CN103790558B - Demixing injection-production interlock coupling process method - Google Patents
Demixing injection-production interlock coupling process method Download PDFInfo
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Abstract
The invention provides a kind of demixing injection-production interlock coupling process method, this demixing injection-production interlock coupling process method comprises: step 1, chooses water injection well and producing well; Step 2, according to the oil reservoir situation that this water injection well and this producing well pass, divides reservoir layer position; Step 3, when according to this oil reservoir layer position, when being judged as the layer of energy stabilization, stable yield, water filling, while exploitation; Step 4, gathers oil reservoir development index; And step 5, when according to this oil reservoir development index, when judging to need to change oil production, regulate oil production equipment to control oil production and to regulate.This demixing injection-production interlock coupling process method effectively can overcome seperated layer water injection, oil production by layer singles solely struggle against the defect existed, stratum UNICOM corresponding situation, water status etc. can be understood by monitoring regulation and control, for oil reservoir research provides strong technical support, develop oil reservoir each layer of position efficiently.
Description
Technical field
The present invention relates to oil-field flooding and oil production technology technology, particularly relate to a kind of demixing injection-production interlock coupling process method.
Background technology
Demixing injection-production technology is the important development approach of oil reservoir with multiple series of strata, and traditional method is well water filling, well recovery, and seperated layer water injection, oil production by layer are implemented all separately, and seperated layer water injection and oil production by layer do not build close links.As patent: CN201020280845.8 selective flow string can realize when motionless full well flow string, complete to look in water blockoff layering or close layer and produce or selectively change producing zone position, and this selective flow string simplicity of design, operation are reliable, cost of production and labour intensity low.The method of adjustment of patent CN200710144495.5 oil field injection and extraction system in ultra-high water-containing period: adjustment is optimized to injection and extraction system, the end hole of the row of adopting between note between metaideophone is adopted to form the injection-production method of horizontal linear injection pattern, or metaideophone corner well forms the injection-production method of five-spot areal well pattern, or the end hole of metaideophone oil recovery well array forms the injection-production method of vertical linear injection pattern, or interval metaideophone corner well forms the injection-production method of block water injection unit, or the end hole of interval metaideophone oil recovery well array forms longitudinally two row's water injection wells and presss from both sides three mining oil wells, the injection-production method of the ranks shape injection pattern adopted between middle ware note, it is between 160 ~ 190m that well spacing adjusts to average distance.Patent CN200510043317.4 oil well: after conventional waterflooding technique shutoff high permeability zone, then take to inject bubble Lei Xier and maybe can improve the method for the expansion-resisting agent of earth formation, with less permeable layer water-taking efficiency in improving.Patented technology CN200910083119.9: be a kind of method improving water drive recovery factor of thick positive rhythm reservoir, is specifically related to a kind of horizontal well gel deep rock tunneling and improves positive rhythm thick formation reservoir water drive method; At the high permeability zone horizontal well drilling of positive rhythm thick formation, inject gel by horizontal well to high permeability zone, in high permeability zone, set up the checkdam consistent with high permeability zone height.These technology are all only for water injection well or producing well, and its major defect existed is: seperated layer water injection, oil production by layer design separately, implement, and correlation is poor; Seperated layer water injection and oil production by layer, note adopts correspondence difference; Be unfavorable for understanding oil reservoir situation; Be unfavorable for balanced exploitation; Be unfavorable for supplementary stratum energy, affect oil recovery.We have invented a kind of new demixing injection-production interlock coupling process method for this reason, solve above technical problem.
Summary of the invention
The object of this invention is to provide one and can implement high efficiency regulatory the Technology of Layered Water Injection, the demixing injection-production interlock coupling process method of selective layering oil production technology technology can be implemented.
Object of the present invention realizes by following technical measures: demixing injection-production interlock coupling process method, and this demixing injection-production interlock coupling process method comprises: step 1, chooses water injection well and producing well; Step 2, according to the oil reservoir situation that this water injection well and this producing well pass, divides reservoir layer position; Step 3, when according to this oil reservoir layer position, when being judged as the layer of energy stabilization, stable yield, water filling, while exploitation; Step 4, gathers oil reservoir development index; And step 5, when according to this oil reservoir development index, when judging to need to change oil production, regulate oil production equipment to control oil production and to regulate.
Object of the present invention also realizes by following technical measures:
This water injection well and this producing well are each passed through one or more oil recovery, water filling layer position, this one or more oil recovery, water filling layer position and this water injection well and the mutual UNICOM of this producing well.
In step 3, when according to this oil reservoir layer position, be judged as that height oozes, High water cut, ultra-high water-containing layer time, carry out stopping production, stopping note.
In step 3, when according to this oil reservoir layer position, be judged as energy shortage, yield poorly low pressure layer time, water filling builds the pressure makeup energy.
