Skid-mounted pump liquid supplementing and energy increasing injection amount calculation method

Abstract

The invention relates to the technical field of oil production engineering, in particular to a skid-mounted pump liquid supplementing and energy increasing injection amount calculation method. The method comprises the steps that a target well is determined, the oil layer middle depth and the current oil layer pressure of the target well are obtained, and the original oil layer pressure and the void coefficient are calculated; the fluid infusion thickness of the target layer is calculated according to the obtained ejection thickness and effective thickness of the target layer of the target well, and the theoretical fluid infusion volume is calculated in combination with the well spacing; calculating a connectivity coefficient according to the obtained target stratum connectivity number of the target well; according to the void coefficient, the theoretical fluid infusion volume and the communication coefficient, the converted fluid infusion volume of the target layer of the target well is calculated; and calculating the additional value of the converted liquid supplementing volume according to the obtained accumulated water injection rate of the target well and the accumulated production rate of the connected well, calculating the final liquid supplementing volume of the target well by combining the converted liquid supplementing volume, and carrying out brief evaluation on the target well by utilizing the final liquid supplementing volume. The method provided by the invention is comprehensive, accurate, high in operability and suitable for accurately determining the water replenishing amount of the skid-mounted pump.

Description

Technical Field

[0001] The invention relates to the technical field of oil production engineering, and in particular to a method for calculating the injection amount of a skid-mounted pump for replenishing and energizing. Background Art

[0002] At present, due to the influence of under-injected wells, the connected oil wells have poor efficiency, the production has gradually decreased, and the number of inefficient oil wells has increased year by year. The management of under-injected wells has become the key to tapping the potential and increasing the efficiency of oil fields. Among them, in order to solve the problem of under-injection of water wells due to poor oil layer development in low permeability reservoirs, various oil fields have carried out field tests of skid-mounted pump water replenishment technology. Shengli Oilfield in China carried out a large-volume high-pressure water injection test on 15 well groups, injecting 11 years of water in 43 days, and the daily production capacity of a single well was restored to 0.8 times the initial level; Tatarstan Oil Company abroad used slave pumps to conduct pressurized water injection tests on 5 wells, with an injection volume of 200-700m 3 / d, and surfactants were injected at the same time. After treatment, the water absorption of a single well increased by an average of 1.5 times, with a validity period of 1 year; Daqing Oilfield Production Plant No. 7 carried out a skid-mounted pump water replenishment field test on 10 wells, and 9062m of clean water was injected into each well. 3 After the measures were taken, the daily oil production of the connected oil wells increased by 1.5 tons, and the cumulative oil production increased by 351 tons during the period.

[0003] At present, the conventional water replenishment volume for a single well and each single layer is not accurate, and the formula Q = π × r is generally used. 2 ×H×Φ, where r is the well spacing, H is the effective thickness, and Φ is the porosity. The calculation method uses a single parameter and has the following problems: First, the reservoir pressure is different, but the effective thickness is the same, so the water replenishment amount is the same; second, the perforation thickness is different, but the effective thickness is the same, so the water replenishment amount is the same; third, the number of connected wells is different, but the effective thickness is the same, so the water replenishment amount is the same; fourth, the injection and production volume that has occurred is different, but the effective thickness is the same, so the water replenishment amount is the same. In other words, the existing water replenishment calculation method does not take into account the degree of deficit of a single well, the injection and production relationship that has occurred, the reservoir pressure of each layer, the number of connected wells, the perforation thickness and the effective thickness ratio, and cannot achieve the purpose of precise water injection. Therefore, in response to the above shortcomings, a skid-mounted pump fluid replenishment and energy enhancement injection volume calculation method is proposed. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] The present invention provides a method for calculating the injection volume of a skid-mounted pump for replenishment and energy enhancement, so as to overcome the problem in the prior art that the pressure of different oil layers, the perforation thickness, the effective thickness and the number of connected wells are not taken into consideration on site, resulting in the low accuracy of water replenishment in the existing algorithm, and the inability to achieve precise water replenishment, resulting in a waste of manpower and material resources.

