CN114837632A - Water-controlling oil-gathering mining method - Google Patents
Water-controlling oil-gathering mining method Download PDFInfo
- Publication number
- CN114837632A CN114837632A CN202210391265.3A CN202210391265A CN114837632A CN 114837632 A CN114837632 A CN 114837632A CN 202210391265 A CN202210391265 A CN 202210391265A CN 114837632 A CN114837632 A CN 114837632A
- Authority
- CN
- China
- Prior art keywords
- liquid
- time
- production
- stage
- well
- 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
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000005065 mining Methods 0.000 title claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 116
- 238000004519 manufacturing process Methods 0.000 claims abstract description 56
- 238000000605 extraction Methods 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000011084 recovery Methods 0.000 claims abstract description 12
- 230000008901 benefit Effects 0.000 claims abstract description 10
- 238000012360 testing method Methods 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims abstract description 5
- 238000009825 accumulation Methods 0.000 claims description 5
- 239000003921 oil Substances 0.000 description 39
- 230000005012 migration Effects 0.000 description 5
- 238000013508 migration Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 208000005156 Dehydration Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 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
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
Landscapes
- 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)
- Edible Oils And Fats (AREA)
Abstract
The invention discloses a water-control oil-gathering exploitation method, and belongs to the field of oil exploitation. The method comprises the following steps: 1) stopping the well for a period of time, producing low liquid amount in a high liquid production speed production mode, and stopping the well to start the next period; 2) recording the time of the well closing stage, the time of the liquid extraction stage of the well, the working system of the liquid extraction stage, the water content of the tested produced liquid and the liquid amount of the produced liquid in each time of the cycle; 3) carrying out production test in the next period by changing the combination of the time of the well closing stage, the time of the well producing and liquid extracting stage and the working system of the liquid extracting stage, and recording the water content of the produced liquid and the liquid amount of the produced liquid each time; 4) and calculating economic benefits according to the oil recovery amount, the total time and stage liquid recovery amount of the production period, the oil price and the liquid recovery gathering and transporting cost, and continuously exploring and using a more optimal production strategy according to the mining effect of the comparison test production condition combination. Provides a new exploitation method for reducing invalid liquid exploitation of old oil fields and improving exploitation economic benefits.
Description
Technical Field
The invention relates to the technical field of oil extraction, in particular to a water-control oil-gathering extraction method.
Background
The produced liquid of the oil well is usually a mixture of oil, water and natural gas, but people only aim to produce the oil and the natural gas, and the produced water wastes injected water and stratum energy, increases workload of gathering, transportation and oil-water separation treatment, increases cost and resources in multiple aspects, and increases energy consumption.
Along with the increase of the development time of the oil field, the development efficiency is gradually reduced, the water content of the produced liquid is gradually increased, the energy consumption is gradually increased, the economic benefit is greatly reduced until the problem of closing the well or closing the well is solved, and the control of the energy consumption and the water content of the produced liquid becomes a necessary task. The water content is controlled, meanwhile, the utilization efficiency of stratum energy is improved, energy is saved, consumption is reduced, and conventional development methods and mining equipment are not suitable any more, so that a new adaptive mining method is needed in the aspect of oil extraction in a near economic limit water-cut period.
The oil recovery mode of closing the well and intermittently releasing the sleeve discovered in recent years realizes the great reduction of the water content and the water consumption rate in the development stage close to the economic limit, and can meet the requirements. The problem that most affects the adaptability of the oil recovery method is that the method needs relatively high formation energy, but most development wells close to the economic limit cannot reach enough formation pressure and have economic benefit, so that an optimized manual intervention method is needed.
Disclosure of Invention
The invention aims to provide a water-control oil-gathering mining method to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the water-controlling oil-gathering mining method comprises the following steps:
1) stopping the well for a period of time, producing low liquid amount in a high liquid production speed production mode, and stopping the well to start the next period;
2) recording the time of the well closing stage, the time of the liquid extraction stage of the well, the working system of the liquid extraction stage, the water content of the tested produced liquid and the liquid amount of the produced liquid in each time of the cycle;
3) carrying out production test in the next period by changing the combination of the time of the well closing stage, the time of the well producing and liquid extracting stage and the working system of the liquid extracting stage, and recording the water content of the produced liquid and the liquid amount of the produced liquid each time;
4) and calculating economic benefits according to the oil recovery amount, the total time and stage liquid recovery amount of the production period, the oil price and the liquid recovery gathering and transporting cost, so that the production effect of the combination of the production conditions is compared and tested, and a more optimal production strategy is continuously explored and used.
