-11-30 | 中国石油天然气股份有限公司 | Mining method of top water oil sand |
| CN109339753A (en) * | 2018-09-14 | 2019-02-15 | 山东石大油田技术服务股份有限公司 | A method of well pattern is remolded using directional sidetracking adjustment water injection well target position |
| CN110485974A (en) * | 2019-04-19 | 2019-11-22 | 中国石油天然气股份有限公司 | A kind of Profile Control in Injection Well method |
| CN113309505B (en) * | 2020-02-26 | 2022-10-04 | 中国石油化工股份有限公司 | Weathered crust karst reservoir water injection well flow passage adjusting method |
| CN113309500B (en) * | 2020-02-26 | 2022-10-04 | 中国石油化工股份有限公司 | Tahe carbonate reservoir water injection well group flow channel adjusting method |
| CN114592837B (en) * | 2020-12-04 | 2024-04-30 | 中国石油天然气股份有限公司 | Injection and production adjustment method for horizontal well row shape opposite to injection and production well pattern in high water content period |
| CN115807645A (en) * | 2021-09-13 | 2023-03-17 | 中国石油天然气股份有限公司 | Water plugging method for oil-water well |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4129182A (en) * | 1977-02-28 | 1978-12-12 | Standard Oil Company (Indiana) | Miscible drive in heterogeneous reservoirs |
| US4299284A (en) * | 1979-12-05 | 1981-11-10 | Texaco Inc. | High sweep efficiency enhanced oil recovery process |
| US5320170A (en) * | 1992-07-30 | 1994-06-14 | Texaco Inc. | Oil recovery process employing horizontal and vertical wells in a modified inverted 5-spot pattern |
-
2005
- 2005-07-14 CN CNB2005100101910A patent/CN100467826C/en not_active Expired - Fee Related
-
2006
- 2006-07-14 WO PCT/CN2006/001678 patent/WO2007006239A1/en active Application Filing
Non-Patent Citations (8)
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Also Published As
| Publication number | Publication date |
|---|---|
| CN1743641A (en) | 2006-03-08 |
| WO2007006239A1 (en) | 2007-01-18 |
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Granted publication date: 20090311 Termination date: 20130714 |