[0006] (II) Technical solution

[0007] In order to solve the above problems, the present invention provides a method for calculating the injection amount of a skid-mounted pump for replenishing and energizing, comprising:

[0008] Step S1: determine the target well, obtain the middle depth of the oil layer of the target well, and calculate the original oil layer pressure according to the middle depth of the oil layer;

[0009] Step S2: Obtain the current reservoir pressure of the target well, and calculate the deficit coefficient in combination with the original reservoir pressure obtained in step S1;

[0010] Step S3: Obtain the perforation thickness and effective thickness of the target layer of the target well, calculate the fluid replenishment thickness of the target layer according to the perforation thickness and the effective thickness, and calculate the theoretical fluid replenishment volume in combination with the well spacing;

[0011] Step S4: obtaining the target layer connectivity number of the target well, and calculating the connectivity coefficient according to the target layer connectivity number of the target well;

[0012] Step S5: Calculate the converted fluid replenishment volume of the target layer of the target well according to the deficit coefficient obtained in step S2, the theoretical fluid replenishment volume obtained in step S3, and the connectivity coefficient obtained in step S4;

[0013] Step S6: Obtain the cumulative water injection volume of the target well and the cumulative production volume of the connected wells, and calculate the additional value of the converted fluid replenishment volume according to the cumulative water injection volume and the cumulative production volume;

[0014] Step S7: Calculate the final fluid replenishment volume of the target well according to the converted fluid replenishment volume obtained in step S5 and the additional value of the converted fluid replenishment volume obtained in step S6, and use it to briefly evaluate the target well.

[0015] Preferably, in step S1, the pressure gradient is calculated as 100m / MPa, and the calculation formula of the original oil layer pressure is:

[0016] P 原始 =H 中深 / 100 (1)

[0017] Where: P 原始 —Original reservoir pressure, MPa; H 中深 —Depth of middle oil layer, m.

[0018] Preferably, in step S2, the calculation formula of the deficit coefficient is:

[0019] γ=1-(P 目前 / P 原始 ) 2 / 3 (2)

[0020] In the formula: γ—deficit coefficient, %; P 目前 —Current reservoir pressure, MPa; P 原始—Original reservoir pressure, MPa.

[0021] Preferably, in step S3, the calculation formula of the fluid replenishment thickness is:

[0022] H 补液 =1 / 3×(H 射开 -H 有效 )+H 有效 (3)

[0023] Where: H 补液 —Filling thickness, m; H 射开 —Opening thickness, m; H 有效 —Effective thickness, m.

[0024] Preferably, the calculation formula for the theoretical fluid replacement volume is:

[0025] V 理论 =π×(r / 3) 2 ×H 补液 ×Φ (4)

[0026] Where: V 理论 —Theoretical fluid replacement volume, m 3 ; r—well spacing, m; H 补液 —Filling thickness, m; Φ—porosity, %; π—pi, take 3.14.

[0027] Preferably, in step S4, the calculation formula of the connectivity coefficient is:

[0028] λ=1+ln[(k+2) / 6], k≦4 (5)

[0029] In the formula: λ—connectivity coefficient; k—connectivity number, k≦4.

[0030] Preferably, in step S7, the calculation formula for the final fluid replacement volume is:

[0031] V 最终 =V 折算 +V 附加 (6)

[0032] Where: V 最终 —Final volume of fluid replacement, m 3 ; V 折算 —Converted volume of fluid replacement, m 3 ; V 附加 —Additional value of converted fluid replacement volume, m 3 .

[0033] Preferably, in step S5, the calculation formula for converting the fluid replacement volume is:

[0034] V折算 =γ×λ×V 理论 (7)

[0035] Where: V 折算 —Converted volume of fluid replacement, m 3 ;γ—deficit coefficient, %; V 理论 —Theoretical fluid replacement volume, m 3 ;λ—connectivity coefficient.

[0036] Preferably, in step S6, the calculation formula of the additional value of the converted fluid replacement volume is:

[0037] V 附加 =[V 理论 -(Q 累注 -Q 累采 )]×[1-(k / 6) 1 / 2 ] (8)

[0038] Where: V 附加 —Additional value of converted fluid replacement volume, m 3 ; V 理论 —Theoretical fluid replacement volume, m 3 ; k—connectivity number, k≦4; Q 累注 —Cumulative water injection volume, m 3 ;Q 累采 —Cumulative extraction volume, m 3 .