As a further scheme of the invention: the working system correlation of the liquid extraction stage in the step 2) at least comprises liquid extraction speed, single liquid extraction amount, liquid extraction interval time in a single period and gathering, transportation and treatment of the extracted liquid.
As a still further scheme of the invention: the water content of the produced liquid and the liquid amount of the produced liquid in each time, which are tested in the step 2), need to be tested at least twice.
As a still further scheme of the invention: in the step 4), the production strategy comprises a production scheme and a production system.
As a still further scheme of the invention: the economic benefit in the step 4) is calculated by the following formula:
wherein: II type a Gross profit per unit time averaged over a certain production strategy period;
Q yi the liquid volume of the ith liquid extraction of a certain liquid extraction working system;
f wi average water content of the ith liquid collection of a certain liquid collection working system;
l, the liquid extraction times of a liquid extraction stage of a certain liquid extraction working system;
p, oil price;
A C the lifting gathering and transportation treatment cost of unit liquid volume of a certain liquid collection working system;
t, total time of a certain production strategy cycle.
Compared with the prior art, the invention has the beneficial effects that: the invention can 1 control the water content of the produced liquid; 2. the utilization efficiency of the formation energy is improved; 3. under the condition of controlled low liquid amount, reservoir oil is continuously enriched to a shaft; 4. optimizing a production strategy with higher yield; 5. the invention provides an adaptive development mode and a better method for achieving the purposes of water control exploitation and continuous oil accumulation from an oil reservoir to a shaft.
Drawings
FIG. 1 is a flow chart of a process for controlled water and oil recovery.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1, the water-controlling and oil-gathering mining method, taking a bailing oil extraction machine as an example, includes the following steps:
1) after the well is stopped for a period of time, testing or calculating the position of the liquid level in the shaft; setting a deep liquid column in the bailing shaft within the performance range of the oil extraction system, and continuously bailing for set times according to the set liquid extraction speed; after the bailing is completed, a new round of shut-in and well stewing is started. After the well is stopped for a period of time, only low liquid production amount is produced in a high liquid production speed production mode, the pressure of the shaft and the surrounding oil reservoir is rapidly and greatly reduced, and newly added oil of the shaft and the surrounding oil reservoir is produced, so that less liquid is produced, the oil reservoir force field can be greatly changed, and the water content of the produced liquid is controlled.
And closing the well for a period of time, and then opening the well, and adopting bailing oil extraction equipment to extract the oil-rich fluid at the top in the oil pipe or the sleeve at first each time in a low-liquid-volume extraction manner, so that water-control extraction can be realized. The large-section liquid column can produce larger pressure difference each time in the process of bailing, the oil-water stress environment in the oil reservoir is continuously and greatly changed under the alternate action of well closing and bailing, the feasibility of relative migration of oil and water is improved by utilizing the difference of wettability, density and seepage rules of the oil and water in the oil reservoir, the relative seepage capability of the oil to a shaft is equivalently increased, the relative enrichment of the oil to the shaft is formed, and the continuous enrichment is continuously performed under the alternate action.
2) Recording the time of a well shut-in stage, the total use time of bailing liquid production, the time of completing one bailing liquid production period, the bailing times, the tested water content of each bailing liquid column, the tested liquid quantity of each bailing liquid column and the gathering, transportation and treatment of produced liquid; due to the gravity differentiation effect in the shaft, the water content of each part in the longitudinal direction of the shaft is different, and the water content of the tested produced liquid and the liquid amount of the produced liquid at each time need to be tested at least twice so as to calculate the average water content more accurately.
3) Changing the well closing time, the total bailing liquid-collecting time, the bailing liquid-collecting interval time, the height of a bailing liquid column, the bailing speed and the bailing times of each mining according to a plan, and carrying out multiple tests; and (3) carrying out production test in the next period by changing the combination of the time of the well closing stage, the time of the well producing stage and the working system of the liquid producing stage, and recording the water content of the produced liquid and the liquid amount of the produced liquid every time.
The production strategy scheme is planned, one or more systems in the production strategy are changed, and the production strategy is rapidly optimized by a scientific method.
The production strategy is changed continuously, and the stress change amplitude and change time of oil and water in the oil reservoir are changed; the migration time of oil and water in the oil reservoir and the migration time of the shaft and the reservoir fluid are changed, so that conditions are created for finding a more reasonable production strategy for each well.
