Drilling fluid with aquo-complex inhabitation performance

A technology for hydrate inhibitor and drilling fluid, applied in the field of drilling fluid, can solve the problems of low cost of raw materials, low environmental pollution, etc., and achieve the effects of good effect, small environmental damage and small usage amount

Inactive Publication Date: 2016-05-04
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the deficiencies of the prior art, and the technical problem to be solved by the present invention is to prepare a drilling fluid with hydrate inhibition performance, which can meet various technical requirements for offshore oil and gas exploration and development, and has little environmental pollution , low cost of raw materials, etc.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Adopt the base slurry of 2% (1# drilling fluid), 3% (2# drilling fluid), 4% (3# drilling fluid) in the present embodiment, the preparation method of the drilling fluid used is as follows (in the following each embodiment Both use this drilling fluid):

[0022] At room temperature, 1# drilling fluid weighs the required raw materials according to the following quantities: 4L seawater (mainly composed of sodium chloride, potassium chloride, magnesium sulfate and other salts, with a salt content of 34.4‰), 1.6g sodium carbonate , 1.6g sodium hydroxide, 80g bentonite, 4g polyacrylamide potassium salt, 160g sulfomethyl phenolic resin, 40g sulfonated pitch, 10g extreme pressure lubricant, 60g ultrafine calcium carbonate, 40g low viscosity polyanionic cellulose, 200g Sodium chloride, 100g 1-ethyl-3-methylimidazolium tetrafluoroborate, 40g polyvinylcaprolactam, 10g isooctyl alcohol.

[0023] 2# Drilling fluid weighs the required raw materials according to the following quantiti...

Embodiment 2

[0029] In offshore oil and gas exploration and development, drilling pipelines often contain free water, and hydrates are easily formed when the temperature and pressure in the pipelines change suddenly. Injectors, etc.; and the decomposition of gas hydrate formed in drilling fluid will lead to safety accidents such as gas invasion, blowout and well wall instability, which will seriously affect normal drilling and well control work. This example will evaluate the hydrate inhibition performance of this drilling fluid.

[0030] The experimental equipment used in this example mainly includes a high-pressure reactor (1 L, the maximum working pressure is 30 MPa), a constant temperature water bath (working range is -20 ~ 90 ° C), a stirring system, a booster system, a pressure and temperature measurement system, Vacuum pumps, data acquisition systems, etc. The gases used are pure methane (99.99%), 1# mixed gas (propane: 3%, ethane: 5%, methane: balance gas) and 2# mixed gas (n-pent...

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

PropertyMeasurementUnit
densityaaaaaaaaaa
Login to view more

Abstract

The invention discloses drilling fluid with aquo-complex inhabitation performance. The drilling fluid is prepared by adding a treating agent into basic mud. The treating agent in each L of the basic mud is prepared from 1-2 g of potassium polyacrylamid KPAM, 40-60 g of sulfonated-pheno-formoldehyde resin SMP-2, 10-40 g of sulfonated bitumen SAS-1, 10 g of extreme-pressure lubricant KRH, 15-30 g of superfine calcium carbonate QS-2, 10-20 g of low-viscosity polyanionic cellulose LV-PAC, 85-170 g of aquo-complex inhibitor and 10 g of isooctyl alcohol. The partial treating agent used in the drilling fluid has multiple functions for ocean oil gas drilling and has advantages of being economical, low in cost, easy to decompose and small in environment damage. The drilling fluid has strong shale hydration inhibiting and collapse preventing functions, is good in rheological property, has an obvious aquo-complex inhibiting effect, meets various requirements needed by ocean oil gas drilling working conditions, and is suitable for ocean oil gas drilling operation.

Description

technical field [0001] The invention relates to a drilling fluid, in particular to a drilling fluid with good hydrate inhibition performance. Background technique [0002] With the increasing demand for energy from global economic development and the decreasing of land conventional oil and gas resources, offshore oil and gas exploration and development has become a hot spot in international oil and gas exploration and development. However, in offshore oil and gas exploration and development, the complex marine geological environment and harsh operating conditions make offshore oil and gas exploration and development face many risks, among which the formation of hydrates in offshore oil and gas exploration and development is one of the risks faced. [0003] In offshore oil and gas exploration and development, the drilling pipeline usually contains free water, and most of the natural gas migrating through the pipeline is in a state of water saturation, and sudden changes in te...

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): C09K8/16C09K8/24
CPCC09K8/16C09K8/24C09K2208/12C09K2208/22
Inventor 何勇梁德青龙臻周雪冰
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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