[0039] (III) Beneficial effects

[0040] The present invention provides a method for calculating the injection volume of a skid-mounted pump for replenishment and energy enhancement. The method obtains an empirical formula by considering factors such as the degree of deficit of a single well, the injection-production relationship that has occurred, the oil layer pressure of each layer, the perforation thickness, the number of connected wells and the connected thickness ratio, and calculates the water replenishment volume of each layer. In actual applications, the method is comprehensive and accurate, highly operational, highly targeted for single wells and single layers, and does not require moving the tubing string for operation. It is suitable for precise determination of the water replenishment volume of a skid-mounted pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a flow chart of a method for calculating the injection amount of a skid-mounted pump for replenishing and increasing energy according to an embodiment of the present invention;

[0042] Figure 2 Schematic diagram of the L well connection in an embodiment of the present invention. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Figure 1 Flow chart of the method for calculating the injection amount of the skid-mounted pump for replenishment and energy enhancement according to an embodiment of the present invention. Figure 1 As shown, the present invention provides a method for calculating the injection amount of a skid-mounted pump for replenishing and energizing, comprising:

[0045] Step S1: determine the target well, obtain the middle depth of the oil layer of the target well, and calculate the original oil layer pressure according to the middle depth of the oil layer.

[0046] In this calculation method, in step S1, the pressure gradient is calculated as 100m / MPa, and the calculation formula of the original oil layer pressure is:

[0047] P 原始 =H 中深 / 100 (1)

[0048] Where P 原始 —Original reservoir pressure, MPa; H 中深 —Depth of middle oil layer, m.

[0049] Step S2: Obtain the current reservoir pressure of the target well, and calculate the deficit coefficient in combination with the original reservoir pressure obtained in step S1.

[0050] In practical applications, in step S2, the calculation formula of the deficit coefficient is:

[0051] γ=1-(P 目前 / P 原始 ) 2 / 3 (2)

[0052] In the formula: γ—deficit coefficient, %; P 目前 —Current reservoir pressure, MPa; P 原始 —Original reservoir pressure, MPa.

[0053] Step S3: Obtain the perforation thickness and effective thickness of the target layer of the target well, calculate the fluid replenishment thickness of the target layer according to the perforation thickness and the effective thickness, and calculate the theoretical fluid replenishment volume in combination with the well spacing.

[0054] In this calculation method, in step S3, the calculation formula for the fluid replenishment thickness is:

[0055] H 补液 =1 / 3×(H 射开-H 有效 )+H 有效 (3)

[0056] Where: H 补液 —Filling thickness, m; H 射开 —Opening thickness, m; H 有效 —Effective thickness, m.

[0057] Furthermore, the calculation formula for the theoretical fluid replacement volume is:

[0058] V 理论 =π×(r / 3) 2 ×H 补液 ×Φ (4)

[0059] Where: V 理论 —Theoretical fluid replacement volume, m 3 ; r—well spacing, m; H 补液 —Filling thickness, m; Φ—porosity, %; π—pi, take 3.14.

[0060] Step S4: Obtain the target layer connectivity number of the target well, and calculate the connectivity coefficient according to the target layer connectivity number of the target well.

[0061] In practical applications, in step S4, the calculation formula of the connectivity coefficient is:

[0062] λ=1+ln[(k+2) / 6], k≦4 (5)

[0063] In the formula: λ—connectivity coefficient; k—connectivity number, k≦4.

[0064] Step S5: Calculate the converted fluid replenishment volume of the target layer of the target well according to the deficit coefficient obtained in step S2, the theoretical fluid replenishment volume obtained in step S3 and the connectivity coefficient obtained in step S4.

[0065] In this calculation method, in step S5, the calculation formula for converting the volume of fluid replacement is:

[0066] V 折算 =γ×λ×V 理论 (7)

[0067] Where: V 折算 —Converted volume of fluid replacement, m 3 ;γ—deficit coefficient, %; V 理论 —Theoretical fluid replacement volume, m 3 ;λ—connectivity coefficient.

[0068] Step S6: Obtain the cumulative water injection volume of the target well and the cumulative production volume of the connected wells, and calculate the additional value of the converted fluid replenishment volume based on the cumulative water injection volume and the cumulative production volume.

[0069] In practical applications, in step S6, the calculation formula for the additional value of the converted fluid replacement volume is:

[0070] V 附加 =[V 理论 -(Q 累注 -Q 累采 )]×[1-(k / 6) 1 / 2 ] (8)

[0071] Where: V 附加 —Additional value of converted fluid replacement volume, m 3 ; V 理论 —Theoretical fluid replacement volume, m 3 ; k—connectivity number, k≦4; Q 累注 —Cumulative water injection volume, m 3 ;Q 累采 —Cumulative extraction volume, m 3 .