4) And calculating economic benefits according to the water content, the total production cycle time, the bailing amount, the bailing times, the oil price and the collected and transported treatment cost of the collected liquid, which are calculated by recording tests, so that the mining effects of different production condition combinations are contrastively tested, and a more optimal production strategy is continuously explored and used.
The production strategy comprises a production scheme and a production system, the production strategy is constantly changed, and the stress change amplitude and change time of oil and water in the oil reservoir are changed; the migration time of oil and water in the oil reservoir and the migration time of the shaft and the reservoir fluid are changed, so that conditions are created for finding a more reasonable production strategy for each well.
In addition, the economic benefit in the step 4) is calculated by the following formula:
wherein: II type a Gross profit per unit time averaged over a certain production strategy period;
Q yi the liquid volume of the ith liquid extraction of a certain liquid extraction working system;
f wi average water content of the ith liquid collection of a certain liquid collection working system;
l, the bailing times of a liquid extraction stage of a certain liquid extraction working system;
p, oil price;
A C the lifting gathering and transportation treatment cost of unit liquid volume of a certain liquid collection working system;
t, total time of a certain production strategy cycle.
It should be noted that the above embodiments are only specific and clear descriptions of technical solutions and technical features of the present application. However, to those skilled in the art, aspects or features that are part of the prior art or common general knowledge are not described in detail in the above embodiments.
In addition, the technical solutions of the present application are not limited to the above-described embodiments, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments may be appropriately combined, so that other embodiments that can be understood by those skilled in the art may be formed.
Claims (5)
1. The water-control oil-gathering mining method is characterized by comprising the following steps: the method comprises the following steps:
1) stopping the well for a period of time, producing low liquid amount in a high liquid production speed production mode, and stopping the well to start the next period;
2) recording the time of the well closing stage, the time of the liquid extraction stage of the well, the working system of the liquid extraction stage, the water content of the tested produced liquid and the liquid amount of the produced liquid in each time of the cycle;
3) carrying out production test in the next period by changing the combination of the time of the well closing stage, the time of the well producing and liquid extracting stage and the working system of the liquid extracting stage, and recording the water content of the produced liquid and the liquid amount of the produced liquid each time;
4) and calculating economic benefits according to the oil recovery amount, the total time and stage liquid recovery amount of the production period, the oil price and the liquid recovery gathering and transporting cost, so that the production effect of the combination of the production conditions is compared and tested, and a more optimal production strategy is continuously explored and used.
2. The water-control oil accumulation production method according to claim 1, wherein: the working system of the liquid extraction stage in the step 2) at least comprises liquid extraction speed, single liquid extraction amount, liquid extraction interval time in a single period and gathering, transportation and treatment of the extracted liquid.
3. The water-control oil accumulation production method according to claim 1, wherein: the water content of the produced liquid and the liquid amount of the produced liquid in each time, which are tested in the step 2), need to be tested at least twice.
4. The water-control oil accumulation production method according to claim 1, wherein: in the step 4), the production strategy comprises a production scheme and a production system.
