Method for using oil reservoir structure descending method to forecast crude output

A production and crude oil technology, applied in the directions of measurement, earthwork drilling, special data processing applications, etc., can solve the problem that the annual production cannot be completed smoothly, the actual production arrangement and production plan lack the guidance of the predicted value, and it is difficult to complete and implement smoothly And other issues

Inactive Publication Date: 2015-04-01
KARAMAY HONGYOU SOFTWARE
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Problems solved by technology

[0004] This method of predicting the annual output and monthly output of the next year, since the predicted output value of each month is the same, in practice, the same production tasks can be arranged every month, but the situation in actual production is more complicated and may A failure or special situation occurred in a certain month, which made the oil field or oil area unable to complete the production plan, which led to the failure of the annual production to be completed smoothly; in order to ensure the smooth completion of the annual production, the production increase strategy is generally adopted,...

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  • Method for using oil reservoir structure descending method to forecast crude output

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Embodiment 1

[0197] Embodiment 1, old well natural output operation method

[0198] Using the method for predicting crude oil production using the reservoir structure decline method provided by the embodiment of the present invention, the natural production of an old well in a certain block of the Fengcheng Oilfield operation area of ​​Karamay Oilfield, Xinjiang in 2014 is predicted:

[0199] When Di 1 ~Di 11 12 =di, the results are shown in Table 1 and figure 1 as shown, figure 1 , the abscissa is the month, and the ordinate is the daily oil production level.

[0200] It can be seen from Table 1 that from the beginning of the year to the end of the year, the annual natural decline rate of n months gradually increases until the annual natural decline rate of December is equal to the annual natural decline rate of the year, and the cumulative annual output of n months gradually increases until The cumulative annual output in December is equal to the annual output, and the production tas...

Embodiment 2

[0215] Embodiment 2, new well production operation method

[0216] Using the method for predicting crude oil production using the reservoir structure decline method provided by the embodiment of the present invention, the production of new wells in the Fengcheng oilfield operation area of ​​Karamay City, Xinjiang in 2014 was predicted.

[0217] According to the overall arrangement and production time of new wells throughout the year, combined with the production of single wells, the production of new wells in the oil field is predicted according to the workload and production of new wells, and the monthly oil production of new wells is calculated on a monthly basis.

[0218] Table 5 shows the time and quantity of new wells put into production, and Table 6 shows the prediction results obtained according to the method for predicting the production of new wells provided by the embodiment of the present invention.

[0219] Table 5 New well production forecast information table

...

Embodiment 3

[0225] Embodiment 3, operation method of measure well output

[0226] Using the method for predicting crude oil production using the reservoir structure decline method provided by the embodiment of the present invention, the production of measure wells in the Fengcheng operation area of ​​Xinjiang Karamay Oilfield in 2014 was predicted.

[0227] When the production forecast of the measures is generally normal, the well number of the measures for next year is put forward through analysis and planning, and the production of measures for oil fields, oil areas, and mining areas for next year is calculated according to the increased production of individual wells. However, when arranging next year's production, it is necessary to determine the output of the whole year of next year based on the production composition of the oilfield and mining area, the composition of the measures and the workload of the measures in previous years, formulate a macro-guiding production, and try to arr...

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Abstract

The invention discloses a method for using an oil reservoir structure descending method to forecast crude output and relates to the crude output forecasting field. According to the method for using the oil reservoir structure descending method to forecast the crude output, when forecasting the crude output of the coming year, in order to successfully finish the production plan of the whole year, combining with the arrangement and plan situations of the actual production of an oil field, the monthly crude output of each of an old well, a new well and a service well is calculated through using the monthly natural descending rate of each of the old well, new well and/or service well. Because the method for using the oil reservoir structure descending method to forecast the crude output combines the actual production situation, the matching relationship between the forecast value and the actual production process is good, the forecast value can well guide the actual production process, the monthly forecast output can be finished and implemented better according to the actual production arrangement and production plan, and the production plan of the whole year can be finished smoothly.

Description

technical field [0001] The invention relates to the field of prediction of crude oil production, in particular to a method for predicting crude oil production by using the oil reservoir structure decline method. Background technique [0002] In the process of oil field development, it is necessary to predict the crude oil production in the next year and arrange and plan the crude oil production work in the next year. Among them, crude oil production forecast includes natural production forecast of old wells, production forecast of measure wells and production forecast of new wells. [0003] At present, when people predict the output of the next year, they usually only consider the annual natural decline rate, use the annual output of the previous year and the annual natural decline rate to predict the annual output of the next year, and then use the annual output to calculate the monthly output of the next year. average yield. [0004] This method of predicting the annual ...

Claims

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Application Information

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IPC IPC(8): E21B47/00G06F19/00
CPCE21B47/00G16Z99/00
Inventor 张含金张伟利
Owner KARAMAY HONGYOU SOFTWARE
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