Method, device and system for selecting oil field recovery gathering and transportation treatment modes

Abstract

The invention provides a method, a device and a system for selecting an oilfield recovery gathering and transportation treatment mode, and belongs to the technical field of oilfield recovery, and the method comprises the following steps: determining a first treatment cost calculation formula of a first gathering and transportation mode by utilizing the water content of oilfield produced liquid, and transporting the produced liquid of an oilfield B to a combination station A for treatment in the first gathering and transportation mode; determining a second processing cost calculation formula of a second gathering and transportation mode by utilizing the water content of the oilfield produced liquid, and processing the produced liquid of the oilfield B in the second gathering and transportation mode in the combination station B after re-transportation; drawing a relation curve between the water content of the oilfield produced liquid and the treatment cost by utilizing the first treatment cost calculation formula and the second treatment cost calculation formula; and selecting a gathering and transportation mode by utilizing a relation curve between the water content of the current oil field produced liquid and the treatment cost. By means of the method, the gathering and transportation mode can be dynamically adjusted along with changes of the liquid production capacity, repeated redundant labor is avoided, and meanwhile economic benefits are optimized.

Description

Technical Field

[0001] The present invention relates to the technical field of oilfield recovery, and in particular to a method for selecting a gathering and transportation processing method for oilfield recovery, a device for selecting a gathering and transportation processing method for oilfield recovery, and a system for selecting a gathering and transportation processing method for oilfield recovery. Background Art

[0002] In recent years, break-even analysis has been widely used in oilfield development projects. Dynamic break-even analysis is to define the break-even state of a project as a state where the net present value is equal to zero. Break-even analysis of crude oil production is a comprehensive analysis method that combines multiple fields such as geology, development, drilling, and ground. In the existing break-even analysis and calculation work of developing or resuming oilfields, the economic analysis of the ground gathering and transportation system is usually used as part of the overall break-even analysis.

[0003] The break-even analysis method for oil field projects in the prior art is usually used when calculating the initial economic output of the oil field, and economic accounting is performed on the specific development plans given by professionals such as oil field development, drilling and production, and ground. There is no dynamic economic evaluation method for a single field of ground oil and gas gathering and transportation systems, especially for oil field resumption projects. Due to the complexity and diversity of existing ground facilities, the selection of resumption plans is usually a static economic evaluation for a specific development deployment. As the oil field resumes production, its liquid production fluctuates greatly, and the comprehensive water content of the produced fluid gradually increases. The original gathering and transportation plan formulated at the beginning of the resumption may no longer adapt to the changing production situation. At this time, if it is considered from an economic perspective, a new round of large-scale calculations is required, which is a huge workload, and the economic analysis is delayed, and it is impossible to select a suitable gathering and transportation method in time. Summary of the invention

[0004] In view of the technical problems in the prior art that it is impossible to conduct dynamic economic evaluation of oil field resumption of production, the amount of calculation is large, the economic analysis is delayed, and it is impossible to timely select a suitable gathering and transportation method, the present invention provides a method for selecting a gathering and transportation processing method for oil field resumption of production, a device for selecting a gathering and transportation processing method for oil field resumption of production, and a system for selecting a gathering and transportation processing method for oil field resumption of production. The method can be used to quickly determine the economic feasibility of a gathering and transportation method according to different development situations, provide convenience for technical personnel to formulate a gathering and transportation plan in the early stage of resumption of production, and dynamically adjust the gathering and transportation method during the resumption of production as the liquid production changes, avoid repeated redundant labor, and optimize economic benefits.

