Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and device for acquiring viscosity and density of drilling fluids in drilling process

A drilling fluid and density technology, applied in the field of oil drilling, can solve the problems that the viscosity and density parameters of the drilling fluid cannot reflect the downhole conditions in real time, and achieve the effects of improving drilling quality, broad application prospects and accelerating ROP.

Inactive Publication Date: 2011-08-03
PETROCHINA CO LTD
View PDF6 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Most of the above-mentioned existing technologies are methods of determining the density and viscosity of drilling fluid while drilling through surface measurement or simulation experiments. However, in the real drilling process, due to the complex changes in downhole conditions, the drilling fluid viscosity and density parameters measured on the ground cannot be determined. Real and real-time reflection of underground conditions

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for acquiring viscosity and density of drilling fluids in drilling process
  • Method and device for acquiring viscosity and density of drilling fluids in drilling process
  • Method and device for acquiring viscosity and density of drilling fluids in drilling process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] 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 making creative efforts belong to the protection scope of the present invention.

[0023] Embodiments of the present invention firstly provide a method for obtaining the viscosity and density of drilling fluid during drilling. A flow field is formed in the wellbore, such as figure 1 As shown, set at least 3 pressure measuring points in the wellbore ( figure 1 The 4 pressure measuring points in are just a kind of concrete ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method and device for acquiring the viscosity and the density of drilling fluids in the drilling process. The method comprises the following steps of: arranging at least three pressure measuring equipment in a pitshaft, wherein the at least three pressure measuring equipment are positioned at different depths; acquiring the pressure values of the drilling fluids, which are measured by each pressure measuring equipment; selecting two groups of pressure measuring equipment from the at least three pressure measuring equipment, wherein each group includes two pressure measuring equipment; respectively building a fluid model of each group of pressure measuring equipment according to the pressure values of two drilling fluids, which are acquired by the each group of pressure measuring equipment, and the depth difference value between two pressure measuring equipment; and generating the viscosity and the density of the drilling fluids according to the two built fluid models.

Description

technical field [0001] The invention relates to the technical field of petroleum drilling, in particular to a method and a device for obtaining the viscosity and density of drilling fluid during drilling. Background technique [0002] Drilling fluid mainly plays the role of carrying cuttings, cooling drilling tools, maintaining wellbore stability, and protecting drilled oil and gas layers during drilling operations, and is an important link in the drilling and production process. The two important parameters of the drilling fluid in the drilling process, viscosity and density, directly affect the drilling quality. At present, during the process of drilling in my country's oilfields, only parameters such as downhole temperature, well deviation, azimuth, and oil and gas indications can be monitored. There is no technical means for calculating and monitoring the density and viscosity of downhole drilling fluid during the process. [0003] Several testing methods and devices fo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/00E21B21/08
Inventor 宋志军齐海鹰王晓华杨志祥杨显志王永君杨文军李广富穆磊岳鹏飞朱静王颖袁天瑜
Owner PETROCHINA CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com