CN108825190B - Method for determining steam huff-puff turnaround time of heavy oil reservoir - Google Patents
Method for determining steam huff-puff turnaround time of heavy oil reservoir Download PDFInfo
- Publication number
- CN108825190B CN108825190B CN201810591873.2A CN201810591873A CN108825190B CN 108825190 B CN108825190 B CN 108825190B CN 201810591873 A CN201810591873 A CN 201810591873A CN 108825190 B CN108825190 B CN 108825190B
- Authority
- CN
- China
- Prior art keywords
- steam
- puff
- period
- daily
- value
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000000295 fuel oil Substances 0.000 title claims abstract description 21
- 239000003921 oil Substances 0.000 claims abstract description 75
- 238000004519 manufacturing process Methods 0.000 claims abstract description 48
- 238000011234 economic evaluation Methods 0.000 claims abstract description 9
- 238000004088 simulation Methods 0.000 claims abstract description 9
- 238000012546 transfer Methods 0.000 claims abstract description 6
- 238000011161 development Methods 0.000 claims description 15
- 230000001186 cumulative effect Effects 0.000 claims description 13
- 230000000638 stimulation Effects 0.000 claims description 10
- 238000012067 mathematical method Methods 0.000 claims description 8
- 238000012887 quadratic function Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 3
- 230000001373 regressive effect Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000005457 optimization Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000007306 turnover Effects 0.000 description 3
- 238000010793 Steam injection (oil industry) Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000010795 Steam Flooding Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect 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
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
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)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The invention provides a method for determining a steam huff-puff turnaround time of a heavy oil reservoir, which comprises the following steps: step 1, simulating and predicting the oil production of a steam huff-puff period by utilizing an oil reservoir numerical value; step 2, calculating the daily net present value in each steam throughout period by using a dynamic economic evaluation method; step 3, calculating the accumulated net current value in each period of steam throughput; step 4, calculating the accumulated net present values of all steam throughput periods; step 5, calculating the accumulated net current values of all periods of steam huff and puff under oil production on different revolution days; and 6, calculating a relation curve between the daily oil production and the accumulated net present value before different transfer cycles, and seeking the optimal daily oil production of the transfer cycles under the maximum accumulated net present value as the transfer cycle time by using a mathematical optimization method. The method is based on oil reservoir numerical simulation and combined with dynamic economic evaluation, and oil production in a steam huff-puff turnaround day is found out under the condition of maximizing economic benefit with the net current financial value as a target, so that steam huff-puff turnaround work is carried out economically and efficiently, and oil field production practice is guided.
Description
Technical Field
The invention relates to the technical field of oilfield development, in particular to a method for determining a steam huff-puff turnaround time of a heavy oil reservoir.
Background
Since fifteen, the victory oil field is technically restricted, and forms development technologies such as thickened oil encryption huff and puff, extra-ultra thickened oil, sensitive thickened oil, thermochemical huff and puff, thin layer, bottom water, shallow-layer ultra thickened oil and the like in a matching way, so that the excavation and submergence of old areas and the investment of new areas are continuously enhanced, and the large increase of the yield of the victory thickened oil is realized. By the end of 2015, the heavy oil yield of the victory oil field is up to 525 ten thousand tons, which accounts for 19.3 percent of the total yield of the victory oil field, wherein the steam throughput oil yield is 499.1 ten thousand tons, which accounts for 95.0 percent of the total yield, and the steam flooding yield is 26.1 ten thousand tons, which accounts for 5.0 percent.
With the increase of production rounds, the steam huff and puff effect gradually worsens, and at the end of 2015, the number of high-round huff and puff wells which surpass 6 cycles and above in the steam huff and puff wells in the oil field reaches 1400, which accounts for 31.3 percent of the total number of wells. After high-round huff and puff, the oil production of a single well in a period is reduced to be less than 1200t, the oil-gas ratio of the period is reduced to be about 0.6, the water content of the period is gradually increased to be more than 90%, and the period effect is gradually deteriorated. The whole heavy oil reservoir is in the stages of high ethics, high water content, low yield, low oil-gas ratio and medium-high extraction degree, and compared with water flooding development, the heavy oil thermal recovery single well has relatively high productivity, but measures such as turnover, steam injection and the like have high cost and high operation cost. Under the current low oil price condition, further advanced research is needed, the development cost of the thickened oil is reduced, the development quality and the benefit of the thickened oil are improved, and the upgrading and efficiency increasing work of the thickened oil is led to be upgraded.