[0005] To achieve the above-mentioned purpose, the first aspect of the present invention provides a method for selecting an oilfield recovery gathering and transportation processing method, comprising the following steps: using the water content of the oilfield produced fluid to determine a first processing cost calculation formula for a first gathering and transportation method, wherein under the first gathering and transportation method, the produced fluid of the B oilfield is transported to the A joint station for processing; using the water content of the oilfield produced fluid to determine a second processing cost calculation formula for a second gathering and transportation method, wherein under the second gathering and transportation method, the produced fluid of the B oilfield is processed at the B joint station after recovery; using the first processing cost calculation formula and the second processing cost calculation formula to draw a relationship curve between the water content of the oilfield produced fluid and the processing cost; and using the relationship curve between the current water content of the oilfield produced fluid and the processing cost to select a gathering and transportation method.

[0006] Furthermore, the first processing cost calculation formula is obtained in the following manner:

[0007]

[0008] Among them, P A is the first processing cost of the first gathering and transportation mode, C OA is the cost of processing one ton of oil at the A joint station, C WA is the water treatment cost per ton at the A joint station, r is the water content of the produced fluid from the B oilfield, T O is the transportation cost of one ton of oil from oil field B to joint station A, T W The cost of transporting one ton of water from Oilfield B to Joint Station A.

[0009] Furthermore, the second processing cost calculation formula is obtained in the following manner:

[0010]

[0011] Among them, P B is the second processing cost of the second gathering and transportation mode, V OB The variable cost of treating one ton of oil before the B joint station is shut down, V WB is the variable cost of treating one ton of water before the B joint station stops production, F is the annual fixed cost of B joint station operation, Q O Predict the annual oil production for Oilfield B.

[0012] Furthermore, the variable cost V of treating one ton of oil before the B joint station is shut down is obtained by the following method: OB :

[0013] V OB =P OE +P OG +P OC ;

[0014] Among them, P OE The electricity cost for processing one ton of oil at the B joint station, P OGP is the fuel gas cost of B joint station per ton of oil. OC The cost of chemicals for processing one ton of oil at Joint Station B.

[0015] Furthermore, the variable cost V of treating one ton of water before the B joint station stops production is obtained by the following method: WB :

[0016] V WB =P WE +P WG +P WC ;

[0017] Among them, P WE The electricity cost of treating one ton of water at the B joint station, P WG is the fuel gas cost per ton of water treated at the B joint station, P WC The cost of water treatment chemicals per ton for Joint Station B.

[0018] Furthermore, the method of using the first processing cost calculation formula and the second processing cost calculation formula to draw a relationship curve between the water content of oilfield produced fluid and the processing cost includes: in the same coordinate system, drawing a relationship curve between the water content of oilfield produced fluid and the first processing cost according to the first processing cost calculation formula, and drawing a relationship curve between the water content of oilfield produced fluid and the second processing cost according to the second processing cost calculation formula, to obtain the relationship curve between the water content of oilfield produced fluid and the processing cost.

[0019] Furthermore, the method of selecting a gathering and transportation method by using the relationship curve between the current water content of the oilfield produced fluid and the processing cost includes: determining a water content turning point based on the relationship curve between the water content of the oilfield produced fluid and the processing cost; and selecting a gathering and transportation method based on the relationship between the current water content of the oilfield produced fluid and the water content turning point.

[0020] Furthermore, the method of selecting a gathering and transportation method based on the relationship between the current water content of the oilfield produced fluid and the water content turning point includes: selecting a first gathering and transportation method when the current water content of the oilfield produced fluid is less than or equal to the water content turning point; and selecting a second gathering and transportation method when the current water content of the oilfield produced fluid is greater than the water content turning point.

[0021] The second aspect of the present invention provides an oilfield recovery gathering and transportation processing method selection device, the oilfield recovery gathering and transportation processing method selection device includes: a cost determination module, which is used to determine a first processing cost calculation formula for a first gathering and transportation method using the water content of the oilfield produced fluid, wherein under the first gathering and transportation method, the produced fluid of the B oilfield is transported to the A joint station for treatment; and a second processing cost calculation formula for a second gathering and transportation method is determined using the water content of the oilfield produced fluid, wherein under the second gathering and transportation method, the produced fluid of the B oilfield is processed at the B joint station after recovery; a relationship curve determination module, which is used to draw a relationship curve between the water content of the oilfield produced fluid and the processing cost using the first processing cost calculation formula and the second processing cost calculation formula; a gathering and transportation method selection module, which is used to select a gathering and transportation method using the relationship curve between the current oilfield produced fluid water content and the processing cost.

