System and method for evaluating damage on reservoir by cement slurry

A cement slurry and reservoir technology, applied in suspension and porous material analysis, measuring devices, scientific instruments, etc., can solve problems that cannot be applied to the evaluation of cement slurry reservoir damage and cement slurry damage to reservoir low accuracy

Inactive Publication Date: 2018-07-03
PETROCHINA CO LTD
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the evaluation method of cement slurry damage to the reservoir usually adopts the industry standard in the petroleum industry. However, in the industry standard, only the evaluation standard of the filtrate damage to t

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
  • System and method for evaluating damage on reservoir by cement slurry
  • System and method for evaluating damage on reservoir by cement slurry
  • System and method for evaluating damage on reservoir by cement slurry

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0039] In order to make the purposes, 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 with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] figure 1 It is a schematic structural diagram of the evaluation system for the damage of cement slurry to the reservoir provided in the first embodiment of the present invention. like figure 1 As shown, the evaluation system for cement slurry damage to the reservoir provided in this embodiment may include: a cement slurry p...

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 provides a system and a method for evaluating the damage on reservoir by cement slurry. The system comprises a cement slurry pollution device, a stratum environment simulation device, arock core fixation device and a control device, wherein the control device is connected to the cement slurry pollution device, the rock core fixation device is respectively connected to the cement slurry pollution device and the stratum environment simulation device, the control device is used for setting the working parameters for the cement slurry pollution device, the rock core fixation deviceis used for fixing rock so as to make one end surface of the rock contact the test solution in the cement slurry pollution device and make the other end surface of the rock core contact the stratum water in the stratum environment simulation device, and the pressure difference between the two end surfaces of the rock core is the pressure difference between the wellbore and the stratum during cementing. According to the present invention, with the evaluation system, the accuracy of the evaluation of the damage on the reservoir by the cement slurry is improved.

Description

technical field [0001] The invention relates to the technical field of petroleum exploitation, in particular to a system and method for evaluating the damage of cement slurry to reservoirs. Background technique [0002] Well cementing is an indispensable and important link in the drilling operation process, including casing running and cement injection. The purpose of cementing is to protect and support the casing in the oil and gas well, and to seal off the oil, gas and water layers. However, during the cementing process, the filtrate and solid particles of the cement slurry system will cause damage to the reservoir. Once the damage is formed, it will affect the quality of cementing and the productivity of oil and gas wells. Therefore, it is of great significance to accurately evaluate the damage degree of cement slurry to reservoirs to protect reservoirs and improve oil recovery. [0003] At present, the evaluation method of cement slurry damage to the reservoir usually ...

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
IPC IPC(8): G01N15/08
CPCG01N15/08
Inventor 朱金智李早元艾正青张兴国滕学清冯波李家学张晓兵李宁郭小阳张绍俊刘毅陆海瑛吴晓花
Owner PETROCHINA CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap