Determination method of adsorption performance of drilling fluid organic treatment agent

An organic treatment and drilling fluid technology, which is applied in the measurement of high-temperature adsorption performance of drilling fluid organic treatment agents, and the measurement field of the adsorption performance of drilling fluid organic treatment agents. Inaccurate and other problems, to achieve the effect of true and reliable test results and scientific measurement methods

Active Publication Date: 2018-02-09
CHINA PETROLEUM & CHEM CORP +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the concentration of the treatment agent is high, the light adsorption curve will bend, which will affect the accuracy of the measurement results.
If the treatment agent is a coloring treatment agent, the small colored components left in the supernatant will also cause a large shift in the light absorption curve, resulting in inaccurate measurement results
In addition, this evaluation method is currently only used to evaluate the adsorption performance of treatment agents on clay under normal temperature 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
  • Determination method of adsorption performance of drilling fluid organic treatment agent
  • Determination method of adsorption performance of drilling fluid organic treatment agent
  • Determination method of adsorption performance of drilling fluid organic treatment agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Determination of High Temperature (150°C) Adsorption Capacity of Viscosity Reducer Sulfonated Tannin in Drilling Fluid Containing 4.0% by Weight of Clay

[0032] The specific experimental steps are as follows:

[0033] 1) Fully mixing sulfonated tannins, clay and water in proportion to prepare a drilling fluid suspension with a sulfonated tannin concentration of 1.0% by weight, wherein the weight of clay accounts for 4.0% of the total weight of clay and water.

[0034] 2) Measure the apparent viscosity (AV) and dynamic shear force (YP) of the above-mentioned drilling fluid suspension, and the results are shown in Table 1.

[0035] 3) Add the drilling fluid suspension to the high-temperature and high-pressure fluid loss instrument, raise the temperature to 150° C., and set the pressure to 3.5 MPa.

[0036] 4) After 1.0 hour, open the back pressure valve on the high-temperature and high-pressure filter loss meter, discard the filtrate obtained from the initial filtration...

Embodiment 2

[0047] Determination of High Temperature (150°C) Adsorption Capacity of Viscosity Reducer Tannin in Drilling Fluid Containing 4.0% by Weight of Clay

[0048] The experimental procedure is the same as that of Example 1, except that tannin is used instead of sulfonated tannin, and the measurement results are shown in Table 1.

Embodiment 3

[0050] Determination of High Temperature (150°C) Adsorption Capacity of Viscosity Reducer Iron Chromium Lignosulfonate in Drilling Fluid Containing 4.0% by Weight of Clay

[0051] The experimental procedure is the same as that of Example 1, except that iron chromium lignosulfonate is used instead of sulfonated tannin, and the measurement results are shown in Table 1.

[0052] The measurement result of table 1 embodiment 1-3

[0053]

[0054] Note: AV and YP of the drilling fluid suspension are measured according to the determination method in "GB / T16783.1-2006 Oil and Gas Industry Drilling Fluid Field Test Part 1: Water-based Drilling Fluid".

[0055] According to the measurement results shown in Table 1, it can be seen that the greater the adsorption amount of the viscosity reducer on the clay, the smaller the AV and YP of the drilling fluid system, which means the better the viscosity reduction effect. It shows that the greater the adsorption amount of treatment agent mo...

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 method for measuring the adsorption performance of a drilling fluid treatment agent, in particular a method for determining the high temperature adsorption performance of a drilling fluid treatment agent. The method utilizes a drilling fluid system containing a treatment agent for thermal filtration, for example The liquid phase in the system is obtained by lowering the fluid loss back pressure, and the mass of the unadsorbed drilling fluid treatment agent under high temperature conditions is calculated by measuring the percentage content of the characteristic elements of the treatment agent in the liquid phase, and then calculated under high temperature conditions. The adsorption amount on the clay in the drilling fluid realizes the evaluation of the adsorption performance of the drilling fluid treatment agent under high temperature conditions. The determination method is scientific and accurate, especially suitable for the evaluation of the high-temperature adsorption performance of drilling fluid organic treatment agents, and provides technical support for accurately designing and optimizing the molecular structure of drilling fluid treatment agents and preparing reasonable drilling fluid formulations.

Description

technical field [0001] The invention relates to the field of performance evaluation of drilling fluid treatment agents, in particular to a method for measuring the adsorption performance of drilling fluid organic treatment agents, in particular to a method for measuring the high-temperature adsorption performance of drilling fluid organic treatment agents. Background technique [0002] Drilling fluid, commonly known as mud, is a fluid prepared from various raw materials and chemical additives. During the drilling process, it plays a role in suspending and carrying cuttings, lubricating and cooling the drill bit, stabilizing the well wall, balancing formation pressure, and transmitting hydrodynamic forces. It is an important guarantee for drilling safety and protection of oil and gas reservoirs. In the process of oil drilling, in order to adjust the performance of drilling fluid and ensure the smooth progress of drilling operations, the chemical products used are called drill...

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 Patents(China)
IPC IPC(8): G01N33/00G01N21/71
Inventor 褚奇李涛刘匡晓李舟军宋兆辉薛玉志
Owner CHINA PETROLEUM & CHEM CORP
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