[0022] A third aspect of the present invention provides an oilfield recovery gathering and transportation processing method selection system, comprising the oilfield recovery gathering and transportation processing method selection device described above.

[0023] Through the technical solution provided by the present invention, the present invention has at least the following technical effects:

[0024] The method for selecting the oilfield recovery gathering and transportation processing mode of the present invention uses the water content of the oilfield produced fluid to determine the first processing cost calculation formula of the first gathering and transportation mode, wherein under the first gathering and transportation mode, the produced fluid of the B oilfield is transported to the A joint station for processing, and the water content of the oilfield produced fluid is used to determine the second processing cost calculation formula of the second gathering and transportation mode, wherein under the second gathering and transportation mode, the produced fluid of the B oilfield is processed at the B joint station after recovery, and the relationship curve between the water content of the oilfield produced fluid and the processing cost is drawn using the first processing cost calculation formula and the second processing cost calculation formula, and the gathering and transportation mode is selected using the relationship curve between the current water content of the oilfield produced fluid and the processing cost. According to the method provided by the present invention, the economic feasibility of the gathering and transportation mode can be quickly determined according to different development situations, and it is convenient for technical personnel to formulate gathering and transportation plans in the early stage of recovery. During the recovery process, the gathering and transportation mode is dynamically adjusted as the liquid production changes, so as to avoid repeated redundant labor and optimize economic benefits.

[0025] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention. In the accompanying drawings:

[0027] Figure 1 A flow chart of a method for selecting a method for oilfield recovery gathering and transportation processing provided by an embodiment of the present invention;

[0028] Figure 2 A schematic diagram of a relationship curve between the water content of oilfield produced fluid and the processing cost in the method for selecting an oilfield recovery gathering and transportation processing mode provided in an embodiment of the present invention;

[0029] Figure 3 A schematic diagram of an oilfield recovery gathering and transportation processing method selection device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The specific implementation of the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the present invention, and is not used to limit the embodiment of the present invention.

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0032] In the present invention, unless otherwise specified, directional words such as "up, down, top, bottom" are usually used with reference to the directions shown in the drawings or are used to describe the relative positional relationships of components in the vertical, perpendicular or gravity direction.

[0033] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0034] Please refer to Figure 1 An embodiment of the present invention provides a method for selecting an oilfield recovery gathering and transportation processing method, the method comprising the following steps: S101: determining a first processing cost calculation formula for a first gathering and transportation method using the water content of oilfield produced fluid, wherein under the first gathering and transportation method, the produced fluid of oilfield B is transported to joint station A for processing; S102: determining a second processing cost calculation formula for a second gathering and transportation method using the water content of oilfield produced fluid, wherein under the second gathering and transportation method, the produced fluid of oilfield B is processed at joint station B after recovery; S103: drawing a relationship curve between the water content of oilfield produced fluid and the processing cost using the first processing cost calculation formula and the second processing cost calculation formula; S104: selecting a gathering and transportation method using the relationship curve between the current water content of oilfield produced fluid and the processing cost.

[0035] First, step S101 is performed: the first processing cost calculation formula of the first gathering and transportation mode is determined using the water content of the oilfield produced fluid, wherein under the first gathering and transportation mode, the produced fluid of the B oilfield is transported to the A joint station for processing.

[0036] Furthermore, the first processing cost calculation formula is obtained in the following manner:

[0037]

[0038] P A is the first processing cost of the first gathering and transportation mode, C OA is the cost of processing one ton of oil at the A joint station, C WA is the water treatment cost per ton at the A joint station, r is the water content of the produced fluid from the B oilfield, T O is the transportation cost of one ton of oil from oil field B to joint station A, T W The cost of transporting one ton of water from Oilfield B to Joint Station A.