[0072] Furthermore, due to the amount of fluid required, 累采 Compared to Q 累注 and the volume of fluid replacement V 理论 can be ignored, so formula (8) can be simplified to:

[0073] V 附加 =(V 理论 -Q 累注 )×[1-(n / 6) 1 / 2 ] (9)

[0074] Where: V 附加 —Additional value of converted fluid replacement volume, m 3 ; V 理论 —Theoretical fluid replacement volume, m 3 ; k—connectivity number, k≦4; Q 累注 —Cumulative water injection volume, m 3 .

[0075] Step S7: Calculate the final fluid replenishment volume of the target well according to the converted fluid replenishment volume obtained in step S5 and the additional value of the converted fluid replenishment volume obtained in step S6, and use it to briefly evaluate the target well.

[0076] In this calculation method, in step S7, the calculation formula for the final fluid replacement volume is:

[0077] V 最终 =V 折算 +V 附加 (6)

[0078] Where: V 最终 —Final volume of fluid replacement, m 3 ; V折算 —Converted volume of fluid replacement, m 3 ; V 附加 —Additional value of converted fluid replacement volume, m 3 .

[0079] In practical applications, this calculation method can not only accurately obtain the water replenishment volume of the target well target layer by calculating the final water replenishment volume according to step S7, but also further realize the specific analysis of single well and single layer, greatly improving the water injection development effect.

[0080] The present invention provides a method for calculating the injection volume of a skid-mounted pump for replenishment and energy enhancement. The method obtains an empirical formula and calculates the water replenishment volume of each layer by considering factors such as the degree of deficit of a single well, the injection-production relationship that has occurred, the oil layer pressure of each layer, the perforation thickness, the number of connected wells and the connected thickness ratio. The method is not only simple to operate and the parameters used are easy to obtain, but also has strong specificity for a single well and a single layer, and is suitable for the accurate determination of the water replenishment volume of a skid-mounted pump.

[0081] Water drive in Daqing Oilfield is still the main body of oilfield production and benefits, and continues to play the role of production ballast. At present, water drive under-injection wells in Daqing Oilfield account for 11.6% of the total number of water wells, which greatly affects the effect of water injection development. Among them, under-injection wells due to oil layer pollution and poor oil layer development account for more than 60% of the total number of under-injection wells, which is the main factor affecting the effect of oilfield water injection development. The existing method of calculating the amount of water replenishment does not take into account the degree of deficit of a single well, the injection-production relationship that has occurred, the oil layer pressure of each layer, the number of connected wells, the perforation thickness and the effective thickness ratio, and cannot achieve the purpose of precise water injection. The following is a detailed description of the implementation process of this skid-mounted pump fluid replenishment and energy enhancement injection volume calculation method:

[0082] In this embodiment, the water replenishment method for each layer of the L well in a low permeability block of Daqing Oilfield is shown in Table 1. The L well is an under-injection well in a low permeability block of Daqing Oilfield. The well has a perforation thickness of 5.1 meters, an effective thickness of 1.6 meters, an oil layer medium depth of 1323.5 meters, an average porosity of 23%, and a current oil layer pressure of 8.58 MPa. There are 3 connected wells and 2 small layers. Table 1 shows the data of each layer of the L well in a low permeability block of Daqing Oilfield. As shown in Table 1, the small layer data are as follows:

[0083] Table 1: Data of each layer of Well L in a low permeability block of Daqing Oilfield

[0084]

[0085] In practical applications, the V 附加 —Additional value of converted fluid replacement volume, m 3 ; V 理论 —Theoretical fluid replacement volume, m 3 ; k—connectivity number, k≦4; Q 累注 —Cumulative water injection volume, m3 Follow the steps below to determine, taking the PI1 layer as an example:

[0086] Step 1: Passing the middle depth H of the oil layer 中深 , calculate the original reservoir pressure P 原始 :

[0087] P 原始 =H 中深 / 100=1325.5 / 100=13.25MPa;

[0088] Step 2: Based on the current formation pressure P 目前 and the original reservoir pressure P 原始 Calculate the reservoir deficit coefficient γ:

[0089] γ=1-(P 目前 / P 原始 ) 2 / 3 =1-(8.58 / 13.25) 2 / 3 =0.25;

[0090] Step 3: According to the opening thickness H of the PI1 layer 射开 and effective thickness H 有效 , calculate its converted thickness H 补液 :