In step 3, when according to this oil reservoir layer position, when being judged as the layer that energy is sufficient, pressure is high, output is high, pressure release exploitation is carried out.
This oil reservoir development index comprises oilfield injection-production ratio, the strata pressure of oil reservoir, oil reservoir UNICOM situation and reservoir characteristics parameter.
In steps of 5, when according to this oil reservoir development index, when judging to need to change water injection rate, regulate the water volume control device of reservoir layer position changing water injection rate.
In steps of 5, when according to this oil reservoir development index, when judging to need to change water drive direction, change the water filling situation of this water injection well, change flow field state.
Demixing injection-production interlock coupling process method in the present invention, the result studied according to oil reservoir and oil reservoir are to demixing injection-production technique requirement, seperated layer water injection and layering oil production technology are carried out the method for integral process design and implementation, really realize multilayer to replace note and adopt coupling linkage, change flow location form, slow down water logging speed, reduce longitudinal interlayer interference, improve plane water drive swept volume.Demixing injection-production interlock coupling process method key realizes every development parameters by demixing injection-production tubing string or demixing injection-production regulation and control tubing string: water injection pressure, water injection rate, oil production, formation pressure etc., grasp oil reservoir situation to greatest extent, expand and inject water swept volume, realize stratum energy to supplement, improve reservoir withdrawal, improve oil recovery.The present invention compared with prior art tool has the following advantages: 1, realize reservoir water and to build the pressure raising stratum energy; 2, pressure release exploitation is realized; 3, the connection situation of the corresponding series of strata of oil-water well is understood; 4, reservoir water status is understood; 5, control implanted layer interlayer difference, realize interlayer and inject balanced; 6, production control interlayer difference, realizes producing zone balanced production; 7, change flow location form, improve note and adopt corresponding rate; 8, improve effective water injection rate, reduce inefficient water injection amount; 9, realize multilayer to replace note and adopt interlock, improve recovery ratio.Demixing injection-production interlock coupling process method in the present invention passes through integrated design, at any time according to the change of oil reservoir situation, change the mode of production simultaneously thus realize multilayer and replace note and adopt coupling linkage, change flow location form, slow down water logging speed, reduce longitudinal interlayer interference, improve plane water drive swept volume.
Accompanying drawing explanation
Fig. 1 is the flow chart of a specific embodiment of demixing injection-production of the present invention interlock coupling process method.
Detailed description of the invention
For making above and other object of the present invention, feature and advantage can become apparent, cited below particularly go out preferred embodiment, and coordinate institute's accompanying drawings, be described in detail below.
As shown in Figure 1, Fig. 1 is the flow chart of a specific embodiment of demixing injection-production of the present invention interlock coupling process method.
In step 101, choose water injection well and producing well.In one embodiment, according to oil reservoir scheme, beat water injection well and producing well or select the water injection well developed and producing well.Water injection well and producing well are each passed through one or more oil recovery, water filling layer position, and each layer of position may be all mutual UNICOM with water injection well and producing well.Flow process enters into step 102.
In step 102, according to the oil reservoir situation that water injection well and producing well pass, reservoir layer position is divided.Distinguish for the reservoir layer position being in different development phases or different physical property, generally can be divided into following four kinds of situations: to ooze for height, High water cut, ultra-high water-containing layer, do not possess the layer of economic worth, flow process enters into step 103; For energy shortage, the low pressure layer that yields poorly, flow process enters into step 104; For the layer of energy stabilization, stable yield, flow process enters into step 105; The layer sufficient for energy, pressure is high, output is high, flow process enters into step 106.
In step 103, height to be oozed, High water cut, ultra-high water-containing layer, do not possess the layer of economic worth, carry out stopping production, stopping note.Flow process enters into step 107.
In step 104, water filling is carried out for energy shortage, the low pressure layer that yields poorly and to build the pressure makeup energy, improve strata pressure, and do not produce, reach after certain requirement until energy and exploit again.Flow process enters into step 107.
In step 105, for carried out one side water filling of energy stabilization, stable yield, exploitation, realizes balanced production.Flow process enters into step 107.
In step 106, the layer sufficient for energy, pressure is high, output is high, carries out pressure release exploitation.Flow process enters into step 107.
In step 107, gather oil reservoir development index.After same working system a period of time, or according to water injection well, the manufacturing parameter test of producing well, the situation of change of reservoir pressure can be recognized, oil reservoir UNICOM situation, reservoir characteristics parameter (oil-containing, moisture etc.), and oilfield injection-production ratio, the strata pressure of oil reservoir, oil reservoir UNICOM situation, reservoir characteristics parameter (oil-containing, moisture etc.) etc., along with the progress of oil reservoir development, these development index can constantly adjust, at this moment water injection rate and oil production will be adjusted at any time, simultaneously in order to better reach oil-water displacement efficiency, water drive direction (situation of note adopted by especially many wells) may be changed, oil is driven to producing well to greatest extent.When according to oil reservoir development index, when judging to need adjustment water injection rate, flow process enters into step 108.When according to oil reservoir development index, when judging to need adjustment oil production, flow process enters into step 109.When according to oil reservoir development index, when judging to need adjustment to change water drive direction, flow process enters into step 110.