5. The water-control oil accumulation production method according to claim 1, wherein: the economic benefit in the step 4) is calculated by the following formula:
wherein: II type a Gross profit per unit time averaged over a certain production strategy period;
Q yi the liquid volume of the ith liquid extraction of a certain liquid extraction working system;
f wi average water content of the ith liquid collection of a certain liquid collection working system;
l, the liquid extraction times of a liquid extraction stage of a certain liquid extraction working system;
p, oil price;
A C the lifting gathering and transportation treatment cost of unit liquid volume of a certain liquid collection working system;
t, total time of a certain production strategy cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210391265.3A CN114837632A (en) | 2022-04-14 | 2022-04-14 | Water-controlling oil-gathering mining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210391265.3A CN114837632A (en) | 2022-04-14 | 2022-04-14 | Water-controlling oil-gathering mining method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114837632A true CN114837632A (en) | 2022-08-02 |
Family
ID=82564884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210391265.3A Pending CN114837632A (en) | 2022-04-14 | 2022-04-14 | Water-controlling oil-gathering mining method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114837632A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1912338A (en) * | 2006-08-29 | 2007-02-14 | 大庆油田有限责任公司 | Period injection-production method of waterflooding sandstone oil field |
| CN109522619A (en) * | 2018-10-29 | 2019-03-26 | 中国石油天然气股份有限公司 | Low-permeability oilfield periodic oil extraction method |
| CN110630230A (en) * | 2019-10-08 | 2019-12-31 | 中国石油化工股份有限公司 | Development method for controlling water content of water flooding after ultra-high water content period |
| CN113530503A (en) * | 2021-08-27 | 2021-10-22 | 吕远 | Survey, transfer, adopt layering oil recovery system of integration |
-
2022
- 2022-04-14 CN CN202210391265.3A patent/CN114837632A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1912338A (en) * | 2006-08-29 | 2007-02-14 | 大庆油田有限责任公司 | Period injection-production method of waterflooding sandstone oil field |
| CN109522619A (en) * | 2018-10-29 | 2019-03-26 | 中国石油天然气股份有限公司 | Low-permeability oilfield periodic oil extraction method |
| CN110630230A (en) * | 2019-10-08 | 2019-12-31 | 中国石油化工股份有限公司 | Development method for controlling water content of water flooding after ultra-high water content period |
| CN113530503A (en) * | 2021-08-27 | 2021-10-22 | 吕远 | Survey, transfer, adopt layering oil recovery system of integration |
Non-Patent Citations (3)
| Title |
|---|
| 于长海: "西峰油田特低渗透油藏周期才有机理及应用研究", 《工程科技Ⅰ辑》, 15 September 2018 (2018-09-15), pages 33 - 57 * |
| 孟也;李明波;李相方;何敏侠;蒋明洁;: "低渗油藏低产油井间歇抽油参数优化设计", 断块油气田, no. 02, 25 March 2020 (2020-03-25) * |
| 张继芬, 王立军, 贺凤云, 孙岩: "高含水井关井时机及动态预测", 中国海上油气(工程), no. 01, 28 February 1998 (1998-02-28) * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104234677B (en) | Method for improving condensate recovery ratio of condensate gas reservoir through gas injection vertical displacement | |
| CN102278103B (en) | Method for improving deep super heavy oil reservoir recovery ratio by gravity drainage assisted steam flooding | |
| CN105626036B (en) | A kind of reasonable Liquid output reservoir engineering calculation method of determining oil reservoir | |
| CN101255788B (en) | Thermochemistry auxiliary reinforced steam flooding method | |
| CN101793138B (en) | Hydrocyclone and screw pump combined downhole oil-water separation method | |
| CN109209306B (en) | Horizontal well CO injection for ultra-low permeability tight oil reservoir2Asynchronous throughput energy supplementing method | |
| CN110644957A (en) | Novel method for improving development effect of super heavy oil edge water reservoir | |
| CN107630686B (en) | compact oil energy supplementing method for staggered displacement and imbibition displacement between horizontal well sections | |
| CN110259421B (en) | Fractured compact oil reservoir water injection energy supplementing method | |
| CN106437642A (en) | Injection-production asynchronous mining method for horizontal well of fractured reservoir | |
| CN108915649A (en) | A kind of oil reservoir pressure is stifled to drive technology pattern preferred method | |
| CN113982546A (en) | Evaluation method for carbon dioxide injection profile of horizontal well | |
| CN105134151B (en) | Hot nitrogen energization Viscosity Reduction And Stimulation | |
| CN114293958A (en) | Method for efficiently developing heavy oil reservoir containing bottom water by adopting double horizontal wells | |
| CN109915082A (en) | A kind of device and method for exploiting Offshore Heavy Oil Field oil reservoir | |
| CN110630230B (en) | Development method for controlling water content of water flooding after ultra-high water content period | |
| CN115875030B (en) | Injection quantity design and oil well crack parameter optimization method under pressure driving condition of water injection well | |
| CN114837632A (en) | Water-controlling oil-gathering mining method | |
| CN111827997A (en) | Exploitation method for improving recovery ratio of low-pressure tight oil reservoir | |
| CN115045642A (en) | Well and oil well push-pull linkage thickened oil exploitation method | |
| CN110188996A (en) | Water-drive pool energy consumption-yield-benefit integration characterizing method | |
| CN1208808A (en) | Method and equipment for prodn. of thick oil by injecting detackifier | |
| Yin | Present situation and development trend of oil production technology in unstable waterflooding | |
| RU2079639C1 (en) | Method of development of oil-gas-condensate deposits | |
| CN111520117B (en) | Bottom water injection method and verification suitable for shallow layer horizontal seam oil reservoir |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |