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Stratum crude oil density determining method and device

A determination method and technology for crude oil, applied in measurement devices, instruments, scientific instruments, etc., can solve the problems of pressure imbalance in wells, complicated operations, and high well control risks.

Pending Publication Date: 2020-07-07
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing method for determining the density of formation crude oil is complicated to operate, and sampling the crude oil at the mixing point of the wellbore is likely to cause pressure imbalance in the well, resulting in a high risk of well control

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  • Stratum crude oil density determining method and device
  • Stratum crude oil density determining method and device
  • Stratum crude oil density determining method and device

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Embodiment Construction

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0049] 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 only some embodiments of the present invention, but not all embodiments. Based on the embodiments of th...

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Abstract

The invention provides a stratum crude oil density determining method and device. The stratum crude oil density determining method comprises the steps of determining the volume and density of thin oilmixed into crude oil through a thick oil mixing well; determining the volume and the density of the mixed oil exploited from the thickened oil blending well; determining the reference density of thecrude oil according to the volume of the thin oil, the density of the thin oil, the volume of the mixed oil and the density of the mixed oil; and determining the actual density of the crude oil according to the reference density and the current temperature of the crude oil. According to the stratum crude oil determining method and device, the well control risk is reduced.

Description

technical field [0001] The invention relates to the field of petroleum exploitation, in particular to a method and device for determining the density of formation crude oil. Background technique [0002] In the process of oil extraction, since the crude oil in the heavy oil well is thick, it is often necessary to add thin oil to the crude oil to reduce the viscosity of the crude oil, so that the crude oil can be extracted smoothly. However, this leads to the crude oil produced in the formation Density cannot be determined directly. [0003] The existing methods for determining the density of formation crude oil usually need to take out the crude oil lower than the dilution point in the wellbore, so as to determine the density of the formation crude oil according to the extracted crude oil. [0004] However, the existing method for determining the density of formation crude oil is complicated to operate, and sampling the crude oil by running into the wellbore doping point wi...

Claims

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Application Information

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IPC IPC(8): G01N9/00
CPCG01N9/00
Inventor 杨美纯陈利新杨文明郭志广牛阁苏东坡尹怀润晏楠钟楚红
Owner PETROCHINA CO LTD
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