In step 108, changing water injection rate, changing water injection rate by regulating the water volume control device of corresponding reservoir layer position;
In step 109, change oil production, can control oil production by regulating oil production equipment and regulate.
In step 110, change water drive direction, adopt two notes, for one and adopt three notes, two and adopt two notes, two and adopt many well groups such as three notes and close the situation noted and adopt, the water filling situation that can change water injection well (refers to the situation described by step 103-106,4 kinds of situations can be changed mutually), change flow field state.
Claims (7)
1. demixing injection-production interlock coupling process method, is characterized in that, this demixing injection-production interlock coupling process method comprises:
Step 1, chooses water injection well and producing well;
Step 2, according to the oil reservoir situation that this water injection well and this producing well pass, divides reservoir layer position;
Step 3, when according to this oil reservoir layer position, when being judged as the layer of energy stabilization, stable yield, water filling, while exploitation;
Step 4, gathers oil reservoir development index; And
Step 5, when according to this oil reservoir development index, when judging to need to change oil production, regulates oil production equipment to control oil production and to regulate;
This water injection well and this producing well are each passed through one or more oil recovery, water filling layer position, this one or more oil recovery, water filling layer position and this water injection well and the mutual UNICOM of this producing well.
2. demixing injection-production according to claim 1 interlock coupling process method, is characterized in that, in step 3, when according to this oil reservoir layer position, be judged as that height oozes, High water cut, ultra-high water-containing layer time, carry out stopping production, stopping note.
3. demixing injection-production according to claim 1 interlock coupling process method, is characterized in that, in step 3, when according to this oil reservoir layer position, be judged as energy shortage, yield poorly low pressure layer time, water filling builds the pressure makeup energy.
4. demixing injection-production interlock coupling process method according to claim 1, is characterized in that, in step 3, when according to this oil reservoir layer position, when being judged as the layer that energy is sufficient, pressure is high, output is high, carries out pressure release exploitation.
5. demixing injection-production interlock coupling process method according to claim 1, it is characterized in that, this oil reservoir development index comprises oilfield injection-production ratio, the strata pressure of oil reservoir, oil reservoir UNICOM situation and reservoir characteristics parameter.
6. demixing injection-production according to claim 1 interlock coupling process method, is characterized in that, in steps of 5, when according to this oil reservoir development index, when judging to need to change water injection rate, regulates the water volume control device of reservoir layer position changing water injection rate.
7. demixing injection-production interlock coupling process method according to claim 1, is characterized in that, in steps of 5, when according to this oil reservoir development index, when judging to need to change water drive direction, changes the water filling situation of this water injection well, changes flow field state.
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| CN104234673B (en) * | 2014-07-30 | 2015-12-30 | 中国石油大学(华东) | Consider the stratified reservoir multi-zone flow regulating method of interlayer interference |
| CN106801596A (en) * | 2015-11-26 | 2017-06-06 | 中国石油化工股份有限公司 | The new method that marine water injection well water filling interval is divided |
| CN107869332A (en) * | 2016-09-22 | 2018-04-03 | 中国石油化工股份有限公司 | A kind of oil well monitor control system and method |
| CN108316898B (en) * | 2018-01-04 | 2021-01-26 | 中国石油天然气股份有限公司 | Oil field horizontal well segmented free corresponding control oil extraction process |
| CN111088969B (en) * | 2018-10-23 | 2022-03-29 | 中国石油天然气股份有限公司 | Method and device for determining separate injection scheme of water injection well and storage medium |
| CN111749657B (en) * | 2019-03-29 | 2022-06-03 | 中国石油天然气股份有限公司 | Well pattern layered mining method and device |
| CN112112617B (en) * | 2019-06-04 | 2024-03-01 | 中国石油化工股份有限公司 | Method for developing thick-layer sand conglomerate oil reservoir by ectopic energy storage fracturing |
| CN110872942B (en) * | 2019-10-24 | 2021-09-28 | 中国石油化工股份有限公司 | Research method for contribution of different acting forces to recovery ratio in oil reservoir injection-production coupling mode |
| CN113969770B (en) * | 2020-07-23 | 2024-07-16 | 中国石油化工股份有限公司 | High-pressure energy storage-body-to-body release type volumetric water drive development method for side water reservoir water body |
| CN113464098B (en) * | 2021-07-01 | 2023-07-04 | 中国科学院武汉岩土力学研究所 | CO (carbon monoxide) 2 Geological storage method and system thereof |
| CN117744897B (en) * | 2024-02-21 | 2024-05-10 | 中国石油大学(华东) | Layered injection and production interval combination and interval injection and production allocation integrated optimization method |
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