However, under the conditions of low oil price and rising cost, the technical limits and the applicable conditions of various steam huff-puff upgrading and efficiency increasing strategies must be formed to further reduce the development cost and improve the development quality and benefit. The determination of reasonable steam throughput and turnover time is one of effective ways for realizing cost reduction and efficiency improvement, but the work load of the turnover time determination is large because the daily oil production of the statistical work statistics period is utilized. Therefore, the optimization research of the steam huff and puff turnaround time is necessary to be developed, and a foundation is laid for the upgrading and efficiency increasing work of the steam huff and puff. Therefore, the invention provides a method for determining the steam huff-puff development turnaround time of the heavy oil reservoir, and solves the technical problems.
Disclosure of Invention
The invention aims to provide a method for determining a steam huff-puff turnaround time machine of a heavy oil reservoir, which is used for seeking steam huff-puff turnaround time machine for producing oil on a day of steam huff-puff optimum turnaround with economic benefit maximization by taking a financial net present value as a target based on numerical reservoir simulation and combining dynamic economic evaluation and applying a mathematical method.
The object of the invention can be achieved by the following technical measures: the method for determining the steam huff-puff transfer time machine of the heavy oil reservoir comprises the following steps: step 1, simulating and predicting the daily oil yield in each period of steam stimulation by using an oil reservoir numerical value; step 2, calculating the daily net present value of each period of the steam throughput by using a dynamic economic evaluation method; step 3, calculating the accumulated net current value in each period of steam throughput; step 4, calculating the accumulated net present values of all steam throughput periods; step 5, calculating the accumulated net current values of all steam huff and puff periods under oil production on different revolution days; and 6, drawing a relation curve of the accumulated net present values under oil production on different days, and seeking the steam huff and puff turnaround time.
The object of the invention can also be achieved by the following technical measures:
in step 1, a numerical reservoir simulation method is used for predicting steam huff and puff development effect and counting daily oil production of each period.
In step 1, it is assumed that the oil production is a certain value the next day before each steam throughput revolution.
In step 2, a dynamic economic evaluation method is used for calculating the daily net present value in the period according to the predicted daily oil production data of the period.
In step 3, the net present value of the daily degree in the period is accumulated, and the accumulated net present value in the period is obtained.
In step 3, the calculated cumulative net present value over the period should be greater than 0.
In step 4, the cumulative net present value of cycles is accumulated for all cycles greater than 0.
In step 5, repeating the steps 1-4, and calculating the accumulated net current values of all periods of steam stimulation under oil production on different turn-round days; and then step 6.
In step 6, the oil production and corresponding cumulative net present value scatter data for different revolutions per day are plotted in a data table.
In step 6, a mathematical method is adopted to perform unitary quadratic function regression on the scattered point data, and a function maximum value is obtained through the mathematical method, wherein the daily oil production value corresponding to the maximum value is a reasonable turnaround opportunity.
In step 6, the net present value NPV and the daily oil Q are accumulatedoHas the following functional relation:
NPV＝aQo 2+bQo+c
in the formula (I), the compound is shown in the specification,
NPV-cumulative net present value;
Qo-daily oil production;
a. b, c-coefficients of the regressive unitary quadratic function.
According to the method for determining the steam huff and puff turnaround time of the heavy oil reservoir, the steam huff and puff development effect is predicted by establishing a thermal recovery numerical simulation model of a typical oil reservoir, the accumulated net present value in the steam huff and puff development is calculated according to a financial net present value calculation method by considering the time value, and the optimal oil production in the turnaround day is calculated by using a mathematical method and taking the accumulated net present value as a mathematical target to maximize, so that the steam huff and puff turnaround work is carried out economically and efficiently, and the oil field production practice is guided. The invention relates to a method for determining a reasonable steam throughput turnaround time of a heavy oil reservoir by fully considering technical and economic factors.
Drawings
Fig. 1 is a flowchart of an embodiment of a method for determining a steam throughput turnaround time of a heavy oil reservoir according to the present invention.
FIG. 2 is a schematic graph of the determination of the net present daily value and the cumulative net present value for cycle 1 and cycle 2 in accordance with an embodiment of the present invention;
FIG. 3 is a graph of the oil production per revolution and the cumulative net present value for the best oil production per revolution according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
As shown in fig. 1, fig. 1 is a flowchart of a determination method of a steam throughput turnaround time of a heavy oil reservoir.
In step 101, a numerical simulation conceptual model of a typical reservoir type is established using reservoir numerical simulation software. And predicting the steam huff and puff development effect by using an oil reservoir numerical simulation method, and counting the daily oil production of each period. It is assumed that the next day of oil production before each steam throughput revolution is a certain fixed value. In one embodiment, a weak edge water common heavy oil reservoir conceptual model is established, and the daily oil production before the steam stimulation is set to be 1.0 t/d. And (3) carrying out steam throughput prediction for 10 periods by using numerical simulation, and counting daily oil production data of each period. The flow proceeds to step 102.