[0091] H 补液 =H 有效 +1 / 3×(H 射开 -H 有效 )=0.5+1 / 3×(3.6-0.5)=1.53m;

[0092] Based on the well spacing r, fluid replenishment thickness H 补液 And the porosity to obtain the theoretical rehydration volume V of the PⅠ1 layer 理论 ;

[0093] V 理论 =π×(r / 3) 2 ×H 补液 ×Φ=3.14×(320 / 3) 2 ×1.53×0.23=12599.45m 3 ;

[0094] Step 4: Calculate the connectivity coefficient λ of the layer according to the connectivity direction n of the PⅠ1 layer:

[0095] λ=1+ln[(k+2) / 6]=1+ln[(3+2) / 6]=0.82;

[0096] Step 5: Based on the parameters obtained from steps 2 to 4, the converted rehydration volume of the PI1 layer is obtained:

[0097] V 折算 =λ×V 理论 ×γ=0.25×12599.45×0.82=2585.40m 3 ;

[0098] Step 6: Based on the cumulative water injection volume Q of the PⅠ1 layer 累注 Get the additional value of the converted fluid replacement volume for this layer:

[0099] V 附加 =(VQ 累注 )×[1-(k / 6) 1 / 2 ]=(12599.45-10600)×[1-(3 / 6) 1 / 2 ]=585.62m 3 ;

[0100] Step 7: Based on the data obtained in Steps 5 and 6, calculate the final rehydration volume of the well and use it to briefly evaluate the target well. The final rehydration volume is:

[0101] V 最终 =V 折算 +V 附加 =2585.40+585.62=3170.02m 3

[0102] In this embodiment, Table 2 shows the determination of the fluid replenishment volume of each layer of Well L in a low permeability block of Daqing Oilfield. As shown in Table 2, the final fluid replenishment volume is corrected according to the engineering needs and the convenience of on-site preparation and measurement, and the skid-mounted pump fluid replenishment volumes of PI1-2 layer and PI3 layer are 3170m 3 and 3310m 3 .

[0103] Table 2: Determination of water replenishment for each layer in Well L of a low permeability block in Daqing Oilfield

[0104]

[0105] In practical applications, Figure 2 FIG. 1 is a schematic diagram of the connection of the L well in an embodiment of the present invention, as shown in FIG. Figure 2 As shown in Figure 3, a field test was carried out based on the calculated liquid replenishment volume of Well L. Well L was replenished with water. Table 3 shows the production of connected oil wells after water replenishment of Well L in a low permeability block of Daqing Oilfield. As shown in Table 3, after a period of time, compared with before water replenishment, the daily liquid production of Well 1 and Well 2 connected with it increased by 0.81t and 0.64t, respectively, with an increase of 90% and 91%, respectively; at the same time, the daily oil production of Well 1 and Well 2 also increased by 0.7t and 0.64t, respectively, indicating that water replenishment of Well L greatly improved the development effect of Well 1 and Well 2.

[0106] Table 3: Production of connected oil wells after water replenishment in Well L in a low permeability block of Daqing Oilfield

[0107]

[0108] In this embodiment, the field test of Well L proves that the method for determining the water replenishment amount of the skid-mounted pump in the present invention can accurately obtain the water replenishment amount of the target layer of the target well, realize the specific analysis of a single well and a single layer, and greatly improve the effect of water injection development.

[0109] The present invention provides a method for calculating the injection volume of a skid-mounted pump for replenishment and energy enhancement. The method obtains an empirical formula by considering factors such as the degree of deficit of a single well, the injection-production relationship that has occurred, the oil layer pressure of each layer, the perforation thickness, the number of connected wells and the connected thickness ratio, and calculates the water replenishment volume of each layer. In actual applications, the method is comprehensive and accurate, highly operational, highly targeted for single wells and single layers, and does not require moving the tubing string for operation. It is suitable for precise determination of the water replenishment volume of a skid-mounted pump.

[0110] The above implementation modes are only used to illustrate the present invention, but not to limit the present invention. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention. The patent protection scope of the present invention should be defined by the claims.

