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A Calculation Method of Fracturing Dynamic Bottomhole Pressure Based on Construction Data

A bottomhole pressure and calculation method technology, which is applied in complex mathematical operations, earthwork drilling, wellbore/well components, etc., can solve problems such as inaccurate calculation of bottomhole pressure, and achieve accurate friction calculation results and accurate calculation results , Intuitive effect of calculation results

Active Publication Date: 2022-02-22
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to address the deficiencies in the prior art and provide a method for calculating the dynamic bottomhole pressure of fracturing based on construction data, which is used to solve the problem of inaccurate calculation of bottomhole pressure in the existing fracturing construction process

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  • A Calculation Method of Fracturing Dynamic Bottomhole Pressure Based on Construction Data
  • A Calculation Method of Fracturing Dynamic Bottomhole Pressure Based on Construction Data
  • A Calculation Method of Fracturing Dynamic Bottomhole Pressure Based on Construction Data

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Embodiment Construction

[0070] The present invention will be described in detail below in conjunction with the embodiments. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0071] A fracturing dynamic bottom hole pressure calculation method based on construction data, comprising the following steps:

[0072] S1. Obtain the wellbore structure data, well deviation data, fracturing construction data, and fracturing material data of the target well;

[0073] S2. Based on the principle of material conservation, calculate the liquid volume and sand concentration of each liquid unit in the wellbore at different times;

[0074] S3. Calculate the liquid column pressure of each liquid unit in the wellbore based on the liquid volume, sand concentration, and well inclination angle of each liquid unit in the wellbore;

[0075] S4. Use the actual construction friction of the t...

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Abstract

The invention discloses a fracturing dynamic bottom hole pressure calculation method based on construction data, comprising the following steps: obtaining target well data, fracturing construction data, etc.; calculating the liquid volume and sand concentration of each liquid unit in the wellbore at different times; Calculate the liquid column pressure of each liquid unit in the wellbore; calculate the friction resistance of each liquid unit in the wellbore; calculate the dynamic bottom hole pressure during fracturing construction. The present invention adopts the idea of ​​"dividing the whole into parts", tracks the liquid volume and sand concentration of the liquid unit in the wellbore at all times, and considers the change of the inclination angle of the wellbore, and at the same time uses the actual construction friction of the target well to correct the friction fitted by the indoor experiment The calculation formula and the friction calculation result are more accurate; the present invention calculates the dynamic bottom well pressure according to the dynamic wellhead oil pressure and other construction data, and the calculation result is more intuitive and more in line with the actual situation of fracturing construction.

Description

technical field [0001] The invention relates to the technical field of oil and gas field development, in particular to a calculation method for fracturing dynamic bottom hole pressure based on construction data. Background technique [0002] Hydraulic fracturing technology, as one of the measures to increase production of oil and gas wells and increase injection of water wells, has been widely used in my country at present. Hydraulic fracturing is by pumping a pre-fluid with a certain viscosity into the target reservoir, forming and extending fractures at high pressure, and then injecting a sand-mixing fluid with proppant to fill the proppant in the hydraulic fractures, thereby forming a fracture in the formation. Sufficiently long and sufficiently wide high-conductivity sand-filled fractures. [0003] After the hydraulic fracturing operation is completed, it is often necessary to calculate the bottom hole pressure for net pressure fitting, analysis of fracture extension, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B49/00E21B43/26G06F17/10
CPCE21B49/00E21B43/26G06F17/10
Inventor 罗志锋吴林赵立强袁学芳贾宇成张楠林姚志广
Owner SOUTHWEST PETROLEUM UNIV
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