Superficial layer heavy oil reservoir single-phase flow screw pump lifting prejudgment method

A heavy oil reservoir, screw pump technology, applied in forecasting, data processing applications, instruments, etc., can solve the problems of oilfield unit economic loss, damage to screw pump, small generalization and other problems

Active Publication Date: 2017-05-17
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The superior performance of the screw pump also leads to certain restrictions on its applicable conditions.
Generally, the viscosity range of the crude oil that the screw pump can lift is less than 8000mPa s, and the head range is generally within 1800m. Although there are screw pumps for ultra-de...

Method used

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  • Superficial layer heavy oil reservoir single-phase flow screw pump lifting prejudgment method
  • Superficial layer heavy oil reservoir single-phase flow screw pump lifting prejudgment method
  • Superficial layer heavy oil reservoir single-phase flow screw pump lifting prejudgment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Taking a certain well in a block of Xinjiang Oilfield as an example to judge the crude oil lifting capacity of the screw pump,

[0055] S100. The depth of the oil reservoir in this well area is 1600m, within the lifting range of conventional screw pumps, the production of screw pumps is carried out;

[0056] S200, determine the relevant parameters of the reservoir oil well for production and development (as shown in Table 2), and measure the viscosity-temperature relationship and geothermal gradient on the spot;

[0057] Table 2

[0058]

[0059] Daily output 3m 3 / d can determine the lifting speed is 0.0176m / s, the depth of the oil reservoir can determine the head of the screw pump is 12.65MPA,

[0060] S300. Obtain the crude oil density, the local gravity acceleration value and the inclination angle with the formation during the drilling process of the oil well, and calculate the gravity pressure loss;

[0061] S400. Calculate the oil well in sections, and calcula...

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Abstract

The present invention discloses a superficial layer heavy oil reservoir single-phase flow screw pump lifting prejudgment method. The method comprises the following steps: selecting an oil well with a suitable depth for production of a screw pump, determining relevant parameters of the produced and developed oil reservoir oil well, determining the lift and the lifting speed of the screw pump, and calculating the gravity pressure loss; performing subsection calculation of the oil well, and performing subsection iteration calculation of the frictional resistance loss of each section; performing summation of the frictional resistance loss of each section to obtain a total frictional resistance loss, and performing summation of the total frictional resistance loss and the gravity pressure loss to obtain a linear loss, comparing the linear loss with the lift of the screw pump obtained in the step 2, if the linear loss is larger than the lift of the screw pump, allowing the screw pump not to be lifted; and or else, lifting the screw pump. The superficial layer heavy oil reservoir single-phase flow screw pump lifting prejudgment method is a method for determining whether the screw pump is lifted or not aiming at the superficial layer heavy oil reservoir with high crude oil viscosity and free from gas and water so as to give a certain guide for the determination of whether the screw pump is employed for production and development of the field superficial layer heavy oil or not.

Description

technical field [0001] The invention relates to a method for predicting the lift of a single-phase flow screw pump in a shallow heavy oil reservoir, and belongs to the technical field of oil field exploitation. Background technique [0002] For the production and development of shallow heavy oil reservoirs, the self-flowing ability of oil wells is limited, and mechanical pumping and other means are commonly used. In the application of various mechanical pumps, due to its excellent performance-high pump efficiency, simple ground equipment, no pollution, low noise, wide range of crude oil viscosity and easy operation, etc., the screw pump is widely used for shallow oil pumping. Tibetan production development. The superior performance of the screw pump also leads to certain restrictions on its applicable conditions. Generally, the crude oil viscosity range that the screw pump can lift is less than 8000mPa·s, and the head range is generally within 1800m. Although there are als...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q50/02
CPCG06Q10/04G06Q50/02
Inventor 舒政杨浩孙锡泽宋红辉曹杰陈洪施雷庭
Owner SOUTHWEST PETROLEUM UNIV
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