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Method for solving apparent viscosity of lifted liquid by applying indicator diagram of pumping well

A technology for dynamometer diagrams and pumping wells, applied to flow characteristics, measuring devices, instruments, etc., can solve problems such as inability to accurately calculate the apparent viscosity of the lifted liquid, inability to calculate viscosity, and increase testing costs

Pending Publication Date: 2022-03-11
YANGZHOU JIANGSU OILFIELD RUIDA PETROLEUM ENG TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] 1. Laboratory measurement: a series of cumbersome steps such as sampling, heating, dehydration, and degassing are required to obtain results, and the laboratory measurement conditions are single, making it difficult to simulate the real situation on site;
[0007] 2. Calculation by using the existing parameter-related charts or empirical formulas, mainly Standing method, Beggs-Robinson method and Glaso method, the accuracy of these methods is low, and it only calculates the viscosity of a reservoir, which cannot be accurately calculated The apparent viscosity of the lifted liquid in a certain oil well during the lifting process;
[0008] 3. Use the input power calculation theory and actual measured input power in the patent "A Rod Pump Mechanical Oil Recovery System and Method" (US 6640896B1) to inversely calculate the viscosity. This method has high accuracy, but the input power of the oil well needs to be tested, and additional The cost of testing cannot be calculated quickly and easily

Method used

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  • Method for solving apparent viscosity of lifted liquid by applying indicator diagram of pumping well
  • Method for solving apparent viscosity of lifted liquid by applying indicator diagram of pumping well
  • Method for solving apparent viscosity of lifted liquid by applying indicator diagram of pumping well

Examples

Experimental program
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Effect test

Embodiment 1

[0040] The present embodiment is with the well number: the pumping well of South 4-4-inclined P2038 is an example to further illustrate the inventive method, and the concrete parameters of South 4-4-inclined P2038 oil well are as shown in table 1:

[0041]

[0042] Table 1

[0043] According to the data in the above table, follow the steps below to determine the apparent viscosity of the lifted liquid of Nan 4-4-Blank P2038:

[0044] 1) Determine the sliding loss power P k :

[0045] According to the formula P k = 2f k ·q 杆 ·L 水平 · S · n calculation, P k =2×0.1×40.18N / m×156.58m×4.2m×0.073 times / s=385.79W;

[0046] 2) Determine the dissolved gas expansion power P 膨 :

[0047] ①When P 沉 ≥P b >P 井口 hour,

[0048] ② When P 沉 ≥P b and P 井口 ≥P b when P 膨 = 0;

[0049] ③ When P 井口 沉 b hour,

[0050] ④When P 沉 b and P 井口 >P 沉 when P 膨 = 0;

[0051] South 4-4-Slope P2038 P 井口 沉 b , according to formula ③,

[0052]

[0053] 3) from figure 1 Obtain ...

Embodiment 2

[0064] The present embodiment is with the well number: the pumping well of South 4-D 4-inclined P2036 is an example to further illustrate the inventive method, and the concrete parameters of South 4-D 4-inclined P2036 are as shown in Table 2:

[0065]

[0066] Table 2

[0067] According to the data in the above table, follow the steps below to determine the apparent viscosity of the lifted liquid of Nan 4-Ding 4-Die P2036:

[0068] 1) Determine the sliding loss power P k :

[0069] According to the formula P k = 2f k ·q 杆 ·L 水平 · S · n calculation, P k =2×0.1×40.12N / m×187.54m×4.2m×0.063 times / s=398.18W;

[0070] 2) Determine the dissolved gas expansion power P 膨 :

[0071] ①When P 沉 ≥P b >P 井口 hour,

[0072] ② When P 沉 ≥P b and P 井口 ≥P b when P 膨 = 0;

[0073] ③ When P 井口 沉 b hour,

[0074] ④When P 沉 b and P 井口 >P 沉 when P 膨 = 0;

[0075] South 4-D 4-Slant P2036 P 井口 沉 b , according to formula ③,

[0076]

[0077] 3) from figure 2 Obtain...

Embodiment 3

[0089] The present embodiment is with the well number: the pumping well of South 4-31-inclined P2044 is an example to further illustrate the inventive method, and the concrete parameters of South-South 4-31-inclined P2044 are as shown in table 3:

[0090]

[0091] table 3

[0092] According to the data in the above table, follow the steps below to determine the apparent viscosity of the lifted liquid of Nan 4-31-Obline P2044:

[0093] 1) Determine the sliding loss power P k:

[0094] According to the formula P k = 2f k ·q 杆 ·L 水平 · S · n calculation, P k =2×0.1×40.42N / m×28.12m×4.2m×0.05 times / s=47.74W;

[0095] 2) Determine the dissolved gas expansion power P 膨 :

[0096] ①When P 沉 ≥P b >P 井口 hour,

[0097] ② When P 沉 ≥P b and P 井口 ≥P b when P 膨 = 0;

[0098] ③ When P 井口 沉 b hour,

[0099] ④When P 沉 b and P 井口 >P 沉 when P 膨 = 0;

[0100] South 4-31-Slope P2044 P 井口 沉 b , according to formula ③,

[0101]

[0102] 3) from image 3 Obtain th...

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Abstract

The invention discloses a method for calculating the apparent viscosity of lifted liquid by using a pumping well indicator diagram, which comprises the following steps of: calculating the viscosity loss power Pr according to a formula Pr = (Fmax-F upper static) * S * n * 1.15-Pk + P expansion, and quickly and simply calculating the apparent viscosity of the lifted liquid according to the calculation result of the viscosity loss power Pr, and has the advantages of convenience and simplicity.

Description

technical field [0001] The invention relates to the technical field of petroleum engineering, in particular to a method for obtaining the apparent viscosity of a lifted liquid by using an indicator diagram of an oil pumping well. Background technique [0002] The apparent viscosity of the lifted liquid is one of the important parameters to realize the US invention patent "a mechanical oil recovery system and method with a rod pump" (US 6640896B1) obtained by Zheng Haijin, the inventor of this technology, in 2003. The patent "a rod pump Compared with the internationally accepted API design method and other design methods, the mechanical oil recovery system and method can greatly improve the efficiency of the mechanical recovery system and reduce energy consumption costs (35%) under the premise of ensuring the same fluid production; and It can greatly prolong the inspection cycle of the oil well pump, reduce the operation cost of the pump inspection (46%), and increase the pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N11/12G06F17/11E21B47/008
CPCG01N11/12G06F17/11E21B47/008
Inventor 郑海金徐菁刘从领邓吉彬陈晨朱斌姚洁
Owner YANGZHOU JIANGSU OILFIELD RUIDA PETROLEUM ENG TECH DEV
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