Method and device for calculating production pressure difference of oil wells with multiple sets of reservoir bodies for carbonate rock

A carbonate rock, calculation method technology, applied in earthwork drilling, wellbore/well components, measurement, etc., can solve problems such as high cost, large manpower and material resources, and achieve the effect of improving efficiency and reducing costs

Active Publication Date: 2019-07-09
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the above-mentioned method of calculating the production differential pressure needs to measure the formation pressure and the bottom hole flow pressure, and the bottom

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  • Method and device for calculating production pressure difference of oil wells with multiple sets of reservoir bodies for carbonate rock
  • Method and device for calculating production pressure difference of oil wells with multiple sets of reservoir bodies for carbonate rock
  • Method and device for calculating production pressure difference of oil wells with multiple sets of reservoir bodies for carbonate rock

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Embodiment Construction

[0045] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0046] Before describing the specific embodiment of the present invention, some basic concepts are explained first:

[0047] (1) Reservoir

[0048] Reservoir bodies can be used as pores and fractures for storing oil and gas, which are not distributed in layers, but form irregular combinations within and between layers.

[0049] (2) Well storage eff

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Abstract

The embodiment of the invention provides a method and device for calculating the production pressure difference of oil wells with multiple sets of reservoir bodies for carbonate rock. The method comprises the steps: measuring wellhead pressure before fluid injection; determining first injection pressure when the first reservoir body is filled with the fluid and the fluid starts to be injected intothe second reservoir body, wherein the first reservoir body is a previous-stage reservoir body of the second reservoir body; and calculating a production pressure difference according to the wellheadpressure and the first injection pressure, wherein the production pressure difference is a difference value between the formation pressure and the bottom hole flow pressure. According to the embodiment of the invention, the production pressure difference calculation cost can be reduced.

Description

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Claims

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Application Information

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Owner PETROCHINA CO LTD
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