[0039] Specifically, in the implementation mode of the present invention, the oilfield resumption project is usually a step-by-step process. The oilfield to be resumed often opens some high-yield wells first, and then chooses to open other wells with lower production depending on the overall economic benefits. If the ground system corresponding to the oilfield to be resumed, such as the joint station, is resumed as a whole with the oil wells, it is often uneconomical. Oilfield managers will choose to transport the produced fluids of the high-yield wells that have been resumed to the adjacent joint station that has been opened or is always in operation for processing. As the number of oil wells opened increases, the transportation cost gradually increases. When a certain transportation volume is reached, the overall processing cost (including the transportation cost) will exceed the recovery and processing cost of the joint station corresponding to the resumed oilfield. At this time, the oilfield management personnel should put the joint station into operation in time to obtain better economic benefits. How to find the turning point of the economic benefits of the two produced fluid collection and transportation processing is a problem that oilfield managers generally pay attention to. The main purpose of the present invention is to provide a method for dynamic economic analysis of oilfield recovery gathering and transportation processing methods, to help oilfield managers quickly find the turning point of the produced fluid treatment method, so as to timely and effectively change the gathering and transportation processing method and achieve better economic benefits.

[0040] In this embodiment, oilfield B is an oilfield that has just resumed production, and joint station A is a joint station near oilfield B. The first gathering and transportation method is to transport the produced fluid of oilfield B to joint station A for treatment without re-transporting oilfield B. The second gathering and transportation method is to re-transport oilfield B to joint station B, and directly process the produced fluid of oilfield B at joint station B after re-transportation. In order to determine under which production situation (oilfield produced fluid water content) the produced fluid gathering and transportation method is to be converted, the first treatment cost calculation formula of the first gathering and transportation method is first determined using the oilfield produced fluid water content:

[0041]

[0042] P A is the first processing cost of the first gathering and transportation mode, C OA is the cost of processing one ton of oil at the A joint station, C WA is the water treatment cost per ton at the A joint station, r is the water content of the produced fluid from the B oilfield, T O is the transportation cost of one ton of oil from oil field B to joint station A, T W The cost of transporting one ton of water from Oilfield B to Joint Station A.

[0043] Then, step S102 is executed: the water content of the oilfield produced fluid is used to determine the second processing cost calculation formula of the second gathering and transportation mode, wherein under the second gathering and transportation mode, the produced fluid of the B oilfield is processed at the B joint station after re-transportation.

[0044] Furthermore, the second processing cost calculation formula is obtained in the following manner:

[0045]

[0046] Among them, P B is the second processing cost of the second gathering and transportation mode, V OB The variable cost of treating one ton of oil before the B joint station is shut down, V WB is the variable cost of treating one ton of water before the B joint station stops production, F is the annual fixed cost of B joint station operation, Q O Predict the annual oil production for Oilfield B.

[0047] Furthermore, the variable cost V of treating one ton of oil before the B joint station is shut down is obtained by the following method: OB :

[0048] V OB =P OE +P OG +P OC ;

[0049] Among them, P OE The electricity cost for processing one ton of oil at the B joint station, P OG P is the fuel gas cost of B joint station per ton of oil. OC The cost of chemicals for processing one ton of oil at Joint Station B.

[0050] Furthermore, the variable cost V of treating one ton of water before the B joint station stops production is obtained by the following method: WB :

[0051] V WB =P WE +P WG +P WC ;

[0052] Among them, P WE The electricity cost of treating one ton of water at the B joint station, P WG is the fuel gas cost per ton of water treated at the B joint station, P WC The cost of water treatment chemicals per ton for Joint Station B.

[0053] Specifically, in the embodiment of the present invention, the second processing cost calculation formula of the second gathering and transportation mode is determined by using the water content of the oilfield produced fluid:

[0054]

[0055] Among them, P B is the second processing cost of the second gathering and transportation mode, V OB The variable cost of treating one ton of oil before the B joint station is shut down, V WB is the variable cost of treating one ton of water before the B joint station stops production, F is the annual fixed cost of B joint station operation, Q O The predicted annual oil production for Oilfield B can be determined based on the actual conditions of the oilfield.

[0056] Variable cost V of treating tonnes of oil before B joint station is shut down OB for:

[0057] V OB =P OE +P OG +P OC ;

[0058] Among them, P OE The electricity cost for processing one ton of oil at the B joint station, P OG P is the fuel gas cost of B joint station per ton of oil. OC The cost of chemicals for processing one ton of oil at Joint Station B.

[0059] Variable cost V of treating ton of water before B joint station stops production WB for:

[0060] V WB =P WE +P WG +P WC ;

[0061] Among them, P WE The electricity cost of treating one ton of water at the B joint station, P WG is the fuel gas cost per ton of water treated at the B joint station, P WC The cost of water treatment chemicals per ton for Joint Station B.

[0062] V WB and V OB Substitute the formula into P B The second processing cost calculation formula is obtained from the formula.

[0063] Then, step S103 is performed: using the first processing cost calculation formula and the second processing cost calculation formula to draw a relationship curve between the water content of the oilfield produced fluid and the processing cost.

[0064] Furthermore, the method of using the first processing cost calculation formula and the second processing cost calculation formula to draw a relationship curve between the water content of oilfield produced fluid and the processing cost includes: in the same coordinate system, drawing a relationship curve between the water content of oilfield produced fluid and the first processing cost according to the first processing cost calculation formula, and drawing a relationship curve between the water content of oilfield produced fluid and the second processing cost according to the second processing cost calculation formula, to obtain the relationship curve between the water content of oilfield produced fluid and the processing cost.

[0065] Specifically, in the embodiment of the present invention, according to the first processing cost calculation formula and the second processing cost calculation formula, P A is a function of r, when Q O After confirming, P B is also a function of r, and Q O The smaller the P B The larger the value, the larger the P A and P B In the same coordinate system, the relationship curve between the water content of oilfield produced fluid and the first treatment cost is drawn according to the first treatment cost calculation formula, and the relationship curve between the water content of oilfield produced fluid and the second treatment cost is drawn according to the second treatment cost calculation formula, so as to obtain the relationship curve between the water content of oilfield produced fluid and the treatment cost.

[0066] Finally, step S104 is executed: selecting a gathering and transportation method using a relationship curve between the current oilfield produced fluid water content and the processing cost.

[0067] Furthermore, the method of selecting a gathering and transportation method by using the relationship curve between the current water content of the oilfield produced fluid and the processing cost includes: determining a water content turning point based on the relationship curve between the water content of the oilfield produced fluid and the processing cost; and selecting a gathering and transportation method based on the relationship between the current water content of the oilfield produced fluid and the water content turning point.

[0068] Furthermore, the method of selecting a gathering and transportation method based on the relationship between the current water content of the oilfield produced fluid and the water content turning point includes: selecting a first gathering and transportation method when the current water content of the oilfield produced fluid is less than or equal to the water content turning point; and selecting a second gathering and transportation method when the current water content of the oilfield produced fluid is greater than the water content turning point.

[0069] Specifically, in the embodiment of the present invention, the intersection of two curves in the relationship curve between the water content of oilfield produced fluid and the processing cost is determined as the water content turning point, that is, the point where the economic effects of the two gathering and transportation processing methods are the same. After the B oilfield resumes production, the current oilfield produced fluid water content of the produced fluid is detected in real time, and the current oilfield produced fluid water content is compared with the water content turning point. When the current oilfield produced fluid water content is less than or equal to the water content turning point, the first gathering and transportation method is selected; when the current oilfield produced fluid water content is greater than the water content turning point, the second gathering and transportation method is selected.

[0070] Embodiment 1

[0071] The method of the present invention was first used in the Sujiatun Oilfield Rehabilitation Project. In the Sujiatun Oilfield (B Oilfield) Rehabilitation Project, 11 wells were initially rehabilitated, with a daily liquid production of about 55 tons and a daily oil production of about 13 tons. Due to the low production, the corresponding joint station (B Joint Station) was not rehabilitated first, and tank trucks were used to transport the oil to the Qinjiatun Joint Station (A Joint Station) about 60 km away from the Sujiatun Oilfield for treatment. Based on the production data of the previous year at the A Joint Station, the average processing cost per ton of oil in the previous year was calculated as C OA 59.15 yuan / t, and the cost of treating a ton of water C WA 1.11 yuan / m 3 The transportation cost of one ton of oil from Sujiatun Oilfield to Qinjiatun Joint Station A is T O The transportation cost of one ton of water is 42 yuan / t. W 36.05 yuan / m 3 By consulting the data before resumption of production, before resumption of production, the daily liquid production of Sujiatun Oilfield was 97.1 tons and the daily oil production was 30 tons. Based on the energy consumption data before resumption of production, the average variable cost per ton of oil before resumption of production V can be calculated. OB The average variable cost of water treatment per ton before resumption of production is 95.52 yuan / t. WB 3.76 yuan / m 3 The resumption of operation of the joint station B is expected to increase the number of operating and management personnel by 3 people, with an average annual labor cost of 75,000 yuan / year, maintenance and other expenses of about 200,000 yuan / year, and the annual operating fixed cost F of 425,000 yuan / year.

[0072] This example studies the Sujiatun Oilfield, which has an average annual production of 350 days and an annual output (Q O )7000t and 4550t per year, the plot is Figure 2 The relationship curve between the water content of oilfield produced fluid and the processing cost is as follows: Figure 2It can be seen that when the annual production of crude oil is 4550 tons, when the comprehensive water content of produced fluid reaches 72%, it is necessary to promptly transform the production from pulling produced fluid to Qinjiatun Joint Station for processing and production to starting the pipeline production at Sujiatun Joint Station. When the annual production of crude oil is 7000 tons, when the comprehensive water content of produced fluid reaches 62%, it is necessary to promptly transform the production from pulling produced fluid to Qinjiatun Joint Station for processing and production to starting the pipeline production at Sujiatun Joint Station.

[0073] Please refer to Figure 3 According to a second aspect of the present invention, there is provided an oilfield recovery gathering and transportation processing mode selection device, the oilfield recovery gathering and transportation processing mode selection device comprising: a cost determination module, used to determine a first processing cost calculation formula for a first gathering and transportation mode by using the water content of oilfield produced fluid, wherein under the first gathering and transportation mode, the produced fluid of oilfield B is transported to joint station A for treatment; and a second processing cost calculation formula for a second gathering and transportation mode by using the water content of oilfield produced fluid, wherein under the second gathering and transportation mode, the produced fluid of oilfield B is treated at joint station B after recovery; a relationship curve determination module, used to draw a relationship curve between the water content of oilfield produced fluid and the processing cost by using the first processing cost calculation formula and the second processing cost calculation formula; and a gathering and transportation mode selection module, used to select a gathering and transportation mode by using the relationship curve between the current water content of oilfield produced fluid and the processing cost.

[0074] Furthermore, the first processing cost calculation formula is obtained in the following manner:

[0075]

[0076] Among them, P A is the first processing cost of the first gathering and transportation mode, C OA is the cost of processing one ton of oil at the A joint station, C WA is the water treatment cost per ton at the A joint station, r is the water content of the produced fluid from the B oilfield, T O is the transportation cost of one ton of oil from oil field B to joint station A, T W The cost of transporting one ton of water from Oilfield B to Joint Station A.

[0077] Furthermore, the second processing cost calculation formula is obtained in the following manner:

[0078]

[0079] Among them, P B is the second processing cost of the second gathering and transportation mode, V OB The variable cost of treating one ton of oil before the B joint station is shut down, V WB is the variable cost of treating one ton of water before the B joint station stops production, F is the annual fixed cost of B joint station operation, Q O Predict the annual oil production for Oilfield B.

[0080] Furthermore, the variable cost V of treating one ton of oil before the B joint station is shut down is obtained by the following method: OB :

[0081] V OB =P OE +P OG +P OC ;

[0082] Among them, P OE The electricity cost for processing one ton of oil at the B joint station, P OG P is the fuel gas cost of B joint station per ton of oil. OC The cost of chemicals for processing one ton of oil at Joint Station B.

[0083] Furthermore, the variable cost V of treating one ton of water before the B joint station stops production is obtained by the following method: WB :

[0084] V WB =P WE +P WG +P WC ;

[0085] Among them, P WE The electricity cost of treating one ton of water at the B joint station, P WG is the fuel gas cost per ton of water treated at the B joint station, P WC The cost of water treatment chemicals per ton for Joint Station B.

[0086] Furthermore, the method of using the first processing cost calculation formula and the second processing cost calculation formula to draw a relationship curve between the water content of oilfield produced fluid and the processing cost includes: in the same coordinate system, drawing a relationship curve between the water content of oilfield produced fluid and the first processing cost according to the first processing cost calculation formula, and drawing a relationship curve between the water content of oilfield produced fluid and the second processing cost according to the second processing cost calculation formula, to obtain the relationship curve between the water content of oilfield produced fluid and the processing cost.

[0087] Furthermore, the method of selecting a gathering and transportation method by using the relationship curve between the current water content of the oilfield produced fluid and the processing cost includes: determining a water content turning point based on the relationship curve between the water content of the oilfield produced fluid and the processing cost; and selecting a gathering and transportation method based on the relationship between the current water content of the oilfield produced fluid and the water content turning point.

[0088] Furthermore, the method of selecting a gathering and transportation method based on the relationship between the current water content of the oilfield produced fluid and the water content turning point includes: selecting a first gathering and transportation method when the current water content of the oilfield produced fluid is less than or equal to the water content turning point; and selecting a second gathering and transportation method when the current water content of the oilfield produced fluid is greater than the water content turning point.

[0089] A third aspect of the present invention provides an oilfield recovery gathering and transportation processing method selection system, comprising the oilfield recovery gathering and transportation processing method selection device described above.

[0090] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0091] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0092] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A method for selecting a gathering and transportation treatment method for oilfield recovery, characterized in that: The method for selecting the oilfield recovery gathering and transportation processing method includes: The first treatment cost calculation formula of the first gathering and transportation mode is determined by using the water content of the oilfield produced fluid, wherein under the first gathering and transportation mode, the produced fluid of the B oilfield is transported to the A joint station for treatment; The second treatment cost calculation formula of the second gathering and transportation mode is determined by using the water content of the produced fluid of the oil field, wherein the produced fluid of the B oil field is processed at the B joint station after re-transportation under the second gathering and transportation mode; Draw a relationship curve between the water content of oilfield produced fluid and the processing cost using the first processing cost calculation formula and the second processing cost calculation formula; The relationship curve between the water content of the current oilfield produced fluid and the processing cost is used to select the gathering and transportation method.

2. The method for selecting an oilfield recovery gathering and transportation processing method according to claim 1, characterized in that: The first processing cost calculation formula is obtained by the following method: Among them, P A is the first processing cost of the first gathering and transportation mode, C OA is the cost of processing one ton of oil at the A joint station, C WA is the water treatment cost per ton at the A joint station, r is the water content of the produced fluid from the B oilfield, T O is the transportation cost of one ton of oil from oil field B to joint station A, T W The cost of transporting one ton of water from Oilfield B to Joint Station A.

3. The method for selecting a method for oilfield recovery and gathering and transportation according to claim 1, characterized in that: The second processing cost calculation formula is obtained by the following method: Among them, P B is the second processing cost of the second gathering and transportation mode, V OB The variable cost of treating one ton of oil before the B joint station is shut down, V WB is the variable cost of treating one ton of water before the B joint station stops production, F is the annual fixed cost of B joint station operation, Q O Predict the annual oil production for Oilfield B.

4. The method for selecting an oilfield recovery gathering and transportation processing method according to claim 3 is characterized in that: The variable cost V of treating tons of oil before the B joint station is shut down can be obtained by the following method: OB : V OB =P OE +P OG +P OC ; Among them, P OE The electricity cost for processing one ton of oil at the B joint station, P OG P is the fuel gas cost of B joint station per ton of oil. OC The cost of chemicals for processing one ton of oil at Joint Station B.

5. The method for selecting an oilfield recovery gathering and transportation processing method according to claim 3, characterized in that: The variable cost V of treating 1 ton of water before the B joint station stops production can be obtained by the following method: WB : V WB =P WE +P WG +P WC ; Among them, P WE The electricity cost of treating one ton of water at the B joint station, P WG is the fuel gas cost per ton of water treated at the B joint station, P WC The cost of water treatment chemicals per ton for Joint Station B.

6. The method for selecting an oilfield recovery gathering and transportation processing method according to claim 1, characterized in that: The method of using the first processing cost calculation formula and the second processing cost calculation formula to draw a relationship curve between the water content of oilfield produced fluid and the processing cost includes: In the same coordinate system, a relationship curve between the water content of the oilfield produced fluid and the first processing cost is drawn according to the first processing cost calculation formula, and a relationship curve between the water content of the oilfield produced fluid and the second processing cost is drawn according to the second processing cost calculation formula to obtain the relationship curve between the water content of the oilfield produced fluid and the processing cost.

7. The method for selecting a method for oilfield recovery gathering and transportation processing according to claim 6, characterized in that: The method of selecting the gathering and transportation method by using the relationship curve between the water content of the current oilfield produced fluid and the processing cost includes: Determine the turning point of water content according to the relationship curve between water content of produced fluid from the oil field and the processing cost; Select the gathering and transportation method based on the relationship between the current water content of the oilfield produced fluid and the turning point of the water content.

8. The method for selecting a method for oilfield recovery and gathering and transportation according to claim 7, characterized in that: The method of selecting the gathering and transportation method according to the relationship between the current water content of the produced fluid in the oil field and the turning point of the water content includes: When the water content of the produced fluid of the current oil field is less than or equal to the water content turning point, selecting the first gathering and transportation mode; When the current water content of the produced fluid from the oil field is greater than the water content turning point, the second gathering and transportation mode is selected.

9. An oilfield recovery gathering and transportation processing mode selection device, characterized in that: The oilfield recovery gathering and transportation processing mode selection device comprises: The cost determination module is used to determine a first processing cost calculation formula for a first gathering and transportation mode by using the water content of the oilfield produced fluid, wherein under the first gathering and transportation mode, the produced fluid of the B oilfield is transported to the A joint station for treatment; and to determine a second processing cost calculation formula for a second gathering and transportation mode by using the water content of the oilfield produced fluid, wherein under the second gathering and transportation mode, the produced fluid of the B oilfield is treated at the B joint station after re-transportation; A relationship curve determination module, used for drawing a relationship curve between the water content of oilfield produced fluid and the processing cost using the first processing cost calculation formula and the second processing cost calculation formula; The gathering and transportation mode selection module is used to select the gathering and transportation mode by using the relationship curve between the water content of the current oilfield produced fluid and the processing cost.

10. A system for selecting a gathering and transportation processing method for oilfield recovery, characterized in that: It comprises the oilfield recovery gathering and transportation processing method selection device as described in claim 9.

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