In step 102, calculating the daily net present value of each period according to the daily oil production data by using a dynamic economic evaluation method; the flow proceeds to step 102.
In step 103, the daily net present value of each period is accumulated to obtain a period accumulated net present value. Meanwhile, the period data with the accumulated net present value of the period in the later development period smaller than 0 are deleted, and the accumulated net present value data of all the previous periods are reserved. The flow proceeds to step 104.
In step 104, the accumulated net present value data of each period is accumulated to obtain the accumulated net present value of the steam throughout development. Fig. 2 is a schematic graph (cycle 1 and cycle 2) of the daily net present value and the cumulative net present value of step 102-104. The flow proceeds to step 105.
In step 105, the daily oil production before the steam throughput is transferred to the week is changed, and the step 101-104 is repeated to calculate the accumulated net current value under different daily oil productions. The cumulative net present value scatter data for different oil production on a weekday is then plotted in a data table. The flow proceeds to step 106.
In step 106, the cumulative net present value scatter data under different oil production days of the revolution is plotted into a data table. And (3) performing unitary quadratic function regression on the scattered point data by adopting a mathematical method, and solving a maximum value, wherein the daily oil yield under the maximum value is a reasonable revolution opportunity. Cumulative net present value NPV and daily oil QoHas the following functional relation:
NPV＝aQo 2+bQo+c
in the formula (I), the compound is shown in the specification,
NPV-cumulative net present value;
Qo-daily oil production;
a. b, c-coefficients of the regressive unitary quadratic function.
FIG. 3 is a graph of oil production versus cumulative net present value on different days. The quadratic function of the regression is:
y＝-27497x2+132609x+548627
by using a quadratic function vertex coordinate formula, the maximum net present value can be solved as follows: 708509 yuan, the corresponding daily oil production is: 2.41t/d, namely the optimal daily oil production of the revolution under the steam stimulation, which means that the steam stimulation steam injection and oil extraction of the next round can be carried out when the daily oil production reaches 2.41 t/d.
The method for determining the steam huff-puff turnaround time of the heavy oil reservoir is based on a numerical reservoir simulation method, combines a dynamic economic evaluation method, and applies a mathematical method to seek the optimal daily oil production of steam huff-puff turnaround under the condition of maximizing economic benefit by taking a financial net present value as a target, so that the steam huff-puff turnaround work is developed economically and efficiently, and the oil field production practice is guided.
Claims (5)
1. The method for determining the steam huff-puff transfer time machine of the heavy oil reservoir is characterized by comprising the following steps of:
step 1, simulating and predicting the daily oil yield in each period of steam stimulation by using an oil reservoir numerical value;
step 2, calculating the daily net present value of each period of the steam throughput by using a dynamic economic evaluation method;
step 3, calculating the accumulated net current value in each period of steam throughput;
step 4, calculating the accumulated net present values of all steam throughput periods;
step 5, calculating the accumulated net current values of all steam huff and puff periods under oil production on different revolution days;
step 6, drawing a relation curve of accumulated net present values under different daily oil productions, and seeking the steam huff and puff turnaround time;
in step 1, assuming that the oil production of the next day before the steam huff and puff is rotated is a certain fixed value;
in the step 2, calculating a daily net present value in a period according to predicted daily oil production data of the period by using a dynamic economic evaluation method;
in step 3, the calculated cumulative net present value in the period should be greater than 0;
in step 6, oil production in different cycles and the corresponding accumulated net current value scattered point data are drawn in a data table, the scattered point data are subjected to unitary quadratic function regression by adopting a mathematical method, and the maximum value of the function is obtained by the mathematical method, the corresponding daily oil production value under the maximum value is the reasonable cycle transfer time, wherein the accumulated net current value NPV and the daily oil production QoHas the following functional relation:
NPV＝aQo 2+bQo+c
in the formula (I), the compound is shown in the specification,
NPV-cumulative net present value;
Qo-daily oil production;
a. b, c-coefficients of the regressive unitary quadratic function.
2. The method for determining the steam stimulation turnaround time of the heavy oil reservoir as claimed in claim 1, wherein in step 1, a reservoir numerical simulation method is used to predict the steam stimulation development effect and calculate the daily oil production of each period.
3. The method for determining steam throughput turnaround time of heavy oil reservoirs according to claim 1, wherein in step 3, the daily net present values in a period are accumulated to obtain the accumulated net present value in the period.
4. The method for determining steam throughput turnaround time of heavy oil reservoirs in claim 1, wherein in step 4, the cumulative net present value of the periods is greater than 0.