Claims

1. A method for calculating the injection volume of a skid-mounted pump for replenishing and energizing the pump, characterized in that: include: Step S1: determine the target well, obtain the middle depth of the oil layer of the target well, and calculate the original oil layer pressure according to the middle depth of the oil layer; Step S2: Obtain the current reservoir pressure of the target well, and calculate the deficit coefficient in combination with the original reservoir pressure obtained in step S1; Step S3: Obtain the perforation thickness and effective thickness of the target layer of the target well, calculate the fluid replenishment thickness of the target layer according to the perforation thickness and the effective thickness, and calculate the theoretical fluid replenishment volume in combination with the well spacing; Step S4: obtaining the target layer connectivity number of the target well, and calculating the connectivity coefficient according to the target layer connectivity number of the target well; Step S5: Calculate the converted fluid replenishment volume of the target layer of the target well according to the deficit coefficient obtained in step S2, the theoretical fluid replenishment volume obtained in step S3, and the connectivity coefficient obtained in step S4; Step S6: Obtain the cumulative water injection volume of the target well and the cumulative production volume of the connected wells, and calculate the additional value of the converted fluid replenishment volume according to the cumulative water injection volume and the cumulative production volume; Step S7: Calculate the final fluid replenishment volume of the target well according to the converted fluid replenishment volume obtained in step S5 and the additional value of the converted fluid replenishment volume obtained in step S6, and use it to briefly evaluate the target well.

2. The method for calculating the injection volume of a skid-mounted pump for replenishing and energizing according to claim 1 is characterized in that: In step S1, the pressure gradient is calculated as 100m / MPa, and the calculation formula of the current reservoir pressure is: P 原始 =H 中深 / 100 (1) Where: P 原始 —Original reservoir pressure, MPa; H 中深 —Depth of middle oil layer, m.

3. The method for calculating the injection volume of a skid-mounted pump for replenishing and energizing according to claim 1 is characterized in that: In step S2, the calculation formula of the deficit coefficient is: γ=1-(P 目前 / P 原始 ) 2 / 3 (2) In the formula: γ—deficit coefficient, %; P 目前 —Current reservoir pressure, MPa; P 原始 —Original reservoir pressure, MPa.

4. The method for calculating the injection volume of a skid-mounted pump for replenishing and energizing according to claim 1 is characterized in that: In step S3, the calculation formula of the fluid replenishment thickness is: H 补液 =1 / 3×(H 射开 -H 有效 )+H 有效 (3) Where: H 补液 —Filling thickness, m; H 射开 —Opening thickness, m; H 有效 —Effective thickness, m.

5. The method for calculating the injection volume of the skid-mounted pump for replenishing and energizing according to claim 4 is characterized in that: In step S3, the calculation formula of the theoretical fluid replacement volume is: V 理论 =π×(r / 3) 2 ×H 补液 ×Φ(4) Where: V 理论 —Theoretical fluid replacement volume, m 3 ; r—well spacing, m; H 补液 —Filling thickness, m; Φ—porosity, %; π—pi, take 3.

14.

6. The method for calculating the injection volume of a skid-mounted pump for replenishing and energizing according to claim 1 is characterized in that: In step S4, the calculation formula of the connectivity coefficient is: λ=1+ln[(k+2) / 6], k≦4 (5) In the formula: λ—connectivity coefficient; k—connectivity number, k≦4.

7. The method for calculating the injection volume of a skid-mounted pump for replenishing and energizing according to claim 1 is characterized in that: In step S7, the calculation formula for the final fluid replacement volume is: V 最终 =V 折算 +V 附加 (6) Where: V 最终 —Final volume of fluid replacement, m 3 ; V 折算 —Converted volume of fluid replacement, m 3 ; V 附加 —Additional value for converting the volume of fluid replacement, m 3 .

8. The method for calculating the injection volume of a skid-mounted pump for replenishing and energizing according to claim 7 is characterized in that: In step S5, the calculation formula for the converted fluid replacement volume is: In 折算 =γ×λ×V 理论 (7) Where: V 折算 —Converted volume of fluid replacement, m 3 ;γ—deficit coefficient, %; V 理论 —Theoretical fluid replacement volume, m 3 ;λ—connectivity coefficient.

9. The method for calculating the injection volume of a skid-mounted pump for replenishing and energizing according to claim 7, characterized in that: In step S6, the calculation formula of the additional value of the converted fluid replacement volume is: V 附加 =[V 理论 -(Q 累注 -Q 累采 )]×[1-(k / 6) 1 / 2 ] (8) Where: V 附加 —Additional value for converting the volume of fluid replacement, m 3 ; V 理论 —Theoretical fluid replacement volume, m 3 ; k—connectivity number, k≦4; Q 累注 —Cumulative water injection volume, m 3 ; Q 累采 —Cumulative extraction volume, m 3 .

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