5. The method for determining the steam stimulation turnaround time of the heavy oil reservoir according to claim 1, wherein in step 5, the steps 1 to 4 are repeated, and the cumulative net present values of all steam stimulation periods under different oil production days are calculated; and then step 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810591873.2A CN108825190B (en) | 2018-06-08 | 2018-06-08 | Method for determining steam huff-puff turnaround time of heavy oil reservoir |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810591873.2A CN108825190B (en) | 2018-06-08 | 2018-06-08 | Method for determining steam huff-puff turnaround time of heavy oil reservoir |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108825190A CN108825190A (en) | 2018-11-16 |
| CN108825190B true CN108825190B (en) | 2020-08-21 |
Family
ID=64144543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810591873.2A Active CN108825190B (en) | 2018-06-08 | 2018-06-08 | Method for determining steam huff-puff turnaround time of heavy oil reservoir |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108825190B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112946470B (en) * | 2021-02-04 | 2022-06-17 | 东北大学 | Soft measurement method and system for steam throughput cycle time of sucker-rod pumping well |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256034A (en) * | 2013-01-23 | 2013-08-21 | 于文英 | Two important methods for improving steam stimulation effect |
| CN104389569A (en) * | 2014-11-11 | 2015-03-04 | 中国石油天然气股份有限公司 | Steam huff and puff mining method |
| CN107327289A (en) * | 2016-04-28 | 2017-11-07 | 中国石油化工股份有限公司 | A kind of plate method for judging thick oil thermal extraction turn-week steam injection optimal timing |
-
2018
- 2018-06-08 CN CN201810591873.2A patent/CN108825190B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256034A (en) * | 2013-01-23 | 2013-08-21 | 于文英 | Two important methods for improving steam stimulation effect |
| CN104389569A (en) * | 2014-11-11 | 2015-03-04 | 中国石油天然气股份有限公司 | Steam huff and puff mining method |
| CN107327289A (en) * | 2016-04-28 | 2017-11-07 | 中国石油化工股份有限公司 | A kind of plate method for judging thick oil thermal extraction turn-week steam injection optimal timing |
Non-Patent Citations (1)
| Title |
|---|
| 油田措施增油效益评价方法研究;吕琦;《当代石油石化》;20161130;第24卷(第11期);第45-50页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108825190A (en) | 2018-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105579662B (en) | Determining and optimal water injection performance system and method | |
| CN107977749B (en) | Prediction analysis method for oil field development index | |
| RU2672921C1 (en) | Method of regulating development of oil field | |
| CN107423844B (en) | A kind of new method for predicting shale gas/tight gas wells recoverable reserves | |
| CN107944599B (en) | Method for predicting yield of oil-gas horizontal well | |
| CN108301813B (en) | Method for developing and adjusting multilayer sandstone oil reservoir for development of scattered sand bodies | |
| CN104156782A (en) | Balancing-optimalizing method, for project time limit, quality and cost, used in concrete faced rockfill dam construction | |
| CN108825190B (en) | Method for determining steam huff-puff turnaround time of heavy oil reservoir | |
| CN106384188A (en) | Method for evaluating single-well water injection production potential of horizontal well of strongly heterogeneous carbonate reservoir | |
| CN106337679A (en) | Novel method for measuring and calculating well pattern thickening potential | |
| Attanucci et al. | WAG process optimization in the Rangely CO2 miscible flood | |
| CN109252855B (en) | Method and device for determining final cumulative yield of gas well | |
| CN109214022A (en) | A kind of individual well can adopt the method for building up and exploration project reserves index prediction technique of changing rule dynamic model | |
| CN116658155A (en) | Shale gas well yield prediction method | |
| RU2521245C1 (en) | Control method of oil pool development | |
| CN113503158A (en) | Prediction analysis method for relation between shale gas reservoir soaking time and yield | |
| CN102354111A (en) | Working fluid level prediction-based optimization method for stroke frequency of submersible reciprocating oil pumping unit | |
| CN106156876A (en) | The Forecasting Methodology of waterflooding development oil reservoir ultra-high water-containing later stage natural declining rate | |
| RU2528185C1 (en) | Control method of oil pool development | |
| CN105257265A (en) | Method for optimizing CO2 injection rate to increase recovery ratio through CO2 displacement of reservoir oil | |
| RU2558093C1 (en) | Control method of oil pool development | |
| Liu et al. | Subsidy analysis and development trend forecast of China's unconventional natural gas under the new unconventional gas subsidy policy | |
| CN111008775B (en) | Simplified calculation method for useful work based on different structures of mining field | |
| CN113496301B (en) | Oil and gas field asset evaluation method and device | |
| CN107869336A (en) | Super-viscous oil chemistry auxiliary thermal recovery improves recovery ratio method |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |